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-rw-r--r--src/wifi/qwifisupplicant.cpp444
1 files changed, 0 insertions, 444 deletions
diff --git a/src/wifi/qwifisupplicant.cpp b/src/wifi/qwifisupplicant.cpp
deleted file mode 100644
index d87ac80..0000000
--- a/src/wifi/qwifisupplicant.cpp
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-/****************************************************************************
-**
-** Copyright (C) 2014 Digia Plc
-** All rights reserved.
-** For any questions to Digia, please use the contact form at
-** http://www.qt.io
-**
-** This file is part of Qt Enterprise Embedded.
-**
-** Licensees holding valid Qt Enterprise licenses may use this file in
-** accordance with the Qt Enterprise License Agreement provided with the
-** Software or, alternatively, in accordance with the terms contained in
-** a written agreement between you and Digia.
-**
-** If you have questions regarding the use of this file, please use
-** the contact form at http://www.qt.io
-**
-****************************************************************************/
-#include "qwifisupplicant_p.h"
-#include "qwifidevice.h"
-#include "qwifimanager_p.h"
-
-#include <poll.h>
-#include <unistd.h>
-#include <sys/socket.h>
-
-#include <QtCore/QFile>
-#include <QtCore/QProcess>
-
-QT_BEGIN_NAMESPACE
-
-Q_LOGGING_CATEGORY(B2QT_WIFI_VERBOSE, "qt.b2qt.wifi.verbose")
-
-#define CONFIG_FILE "/etc/wpa_supplicant.qtwifi.conf"
-#define CONTROL_INTERFACE_PATH "/var/run/wpa_supplicant/"
-
-QWifiSupplicant::QWifiSupplicant(QObject *parent, QWifiManagerPrivate *managerPrivate) :
- QObject(parent),
- ctrl_conn(0),
- monitor_conn(0),
- interface(QWifiDevice::wifiInterfaceName()),
- m_managerPrivate(managerPrivate)
-{
- createSupplicantConfig();
-}
-
-void QWifiSupplicant::createSupplicantConfig() const
-{
- QFile supplicantConfig(QLatin1String(CONFIG_FILE));
- if (supplicantConfig.exists())
- return;
-
- if (supplicantConfig.open(QIODevice::WriteOnly)) {
- supplicantConfig.write("ctrl_interface=" CONTROL_INTERFACE_PATH "\n"
- "ctrl_interface_group=0\n"
- "update_config=1\n");
- } else {
- m_managerPrivate->updateLastError(QLatin1String("failed to create wpa_supplicant configuration file."));
- }
-}
-
-bool QWifiSupplicant::startSupplicant()
-{
- QString pidFile = QLatin1String("/var/run/wpa_supplicant." + interface + ".pid");
- QString driver(QStringLiteral("nl80211,wext"));
-
- QStringList arg;
- arg << QStringLiteral("--start") << QStringLiteral("--quiet") << QStringLiteral("--name");
- arg << QStringLiteral("wpa_supplicant") << QStringLiteral("--startas");
- arg << QStringLiteral("/usr/sbin/wpa_supplicant") << QStringLiteral("--pidfile") << pidFile;
- arg << QStringLiteral("--") << QStringLiteral("-B") << QStringLiteral("-P") << pidFile;
- arg << QStringLiteral("-i") << QLatin1String(interface) << QStringLiteral("-c");
- arg << QLatin1String(CONFIG_FILE) << QStringLiteral("-D") << driver;
-
- QProcess startStopDaemon;
- startStopDaemon.setProcessChannelMode(QProcess::MergedChannels);
- startStopDaemon.start(QStringLiteral("start-stop-daemon"), arg);
- if (!startStopDaemon.waitForStarted()) {
- m_managerPrivate->updateLastError(startStopDaemon.program() + QLatin1String(": ") + startStopDaemon.errorString());
- return false;
- }
- startStopDaemon.waitForFinished();
- // if the interface socket exists then wpa-supplicant was invoked successfully
- if (!QFile(QLatin1String(CONTROL_INTERFACE_PATH + interface)).exists()) {
- m_managerPrivate->updateLastError(QLatin1String("failed to invoke wpa_supplicant: "
- + startStopDaemon.readAll()));
- return false;
- }
- // reset sockets used for exiting from hung state
- exit_sockets[0] = exit_sockets[1] = -1;
- return true;
-}
-
-bool QWifiSupplicant::stopSupplicant()
-{
- QString pidFile = QLatin1String("/var/run/wpa_supplicant." + interface + ".pid");
-
- if (QFile(pidFile).exists()) {
- QStringList arg;
- arg << QStringLiteral("--stop") << QStringLiteral("--quiet") << QStringLiteral("--name");
- arg << QStringLiteral("wpa_supplicant") << QStringLiteral("--pidfile") << pidFile;
-
- QProcess startStopDaemon;
- startStopDaemon.start(QStringLiteral("start-stop-daemon"), arg);
- if (!startStopDaemon.waitForStarted()) {
- m_managerPrivate->updateLastError(startStopDaemon.program() + QLatin1String(": ") + startStopDaemon.errorString());
- return false;
- }
- startStopDaemon.waitForFinished();
- QByteArray error = startStopDaemon.readAllStandardError();
- if (!error.isEmpty()) {
- m_managerPrivate->updateLastError(QLatin1String("failed to stop a wpa_supplicant process" + error));
- return false;
- }
-
- QFile::remove(pidFile);
- }
-
- QFile::remove(QLatin1String(CONTROL_INTERFACE_PATH + interface));
-
- // workaround for QTEE-957
- QProcess killall;
- killall.start(QStringLiteral("killall"), QStringList() << QStringLiteral("-9") << QStringLiteral("wpa_supplicant"));
- killall.waitForFinished();
-
- return true;
-}
-
-/*! \internal
- *
- wpa_supplicant socket communication code (Apache License 2.0) with few modifications
- from https://android.googlesource.com/platform/hardware/libhardware_legacy/
-
- */
-bool QWifiSupplicant::connectToSupplicant()
-{
- static char path[4096];
- snprintf(path, sizeof(path), "%s/%s", CONTROL_INTERFACE_PATH, interface.constData());
- bool connected = true;
-
- ctrl_conn = wpa_ctrl_open(path);
- if (ctrl_conn == NULL) {
- qCWarning(B2QT_WIFI, "Unable to open connection to wpa_supplicant on \"%s\": %s",
- path, strerror(errno));
- connected = false;
- }
- monitor_conn = wpa_ctrl_open(path);
- if (monitor_conn == NULL) {
- wpa_ctrl_close(ctrl_conn);
- ctrl_conn = NULL;
- connected = false;
- }
- if (wpa_ctrl_attach(monitor_conn) != 0) {
- wpa_ctrl_close(monitor_conn);
- wpa_ctrl_close(ctrl_conn);
- ctrl_conn = monitor_conn = NULL;
- connected = false;
- }
-
- if (socketpair(AF_UNIX, SOCK_STREAM, 0, exit_sockets) == -1) {
- wpa_ctrl_close(monitor_conn);
- wpa_ctrl_close(ctrl_conn);
- ctrl_conn = monitor_conn = NULL;
- connected = false;
- }
-
- if (!connected)
- m_managerPrivate->updateLastError(QLatin1String("failed to connect to wpa_supplicant"));
- return connected;
-}
-
-void QWifiSupplicant::closeSupplicantConnection()
-{
- if (ctrl_conn != NULL) {
- wpa_ctrl_close(ctrl_conn);
- ctrl_conn = NULL;
- }
-
- if (monitor_conn != NULL) {
- wpa_ctrl_close(monitor_conn);
- monitor_conn = NULL;
- }
-
- if (exit_sockets[0] >= 0) {
- close(exit_sockets[0]);
- exit_sockets[0] = -1;
- }
-
- if (exit_sockets[1] >= 0) {
- close(exit_sockets[1]);
- exit_sockets[1] = -1;
- }
-}
-
-int QWifiSupplicant::waitForEvent(char *buf, size_t buflen)
-{
- size_t nread = buflen - 1;
- int result;
- char *match, *match2;
-
- if (monitor_conn == NULL)
- return snprintf(buf, buflen, WPA_EVENT_TERMINATING " - connection closed");
-
- result = receiveEvent(buf, &nread);
-
- // Terminate reception on exit socket
- if (result == -2)
- return snprintf(buf, buflen, WPA_EVENT_TERMINATING " - connection closed");
-
- if (result < 0) {
- qCWarning(B2QT_WIFI, "receiveEvent failed: %s", strerror(errno));
- return snprintf(buf, buflen, WPA_EVENT_TERMINATING " - recv error");
- }
-
- buf[nread] = '\0';
- // Check for EOF on the socket
- if (result == 0 && nread == 0) {
- // Fabricate an event to pass up
- qCWarning(B2QT_WIFI, "Received EOF on supplicant socket");
- return snprintf(buf, buflen, WPA_EVENT_TERMINATING " - signal 0 received");
- }
-
- /*
- * Events strings are in the format
- *
- * IFNAME=iface <N>CTRL-EVENT-XXX
- * or
- * <N>CTRL-EVENT-XXX
- *
- * where N is the message level in numerical form (0=VERBOSE, 1=DEBUG,
- * etc.) and XXX is the event name. The level information is not useful
- * to us, so strip it off.
- */
-
- if (strncmp(buf, "IFNAME=", (sizeof("IFNAME=") - 1)) == 0) {
- match = strchr(buf, ' ');
- if (match != NULL) {
- if (match[1] == '<') {
- match2 = strchr(match + 2, '>');
- if (match2 != NULL) {
- nread -= (match2 - match);
- memmove(match + 1, match2 + 1, nread - (match - buf) + 1);
- }
- }
- } else {
- return snprintf(buf, buflen, "%s", "CTRL-EVENT-IGNORE ");
- }
- } else if (buf[0] == '<') {
- match = strchr(buf, '>');
- if (match != NULL) {
- nread -= (match + 1 - buf);
- memmove(buf, match + 1, nread + 1);
- //qCWarning(B2QT_WIFI, "supplicant generated event without interface - %s", buf);
- }
- } else {
- // let the event go as is!
- qCWarning(B2QT_WIFI, "supplicant generated event without interface and without message level - %s", buf);
- }
-
- return nread;
-}
-
-bool QWifiSupplicant::sendCommand(const QString &command, QByteArray *reply)
-{
- QByteArray cmd = command.toLocal8Bit();
- qCDebug(B2QT_WIFI) << "[command]: " << cmd;
-
- if (ctrl_conn == NULL) {
- qCWarning(B2QT_WIFI, "Not connected to wpa_supplicant");
- return false;
- }
-
- char data[8192];
- size_t len = sizeof(data) - 1; // -1: room to add a 0-terminator
- int ret = wpa_ctrl_request(ctrl_conn, cmd, strlen(cmd), data, &len, NULL);
- if (ret == -2) {
- qCWarning(B2QT_WIFI) << "command timed out";
- // unblocks the monitor receive socket for termination
- TEMP_FAILURE_RETRY(write(exit_sockets[0], "T", 1));
- return false;
- } else if (ret < 0 || strncmp(data, "FAIL", 4) == 0) {
- return false;
- }
-
- if (len == sizeof(data) - 1) {
- qCWarning(B2QT_WIFI) << "possible buffer overflow detected";
- return false;
- }
-
- data[len] = 0;
- qCDebug(B2QT_WIFI_VERBOSE) << "[response]: " << data;
- *reply = QByteArray(data, len);
-
- return true;
-}
-
-int QWifiSupplicant::receiveEvent(char *reply, size_t *reply_len)
-{
- int res = 0;
- int ctrlfd = wpa_ctrl_get_fd(monitor_conn);
- struct pollfd rfds[2];
-
- memset(rfds, 0, 2 * sizeof(struct pollfd));
- rfds[0].fd = ctrlfd;
- rfds[0].events |= POLLIN;
- rfds[1].fd = exit_sockets[1];
- rfds[1].events |= POLLIN;
- res = TEMP_FAILURE_RETRY(poll(rfds, 2, -1));
- if (res < 0) {
- qCWarning(B2QT_WIFI, "Error poll = %d", res);
- return res;
- }
- if (rfds[0].revents & POLLIN) {
- return wpa_ctrl_recv(monitor_conn, reply, reply_len);
- }
-
- /* it is not rfds[0], then it must be rfts[1] (i.e. the exit socket)
- * or we timed out. In either case, this call has failed ..
- */
- return -2;
-}
-
-static inline int hex2num(char c)
-{
- if (c >= '0' && c <= '9')
- return c - '0';
- if (c >= 'a' && c <= 'f')
- return c - 'a' + 10;
- if (c >= 'A' && c <= 'F')
- return c - 'A' + 10;
- return -1;
-}
-
-static inline int hex2byte(const char *hex)
-{
- int a, b;
- a = hex2num(*hex++);
- if (a < 0)
- return -1;
- b = hex2num(*hex++);
- if (b < 0)
- return -1;
- return (a << 4) | b;
-}
-
-static inline int printf_decode(char *buf, int maxlen, const char *str)
-{
- const char *pos = str;
- int len = 0;
- int val;
-
- while (*pos) {
- if (len + 1 >= maxlen)
- break;
- switch (*pos) {
- case '\\':
- pos++;
- switch (*pos) {
- case '\\':
- buf[len++] = '\\';
- pos++;
- break;
- case '"':
- buf[len++] = '"';
- pos++;
- break;
- case 'n':
- buf[len++] = '\n';
- pos++;
- break;
- case 'r':
- buf[len++] = '\r';
- pos++;
- break;
- case 't':
- buf[len++] = '\t';
- pos++;
- break;
- case 'e':
- buf[len++] = '\033';
- pos++;
- break;
- case 'x':
- pos++;
- val = hex2byte(pos);
- if (val < 0) {
- val = hex2num(*pos);
- if (val < 0)
- break;
- buf[len++] = val;
- pos++;
- } else {
- buf[len++] = val;
- pos += 2;
- }
- break;
- case '0':
- case '1':
- case '2':
- case '3':
- case '4':
- case '5':
- case '6':
- case '7':
- val = *pos++ - '0';
- if (*pos >= '0' && *pos <= '7')
- val = val * 8 + (*pos++ - '0');
- if (*pos >= '0' && *pos <= '7')
- val = val * 8 + (*pos++ - '0');
- buf[len++] = val;
- break;
- default:
- break;
- }
- break;
- default:
- buf[len++] = *pos++;
- break;
- }
- }
- if (maxlen > len)
- buf[len] = '\0';
-
- return len;
-}
-
-/*! \internal
- *
- Decode wpa_supplicant encoded string, see file hostapd/src/utils/common.c
- in git://w1.fi/hostap.git repository.
-
- For Ascii encoded string, any octet < 32 or > 127 is encoded as a "\\x"
- followed by the hex representation of the octet. Exception chars are ",
- \\, \\e, \\n, \\r, \\t which are escaped by a backslash
-
- */
-QString QWifiSupplicant::decodeSsid(const QString &encoded)
-{
- static char ssid[2048];
- printf_decode(ssid, sizeof(ssid), encoded.toLatin1().constData());
- return QString::fromUtf8(ssid);
-}
-
-QT_END_NAMESPACE
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