1 files changed, 173 insertions, 0 deletions
diff --git a/support/nfs/rmtab.c b/support/nfs/rmtab.c
new file mode 100644
index 0000000..154b26f
--- /dev/null
+++ b/support/nfs/rmtab.c
@@ -0,0 +1,173 @@
+/*
+ * support/nfs/rmtab.c
+ *
+ * Handling for rmtab.
+ *
+ * Copyright (C) 1995, 1996 Olaf Kirch <okir@monad.swb.de>
+ */
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include <fcntl.h>
+#include <stdlib.h>
+#include <string.h>
+#include <stdio.h>
+#include <unistd.h>
+#include <errno.h>
+#include <signal.h>
+#include "nfslib.h"
+
+/*
+ * Colons in incoming IPv6 presentation addresses have to
+ * replaced with another character, since rmtab already
+ * uses colons to delineate fields.
+ *
+ * Use a printable character, but one that would never be
+ * found in a presentation address or domain name
+ */
+#define IPV6_COLON	';'
+
+#define LINELEN		(2048)
+
+static FILE	*rmfp = NULL;
+
+struct state_paths rmtab;
+
+int
+setrmtabent(char *type)
+{
+	if (rmfp)
+		fclose(rmfp);
+	rmfp = fsetrmtabent(rmtab.statefn, type);
+	return (rmfp != NULL);
+}
+
+FILE *
+fsetrmtabent(char *fname, char *type)
+{
+	int	readonly = !strcmp(type, "r");
+	FILE	*fp;
+
+	if (!fname)
+		return NULL;
+	if ((fp = fopen(fname, type)) == NULL) {
+		xlog(L_ERROR, "can't open %s for %sing", fname,
+				readonly ? "read" : "writ");
+		return NULL;
+	}
+	return fp;
+}
+
+struct rmtabent *
+getrmtabent(int log, long *pos)
+{
+	return fgetrmtabent(rmfp, log, pos);
+}
+
+struct rmtabent *
+fgetrmtabent(FILE *fp, int log, long *pos)
+{
+	static struct rmtabent	re;
+	char		*count, *host, *path, *c;
+	static char	buf[LINELEN];
+
+	errno = 0;
+	if (!fp)
+		return NULL;
+	do {
+		if (pos)
+			*pos = ftell (fp);
+		if (fgets(buf, sizeof(buf)-1, fp) == NULL)
+			return NULL;
+		host = buf;
+		if ((path = strchr(host, '\n')) != NULL)
+			*path = '\0';
+		if (!(path = strchr(host, ':'))) {
+			if (log)
+				xlog(L_ERROR, "malformed entry in rmtab file");
+			errno = EINVAL;
+			return NULL;
+		}
+		*path++ = '\0';
+		count = strchr(path, ':');
+		if (count) {
+			*count++ = '\0';
+			re.r_count = strtol (count, NULL, 0);
+		}
+		else
+			re.r_count = 1;
+	} while (0);
+
+	strncpy(re.r_client, host, sizeof (re.r_client) - 1);
+	re.r_client[sizeof (re.r_client) - 1] = '\0';
+	for (c = re.r_client; *c != '\0'; c++)
+		if (*c == IPV6_COLON)
+			*c = ':';
+
+	strncpy(re.r_path, path, sizeof (re.r_path) - 1);
+	re.r_path[sizeof (re.r_path) - 1] = '\0';
+
+	return &re;
+}
+
+void
+putrmtabent(struct rmtabent *rep, long *pos)
+{
+	fputrmtabent(rmfp, rep, pos);
+}
+
+void
+fputrmtabent(FILE *fp, struct rmtabent *rep, long *pos)
+{
+	static char	buf[LINELEN];
+	char		*c;
+
+	if (!fp || (pos && fseek (fp, *pos, SEEK_SET) != 0))
+		return;
+
+	/*
+	 * To avoid confusing the token parser in fgetrmtabent(),
+	 * convert colons in incoming IPv6 presentation addresses
+	 * to semicolons.
+	 */
+	if (strlen(rep->r_client) > sizeof(buf)) {
+		xlog(L_ERROR, "client name too large");
+		return;
+	}
+	strncpy(buf, rep->r_client, sizeof(buf));
+	for (c = buf; *c != '\0'; c++)
+		if (*c == ':')
+			*c = IPV6_COLON;
+
+	(void)fprintf(fp, "%s:%s:0x%.8x\n", buf, rep->r_path, rep->r_count);
+}
+
+void
+endrmtabent(void)
+{
+	fendrmtabent(rmfp);
+	rmfp = NULL;
+}
+
+void
+fendrmtabent(FILE *fp)
+{
+	if (fp)
+		fclose(fp);
+}
+
+void
+rewindrmtabent(void)
+{
+	if (rmfp)
+		rewind(rmfp);
+}
+
+void
+frewindrmtabent(FILE *fp)
+{
+	if (fp)
+		rewind (fp);
+}