1 files changed, 33 insertions, 7 deletions

diff --git a/examples/cred.c b/examples/cred.c
index e471f7e..3e0a30f 100644
--- a/examples/cred.c
+++ b/examples/cred.c
@@ -139,6 +139,27 @@ verify_cred(int type, const char *fmt, const unsigned char *authdata_ptr,
         fido_cred_free(&cred);
 }
 
+static fido_dev_t *
+open_from_manifest(const fido_dev_info_t *dev_infos, size_t len,
+    const char *path)
+{
+        size_t i;
+        fido_dev_t *dev;
+
+        for (i = 0; i < len; i++) {
+                const fido_dev_info_t *curr = fido_dev_info_ptr(dev_infos, i);
+                if (path == NULL ||
+                    strcmp(path, fido_dev_info_path(curr)) == 0) {
+                        dev = fido_dev_new_with_info(curr);
+                        if (fido_dev_open_with_info(dev) == FIDO_OK)
+                                return (dev);
+                        fido_dev_free(&dev);
+                }
+        }
+
+        return (NULL);
+}
+
 int
 main(int argc, char **argv)
 {
@@ -150,6 +171,7 @@ main(int argc, char **argv)
         const char      *pin = NULL;
         const char      *key_out = NULL;
         const char      *id_out = NULL;
+        const char      *path = NULL;
         unsigned char   *body = NULL;
         long long        seconds = 0;
         size_t           len;
@@ -157,6 +179,8 @@ main(int argc, char **argv)
         int              ext = 0;
         int              ch;
         int              r;
+        fido_dev_info_t *dev_infos = NULL;
+        size_t           dev_infos_len = 0;
 
         if ((cred = fido_cred_new()) == NULL)
                 errx(1, "fido_cred_new");
@@ -218,19 +242,21 @@ main(int argc, char **argv)
                 }
         }
 
+        fido_init(0);
+
         argc -= optind;
         argv += optind;
 
-        if (argc != 1)
+        if (argc > 1)
                 usage();
+        dev_infos = fido_dev_info_new(16);
+        fido_dev_info_manifest(dev_infos, 16, &dev_infos_len);
+        if (argc == 1)
+                path = argv[0];
 
-        fido_init(0);
-
-        if ((dev = fido_dev_new()) == NULL)
-                errx(1, "fido_dev_new");
+        if ((dev = open_from_manifest(dev_infos, dev_infos_len, path)) == NULL)
+                errx(1, "open_from_manifest");
 
-        if ((r = fido_dev_open(dev, argv[0])) != FIDO_OK)
-                errx(1, "fido_dev_open: %s (0x%x)", fido_strerr(r), r);
         if (u2f)
                 fido_dev_force_u2f(dev);