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

   1 /*
   2  * dhcpcd-qt
   3  * Copyright 2014-2015 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 = DHC_UNKNOWN;
  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         if (ssidMenu) {
  85                 ssidMenu->setVisible(false);
  86                 ssidMenu->deleteLater();
  87         }
  88
  89         if (con != NULL) {
  90                 dhcpcd_close(con);
  91                 dhcpcd_free(con);
  92         }
  93
  94         for (auto &wi : *wis)
  95                 wi->deleteLater();
  96         delete wis;
  97 }
  98
  99 DHCPCD_CONNECTION *DhcpcdQt::getConnection()
 100 {
 101
 102         return con;
 103 }
 104
 105 QList<DhcpcdWi *> *DhcpcdQt::getWis()
 106 {
 107
 108         return wis;
 109 }
 110
 111 const char * DhcpcdQt::signalStrengthIcon(DHCPCD_WI_SCAN *scan)
 112 {
 113
 114         if (scan == NULL)
 115                 return "network-wireless-connected-00";
 116         if (scan->strength.value > 80)
 117                 return "network-wireless-connected-100";
 118         if (scan->strength.value > 55)
 119                 return "network-wireless-connected-75";
 120         if (scan->strength.value > 30)
 121                 return "network-wireless-connected-50";
 122         if (scan->strength.value > 5)
 123                 return "network-wireless-connected-25";
 124         return "network-wireless-connected-00";
 125 }
 126
 127 DHCPCD_WI_SCAN * DhcpcdQt::getStrongestSignal()
 128 {
 129         DHCPCD_WI_SCAN *scan, *scans, *s;
 130         DHCPCD_WPA *wpa;
 131         DHCPCD_IF *i;
 132
 133         scan = NULL;
 134         for (auto &wi : *wis) {
 135                 wpa = wi->getWpa();
 136                 i = dhcpcd_wpa_if(wpa);
 137                 scans = wi->getScans();
 138                 for (s = scans; s; s = s->next) {
 139                         if (dhcpcd_wi_associated(i, s) &&
 140                             (scan == NULL ||
 141                             s->strength.value > scan->strength.value))
 142                                 scan = s;
 143                 }
 144         }
 145         return scan;
 146 }
 147
 148 void DhcpcdQt::animate()
 149 {
 150         const char *icon;
 151         DHCPCD_WI_SCAN *scan;
 152
 153         scan = getStrongestSignal();
 154
 155         if (onLine) {
 156                 if (aniCounter++ > 6) {
 157                         aniTimer->stop();
 158                         aniCounter = 0;
 159                         return;
 160                 }
 161
 162                 if (aniCounter % 2 == 0)
 163                         icon = scan ? "network-wireless-connected-00" :
 164                             "network-idle";
 165                 else
 166                         icon = scan ? DhcpcdQt::signalStrengthIcon(scan) :
 167                             "network-transmit-receive";
 168         } else {
 169                 if (scan) {
 170                         switch(aniCounter++) {
 171                         case 0:
 172                                 icon = "network-wireless-connected-00";
 173                                 break;
 174                         case 1:
 175                                 icon = "network-wireless-connected-25";
 176                                 break;
 177                         case 2:
 178                                 icon = "network-wireless-connected-50";
 179                                 break;
 180                         case 3:
 181                                 icon = "network-wireless-connected-75";
 182                                 break;
 183                         default:
 184                                 icon = "network-wireless-connected-100";
 185                                 aniCounter = 0;
 186                         }
 187                 } else {
 188                         switch(aniCounter++) {
 189                         case 0:
 190                                 icon = "network-transmit";
 191                                 break;
 192                         case 1:
 193                                 icon = "network-receive";
 194                                 break;
 195                         default:
 196                                 icon = "network-idle";
 197                                 aniCounter = 0;
 198                         }
 199                 }
 200         }
 201
 202         setIcon("status", icon);
 203 }
 204
 205 void DhcpcdQt::updateOnline(bool showIf)
 206 {
 207         bool isOn, isCarrier;
 208         char *msg;
 209         DHCPCD_IF *ifs, *i;
 210         QString msgs;
 211
 212         isOn = isCarrier = false;
 213         ifs = dhcpcd_interfaces(con);
 214         for (i = ifs; i; i = i->next) {
 215                 if (i->type == DHT_LINK) {
 216                         if (i->up)
 217                                 isCarrier = true;
 218                 } else {
 219                         if (i->up)
 220                                 isOn = true;
 221                 }
 222                 msg = dhcpcd_if_message(i, NULL);
 223                 if (msg) {
 224                         if (showIf)
 225                                 qDebug() << msg;
 226                         if (msgs.isEmpty())
 227                                 msgs = QString::fromLatin1(msg);
 228                         else
 229                                 msgs += '\n' + QString::fromLatin1(msg);
 230                         free(msg);
 231                 } else if (showIf)
 232                         qDebug() << i->ifname << i->reason;
 233         }
 234
 235         if (onLine != isOn || carrier != isCarrier) {
 236                 onLine = isOn;
 237                 carrier = isCarrier;
 238                 aniTimer->stop();
 239                 aniCounter = 0;
 240                 if (isOn) {
 241                         animate();
 242                         aniTimer->start(300);
 243                 } else if (isCarrier) {
 244                         animate();
 245                         aniTimer->start(500);
 246                 } else
 247                         setIcon("status", "network-offline");
 248         }
 249
 250         trayIcon->setToolTip(msgs);
 251 }
 252
 253 void DhcpcdQt::statusCallback(unsigned int status, const char *status_msg)
 254 {
 255
 256         qDebug("Status changed to %s", status_msg);
 257         if (status == DHC_DOWN) {
 258                 aniTimer->stop();
 259                 aniCounter = 0;
 260                 onLine = carrier = false;
 261                 setIcon("status", "network-offline");
 262                 trayIcon->setToolTip(tr("Not connected to dhcpcd"));
 263                 /* Close down everything */
 264                 if (notifier) {
 265                         notifier->setEnabled(false);
 266                         notifier->deleteLater();
 267                         notifier = NULL;
 268                 }
 269                 if (ssidMenu) {
 270                         ssidMenu->deleteLater();
 271                         ssidMenu = NULL;
 272                 }
 273                 preferencesAction->setEnabled(false);
 274                 if (preferences) {
 275                         preferences->deleteLater();
 276                         preferences = NULL;
 277                 }
 278         } else {
 279                 bool refresh;
 280
 281                 if (lastStatus == DHC_UNKNOWN || lastStatus == DHC_DOWN) {
 282                         qDebug("Connected to dhcpcd-%s", dhcpcd_version(con));
 283                         refresh = true;
 284                 } else
 285                         refresh = lastStatus == DHC_OPENED ? true : false;
 286                 updateOnline(refresh);
 287         }
 288
 289         lastStatus = status;
 290
 291         if (status == DHC_DOWN) {
 292                 if (retryOpenTimer == NULL) {
 293                         retryOpenTimer = new QTimer(this);
 294                         connect(retryOpenTimer, SIGNAL(timeout()),
 295                             this, SLOT(tryOpen()));
 296                         retryOpenTimer->start(DHCPCD_RETRYOPEN);
 297                 }
 298         }
 299 }
 300
 301 void DhcpcdQt::dhcpcd_status_cb(_unused DHCPCD_CONNECTION *con,
 302     unsigned int status, const char *status_msg, void *d)
 303 {
 304         DhcpcdQt *dhcpcdQt = (DhcpcdQt *)d;
 305
 306         dhcpcdQt->statusCallback(status, status_msg);
 307 }
 308
 309 void DhcpcdQt::ifCallback(DHCPCD_IF *i)
 310 {
 311         char *msg;
 312         bool new_msg;
 313
 314         if (i->state == DHS_RENEW ||
 315             i->state == DHS_STOP || i->state == DHS_STOPPED)
 316         {
 317                 msg = dhcpcd_if_message(i, &new_msg);
 318                 if (msg) {
 319                         qDebug("%s", msg);
 320                         if (new_msg) {
 321                                 QSystemTrayIcon::MessageIcon icon =
 322                                     i->up ? QSystemTrayIcon::Information :
 323                                     QSystemTrayIcon::Warning;
 324                                 QString t = tr("Network Event");
 325                                 QString m = msg;
 326                                 notify(t, m, icon);
 327                         }
 328                         free(msg);
 329                 }
 330         }
 331
 332         updateOnline(false);
 333
 334         if (i->wireless) {
 335                 for (auto &wi : *wis) {
 336                         DHCPCD_WPA *wpa = wi->getWpa();
 337                         if (dhcpcd_wpa_if(wpa) == i) {
 338                                 DHCPCD_WI_SCAN *scans;
 339
 340                                 scans = dhcpcd_wi_scans(i);
 341                                 processScans(wi, scans);
 342                         }
 343                 }
 344         }
 345 }
 346
 347 void DhcpcdQt::dhcpcd_if_cb(DHCPCD_IF *i, void *d)
 348 {
 349         DhcpcdQt *dhcpcdQt = (DhcpcdQt *)d;
 350
 351         dhcpcdQt->ifCallback(i);
 352 }
 353
 354 DhcpcdWi *DhcpcdQt::findWi(DHCPCD_WPA *wpa)
 355 {
 356
 357         for (auto &wi : *wis) {
 358                 if (wi->getWpa() == wpa)
 359                         return wi;
 360         }
 361         return NULL;
 362 }
 363
 364 void DhcpcdQt::processScans(DhcpcdWi *wi, DHCPCD_WI_SCAN *scans)
 365 {
 366         DHCPCD_WI_SCAN *s1, *s2;
 367
 368         QString title = tr("New Access Point");
 369         QString txt;
 370         for (s1 = scans; s1; s1 = s1->next) {
 371                 for (s2 = wi->getScans(); s2; s2 = s2->next) {
 372                         if (strcmp(s1->ssid, s2->ssid) == 0)
 373                                 break;
 374                 }
 375                 if (s2 == NULL) {
 376                         if (!txt.isEmpty()) {
 377                                 title = tr("New Access Points");
 378                                 txt += '\n';
 379                         }
 380                         txt += s1->ssid;
 381                 }
 382         }
 383         if (!txt.isEmpty() &&
 384             (ssidMenu == NULL || !ssidMenu->isVisible()))
 385                 notify(title, txt);
 386
 387         if (wi->setScans(scans) && ssidMenu && ssidMenu->isVisible())
 388                 ssidMenu->popup(ssidMenuPos);
 389 }
 390
 391 void DhcpcdQt::scanCallback(DHCPCD_WPA *wpa)
 392 {
 393         DHCPCD_WI_SCAN *scans;
 394         int fd = dhcpcd_wpa_get_fd(wpa);
 395         DhcpcdWi *wi;
 396
 397         wi = findWi(wpa);
 398         if (fd == -1) {
 399                 qCritical("No fd for WPA");
 400                 if (wi) {
 401                         wis->removeOne(wi);
 402                         wi->close();
 403                         wi->deleteLater();
 404                 }
 405                 return;
 406         }
 407
 408         DHCPCD_IF *i = dhcpcd_wpa_if(wpa);
 409         if (i == NULL) {
 410                 qCritical("No interface for WPA");
 411                 if (wi) {
 412                         wis->removeOne(wi);
 413                         wi->close();
 414                         wi->deleteLater();
 415                 }
 416                 return;
 417         }
 418
 419         qDebug("%s: Received scan results", i->ifname);
 420         scans = dhcpcd_wi_scans(i);
 421         if (wi == NULL) {
 422                 wi = new DhcpcdWi(this, wpa);
 423                 if (wi->open()) {
 424                         wis->append(wi);
 425                         wi->setScans(scans);
 426                 } else {
 427                         wi->close();
 428                         wi->deleteLater();
 429                 }
 430         } else
 431                 processScans(wi, scans);
 432
 433         if (!aniTimer->isActive()) {
 434                 DHCPCD_WI_SCAN *scan;
 435                 const char *icon;
 436
 437                 scan = getStrongestSignal();
 438                 if (scan)
 439                         icon = DhcpcdQt::signalStrengthIcon(scan);
 440                 else if (onLine)
 441                         icon = "network-transmit-receive";
 442                 else
 443                         icon = "network-offline";
 444
 445                 setIcon("status", icon);
 446         }
 447 }
 448
 449 void DhcpcdQt::dhcpcd_wpa_scan_cb(DHCPCD_WPA *wpa, void *d)
 450 {
 451         DhcpcdQt *dhcpcdQt = (DhcpcdQt *)d;
 452
 453         dhcpcdQt->scanCallback(wpa);
 454 }
 455
 456 void DhcpcdQt::wpaStatusCallback(DHCPCD_WPA *wpa,
 457     unsigned int status, const char *status_msg)
 458 {
 459         DHCPCD_IF *i;
 460
 461         i = dhcpcd_wpa_if(wpa);
 462         qDebug("%s: WPA status %s", i->ifname, status_msg);
 463         if (status == DHC_DOWN) {
 464                 DhcpcdWi *wi = findWi(wpa);
 465                 if (wi) {
 466                         wis->removeOne(wi);
 467                         wi->close();
 468                         wi->deleteLater();
 469                 }
 470         }
 471 }
 472
 473 void DhcpcdQt::dhcpcd_wpa_status_cb(DHCPCD_WPA *wpa,
 474     unsigned int status, const char *status_msg, void *d)
 475 {
 476         DhcpcdQt *dhcpcdQt = (DhcpcdQt *)d;
 477
 478         dhcpcdQt->wpaStatusCallback(wpa, status, status_msg);
 479 }
 480
 481 void DhcpcdQt::tryOpen() {
 482         int fd = dhcpcd_open(con, true);
 483         static int last_error;
 484
 485         if (fd == -1) {
 486                 if (errno == EACCES || errno == EPERM) {
 487                         if ((fd = dhcpcd_open(con, false)) != -1)
 488                                 goto unprived;
 489                 }
 490                 if (errno != last_error) {
 491                         last_error = errno;
 492                         const char *errt = strerror(errno);
 493                         qCritical("dhcpcd_open: %s", errt);
 494                         trayIcon->setToolTip(
 495                             tr("Error connecting to dhcpcd: %1").arg(errt));
 496                 }
 497                 if (retryOpenTimer == NULL) {
 498                         retryOpenTimer = new QTimer(this);
 499                         connect(retryOpenTimer, SIGNAL(timeout()),
 500                             this, SLOT(tryOpen()));
 501                         retryOpenTimer->start(DHCPCD_RETRYOPEN);
 502                 }
 503                 return;
 504         }
 505
 506 unprived:
 507         /* Start listening to WPA events */
 508         dhcpcd_wpa_start(con);
 509
 510         if (retryOpenTimer) {
 511                 retryOpenTimer->stop();
 512                 retryOpenTimer->deleteLater();
 513                 retryOpenTimer = NULL;
 514         }
 515
 516         notifier = new QSocketNotifier(fd, QSocketNotifier::Read);
 517         connect(notifier, SIGNAL(activated(int)), this, SLOT(dispatch()));
 518
 519         preferencesAction->setEnabled(dhcpcd_privileged(con));
 520 }
 521
 522 void DhcpcdQt::dispatch()
 523 {
 524
 525         dhcpcd_dispatch(con);
 526 }
 527
 528 void DhcpcdQt::notify(QString &title, QString &msg,
 529 #ifdef NOTIFY
 530     QSystemTrayIcon::MessageIcon
 531 #else
 532     QSystemTrayIcon::MessageIcon icon
 533 #endif
 534     )
 535 {
 536
 537 #ifdef NOTIFY
 538         KNotification *n = new KNotification("event", this);
 539         n->setTitle(title);
 540         n->setText(msg);
 541         n->sendEvent();
 542 #else
 543         Q_UNUSED(title);
 544         Q_UNUSED(msg);
 545         Q_UNUSED(icon);
 546         //trayIcon->showMessage(title, msg, icon);
 547 #endif
 548 }
 549
 550 void DhcpcdQt::closeEvent(QCloseEvent *event)
 551 {
 552
 553         if (trayIcon->isVisible()) {
 554                 hide();
 555                 event->ignore();
 556         }
 557 }
 558
 559 QIcon DhcpcdQt::getIcon(QString category, QString name)
 560 {
 561         QIcon icon;
 562
 563         if (QIcon::hasThemeIcon(name))
 564                 icon = QIcon::fromTheme(name);
 565         else
 566                 icon = QIcon(ICONDIR "/hicolor/scalable/" + category + "/" + name + ".svg");
 567
 568         return icon;
 569 }
 570
 571 void DhcpcdQt::setIcon(QString category, QString name)
 572 {
 573         QIcon icon = getIcon(category, name);
 574
 575         trayIcon->setIcon(icon);
 576 }
 577
 578 QIcon DhcpcdQt::icon()
 579 {
 580
 581         return getIcon("status", "network-transmit-receive");
 582 }
 583
 584 void DhcpcdQt::menuDeleted(QMenu *menu)
 585 {
 586
 587         if (ssidMenu == menu)
 588                 ssidMenu = NULL;
 589 }
 590
 591 void DhcpcdQt::createSsidMenu()
 592 {
 593
 594         if (ssidMenu) {
 595                 ssidMenu->deleteLater();
 596                 ssidMenu = NULL;
 597         }
 598         if (wis->size() == 0)
 599                 return;
 600
 601         ssidMenu = new QMenu(this);
 602         if (wis->size() == 1)
 603                 wis->first()->createMenu(ssidMenu);
 604         else {
 605                 for (auto &wi : *wis)
 606                         ssidMenu->addMenu(wi->createIfMenu(ssidMenu));
 607         }
 608         ssidMenuPos = QCursor::pos();
 609         ssidMenu->popup(ssidMenuPos);
 610 }
 611
 612 void DhcpcdQt::iconActivated(QSystemTrayIcon::ActivationReason reason)
 613 {
 614
 615         if (reason == QSystemTrayIcon::Trigger)
 616                 createSsidMenu();
 617 }
 618
 619 void DhcpcdQt::dialogClosed(QDialog *dialog)
 620 {
 621
 622         if (dialog == about)
 623                 about = NULL;
 624         else if (dialog == preferences)
 625                 preferences = NULL;
 626 }
 627
 628 void DhcpcdQt::showPreferences()
 629 {
 630
 631         if (preferences == NULL) {
 632                 preferences = new DhcpcdPreferences(this);
 633                 preferences->show();
 634         } else
 635                 preferences->activateWindow();
 636 }
 637
 638 void DhcpcdQt::showAbout()
 639 {
 640
 641         if (about == NULL) {
 642                 about = new DhcpcdAbout(this);
 643                 about->show();
 644         } else
 645                 about->activateWindow();
 646 }
 647
 648 void DhcpcdQt::createActions()
 649 {
 650
 651         preferencesAction = new QAction(tr("&Preferences"), this);
 652         preferencesAction->setIcon(QIcon::fromTheme("preferences-system-network"));
 653         preferencesAction->setEnabled(false);
 654         connect(preferencesAction, SIGNAL(triggered()),
 655             this, SLOT(showPreferences()));
 656
 657         aboutAction = new QAction(tr("&About"), this);
 658         aboutAction->setIcon(QIcon::fromTheme("help-about"));
 659         connect(aboutAction, SIGNAL(triggered()), this, SLOT(showAbout()));
 660
 661         quitAction = new QAction(tr("&Quit"), this);
 662         quitAction->setIcon(QIcon::fromTheme("application-exit"));
 663         connect(quitAction, SIGNAL(triggered()), qApp, SLOT(quit()));
 664
 665 }
 666
 667 void DhcpcdQt::createTrayIcon()
 668 {
 669
 670         trayIconMenu = new QMenu(this);
 671         trayIconMenu->addAction(preferencesAction);
 672         trayIconMenu->addSeparator();
 673         trayIconMenu->addAction(aboutAction);
 674         trayIconMenu->addAction(quitAction);
 675
 676         trayIcon = new QSystemTrayIcon(this);
 677         setIcon("status", "network-offline");
 678         trayIcon->setContextMenu(trayIconMenu);
 679
 680         connect(trayIcon, SIGNAL(activated(QSystemTrayIcon::ActivationReason)),
 681             this, SLOT(iconActivated(QSystemTrayIcon::ActivationReason)));
 682
 683         trayIcon->show();
 684 }