/**********************************************************************************
2012.12.29 -->> Linux下用Socket检测设备的挂载(实现设备的自动挂载)
关于Wifi网络名称和密码配置:
方案一:
在硬盘的根目录下新建一个文件:wifi_cfg.txt.
内容(模板)如下:
WLAN_NAME=TEST WLan
WLAN_PASSWORD=23456789
其中"TEST WLan"可以替换为其他的名称作为“Wifi网络名”。
"23456789"为连接本网络的密码。
系统在检测到USB Wifi之后，就会去探测这个文件，如果有，并且数据有效，
就会按照本配置来设置网络，否则系统使用方案二。
方案二:
如果在硬盘的根目录下没有找到文件:wifi_cfg.txt.
则系统会使用一个默认的Wifi网络名和密码.
默认的网络名称为:HACK WLan
默认的网络密码为:12345678
(本默认网络名和密码，你们可以提出更改为其他名称 作为默认)
注意:
1.在系统中，我限制了网络名称为64个字节以内。
2.设置网络密码时，如果位数小于8位，视为无效密码，则系统使用默认配置。
***********************************************************************************/
#define TMP_BUF_LEN (64)
#define WifiConfigName "/mnt/hd1/wifi_cfg.txt"
char pFixedUSBWifiName[TMP_BUF_LEN]={0};
char pFixedUSBWifiPassWord[TMP_BUF_LEN]={0};
static void CheckStringNULL(char *pInputString,int len)
{
int i=0;
for(i=0;i=line_idx))
break;
}
if(pOutputBuf && (i==line_idx))
{
int length=strlen(line)>bufferLen?bufferLen:strlen(line);
memcpy(pOutputBuf,line,length);
}else
{
i=-1;
}
if (line != NULL) free(line);
if (fp != NULL) fclose(fp);
return i;
}
/*
return :
-1 : name or password is invalid.
0 : name and password are valid.
*/
static int GetWifiNameAndPassword()
{
char *p=NULL;
char *pTempBuffer=NULL;
if ( access(WifiConfigName, F_OK ) == 0 )
{
memset(pFixedUSBWifiName,0,TMP_BUF_LEN);
memset(pFixedUSBWifiPassWord,0,TMP_BUF_LEN);
if( (1==get_file_line(WifiConfigName,pFixedUSBWifiName,TMP_BUF_LEN,1))
&& (2==get_file_line(WifiConfigName,pFixedUSBWifiPassWord,TMP_BUF_LEN,2)) )
{ // name and password exist.
if(NULL!=(pTempBuffer=malloc(sizeof(char)*TMP_BUF_LEN)))
{
memcpy(pTempBuffer,pFixedUSBWifiName,TMP_BUF_LEN);
memset(pFixedUSBWifiName,0,TMP_BUF_LEN);
p=strchr(pTempBuffer,'=');
if(NULL!=p) memcpy(pFixedUSBWifiName,p+1,pTempBuffer+TMP_BUF_LEN-p);
else
goto ret_error;
CheckStringNULL(pFixedUSBWifiName,pTempBuffer+TMP_BUF_LEN-p);
//printf("000 pFixedUSBWifiName === [%s] \n",pFixedUSBWifiName);
memcpy(pTempBuffer,pFixedUSBWifiPassWord,TMP_BUF_LEN);
memset(pFixedUSBWifiPassWord,0,TMP_BUF_LEN);
p=strchr(pTempBuffer,'=');
if(NULL!=p) memcpy(pFixedUSBWifiPassWord,p+1,pTempBuffer+TMP_BUF_LEN-p);
else
goto ret_error;
//pFixedUSBWifiPassWord[pTempBuffer+TMP_BUF_LEN-p]="\0";
CheckStringNULL(pFixedUSBWifiPassWord,pTempBuffer+TMP_BUF_LEN-p);
//printf("000 pFixedUSBWifiPassWord === [%s] [%d]\n",pFixedUSBWifiPassWord,strlen(pFixedUSBWifiPassWord));
if(strlen(pFixedUSBWifiPassWord)<8) goto ret_error;
if(NULL!=pTempBuffer) free(pTempBuffer);
return 0;
}else
goto ret_error;
}else
goto ret_error;
}else
{ // donot exist wifi config file.
goto ret_error;
}
ret_error:
//printf("111 pFixedUSBWifiName === [%s] \n",pFixedUSBWifiName);
//printf("111 pFixedUSBWifiPassWord === [%s] \n",pFixedUSBWifiPassWord);
if(NULL!=pTempBuffer) free(pTempBuffer);
return -1;
}
static void MountUSBWiFi(void)
{
char *pTempCmdString=NULL;
system("killall dhcpd");
system("ifconfig ra0 192.168.0.1 netmask 255.255.255.0");
system("/etc/Wireless/RT2870AP/iwpriv ra0 set AuthMode=WPA2PSK");
system("/etc/Wireless/RT2870AP/iwpriv ra0 set EncrypType=TKIP");
#if 1
if(0==GetWifiNameAndPassword())
{ // use fixed name and password.
if(NULL!=(pTempCmdString=malloc(sizeof(char)*TMP_BUF_LEN*2)))
{
memset(pTempCmdString,0,TMP_BUF_LEN*2);
sprintf(pTempCmdString,"/etc/Wireless/RT2870AP/iwpriv ra0 set SSID=\"%s\"",pFixedUSBWifiName);
//printf(" pTempCmdString ========== [%s] \n",pTempCmdString);
system(pTempCmdString);
memset(pTempCmdString,0,TMP_BUF_LEN*2);
sprintf(pTempCmdString,"/etc/Wireless/RT2870AP/iwpriv ra0 set WPAPSK=%s",pFixedUSBWifiPassWord);
//printf(" pTempCmdString ========== [%s] \n",pTempCmdString);
system(pTempCmdString);
memset(pTempCmdString,0,TMP_BUF_LEN*2);
sprintf(pTempCmdString,"/etc/Wireless/RT2870AP/iwpriv ra0 set SSID=\"%s\"",pFixedUSBWifiName);
//printf(" pTempCmdString ========== [%s] \n",pTempCmdString);
system(pTempCmdString);
free(pTempCmdString);
pTempCmdString=NULL;
}
}
else
#endif
{ // use default name and password.
system("/etc/Wireless/RT2870AP/iwpriv ra0 set SSID=\"HACK WLan\"");
system("/etc/Wireless/RT2870AP/iwpriv ra0 set WPAPSK=12345678");
system("/etc/Wireless/RT2870AP/iwpriv ra0 set SSID=\"HACK WLan\"");
}
system("/etc/Wireless/RT2870AP/dhcpd &");
return 0;
}
static int InitHotplugSock(void)
{
struct sockaddr_nl snl;
const int buffersize = 16 * 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;
}
void CheackUSBWiFi(void)
{
#define UEVENT_BUFFER_SIZE 2048
int hotplug_sock;
char buf_cache[UEVENT_BUFFER_SIZE],*pTempSeekPt,*pTempSeek2;
int tTempNum,tMntValue;
int tMntFlag;
int tRemoveFlag = 0;
hotplug_sock = InitHotplugSock();
memset(buf_cache, 0 ,sizeof(buf_cache));
while(1)
{
tTempNum=recv(hotplug_sock,buf_cache, sizeof(buf_cache), 0);
if( tTempNum<0 )
{
printf("======usb hot plug error!!!=======\n");
break;
}
if( tTempNum!=0 )
{
buf_cache[tTempNum]=0;
//printf("buf_cache (pinggle print): %s \n", buf_cache);
if( NULL!=strstr(buf_cache,"add@/devices/virtual/net/ra0") )
{
printf("usb ==== ADD pinggle print \n");
MountUSBWiFi();
}
if( NULL!=strstr(buf_cache,"remove@/devices/virtual/net/ra0") )
{
printf("usb ==== Remove pinggle print \n");
}
}
}
}
