--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/file.c	Tue Dec 06 13:51:55 2022 +0000
@@ -0,0 +1,53 @@
+/*
+ * Copyright (c) 2015 Sunil Nimmagadda <sunil@openbsd.org>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#include <sys/stat.h>
+
+#include <err.h>
+#include <fcntl.h>
+#include <stdio.h>
+
+#include "ftp.h"
+
+static FILE	*src_fp;
+
+struct url *
+file_get(struct url *url, off_t *offset, off_t *sz)
+{
+	struct stat	sb;
+	int		src_fd;
+
+	if ((src_fd = fd_request(url->path, O_RDONLY, NULL)) == -1)
+		err(1, "Can't open file %s", url->path);
+
+	if (fstat(src_fd, &sb) == 0)
+		*sz = sb.st_size;
+
+	if ((src_fp = fdopen(src_fd, "r")) == NULL)
+		err(1, "%s: fdopen", __func__);
+
+	if (*offset && fseeko(src_fp, *offset, SEEK_SET) == -1)
+		err(1, "%s: fseeko", __func__);
+
+	return url;
+}
+
+void
+file_save(struct url *url, FILE *dst_fp, off_t *offset)
+{
+	copy_file(dst_fp, src_fp, offset);
+	fclose(src_fp);
+}