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#define _GNU_SOURCE
#include <stdio.h>
#include <stdlib.h>
#include <stdbool.h>
#include <unistd.h>
#include <systemd/sd-bus.h>
#include <errno.h>
#include <linux/input.h>
#include "utils.h"
#include "shared.h"
#include "rcm-server-main.h"
#include "rcm-server-evdev.h"
#include "rcm-server-keymap.h"
struct rc_scancode {
__u16 protocol;
__u16 reserved[3];
__u64 scancode;
};
#define INPUT_KEYMAP_BY_INDEX (1 << 0)
struct rc_keymap_entry {
__u8 flags;
__u8 len;
__u16 index;
__u32 keycode;
union {
struct rc_scancode rc;
__u8 scancode[32];
} u;
char end[];
};
#define RKE_SIZE (sizeof(struct rc_scancode))
const char *
evdev_guess_protocol(struct device *device, uint64_t scancode, uint32_t keycode)
{
struct rc_keymap_entry rke;
unsigned i;
if (!device || device->evdev_fd < 0)
return NULL;
for (i = 0; ; i++) {
memset(&rke, 0, sizeof(rke));
rke.len = RKE_SIZE;
rke.index = i;
rke.flags = INPUT_KEYMAP_BY_INDEX;
if (ioctl(device->evdev_fd, EVIOCGKEYCODE_V2, &rke))
break;
if (rke.u.rc.scancode != scancode)
continue;
if (rke.keycode != keycode)
continue;
if (rke.u.rc.protocol > ARRAY_SIZE(rc_protocols))
return NULL;
return rc_protocols[rke.u.rc.protocol];
}
return NULL;
}
static int
evdev_clear_keymap(struct device *device)
{
struct rc_keymap_entry rke;
unsigned count = 0;
int r = 0;
printf("Clearing keymap...");
while (true) {
memset(&rke, 0, sizeof(rke));
rke.len = RKE_SIZE;
rke.index = 0;
rke.flags = INPUT_KEYMAP_BY_INDEX;
if (ioctl(device->evdev_fd, EVIOCGKEYCODE_V2, &rke)) {
printf("done (%u entries removed)\n", count);
break;
}
/*
printf(" Clearing 0x%08llX (0x%02X) to 0x%02X\n",
rke.u.rc.scancode, rke.u.rc.protocol, rke.keycode);
*/
rke.keycode = KEY_RESERVED;
if (ioctl(device->evdev_fd, EVIOCSKEYCODE_V2, &rke)) {
r = -errno;
printf("failed (%s)\n", strerror(errno));
break;
}
count++;
}
return r;
}
static void
set_keycode_new(struct device *device, __u16 protocol, __u64 scancode, __u32 keycode)
{
struct rc_keymap_entry rke;
memset(&rke, 0, sizeof(rke));
rke.len = RKE_SIZE;
rke.u.rc.protocol = protocol;
rke.u.rc.scancode = scancode;
rke.keycode = keycode;
printf("Setting keycode (new ioctl) 0x%08llX (0x%02X) to 0x%02X\n",
rke.u.rc.scancode, rke.u.rc.protocol, rke.keycode);
if (ioctl(device->evdev_fd, EVIOCSKEYCODE_V2, &rke)) {
printf("Unable to call SETKEYCODE2 ioctl\n");
exit(EXIT_FAILURE);
}
}
static int
evdev_set_keymap(struct device *device, struct keymap *keymap)
{
unsigned i;
printf("\tSetting up keymap: %s\n", keymap->name);
for (i = 0; i < keymap->keycode_count; i++)
set_keycode_new(device,
keymap->keycodes[i].protocol,
keymap->keycodes[i].scancode,
keymap->keycodes[i].lik->value);
printf("\tDone: %u entries added\n", i);
return 0;
}
int
evdev_setup(struct device *device)
{
int r;
struct keymap *keymap;
if (!device || device->evdev_fd < 0)
return -EINVAL;
printf("Performing evdev setup for device %s\n", device->path);
r = evdev_clear_keymap(device);
if (r < 0)
return r;
list_for_each_entry(keymap, &device->keymaps, list)
r = evdev_set_keymap(device, keymap);
return r;
}
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