(krb5_cc_default_name): buffer range checking

git-svn-id: svn://svn.h5l.se/heimdal/trunk/heimdal@2314 ec53bebd-3082-4978-b11e-865c3cabbd6b
1997-07-15 15:20:48 +00:00
parent fe3a5b11b5
commit 6335294d14
1 changed files with 8 additions and 4 deletions
--- a/lib/krb5/cache.c
+++ b/lib/krb5/cache.c
@@ -111,10 +111,14 @@ krb5_cc_default_name(krb5_context context)
    static char name[1024];
    char *p;
    p = getenv("KRB5CCNAME");
-    if(p)
-	strcpy(name, p);
-    else
-	sprintf(name, "FILE:/tmp/krb5cc_%d", getuid());
+    if(p) {
+	strncpy (name, p, sizeof(name));
+	name[sizeof(name) - 1] = '\0';
+    } else
+	snprintf(name,
+		 sizeof(name),
+		 "FILE:/tmp/krb5cc_%u",
+		 (unsigned)getuid());
    return name;
 }