roy.marples.name Git - dhcpcd-ui/blob - src/dhcpcd-qt/dhcpcd-qt.cpp

   1 /*
   2  * dhcpcd-qt
   3  * Copyright 2014 Roy Marples <roy@marples.name>
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions
   7  * are met:
   8  * 1. Redistributions of source code must retain the above copyright
   9  *    notice, this list of conditions and the following disclaimer.
  10  * 2. Redistributions in binary form must reproduce the above copyright
  11  *    notice, this list of conditions and the following disclaimer in the
  12  *    documentation and/or other materials provided with the distribution.
  13  *
  14  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
  15  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  16  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  17  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  18  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  19  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  20  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  21  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  22  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  23  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  24  * SUCH DAMAGE.
  25  */
  26
  27 #include <QCursor>
  28 #include <QDebug>
  29 #include <QList>
  30 #include <QSocketNotifier>
  31 #include <QtGui>
  32
  33 #include <cerrno>
  34
  35 #include "config.h"
  36 #include "dhcpcd-qt.h"
  37 #include "dhcpcd-about.h"
  38 #include "dhcpcd-preferences.h"
  39 #include "dhcpcd-wi.h"
  40 #include "dhcpcd-ifmenu.h"
  41 #include "dhcpcd-ssidmenu.h"
  42
  43 DhcpcdQt::DhcpcdQt()
  44 {
  45
  46         createActions();
  47         createTrayIcon();
  48
  49         onLine = carrier = false;
  50         lastStatus = NULL;
  51         aniTimer = new QTimer(this);
  52         connect(aniTimer, SIGNAL(timeout()), this, SLOT(animate()));
  53         notifier = NULL;
  54         retryOpenTimer = NULL;
  55
  56         about = NULL;
  57         preferences = NULL;
  58
  59         wis = new QList<DhcpcdWi *>();
  60         ssidMenu = NULL;
  61
  62         qDebug("%s", "Connecting ...");
  63         con = dhcpcd_new();
  64         if (con == NULL) {
  65                 qCritical("libdhcpcd: %s", strerror(errno));
  66                 exit(EXIT_FAILURE);
  67                 return;
  68         }
  69         dhcpcd_set_status_callback(con, dhcpcd_status_cb, this);
  70         dhcpcd_set_if_callback(con, dhcpcd_if_cb, this);
  71         dhcpcd_wpa_set_scan_callback(con, dhcpcd_wpa_scan_cb, this);
  72         tryOpen();
  73
  74 }
  75
  76 DhcpcdQt::~DhcpcdQt()
  77 {
  78
  79         qDeleteAll(*wis);
  80         delete wis;
  81
  82         if (con != NULL) {
  83                 dhcpcd_close(con);
  84                 dhcpcd_free(con);
  85         }
  86
  87         free(lastStatus);
  88 }
  89
  90 void DhcpcdQt::animate()
  91 {
  92         const char *icon;
  93
  94         if (onLine) {
  95                 if (aniCounter++ > 6) {
  96                         aniTimer->stop();
  97                         aniCounter = 0;
  98                         return;
  99                 }
 100
 101                 if (aniCounter % 2 == 0)
 102                         icon = "network-idle";
 103                 else
 104                         icon = "network-transmit-receive";
 105         } else {
 106                 switch(aniCounter++) {
 107                 case 0:
 108                         icon = "network-transmit";
 109                         break;
 110                 case 1:
 111                         icon = "network-receive";
 112                         break;
 113                 default:
 114                         icon = "network-idle";
 115                         aniCounter = 0;
 116                 }
 117         }
 118
 119         setIcon("status", icon);
 120 }
 121
 122 void DhcpcdQt::updateOnline(bool showIf)
 123 {
 124         bool isOn, isCarrier;
 125         char *msg;
 126         DHCPCD_IF *ifs, *i;
 127         QString msgs;
 128
 129         isOn = isCarrier = false;
 130         ifs = dhcpcd_interfaces(con);
 131         for (i = ifs; i; i = i->next) {
 132                 if (strcmp(i->type, "link") == 0) {
 133                         if (i->up)
 134                                 isCarrier = true;
 135                 } else {
 136                         if (i->up)
 137                                 isOn = true;
 138                 }
 139                 msg = dhcpcd_if_message(i, NULL);
 140                 if (msg) {
 141                         if (showIf)
 142                                 qDebug() << msg;
 143                         if (msgs.isEmpty())
 144                                 msgs = QString::fromAscii(msg);
 145                         else
 146                                 msgs += '\n' + QString::fromAscii(msg);
 147                         free(msg);
 148                 } else if (showIf)
 149                         qDebug() << i->ifname << i->reason;
 150         }
 151
 152         if (onLine != isOn || carrier != isCarrier) {
 153                 onLine = isOn;
 154                 aniTimer->stop();
 155                 aniCounter = 0;
 156                 if (isOn) {
 157                         animate();
 158                         aniTimer->start(300);
 159                 } else if (isCarrier) {
 160                         animate();
 161                         aniTimer->start(500);
 162                 } else
 163                         setIcon("status", "network-offline");
 164         }
 165
 166         trayIcon->setToolTip(msgs);
 167 }
 168
 169 void DhcpcdQt::statusCallback(const char *status)
 170 {
 171
 172         qDebug("Status changed to %s", status);
 173         if (strcmp(status, "down") == 0) {
 174                 aniTimer->stop();
 175                 aniCounter = 0;
 176                 setIcon("status", "network-offline");
 177                 if (notifier) {
 178                         delete notifier;
 179                         notifier = NULL;
 180                 }
 181                 trayIcon->setToolTip(tr("Not connected to dhcpcd"));
 182         } else {
 183                 bool refresh;
 184
 185                 if (lastStatus == NULL || strcmp(lastStatus, "down") == 0) {
 186                         qDebug("Connected to dhcpcd-%s", dhcpcd_version(con));
 187                         refresh = true;
 188                 } else
 189                         refresh = strcmp(lastStatus, "opened") ? false : true;
 190                 updateOnline(refresh);
 191         }
 192
 193         free(lastStatus);
 194         lastStatus = strdup(status);
 195
 196         if (strcmp(status, "down") == 0) {
 197                 if (retryOpenTimer == NULL) {
 198                         retryOpenTimer = new QTimer(this);
 199                         connect(retryOpenTimer, SIGNAL(timeout()),
 200                             this, SLOT(tryOpen()));
 201                         retryOpenTimer->start(DHCPCD_RETRYOPEN);
 202                 }
 203         }
 204 }
 205
 206 void DhcpcdQt::dhcpcd_status_cb(_unused DHCPCD_CONNECTION *con,
 207     const char *status, void *d)
 208 {
 209         DhcpcdQt *dhcpcdQt = (DhcpcdQt *)d;
 210
 211         dhcpcdQt->statusCallback(status);
 212 }
 213
 214 void DhcpcdQt::ifCallback(DHCPCD_IF *i)
 215 {
 216         char *msg;
 217         bool new_msg;
 218
 219         updateOnline(false);
 220
 221         if (strcmp(i->reason, "RENEW") == 0 ||
 222             strcmp(i->reason, "STOP") == 0 ||
 223             strcmp(i->reason, "STOPPED") == 0)
 224                 return;
 225
 226         msg = dhcpcd_if_message(i, &new_msg);
 227         if (msg) {
 228                 qDebug("%s", msg);
 229                 if (new_msg) {
 230                         QSystemTrayIcon::MessageIcon icon =
 231                             i->up ? QSystemTrayIcon::Information :
 232                             QSystemTrayIcon::Warning;
 233                         trayIcon->showMessage(tr("Network Event"), msg, icon);
 234                 }
 235                 free(msg);
 236         }
 237 }
 238
 239 void DhcpcdQt::dhcpcd_if_cb(DHCPCD_IF *i, void *d)
 240 {
 241         DhcpcdQt *dhcpcdQt = (DhcpcdQt *)d;
 242
 243         dhcpcdQt->ifCallback(i);
 244 }
 245
 246 DhcpcdWi *DhcpcdQt::findWi(DHCPCD_WPA *wpa)
 247 {
 248
 249         for (auto &wi : *wis) {
 250                 if (wi->getWpa() == wpa)
 251                         return wi;
 252         }
 253         return NULL;
 254 }
 255
 256 void DhcpcdQt::scanCallback(DHCPCD_WPA *wpa)
 257 {
 258         DHCPCD_WI_SCAN *scans, *s1, *s2;
 259         int fd = dhcpcd_wpa_get_fd(wpa);
 260         DhcpcdWi *wi;
 261
 262         wi = findWi(wpa);
 263         if (fd == -1) {
 264                 qCritical("No fd for WPA");
 265                 if (wi) {
 266                         wis->removeOne(wi);
 267                         delete wi;
 268                 }
 269                 return;
 270         }
 271
 272         DHCPCD_IF *i = dhcpcd_wpa_if(wpa);
 273         if (i == NULL) {
 274                 qCritical("No interface for WPA");
 275                 if (wi) {
 276                         wis->removeOne(wi);
 277                         delete wi;
 278                 }
 279                 return;
 280         }
 281
 282         qDebug("%s: Received scan results", i->ifname);
 283         scans = dhcpcd_wi_scans(i);
 284         if (wi == NULL) {
 285                 wi = new DhcpcdWi(this, wpa);
 286                 wis->append(wi);
 287         } else {
 288                 QString title = tr("New Access Point");
 289                 QString txt;
 290                 for (s1 = scans; s1; s1 = s1->next) {
 291                         for (s2 = wi->getScans(); s2; s2 = s2->next) {
 292                                 if (strcmp(s1->ssid, s2->ssid) == 0)
 293                                         break;
 294                         }
 295                         if (s2 == NULL) {
 296                                 if (!txt.isEmpty()) {
 297                                         title = tr("New Access Points");
 298                                         txt += '\n';
 299                                 }
 300                                 txt += s1->ssid;
 301                         }
 302                 }
 303                 if (!txt.isEmpty())
 304                         notify(title, txt);
 305         }
 306
 307         wi->setScans(scans);
 308 }
 309
 310 void DhcpcdQt::dhcpcd_wpa_scan_cb(DHCPCD_WPA *wpa, void *d)
 311 {
 312         DhcpcdQt *dhcpcdQt = (DhcpcdQt *)d;
 313
 314         dhcpcdQt->scanCallback(wpa);
 315 }
 316
 317 void DhcpcdQt::tryOpen() {
 318         int fd = dhcpcd_open(con);
 319         static int last_error;
 320
 321         if (fd == -1) {
 322                 if (errno != last_error) {
 323                         last_error = errno;
 324                         qCritical("dhcpcd_open: %s", strerror(errno));
 325                 }
 326                 if (retryOpenTimer == NULL) {
 327                         retryOpenTimer = new QTimer(this);
 328                         connect(retryOpenTimer, SIGNAL(timeout()),
 329                             this, SLOT(tryOpen()));
 330                         retryOpenTimer->start(DHCPCD_RETRYOPEN);
 331                 }
 332                 return;
 333         }
 334
 335         /* Start listening to WPA events */
 336         dhcpcd_wpa_start(con);
 337
 338         if (retryOpenTimer) {
 339                 delete retryOpenTimer;
 340                 retryOpenTimer = NULL;
 341         }
 342
 343         notifier = new QSocketNotifier(fd, QSocketNotifier::Read);
 344         connect(notifier, SIGNAL(activated(int)), this, SLOT(dispatch()));
 345 }
 346
 347 void DhcpcdQt::dispatch() {
 348
 349         if (dhcpcd_get_fd(con) == -1) {
 350                 qWarning("dhcpcd connection lost");
 351                 return;
 352         }
 353
 354         dhcpcd_dispatch(con);
 355 }
 356
 357 void DhcpcdQt::notify(QString &title, QString &msg,
 358     QSystemTrayIcon::MessageIcon icon)
 359 {
 360
 361         qDebug("%s", qPrintable(msg));
 362         trayIcon->showMessage(title, msg, icon);
 363 }
 364
 365
 366 void DhcpcdQt::closeEvent(QCloseEvent *event)
 367 {
 368
 369         if (trayIcon->isVisible()) {
 370                 hide();
 371                 event->ignore();
 372         }
 373 }
 374
 375 QIcon DhcpcdQt::getIcon(QString category, QString name)
 376 {
 377         QIcon icon;
 378
 379         if (QIcon::hasThemeIcon(name))
 380                 icon = QIcon::fromTheme(name);
 381         else
 382                 icon = QIcon(ICONDIR "/hicolor/scalable/" + category + "/" + name + ".svg");
 383         return icon;
 384 }
 385
 386 void DhcpcdQt::setIcon(QString category, QString name)
 387 {
 388         QIcon icon = getIcon(category, name);
 389
 390         trayIcon->setIcon(icon);
 391 }
 392
 393 QIcon DhcpcdQt::icon()
 394 {
 395
 396         return getIcon("status", "network-transmit-receive");
 397 }
 398
 399 void DhcpcdQt::createSsidMenu()
 400 {
 401
 402         if (ssidMenu) {
 403                 delete ssidMenu;
 404                 ssidMenu = NULL;
 405         }
 406         if (wis->size() == 0)
 407                 return;
 408
 409         ssidMenu = new QMenu(this);
 410         if (wis->size() == 1)
 411                 wis->first()->createMenu(ssidMenu);
 412         else {
 413                 for (auto &wi : *wis)
 414                         ssidMenu->addMenu(wi->createIfMenu(ssidMenu));
 415         }
 416         ssidMenu->popup(QCursor::pos());
 417 }
 418
 419 void DhcpcdQt::iconActivated(QSystemTrayIcon::ActivationReason reason)
 420 {
 421
 422         if (reason == QSystemTrayIcon::Trigger)
 423                 createSsidMenu();
 424 }
 425
 426 void DhcpcdQt::dialogClosed(QDialog *dialog)
 427 {
 428
 429         if (dialog == about)
 430                 about = NULL;
 431         else if (dialog == preferences)
 432                 preferences = NULL;
 433 }
 434
 435 void DhcpcdQt::showPreferences()
 436 {
 437
 438         if (preferences == NULL) {
 439                 preferences = new DhcpcdPreferences(this);
 440                 preferences->show();
 441         } else
 442                 preferences->activateWindow();
 443 }
 444
 445 void DhcpcdQt::showAbout()
 446 {
 447
 448         if (about == NULL) {
 449                 about = new DhcpcdAbout(this);
 450                 about->show();
 451         } else
 452                 about->activateWindow();
 453 }
 454
 455 void DhcpcdQt::createActions()
 456 {
 457
 458         preferencesAction = new QAction(tr("&Preferences"), this);
 459         preferencesAction->setIcon(QIcon::fromTheme("preferences-system-network"));
 460         connect(preferencesAction, SIGNAL(triggered()),
 461             this, SLOT(showPreferences()));
 462
 463         aboutAction = new QAction(tr("&About"), this);
 464         aboutAction->setIcon(QIcon::fromTheme("help-about"));
 465         connect(aboutAction, SIGNAL(triggered()), this, SLOT(showAbout()));
 466
 467         quitAction = new QAction(tr("&Quit"), this);
 468         quitAction->setIcon(QIcon::fromTheme("application-exit"));
 469         connect(quitAction, SIGNAL(triggered()), qApp, SLOT(quit()));
 470
 471 }
 472
 473 void DhcpcdQt::createTrayIcon()
 474 {
 475
 476         trayIconMenu = new QMenu(this);
 477         trayIconMenu->addAction(preferencesAction);
 478         trayIconMenu->addSeparator();
 479         trayIconMenu->addAction(aboutAction);
 480         trayIconMenu->addAction(quitAction);
 481
 482         trayIcon = new QSystemTrayIcon(this);
 483         setIcon("status", "network-offline");
 484         trayIcon->setContextMenu(trayIconMenu);
 485
 486         connect(trayIcon, SIGNAL(activated(QSystemTrayIcon::ActivationReason)),
 487             this, SLOT(iconActivated(QSystemTrayIcon::ActivationReason)));
 488
 489         trayIcon->show();
 490 }