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-rw-r--r--contrib/package/iwinfo/src/iwinfo_nl80211.c173
-rw-r--r--contrib/package/iwinfo/src/iwinfo_nl80211.h1
2 files changed, 125 insertions, 49 deletions
diff --git a/contrib/package/iwinfo/src/iwinfo_nl80211.c b/contrib/package/iwinfo/src/iwinfo_nl80211.c
index 21797c13d..9cfd21432 100644
--- a/contrib/package/iwinfo/src/iwinfo_nl80211.c
+++ b/contrib/package/iwinfo/src/iwinfo_nl80211.c
@@ -29,6 +29,7 @@
extern struct iwinfo_iso3166_label ISO3166_Names[];
static struct nl80211_state *nls = NULL;
+static int nl80211_ioctlsock = -1;
static int nl80211_init(void)
{
@@ -36,6 +37,19 @@ static int nl80211_init(void)
if( !nls )
{
+ nl80211_ioctlsock = socket(AF_INET, SOCK_DGRAM, 0);
+ if( nl80211_ioctlsock < 0 )
+ {
+ err = -ENOLINK;
+ goto err;
+ }
+ else if( fcntl(nl80211_ioctlsock, F_SETFD,
+ fcntl(nl80211_ioctlsock, F_GETFD) | FD_CLOEXEC) < 0 )
+ {
+ err = -EINVAL;
+ goto err;
+ }
+
nls = malloc(sizeof(struct nl80211_state));
if( !nls ) {
err = -ENOMEM;
@@ -391,7 +405,9 @@ static char * nl80211_wpasupp_info(const char *ifname, const char *cmd)
out:
close(sock);
- unlink(local.sun_path);
+
+ if( local.sun_family )
+ unlink(local.sun_path);
return rv;
}
@@ -438,7 +454,7 @@ static char * nl80211_phy2ifname(const char *ifname)
return nif[0] ? nif : NULL;
}
-static char * nl80211_add_tempif(const char *ifname)
+static char * nl80211_ifadd(const char *ifname)
{
int phyidx;
char *rv = NULL;
@@ -467,7 +483,7 @@ static char * nl80211_add_tempif(const char *ifname)
return rv;
}
-static void nl80211_del_tempif(const char *ifname)
+static void nl80211_ifdel(const char *ifname)
{
struct nl80211_msg_conveyor *req, *res;
@@ -483,6 +499,71 @@ static void nl80211_del_tempif(const char *ifname)
}
}
+static int nl80211_ifup(const char *ifname)
+{
+ struct ifreq ifr;
+
+ strncpy(ifr.ifr_name, ifname, IFNAMSIZ);
+
+ if( ioctl(nl80211_ioctlsock, SIOCGIFFLAGS, &ifr) )
+ return 0;
+
+ ifr.ifr_flags |= (IFF_UP | IFF_RUNNING);
+
+ return !ioctl(nl80211_ioctlsock, SIOCSIFFLAGS, &ifr);
+}
+
+static int nl80211_ifdown(const char *ifname)
+{
+ struct ifreq ifr;
+
+ strncpy(ifr.ifr_name, ifname, IFNAMSIZ);
+
+ if( ioctl(nl80211_ioctlsock, SIOCGIFFLAGS, &ifr) )
+ return 0;
+
+ ifr.ifr_flags &= ~(IFF_UP | IFF_RUNNING);
+
+ return !ioctl(nl80211_ioctlsock, SIOCSIFFLAGS, &ifr);
+}
+
+static int nl80211_ifmac(const char *ifname)
+{
+ struct ifreq ifr;
+
+ strncpy(ifr.ifr_name, ifname, IFNAMSIZ);
+
+ if( ioctl(nl80211_ioctlsock, SIOCGIFHWADDR, &ifr) )
+ return 0;
+
+ ifr.ifr_hwaddr.sa_data[1]++;
+ ifr.ifr_hwaddr.sa_data[2]++;
+
+ return !ioctl(nl80211_ioctlsock, SIOCSIFHWADDR, &ifr);
+}
+
+static void nl80211_hostapd_hup(const char *ifname)
+{
+ int fd, pid = 0;
+ char buf[32];
+ char *phy = strncmp(ifname, "phy", 3) ? nl80211_ifname2phy(ifname) : ifname;
+
+ if( phy )
+ {
+ snprintf(buf, sizeof(buf), "/var/run/wifi-%s.pid", phy);
+ if( (fd = open(buf, O_RDONLY)) > 0 )
+ {
+ if( read(fd, buf, sizeof(buf)) > 0 )
+ pid = atoi(buf);
+
+ close(fd);
+ }
+
+ if( pid > 0 )
+ kill(pid, 1);
+ }
+}
+
int nl80211_probe(const char *ifname)
{
@@ -491,6 +572,11 @@ int nl80211_probe(const char *ifname)
void nl80211_close(void)
{
+ if( nl80211_ioctlsock > -1 )
+ {
+ close(nl80211_ioctlsock);
+ }
+
if( nls )
{
if( nls->nl_sock )
@@ -1150,7 +1236,6 @@ int nl80211_get_scanlist(const char *ifname, char *buf, int *len)
{
int freq, rssi, qmax, count;
char *res;
- char cmd[256];
char ssid[128] = { 0 };
char bssid[18] = { 0 };
char cipher[256] = { 0 };
@@ -1165,10 +1250,10 @@ int nl80211_get_scanlist(const char *ifname, char *buf, int *len)
}
/* Need to spawn a temporary iface for scanning */
- else if( (res = nl80211_add_tempif(ifname)) != NULL )
+ else if( (res = nl80211_ifadd(ifname)) != NULL )
{
count = nl80211_get_scanlist(res, buf, len);
- nl80211_del_tempif(res);
+ nl80211_ifdel(res);
return count;
}
}
@@ -1253,57 +1338,47 @@ int nl80211_get_scanlist(const char *ifname, char *buf, int *len)
/* AP scan */
else
{
- if( (res = nl80211_ifname2phy(ifname)) != NULL )
+ /* Got a temp interface, don't create yet another one */
+ if( !strncmp(ifname, "tmp.", 4) )
{
- /* Got a temp interface, don't create yet another one */
- if( !strncmp(ifname, "tmp.", 4) )
- {
- sprintf(cmd, "ifconfig %s up 2>/dev/null", ifname);
- if( WEXITSTATUS(system(cmd)) )
- return -1;
+ if( !nl80211_ifup(ifname) )
+ return -1;
+
+ wext_get_scanlist(ifname, buf, len);
+ nl80211_ifdown(ifname);
+ return 0;
+ }
- wext_get_scanlist(ifname, buf, len);
+ /* Spawn a new scan interface */
+ else
+ {
+ if( !(res = nl80211_ifadd(ifname)) )
+ goto out;
- sprintf(cmd, "ifconfig %s down 2>/dev/null", ifname);
- (void) WEXITSTATUS(system(cmd));
+ if( !nl80211_ifmac(res) )
+ goto out;
- return 0;
+ /* if we can take the new interface up, the driver supports an
+ * additional interface and there's no need to tear down the ap */
+ if( nl80211_ifup(res) )
+ {
+ wext_get_scanlist(res, buf, len);
+ nl80211_ifdown(res);
}
- /* Spawn a new scan interface */
- else
+ /* driver cannot create secondary interface, take down ap
+ * during scan */
+ else if( nl80211_ifdown(ifname) && nl80211_ifup(res) )
{
- sprintf(cmd, "ifconfig %s down 2>/dev/null", ifname);
- if( WEXITSTATUS(system(cmd)) )
- goto out;
-
- sprintf(cmd, "iw phy %s interface add scan.%s "
- "type station 2>/dev/null", res, ifname);
- if( WEXITSTATUS(system(cmd)) )
- goto out;
-
- sprintf(cmd, "ifconfig scan.%s up 2>/dev/null", ifname);
- if( WEXITSTATUS(system(cmd)) )
- goto out;
-
- sprintf(cmd, "scan.%s", ifname);
- wext_get_scanlist(cmd, buf, len);
-
- out:
- sprintf(cmd, "ifconfig scan.%s down 2>/dev/null", ifname);
- (void) WEXITSTATUS(system(cmd));
-
- sprintf(cmd, "iw dev scan.%s del 2>/dev/null", ifname);
- (void) WEXITSTATUS(system(cmd));
-
- sprintf(cmd, "ifconfig %s up 2>/dev/null", ifname);
- (void) WEXITSTATUS(system(cmd));
-
- sprintf(cmd, "killall -HUP hostapd 2>/dev/null");
- (void) WEXITSTATUS(system(cmd));
-
- return 0;
+ wext_get_scanlist(res, buf, len);
+ nl80211_ifdown(res);
+ nl80211_ifup(ifname);
+ nl80211_hostapd_hup(ifname);
}
+
+ out:
+ nl80211_ifdel(res);
+ return 0;
}
}
diff --git a/contrib/package/iwinfo/src/iwinfo_nl80211.h b/contrib/package/iwinfo/src/iwinfo_nl80211.h
index 569da00d9..5fc1d74d2 100644
--- a/contrib/package/iwinfo/src/iwinfo_nl80211.h
+++ b/contrib/package/iwinfo/src/iwinfo_nl80211.h
@@ -24,6 +24,7 @@
#include <unistd.h>
#include <string.h>
#include <dirent.h>
+#include <signal.h>
#include <sys/socket.h>
#include <sys/un.h>
#include <net/if.h>
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-28 03:37:32 +0000