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 | ------------------------------------------------------------------------------
-- --
-- Matreshka Project --
-- --
-- Web Framework --
-- --
-- Runtime Library Component --
-- --
------------------------------------------------------------------------------
-- --
-- Copyright © 2014-2018, Vadim Godunko <vgodunko@gmail.com> --
-- 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. --
-- --
-- * Neither the name of the Vadim Godunko, IE nor the names of its --
-- contributors may 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 --
-- HOLDER 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. --
-- --
------------------------------------------------------------------------------
-- $Revision: 5896 $ $Date: 2018-12-06 14:27:38 +0300 (Чт, 06 дек 2018) $
------------------------------------------------------------------------------
with Ada.Synchronous_Task_Control;
with GNAT.Ctrl_C;
with AWS.Config.Set;
with AWS.Default;
with AWS.Net.WebSocket.Registry.Control;
with AWS.Response;
with AWS.Server.Log;
with AWS.Status;
with League.Holders;
with League.Settings;
with League.Strings;
with Matreshka.Servlet_AWS_Requests;
with Matreshka.Servlet_AWS_Responses;
with Matreshka.Servlet_Containers;
with Servlet.HTTP_Responses;
with Servlet.HTTP_Upgrade_Handlers;
with Web_Socket.Handlers.AWS_Handlers;
package body Matreshka.Servlet_Servers.AWS_Servers is
Config : AWS.Config.Object := AWS.Config.Get_Current;
-- Initialize config from .ini file
Server : AWS.Server.HTTP;
Shutdown_Request : Ada.Synchronous_Task_Control.Suspension_Object;
Container : Matreshka.Servlet_Containers.Servlet_Container_Access;
procedure Shutdown_Request_Handler;
-- Interrupt handler to process shutdown request from the operating system.
task Shutdown_Controller is
entry Start;
end Shutdown_Controller;
function Request_Callback
(Request : AWS.Status.Data) return AWS.Response.Data;
-- Handles request.
function WebSocket_Callback
(Socket : AWS.Net.Socket_Access;
Request : AWS.Status.Data) return AWS.Net.WebSocket.Object'Class;
-- Handles request of WebSocket connection.
procedure Read_Setting
(Config : in out AWS.Config.Object;
Settings : League.Settings.Settings;
Name : Wide_Wide_String;
Default : String);
-- Read setting with given Name or set Default if no such setting.
--------------
-- Finalize --
--------------
procedure Finalize (Self : not null access AWS_Server'Class) is
begin
Shutdown_Request_Handler;
end Finalize;
----------------
-- Initialize --
----------------
procedure Initialize (Self : not null access AWS_Server'Class) is
function "+"
(Text : Wide_Wide_String) return League.Strings.Universal_String
renames League.Strings.To_Universal_String;
Settings : League.Settings.Settings;
Holder : League.Holders.Holder;
begin
AWS.Config.Set.Reuse_Address (Config, True);
Read_Setting (Config, Settings, "max_post_parameters", "1_000_000");
-- Default number of POST parameters limited to 100, too small.
Read_Setting (Config, Settings, "upload_size_limit", "1_000_000_000");
Read_Setting (Config, Settings, "server_port", "8080");
Read_Setting (Config, Settings, "upload_directory", ".");
-- Upload_Directory is required to process files in POST parameters.
Read_Setting (Config, Settings, "log_file_directory", ".");
AWS.Server.Start (Server, Request_Callback'Access, Config);
AWS.Server.Log.Start (Server);
AWS.Server.Log.Start_Error (Server);
AWS.Net.WebSocket.Registry.Register_Pattern
("/.*", WebSocket_Callback'Access);
AWS.Net.WebSocket.Registry.Control.Start;
Shutdown_Controller.Start;
end Initialize;
------------------
-- Read_Setting --
------------------
procedure Read_Setting
(Config : in out AWS.Config.Object;
Settings : League.Settings.Settings;
Name : Wide_Wide_String;
Default : String)
is
use type League.Strings.Universal_String;
Holder : League.Holders.Holder;
Setting : constant League.Strings.Universal_String :=
League.Strings.To_Universal_String (Name);
Key : constant League.Strings.Universal_String := "/aws/" & Setting;
begin
if Settings.Contains (Key) then
Holder := Settings.Value (Key);
if League.Holders.Has_Tag
(Holder, League.Holders.Universal_Integer_Tag)
then
AWS.Config.Set.Parameter
(Config,
Setting.To_UTF_8_String,
League.Holders.Universal_Integer'Image
(League.Holders.Element (Holder)));
else
AWS.Config.Set.Parameter
(Config,
Setting.To_UTF_8_String,
League.Holders.Element (Holder).To_UTF_8_String);
end if;
else
AWS.Config.Set.Parameter (Config, Setting.To_UTF_8_String, Default);
end if;
end Read_Setting;
----------------------
-- Request_Callback --
----------------------
function Request_Callback
(Request : AWS.Status.Data) return AWS.Response.Data
is
Servlet_Request :
aliased Matreshka.Servlet_AWS_Requests.AWS_Servlet_Request;
Servlet_Response :
aliased Matreshka.Servlet_AWS_Responses.AWS_Servlet_Response;
begin
Matreshka.Servlet_AWS_Requests.Initialize (Servlet_Request, Request);
Matreshka.Servlet_AWS_Responses.Initialize
(Servlet_Response, Servlet_Request'Unchecked_Access);
Container.Dispatch
(Servlet_Request'Unchecked_Access, Servlet_Response'Unchecked_Access);
return Result : constant AWS.Response.Data := Servlet_Response.Build do
Servlet_Request.Finalize;
end return;
end Request_Callback;
-------------------
-- Set_Container --
-------------------
overriding procedure Set_Container
(Self : not null access AWS_Server;
Container : Matreshka.Servlet_Containers.Servlet_Container_Access) is
begin
AWS_Servers.Container := Container;
end Set_Container;
-------------------------
-- Shutdown_Controller --
-------------------------
task body Shutdown_Controller is
begin
select
accept Start;
Ada.Synchronous_Task_Control.Set_False (Shutdown_Request);
GNAT.Ctrl_C.Install_Handler (Shutdown_Request_Handler'Access);
or
terminate;
end select;
-- Wait till shutdown request was received.
Ada.Synchronous_Task_Control.Suspend_Until_True (Shutdown_Request);
-- Shutdown AWS server.
AWS.Server.Shutdown (Server);
end Shutdown_Controller;
------------------------------
-- Shutdown_Request_Handler --
------------------------------
procedure Shutdown_Request_Handler is
begin
Ada.Synchronous_Task_Control.Set_True (Shutdown_Request);
end Shutdown_Request_Handler;
------------------------
-- WebSocket_Callback --
------------------------
function WebSocket_Callback
(Socket : AWS.Net.Socket_Access;
Request : AWS.Status.Data) return AWS.Net.WebSocket.Object'Class
is
use type Servlet.HTTP_Responses.Status_Code;
use type Servlet.HTTP_Upgrade_Handlers.HTTP_Upgrade_Handler_Access;
Servlet_Request :
aliased Matreshka.Servlet_AWS_Requests.AWS_Servlet_Request;
Servlet_Response :
aliased Matreshka.Servlet_AWS_Responses.AWS_Servlet_Response;
begin
Matreshka.Servlet_AWS_Requests.Initialize (Servlet_Request, Request);
Matreshka.Servlet_AWS_Responses.Initialize
(Servlet_Response, Servlet_Request'Unchecked_Access);
Container.Dispatch
(Servlet_Request'Unchecked_Access, Servlet_Response'Unchecked_Access);
if Servlet_Response.Get_Status
= Servlet.HTTP_Responses.Switching_Protocols
and then Servlet_Request.Get_Upgrade_Handler /= null
then
Servlet_Request.Finalize;
return
Web_Socket.Handlers.AWS_Handlers.Create
(Socket,
Request,
Web_Socket.Handlers.AWS_Handlers.AWS_Web_Socket_Handler_Access
(Servlet_Request.Get_Upgrade_Handler));
else
Servlet_Request.Finalize;
raise Program_Error;
end if;
end WebSocket_Callback;
end Matreshka.Servlet_Servers.AWS_Servers;
|