1 files changed, 72 insertions, 0 deletions
diff --git a/support/export/keys.c b/support/export/keys.c
new file mode 100644
index 0000000..4814808
--- /dev/null
+++ b/support/export/keys.c
@@ -0,0 +1,72 @@
+/*
+ * keys.c		Key management for nfsd. Currently, keys
+ *			are kept in a single file only, but eventually,
+ *			support for a key server should be added.
+ *
+ * Copyright (C) 1995 Olaf Kirch <okir@monad.swb.de>
+ */
+
+#include "config.h"
+
+#include <sys/stat.h>
+#include "nfslib.h"
+#include "exportfs.h"
+#include "xmalloc.h"
+
+struct keycache {
+	struct keycache *	k_next;
+	struct nfskeyent	k_data;
+};
+
+static struct keycache *	keycache = NULL;
+static time_t			lastmod = 0;
+
+static void	key_reload(void);
+
+
+struct nfskey *
+key_lookup(char *hname)
+{
+	struct keycache	*kc;
+
+	key_reload();
+
+	for (kc = keycache; kc; kc = kc->k_next) {
+#if 0
+		if (matchhostname(kc->k_data.k_hostname, hname))
+#else
+		if (!strcmp(kc->k_data.k_hostname, hname))
+#endif
+			return &kc->k_data.k_key;
+	}
+
+	return NULL;
+}
+
+static void
+key_reload(void)
+{
+	struct stat	stb;
+	struct keycache	*cp;
+	struct nfskeyent *kp;
+
+	if (stat(_PATH_NFSKEYS, &stb) >= 0 && stb.st_mtime == lastmod)
+		return;
+
+	while (keycache) {
+		cp = keycache->k_next;
+		xfree(keycache);
+		keycache = cp;
+	}
+
+	setnfskeyent(_PATH_NFSKEYS);
+	while ((kp = getnfskeyent()) != NULL) {
+		cp = (struct keycache *) xmalloc(sizeof(*cp));
+		cp->k_data = *kp;
+		cp->k_next = keycache;
+		keycache = cp;
+	}
+	endnfskeyent();
+
+	lastmod = stb.st_mtime;
+}