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-rw-r--r--wpa_supplicant/Makefile4
-rw-r--r--wpa_supplicant/README19
-rw-r--r--wpa_supplicant/defconfig3
-rw-r--r--wpa_supplicant/events.c21
-rw-r--r--wpa_supplicant/main.c52
-rw-r--r--wpa_supplicant/wpa_supplicant.c92
-rw-r--r--wpa_supplicant/wpa_supplicant_i.h16
7 files changed, 205 insertions, 2 deletions
diff --git a/wpa_supplicant/Makefile b/wpa_supplicant/Makefile
index 5f5a30a..550d44b 100644
--- a/wpa_supplicant/Makefile
+++ b/wpa_supplicant/Makefile
@@ -316,6 +316,10 @@ CFLAGS += -DCONFIG_NO_VLAN
OBJS += ibss_rsn.o
endif
+ifdef CONFIG_MATCH_IFACE
+CFLAGS += -DCONFIG_MATCH_IFACE
+endif
+
ifdef CONFIG_P2P
OBJS += p2p_supplicant.o
OBJS += p2p_supplicant_sd.o
diff --git a/wpa_supplicant/README b/wpa_supplicant/README
index fefc0d3..11ab01a 100644
--- a/wpa_supplicant/README
+++ b/wpa_supplicant/README
@@ -410,7 +410,7 @@ usage:
wpa_supplicant [-BddfhKLqqtuvW] [-P<pid file>] [-g<global ctrl>] \
[-G<group>] \
-i<ifname> -c<config file> [-C<ctrl>] [-D<driver>] [-p<driver_param>] \
- [-b<br_ifname> [-N -i<ifname> -c<conf> [-C<ctrl>] [-D<driver>] \
+ [-b<br_ifname> [-MN -i<ifname> -c<conf> [-C<ctrl>] [-D<driver>] \
[-p<driver_param>] [-b<br_ifname>] [-m<P2P Device config file>] ...
options:
@@ -434,6 +434,7 @@ options:
-u = enable DBus control interface
-v = show version
-W = wait for a control interface monitor before starting
+ -M = start describing matching interface
-N = start describing new interface
-m = Configuration file for the P2P Device
@@ -476,6 +477,22 @@ wpa_supplicant \
-c wpa2.conf -i wlan1 -D wext
+If the interfaces on which wpa_supplicant is to run are not known or do
+not exist, wpa_supplicant can match an interface when it arrives. Each
+matched interface is separated with -M argument and the -i argument now
+allows for pattern matching.
+
+As an example, the following command would start wpa_supplicant for a
+specific wired interface called lan0, any interface starting with wlan
+and lastly any other interface. Each match has its own configuration
+file, and for the wired interface a specific driver has also been given.
+
+wpa_supplicant \
+ -M -c wpa_wired.conf -ilan0 -D wired \
+ -M -c wpa1.conf -iwlan* \
+ -M -c wpa2.conf
+
+
If the interface is added in a Linux bridge (e.g., br0), the bridge
interface needs to be configured to wpa_supplicant in addition to the
main interface:
diff --git a/wpa_supplicant/defconfig b/wpa_supplicant/defconfig
index 79632e6..1d05198 100644
--- a/wpa_supplicant/defconfig
+++ b/wpa_supplicant/defconfig
@@ -467,6 +467,9 @@ CONFIG_PEERKEY=y
# Hotspot 2.0
#CONFIG_HS20=y
+# Enable interface matching in wpa_supplicant
+#CONFIG_MATCH_IFACE=y
+
# Disable roaming in wpa_supplicant
#CONFIG_NO_ROAMING=y
diff --git a/wpa_supplicant/events.c b/wpa_supplicant/events.c
index 833f5a0..1483ad4 100644
--- a/wpa_supplicant/events.c
+++ b/wpa_supplicant/events.c
@@ -2758,6 +2758,13 @@ wpa_supplicant_event_interface_status(struct wpa_supplicant *wpa_s,
}
#endif /* CONFIG_P2P */
+#ifdef CONFIG_MATCH_IFACE
+ if (wpa_s->matched) {
+ wpa_supplicant_remove_iface(wpa_s->global, wpa_s, 0);
+ break;
+ }
+#endif /* CONFIG_MATCH_IFACE */
+
#ifdef CONFIG_TERMINATE_ONLASTIF
/* check if last interface */
if (!any_interfaces(wpa_s->global->ifaces))
@@ -4030,6 +4037,20 @@ void wpa_supplicant_event_global(void *ctx, enum wpa_event_type event,
return;
}
}
+#ifdef CONFIG_MATCH_IFACE
+ else if (data->interface_status.ievent == EVENT_INTERFACE_ADDED) {
+ struct wpa_interface *wpa_i;
+
+ wpa_i = wpa_supplicant_match_iface(
+ ctx, data->interface_status.ifname);
+ if (!wpa_i)
+ return;
+ wpa_s = wpa_supplicant_add_iface(ctx, wpa_i, NULL);
+ os_free(wpa_i);
+ if (wpa_s)
+ wpa_s->matched = 1;
+ }
+#endif /* CONFIG_MATCH_IFACE */
if (wpa_s)
wpa_supplicant_event(wpa_s, event, data);
diff --git a/wpa_supplicant/main.c b/wpa_supplicant/main.c
index 3ab80a5..e08c2fd 100644
--- a/wpa_supplicant/main.c
+++ b/wpa_supplicant/main.c
@@ -81,6 +81,9 @@ static void usage(void)
#ifdef CONFIG_P2P
" -m = Configuration file for the P2P Device interface\n"
#endif /* CONFIG_P2P */
+#ifdef CONFIG_MATCH_IFACE
+ " -M = start describing new matching interface\n"
+#endif /* CONFIG_MATCH_IFACE */
" -N = start describing new interface\n"
" -o = override driver parameter for new interfaces\n"
" -O = override ctrl_interface parameter for new interfaces\n"
@@ -153,6 +156,28 @@ static void wpa_supplicant_fd_workaround(int start)
}
+#ifdef CONFIG_MATCH_IFACE
+static int wpa_supplicant_init_match(struct wpa_global *global)
+{
+ /*
+ * The assumption is that the first driver is the primary driver and
+ * will handle the arrival / departure of interfaces.
+ */
+ if (wpa_drivers[0]->global_init && !global->drv_priv[0]) {
+ global->drv_priv[0] = wpa_drivers[0]->global_init(global);
+ if (!global->drv_priv[0]) {
+ wpa_printf(MSG_ERROR,
+ "Failed to initialize driver '%s'",
+ wpa_drivers[0]->name);
+ return -1;
+ }
+ }
+
+ return 0;
+}
+#endif /* CONFIG_MATCH_IFACE */
+
+
int main(int argc, char *argv[])
{
int c, i;
@@ -176,7 +201,7 @@ int main(int argc, char *argv[])
for (;;) {
c = getopt(argc, argv,
- "b:Bc:C:D:de:f:g:G:hi:I:KLm:No:O:p:P:qsTtuvW");
+ "b:Bc:C:D:de:f:g:G:hi:I:KLMm:No:O:p:P:qsTtuvW");
if (c < 0)
break;
switch (c) {
@@ -282,6 +307,20 @@ int main(int argc, char *argv[])
case 'W':
params.wait_for_monitor++;
break;
+#ifdef CONFIG_MATCH_IFACE
+ case 'M':
+ params.match_iface_count++;
+ iface = os_realloc_array(params.match_ifaces,
+ params.match_iface_count,
+ sizeof(struct wpa_interface));
+ if (!iface)
+ goto out;
+ params.match_ifaces = iface;
+ iface = &params.match_ifaces[params.match_iface_count -
+ 1];
+ os_memset(iface, 0, sizeof(*iface));
+ break;
+#endif /* CONFIG_MATCH_IFACE */
case 'N':
iface_count++;
iface = os_realloc_array(ifaces, iface_count,
@@ -328,6 +367,9 @@ int main(int argc, char *argv[])
ifaces[i].ctrl_interface == NULL) ||
ifaces[i].ifname == NULL) {
if (iface_count == 1 && (params.ctrl_interface ||
+#ifdef CONFIG_MATCH_IFACE
+ params.match_iface_count ||
+#endif /* CONFIG_MATCH_IFACE */
params.dbus_ctrl_interface))
break;
usage();
@@ -341,6 +383,11 @@ int main(int argc, char *argv[])
}
}
+#ifdef CONFIG_MATCH_IFACE
+ if (exitcode == 0)
+ exitcode = wpa_supplicant_init_match(global);
+#endif /* CONFIG_MATCH_IFACE */
+
if (exitcode == 0)
exitcode = wpa_supplicant_run(global);
@@ -351,6 +398,9 @@ int main(int argc, char *argv[])
out:
wpa_supplicant_fd_workaround(0);
os_free(ifaces);
+#ifdef CONFIG_MATCH_IFACE
+ os_free(params.match_ifaces);
+#endif /* CONFIG_MATCH_IFACE */
os_free(params.pid_file);
os_program_deinit();
diff --git a/wpa_supplicant/wpa_supplicant.c b/wpa_supplicant/wpa_supplicant.c
index 7b43600..047ca10 100644
--- a/wpa_supplicant/wpa_supplicant.c
+++ b/wpa_supplicant/wpa_supplicant.c
@@ -11,6 +11,10 @@
*/
#include "includes.h"
+#ifdef CONFIG_MATCH_IFACE
+#include <net/if.h>
+#include <fnmatch.h>
+#endif /* CONFIG_MATCH_IFACE */
#include "common.h"
#include "crypto/random.h"
@@ -4911,6 +4915,74 @@ static void wpa_supplicant_deinit_iface(struct wpa_supplicant *wpa_s,
}
+#ifdef CONFIG_MATCH_IFACE
+
+/**
+ * wpa_supplicant_match_iface - Match an interface description to a name
+ * @global: Pointer to global data from wpa_supplicant_init()
+ * @ifname: Name of the interface to match
+ * Returns: Pointer to the created interface description or %NULL on failure
+ */
+struct wpa_interface * wpa_supplicant_match_iface(struct wpa_global *global,
+ const char *ifname)
+{
+ int i;
+ struct wpa_interface *iface, *miface;
+
+ for (i = 0; i < global->params.match_iface_count; i++) {
+ miface = &global->params.match_ifaces[i];
+ if (!miface->ifname ||
+ fnmatch(miface->ifname, ifname, 0) == 0) {
+ iface = os_zalloc(sizeof(*iface));
+ if (!iface)
+ return NULL;
+ *iface = *miface;
+ iface->ifname = ifname;
+ return iface;
+ }
+ }
+
+ return NULL;
+}
+
+
+/**
+ * wpa_supplicant_match_existing - Match existing interfaces
+ * @global: Pointer to global data from wpa_supplicant_init()
+ * Returns: 0 on success, -1 on failure
+ */
+static int wpa_supplicant_match_existing(struct wpa_global *global)
+{
+ struct if_nameindex *ifi, *ifp;
+ struct wpa_supplicant *wpa_s;
+ struct wpa_interface *iface;
+
+ ifp = if_nameindex();
+ if (!ifp) {
+ wpa_printf(MSG_ERROR, "if_nameindex: %s", strerror(errno));
+ return -1;
+ }
+
+ for (ifi = ifp; ifi->if_name; ifi++) {
+ wpa_s = wpa_supplicant_get_iface(global, ifi->if_name);
+ if (wpa_s)
+ continue;
+ iface = wpa_supplicant_match_iface(global, ifi->if_name);
+ if (iface) {
+ wpa_s = wpa_supplicant_add_iface(global, iface, NULL);
+ os_free(iface);
+ if (wpa_s)
+ wpa_s->matched = 1;
+ }
+ }
+
+ if_freenameindex(ifp);
+ return 0;
+}
+
+#endif /* CONFIG_MATCH_IFACE */
+
+
/**
* wpa_supplicant_add_iface - Add a new network interface
* @global: Pointer to global data from wpa_supplicant_init()
@@ -5212,6 +5284,18 @@ struct wpa_global * wpa_supplicant_init(struct wpa_params *params)
if (params->override_ctrl_interface)
global->params.override_ctrl_interface =
os_strdup(params->override_ctrl_interface);
+#ifdef CONFIG_MATCH_IFACE
+ global->params.match_iface_count = params->match_iface_count;
+ if (params->match_iface_count) {
+ global->params.match_ifaces =
+ os_calloc(params->match_iface_count,
+ sizeof(struct wpa_interface));
+ os_memcpy(global->params.match_ifaces,
+ params->match_ifaces,
+ params->match_iface_count *
+ sizeof(struct wpa_interface));
+ }
+#endif /* CONFIG_MATCH_IFACE */
#ifdef CONFIG_P2P
if (params->conf_p2p_dev)
global->params.conf_p2p_dev =
@@ -5291,6 +5375,11 @@ int wpa_supplicant_run(struct wpa_global *global)
eloop_sock_requeue()))
return -1;
+#ifdef CONFIG_MATCH_IFACE
+ if (wpa_supplicant_match_existing(global))
+ return -1;
+#endif
+
if (global->params.wait_for_monitor) {
for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next)
if (wpa_s->ctrl_iface && !wpa_s->p2p_mgmt)
@@ -5359,6 +5448,9 @@ void wpa_supplicant_deinit(struct wpa_global *global)
os_free(global->params.ctrl_interface_group);
os_free(global->params.override_driver);
os_free(global->params.override_ctrl_interface);
+#ifdef CONFIG_MATCH_IFACE
+ os_free(global->params.match_ifaces);
+#endif /* CONFIG_MATCH_IFACE */
#ifdef CONFIG_P2P
os_free(global->params.conf_p2p_dev);
#endif /* CONFIG_P2P */
diff --git a/wpa_supplicant/wpa_supplicant_i.h b/wpa_supplicant/wpa_supplicant_i.h
index 9acc359..4ec8d4e 100644
--- a/wpa_supplicant/wpa_supplicant_i.h
+++ b/wpa_supplicant/wpa_supplicant_i.h
@@ -228,6 +228,17 @@ struct wpa_params {
char *conf_p2p_dev;
#endif /* CONFIG_P2P */
+#ifdef CONFIG_MATCH_IFACE
+ /**
+ * match_ifaces - Interface descriptions to match
+ */
+ struct wpa_interface *match_ifaces;
+
+ /**
+ * match_iface_count - Number of defined matching interfaces
+ */
+ int match_iface_count;
+#endif /* CONFIG_MATCH_IFACE */
};
struct p2p_srv_bonjour {
@@ -458,6 +469,9 @@ struct wpa_supplicant {
unsigned char own_addr[ETH_ALEN];
unsigned char perm_addr[ETH_ALEN];
char ifname[100];
+#ifdef CONFIG_MATCH_IFACE
+ int matched;
+#endif /* CONFIG_MATCH_IFACE */
#ifdef CONFIG_CTRL_IFACE_DBUS
char *dbus_path;
#endif /* CONFIG_CTRL_IFACE_DBUS */
@@ -1108,6 +1122,8 @@ void free_hw_features(struct wpa_supplicant *wpa_s);
void wpa_show_license(void);
+struct wpa_interface * wpa_supplicant_match_iface(struct wpa_global *global,
+ const char *ifname);
struct wpa_supplicant * wpa_supplicant_add_iface(struct wpa_global *global,
struct wpa_interface *iface,
struct wpa_supplicant *parent);