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/*
* Copyright (C) 2012 Romain Perier <romain.perier@gmail.com>
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This 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 this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <sys/stat.h>
#include <sys/select.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <fcntl.h>
#include <unistd.h>
#include <linux/input.h>
#include <errno.h>
#include "common.h"
#define BUFFERING_EVENTS_QUEUE_SIZE EVENTS_QUEUE_SIZE
static uint32_t buffer[BUFFERING_EVENTS_QUEUE_SIZE * 2];
static struct input_event ev[BUFFERING_EVENTS_QUEUE_SIZE];
static void usage(char *progname)
{
fprintf(stderr, "Usage: %s <hostname> <port> <device1> [device2] ... [deviceN]\n", progname);
exit(1);
}
static int input_device_init(const char *device)
{
int indev_fd, grab = 1;
char *devname = NULL;
indev_fd = openx(device, O_RDONLY);
devname = malloc(64 * sizeof(char));
if (devname == NULL)
return indev_fd;
ioctlx(indev_fd, EVIOCGNAME(64), devname);
ioctlx(indev_fd, EVIOCGRAB, &grab);
printf("Capturing events for device %s\n", devname);
free(devname);
return indev_fd;
}
static int _connect(const char *hostname, uint16_t port)
{
struct sockaddr_in aidd_addr;
int sock_fd;
sock_fd = socketx(AF_INET, SOCK_STREAM, 0);
aidd_addr.sin_family = AF_INET;
inet_aton(hostname, &(aidd_addr.sin_addr));
aidd_addr.sin_port = htons(port);
if (connect(sock_fd, (struct sockaddr *)&aidd_addr, sizeof(struct sockaddr_in)) == -1) {
perror("aib");
exit(1);
}
return sock_fd;
}
static void send_event(int sock, struct input_event *ev)
{
int i = 0, j = 1;
bzero(buffer, sizeof(buffer));
for (i = 0; i < BUFFERING_EVENTS_QUEUE_SIZE; i++) {
buffer[j] = ev[i].type;
buffer[j] = htonl((buffer[j] << 16) | ev[i].code);
buffer[j+1] = htonl(ev[i].value);
j += 2;
if (is_ev_syn(ev + i))
break;
}
buffer[0] = htonl(j - 1);
send(sock, buffer, sizeof(uint32_t) * j, 0);
}
static void wait_evdev_input(int aibd_sock, int inputdev)
{
int i = 0;
while (1) {
read(inputdev, ev + i, sizeof(struct input_event));
D("[%lu.%04lu] type %u, code %u, value %d\n", ev[i].time.tv_sec, ev[i].time.tv_usec, ev[i].type, ev[i].code, ev[i].value);
if (ev[i].type == EV_MSC)
continue;
if (is_ev_syn(ev + i)) {
send_event(aibd_sock, ev);
bzero(ev, sizeof(struct input_event) * BUFFERING_EVENTS_QUEUE_SIZE);
break;
}
i = (i + 1) % BUFFERING_EVENTS_QUEUE_SIZE;
}
}
static void mainloop(int aibd_sock, char **devices, int len)
{
int i = 0, maxfd = 0, ret = 0, *inputdevs = NULL;
fd_set readfds;
inputdevs = mallocx(len * sizeof(int));
for (i = 0; i < len; i++) {
inputdevs[i] = input_device_init(devices[i]);
D("Registering %s for events monitoring with fd %u\n", devices[i], inputdevs[i]);
if (inputdevs[i] > maxfd)
maxfd = inputdevs[i];
}
while (1) {
FD_ZERO(&readfds);
for (i = 0; i < len; i++)
FD_SET(inputdevs[i], &readfds);
do {
ret = select(maxfd + 1, &readfds, NULL, NULL, NULL);
} while (ret < 0 && errno == EINTR);
for (i = 0; i < len; i++) {
if (FD_ISSET(inputdevs[i], &readfds)) {
D("Receiving data from fd %u\n", inputdevs[i]);
wait_evdev_input(aibd_sock, inputdevs[i]);
}
}
}
}
int main (int argc, char *argv[])
{
uint16_t port;
char *endptr = NULL;
int aibd_sock;
if (argc < 4)
usage(argv[0]);
port = strtoul(argv[2], &endptr, 10);
if (*endptr != '\0')
usage(argv[0]);
aibd_sock = _connect(argv[1], port);
mainloop(aibd_sock, argv + 3, argc - 3);
return 0;
}
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