summaryrefslogtreecommitdiff
path: root/src/settings.sml
blob: 922638f53bf56efe11b69203b502a73742cc7bad (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
(* Copyright (c) 2008-2011, Adam Chlipala
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 * - Redistributions of source code must retain the above copyright notice,
 *   this list of conditions and the following disclaimer.
 * - Redistributions in binary form must reproduce the above copyright notice,
 *   this list of conditions and the following disclaimer in the documentation
 *   and/or other materials provided with the distribution.
 * - The names of contributors may not be used to endorse or promote products
 *   derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 *)

structure Settings :> SETTINGS = struct

val urlPrefix = ref "/"
val urlPrePrefix = ref ""
val timeout = ref 0
val headers = ref ([] : string list)
val scripts = ref ([] : string list)

fun getUrlPrefix () = !urlPrefix
fun getUrlPrePrefix () = !urlPrePrefix
fun setUrlPrefix p =
    let
        val prefix = if p = "" then
                         "/"
                     else if String.sub (p, size p - 1) <> #"/" then
                         p ^ "/"
                     else
                         p

        fun findPrefix n =
            let
                val (befor, after) = Substring.splitl (fn ch => ch <> #"/") (Substring.extract (prefix, n, NONE))
            in
                if Substring.isEmpty after then
                    ("", prefix)
                else
                    (String.substring (prefix, 0, n) ^ Substring.string befor, Substring.string after)
            end

        val (prepre, prefix) =
            if String.isPrefix "http://" prefix then
                findPrefix 7
            else if String.isPrefix "https://" prefix then
                findPrefix 8
            else
                ("", prefix)
    in
        urlPrePrefix := prepre;
        urlPrefix := prefix
    end

fun getTimeout () = !timeout
fun setTimeout n = timeout := n

fun getHeaders () = !headers
fun setHeaders ls = headers := ls

fun getScripts () = !scripts
fun setScripts ls = scripts := ls

type ffi = string * string

structure K = struct
type ord_key = ffi
fun compare ((m1, x1), (m2, x2)) =
    Order.join (String.compare (m1, m2),
             fn () => String.compare (x1, x2))
end

structure S = BinarySetFn(K)
structure M = BinaryMapFn(K)

fun basis x = S.addList (S.empty, map (fn x : string => ("Basis", x)) x)

val clientToServerBase = basis ["int",
                                "float",
                                "string",
                                "time",
                                "file",
                                "unit",
                                "option",
                                "list",
                                "bool",
                                "variant"]
val clientToServer = ref clientToServerBase
fun setClientToServer ls = clientToServer := S.addList (clientToServerBase, ls)
fun mayClientToServer x = S.member (!clientToServer, x)

val effectfulBase = basis ["dml",
                           "nextval",
                           "setval",
                           "set_cookie",
                           "clear_cookie",
                           "new_channel",
                           "send",
                           "htmlifyInt_w",
                           "htmlifyFloat_w",
                           "htmlifyString_w",
                           "htmlifyBool_w",
                           "htmlifyTime_w",
                           "attrifyInt_w",
                           "attrifyFloat_w",
                           "attrifyString_w",
                           "attrifyChar_w",
                           "urlifyInt_w",
                           "urlifyFloat_w",
                           "urlifyString_w",
                           "urlifyBool_w",
                           "urlifyChannel_w"]

val effectful = ref effectfulBase
fun setEffectful ls = effectful := S.addList (effectfulBase, ls)
fun isEffectful x = S.member (!effectful, x)

val benignBase = basis ["get_cookie",
                        "new_client_source",
                        "get_client_source",
                        "set_client_source",
                        "current",
                        "alert",
                        "confirm",
                        "onError",
                        "onFail",
                        "onConnectFail",
                        "onDisconnect",
                        "onServerError",
                        "kc",
                        "debug",
                        "naughtyDebug",
                        "rand",
                        "now",
                        "getHeader",
                        "setHeader",
                        "spawn",
                        "onClick",
                        "onDblclick",
                        "onKeydown",
                        "onKeypress",
                        "onKeyup",
                        "onMousedown",
                        "onMouseup",
                        "preventDefault",
                        "stopPropagation",
                        "fresh"]

val benign = ref benignBase
fun setBenignEffectful ls = benign := S.addList (benignBase, ls)
fun isBenignEffectful x = S.member (!benign, x)

val clientBase = basis ["get_client_source",
                        "current",
                        "alert",
                        "confirm",
                        "recv",
                        "sleep",
                        "spawn",
                        "onError",
                        "onFail",
                        "onConnectFail",
                        "onDisconnect",
                        "onServerError",
                        "kc",
                        "onClick",
                        "onDblclick",
                        "onKeydown",
                        "onKeypress",
                        "onKeyup",
                        "onMousedown",
                        "onMouseup",
                        "preventDefault",
                        "stopPropagation"]
val client = ref clientBase
fun setClientOnly ls = client := S.addList (clientBase, ls)
fun isClientOnly x = S.member (!client, x)

val serverBase = basis ["requestHeader",
                        "query",
                        "dml",
                        "nextval",
                        "setval",
                        "channel",
                        "send"]
val server = ref serverBase
fun setServerOnly ls = server := S.addList (serverBase, ls)
fun isServerOnly x = S.member (!server, x)

val basisM = foldl (fn ((k, v : string), m) => M.insert (m, ("Basis", k), v)) M.empty

val jsFuncsBase = basisM [("alert", "alert"),
                          ("stringToTime", "stringToTime"),
                          ("stringToTime_error", "stringToTime_error"),
                          ("timef", "strftime"),
                          ("confirm", "confrm"),
                          ("get_client_source", "sg"),
                          ("current", "scur"),
                          ("htmlifyBool", "bs"),
                          ("htmlifyFloat", "ts"),
                          ("htmlifyInt", "ts"),
                          ("htmlifyString", "eh"),
                          ("new_client_source", "sc"),
                          ("set_client_source", "sv"),
                          ("stringToFloat", "pflo"),
                          ("stringToInt", "pio"),
                          ("stringToFloat_error", "pfl"),
                          ("stringToInt_error", "pi"),
                          ("urlifyInt", "ts"),
                          ("urlifyFloat", "ts"),
                          ("urlifyTime", "ts"),
                          ("urlifyString", "uf"),
                          ("urlifyBool", "ub"),
                          ("recv", "rv"),
                          ("strcat", "cat"),
                          ("intToString", "ts"),
                          ("floatToString", "ts"),
                          ("charToString", "ts"),
                          ("onError", "onError"),
                          ("onFail", "onFail"),
                          ("onConnectFail", "onConnectFail"),
                          ("onDisconnect", "onDisconnect"),
                          ("onServerError", "onServerError"),
                          ("attrifyString", "atr"),
                          ("attrifyInt", "ts"),
                          ("attrifyFloat", "ts"),
                          ("attrifyBool", "bs"),
                          ("boolToString", "ts"),
                          ("str1", "id"),
                          ("strsub", "sub"),
                          ("strsuffix", "suf"),
                          ("strlen", "slen"),
                          ("strindex", "sidx"),
                          ("strchr", "schr"),
                          ("substring", "ssub"),
                          ("strcspn", "sspn"),
                          ("strlenGe", "strlenGe"),
                          ("kc", "kc"),
                          ("minTime", "0"),

                          ("islower", "isLower"),
                          ("isupper", "isUpper"),
                          ("isalpha", "isAlpha"),
                          ("isdigit", "isDigit"),
                          ("isalnum", "isAlnum"),
                          ("isblank", "isBlank"),
                          ("isspace", "isSpace"),
                          ("isxdigit", "isXdigit"),
                          ("tolower", "toLower"),
                          ("toupper", "toUpper"),

                          ("checkUrl", "checkUrl"),
                          ("bless", "bless"),

                          ("eq_time", "eq"),
                          ("lt_time", "lt"),
                          ("le_time", "le"),

                          ("debug", "uw_debug"),
                          ("naughtyDebug", "uw_debug"),

                          ("floatFromInt", "float"),
                          ("ceil", "ceil"),
                          ("trunc", "trunc"),
                          ("round", "round"),

                          ("now", "now"),
                          ("timeToString", "showTime"),
                          ("htmlifyTime", "showTimeHtml"),
                          ("toSeconds", "toSeconds"),
                          ("addSeconds", "addSeconds"),
                          ("diffInSeconds", "diffInSeconds"),

                          ("onClick", "uw_onClick"),
                          ("onDblclick", "uw_onDblclick"),
                          ("onKeydown", "uw_onKeydown"),
                          ("onKeypress", "uw_onKeypress"),
                          ("onKeyup", "uw_onKeyup"),
                          ("onMousedown", "uw_onMousedown"),
                          ("onMouseup", "uw_onMouseup"),
                          ("preventDefault", "uw_preventDefault"),
                          ("stopPropagation", "uw_stopPropagation"),

                          ("fresh", "fresh")]
val jsFuncs = ref jsFuncsBase
fun setJsFuncs ls = jsFuncs := foldl (fn ((k, v), m) => M.insert (m, k, v)) jsFuncsBase ls
fun jsFunc x = M.find (!jsFuncs, x)
fun allJsFuncs () = M.listItemsi (!jsFuncs)

datatype pattern_kind = Exact | Prefix
datatype action = Allow | Deny
type rule = { action : action, kind : pattern_kind, pattern : string }

datatype path_kind = Any | Url | Table | Sequence | View | Relation | Cookie | Style
type rewrite = { pkind : path_kind, kind : pattern_kind, from : string, to : string }

val rewrites = ref ([] : rewrite list)

fun subsume (pk1, pk2) =
    pk1 = pk2
    orelse pk2 = Any
    orelse pk2 = Relation andalso (pk1 = Table orelse pk1 = Sequence orelse pk1 = View)

fun setRewriteRules ls = rewrites := ls
fun rewrite pk s =
    let
        fun rew (ls : rewrite list) =
            case ls of
                [] => s
              | rewr :: ls =>
                let
                    fun match () =
                        case #kind rewr of
                            Exact => if #from rewr = s then
                                         SOME (size s)
                                     else
                                         NONE
                          | Prefix => if String.isPrefix (#from rewr) s then
                                          SOME (size (#from rewr))
                                      else
                                          NONE
                in
                    if subsume (pk, #pkind rewr) then
                        case match () of
                            NONE => rew ls
                          | SOME suffixStart => #to rewr ^ String.extract (s, suffixStart, NONE)
                    else
                        rew ls
                end
    in
        rew (!rewrites)
    end

val url = ref ([] : rule list)
val mime = ref ([] : rule list)
val request = ref ([] : rule list)
val response = ref ([] : rule list)

fun setUrlRules ls = url := ls
fun setMimeRules ls = mime := ls
fun setRequestHeaderRules ls = request := ls
fun setResponseHeaderRules ls = response := ls

fun getUrlRules () = !url
fun getMimeRules () = !mime
fun getRequestHeaderRules () = !request
fun getResponseHeaderRules () = !response

fun check f rules s =
    let
        fun chk (ls : rule list) =
            case ls of
                [] => false
              | rule :: ls =>
                let
                    val matches =
                        case #kind rule of
                            Exact => #pattern rule = s
                          | Prefix => String.isPrefix (#pattern rule) s
                in
                    if matches then
                        case #action rule of
                            Allow => true
                          | Deny => false
                    else
                        chk ls
                end
    in
        f s andalso chk (!rules)
    end

val checkUrl = check (fn _ => true) url

val validMime = CharVector.all (fn ch => Char.isAlphaNum ch orelse ch = #"/" orelse ch = #"-" orelse ch = #".")

val checkMime = check validMime mime
val checkRequestHeader = check validMime request
val checkResponseHeader = check validMime response


type protocol = {
     name : string,
     compile : string,
     linkStatic : string,
     linkDynamic : string,
     persistent : bool,
     code : unit -> Print.PD.pp_desc
}
val protocols = ref ([] : protocol list)
fun addProtocol p = protocols := p :: !protocols
fun getProtocol s = List.find (fn p => #name p = s) (!protocols)

fun clibFile s = OS.Path.joinDirFile {dir = Config.libC,
                                      file = s}

val curProto = ref {name = "",
                    compile = "",
                    linkStatic = "",
                    linkDynamic = "",
                    persistent = false,
                    code = fn () => Print.box []}
fun setProtocol name =
    case getProtocol name of
        NONE => raise Fail ("Unknown protocol " ^ name)
      | SOME p => curProto := p
fun currentProtocol () = !curProto

val debug = ref false
fun setDebug b = debug := b
fun getDebug () = !debug

datatype sql_type =
         Int
       | Float
       | String
       | Char
       | Bool
       | Time
       | Blob
       | Channel
       | Client
       | Nullable of sql_type

fun p_sql_ctype t =
    let
        open Print.PD
        open Print
    in
        case t of
            Int => "uw_Basis_int"
          | Float => "uw_Basis_float"
          | String => "uw_Basis_string"
          | Char => "uw_Basis_char"
          | Bool => "uw_Basis_bool"
          | Time => "uw_Basis_time"
          | Blob => "uw_Basis_blob"
          | Channel => "uw_Basis_channel"
          | Client => "uw_Basis_client"
          | Nullable String => "uw_Basis_string"
          | Nullable t => p_sql_ctype t ^ "*"
    end

fun isBlob Blob = true
  | isBlob (Nullable t) = isBlob t
  | isBlob _ = false

fun isNotNull (Nullable _) = false
  | isNotNull _ = true

datatype failure_mode = Error | None

type dbms = {
     name : string,
     header : string,
     link : string,
     p_sql_type : sql_type -> string,
     init : {dbstring : string,
             prepared : (string * int) list,
             tables : (string * (string * sql_type) list) list,
             views : (string * (string * sql_type) list) list,
             sequences : string list} -> Print.PD.pp_desc,
     query : {loc : ErrorMsg.span, cols : sql_type list,
              doCols : ({loc : ErrorMsg.span, wontLeakStrings : bool, col : int, typ : sql_type} -> Print.PD.pp_desc)
                       -> Print.PD.pp_desc}
             -> Print.PD.pp_desc,
     queryPrepared : {loc : ErrorMsg.span, id : int, query : string,
                      inputs : sql_type list, cols : sql_type list,
                      doCols : ({loc : ErrorMsg.span, wontLeakStrings : bool, col : int,
                                 typ : sql_type} -> Print.PD.pp_desc)
                               -> Print.PD.pp_desc,
                      nested : bool}
                     -> Print.PD.pp_desc,
     dml : ErrorMsg.span * failure_mode -> Print.PD.pp_desc,
     dmlPrepared : {loc : ErrorMsg.span, id : int, dml : string,
                    inputs : sql_type list, mode : failure_mode} -> Print.PD.pp_desc,
     nextval : {loc : ErrorMsg.span, seqName : string option, seqE : Print.PD.pp_desc} -> Print.PD.pp_desc,
     nextvalPrepared : {loc : ErrorMsg.span, id : int, query : string} -> Print.PD.pp_desc,
     setval : {loc : ErrorMsg.span, seqE : Print.PD.pp_desc, count : Print.PD.pp_desc} -> Print.PD.pp_desc,
     sqlifyString : string -> string,
     p_cast : string * sql_type -> string,
     p_blank : int * sql_type -> string,
     supportsDeleteAs : bool,
     supportsUpdateAs : bool,
     createSequence : string -> string,
     textKeysNeedLengths : bool,
     supportsNextval : bool,
     supportsNestedPrepared : bool,
     sqlPrefix : string,
     supportsOctetLength : bool,
     trueString : string,
     falseString : string,
     onlyUnion : bool,
     nestedRelops : bool
}

val dbmses = ref ([] : dbms list)
val curDb = ref ({name = "",
                  header = "",
                  link = "",
                  p_sql_type = fn _ => "",
                  init = fn _ => Print.box [],
                  query = fn _ => Print.box [],
                  queryPrepared = fn _ => Print.box [],
                  dml = fn _ => Print.box [],
                  dmlPrepared = fn _ => Print.box [],
                  nextval = fn _ => Print.box [],
                  nextvalPrepared = fn _ => Print.box [],
                  setval = fn _ => Print.box [],
                  sqlifyString = fn s => s,
                  p_cast = fn _ => "",
                  p_blank = fn _ => "",
                  supportsDeleteAs = false,
                  supportsUpdateAs = false,
                  createSequence = fn _ => "",
                  textKeysNeedLengths = false,
                  supportsNextval = false,
                  supportsNestedPrepared = false,
                  sqlPrefix = "",
                  supportsOctetLength = false,
                  trueString = "",
                  falseString = "",
                  onlyUnion = false,
                  nestedRelops = false} : dbms)

fun addDbms v = dbmses := v :: !dbmses
fun setDbms s =
    case List.find (fn db => #name db = s) (!dbmses) of
        NONE => raise Fail ("Unknown DBMS " ^ s)
      | SOME db => curDb := db
fun currentDbms () = !curDb

val dbstring = ref (NONE : string option)
fun setDbstring so = dbstring := so
fun getDbstring () = !dbstring

val exe = ref (NONE : string option)
fun setExe so = exe := so
fun getExe () = !exe

val sql = ref (NONE : string option)
fun setSql so = sql := so
fun getSql () = !sql

val coreInline = ref 20
fun setCoreInline n = coreInline := n
fun getCoreInline () = !coreInline

val monoInline = ref 100
fun setMonoInline n = monoInline := n
fun getMonoInline () = !monoInline

val staticLinking = ref false
fun setStaticLinking b = staticLinking := b
fun getStaticLinking () = !staticLinking

val deadlines = ref false
fun setDeadlines b = deadlines := b
fun getDeadlines () = !deadlines

val sigFile = ref (NONE : string option)
fun setSigFile v = sigFile := v
fun getSigFile () = !sigFile

structure SS = BinarySetFn(struct
                           type ord_key = string
                           val compare = String.compare
                           end)

val safeGet = ref SS.empty
fun setSafeGets ls = safeGet := SS.addList (SS.empty, ls)
fun isSafeGet x = SS.member (!safeGet, x)

val onError = ref (NONE : (string * string list * string) option)
fun setOnError x = onError := x
fun getOnError () = !onError

val limits = ["messages", "clients", "headers", "page", "heap", "script",
              "inputs", "subinputs", "cleanup", "deltas", "transactionals",
              "globals", "database", "time"]

val limitsList = ref ([] : (string * int) list)
fun addLimit (v as (name, _)) =
    if List.exists (fn name' => name' = name) limits then
        (limitsList := v :: !limitsList;
         if name = "time" then
             setDeadlines true
         else
             ())
    else
        raise Fail ("Unknown limit category '" ^ name ^ "'")
fun limits () = !limitsList

val minHeap = ref 0
fun setMinHeap n = if n >= 0 then minHeap := n else raise Fail "Trying to set negative minHeap"
fun getMinHeap () = !minHeap

structure SS = BinarySetFn(struct
                           type ord_key = string
                           val compare = String.compare
                           end)

val alwaysInline = ref SS.empty
fun addAlwaysInline s = alwaysInline := SS.add (!alwaysInline, s)
fun checkAlwaysInline s = SS.member (!alwaysInline, s)

val noXsrfProtection = ref SS.empty
fun addNoXsrfProtection s = noXsrfProtection := SS.add (!noXsrfProtection, s)
fun checkNoXsrfProtection s = SS.member (!noXsrfProtection, s)

val timeFormat = ref "%c"
fun setTimeFormat v = timeFormat := v
fun getTimeFormat () = !timeFormat

end