Revert "moving smtpd to usr.sbin/smtpd to ease cherry-picking of upstream"

This reverts commit 90620a574d8824e5b2aa18709f2d5b5b6bb3cb38.

1 files changed, 104 insertions, 0 deletions

diff --git a/smtpd/forward.c b/smtpd/forward.c
new file mode 100644
index 00000000..7494c6ce
--- /dev/null
+++ b/smtpd/forward.c
@@ -0,0 +1,104 @@
+/*	$OpenBSD: forward.c,v 1.39 2015/12/28 22:08:30 jung Exp $	*/
+
+/*
+ * Copyright (c) 2008 Gilles Chehade <gilles@poolp.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 "includes.h"
+
+#include <sys/types.h>
+#include <sys/queue.h>
+#include <sys/tree.h>
+#include <sys/socket.h>
+#include <sys/stat.h>
+
+#include <ctype.h>
+#include <event.h>
+#include <imsg.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#ifdef HAVE_UTIL_H
+#include <util.h>
+#endif
+#ifdef HAVE_LIBUTIL_H
+#include <libutil.h>
+#endif
+#include <unistd.h>
+#include <limits.h>
+
+#include "smtpd.h"
+#include "log.h"
+
+#define	MAX_FORWARD_SIZE	(4 * 1024)
+#define	MAX_EXPAND_NODES	(100)
+
+int
+forwards_get(int fd, struct expand *expand)
+{
+	FILE	       *fp = NULL;
+	char	       *line = NULL;
+	size_t		len;
+	size_t		lineno;
+	size_t		save;
+	int		ret;
+	struct stat	sb;
+
+	ret = -1;
+	if (fstat(fd, &sb) == -1)
+		goto end;
+
+	/* if it's empty just pretend that no expansion took place */
+	if (sb.st_size == 0) {
+		log_info("info: forward file is empty");
+		ret = 0;
+		goto end;
+	}
+
+	/* over MAX_FORWARD_SIZE, temporarily fail */
+	if (sb.st_size >= MAX_FORWARD_SIZE) {
+		log_info("info: forward file exceeds max size");
+		goto end;
+	}
+
+	if ((fp = fdopen(fd, "r")) == NULL) {
+		log_warn("warn: fdopen failure in forwards_get()");
+		goto end;
+	}
+
+	lineno = 0;
+	save = expand->nb_nodes;
+	while ((line = fparseln(fp, &len, &lineno, NULL, 0)) != NULL) {
+		if (!expand_line(expand, line, 0)) {
+			log_info("info: parse error in forward file");
+			goto end;
+		}
+		if (expand->nb_nodes > MAX_EXPAND_NODES) {
+			log_info("info: forward file expanded too many nodes");
+			goto end;
+		}
+		free(line);
+	}
+
+	ret = expand->nb_nodes > save ? 1 : 0;
+
+end:
+	free(line);
+	if (fp)
+		fclose(fp);
+	else
+		close(fd);
+	return ret;
+}