1 files changed, 68 insertions, 0 deletions

diff --git a/tools/util.c b/tools/util.c
index de70388..7ed59e4 100644
--- a/tools/util.c
+++ b/tools/util.c
@@ -16,7 +16,9 @@
 #include <fido/rs256.h>
 #include <fido/eddsa.h>
 
+#include <errno.h>
 #include <fcntl.h>
+#include <limits.h>
 #include <stdint.h>
 #include <stdio.h>
 #include <stdlib.h>
@@ -78,6 +80,25 @@ open_read(const char *file)
         return (f);
 }
 
+int
+base10(const char *str)
+{
+        char *ep;
+        long long ll;
+
+        ll = strtoll(str, &ep, 10);
+        if (str == ep || *ep != '\0')
+                return (-1);
+        else if (ll == LLONG_MIN && errno == ERANGE)
+                return (-1);
+        else if (ll == LLONG_MAX && errno == ERANGE)
+                return (-1);
+        else if (ll < 0 || ll > INT_MAX)
+                return (-1);
+
+        return ((int)ll);
+}
+
 void
 xxd(const void *buf, size_t count)
 {
@@ -362,3 +383,50 @@ print_cred(FILE *out_f, int type, const fido_cred_t *cred)
 
         free(id);
 }
+
+int
+cose_type(const char *str, int *type)
+{
+        if (strcmp(str, "es256") == 0)
+                *type = COSE_ES256;
+        else if (strcmp(str, "rs256") == 0)
+                *type = COSE_RS256;
+        else if (strcmp(str, "eddsa") == 0)
+                *type = COSE_EDDSA;
+        else {
+                *type = 0;
+                return (-1);
+        }
+
+        return (0);
+}
+
+const char *
+cose_string(int type)
+{
+        switch (type) {
+        case COSE_EDDSA:
+                return ("eddsa");
+        case COSE_ES256:
+                return ("es256");
+        case COSE_RS256:
+                return ("rs256");
+        default:
+                return ("unknown");
+        }
+}
+
+const char *
+prot_string(int prot)
+{
+        switch (prot) {
+        case FIDO_CRED_PROT_UV_OPTIONAL:
+                return ("uvopt");
+        case FIDO_CRED_PROT_UV_OPTIONAL_WITH_ID:
+                return ("uvopt+id");
+        case FIDO_CRED_PROT_UV_REQUIRED:
+                return ("uvreq");
+        default:
+                return ("unknown");
+        }
+}