svcgssd: Encryption types not being parsed correctly

When svcgssd reads the supported encrytion types from the
kernel, they are prefixed with a 'enctypes='. That prefix
has to be ignored to correctly parse the rest of the types.

Signed-off-by: Steve Dickson <steved@redhat.com>

1 files changed, 7 insertions, 0 deletions

diff --git a/utils/gssd/svcgssd_krb5.c b/utils/gssd/svcgssd_krb5.c
index 6c34faf..1d44d34 100644
--- a/utils/gssd/svcgssd_krb5.c
+++ b/utils/gssd/svcgssd_krb5.c
@@ -38,6 +38,7 @@
 
 #include <stdio.h>
 #include <errno.h>
+#include <ctype.h>
 #include <gssapi/gssapi.h>
 #include <krb5.h>
 
@@ -98,6 +99,12 @@ parse_enctypes(char *enctypes)
 	if (n == 0)
 		return ENOENT;
 
+	/* Skip pass any non digits */
+	while (*enctypes && isdigit(*enctypes) == 0)
+		enctypes++;
+	if (*enctypes == '\0')
+		return EINVAL;
+
 	/* Allocate space for enctypes array */
 	if ((parsed_enctypes = (int *) calloc(n, sizeof(int))) == NULL) {
 		return ENOMEM;