转载:Linux下使用wpa_supplicant连接WPA加密方式的WIFI
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, doesn't 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：
/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_interface=DIR=/data/system/wpa_supplicant?GROUP=system update_config=1
network={
ssid="my access point"
proto=WPA
key_mgmt=WPA-PSK
psk="you pass words"
}
具体格式可参考：http://hostap.epitest.fi/gitweb/gitweb.cgi?p=hostap.git;a=blob_plain;f=wpa_supplicant/wpa_supplicant.conf
