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/*****************************************************************************
*
* evemu - Kernel device emulation
*
* Copyright (C) 2010 Henrik Rydberg <rydberg@euromail.se>
* Copyright (C) 2010 Canonical Ltd.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice (including the next
* paragraph) shall be included in all copies or substantial portions of the
* Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*
****************************************************************************/
#include "evemu.h"
#include <stdio.h>
#include <fcntl.h>
#include <string.h>
#define UINPUT_NODE "/dev/uinput"
#define MAX_EVENT_NODE 32
static void hold_device(const struct evemu_device *dev)
{
char node[256], data[256];
int fd, ret, i;
memset(node, 0, sizeof(node));
for (i = 0; i < MAX_EVENT_NODE; i++) {
char path[256], name[256];
sprintf(path, "/sys/class/input/event%d/device/name", i + 1);
memset(name, 0, sizeof(name));
fd = open(path, O_RDONLY);
if (fd < 0)
continue;
ret = read(fd, name, sizeof(name));
if (ret > 0)
name[ret - 1] = 0;
if (!strcmp(dev->name, name))
sprintf(node, "/dev/input/event%d", i + 1);
close(fd);
}
fd = open(node, O_RDONLY);
if (fd < 0)
return;
fprintf(stdout, "%s: %s\n", dev->name, node);
fflush(stdout);
while ((ret = read(fd, data, sizeof(data))) > 0);
close(fd);
}
static int evemu_device(FILE *fp)
{
struct evemu_device dev;
int ret, fd;
ret = evemu_read(&dev, fp);
if (ret <= 0)
return ret;
sprintf(dev.name, "evemu-%d", getpid());
fd = open(UINPUT_NODE, O_WRONLY);
if (fd < 0)
return fd;
ret = evemu_create(&dev, fd);
if (ret < 0)
return ret;
hold_device(&dev);
evemu_destroy(fd);
close(fd);
return 0;
}
int main(int argc, char *argv[])
{
FILE *fp;
int ret;
if (argc < 2) {
fprintf(stderr, "Usage: %s <dev.prop>\n", argv[0]);
return -1;
}
fp = fopen(argv[1], "r");
if (!fp) {
fprintf(stderr, "error: could not open file\n");
return -1;
}
if ((ret = evemu_device(fp))) {
fprintf(stderr, "error: could not create device: %d\n", ret);
return -1;
}
fclose(fp);
return 0;
}
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