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wpa_supplicant无线网络配置

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发表于 2014-8-29 10:53:19 |显示全部楼层
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。

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 anyaccess point
quit
q
exits wpa_cli
terminate
term
kills wpa_supplicant
reconfigure
recon
reloads wpa_supplicant with the configuration filesupplied (-c parameter)
scan
scan
scans for available access points (onlyscans 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 theirstatus (active or not, enabled or disabled)
select_network
select_n
select a network among those defined to initiate aconnection (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 forselection (ie disable_network 0)
remove_network
remove_n
removes a network and its configuration from thelist (ie remove_network 0)
add_network
add_n
adds a new network to the list. Its id will becreated automatically
set_network
set_n
shows a very short list of available options toconfigure a network when supplied with no parameters.
See next section for a list of extremely usefulparameters to be used with set_network and get_network.
get_network
get_n
displays the required parameter for the specifiednetwork. 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 <networkid> <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
group=TKIP
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)


例1、连接无加密的AP
>add_network (It will display a network id for you, assume itreturns 0)
>set_network 0 ssid "666"
>set_network 0 key_mgmt NONE
>enable_network 0
>quit

例2、连接WEP加密AP
>add_network   (assumereturn 1)
>set_network 1 ssid "666"
>set_network 1 key_mgmt NONE
>set_network 1 wep_key0 "your appassword"
>enable_network 1

例3、连接WPA-PSK/WPA2-PSK加密的AP
>add_network   (assumereturn 2)
>set_network 2 ssid "666"
>set_network 2 psk "your pre-sharedkey"
>enable_network2

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。

例如:
ctrl_interface=DIR=/data/system/wpa_supplicant GROUP=systemupdate_config=1
network={
ssid="my access point"
proto=WPA
key_mgmt=WPA-PSK
psk="you pass words"
}




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