Added a mechanism for quering driver wrappers for available interfaces

[libeap.git] / wpa_supplicant / ctrl_iface.c

diff --git a/wpa_supplicant/ctrl_iface.c b/wpa_supplicant/ctrl_iface.c
index 4154583..650368b 100644 (file)
--- a/wpa_supplicant/ctrl_iface.c
+++ b/wpa_supplicant/ctrl_iface.c
@@ -30,7 +30,10 @@
 #include "wps_supplicant.h"
 #include "wps/wps.h"
 
+extern struct wpa_driver_ops *wpa_supplicant_drivers[];
 
+static int wpa_supplicant_global_iface_list(struct wpa_global *global,
+                                           char *buf, int len);
 static int wpa_supplicant_global_iface_interfaces(struct wpa_global *global,
                                                  char *buf, int len);
 
@@ -1624,6 +1627,9 @@ char * wpa_supplicant_ctrl_iface_process(struct wpa_supplicant *wpa_s,
        } else if (os_strncmp(buf, "AP_SCAN ", 8) == 0) {
                if (wpa_supplicant_ctrl_iface_ap_scan(wpa_s, buf + 8))
                        reply_len = -1;
+       } else if (os_strcmp(buf, "INTERFACE_LIST") == 0) {
+               reply_len = wpa_supplicant_global_iface_list(
+                       wpa_s->global, reply, reply_size);
        } else if (os_strcmp(buf, "INTERFACES") == 0) {
                reply_len = wpa_supplicant_global_iface_interfaces(
                        wpa_s->global, reply, reply_size);
@@ -1739,6 +1745,63 @@ static int wpa_supplicant_global_iface_remove(struct wpa_global *global,
 }
 
 
+static void wpa_free_iface_info(struct wpa_interface_info *iface)
+{
+       struct wpa_interface_info *prev;
+
+       while (iface) {
+               prev = iface;
+               iface = iface->next;
+
+               os_free(prev->ifname);
+               os_free(prev->desc);
+               os_free(prev);
+       }
+}
+
+
+static int wpa_supplicant_global_iface_list(struct wpa_global *global,
+                                           char *buf, int len)
+{
+       int i, res;
+       struct wpa_interface_info *iface = NULL, *last = NULL, *tmp;
+       char *pos, *end;
+
+       for (i = 0; wpa_supplicant_drivers[i]; i++) {
+               struct wpa_driver_ops *drv = wpa_supplicant_drivers[i];
+               if (drv->get_interfaces == NULL)
+                       continue;
+               tmp = drv->get_interfaces(global->drv_priv);
+               if (tmp == NULL)
+                       continue;
+
+               if (last == NULL)
+                       iface = last = tmp;
+               else
+                       last->next = tmp;
+               while (last->next)
+                       last = last->next;
+       }
+
+       pos = buf;
+       end = buf + len;
+       for (tmp = iface; tmp; tmp = tmp->next) {
+               res = os_snprintf(pos, end - pos, "%s\t%s\t%s\n",
+                                 tmp->drv_name, tmp->ifname,
+                                 tmp->desc ? tmp->desc : "");
+               if (res < 0 || res >= end - pos) {
+                       *pos = '\0';
+                       break;
+               }
+               pos += res;
+       }
+
+       wpa_free_iface_info(iface);
+
+       return pos - buf;
+}
+
+
 static int wpa_supplicant_global_iface_interfaces(struct wpa_global *global,
                                                  char *buf, int len)
 {
@@ -1791,6 +1854,9 @@ char * wpa_supplicant_global_ctrl_iface_process(struct wpa_global *global,
        } else if (os_strncmp(buf, "INTERFACE_REMOVE ", 17) == 0) {
                if (wpa_supplicant_global_iface_remove(global, buf + 17))
                        reply_len = -1;
+       } else if (os_strcmp(buf, "INTERFACE_LIST") == 0) {
+               reply_len = wpa_supplicant_global_iface_list(
+                       global, reply, reply_size);
        } else if (os_strcmp(buf, "INTERFACES") == 0) {
                reply_len = wpa_supplicant_global_iface_interfaces(
                        global, reply, reply_size);