/usr/share/ada/adainclude/aws/aws-response-set.adb is in libaws3.2.0-dev 3.2.0-3.
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 | ------------------------------------------------------------------------------
-- Ada Web Server --
-- --
-- Copyright (C) 2002-2014, AdaCore --
-- --
-- This library is free software; you can redistribute it and/or modify --
-- it under terms of the GNU General Public License as published by the --
-- Free Software Foundation; either version 3, 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. --
-- --
-- --
-- --
-- --
-- --
-- You should have received a copy of the GNU General Public License and --
-- a copy of the GCC Runtime Library Exception along with this program; --
-- see the files COPYING3 and COPYING.RUNTIME respectively. If not, see --
-- <http://www.gnu.org/licenses/>. --
-- --
-- --
-- --
-- --
-- --
-- --
-- --
------------------------------------------------------------------------------
pragma Ada_2012;
with Ada.Characters.Handling;
with Ada.Strings.Fixed;
with AWS.Digest;
with AWS.Headers.Set;
with AWS.Headers.Values;
with AWS.Resources.Streams.Memory.ZLib;
with AWS.Resources.Streams.ZLib;
with AWS.Translator;
with ZLib;
package body AWS.Response.Set is
package RSM renames AWS.Resources.Streams.Memory;
procedure Check_Memory_Stream (D : in out Data) with Inline;
-- Test if the memory stream allocated and create it if necessary
procedure Clear_Memory_Stream (D : in out Data) with Inline;
-- Test if the memory stream allocated and create it if necessary,
-- if the stream already created, clear it.
----------------
-- Add_Header --
----------------
procedure Add_Header
(D : in out Data;
Name : String;
Value : String) is
begin
Headers.Set.Add (D.Header, Name, Value);
end Add_Header;
-----------------
-- Append_Body --
-----------------
procedure Append_Body
(D : in out Data;
Item : Streams.Stream_Element_Array) is
begin
Check_Memory_Stream (D);
RSM.Append (RSM.Stream_Type'Class (D.Stream.all), Item);
end Append_Body;
procedure Append_Body (D : in out Data; Item : String) is
begin
Append_Body (D, Translator.To_Stream_Element_Array (Item));
end Append_Body;
--------------------
-- Authentication --
--------------------
procedure Authentication
(D : in out Data;
Realm : String;
Mode : Authentication_Mode := Basic;
Stale : Boolean := False)
is
N : Positive := 1;
-- The index for the update of WWW-Authenticate header values.
-- We are not using AWS.Headers.Set.Add routine for add WWW-Authenticate
-- header lines, because user could call this routine more than once.
begin
-- In case of Authenticate = Any
-- We should create both header lines
-- WWW-Authenticate: Basic
-- and
-- WWW-Authenticate: Digest
if Mode = Digest or else Mode = Any then
Headers.Set.Update
(D.Header,
Name => Messages.WWW_Authenticate_Token,
Value => "Digest qop=""auth"", realm=""" & Realm
& """, stale=""" & Boolean'Image (Stale)
& """, nonce="""
& String (AWS.Digest.Create_Nonce) & """",
N => N);
N := N + 1;
end if;
if Mode = Basic or else Mode = Any then
Headers.Set.Update
(D.Header,
Name => Messages.WWW_Authenticate_Token,
Value => "Basic realm=""" & Realm & """",
N => N);
end if;
D.Status_Code := Messages.S401;
end Authentication;
-------------------
-- Cache_Control --
-------------------
procedure Cache_Control
(D : in out Data;
Value : Messages.Cache_Option)
is
use type Messages.Cache_Option;
begin
if Value /= Messages.Unspecified then
Headers.Set.Update
(D.Header,
Name => Messages.Cache_Control_Token,
Value => String (Value));
if Strings.Fixed.Index (String (Value), "no-cache") /= 0 then
-- There is a no-cache option specified for the Cache-Control
-- header. Add "Pragma: no-cache" for compatibility with HTTP/1.0
-- protocol.
Headers.Set.Update
(D.Header, Name => Messages.Pragma_Token, Value => "no-cache");
end if;
end if;
end Cache_Control;
-------------------------
-- Check_Memory_Stream --
-------------------------
procedure Check_Memory_Stream (D : in out Data) is
use type Resources.Streams.Stream_Access;
begin
if D.Stream = null then
D.Stream := new RSM.Stream_Type;
D.Mode := Message;
end if;
end Check_Memory_Stream;
-----------
-- Clear --
-----------
procedure Clear (D : in out Data) is
use type Resources.Streams.Stream_Access;
begin
if D.Stream /= null then
if not D.Ref_Counter.Stream_Taken then
Resources.Streams.Close (D.Stream.all);
end if;
Unchecked_Free (D.Stream);
end if;
Headers.Set.Reset (D.Header);
D.Mode := No_Data;
D.Status_Code := Messages.S200;
D.Filename := Null_Unbounded_String;
end Clear;
-------------------------
-- Clear_Memory_Stream --
-------------------------
procedure Clear_Memory_Stream (D : in out Data) is
use type Resources.Streams.Stream_Access;
begin
if D.Stream = null then
D.Stream := new RSM.Stream_Type;
D.Mode := Message;
else
RSM.Clear (RSM.Stream_Type (D.Stream.all));
end if;
end Clear_Memory_Stream;
-------------------
-- Clear_Session --
-------------------
procedure Clear_Session (D : in out Data) is
begin
Add_Header (D, "Set-Cookie", "AWS=");
end Clear_Session;
--------------------
-- Close_Resource --
--------------------
procedure Close_Resource
(D : in out Data;
State : Boolean) is
begin
D.Close_Stream := State;
end Close_Resource;
------------------
-- Content_Type --
------------------
procedure Content_Type
(D : in out Data;
Value : String) is
begin
D.Content_Type := To_Unbounded_String (Value);
end Content_Type;
-------------------
-- Data_Encoding --
-------------------
procedure Data_Encoding
(D : in out Data;
Encoding : Messages.Content_Encoding;
Direction : Encoding_Direction := Encode)
is
use type Resources.Streams.Stream_Access;
Header : RSM.ZLib.Header_Type := ZLib.None;
begin
if D.Stream /= null then
-- The stream is already active, there is nothing to do, we can't
-- change the encoding when data has alredy been added into the
-- stream.
return;
end if;
D.Mode := Message;
case Encoding is
when Messages.Identity => D.Stream := new RSM.Stream_Type;
when Messages.GZip => Header := ZLib.GZip;
when Messages.Deflate => Header := ZLib.Default;
end case;
if D.Stream = null then
-- ZLib encoding/decoding is necessary
D.Stream := new RSM.ZLib.Stream_Type;
-- Create the encoding stream, now initialize it
if Direction = Encode then
RSM.ZLib.Deflate_Initialize
(RSM.ZLib.Stream_Type (D.Stream.all), Header => Header);
-- Set the Content-Encoding header value for server's response
--
-- Looks like IE in the Windows Mobile 5.0 do not understand
-- content coding in the upper case. Bug found in the
-- User-Agent:
-- Mozilla/4.0 (compatible; MSIE 4.01; Windows CE; PPC; 240x320)
Update_Header
(D,
Messages.Content_Encoding_Token,
Ada.Characters.Handling.To_Lower
(Messages.Content_Encoding'Image (Encoding)));
else
RSM.ZLib.Inflate_Initialize
(RSM.ZLib.Stream_Type (D.Stream.all), Header => Header);
end if;
end if;
end Data_Encoding;
-------------
-- Expires --
-------------
procedure Expires
(D : in out Data;
Value : Calendar.Time) is
begin
Expires (D, Messages.To_HTTP_Date (Value));
end Expires;
procedure Expires
(D : in out Data;
Value : String) is
begin
Headers.Set.Update
(D.Header,
Name => Messages.Expires_Token,
Value => Value);
end Expires;
--------------
-- Filename --
--------------
procedure Filename
(D : in out Data;
Value : String) is
begin
D.Filename := To_Unbounded_String (Value);
D.Mode := File;
end Filename;
--------------
-- Is_Valid --
--------------
function Is_Valid (D : Data) return Boolean is
use type Messages.Status_Code;
Redirection_Code : Boolean;
begin
case D.Status_Code is
when
Messages.S300 | -- Section 10.3.1: Multiple Choices
Messages.S301 | -- Section 10.3.2: Moved Permanently
Messages.S302 | -- Section 10.3.3: Found
Messages.S303 | -- Section 10.3.4: See Other
Messages.S305 | -- Section 10.3.6: Use Proxy
Messages.S307 -- Section 10.3.8: Temporary Redirect
=>
Redirection_Code := True;
when others =>
Redirection_Code := False;
end case;
return (Redirection_Code
xor not Headers.Exist
(D.Header,
Messages.Location_Token))
and then (D.Status_Code = Messages.S401
xor not Headers.Exist
(D.Header,
Messages.WWW_Authenticate_Token));
end Is_Valid;
----------------
-- Keep_Alive --
----------------
procedure Keep_Alive (D : in out Data; State : Boolean) is
begin
D.Keep_Alive := State;
end Keep_Alive;
--------------
-- Location --
--------------
procedure Location
(D : in out Data;
Value : String) is
begin
Headers.Set.Update
(D.Header,
Name => Messages.Location_Token,
Value => Value);
end Location;
------------------
-- Message_Body --
------------------
procedure Message_Body
(D : in out Data;
Value : Streams.Stream_Element_Array) is
begin
Clear_Memory_Stream (D);
RSM.Append (RSM.Stream_Type'Class (D.Stream.all), Value);
end Message_Body;
procedure Message_Body
(D : in out Data;
Value : String) is
begin
Message_Body (D, To_Unbounded_String (Value));
end Message_Body;
procedure Message_Body
(D : in out Data;
Value : Unbounded_String)
is
Chunk_Size : constant := 8 * 1_024;
Len : constant Natural := Length (Value);
First, Last : Natural;
begin
-- Prepare the memory stream
Clear_Memory_Stream (D);
First := 1;
loop
Last := Integer'Min (First + Chunk_Size - 1, Len);
RSM.Append
(RSM.Stream_Type'Class (D.Stream.all),
Translator.To_Stream_Element_Array (Slice (Value, First, Last)));
First := Last + 1;
exit when First > Len;
end loop;
end Message_Body;
----------
-- Mode --
----------
procedure Mode
(D : in out Data;
Value : Data_Mode) is
begin
D.Mode := Value;
end Mode;
-----------------
-- Read_Header --
-----------------
procedure Read_Header
(Socket : Net.Socket_Type'Class;
D : in out Data) is
begin
Headers.Set.Read (Socket, D.Header);
-- Set D.Content_Type with the value read from the socket
D.Content_Type := To_Unbounded_String
(Headers.Get (D.Header, Messages.Content_Type_Token));
-- Set the Filename if any
if AWS.Headers.Exist (D.Header, Messages.Content_Disposition_Token) then
D.Filename := To_Unbounded_String
(AWS.Headers.Values.Search
(AWS.Headers.Get
(D.Header, Messages.Content_Disposition_Token), "filename"));
end if;
end Read_Header;
-----------------
-- Status_Code --
-----------------
procedure Status_Code
(D : in out Data;
Value : Messages.Status_Code) is
begin
D.Status_Code := Value;
end Status_Code;
------------
-- Stream --
------------
procedure Stream
(D : in out Data;
Handle : not null access Resources.Streams.Stream_Type'Class;
Encoding : Messages.Content_Encoding := Messages.Identity)
is
use type Messages.Content_Encoding;
begin
case Encoding is
when Messages.GZip =>
D.Stream := Resources.Streams.ZLib.Deflate_Create
(Resources.Streams.Stream_Access (Handle),
Header => ZLib.GZip);
when Messages.Deflate =>
D.Stream := Resources.Streams.ZLib.Deflate_Create
(Resources.Streams.Stream_Access (Handle),
Header => ZLib.Default);
when Messages.Identity =>
D.Stream := Resources.Streams.Stream_Access (Handle);
end case;
if Encoding /= Messages.Identity then
-- We should not send "Content-Encoding: Identity" header line
--
-- RFC 2616
-- 3.5 Content Codings
-- ...
-- identity
-- The default (identity) encoding; the use of no transformation
-- whatsoever. This content-coding is used only in the Accept-
-- Encoding header, and SHOULD NOT be used in the Content-Encoding
-- header.
Update_Header
(D,
Messages.Content_Encoding_Token,
Ada.Characters.Handling.To_Lower
(Messages.Content_Encoding'Image (Encoding)));
elsif D.Header.Get (Messages.Content_Encoding_Token) /= "" then
raise Constraint_Error
with "Response content encoding is not supported.";
end if;
D.Mode := Stream;
end Stream;
-------------------
-- Update_Header --
-------------------
procedure Update_Header
(D : in out Data;
Name : String;
Value : String;
N : Positive := 1) is
begin
Headers.Set.Update (D.Header, Name, Value, N);
end Update_Header;
end AWS.Response.Set;
|