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/*
* Copyright (C) 2023, KylinSoft Co., Ltd.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 3, or (at your option)
* any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, see <http://www.gnu.org/licenses/>.
*
**/
#include "usbthread.h"
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <ctype.h>
#include <sys/un.h>
#include <sys/ioctl.h>
#include <sys/socket.h>
#include <linux/types.h>
#include <linux/netlink.h>
#include <errno.h>
#include <unistd.h>
#include <regex>
#include <iostream>
#include <QDebug>
#include <QThread>
#include <QProcess>
#define UEVENT_BUFFER_SIZE 2048
UsbThread::UsbThread()
{
}
UsbThread::~UsbThread()
{
}
void UsbThread::run()
{
int hotplug_sock = init_sock();
while(1) {
char buf[UEVENT_BUFFER_SIZE*2] = {0};
// recv 会等待usb信号连入
recv(hotplug_sock, &buf, sizeof(buf), 0);
usbDeviceIdentify(QString(buf));
}
}
void UsbThread::usbDeviceIdentify(const QString &str)
{
if ( str.indexOf("bind") == 0
&& str.contains("pci")
&& !str.right( str.size() -1 - str.lastIndexOf('/') ).contains(":")
&& !str.right( str.size() -1 - str.lastIndexOf('/') ).contains(".")) {
QString path = QString("/sys") + str.right(str.size() - 1 - str.indexOf('@'));
QString deviceType = getDeivceTypeFromPath(path);
if (deviceType == "07")
emit addsignal();
}
// unbind@/devices/pci0000:00/0000:00:11.0/0000:02:01.0/usb1/1-1
if ( str.contains("unbind")
&& str.contains("pci")
&& !str.right( str.size() -1 - str.lastIndexOf('/') ).contains(":")
&& !str.right( str.size() -1 - str.lastIndexOf('/') ).contains(".")) {
emit removesignal();
}
return;
}
int UsbThread::init_sock()
{
struct sockaddr_nl snl;
const int buffersize = 16 * 1024 * 1024;
int retval;
memset(&snl, 0x00, sizeof(struct sockaddr_nl));
snl.nl_family = AF_NETLINK;
snl.nl_pid = getpid();
snl.nl_groups = 1;
int hotplug_sock = socket(PF_NETLINK, SOCK_DGRAM, NETLINK_KOBJECT_UEVENT);
if (hotplug_sock == -1)
{
printf("error getting socket: %s", strerror(errno));
return -1;
}
/* set receive buffersize */
setsockopt(hotplug_sock, SOL_SOCKET, SO_RCVBUFFORCE, &buffersize, sizeof(buffersize));
retval = bind(hotplug_sock, (struct sockaddr *) &snl, sizeof(struct sockaddr_nl));
if (retval < 0) {
printf("bind failed: %s", strerror(errno));
close(hotplug_sock);
hotplug_sock = -1;
return -1;
}
return hotplug_sock;
}
QString UsbThread::getDeivceTypeFromPath(const QString &path)
{
QString res;
QString bInterfaceClass;
QStringList bInterfaceClassPathList = getRetFromCommand(QStringList{"find", path ,"-name", "bInterfaceClass"}).split("\n");
for (int i = 0; i < bInterfaceClassPathList.size(); i++) {
bInterfaceClass = getRetFromCommand(QStringList{"cat", bInterfaceClassPathList.at(i)});
if (bInterfaceClass == "00" || bInterfaceClass == "ff"){
continue;
}
res = bInterfaceClass;
}
return res;
}
QString UsbThread::getRetFromCommand(const QStringList &command)
{
QProcess proc;
QStringList options;
options << "-c"<< command.join(" ");
proc.closeWriteChannel();
proc.start("bash", options);
proc.waitForFinished();
QString res = QString(proc.readAll());
proc.close();
if(res.right(1) == "\n")
res.chop(1);
return res;
}
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