解决WPA_SUPPLICANT无法连接WEP OPEN和SHARE协议

1.WPA_SUPPLICANT当遇到WEP加密时，由于无法判断是采用OPEN/SHARE,通常会在声称.conf文件中加入
auth_alg=OPEN SHARED（至少Android遇到）,但事实上某些wifi网卡驱动不能实现同时OPEN和SHARED同时设置，我用的RT2070就不能够了，任意时刻只能用一个，而Atheroid就可以同时设两个。这里给出解决不能同时设置的方法，在wpa_supplicant.c:wpa_supplicant_associate()中加入以下内容:
    if (ssid->auth_alg) {
        algs = 0;
        if (ssid->auth_alg & WPA_AUTH_ALG_OPEN)
            algs |= AUTH_ALG_OPEN_SYSTEM;
        if (ssid->auth_alg & WPA_AUTH_ALG_SHARED)
            algs |= AUTH_ALG_SHARED_KEY;
        if (ssid->auth_alg & WPA_AUTH_ALG_LEAP)
            algs |= AUTH_ALG_LEAP;
        wpa_printf(MSG_DEBUG, "Overriding auth_alg selection: 0x%x",
               algs);

        if ((algs & AUTH_ALG_OPEN_SYSTEM) && (algs & AUTH_ALG_SHARED_KEY) ) {
            algs = AUTH_ALG_SHARED_KEY;
            G_TRY_CONNECT ++;

            if (G_TRY_CONNECT >= 4) {
                algs = AUTH_ALG_OPEN_SYSTEM;
                wpa_printf(MSG_DEBUG, "RAYDEBUG--------------------change to ALG_OPEN_SYSTEM");
            }
        }
    }