1 files changed, 90 insertions, 0 deletions
diff --git a/src/anvil/main.c b/src/anvil/main.c
new file mode 100644
index 0000000..7e4050b
--- /dev/null
+++ b/src/anvil/main.c
@@ -0,0 +1,90 @@
+/* Copyright (c) 2009-2018 Dovecot authors, see the included COPYING file */
+
+#include "common.h"
+#include "array.h"
+#include "env-util.h"
+#include "fdpass.h"
+#include "ioloop.h"
+#include "restrict-access.h"
+#include "master-service.h"
+#include "master-service-settings.h"
+#include "master-interface.h"
+#include "connect-limit.h"
+#include "penalty.h"
+#include "anvil-connection.h"
+
+#include <unistd.h>
+
+struct connect_limit *connect_limit;
+struct penalty *penalty;
+bool anvil_restarted;
+static struct io *log_fdpass_io;
+
+static void client_connected(struct master_service_connection *conn)
+{
+	bool master = conn->listen_fd == MASTER_LISTEN_FD_FIRST;
+
+	master_service_client_connection_accept(conn);
+	(void)anvil_connection_create(conn->fd, master, conn->fifo);
+}
+
+static void ATTR_NULL(1)
+log_fdpass_input(void *context ATTR_UNUSED)
+{
+	int fd;
+	char c;
+	ssize_t ret;
+
+	/* master wants us to replace the log fd */
+	ret = fd_read(MASTER_ANVIL_LOG_FDPASS_FD, &c, 1, &fd);
+	if (ret < 0)
+		i_error("fd_read(log fd) failed: %m");
+	else if (ret == 0) {
+		/* master died. lib-master should notice it soon. */
+		io_remove(&log_fdpass_io);
+	} else {
+		if (dup2(fd, STDERR_FILENO) < 0)
+			i_fatal("dup2(fd_read  log fd, stderr) failed: %m");
+		if (close(fd) < 0)
+			i_error("close(fd_read log fd) failed: %m");
+	}
+}
+
+int main(int argc, char *argv[])
+{
+	const enum master_service_flags service_flags =
+		MASTER_SERVICE_FLAG_DONT_SEND_STATS |
+		MASTER_SERVICE_FLAG_UPDATE_PROCTITLE;
+	const char *error;
+
+	master_service = master_service_init("anvil", service_flags,
+					     &argc, &argv, "");
+	if (master_getopt(master_service) > 0)
+		return FATAL_DEFAULT;
+	if (master_service_settings_read_simple(master_service,
+						NULL, &error) < 0)
+		i_fatal("Error reading configuration: %s", error);
+	master_service_init_log(master_service);
+
+	restrict_access_by_env(RESTRICT_ACCESS_FLAG_ALLOW_ROOT, NULL);
+	restrict_access_allow_coredumps(TRUE);
+	anvil_restarted = getenv("ANVIL_RESTARTED") != NULL;
+
+	/* delay dying until all of our clients are gone */
+	master_service_set_die_with_master(master_service, FALSE);
+
+	connect_limit = connect_limit_init();
+	penalty = penalty_init();
+	log_fdpass_io = io_add(MASTER_ANVIL_LOG_FDPASS_FD, IO_READ,
+			       log_fdpass_input, NULL);
+	master_service_init_finish(master_service);
+
+	master_service_run(master_service, client_connected);
+
+	io_remove(&log_fdpass_io);
+	penalty_deinit(&penalty);
+	connect_limit_deinit(&connect_limit);
+	anvil_connections_destroy_all();
+	master_service_deinit(&master_service);
+        return 0;
+}