HS20: Provide appropriate permission to the OSU related files

The icon files and the osu-providers.txt that are generated may not have
proper permission for external programs to access. Set the access
permissions to the same as the permissions for osu_dir.

Signed-off-by: ASHUTOSH NARAYAN <ashutoshx.narayan@intel.com>

diff --git a/wpa_supplicant/hs20_supplicant.c b/wpa_supplicant/hs20_supplicant.c
index 53c7d63c8a6f180fdbd7d6f34fb7878764e5cfcb..eb18ed2bd716181dcde749994a1565496b3d87e4 100644 (file)
--- a/wpa_supplicant/hs20_supplicant.c
+++ b/wpa_supplicant/hs20_supplicant.c
@@ -7,6 +7,7 @@
  */
 
 #include "includes.h"
+#include <sys/stat.h>
 
 #include "common.h"
 #include "eloop.h"
@@ -216,6 +217,30 @@ int hs20_anqp_send_req(struct wpa_supplicant *wpa_s, const u8 *dst, u32 stypes,
 }
 
 
+static void hs20_set_osu_access_permission(const char *osu_dir,
+                                          const char *fname)
+{
+       struct stat statbuf;
+
+       /* Get OSU directory information */
+       if (stat(osu_dir, &statbuf) < 0) {
+               wpa_printf(MSG_WARNING, "Cannot stat the OSU directory %s",
+                          osu_dir);
+               return;
+       }
+
+       if (chmod(fname, statbuf.st_mode) < 0) {
+               wpa_printf(MSG_WARNING,
+                          "Cannot change the permissions for %s", fname);
+               return;
+       }
+
+       if (chown(fname, statbuf.st_uid, statbuf.st_gid) < 0) {
+               wpa_printf(MSG_WARNING, "Cannot change the ownership for %s",
+                          fname);
+       }
+}
+
 static int hs20_process_icon_binary_file(struct wpa_supplicant *wpa_s,
                                         const u8 *sa, const u8 *pos,
                                         size_t slen)
@@ -278,6 +303,9 @@ static int hs20_process_icon_binary_file(struct wpa_supplicant *wpa_s,
        f = fopen(fname, "wb");
        if (f == NULL)
                return -1;
+
+       hs20_set_osu_access_permission(wpa_s->conf->osu_dir, fname);
+
        if (fwrite(pos, slen, 1, f) != 1) {
                fclose(f);
                unlink(fname);
@@ -479,6 +507,9 @@ static void hs20_osu_fetch_done(struct wpa_supplicant *wpa_s)
                hs20_free_osu_prov(wpa_s);
                return;
        }
+
+       hs20_set_osu_access_permission(wpa_s->conf->osu_dir, fname);
+
        for (i = 0; i < wpa_s->osu_prov_count; i++) {
                struct osu_provider *osu = &wpa_s->osu_prov[i];
                if (i > 0)