[maemo-developers] Change ESSID of WLAN0 via ioctl

[From: Vladislav Grinchenko]

Leandro,

what's the error message ioctl() reports?

On as side note, you should use strncpy() and avoid mixing stdio calls
with iostream (printf, cout).

--vlg

On Tue, 2008-01-29 at 10:01 -0300, Leandro Sales wrote:
> Hi list.
>   How can I change the wireless access point via programming code in
> maemo platform? I have the following piece of code that works
> perfectly in my laptop, but when used in maemo, the wlan0 interface
> disconnect but not reconnect to the new ESSID.
>    Any suggestion? Thanks
> 
> Leandro.
> 
> int setEssid (char iface[6], char essid[IW_ESSID_MAX_SIZE]) {
>        int soc;
>        struct iwreq wrq;
> 
>        cout << "Changing Access Points...";
>        strcpy(wrq.ifr_name, iface);
>        wrq.u.essid.pointer = (caddr_t)essid;
>        wrq.u.essid.length = strlen(essid)+1;
>        wrq.u.essid.flags = 1;
> 
>        soc = socket(AF_UNIX, SOCK_DGRAM, 0);
>        if (ioctl(soc, SIOCSIWESSID, &wrq) < 0) {
>                printf("Error setting ESSID on %s: %s\n", iface,
> strerror(errno));
>                close(soc);
>                exit(-1);
>        } else {
>                cout << " done!\n";
>        }
> 
>        return 1;
> }
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