wpa_cli与wpa_supplicant的交互命令

1）通过adb命令行，可以直接打开supplicant，从而运行wpa_cli，可以解决客户没有显示屏而无法操作WIFI的问题，还可以避免UI的问题带到driver。进一步来说，可以用在很多没有键盘输入和LCD输出的安卓终端产品的操作上。

wpa_supplicant包含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。

（2）在wpa_cli交互模式下可以执行很多命令，列表如下：

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 nextsection for a list of parameters
save_config	save_c	saves the configuration

（3）平台操作实例（仅限于MTK平台 且具ROOT权限）

A，首先保证ADB连入，且能运行adb remount，这样避免系统文件只读。然后设置wpa_cli和wpa_supplicant有较强权限。

B，运行echo 1 > /dev/wmtWifi，启动WIFI驱动。但是这个使能不会表现在安卓界面上层，默认是要在启动安卓时开启WIFI模块的，也即设置中的WIFI要默认ON。

C，进入/system/bin目录，首先运行服务端wpa_supplicant。

./wpa_supplicant -iwlan0 -Dnl80211 -c/system/etc/wifi/wpa_supplicant.conf

正常启动后的回显如下：

不可收入态表明该服务端已经在运行了（也可能是可输入状态，只要后面的wpa_cali可连接就行）。-i -D -c的参数意义可直接在Help中查询，具体有些参数可能因平台不同而有差异。

D，另开启一个ADB SHELL，作客户端运行wpa_cali。如下：

cd /system/bin

wpa_cli -p /data/misc/wpa_supplicant

回显如下说明正常并处于交互模式：

E，执行一系列命令看看

scan

scan_results

F，连WIFI的命令行，有以下几种：

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

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

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

我自己的实验图如下：

以上过程就说明联网OK，可以上网了。

参考原文：http://cache.baiducontent.com/c?m=9f65cb4a8c8507ed4fece7631046893b4c4380146d96864968d4e414c42246100024b8ed7a66471980853a3c50f11e41bca770216c5d61aa9bc98b4addb9922b3bcd7a742613d51742c419de8a1c729f7e875a98ea42b3e1&p=8b2a975bcd8711a052eedb2f4a4c&newp=8b2a971f81822dec08e29e7d495d92695c02dc3051dcd14f2895ff0b&user=baidu&fm=sc&query=adb+shell+wifi&qid=&p1=4

参考原文：http://blog.sina.com.cn/s/blog_55465b470100l73l.html

wpa_cli与wpa_supplicant的交互命令