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-ssidmenu.h"
  41
  42 DhcpcdQt::DhcpcdQt()
  43 {
  44
  45         createActions();
  46         createTrayIcon();
  47
  48         onLine = carrier = false;
  49         lastStatus = NULL;
  50         aniTimer = new QTimer(this);
  51         connect(aniTimer, SIGNAL(timeout()), this, SLOT(animate()));
  52         notifier = NULL;
  53         retryOpenTimer = NULL;
  54
  55         about = NULL;
  56         preferences = NULL;
  57
  58         wis = new QList<DhcpcdWi *>();
  59         ssidMenu = NULL;
  60
  61         qDebug("%s", "Connecting ...");
  62         con = dhcpcd_new();
  63         if (con == NULL) {
  64                 qCritical("libdhcpcd: %s", strerror(errno));
  65                 exit(EXIT_FAILURE);
  66                 return;
  67         }
  68         dhcpcd_set_status_callback(con, dhcpcd_status_cb, this);
  69         dhcpcd_set_if_callback(con, dhcpcd_if_cb, this);
  70         dhcpcd_wpa_set_scan_callback(con, dhcpcd_wpa_scan_cb, this);
  71         tryOpen();
  72
  73 }
  74
  75 DhcpcdQt::~DhcpcdQt()
  76 {
  77
  78         qDeleteAll(*wis);
  79         delete wis;
  80
  81         free(lastStatus);
  82
  83         if (con != NULL) {
  84                 dhcpcd_close(con);
  85                 dhcpcd_free(con);
  86         }
  87 }
  88
  89 void DhcpcdQt::animate()
  90 {
  91         const char *icon;
  92
  93         if (onLine) {
  94                 if (aniCounter++ > 6) {
  95                         aniTimer->stop();
  96                         aniCounter = 0;
  97                         return;
  98                 }
  99
 100                 if (aniCounter % 2 == 0)
 101                         icon = "network-idle";
 102                 else
 103                         icon = "network-transmit-receive";
 104         } else {
 105                 switch(aniCounter++) {
 106                 case 0:
 107                         icon = "network-transmit";
 108                         break;
 109                 case 1:
 110                         icon = "network-receive";
 111                         break;
 112                 default:
 113                         icon = "network-idle";
 114                         aniCounter = 0;
 115                 }
 116         }
 117
 118         setIcon("status", icon);
 119 }
 120
 121 void DhcpcdQt::updateOnline(bool showIf)
 122 {
 123         bool isOn, isCarrier;
 124         char *msg;
 125         DHCPCD_IF *ifs, *i;
 126         QString msgs;
 127
 128         isOn = isCarrier = false;
 129         ifs = dhcpcd_interfaces(con);
 130         for (i = ifs; i; i = i->next) {
 131                 if (strcmp(i->type, "link") == 0) {
 132                         if (i->up)
 133                                 isCarrier = true;
 134                 } else {
 135                         if (i->up)
 136                                 isOn = true;
 137                 }
 138                 msg = dhcpcd_if_message(i, NULL);
 139                 if (msg) {
 140                         if (showIf)
 141                                 qDebug() << msg;
 142                         if (msgs.isEmpty())
 143                                 msgs = QString::fromAscii(msg);
 144                         else
 145                                 msgs += '\n' + QString::fromAscii(msg);
 146                         free(msg);
 147                 } else if (showIf)
 148                         qDebug() << i->ifname << i->reason;
 149         }
 150
 151         if (onLine != isOn || carrier != isCarrier) {
 152                 onLine = isOn;
 153                 aniTimer->stop();
 154                 aniCounter = 0;
 155                 if (isOn) {
 156                         animate();
 157                         aniTimer->start(300);
 158                 } else if (isCarrier) {
 159                         animate();
 160                         aniTimer->start(500);
 161                 } else
 162                         setIcon("status", "network-offline");
 163         }
 164
 165         trayIcon->setToolTip(msgs);
 166 }
 167
 168 void DhcpcdQt::statusCallback(const char *status)
 169 {
 170
 171         qDebug("Status changed to %s", status);
 172         if (strcmp(status, "down") == 0) {
 173                 aniTimer->stop();
 174                 aniCounter = 0;
 175                 setIcon("status", "network-offline");
 176                 if (notifier) {
 177                         delete notifier;
 178                         notifier = NULL;
 179                 }
 180                 trayIcon->setToolTip(tr("Not connected to dhcpcd"));
 181         } else {
 182                 bool refresh;
 183
 184                 if ((lastStatus == NULL || strcmp(lastStatus, "down") == 0)) {
 185                         qDebug("Connected to dhcpcd-%s", dhcpcd_version(con));
 186                         refresh = true;
 187                 } else
 188                         refresh = false;
 189                 updateOnline(refresh);
 190         }
 191
 192         free(lastStatus);
 193         lastStatus = strdup(status);
 194
 195         if (strcmp(status, "down") == 0) {
 196                 if (retryOpenTimer == NULL) {
 197                         retryOpenTimer = new QTimer(this);
 198                         connect(retryOpenTimer, SIGNAL(timeout()),
 199                             this, SLOT(tryOpen()));
 200                         retryOpenTimer->start(DHCPCD_RETRYOPEN);
 201                 }
 202         }
 203 }
 204
 205 void DhcpcdQt::dhcpcd_status_cb(_unused DHCPCD_CONNECTION *con,
 206     const char *status, void *d)
 207 {
 208         DhcpcdQt *dhcpcdQt = (DhcpcdQt *)d;
 209
 210         dhcpcdQt->statusCallback(status);
 211 }
 212
 213 void DhcpcdQt::ifCallback(DHCPCD_IF *i)
 214 {
 215         char *msg;
 216         bool new_msg;
 217
 218         updateOnline(false);
 219
 220         if (strcmp(i->reason, "RENEW") == 0 ||
 221             strcmp(i->reason, "STOP") == 0 ||
 222             strcmp(i->reason, "STOPPED") == 0)
 223                 return;
 224
 225         msg = dhcpcd_if_message(i, &new_msg);
 226         if (msg) {
 227                 qDebug("%s", msg);
 228                 if (new_msg) {
 229                         QSystemTrayIcon::MessageIcon icon =
 230                             i->up ? QSystemTrayIcon::Information :
 231                             QSystemTrayIcon::Warning;
 232                         trayIcon->showMessage(tr("Network Event"), msg, icon);
 233                 }
 234                 free(msg);
 235         }
 236 }
 237
 238 void DhcpcdQt::dhcpcd_if_cb(DHCPCD_IF *i, void *d)
 239 {
 240         DhcpcdQt *dhcpcdQt = (DhcpcdQt *)d;
 241
 242         dhcpcdQt->ifCallback(i);
 243 }
 244
 245 DhcpcdWi *DhcpcdQt::findWi(DHCPCD_WPA *wpa)
 246 {
 247
 248         for (auto &wi : *wis) {
 249                 if (wi->getWpa() == wpa)
 250                         return wi;
 251         }
 252         return NULL;
 253 }
 254
 255 void DhcpcdQt::scanCallback(DHCPCD_WPA *wpa)
 256 {
 257         DHCPCD_WI_SCAN *scans, *s1, *s2;
 258         int fd = dhcpcd_wpa_get_fd(wpa);
 259         DhcpcdWi *wi;
 260
 261         wi = findWi(wpa);
 262         if (fd == -1) {
 263                 qCritical("No fd for WPA");
 264                 if (wi) {
 265                         wis->removeOne(wi);
 266                         delete wi;
 267                 }
 268                 return;
 269         }
 270
 271         DHCPCD_IF *i = dhcpcd_wpa_if(wpa);
 272         if (i == NULL) {
 273                 qCritical("No interface for WPA");
 274                 if (wi) {
 275                         wis->removeOne(wi);
 276                         delete wi;
 277                 }
 278                 return;
 279         }
 280
 281         qDebug("%s: Received scan results", i->ifname);
 282         scans = dhcpcd_wi_scans(i);
 283         if (wi == NULL) {
 284                 wi = new DhcpcdWi(this, wpa);
 285                 wis->append(wi);
 286         } else {
 287                 QString title = tr("New Access Point");
 288                 QString txt;
 289                 for (s1 = scans; s1; s1 = s1->next) {
 290                         for (s2 = wi->getScans(); s2; s2 = s2->next) {
 291                                 if (strcmp(s1->ssid, s2->ssid) == 0)
 292                                         break;
 293                                 if (s2 == NULL) {
 294                                         if (!txt.isEmpty()) {
 295                                                 title = tr("New Access Points");
 296                                                 txt += '\n';
 297                                         }
 298                                         txt += s1->ssid;
 299                                 }
 300                         }
 301                 }
 302                 if (!txt.isEmpty())
 303                         notify(title, txt);
 304         }
 305         wi->setScans(scans);
 306 }
 307
 308 void DhcpcdQt::dhcpcd_wpa_scan_cb(DHCPCD_WPA *wpa, void *d)
 309 {
 310         DhcpcdQt *dhcpcdQt = (DhcpcdQt *)d;
 311
 312         dhcpcdQt->scanCallback(wpa);
 313 }
 314
 315 void DhcpcdQt::tryOpen() {
 316         int fd = dhcpcd_open(con);
 317         static int last_error;
 318
 319         if (fd == -1) {
 320                 if (errno != last_error) {
 321                         last_error = errno;
 322                         qCritical("dhcpcd_open: %s", strerror(errno));
 323                 }
 324                 if (retryOpenTimer == NULL) {
 325                         retryOpenTimer = new QTimer(this);
 326                         connect(retryOpenTimer, SIGNAL(timeout()),
 327                             this, SLOT(tryOpen()));
 328                         retryOpenTimer->start(DHCPCD_RETRYOPEN);
 329                 }
 330                 return;
 331         }
 332
 333         if (retryOpenTimer) {
 334                 delete retryOpenTimer;
 335                 retryOpenTimer = NULL;
 336         }
 337
 338         notifier = new QSocketNotifier(fd, QSocketNotifier::Read);
 339         connect(notifier, SIGNAL(activated(int)), this, SLOT(dispatch()));
 340 }
 341
 342 void DhcpcdQt::dispatch() {
 343
 344         if (dhcpcd_get_fd(con) == -1) {
 345                 qWarning("dhcpcd connection lost");
 346                 return;
 347         }
 348
 349         dhcpcd_dispatch(con);
 350 }
 351
 352 void DhcpcdQt::notify(QString &title, QString &msg,
 353     QSystemTrayIcon::MessageIcon icon)
 354 {
 355
 356         qDebug("%s", qPrintable(msg));
 357         trayIcon->showMessage(title, msg, icon);
 358 }
 359
 360
 361 void DhcpcdQt::closeEvent(QCloseEvent *event)
 362 {
 363
 364         if (trayIcon->isVisible()) {
 365                 hide();
 366                 event->ignore();
 367         }
 368 }
 369
 370 QIcon DhcpcdQt::getIcon(QString category, QString name)
 371 {
 372         QIcon icon;
 373
 374         if (QIcon::hasThemeIcon(name))
 375                 icon = QIcon::fromTheme(name);
 376         else
 377                 icon = QIcon(ICONDIR "/hicolor/scalable/" + category + "/" + name + ".svg");
 378         return icon;
 379 }
 380
 381 void DhcpcdQt::setIcon(QString category, QString name)
 382 {
 383         QIcon icon = getIcon(category, name);
 384
 385         trayIcon->setIcon(icon);
 386 }
 387
 388 QIcon DhcpcdQt::icon()
 389 {
 390
 391         return getIcon("status", "network-transmit-receive");
 392 }
 393
 394 void DhcpcdQt::addSsidMenu(QMenu *&menu, DHCPCD_IF *ifp, DhcpcdWi *&wi)
 395 {
 396         DHCPCD_WI_SCAN *scan;
 397
 398         for (scan = wi->getScans(); scan; scan = scan->next) {
 399                 QWidgetAction *wa = new QWidgetAction(menu);
 400                 DhcpcdSsidMenu *ssidMenu = new DhcpcdSsidMenu(menu, ifp, scan);
 401                 wa->setDefaultWidget(ssidMenu);
 402                 menu->addAction(wa);
 403                 connect(ssidMenu, SIGNAL(selected(DHCPCD_IF *, DHCPCD_WI_SCAN *)),
 404                     this, SLOT(connectSsid(DHCPCD_IF *, DHCPCD_WI_SCAN *)));
 405         }
 406 }
 407
 408 void DhcpcdQt::connectSsid(DHCPCD_IF *, DHCPCD_WI_SCAN *)
 409 {
 410
 411         QMessageBox::information(this, "Not implemented",
 412             "SSID selection is not yet implemented");
 413 }
 414
 415 void DhcpcdQt::createSsidMenu()
 416 {
 417         DHCPCD_WPA *wpa;
 418         DHCPCD_IF *ifp;
 419
 420         if (ssidMenu) {
 421                 delete ssidMenu;
 422                 ssidMenu = NULL;
 423         }
 424         if (wis->size() == 0)
 425                 return;
 426
 427         ssidMenu = new QMenu(this);
 428         if (wis->size() == 1) {
 429                 DhcpcdWi *wi = wis->first();
 430                 wpa = wi->getWpa();
 431                 ifp = dhcpcd_wpa_if(wpa);
 432                 addSsidMenu(ssidMenu, ifp, wi);
 433         } else {
 434                 for (auto &wi : *wis) {
 435                         wpa = wi->getWpa();
 436                         ifp = dhcpcd_wpa_if(wpa);
 437                         if (ifp) {
 438                                 QMenu *ifmenu = ssidMenu->addMenu(ifp->ifname);
 439                                 addSsidMenu(ifmenu, ifp, wi);
 440                         }
 441                 }
 442         }
 443         ssidMenu->popup(QCursor::pos());
 444 }
 445
 446 void DhcpcdQt::iconActivated(QSystemTrayIcon::ActivationReason reason)
 447 {
 448
 449         if (reason == QSystemTrayIcon::Trigger)
 450                 createSsidMenu();
 451 }
 452
 453 void DhcpcdQt::dialogClosed(QDialog *dialog)
 454 {
 455
 456         if (dialog == about)
 457                 about = NULL;
 458         else if (dialog == preferences)
 459                 preferences = NULL;
 460 }
 461
 462 void DhcpcdQt::showPreferences()
 463 {
 464
 465         if (preferences == NULL) {
 466                 preferences = new DhcpcdPreferences(this);
 467                 preferences->show();
 468         } else
 469                 preferences->activateWindow();
 470 }
 471
 472 void DhcpcdQt::showAbout()
 473 {
 474
 475         if (about == NULL) {
 476                 about = new DhcpcdAbout(this);
 477                 about->show();
 478         } else
 479                 about->activateWindow();
 480 }
 481
 482 void DhcpcdQt::createActions()
 483 {
 484
 485         preferencesAction = new QAction(tr("&Preferences"), this);
 486         preferencesAction->setIcon(QIcon::fromTheme("preferences-system-network"));
 487         connect(preferencesAction, SIGNAL(triggered()),
 488             this, SLOT(showPreferences()));
 489
 490         aboutAction = new QAction(tr("&About"), this);
 491         aboutAction->setIcon(QIcon::fromTheme("help-about"));
 492         connect(aboutAction, SIGNAL(triggered()), this, SLOT(showAbout()));
 493
 494         quitAction = new QAction(tr("&Quit"), this);
 495         quitAction->setIcon(QIcon::fromTheme("application-exit"));
 496         connect(quitAction, SIGNAL(triggered()), qApp, SLOT(quit()));
 497
 498 }
 499
 500 void DhcpcdQt::createTrayIcon()
 501 {
 502
 503         trayIconMenu = new QMenu(this);
 504         trayIconMenu->addAction(preferencesAction);
 505         trayIconMenu->addSeparator();
 506         trayIconMenu->addAction(aboutAction);
 507         trayIconMenu->addAction(quitAction);
 508
 509         trayIcon = new QSystemTrayIcon(this);
 510         setIcon("status", "network-offline");
 511         trayIcon->setContextMenu(trayIconMenu);
 512
 513         connect(trayIcon, SIGNAL(activated(QSystemTrayIcon::ActivationReason)),
 514             this, SLOT(iconActivated(QSystemTrayIcon::ActivationReason)));
 515
 516         trayIcon->show();
 517 }