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/* ISC license. */
#include <sys/types.h>
#include <skalibs/stddjb.h>
#include <bcnm/wpactrl.h>
#define USAGE "bcnm-wpactrl-scan socket-to-wpa_supplicant"
#define dieusage() strerr_dieusage(100, USAGE)
static int print_scan_results (wpactrl_t *a, char const *s, size_t len, void *aux, tain_t *stamp)
{
stralloc sa = STRALLOC_ZERO ;
ssize_t r ;
if (!wpactrl_querysa(a, "SCAN_RESULTS", &sa, stamp)) return 0 ;
r = buffer_put(buffer_1, sa.s, sa.len) ;
stralloc_free(&sa) ;
(void)s ;
(void)len ;
(void)aux ;
return r >= 0 ;
}
static wpactrl_xchgitem_t exchange_item =
{
.filter = "CTRL-EVENT-SCAN-RESULTS",
.cb = &print_scan_results
} ;
int main (int argc, char const *const *argv)
{
wpactrl_t a = WPACTRL_ZERO ;
wpactrl_xchg_t dt ;
tain_t deadline ;
wparesponse_t r ;
PROG = "bcnm-wpactrl-scan" ;
if (argc < 2) dieusage() ;
tain_now_g() ;
if (!wpactrl_start_g(&a, argv[1], 2000))
strerr_diefu2sys(111, "connect to ", argv[1]) ;
r = wpactrl_command_g(&a, "SCAN") ;
if (r != WPA_OK && r != WPA_FAILBUSY)
strerr_dief1x(111, "SCAN command failed") ;
tain_from_millisecs(&deadline, 10000) ;
tain_add_g(&deadline, &deadline) ;
wpactrl_xchg_init(&dt, &exchange_item, 1, &deadline, 0) ;
if (!wpactrl_xchg_start(&a, &dt))
strerr_diefu1sys(111, "start wpactrl exchange") ;
{
iopause_fd x = { .fd = wpactrl_fd(&a), .events = IOPAUSE_READ } ;
for (;;)
{
int r ;
tain_add_g(&deadline, &tain_infinite_relative) ;
wpactrl_xchg_computedeadline(&dt, &deadline) ;
r = iopause_g(&x, 1, &deadline) ;
if (r < 0)
strerr_diefu1sys(111, "iopause") ;
if (!r)
{
if (wpactrl_xchg_timeout_g(&a, &dt))
strerr_dief1x(111, "scan exchange timed out") ;
else
strerr_diefu1x(111, "timeout unrelated to the scan exchange") ;
}
if (wpactrl_update(&a) < 0)
strerr_diefu1sys(111, "wpactrl_update") ;
r = wpactrl_xchg_event_g(&a, &dt) ;
if (r < 0)
strerr_diefu1sys(111, r < -1 ? "print_scan_results" : "wpactrl_xchg_event") ;
if (r) break ;
}
}
wpactrl_end(&a) ;
if (!buffer_flush(buffer_1))
strerr_diefu1sys(111, "write to stdout") ;
return 0 ;
}
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