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
|
/*
* Remote Laboratory FPGA Viewer Part
*
* This program 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 3 of the License, or
* (at your option) any later version.
*
* This program 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 program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*
* (c) 2012 Timothy Pearson
* Raptor Engineering
* http://www.raptorengineeringinc.com
*/
#include "define.h"
#include "part.h"
#include <kaboutdata.h> //::createAboutData()
#include <kaction.h>
#include <klocale.h>
#include <kmessagebox.h> //::start()
#include <kparts/genericfactory.h>
#include <kstatusbar.h>
#include <kstdaction.h>
#include <tqfile.h> //encodeName()
#include <tqtimer.h> //postInit() hack
#include <tqvbox.h>
#include <tqsocket.h>
#include <tqmutex.h>
#include <tqeventloop.h>
#include <tqapplication.h>
#include <unistd.h> //access()
#include <stdint.h>
#include "tracewidget.h"
#include "floatspinbox.h"
#include "layout.h"
namespace RemoteLab {
typedef KParts::GenericFactory<RemoteLab::FPGAViewPart> Factory;
#define CLIENT_LIBRARY "libremotelab_fpgaviewer"
K_EXPORT_COMPONENT_FACTORY(libremotelab_fpgaviewer, RemoteLab::Factory)
FPGAViewPart::FPGAViewPart(TQWidget *parentWidget, const char *widgetName, TQObject *parent, const char *name, const TQStringList&)
: ReadOnlyPart( parent, name ), m_socket(0), m_base(0), connToServerConnecting(false), connToServerState(-1), connToServerTimeoutTimer(NULL)
{
// Initialize mutex
m_connectionMutex = new TQMutex(false);
// Initialize kpart
setInstance(Factory::instance());
setWidget(new TQVBox(parentWidget, widgetName));
// Create timers
m_updateTimer = new TQTimer(this);
// Create widgets
m_base = new FPGAViewBase(widget());
processLockouts();
TQTimer::singleShot(0, this, TQT_SLOT(postInit()));
}
FPGAViewPart::~FPGAViewPart() {
if (m_connectionMutex->locked()) {
printf("[WARNING] Exiting when data transfer still in progress!\n\r"); fflush(stdout);
}
disconnectFromServer();
delete m_connectionMutex;
}
void FPGAViewPart::processLockouts() {
TQWidget* mainWidget = widget();
if (mainWidget) {
if ((m_socket) && (m_socket->state() == TQSocket::Connected)) {
mainWidget->setEnabled(true);
}
else {
mainWidget->setEnabled(false);
}
}
}
void FPGAViewPart::connectionClosed() {
closeURL();
}
void FPGAViewPart::postInit() {
connect(m_updateTimer, SIGNAL(timeout()), this, SLOT(updateDisplay()));
}
bool FPGAViewPart::openURL(const KURL &url) {
int ret;
ret = connectToServer(url.url());
processLockouts();
return (ret != 0);
}
bool FPGAViewPart::closeURL() {
disconnectFromServer();
m_url = KURL();
return true;
}
void FPGAViewPart::disconnectFromServer() {
if (m_socket) {
m_socket->clearPendingData();
m_socket->close();
delete m_socket;
m_socket = NULL;
}
processLockouts();
}
void FPGAViewPart::finishConnectingToServer() {
if (connToServerConnecting) {
switch(connToServerState) {
case 0:
if (!connToServerTimeoutTimer) {
connToServerTimeoutTimer = new TQTimer;
connToServerTimeoutTimer->start(5000, TRUE);
}
if ((m_socket->state() == TQSocket::Connecting) || (m_socket->state() == TQSocket::HostLookup)) {
if (!connToServerTimeoutTimer->isActive()) {
connToServerState = -3;
connToServerConnecting = false;
disconnectFromServer();
KMessageBox::error(0, i18n("<qt>Unable to establish connection to remote server</qt>"), i18n("Connection Failed"));
}
}
else {
if (m_socket->state() == TQSocket::Connected) {
printf("[DEBUG] Initial connection established...\n\r"); fflush(stdout);
m_socket->setDataTimeout(5000);
m_socket->setUsingKerberos(true);
connToServerState = 1;
}
else {
connToServerState = -1;
connToServerConnecting = false;
disconnectFromServer();
KMessageBox::error(0, i18n("<qt>Unable to establish connection to remote server</qt>"), i18n("Connection Failed"));
}
}
break;
case 1:
if (m_socket->kerberosStatus() == TDEKerberosClientSocket::KerberosInitializing) {
// Do nothing
}
else {
if (m_socket->kerberosStatus() != TDEKerberosClientSocket::KerberosInUse) {
connToServerState = -1;
connToServerConnecting = false;
disconnectFromServer();
KMessageBox::error(0, i18n("<qt>Unable to establish Kerberos protocol with remote server<p>Please verify that you currently hold a valid Kerberos ticket</qt>"), i18n("Connection Failed"));
}
else {
connToServerState = 2;
}
}
break;
case 2:
// Connection established!
// Read magic number and proto version from server
TQDataStream ds(m_socket);
TQ_UINT32 magicnum;
TQ_UINT32 protover;
ds >> magicnum;
ds >> protover;
printf("[DEBUG] Got magic number %d and protocol version %d\n\r", magicnum, protover); fflush(stdout);
// Request connection to backend server
TQString response;
ds << TQString("SERV");
ds << TQString(CLIENT_LIBRARY);
ds >> response;
printf("[RAJA DEBUG 400.0] Got '%s' from the server\n\r", response.ascii()); fflush(stdout);
if (response == "OK") {
connToServerState = 3;
connToServerConnecting = false;
processLockouts();
return;
}
else if (response == "ERRNOCONN") {
connToServerState = -1;
connToServerConnecting = false;
disconnectFromServer();
KMessageBox::error(0, i18n("<qt>Unable to establish connection with backend server<p>Please verify that you are currently connected to a workspace</qt>"), i18n("Connection Failed"));
return;
}
else if (response == "ERRNOTAVL") {
connToServerState = -1;
connToServerConnecting = false;
disconnectFromServer();
KMessageBox::error(0, i18n("<qt>The backend server is not available at this time<p>Please try a different workspace, or try again later</qt>"), i18n("Connection Failed"));
return;
}
else if (response == "ERRNOSERV") {
connToServerState = -1;
connToServerConnecting = false;
disconnectFromServer();
KMessageBox::error(0, i18n("<qt>The active laboratory workspace does not support the requested service</qt>"), i18n("Service Unavailable"));
return;
}
else {
connToServerState = -1;
connToServerConnecting = false;
disconnectFromServer();
KMessageBox::error(0, i18n("<qt>Unable to establish connection with remote server</qt>"), i18n("Connection Failed"));
return;
}
break;
}
TQTimer::singleShot(0, this, SLOT(finishConnectingToServer()));
}
}
int FPGAViewPart::connectToServer(TQString server) {
if (m_socket) {
return -1;
}
if (!m_socket) {
m_socket = new TDEKerberosClientSocket(this);
}
m_socket->setServiceName("remotefpga");
m_socket->setServerFQDN(server);
m_socket->connectToHost(server, 4004);
// Finish connecting when appropriate
connToServerState = 0;
connToServerConnecting = true;
TQTimer::singleShot(0, this, SLOT(finishConnectingToServer()));
return 0;
}
void FPGAViewPart::updateDisplay() {
// RAJA FIXME
}
KAboutData* FPGAViewPart::createAboutData() {
return new KAboutData( APP_NAME, I18N_NOOP( APP_PRETTYNAME ), APP_VERSION );
}
} //namespace RemoteLab
#include "part.moc"
|
