网站设计哪家公司好,怎样搭建属于自己的网站,网站开发实战作业答案,.net网站开发优点From: http://blog.163.com/wxiongn126/blog/static/11788203820102262748358/ 目前可以使用wireless-tools 或wpa_supplicant工具来配置无线网络。请记住重要的一点是#xff0c;对无线网络的配置是全局性的#xff0c;而非针对具体的接口。 wpa_supplicant是一个较好的选…From: http://blog.163.com/wxiongn126/blog/static/11788203820102262748358/ 目前可以使用wireless-tools 或wpa_supplicant工具来配置无线网络。请记住重要的一点是对无线网络的配置是全局性的而非针对具体的接口。 wpa_supplicant是一个较好的选择但缺点是它不支持所有的驱动。请浏览wpa_supplicant网站获得它所支持的驱动列表。另外wpa_supplicant目前只能连接到那些你已经配置好ESSID的无线网络。wireless-tools支持几乎所有的无线网卡和驱动但它不能连接到那些只支持WPA的AP。 经过编译后的wpa_supplicant源程序可以看到两个主要的可执行工具wpa_supplicant和wpa_cli。wpa_supplicant是核心程序它和wpa_cli的关系就是服务和客户端的关系后台运行wpa_supplicant使用wpa_cli来搜索、设置、和连接网络。 如何用wpa_supplicant使能一个wifi连接
Step by step
1、运行wpa_supplicant程序 执行/system/bin/wpa_supplicant -d -Dwext -iwlan0 -c/data/misc/wifi/wpa_supplicant.conf
其中
-d 增加调试信息
-Dwext wext驱动名称
-iwlan0 wlan0网络接口名称
/system/bin/wpa_supplicant wpa_supplicant可执行程序path
/data/misc/wifi/wpa_supplicant.conf wpa_supplicant的配置文件path
2、运行命令行工具wpa_cli
执行 wpa_cli -iwlan0 -p/data/system/wpa_supplicant
注-p/data/system/wpa_supplicant中的wpa_supplicant并不是可执行程序而是个控制套接字。
此时会进入交互模式。其中交互模式的命令如下表 Full command Short command Description status stat displays the current connection status disconnect disc prevents wpa_supplicant from connecting to any access point quit q exits wpa_cli terminate term kills wpa_supplicant reconfigure recon reloads wpa_supplicant with the configuration file supplied (-c parameter) scan scan scans for available access points (only scans it, doesnt display anything) scan_result scan_r displays the results of the last scan list_networks list_n displays a list of configured networks and their status (active or not, enabled or disabled) select_network select_n select a network among those defined to initiate a connection (ie select_network 0) enable_network enable_n makes a configured network available for selection (ie enable_network 0) disable_network disable_n makes a configured network unavailable for selection (ie disable_network 0) remove_network remove_n removes a network and its configuration from the list (ie remove_network 0) add_network add_n adds a new network to the list. Its id will be created automatically set_network set_n shows a very short list of available options to configure a network when supplied with no parameters. See next section for a list of extremely useful parameters to be used with set_network and get_network. get_network get_n displays the required parameter for the specified network. See next section for a list of parameters save_config save_c saves the configuration 设置网络的基本格式set_network network id key parameter [parameter]
显示网络信息的基本格式get_network network id key
相应的参数如下表 Key Description Parameters ssid Access point name string id_str String identifying the network string priority Connection priority over other APs number (0 being the default low priority) bssid Mac address of the access point mac address scan_ssid Enable/disbale ssid scan 0, 1, 2 key_mgmt Type of key management WPA-PSK, WPA_EAP, None pairwise Pairwise ciphers for WPA CCMP, TKIP groupTKIP Group ciphers for WPA CCMP, TKIP, WEP104, WEP40 psk Pre-Shared Key (clear or encrypted) string wep_key0 WEP key (up to 4: wep_key[0123]) string eap Extensible Authentication Protocol MD5, MSCHAPV2, OTP, GTC, TLS, PEAP, TTLS identity EAP identity string string password EAP password string ca_cert Pathname to CA certificate file /full/path/to/certificate client_cert Pathname to client certificate /full/path/to/certificate (PEM/DER) private_key Pathname to a client private key file /full/path/to/private_key (PEM/DER/PFX)
eg.1、连接无加密的AP
add_network (It will display a network id for you, assume it returns 0)
set_network 0 ssid 666
set_network 0 key_mgmt NONE
enable_network 0
quit
eg.2、连接WEP加密AP
add_network (assume return 1)
set_network 1 ssid 666
set_network 1 key_mgmt NONE
set_network 1 wep_key0 your ap password
enable_network 1
eg.3、连接WPA-PSK/WPA2-PSK加密的AP
add_network (assume return 2)
set_network 2 ssid 666
set_network 2 psk your pre-shared key
enable_network 2
到此wifi模块就能连接上AP了。
3、以上是通过命令行工具wpa_cli来实现wifi网络的连接。当然也可以通过wpa_supplicant的配置文件来实现连接。
再回顾下运行wpa_supplicant时执行的命令
/system/bin/wpa_supplicant -d -Dwext -iwlan0 -c/data/misc/wifi/wpa_supplicant.conf
我们在执行时加上了-c/data/misc/wifi/wpa_supplicant.conf我们可以将我们要连接的AP的设置以一定的格式写入wpa_supplicant.conf配置文件中即可。
eg.
ctrl_interfaceDIR/data/system/wpa_supplicant GROUPsystem update_config1
network{
ssidmy access point
protoWPA
key_mgmtWPA-PSK
pskyou pass words
}
具体格式可参考http://hostap.epitest.fi/gitweb/gitweb.cgi?phostap.git;ablob_plain;fwpa_supplicant/wpa_supplicant.conf
