Hi again,
On 17/3/19 13:38, aitor_czr wrote:
>
> Hi Eward,
>
> On 7/3/19 8:38, Edward Bartolo <edbarx@???> via Dng wrote:
>> Hi Everyone,
>>
>> My version of simple-netaid-backend has been debugged to connect when
>> there is only one active wifi hotspot. It was previously failing to
>> connect because there was an error in a while loop which prevented
>> iteration from taking place when there was only one active wifi
>> hotspot.
>>
>> Please, note my graphical frontend does not use unnecessary cosmetics
>> to make it look appealing to the eyes. My aim was simplicity and low
>> use of system processing and memory. Moreover, the backend
>> establishes a connection using low level calls to avoid using
>> ifupdown. It uses instead ifconfig, iwconfig, wpa_supplicant and
>> dhclient.
> I'm working again on simple-netaid, and i 'd like to share with you
> the C code
>
> for bringing up/down a concrete network interface (void
> interface_up/down, respectivelly):
>
>
>
> /******** Bring up the interface *******/
>
> void interface_up (const char *if_name)
>
> {
> struct ifreq ifr;
> int skfd = 0;
>
> strncpy(ifr.ifr_name, if_name, IFNAMSIZ);
>
> /* Create a channel to the NET kernel. */
> if((skfd = iw_sockets_open()) < 0)
> {
> perror("socket");
> return -1;
> }
>
> skfd = socket (AF_INET, SOCK_DGRAM, 0);
> if (skfd && ioctl(skfd, SIOCGIFFLAGS, &ifr) >= 0) {
> printf("Activating interface %s", if_name);
> strncpy(ifr.ifr_name, if_name, IFNAMSIZ);
> ifr.ifr_flags |= (IFF_UP | IFF_RUNNING);
> ioctl(skfd, SIOCSIFFLAGS, &ifr);
> } else {
> printf("Getting flags for interface %s failed, not activating
> interface.", if_name);
> }
>
> /* Close the socket. */
> iw_sockets_close(skfd);
>
> }
>
>
> /******** Bring down the interface *******/
>
> void interface_down (const char *if_name)
> {
> struct ifreq ifr;
> int skfd = 0;
>
> strncpy(ifr.ifr_name, if_name, IFNAMSIZ);
>
> /* Create a channel to the NET kernel. */
> if((skfd = iw_sockets_open()) < 0)
> {
> perror("socket");
> return -1;
> }
>
> if (skfd && ioctl(skfd, SIOCGIFFLAGS, &ifr) >= 0) {
> printf("Taking down interface %s", if_name);
> strncpy(ifr.ifr_name, if_name, IFNAMSIZ);
> ifr.ifr_flags &= ~IFF_UP;
> ioctl(skfd, SIOCSIFFLAGS, &ifr);
> } else {
> printf("Getting flags for interface %s failed, not taking down
> interface.", if_name);
> }
>
> /* Close the socket. */
> iw_sockets_close(skfd);
> }
>
> HTH,
>
> Aitor.
>
I'm also working on an alternative to poettering's ifplugd for the
automatically wired connect option of simple-netaid.
Aitor.