static void set_chan(struct wstate *ws, int c)
{
if (c == ws->ws_chan)
return;
if (wi_set_channel(ws->ws_wi, c))
err(1, "wi_set_channel()");
ws->ws_chan = c;
}
static int card_set_chan(struct sstate *ss, int chan)
{
return wi_set_channel(ss->ss_wi, chan);
}
/**
* Get the different functions for to interact with the device:
* - setting monitor mode
* - changing channel
* - capturing data
* - injecting packets
* @param iface The interface name
*/
static int do_cygwin_open(struct wif *wi, char *iface)
{
struct priv_cygwin *priv = wi_priv(wi);
void *lib;
char *file;
char *parm;
int rc = -1;
int tempret = 0;
if (!iface)
return -1;
if (strlen(iface) == 0)
return -1;
priv->useDll = 0;
if (stristr(iface, DLL_EXTENSION))
priv->useDll = 1;
if (priv->useDll)
{
file = strdup(iface);
if (!file)
return -1;
parm = strchr(file, '|');
if (parm)
*parm++ = 0;
/* load lib */
lib = dlopen(file, RTLD_LAZY);
if (!lib)
goto errdll;
priv->pc_init = dlsym(lib, xstr(CYGWIN_DLL_INIT));
priv->pc_set_chan = dlsym(lib, xstr(CYGWIN_DLL_SET_CHAN));
priv->pc_get_mac = dlsym(lib, xstr(CYGWIN_DLL_GET_MAC));
priv->pc_set_mac = dlsym(lib, xstr(CYGWIN_DLL_SET_MAC));
priv->pc_close = dlsym(lib, xstr(CYGWIN_DLL_CLOSE));
priv->pc_inject = dlsym(lib, xstr(CYGWIN_DLL_INJECT));
priv->pc_sniff = dlsym(lib, xstr(CYGWIN_DLL_SNIFF));
if (!(priv->pc_init && priv->pc_set_chan && priv->pc_get_mac
&& priv->pc_inject && priv->pc_sniff && priv->pc_close))
goto errdll;
/* init lib */
if ((rc = priv->pc_init(parm)))
goto errdll;
priv->pc_did_init = 1;
rc = 0;
errdll:
free(file);
}
else
{
#ifdef HAVE_AIRPCAP
// Check if it's an Airpcap device
priv->isAirpcap = isAirpcapDevice(iface);
if (priv->isAirpcap)
{
// Get functions
priv->pc_init = airpcap_init;
priv->pc_set_chan = airpcap_set_chan;
priv->pc_get_mac = airpcap_get_mac;
priv->pc_set_mac = airpcap_set_mac;
priv->pc_close = airpcap_close;
priv->pc_inject = airpcap_inject;
priv->pc_sniff = airpcap_sniff;
rc = 0;
}
#endif
}
if (rc == 0)
{
// Don't forget to initialize
if (! priv->useDll)
{
rc = priv->pc_init(iface);
if (rc == 0)
priv->pc_did_init = 1;
else
fprintf(stderr,"Error initializing <%s>\n", iface);
}
/* set initial chan */
tempret = wi_set_channel(wi, 1);
if (tempret)
rc = tempret;
}
else
{
// Show an error message if the adapter is not supported
fprintf(stderr, "Adapter <%s> not supported\n", iface);
}
return rc;
}
