This file is indexed.

/usr/share/ada/adainclude/aws/aws-status-set.adb is in libaws2.10.2-dev 2.10.2-4.

This file is owned by root:root, with mode 0o644.

The actual contents of the file can be viewed below.

  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
------------------------------------------------------------------------------
--                              Ada Web Server                              --
--                                                                          --
--                     Copyright (C) 2000-2011, AdaCore                     --
--                                                                          --
--  This library is free software; you can redistribute it and/or modify    --
--  it under the terms of the GNU General Public License as published by    --
--  the Free Software Foundation; either version 2 of the License, or (at   --
--  your option) any later version.                                         --
--                                                                          --
--  This library is distributed in the hope that it will be useful, but     --
--  WITHOUT ANY WARRANTY; without even the implied warranty of              --
--  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU       --
--  General Public License for more details.                                --
--                                                                          --
--  You should have received a copy of the GNU General Public License       --
--  along with this library; if not, write to the Free Software Foundation, --
--  Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.          --
--                                                                          --
------------------------------------------------------------------------------

with Ada.Characters.Handling;
with Ada.Strings.Fixed;
with Ada.Unchecked_Deallocation;

with AWS.Headers.Set;
with AWS.Headers.Values;
with AWS.Messages;
with AWS.Net.Buffered;
with AWS.Parameters.Set;
with AWS.Server;
with AWS.Translator;
with AWS.URL.Set;

package body AWS.Status.Set is

   use Ada.Strings;

   procedure Authorization (D : in out Data);
   --  Parse the Authorization parameters from the Authorization header value

   procedure Update_Data_From_Header (D : in out Data);
   --  Update some Data fields from the internal Data header container.
   --  The Update_Data_From_Header should be called after the complete
   --  header parsing.

   -------------------
   -- Add_Parameter --
   -------------------

   procedure Add_Parameter
     (D           : in out Data;
      Name, Value : String;
      Decode      : Boolean := True;
      Replace     : Boolean := False) is
   begin
      if Replace then
         AWS.Parameters.Set.Update
           (AWS.URL.Set.Parameters (D.URI'Access).all, Name, Value, Decode);
      else
         AWS.Parameters.Set.Add
           (AWS.URL.Set.Parameters (D.URI'Access).all, Name, Value, Decode);
      end if;
   end Add_Parameter;

   --------------------
   -- Add_Parameters --
   --------------------

   procedure Add_Parameters (D : in out Data; Parameters : String) is
   begin
      AWS.Parameters.Set.Add
        (AWS.URL.Set.Parameters (D.URI'Access).all, Parameters);
   end Add_Parameters;

   -----------------
   -- Append_Body --
   -----------------

   procedure Append_Body
     (D      : in out Data;
      Buffer : Stream_Element_Array;
      Trim   : Boolean := False) is
   begin
      if D.Binary_Data = null then
         D.Binary_Data := new Containers.Memory_Streams.Stream_Type;
      end if;

      Containers.Memory_Streams.Append (D.Binary_Data.all, Buffer, Trim);
   end Append_Body;

   -----------------
   -- Attachments --
   -----------------

   procedure Attachments
     (D : in out Data; Attachments : AWS.Attachments.List) is
   begin
      D.Attachments := Attachments;
   end Attachments;

   ------------------
   -- Authenticate --
   ------------------

   procedure Authenticate
     (D                      : in out Data;
      Authorization_Mode     : Authorization_Type;
      Authorization_Name     : String;
      Authorization_Password : String) is
   begin
      D.Auth_Mode     := Authorization_Mode;
      D.Auth_Name     := To_Unbounded_String (Authorization_Name);
      D.Auth_Password := To_Unbounded_String (Authorization_Password);
   end Authenticate;

   -------------------
   -- Authorization --
   -------------------

   procedure Authorization (D : in out Data) is

      Header_Value : constant String
        := AWS.Headers.Get (D.Header, Messages.Authorization_Token);

      procedure Named_Value (Name, Value : String; Quit : in out Boolean);

      procedure Value (Item : String; Quit : in out Boolean);

      -----------------
      -- Named_Value --
      -----------------

      procedure Named_Value (Name, Value : String; Quit : in out Boolean) is

         type Digest_Attribute
            is (Username, Realm, Nonce, NC, CNonce,
                QOP, URI, Response, Algorithm);
         --  The enumeration type is using to be able to
         --  use the name in the case statement.
         --  The case statement has usially faster implementation.

         Attribute : Digest_Attribute;

         function "+" (Item : String) return Unbounded_String
           renames To_Unbounded_String;

      begin
         begin
            Attribute := Digest_Attribute'Value (Name);
         exception
            when Constraint_Error =>
               --  Ignoring unrecognized attribute
               return;
         end;

         --  Check if the attributes is for the Digest authenticatio schema.
         --  AWS does not support other authentication schemas with attributes
         --  now.

         if D.Auth_Mode /= Digest then
            Quit := True;
         end if;

         case Attribute is
            when Username  => D.Auth_Name     := +Value;
            when Realm     => D.Auth_Realm    := +Value;
            when NC        => D.Auth_NC       := +Value;
            when CNonce    => D.Auth_CNonce   := +Value;
            when QOP       => D.Auth_QOP      := +Value;
            when Nonce     => D.Auth_Nonce    := +Value;
            when Response  => D.Auth_Response := +Value;
            when URI       => D.Auth_URI      := +Value;
            when Algorithm =>
               if Value /= "MD5" then
                  raise Constraint_Error
                    with "Only MD5 algorithm is supported.";
               end if;
         end case;
      end Named_Value;

      -----------
      -- Value --
      -----------

      procedure Value (Item : String; Quit : in out Boolean) is
         Upper_Item : constant String
           := Ada.Characters.Handling.To_Upper (Item);
      begin
         if Upper_Item = "BASIC" then

            D.Auth_Mode := Basic;

            Quit := True;

            --  We could not continue to parse Basic authentication
            --  by the regular way, because next value is Base64 encoded
            --  "username:password", it is possibe to have symbol '=' there,
            --  our parser could think that it is name/value delimiter.

            declare
               use Ada.Streams;

               Auth_Str : constant String
                 := Translator.To_String (Translator.Base64_Decode
                   (Header_Value (Item'Length + 2 .. Header_Value'Last)));

               Delimit  : constant Natural := Fixed.Index (Auth_Str, ":");
            begin
               if Delimit = 0 then
                  D.Auth_Name := To_Unbounded_String (Auth_Str);

               else
                  D.Auth_Name
                    := To_Unbounded_String (Auth_Str (1 .. Delimit - 1));
                  D.Auth_Password
                    := To_Unbounded_String
                         (Auth_Str (Delimit + 1 .. Auth_Str'Last));
               end if;
            end;

         elsif Upper_Item = "DIGEST" then
            D.Auth_Mode := Digest;

         end if;
      end Value;

      procedure Parse is new Headers.Values.Parse (Value, Named_Value);

   begin
      Parse (Header_Value);
   end Authorization;

   ------------
   -- Binary --
   ------------

   procedure Binary (D : in out Data; Parameter : Stream_Element_Array) is
   begin
      if D.Binary_Data = null then
         D.Binary_Data := new Containers.Memory_Streams.Stream_Type;
      end if;

      Containers.Memory_Streams.Append (D.Binary_Data.all, Parameter);
   end Binary;

   -------------------------------
   -- Case_Sensitive_Parameters --
   -------------------------------

   procedure Case_Sensitive_Parameters (D : in out Data; Mode : Boolean) is
   begin
      AWS.Parameters.Set.Case_Sensitive
        (AWS.URL.Set.Parameters (D.URI'Access).all, Mode);
   end Case_Sensitive_Parameters;

   ---------------------
   -- Connection_Data --
   ---------------------

   procedure Connection_Data
     (D        : in out Data;
      Host     : String;
      Port     : Positive;
      Security : Boolean) is
   begin
      AWS.URL.Set.Connection_Data (D.URI, Host, Port, Security);
   end Connection_Data;

   -------------------------
   -- Delete_Idle_Session --
   -------------------------

   procedure Delete_Idle_Session (D : in out Data) is
   begin
      if D.Session_Created
        and then AWS.Session.Delete_If_Empty (D.Session_Id)
      then
         D.Session_Created := False;
      end if;
   end Delete_Idle_Session;

   ----------
   -- Free --
   ----------

   procedure Free (D : in out Data) is
      procedure Unchecked_Free is new Ada.Unchecked_Deallocation
        (Containers.Memory_Streams.Stream_Type, Memory_Stream_Access);
   begin
      if D.Binary_Data /= null then
         Containers.Memory_Streams.Close (D.Binary_Data.all);
         Unchecked_Free (D.Binary_Data);
      end if;

      AWS.Attachments.Reset (D.Attachments, Delete_Files => True);
   end Free;

   ----------------
   -- Keep_Alive --
   ----------------

   procedure Keep_Alive (D : in out Data; Flag : Boolean) is
   begin
      D.Keep_Alive := Flag;
   end Keep_Alive;

   ----------------
   -- Parameters --
   ----------------

   procedure Parameters (D : in out Data; Set : AWS.Parameters.List) is
   begin
      AWS.URL.Set.Parameters (D.URI, Set);
   end Parameters;

   --------------------------
   -- Parameters_From_Body --
   --------------------------

   procedure Parameters_From_Body (D : in out Data) is
   begin
      AWS.Parameters.Set.Add
        (AWS.URL.Set.Parameters (D.URI'Access).all, D.Binary_Data.all);
   end Parameters_From_Body;

   ---------------
   -- Read_Body --
   ---------------

   procedure Read_Body
     (Socket   : Net.Socket_Type'Class;
      D        : in out Data;
      Boundary : String := "")
   is
      use Containers.Memory_Streams;
      use type Stream_Element_Offset;

      procedure Read_Whole_Body;
      --  Read the whole body (Content_Length octets)

      ---------------------
      -- Read_Whole_Body --
      ---------------------

      procedure Read_Whole_Body is
         use Ada.Streams;
         Buffer : Stream_Element_Array (1 .. 4096);
         Rest   : Stream_Element_Offset :=
                    Stream_Element_Offset (D.Content_Length);
      begin
         while Rest > Buffer'Length loop
            Rest := Rest - Buffer'Length;
            Net.Buffered.Read (Socket, Buffer);
            Append (D.Binary_Data.all, Buffer);
         end loop;

         Net.Buffered.Read (Socket, Buffer (1 .. Rest));
         Append (D.Binary_Data.all, Buffer (1 .. Rest), Trim => True);
      end Read_Whole_Body;

   begin
      if D.Binary_Data = null then
         D.Binary_Data := new Stream_Type;
      end if;

      if Boundary = "" then
         Read_Whole_Body;

      else
         declare
            Content : constant Stream_Element_Array :=
                        Net.Buffered.Read_Until
                          (Socket,
                           Translator.To_Stream_Element_Array (Boundary));
         begin
            if Content'Length > Boundary'Length + 2 then
               Append
                 (D.Binary_Data.all,
                  Content (Content'First
                    .. Content'Last - Boundary'Length - 2),
                  Trim => True);
               --  Boundary'Length - 2 to remove the boundary and also the CRLF
               --  (before the boundary) which is not part of the body.
            end if;
         end;
      end if;
   end Read_Body;

   -----------------
   -- Read_Header --
   -----------------

   procedure Read_Header (Socket : Net.Socket_Type'Class; D : in out Data) is
   begin
      Headers.Set.Read (Socket, D.Header);
      Update_Data_From_Header (D);
   end Read_Header;

   -------------
   -- Request --
   -------------

   procedure Request
     (D            : in out Data;
      Method       : String;
      URI          : String;
      HTTP_Version : String) is
   begin
      D.Calendar_Time  := Ada.Calendar.Clock;
      D.Monotonic_Time := Ada.Real_Time.Clock;

      --  Method is case sensitive

      if Method = Messages.Options_Token then
         D.Method := Status.OPTIONS;

      elsif Method = Messages.Get_Token then
         D.Method := Status.GET;

      elsif Method = Messages.Head_Token then
         D.Method := Status.HEAD;

      elsif Method = Messages.Post_Token then
         D.Method := Status.POST;

      elsif Method = Messages.Put_Token then
         D.Method := Status.PUT;

      elsif Method = Messages.Delete_Token then
         D.Method := Status.DELETE;

      elsif Method = Messages.Trace_Token then
         D.Method := Status.TRACE;

      elsif Method = Messages.Connect_Token then
         D.Method := Status.CONNECT;

      else
         D.Method := Status.EXTENSION_METHOD;
      end if;

      D.Method_String := To_Unbounded_String (Method);
      D.HTTP_Version  := To_Unbounded_String (HTTP_Version);

      --  Parse URI and keep parameters case sensitivity flag

      URL.Set.Parse (D.URI, URI, False, False);
   end Request;

   -----------
   -- Reset --
   -----------

   procedure Reset (D : in out Data) is
   begin
      Free (D);

      D.Method            := GET;
      D.HTTP_Version      := Null_Unbounded_String;
      D.Content_Length    := 0;
      D.Auth_Mode         := None;
      D.Auth_Name         := Null_Unbounded_String;
      D.Auth_Password     := Null_Unbounded_String;
      D.Auth_Realm        := Null_Unbounded_String;
      D.Auth_Nonce        := Null_Unbounded_String;
      D.Auth_NC           := Null_Unbounded_String;
      D.Auth_CNonce       := Null_Unbounded_String;
      D.Auth_QOP          := Null_Unbounded_String;
      D.Auth_URI          := Null_Unbounded_String;
      D.Auth_Response     := Null_Unbounded_String;
      D.Session_Id        := AWS.Session.No_Session;
      D.Session_Created   := False;
      D.Session_Timed_Out := False;
      D.Uploaded          := False;
      D.Monotonic_Time    := Ada.Real_Time.Time_First;

      AWS.Headers.Set.Reset (D.Header);
      AWS.Parameters.Set.Reset (AWS.URL.Set.Parameters (D.URI'Access).all);
   end Reset;

   -------------
   -- Session --
   -------------

   procedure Session (D : in out Data) is
   begin
      D.Session_Id      := AWS.Session.Create;
      D.Session_Created := True;
   end Session;

   ------------
   -- Socket --
   ------------

   procedure Socket (D : in out Data; Sock : Net.Socket_Access) is
   begin
      D.Socket   := Sock;
      D.Peername := To_Unbounded_String (Net.Peer_Addr (Sock.all));
   end Socket;

   -----------------------------
   -- Update_Data_From_Header --
   -----------------------------

   procedure Update_Data_From_Header (D : in out Data) is
      AWS_Session_Name : constant String := Server.Session_Name;
   begin
      Authorization (D);

      declare
         Content_Length : constant String := AWS.Headers.Get
           (D.Header, Messages.Content_Length_Token);
      begin
         if Content_Length /= "" then
            D.Content_Length := Integer'Value (Content_Length);
         end if;
      end;

      D.SOAP_Action := AWS.Headers.Exist (D.Header, Messages.SOAPAction_Token);

      declare
         use AWS.Headers;

         Cookies_Set : constant VString_Array :=
                         Get_Values (D.Header, Messages.Cookie_Token);
      begin
         for Idx in Cookies_Set'Range loop

            declare
               --  The expected Cookie line is:
               --  Cookie: ... AWS=<cookieID>[,;] ...

               use type AWS.Session.Id;

               procedure Value
                 (Item : String;
                  Quit : in out Boolean) is null;
               --  Called for every un-named value read from the header value

               procedure Named_Value
                 (Name  : String;
                  Value : String;
                  Quit  : in out Boolean);
               --  Called for every named value read from the header value

               -----------------
               -- Named_Value --
               -----------------

               procedure Named_Value
                 (Name  : String;
                  Value : String;
                  Quit  : in out Boolean) is
               begin
                  --  Check if it is current process Cookie

                  if Name /= AWS_Session_Name then
                     return;
                  end if;

                  D.Session_Id := AWS.Session.Value (Value);

                  --  Check if the cookie value was correct

                  if D.Session_Id = AWS.Session.No_Session then
                     return;
                  end if;

                  --  Check if cookie exists in the server

                  if not AWS.Session.Exist (D.Session_Id) then
                     --  Reset to empty cookie if session does not exists.
                     --  This is a case where a session has timed out.

                     D.Session_Id        := AWS.Session.No_Session;
                     D.Session_Timed_Out := True;

                     return;
                  end if;

                  --  Check if the session has expired, even though it hasn't
                  --  been deleted yet by the cleaner task.

                  if AWS.Session.Has_Expired (D.Session_Id) then
                     AWS.Session.Delete (D.Session_Id);
                     D.Session_Id        := AWS.Session.No_Session;
                     D.Session_Timed_Out := True;
                     return;
                  end if;

                  --  If all filters done, we found our cookie !
                  Quit := True;
               end Named_Value;

               -----------
               -- Parse --
               -----------

               procedure Parse is
                  new AWS.Headers.Values.Parse (Value, Named_Value);

            begin
               Parse (To_String (Cookies_Set (Idx)));

               --  Exit when we have found an existing cookie
               exit when D.Session_Id /= AWS.Session.No_Session;
            end;
         end loop;
      end;
   end Update_Data_From_Header;

   --------------
   -- Uploaded --
   --------------

   procedure Uploaded (D : in out Data) is
   begin
      D.Uploaded := True;
   end Uploaded;

end AWS.Status.Set;