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 #ifdef NOTIFY
  44 #include <knotification.h>
  45 #endif
  46
  47 DhcpcdQt::DhcpcdQt()
  48 {
  49
  50         createActions();
  51         createTrayIcon();
  52
  53         onLine = carrier = false;
  54         lastStatus = NULL;
  55         aniTimer = new QTimer(this);
  56         connect(aniTimer, SIGNAL(timeout()), this, SLOT(animate()));
  57         notifier = NULL;
  58         retryOpenTimer = NULL;
  59
  60         about = NULL;
  61         preferences = NULL;
  62
  63         wis = new QList<DhcpcdWi *>();
  64         ssidMenu = NULL;
  65
  66         qDebug("%s", "Connecting ...");
  67         con = dhcpcd_new();
  68         if (con == NULL) {
  69                 qCritical("libdhcpcd: %s", strerror(errno));
  70                 exit(EXIT_FAILURE);
  71                 return;
  72         }
  73         dhcpcd_set_progname(con, "dhcpcd-qt");
  74         dhcpcd_set_status_callback(con, dhcpcd_status_cb, this);
  75         dhcpcd_set_if_callback(con, dhcpcd_if_cb, this);
  76         dhcpcd_wpa_set_scan_callback(con, dhcpcd_wpa_scan_cb, this);
  77         dhcpcd_wpa_set_status_callback(con, dhcpcd_wpa_status_cb, this);
  78         tryOpen();
  79 }
  80
  81 DhcpcdQt::~DhcpcdQt()
  82 {
  83
  84         /* This will have already been destroyed,
  85          * but the reference may not be. */
  86         ssidMenu = NULL;
  87
  88         if (con != NULL) {
  89                 dhcpcd_close(con);
  90                 dhcpcd_free(con);
  91         }
  92
  93         free(lastStatus);
  94
  95         qDeleteAll(*wis);
  96         delete wis;
  97
  98 }
  99
 100 DHCPCD_CONNECTION *DhcpcdQt::getConnection()
 101 {
 102
 103         return con;
 104 }
 105
 106 QList<DhcpcdWi *> *DhcpcdQt::getWis()
 107 {
 108
 109         return wis;
 110 }
 111
 112 void DhcpcdQt::animate()
 113 {
 114         const char *icon;
 115
 116         if (onLine) {
 117                 if (aniCounter++ > 6) {
 118                         aniTimer->stop();
 119                         aniCounter = 0;
 120                         return;
 121                 }
 122
 123                 if (aniCounter % 2 == 0)
 124                         icon = "network-idle";
 125                 else
 126                         icon = "network-transmit-receive";
 127         } else {
 128                 switch(aniCounter++) {
 129                 case 0:
 130                         icon = "network-transmit";
 131                         break;
 132                 case 1:
 133                         icon = "network-receive";
 134                         break;
 135                 default:
 136                         icon = "network-idle";
 137                         aniCounter = 0;
 138                 }
 139         }
 140
 141         setIcon("status", icon);
 142 }
 143
 144 void DhcpcdQt::updateOnline(bool showIf)
 145 {
 146         bool isOn, isCarrier;
 147         char *msg;
 148         DHCPCD_IF *ifs, *i;
 149         QString msgs;
 150
 151         isOn = isCarrier = false;
 152         ifs = dhcpcd_interfaces(con);
 153         for (i = ifs; i; i = i->next) {
 154                 if (strcmp(i->type, "link") == 0) {
 155                         if (i->up)
 156                                 isCarrier = true;
 157                 } else {
 158                         if (i->up)
 159                                 isOn = true;
 160                 }
 161                 msg = dhcpcd_if_message(i, NULL);
 162                 if (msg) {
 163                         if (showIf)
 164                                 qDebug() << msg;
 165                         if (msgs.isEmpty())
 166                                 msgs = QString::fromAscii(msg);
 167                         else
 168                                 msgs += '\n' + QString::fromAscii(msg);
 169                         free(msg);
 170                 } else if (showIf)
 171                         qDebug() << i->ifname << i->reason;
 172         }
 173
 174         if (onLine != isOn || carrier != isCarrier) {
 175                 onLine = isOn;
 176                 carrier = isCarrier;
 177                 aniTimer->stop();
 178                 aniCounter = 0;
 179                 if (isOn) {
 180                         animate();
 181                         aniTimer->start(300);
 182                 } else if (isCarrier) {
 183                         animate();
 184                         aniTimer->start(500);
 185                 } else
 186                         setIcon("status", "network-offline");
 187         }
 188
 189         trayIcon->setToolTip(msgs);
 190 }
 191
 192 void DhcpcdQt::statusCallback(const char *status)
 193 {
 194
 195         qDebug("Status changed to %s", status);
 196         if (strcmp(status, "down") == 0) {
 197                 aniTimer->stop();
 198                 aniCounter = 0;
 199                 onLine = carrier = false;
 200                 setIcon("status", "network-offline");
 201                 trayIcon->setToolTip(tr("Not connected to dhcpcd"));
 202                 /* Close down everything */
 203                 if (notifier) {
 204                         delete notifier;
 205                         notifier = NULL;
 206                 }
 207                 if (ssidMenu) {
 208                         delete ssidMenu;
 209                         ssidMenu = NULL;
 210                 }
 211                 if (preferences) {
 212                         delete preferences;
 213                         preferences = NULL;
 214                 }
 215                 preferencesAction->setEnabled(false);
 216         } else {
 217                 bool refresh;
 218
 219                 if (lastStatus == NULL || strcmp(lastStatus, "down") == 0) {
 220                         qDebug("Connected to dhcpcd-%s", dhcpcd_version(con));
 221                         refresh = true;
 222                 } else
 223                         refresh = strcmp(lastStatus, "opened") ? false : true;
 224                 updateOnline(refresh);
 225         }
 226
 227         free(lastStatus);
 228         lastStatus = strdup(status);
 229
 230         if (strcmp(status, "down") == 0) {
 231                 if (retryOpenTimer == NULL) {
 232                         retryOpenTimer = new QTimer(this);
 233                         connect(retryOpenTimer, SIGNAL(timeout()),
 234                             this, SLOT(tryOpen()));
 235                         retryOpenTimer->start(DHCPCD_RETRYOPEN);
 236                 }
 237         }
 238 }
 239
 240 void DhcpcdQt::dhcpcd_status_cb(_unused DHCPCD_CONNECTION *con,
 241     const char *status, void *d)
 242 {
 243         DhcpcdQt *dhcpcdQt = (DhcpcdQt *)d;
 244
 245         dhcpcdQt->statusCallback(status);
 246 }
 247
 248 void DhcpcdQt::ifCallback(DHCPCD_IF *i)
 249 {
 250         char *msg;
 251         bool new_msg;
 252
 253         if (strcmp(i->reason, "RENEW") &&
 254             strcmp(i->reason, "STOP") &&
 255             strcmp(i->reason, "STOPPED"))
 256         {
 257                 msg = dhcpcd_if_message(i, &new_msg);
 258                 if (msg) {
 259                         qDebug("%s", msg);
 260                         if (new_msg) {
 261                                 QSystemTrayIcon::MessageIcon icon =
 262                                     i->up ? QSystemTrayIcon::Information :
 263                                     QSystemTrayIcon::Warning;
 264                                 QString t = tr("Network Event");
 265                                 QString m = msg;
 266                                 notify(t, m, icon);
 267                         }
 268                         free(msg);
 269                 }
 270         }
 271
 272         updateOnline(false);
 273 }
 274
 275 void DhcpcdQt::dhcpcd_if_cb(DHCPCD_IF *i, void *d)
 276 {
 277         DhcpcdQt *dhcpcdQt = (DhcpcdQt *)d;
 278
 279         dhcpcdQt->ifCallback(i);
 280 }
 281
 282 DhcpcdWi *DhcpcdQt::findWi(DHCPCD_WPA *wpa)
 283 {
 284
 285         for (auto &wi : *wis) {
 286                 if (wi->getWpa() == wpa)
 287                         return wi;
 288         }
 289         return NULL;
 290 }
 291
 292 void DhcpcdQt::scanCallback(DHCPCD_WPA *wpa)
 293 {
 294         DHCPCD_WI_SCAN *scans, *s1, *s2;
 295         int fd = dhcpcd_wpa_get_fd(wpa);
 296         DhcpcdWi *wi;
 297
 298         wi = findWi(wpa);
 299         if (fd == -1) {
 300                 qCritical("No fd for WPA");
 301                 if (wi) {
 302                         wis->removeOne(wi);
 303                         delete wi;
 304                 }
 305                 return;
 306         }
 307
 308         DHCPCD_IF *i = dhcpcd_wpa_if(wpa);
 309         if (i == NULL) {
 310                 qCritical("No interface for WPA");
 311                 if (wi) {
 312                         wis->removeOne(wi);
 313                         delete wi;
 314                 }
 315                 return;
 316         }
 317
 318         qDebug("%s: Received scan results", i->ifname);
 319         scans = dhcpcd_wi_scans(i);
 320         if (wi == NULL) {
 321                 wi = new DhcpcdWi(this, wpa);
 322                 wis->append(wi);
 323         } else {
 324                 QString title = tr("New Access Point");
 325                 QString txt;
 326                 for (s1 = scans; s1; s1 = s1->next) {
 327                         for (s2 = wi->getScans(); s2; s2 = s2->next) {
 328                                 if (strcmp(s1->ssid, s2->ssid) == 0)
 329                                         break;
 330                         }
 331                         if (s2 == NULL) {
 332                                 if (!txt.isEmpty()) {
 333                                         title = tr("New Access Points");
 334                                         txt += '\n';
 335                                 }
 336                                 txt += s1->ssid;
 337                         }
 338                 }
 339                 if (!txt.isEmpty() &&
 340                     (ssidMenu == NULL || !ssidMenu->isVisible()))
 341                 {
 342                         qDebug("%s", qPrintable(txt));
 343                         notify(title, txt);
 344                 }
 345         }
 346
 347         if (wi->setScans(scans) && ssidMenu->isVisible())
 348                 ssidMenu->popup(ssidMenuPos);
 349 }
 350
 351 void DhcpcdQt::dhcpcd_wpa_scan_cb(DHCPCD_WPA *wpa, void *d)
 352 {
 353         DhcpcdQt *dhcpcdQt = (DhcpcdQt *)d;
 354
 355         dhcpcdQt->scanCallback(wpa);
 356 }
 357
 358 void DhcpcdQt::wpaStatusCallback(DHCPCD_WPA *wpa, const char *status)
 359 {
 360         DHCPCD_IF *i;
 361
 362         i = dhcpcd_wpa_if(wpa);
 363         qDebug("%s: WPA status %s", i->ifname, status);
 364         if (strcmp(status, "down") == 0) {
 365                 DhcpcdWi *wi = findWi(wpa);
 366                 if (wi) {
 367                         wis->removeOne(wi);
 368                         delete wi;
 369                 }
 370         }
 371 }
 372
 373 void DhcpcdQt::dhcpcd_wpa_status_cb(DHCPCD_WPA *wpa, const char *status,
 374     void *d)
 375 {
 376         DhcpcdQt *dhcpcdQt = (DhcpcdQt *)d;
 377
 378         dhcpcdQt->wpaStatusCallback(wpa, status);
 379 }
 380
 381 void DhcpcdQt::tryOpen() {
 382         int fd = dhcpcd_open(con, true);
 383         static int last_error;
 384
 385         if (fd == -1) {
 386                 if (errno == EACCES || errno == EPERM) {
 387                         if ((fd = dhcpcd_open(con, false)) != -1)
 388                                 goto unprived;
 389                 }
 390                 if (errno != last_error) {
 391                         last_error = errno;
 392                         const char *errt = strerror(errno);
 393                         qCritical("dhcpcd_open: %s", errt);
 394                         trayIcon->setToolTip(
 395                             tr("Error connecting to dhcpcd: %1").arg(errt));
 396                 }
 397                 if (retryOpenTimer == NULL) {
 398                         retryOpenTimer = new QTimer(this);
 399                         connect(retryOpenTimer, SIGNAL(timeout()),
 400                             this, SLOT(tryOpen()));
 401                         retryOpenTimer->start(DHCPCD_RETRYOPEN);
 402                 }
 403                 return;
 404         }
 405
 406 unprived:
 407         /* Start listening to WPA events */
 408         dhcpcd_wpa_start(con);
 409
 410         if (retryOpenTimer) {
 411                 delete retryOpenTimer;
 412                 retryOpenTimer = NULL;
 413         }
 414
 415         notifier = new QSocketNotifier(fd, QSocketNotifier::Read);
 416         connect(notifier, SIGNAL(activated(int)), this, SLOT(dispatch()));
 417
 418         preferencesAction->setEnabled(dhcpcd_privileged(con));
 419 }
 420
 421 void DhcpcdQt::dispatch() {
 422
 423         if (dhcpcd_get_fd(con) == -1) {
 424                 qWarning("dhcpcd connection lost");
 425                 return;
 426         }
 427
 428         dhcpcd_dispatch(con);
 429 }
 430
 431 void DhcpcdQt::notify(QString &title, QString &msg,
 432 #ifdef NOTIFY
 433     QSystemTrayIcon::MessageIcon
 434 #else
 435     QSystemTrayIcon::MessageIcon icon
 436 #endif
 437     )
 438 {
 439
 440 #ifdef NOTIFY
 441         KNotification *n = new KNotification("event", this);
 442         n->setTitle(title);
 443         n->setText(msg);
 444         n->sendEvent();
 445 #else
 446         trayIcon->showMessage(title, msg, icon);
 447 #endif
 448 }
 449
 450
 451 void DhcpcdQt::closeEvent(QCloseEvent *event)
 452 {
 453
 454         if (trayIcon->isVisible()) {
 455                 hide();
 456                 event->ignore();
 457         }
 458 }
 459
 460 QIcon DhcpcdQt::getIcon(QString category, QString name)
 461 {
 462         QIcon icon;
 463
 464         if (QIcon::hasThemeIcon(name))
 465                 icon = QIcon::fromTheme(name);
 466         else
 467                 icon = QIcon(ICONDIR "/hicolor/scalable/" + category + "/" + name + ".svg");
 468         return icon;
 469 }
 470
 471 void DhcpcdQt::setIcon(QString category, QString name)
 472 {
 473         QIcon icon = getIcon(category, name);
 474
 475         trayIcon->setIcon(icon);
 476 }
 477
 478 QIcon DhcpcdQt::icon()
 479 {
 480
 481         return getIcon("status", "network-transmit-receive");
 482 }
 483
 484 void DhcpcdQt::createSsidMenu()
 485 {
 486
 487         if (ssidMenu) {
 488                 delete ssidMenu;
 489                 ssidMenu = NULL;
 490         }
 491         if (wis->size() == 0)
 492                 return;
 493
 494         ssidMenu = new QMenu(this);
 495         if (wis->size() == 1)
 496                 wis->first()->createMenu(ssidMenu);
 497         else {
 498                 for (auto &wi : *wis)
 499                         ssidMenu->addMenu(wi->createIfMenu(ssidMenu));
 500         }
 501         ssidMenuPos = QCursor::pos();
 502         ssidMenu->popup(ssidMenuPos);
 503 }
 504
 505 void DhcpcdQt::iconActivated(QSystemTrayIcon::ActivationReason reason)
 506 {
 507
 508         if (reason == QSystemTrayIcon::Trigger)
 509                 createSsidMenu();
 510 }
 511
 512 void DhcpcdQt::dialogClosed(QDialog *dialog)
 513 {
 514
 515         if (dialog == about)
 516                 about = NULL;
 517         else if (dialog == preferences)
 518                 preferences = NULL;
 519 }
 520
 521 void DhcpcdQt::showPreferences()
 522 {
 523
 524         if (preferences == NULL) {
 525                 preferences = new DhcpcdPreferences(this);
 526                 preferences->show();
 527         } else
 528                 preferences->activateWindow();
 529 }
 530
 531 void DhcpcdQt::showAbout()
 532 {
 533
 534         if (about == NULL) {
 535                 about = new DhcpcdAbout(this);
 536                 about->show();
 537         } else
 538                 about->activateWindow();
 539 }
 540
 541 void DhcpcdQt::createActions()
 542 {
 543
 544         preferencesAction = new QAction(tr("&Preferences"), this);
 545         preferencesAction->setIcon(QIcon::fromTheme("preferences-system-network"));
 546         preferencesAction->setEnabled(false);
 547         connect(preferencesAction, SIGNAL(triggered()),
 548             this, SLOT(showPreferences()));
 549
 550         aboutAction = new QAction(tr("&About"), this);
 551         aboutAction->setIcon(QIcon::fromTheme("help-about"));
 552         connect(aboutAction, SIGNAL(triggered()), this, SLOT(showAbout()));
 553
 554         quitAction = new QAction(tr("&Quit"), this);
 555         quitAction->setIcon(QIcon::fromTheme("application-exit"));
 556         connect(quitAction, SIGNAL(triggered()), qApp, SLOT(quit()));
 557
 558 }
 559
 560 void DhcpcdQt::createTrayIcon()
 561 {
 562
 563         trayIconMenu = new QMenu(this);
 564         trayIconMenu->addAction(preferencesAction);
 565         trayIconMenu->addSeparator();
 566         trayIconMenu->addAction(aboutAction);
 567         trayIconMenu->addAction(quitAction);
 568
 569         trayIcon = new QSystemTrayIcon(this);
 570         setIcon("status", "network-offline");
 571         trayIcon->setContextMenu(trayIconMenu);
 572
 573         connect(trayIcon, SIGNAL(activated(QSystemTrayIcon::ActivationReason)),
 574             this, SLOT(iconActivated(QSystemTrayIcon::ActivationReason)));
 575
 576         trayIcon->show();
 577 }