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/* -*- Mode: C; c-basic-offset: 4; indent-tabs-mode: nil -*- */
/*
Copyright (C) 2016 Red Hat, Inc.
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
This library 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
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, see <http://www.gnu.org/licenses/>.
*/
#include <config.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <errno.h>
#include <unistd.h>
#include <common/log.h>
#include "red-stream.h"
#include "basic-event-loop.h"
static SpiceServer *server = NULL;
static int server_init(void)
{
SpiceCoreInterface *core = basic_event_loop_init();
server = spice_server_new();
return spice_server_init(server, core);
}
/*
* Based on code from Keith Packard:
* http://keithp.com/blogs/fd-passing/
*/
static ssize_t
sock_fd_read(int sock, void *buf, ssize_t bufsize, int *fd)
{
ssize_t size;
if (fd) {
struct msghdr msg;
struct iovec iov;
union {
struct cmsghdr cmsghdr;
char control[CMSG_SPACE(sizeof (int))];
} cmsgu;
struct cmsghdr *cmsg;
iov.iov_base = buf;
iov.iov_len = bufsize;
msg.msg_name = NULL;
msg.msg_namelen = 0;
msg.msg_iov = &iov;
msg.msg_iovlen = 1;
msg.msg_control = cmsgu.control;
msg.msg_controllen = sizeof(cmsgu.control);
msg.msg_flags = 0;
size = recvmsg(sock, &msg, 0);
if (size < 0) {
perror ("recvmsg");
exit(1);
}
cmsg = CMSG_FIRSTHDR(&msg);
if (cmsg && cmsg->cmsg_len == CMSG_LEN(sizeof(int))) {
if (cmsg->cmsg_level != SOL_SOCKET) {
fprintf(stderr, "invalid cmsg_level %d\n",
cmsg->cmsg_level);
exit(1);
}
if (cmsg->cmsg_type != SCM_RIGHTS) {
fprintf(stderr, "invalid cmsg_type %d\n",
cmsg->cmsg_type);
exit(1);
}
memcpy(fd, CMSG_DATA(cmsg), sizeof(*fd));
} else
*fd = -1;
} else {
size = read(sock, buf, bufsize);
if (size < 0) {
perror("read");
exit(1);
}
}
return size;
}
int main(int argc, char *argv[])
{
RedStream *st[2];
int sv[2];
int ret, fd = -1, stdin_fd = 0;
char c;
spice_return_val_if_fail(server_init() == 0, -1);
if (socketpair(AF_LOCAL, SOCK_STREAM, 0, sv) == -1) {
spice_error("socketpair failed %s", strerror(errno));
return -1;
}
st[0] = red_stream_new(server, sv[0]);
spice_assert(red_stream_is_plain_unix(st[0]));
st[1] = red_stream_new(server, sv[1]);
spice_assert(red_stream_is_plain_unix(st[1]));
/* send stdin, for the fun of it */
ret = red_stream_send_msgfds(st[0], &stdin_fd, 1);
spice_assert(ret == 1);
ret = sock_fd_read(sv[1], &c, 1, &fd);
spice_assert(c == '@');
spice_assert(ret == 1);
spice_assert(fd != -1);
close(fd);
/* send no fd behaviour */
ret = red_stream_send_msgfds(st[0], NULL, 0);
spice_assert(ret == 1);
ret = sock_fd_read(sv[1], &c, 1, &fd);
spice_assert(c == '@');
spice_assert(ret == 1);
spice_assert(fd == -1);
/* batch test */
ret = red_stream_send_msgfds(st[0], &stdin_fd, 1);
spice_assert(ret == 1);
ret = red_stream_send_msgfds(st[0], &stdin_fd, 1);
spice_assert(ret == 1);
ret = sock_fd_read(sv[1], &c, 1, &fd);
spice_assert(c == '@');
spice_assert(ret == 1);
spice_assert(fd != -1);
close(fd);
ret = sock_fd_read(sv[1], &c, 1, &fd);
spice_assert(c == '@');
spice_assert(ret == 1);
spice_assert(fd != -1);
close(fd);
red_stream_free(st[0]);
red_stream_free(st[1]);
return 0;
}
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