contrib/fwd: initial IPC work

1 files changed, 98 insertions, 0 deletions

diff --git a/contrib/fwd/src/fwd_ipc.c b/contrib/fwd/src/fwd_ipc.c
new file mode 100644
index 0000000000..83eb7d8869
--- /dev/null
+++ b/contrib/fwd/src/fwd_ipc.c
@@ -0,0 +1,98 @@
+/*
+ * fwd - OpenWrt firewall daemon - unix domain socket parts
+ *
+ *   Copyright (C) 2009 Jo-Philipp Wich <xm@subsignal.org>
+ *
+ * The fwd program is free software: you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License version 2
+ * as published by the Free Software Foundation.
+ *
+ * The fwd program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+ * See the GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with the fwd program. If not, see http://www.gnu.org/licenses/.
+ */
+
+
+#include "fwd.h"
+#include "fwd_ipc.h"
+
+
+int fwd_ipc_listen(void)
+{
+	int fd;
+	struct sockaddr_un addr;
+
+	if( (fd = socket(AF_UNIX, SOCK_STREAM, 0)) < 0 )
+		fwd_fatal("Cannot create AF_UNIX socket: %m");
+
+	memset(&addr, 0, sizeof(struct sockaddr_un));
+	strcpy(addr.sun_path, FWD_SOCKET_PATH);
+	addr.sun_family = AF_UNIX;
+
+	unlink(FWD_SOCKET_PATH);
+
+	if( bind(fd, (struct sockaddr *)&addr, sizeof(struct sockaddr_un)) < 0 )
+		fwd_fatal("Cannot bind AF_UNIX socket: %m");
+
+	if( listen(fd, 1) < 0 )
+		fwd_fatal("Cannot listen on AF_UNIX socket: %m");
+
+	//fcntl(fd, F_SETFL, O_NONBLOCK);
+
+	return fd;
+}
+
+int fwd_ipc_accept(int fd)
+{
+	return accept(fd, NULL, NULL);
+}
+
+int fwd_ipc_connect(void)
+{
+	int fd;
+	struct sockaddr_un addr;
+
+	if( (fd = socket(AF_UNIX, SOCK_STREAM, 0)) < 0 )
+		fwd_fatal("Cannot create AF_UNIX socket: %m");
+
+	memset(&addr, 0, sizeof(struct sockaddr_un));
+	strcpy(addr.sun_path, FWD_SOCKET_PATH);
+	addr.sun_family = AF_UNIX;
+
+	if( connect(fd, (struct sockaddr *)&addr, sizeof(struct sockaddr_un)) < 0 )
+		fwd_fatal("Cannot connect AF_UNIX socket: %m");
+
+	fcntl(fd, F_SETFL, O_NONBLOCK);
+
+	return fd;
+}
+
+int fwd_ipc_recvmsg(int fd, void *buf, int len)
+{
+	return recv(fd, buf, len, 0);
+}
+
+int fwd_ipc_sendmsg(int fd, void *buf, int len)
+{
+	return send(fd, buf, len, 0);
+}
+
+void fwd_ipc_shutdown(int fd)
+{
+	shutdown(fd, SHUT_RDWR);
+	close(fd);
+}
+
+int fwd_ipc_sendtype(int fd, enum fwd_ipc_msgtype type)
+{
+	struct fwd_ipc_msg msg;
+
+	memset(&msg, 0, sizeof(struct fwd_ipc_msg));
+	msg.type = type;
+
+	return fwd_ipc_sendmsg(fd, &msg, sizeof(struct fwd_ipc_msg));
+}