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/*
* netsimplewifipage.cc - Implementation of the UI.Network.Wireless page
* horizon-qt5, the Qt 5 user interface for
* Project Horizon
*
* Copyright (c) 2019 Adélie Linux and contributors. All rights reserved.
* This code is licensed under the AGPL 3.0 license, as noted in the
* LICENSE-code file in the root directory of this repository.
*
* SPDX-License-Identifier: AGPL-3.0-only
*/
#include "netsimplewifipage.hh"
#include "netdhcppage.hh"
#include <assert.h>
#include <sstream>
#include <QVBoxLayout>
#ifdef HAS_INSTALL_ENV
int scanResults(wpactrl_t *control, char const *s, size_t len, void *page, tain_t *) {
NetworkSimpleWirelessPage *our_page = reinterpret_cast<NetworkSimpleWirelessPage *>(page);
return our_page->processScan(control, s, len);
}
#endif /* HAS_INSTALL_ENV */
NetworkSimpleWirelessPage::NetworkSimpleWirelessPage(QWidget *parent)
: HorizonWizardPage(parent), control(WPACTRL_ZERO) {
QVBoxLayout *layout;
loadWatermark("network");
setTitle(tr("Select Your Network"));
statusLabel = new QLabel(tr("Scanning for networks..."));
rescanButton = new QPushButton(tr("&Rescan Networks"));
connect(rescanButton, &QPushButton::clicked, [=](void) { doScan(); });
ssidListView = new QListWidget;
#ifdef HAS_INSTALL_ENV
exchange_item.filter = "CTRL-EVENT-SCAN-RESULTS";
exchange_item.cb = &scanResults;
notify = nullptr;
#endif /* HAS_INSTALL_ENV */
passphrase = new QLineEdit(this);
passphrase->setEchoMode(QLineEdit::Password);
passphrase->setPlaceholderText(tr("Passphrase"));
passphrase->hide();
layout = new QVBoxLayout;
layout->addWidget(statusLabel, 0, Qt::AlignCenter);
layout->addSpacing(10);
layout->addWidget(ssidListView, 0, Qt::AlignCenter);
layout->addWidget(rescanButton);
layout->addSpacing(10);
layout->addWidget(passphrase);
setLayout(layout);
}
NetworkSimpleWirelessPage::~NetworkSimpleWirelessPage() {
#ifdef HAS_INSTALL_ENV
wpactrl_end(&control);
#endif /* HAS_INSTALL_ENV */
}
void NetworkSimpleWirelessPage::scanDone(QString message) {
rescanButton->setEnabled(true);
statusLabel->setText(message);
}
void NetworkSimpleWirelessPage::doScan() {
#ifdef HAS_INSTALL_ENV
ssidListView->clear();
rescanButton->setEnabled(false);
statusLabel->setText(tr("Scanning for networks..."));
tain_t deadline;
wparesponse_t response;
std::string suppsock = "/var/run/wpa_supplicant/" +
horizonWizard()->chosen_auto_iface;
tain_now_g();
if(!wpactrl_start_g(&control, suppsock.c_str(), 2000)) {
rescanButton->setEnabled(false);
statusLabel->setText(tr("Couldn't communicate with wireless subsystem (Code %1)").arg(errno));
return;
}
response = wpactrl_command_g(&control, "SCAN");
if(response != WPA_OK && response != WPA_FAILBUSY) {
scanDone(tr("Couldn't scan for wireless networks (Code %1)").arg(response));
return;
}
tain_from_millisecs(&deadline, 15000);
tain_add_g(&deadline, &deadline);
wpactrl_xchg_init(&exchange, &exchange_item, 1, &deadline, this);
if(!wpactrl_xchg_start(&control, &exchange)) {
scanDone(tr("Failed to scan for wireless networks."));
return;
}
if(notify != nullptr) {
notify->setEnabled(false);
notify->deleteLater();
notify = nullptr;
}
notify = new QSocketNotifier(wpactrl_fd(&control), QSocketNotifier::Read, this);
connect(notify, &QSocketNotifier::activated, [=](int) {
QString status;
tain_now_g();
if(wpactrl_xchg_timeout_g(&control, &exchange)) {
status = tr("Network scan timed out.");
} else {
if(wpactrl_update(&control) < 0) {
status = tr("Issue communicating with wireless subsystem.");
} else {
int code = wpactrl_xchg_event_g(&control, &exchange);
if(code == -2) {
/* if the callback is what failed, we already set status */
status = statusLabel->text();
} else if(code < 0) {
/* non-callback failure */
status = tr("Issue processing scanned networks (Code %1)")
.arg(code);
} else if(code == 0) {
/* Not finished yet, so don't do anything. */
return;
} else {
status = tr("Scan successful.");
}
}
}
notify->setEnabled(false);
notify->deleteLater();
notify = nullptr;
statusLabel->setText(status);
rescanButton->setEnabled(true);
return;
});
notify->setEnabled(true);
#endif /* HAS_INSTALL_ENV */
}
void NetworkSimpleWirelessPage::initializePage() {
doScan();
}
bool NetworkSimpleWirelessPage::isComplete() const {
return (ssidListView->currentRow() != -1);
}
int NetworkSimpleWirelessPage::nextId() const {
return HorizonWizard::Page_Network_DHCP;
}
#ifdef HAS_INSTALL_ENV
int NetworkSimpleWirelessPage::processScan(wpactrl_t *c, const char *, size_t) {
assert(c == &control);
size_t bufsize = 32768;
char *buf = static_cast<char *>(malloc(bufsize));
ssize_t res_size;
errno = 0;
res_size = wpactrl_query_g(&control, "SCAN_RESULTS", buf, bufsize);
if(res_size == -1) {
if(errno == EMSGSIZE) {
statusLabel->setText(tr("Scan failed: Out of memory"));
free(buf);
return 0;
} else {
statusLabel->setText(tr("Scan failed (Code %1)").arg(errno));
free(buf);
return 0;
}
}
std::string raw_nets(buf, static_cast<std::string::size_type>(res_size));
std::istringstream net_streams(raw_nets);
/* discard the first line - it's a header */
net_streams.getline(buf, static_cast<std::streamsize>(bufsize));
/* process networks */
while(net_streams.getline(buf, static_cast<std::streamsize>(bufsize))) {
std::string net_line(buf);
std::string::size_type cur = 0, next = net_line.find_first_of('\t');
assert(next != std::string::npos);
std::string bssid(net_line.substr(cur, next));
cur = next + 1;
next = net_line.find_first_of('\t', cur);
assert(next != std::string::npos);
std::string freq(net_line.substr(cur, next));
cur = next + 1;
next = net_line.find_first_of('\t', cur);
assert(next != std::string::npos);
std::string signal(net_line.substr(cur, next));
cur = next + 1;
next = net_line.find_first_of('\t', cur);
assert(next != std::string::npos);
std::string flags(net_line.substr(cur, next));
cur = next + 1;
next = net_line.find_first_of('\t', cur);
assert(next == std::string::npos);
std::string ssid(net_line.substr(cur, next));
QIcon icon;
int strength = std::stoi(signal);
if(strength < -90) {
icon = QIcon::fromTheme("network-wireless-signal-none");
} else if(strength < -80) {
icon = QIcon::fromTheme("network-wireless-signal-weak");
} else if(strength < -67) {
icon = QIcon::fromTheme("network-wireless-signal-ok");
} else if(strength < -50) {
icon = QIcon::fromTheme("network-wireless-signal-good");
} else {
icon = QIcon::fromTheme("network-wireless-signal-excellent");
}
QListWidgetItem *network = new QListWidgetItem(ssidListView);
network->setText(QString::fromStdString(ssid));
network->setIcon(icon);
network->setToolTip(tr("Frequency: %1 MHz\nBSSID: %2\nRSSI: %3")
.arg(freq.c_str()).arg(bssid.c_str())
.arg(signal.c_str()));
}
return 1;
}
#endif /* HAS_INSTALL_ENV */
bool NetworkSimpleWirelessPage::validatePage() {
/* What a hack!
*
* Independent Pages means the DHCP page is never cleaned, even when Back
* is chosen. So, we have to do it from here. */
horizonWizard()->removePage(HorizonWizard::Page_Network_DHCP);
horizonWizard()->setPage(HorizonWizard::Page_Network_DHCP, new NetDHCPPage);
return true;
}
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