wpa_cli 鏈接 wifi

轉自：http://hi.baidu.com/yyangjjun/item/9dfe8e175439fc7a1009b5ba

 

1: run wpa_supplicant first use the following command: wpa_supplicant -Dwext -iwlan0 -C/data/system/wpa_supplicant -c/data/misc/wifi/wpa_supplicant.conf 2: Run the command line tool wpa_cli to connect wifi wpa_cli -p/data/system/wpa_supplicant -iwlan0 Then , it will let you set network interactively  some common command: >scan = to scan the neighboring AP >scan_results = show the scan results >status = check out the current connection information >terminate = terminate wpa_supplicant >quit = exit wpa_cli >add_network = it will return a network id to you >set_network <network id> <variable> <value> = set network variables (shows list of variables when run without arguments), success will return OK, or will return Fail >select_network <network id> = select a network (disable others) >disable_network <network id> = disable a network >enable_network <network id> = enable a network > set_network 0 priority 0 > list_network > save_config 3: example for AP that doesn`t have encryption >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 if normal, we have connectted to the AP 「666」, now you need a IP to access internet, for example: dhcpcd wlan0 if everything is ok, it will get an IP & can access internet for AP that has WEP >add_network      (assume returns 1) >set_network 1 ssid 「666」 >set_network 1 key_mgmt NONE >set_network 1 wep_key0 「your ap passwork」(if usting ASCII, it need double quotation marks, if using hex, then don`t need the double quotation marks) >set_network 1 wep_tx_keyidx 0 >select_network 1  (optional, remember, if you are connecting with another AP, you should select it to disable the another) >enable_network 1 and then ,get an IP to access internet for AP that has WPA-PSK/WPA2-PSK >add_network      (assume returns 2) >set_network 2 ssid 「666」 >set_network 2 psk 「your pre-shared key」 >select_network 2  (optional, remember, if you are connecting with another AP, you should select it to disable the another) >enable_network 2 there is still some others options to be set, but wpa_supplicant will choose the default for you, the default will include all we need to set and then ,get an IP to access internet 命令執行後，wpa_cli 會輸出鏈接的過程信息。若是一切正確，則最後後輸出： <2>CTRL-EVENT-CONNECTED - Connection to xx:xx:xx:xx:xx:xx completed (reauth) [id=0 id_str=] 獲取IP地址 用 quit 命令退出wpa_cli 。而後用 dhclient wlan0 命令獲取IP地址。