/usr/share/ada/adainclude/aws/aws-mime.adb is in libaws3.3.2-dev 3.3.2-2.
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 | ------------------------------------------------------------------------------
-- Ada Web Server --
-- --
-- Copyright (C) 2000-2014, 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. --
-- --
-- As a special exception under Section 7 of GPL version 3, you are --
-- granted additional permissions described in the GCC Runtime Library --
-- Exception, version 3.1, as published by the Free Software Foundation. --
-- --
-- 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/>. --
-- --
-- As a special exception, if other files instantiate generics from this --
-- unit, or you link this unit with other files to produce an executable, --
-- this unit does not by itself cause the resulting executable to be --
-- covered by the GNU General Public License. This exception does not --
-- however invalidate any other reasons why the executable file might be --
-- covered by the GNU Public License. --
------------------------------------------------------------------------------
pragma Ada_2012;
with Ada.Characters.Handling;
with Ada.Containers.Indefinite_Hashed_Maps;
with Ada.Directories;
with Ada.Strings.Fixed;
with Ada.Strings.Hash_Case_Insensitive;
with Ada.Strings.Maps;
with Ada.Strings.Unbounded;
with GNAT.Regexp;
with AWS.Config;
with AWS.Resources.Files;
with AWS.Utils;
package body AWS.MIME is
use Ada;
use Ada.Strings.Unbounded;
use GNAT;
Default_Content_Type : constant String := Application_Octet_Stream;
-- Default MIME Content Type used if nothing matches
-- Table regexp components
type R_MIME_Type is record
Regexp : GNAT.Regexp.Regexp; -- Filename Regexp
MIME_Type : Unbounded_String; -- Associated content type
end record;
type Node;
type Node_Access is access Node;
type Node is record
Item : R_MIME_Type;
Next : Node_Access;
end record;
function Equivalent_Keys (Left, Right : String) return Boolean;
package Key_Value is new Ada.Containers.Indefinite_Hashed_Maps
(String, String, Ada.Strings.Hash_Case_Insensitive, Equivalent_Keys, "=");
-- Protected Set to access tables handling MIME types
protected Set is
function Get (Filename : String; Default : String) return String;
-- Returns Filename's MIME content type
function Extension (Content_Type : String) return String;
-- Returns the best guess of the extension to use for the Content Type
procedure Add_Extension (Ext : String; MIME_Type : String);
-- Add Ext to the set of known content type extensions
procedure Add_Regexp
(Filename : Regexp.Regexp;
MIME_Type : String);
-- Add Filename to the set of known content type regular expressions
private
Ext_Set : Key_Value.Map;
R_Table : Node_Access;
Last : Node_Access;
end Set;
function To_Lower (Item : String)
return String
renames Ada.Characters.Handling.To_Lower;
procedure Initialize;
-- Initialize MIME table
function Is_Type
(MIME_Type : String;
Type_Name : String) return Boolean with Inline;
-- Returns True if MIME_Type is of Type_Name type. The type name is the
-- first part of the MIME Type (the part before the /).
-------------------
-- Add_Extension --
-------------------
procedure Add_Extension (Ext : String; MIME_Type : String) is
begin
Set.Add_Extension (Ext, MIME_Type);
end Add_Extension;
----------------
-- Add_Regexp --
----------------
procedure Add_Regexp (Filename : String; MIME_Type : String) is
R_Filename : Regexp.Regexp;
begin
R_Filename := Regexp.Compile (Filename);
Set.Add_Regexp (R_Filename, MIME_Type);
exception
when Regexp.Error_In_Regexp =>
raise Constraint_Error
with "Regexp " & Filename & " can't be compiled";
end Add_Regexp;
------------------
-- Content_Type --
------------------
function Content_Type
(Filename : String;
Default : String := Application_Octet_Stream) return String is
begin
return Set.Get (Filename, Default => Default);
end Content_Type;
---------------------
-- Equivalent_Keys --
---------------------
function Equivalent_Keys (Left, Right : String) return Boolean is
begin
return To_Lower (Left) = To_Lower (Right);
end Equivalent_Keys;
---------------
-- Extension --
---------------
function Extension (Content_Type : String) return String is
begin
return Set.Extension (Content_Type);
end Extension;
----------------
-- Initialize --
----------------
procedure Initialize is
Cnf : constant Config.Object := Config.Get_Current with Unreferenced;
-- Declared to initialize the configuration object and then reading the
-- .ini file if any.
AWS_MIME : constant String := Config.MIME_Types;
begin
-- Text
Set.Add_Extension ("css", Text_CSS);
Set.Add_Extension ("html", Text_HTML);
Set.Add_Extension ("htm", Text_HTML);
Set.Add_Extension ("txt", Text_Plain);
Set.Add_Extension ("ada", Text_Plain);
Set.Add_Extension ("ads", Text_Plain);
Set.Add_Extension ("adb", Text_Plain);
Set.Add_Extension ("c", Text_Plain);
Set.Add_Extension ("h", Text_Plain);
Set.Add_Extension ("xml", Text_XML);
Set.Add_Extension ("sgml", Text_X_SGML);
Set.Add_Extension ("sgm", Text_X_SGML);
Set.Add_Extension ("js", Text_Javascript);
-- Image
Set.Add_Extension ("gif", Image_Gif);
Set.Add_Extension ("jpg", Image_Jpeg);
Set.Add_Extension ("jpeg", Image_Jpeg);
Set.Add_Extension ("jpe", Image_Jpeg);
Set.Add_Extension ("png", Image_Png);
Set.Add_Extension ("tiff", Image_Tiff);
Set.Add_Extension ("svg", Image_SVG);
Set.Add_Extension ("tif", Image_Tiff);
Set.Add_Extension ("pnm", Image_X_Portable_Anymap);
Set.Add_Extension ("pbm", Image_X_Portable_Bitmap);
Set.Add_Extension ("pgm", Image_X_Portable_Graymap);
Set.Add_Extension ("ppm", Image_X_Portable_Pixmap);
Set.Add_Extension ("rgb", Image_X_RGB);
Set.Add_Extension ("xbm", Image_X_Xbitmap);
Set.Add_Extension ("xpm", Image_X_Xpixmap);
Set.Add_Extension ("xwd", Image_X_Xwindowdump);
-- Application
Set.Add_Extension ("ps", Application_Postscript);
Set.Add_Extension ("eps", Application_Postscript);
Set.Add_Extension ("ai", Application_Postscript);
Set.Add_Extension ("pdf", Application_Pdf);
Set.Add_Extension ("zip", Application_Zip);
Set.Add_Extension ("iso", Application_Octet_Stream);
Set.Add_Extension ("exe", Application_Octet_Stream);
Set.Add_Extension ("hqx", Application_Mac_Binhex40);
Set.Add_Extension ("doc", Application_Msword);
Set.Add_Extension ("ppt", Application_Powerpoint);
Set.Add_Extension ("rtf", Application_Rtf);
Set.Add_Extension ("Z", Application_X_Compress);
Set.Add_Extension ("gtar", Application_X_GTar);
Set.Add_Extension ("gz", Application_X_GZip);
Set.Add_Extension ("latex", Application_X_Latex);
Set.Add_Extension ("sh", Application_X_Sh);
Set.Add_Extension ("shar", Application_X_Shar);
Set.Add_Extension ("tar", Application_X_Tar);
Set.Add_Extension ("tgz", Application_X_GZip);
Set.Add_Extension ("tcl", Application_X_Tcl);
Set.Add_Extension ("tex", Application_X_Tex);
Set.Add_Extension ("texinfo", Application_X_Texinfo);
Set.Add_Extension ("texi", Application_X_Texinfo);
Set.Add_Extension ("t", Application_X_Troff);
Set.Add_Extension ("tr", Application_X_Troff);
Set.Add_Extension ("roff", Application_X_Troff);
Set.Add_Extension ("man", Application_X_Troff_Man);
-- Audio
Set.Add_Extension ("au", Audio_Basic);
Set.Add_Extension ("snd", Audio_Basic);
Set.Add_Extension ("mpga", Audio_Mpeg);
Set.Add_Extension ("mp2", Audio_Mpeg);
Set.Add_Extension ("mp3", Audio_Mpeg);
Set.Add_Extension ("wav", Audio_X_Wav);
Set.Add_Extension ("ram", Audio_X_Pn_Realaudio);
Set.Add_Extension ("rpm", Audio_X_Pn_Realaudio_Plugin);
Set.Add_Extension ("ra", Audio_X_Realaudio);
-- Video
Set.Add_Extension ("mpeg", Video_Mpeg);
Set.Add_Extension ("mpg", Video_Mpeg);
Set.Add_Extension ("mpe", Video_Mpeg);
Set.Add_Extension ("qt", Video_Quicktime);
Set.Add_Extension ("mov", Video_Quicktime);
Set.Add_Extension ("avi", Video_X_Msvideo);
-- Check if there is a aws.mime file to read
if Utils.Is_Regular_File (AWS_MIME) then
Load (MIME_File => AWS_MIME);
end if;
end Initialize;
--------------------
-- Is_Application --
--------------------
function Is_Application (MIME_Type : String) return Boolean is
begin
return Is_Type (MIME_Type, "application/");
end Is_Application;
--------------
-- Is_Audio --
--------------
function Is_Audio (MIME_Type : String) return Boolean is
begin
return Is_Type (MIME_Type, "audio/");
end Is_Audio;
--------------
-- Is_Image --
--------------
function Is_Image (MIME_Type : String) return Boolean is
begin
return Is_Type (MIME_Type, "image/");
end Is_Image;
-------------
-- Is_Text --
-------------
function Is_Text (MIME_Type : String) return Boolean is
begin
return Is_Type (MIME_Type, "text/");
end Is_Text;
-------------
-- Is_Type --
-------------
function Is_Type
(MIME_Type : String;
Type_Name : String) return Boolean is
begin
return MIME_Type'Length > Type_Name'Length
and then
To_Lower
(MIME_Type
(MIME_Type'First .. MIME_Type'First + Type_Name'Length - 1))
= Type_Name;
end Is_Type;
--------------
-- Is_Video --
--------------
function Is_Video (MIME_Type : String) return Boolean is
begin
return Is_Type (MIME_Type, "video/");
end Is_Video;
----------
-- Load --
----------
procedure Load (MIME_File : String) is
use type Strings.Maps.Character_Set;
MIME_Set : constant Strings.Maps.Character_Set :=
not Strings.Maps.To_Set (" " & ASCII.HT);
-- The token would be any characters sequence
-- other then space an tab.
File : Resources.File_Type;
Buffer : String (1 .. 1_024);
Last : Natural;
-- MIME type slice (M_First .. M_Last)
M_First : Positive;
M_Last : Natural;
-- Extension slice (E_First .. E_Last)
E_First : Positive;
E_Last : Natural;
begin
Resources.Files.Open (File, MIME_File);
while not Resources.End_Of_File (File) loop
Resources.Get_Line (File, Buffer, Last);
-- Look for the MIME type
Strings.Fixed.Find_Token
(Buffer (Buffer'First .. Last),
MIME_Set, Strings.Inside, M_First, M_Last);
E_First := M_Last + 1;
Read_Extension : loop
Strings.Fixed.Find_Token
(Buffer (E_First .. Last),
MIME_Set, Strings.Inside, E_First, E_Last);
exit Read_Extension when E_Last = 0;
if Buffer (E_First) = '/' and then Buffer (E_Last) = '/' then
-- Regular expression is inside slashes
Add_Regexp
(Buffer (E_First + 1 .. E_Last - 1),
Buffer (M_First .. M_Last));
else
Set.Add_Extension
(Buffer (E_First .. E_Last),
Buffer (M_First .. M_Last));
end if;
E_First := E_Last + 1;
end loop Read_Extension;
end loop;
Resources.Close (File);
end Load;
---------
-- Set --
---------
protected body Set is
-------------------
-- Add_Extension --
-------------------
procedure Add_Extension (Ext : String; MIME_Type : String) is
begin
Key_Value.Include (Ext_Set, Ext, MIME_Type);
end Add_Extension;
----------------
-- Add_Regexp --
----------------
procedure Add_Regexp
(Filename : Regexp.Regexp;
MIME_Type : String)
is
Item : constant R_MIME_Type
:= (Filename, To_Unbounded_String (MIME_Type));
begin
if R_Table = null then
R_Table := new Node'(Item, null);
Last := R_Table;
else
Last.Next := new Node'(Item, null);
Last := Last.Next;
end if;
end Add_Regexp;
---------------
-- Extension --
---------------
function Extension (Content_Type : String) return String is
begin
if Content_Type = Default_Content_Type then
null; -- We don't want to give unknown data the exe extension
elsif Content_Type = Text_Plain then
return "txt";
else
declare
Position : Key_Value.Cursor := Ext_Set.First;
begin
while Key_Value.Has_Element (Position) loop
if Key_Value.Element (Position) = Content_Type then
return Key_Value.Key (Position);
end if;
Key_Value.Next (Position);
end loop;
end;
end if;
return "";
end Extension;
---------
-- Get --
---------
function Get (Filename : String; Default : String) return String is
Ext : constant String := Directories.Extension (Filename);
Cursor : Key_Value.Cursor;
begin
Cursor := Key_Value.Find (Ext_Set, Ext);
if Key_Value.Has_Element (Cursor) then
return Key_Value.Element (Cursor);
else
-- Check now in regexp list
declare
N : Node_Access := R_Table;
begin
while N /= null loop
if Regexp.Match (Filename, N.Item.Regexp) then
return To_String (N.Item.MIME_Type);
end if;
N := N.Next;
end loop;
end;
end if;
return Default;
end Get;
end Set;
begin
Initialize;
end AWS.MIME;
|