Rename android_ctrl_sock.c to android.c

1 files changed, 0 insertions, 217 deletions

diff --git a/src/android_ctrl_sock.c b/src/android_ctrl_sock.c
deleted file mode 100644
index c0620c8..0000000
--- a/src/android_ctrl_sock.c
+++ /dev/null
@@ -1,217 +0,0 @@
-/***************************************************************************
- * libancillary - black magic on Unix domain sockets
- * (C) Nicolas George
- ***************************************************************************/
-
-/*
- * fastd Android port
- * Copyright (c) 2014-2015, Haofeng "Rick" Lei <ricklei@gmail.com>
- * All rights reserved.
- */
-
-/*
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- *  1. Redistributions of source code must retain the above copyright notice,
- *     this list of conditions and the following disclaimer.
- *  2. Redistributions in binary form must reproduce the above copyright
- *     notice, this list of conditions and the following disclaimer in the
- *     documentation and/or other materials provided with the distribution.
- *  3. The name of the author may not be used to endorse or promote products
- *     derived from this software without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
- * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
- * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
- * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
- * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
- * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
- * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
- * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
- * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-/* libancillary code from:
- *   http://www.normalesup.org/~george/comp/libancillary/
- * with minor indent/style adjusts to fit fastd project
- */
-/* vim: set noexpandtab ts=8 sw=8 sts=8 */
-
-/**
-   \file
-
-   Android specific methods for communicating with GUI
-*/
-
-#ifdef __ANDROID__
-
-#include "fastd.h"
-
-#include <sys/un.h>
-
-
-/** declare a work buffer for sending/receiving \e n handles */
-#define ANCIL_FD_BUFFER(n) \
-	struct { \
-		struct cmsghdr h; \
-		int fd[n]; \
-	}
-
-/** receive \e n_fds handles from unix domain socket \e sock and store in \e fds  */
-static int ancil_recv_fds_with_buffer(int sock, int *fds, unsigned n_fds, void *buffer) {
-	struct msghdr msghdr;
-	char nothing;
-	struct iovec nothing_ptr;
-	struct cmsghdr *cmsg;
-	int i;
-
-	nothing_ptr.iov_base = &nothing;
-	nothing_ptr.iov_len = 1;
-	msghdr.msg_name = NULL;
-	msghdr.msg_namelen = 0;
-	msghdr.msg_iov = &nothing_ptr;
-	msghdr.msg_iovlen = 1;
-	msghdr.msg_flags = 0;
-	msghdr.msg_control = buffer;
-	msghdr.msg_controllen = sizeof(struct cmsghdr) + sizeof(int) * n_fds;
-	cmsg = CMSG_FIRSTHDR(&msghdr);
-	cmsg->cmsg_len = msghdr.msg_controllen;
-	cmsg->cmsg_level = SOL_SOCKET;
-	cmsg->cmsg_type = SCM_RIGHTS;
-	for (i = 0; i < n_fds; i++) {
-		((int *)CMSG_DATA(cmsg))[i] = -1;
-	}
-
-	if (recvmsg(sock, &msghdr, 0) < 0) {
-		return(-1);
-	}
-	for (i = 0; i < n_fds; i++) {
-		fds[i] = ((int *)CMSG_DATA(cmsg))[i];
-	}
-	n_fds = (cmsg->cmsg_len - sizeof(struct cmsghdr)) / sizeof(int);
-	return n_fds;
-}
-
-/** shortcut for receiving only one \e fd from \e sock */
-static int ancil_recv_fd(int sock, int *fd) {
-	ANCIL_FD_BUFFER(1) buffer;
-
-	return ancil_recv_fds_with_buffer(sock, fd, 1, &buffer) == 1 ? 0 : -1;
-}
-
-/** send \e n_fds handles in \e fds to unix domain socket \e sock */
-static int ancil_send_fds_with_buffer(int sock, const int *fds, unsigned n_fds, void *buffer) {
-	struct msghdr msghdr;
-	char nothing = '!';
-	struct iovec nothing_ptr;
-	struct cmsghdr *cmsg;
-	int i;
-
-	nothing_ptr.iov_base = &nothing;
-	nothing_ptr.iov_len = 1;
-	msghdr.msg_name = NULL;
-	msghdr.msg_namelen = 0;
-	msghdr.msg_iov = &nothing_ptr;
-	msghdr.msg_iovlen = 1;
-	msghdr.msg_flags = 0;
-	msghdr.msg_control = buffer;
-	msghdr.msg_controllen = sizeof(struct cmsghdr) + sizeof(int) * n_fds;
-	cmsg = CMSG_FIRSTHDR(&msghdr);
-	cmsg->cmsg_len = msghdr.msg_controllen;
-	cmsg->cmsg_level = SOL_SOCKET;
-	cmsg->cmsg_type = SCM_RIGHTS;
-	for (i = 0; i < n_fds; i++) {
-		((int *)CMSG_DATA(cmsg))[i] = fds[i];
-	}
-	return sendmsg(sock, &msghdr, 0) >= 0 ? 0 : -1;
-}
-
-/** shortcut for sending only one \e fd to \e sock */
-static int ancil_send_fd(int sock, int fd)
-{
-	ANCIL_FD_BUFFER(1) buffer;
-
-	return ancil_send_fds_with_buffer(sock, &fd, 1, &buffer);
-}
-
-/*
- * libancillary end
- */
-
-
-/** name of unix domain socket for communication with Android FastdVpnService */
-#define CTRL_SOCK_NAME "fastd_tun_sock"
-
-/** message sent by Android FastdVpnService to indicate successful protection of socket */
-#define PROTECT_OK 'X'
-
-/** message sent by Android FastdVpnService when protecting socket failed */
-#define PROTECT_ERROR 'E'
-
-/** establish the unix domain socket with Android GUI */
-static void init_ctrl_sock(void) {
-	/* Must keep consistent with FastdVpnService */
-	struct sockaddr_un addr;
-
-	if ((ctx.android_ctrl_sock_fd = socket(AF_UNIX, SOCK_STREAM, 0)) == -1) {
-		exit_errno("could not create unix domain socket");
-	}
-
-	memset(&addr, 0, sizeof(addr));
-	addr.sun_family = AF_UNIX;
-	addr.sun_path[0] = 0;     /* Linux's abstract unix domain socket name */
-	strncpy(addr.sun_path + 1, CTRL_SOCK_NAME, sizeof(addr.sun_path) - 2);
-	int socklen = offsetof(struct sockaddr_un, sun_path) + strlen(CTRL_SOCK_NAME) + 1;
-
-	if (connect(ctx.android_ctrl_sock_fd, (struct sockaddr*)&addr, socklen) == -1) {
-		exit_errno("could not connect to Android LocalServerSocket");
-	}
-}
-
-/** receive TUN fd from Android GUI; this is the only way to open TUN device on non-rooted Android */
-int fastd_android_receive_tunfd(void) {
-	init_ctrl_sock();
-
-	int handle;
-	if (ancil_recv_fd(ctx.android_ctrl_sock_fd, &handle)) {
-		pr_error("could not receive TUN handle from Android");
-		return -1;
-	}
-
-	pr_debug("received fd: %u", handle);
-
-	return handle;
-}
-
-/** send fastd pid to Android GUI for later signal sending (HUP, TERM etc) */
-void fastd_android_send_pid(void) {
-	char pid[20];
-	snprintf(pid, sizeof(pid), "%u", (unsigned)getpid());
-	if (write(ctx.android_ctrl_sock_fd, pid, strlen(pid)) != strlen(pid)) {
-		exit_errno("send pid");
-	}
-}
-
-/** report \e fd to Android GUI to be protected (i.e. not to be routed via TUN) */
-bool fastd_android_protect_socket(int fd) {
-	if (!conf.android_integration) {
-		/* rooted/non-GUI mode */
-		return true;
-	}
-
-	pr_debug("sending fd to protect");
-	if (ancil_send_fd(ctx.android_ctrl_sock_fd, fd) == -1) {
-		exit_errno("could not send handle to Android for protecting");
-	}
-
-	char buf[20];
-	if (read(ctx.android_ctrl_sock_fd, buf, sizeof(buf)) == -1) {
-		exit_errno("read ack");
-	}
-	return buf[0] == PROTECT_OK;
-}
-
-#endif /* __ANDROID__ */
-