/*
* Try the various devices until one return something we can use
*/
static int
scan_devices(int skfd,
int format)
{
char buff[1024];
struct ifconf ifc;
struct ifreq *ifr;
int i;
int ret;
/* Get list of active devices */
ifc.ifc_len = sizeof(buff);
ifc.ifc_buf = buff;
if(ioctl(skfd, SIOCGIFCONF, &ifc) < 0)
{
fprintf(stderr, "SIOCGIFCONF: %s\n", strerror(errno));
return(-1);
}
ifr = ifc.ifc_req;
/* Print the first match */
for(i = ifc.ifc_len / sizeof(struct ifreq); --i >= 0; ifr++)
{
/* Try to print an ESSID */
ret = print_essid(skfd, ifr->ifr_name, format);
if(ret == 0)
return(0); /* Success */
/* Try to print a nwid */
ret = print_nwid(skfd, ifr->ifr_name, format);
if(ret == 0)
return(0); /* Success */
}
return(-1);
}
/*
* Check options and call the proper handler
*/
static int
print_one_device(int skfd,
int format,
int wtype,
const char* ifname)
{
int ret;
/* Check wtype */
switch(wtype)
{
case WTYPE_AP:
/* Try to print an AP */
ret = print_ap(skfd, ifname, format);
break;
case WTYPE_CHANNEL:
/* Try to print channel */
ret = print_channel(skfd, ifname, format);
break;
case WTYPE_FREQ:
/* Try to print frequency */
ret = print_freq(skfd, ifname, format);
break;
case WTYPE_MODE:
/* Try to print the mode */
ret = print_mode(skfd, ifname, format);
break;
case WTYPE_PROTO:
/* Try to print the protocol */
ret = print_protocol(skfd, ifname, format);
break;
default:
/* Try to print an ESSID */
ret = print_essid(skfd, ifname, format);
if(ret < 0)
{
/* Try to print a nwid */
ret = print_nwid(skfd, ifname, format);
}
}
return(ret);
}
/*
* The main !
*/
int
main(int argc,
char ** argv)
{
int skfd = -1; /* generic raw socket desc. */
int format = FORMAT_DEFAULT;
int ret = -1;
/* Create a channel to the NET kernel. */
if((skfd = sockets_open()) < 0)
{
perror("socket");
return(-1);
}
/* No argument */
if(argc == 1)
{
/* Look on all devices */
ret = scan_devices(skfd, format);
close(skfd);
return(ret);
}
/* Only ask for first AP address */
if((!strcmp(argv[1], "--ap")) || (!strcmp(argv[1], "-a")))
{
/* Look on all devices */
ret = scan_ap(skfd, format);
close(skfd);
return(ret);
}
/* Only the format, no interface name */
if((!strncmp(argv[1], "--scheme", 4)) || (!strcmp(argv[1], "-s")))
{
/* Look on all devices */
format = FORMAT_SCHEME;
ret = scan_devices(skfd, format);
close(skfd);
return(ret);
}
/* Help */
if((argc > 3) ||
(!strncmp(argv[1], "-h", 9)) || (!strcmp(argv[1], "--help")))
{
fprintf(stderr, "Usage: iwgetid [interface]\n");
fprintf(stderr, " [interface] --scheme\n");
return(-1);
}
/* If at least a device name */
if(argc > 1)
{
/* Check extra format argument */
if(argc > 2)
{
/* Only ask for first AP address */
if((!strcmp(argv[2], "--ap")) || (!strcmp(argv[2], "-a")))
{
ret = print_ap(skfd, argv[1], format);
close(skfd);
return(ret);
}
/* Want scheme format */
if((!strncmp(argv[2], "--scheme", 4)) || (!strcmp(argv[2], "-s")))
format = FORMAT_SCHEME;
}
/* Try to print an ESSID */
ret = print_essid(skfd, argv[1], format);
if(ret == -1)
{
/* Try to print a nwid */
ret = print_nwid(skfd, argv[1], format);
}
}
/* Close the socket. */
close(skfd);
return(ret);
}
