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kbdusb.c
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kbdusb.c
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#include <stdio.h>
#include <asm-generic/errno-base.h>
#include <string.h>
#include <linux/uinput.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <stdlib.h>
#include <unistd.h>
#define DEBUG 0
/* #define CHECK_BIT(var,pos) ((var) & (1<<(pos))) */
#define TEST_BIT(var,bitval) ((var & bitval) == bitval)
/*int mapshiftkey(unsigned char keypressed) {
2 = shift
* 1 = ctrl
* 4 = alt
* 8 = super
* first = right
* second = left
*/
/* case 0x: keysent = KEY_LEFTSHIFT; break;
case 0x: keysent = KEY_RIGHTSHIFT; break;
case 0x: keysent = KEY_LEFTALT; break;
case 0x: keysent = KEY_RIGHTALT; break;
case 0x: keysent = KEY_RIGHTCTRL; break;
}*/
int mapkey(unsigned char keypressed) {
if (DEBUG) printf("mapkey keypressed=%i, ",keypressed);
int keysent = 0;
switch (keypressed) {
case 0x04: keysent = KEY_A; break;
case 0x05: keysent = KEY_B; break;
case 0x06: keysent = KEY_C; break;
case 0x07: keysent = KEY_D; break;
case 0x08: keysent = KEY_E; break;
case 0x09: keysent = KEY_F; break;
case 0x0a: keysent = KEY_G; break;
case 0x0b: keysent = KEY_H; break;
case 0x0c: keysent = KEY_I; break;
case 0x0d: keysent = KEY_J; break;
case 0x0e: keysent = KEY_K; break;
case 0x0f: keysent = KEY_L; break;
case 0x10: keysent = KEY_M; break;
case 0x11: keysent = KEY_N; break;
case 0x12: keysent = KEY_O; break;
case 0x13: keysent = KEY_P; break;
case 0x14: keysent = KEY_Q; break;
case 0x15: keysent = KEY_R; break;
case 0x16: keysent = KEY_S; break;
case 0x17: keysent = KEY_T; break;
case 0x18: keysent = KEY_U; break;
case 0x19: keysent = KEY_V; break;
case 0x1a: keysent = KEY_W; break;
case 0x1b: keysent = KEY_X; break;
case 0x1c: keysent = KEY_Y; break;
case 0x1d: keysent = KEY_Z; break;
case 0x1e: keysent = KEY_1; break;
case 0x1f: keysent = KEY_2; break;
case 0x20: keysent = KEY_3; break;
case 0x21: keysent = KEY_4; break;
case 0x22: keysent = KEY_5; break;
case 0x23: keysent = KEY_6; break;
case 0x24: keysent = KEY_7; break;
case 0x25: keysent = KEY_8; break;
case 0x26: keysent = KEY_9; break;
case 0x27: keysent = KEY_0; break;
case 0x29: keysent = KEY_ESC; break;
case 0x2d: keysent = KEY_MINUS; break;
case 0x2e: keysent = KEY_EQUAL; break;
case 0x2a: keysent = KEY_BACKSPACE; break;
case 0x2b: keysent = KEY_TAB; break;
case 0x2f: keysent = KEY_LEFTBRACE; break;
case 0x30: keysent = KEY_RIGHTBRACE; break;
case 0x28: keysent = KEY_ENTER; break;
case 0x33: keysent = KEY_SEMICOLON; break;
case 0x34: keysent = KEY_APOSTROPHE; break;
case 0x35: keysent = KEY_GRAVE; break;
case 0x32: keysent = KEY_BACKSLASH; break;
case 0x36: keysent = KEY_COMMA; break;
case 0x37: keysent = KEY_DOT; break;
case 0x38: keysent = KEY_SLASH; break;
case 0x55: keysent = KEY_KPASTERISK; break;
case 0x2c: keysent = KEY_SPACE; break;
case 0x39: keysent = KEY_CAPSLOCK; break;
case 0x3a: keysent = KEY_F1; break;
case 0x3b: keysent = KEY_F2; break;
case 0x3c: keysent = KEY_F3; break;
case 0x3d: keysent = KEY_F4; break;
case 0x3e: keysent = KEY_F5; break;
case 0x3f: keysent = KEY_F6; break;
case 0x40: keysent = KEY_F7; break;
case 0x41: keysent = KEY_F8; break;
case 0x42: keysent = KEY_F9; break;
case 0x43: keysent = KEY_F10; break;
case 0x44: keysent = KEY_F11; break;
case 0x45: keysent = KEY_F12; break;
case 0x53: keysent = KEY_NUMLOCK; break;
case 0x47: keysent = KEY_SCROLLLOCK; break;
case 0x5f: keysent = KEY_KP7; break;
case 0x60: keysent = KEY_KP8; break;
case 0x61: keysent = KEY_KP9; break;
case 0x56: keysent = KEY_KPMINUS; break;
case 0x5c: keysent = KEY_KP4; break;
case 0x5d: keysent = KEY_KP5; break;
case 0x5e: keysent = KEY_KP6; break;
case 0x57: keysent = KEY_KPPLUS; break;
case 0x59: keysent = KEY_KP1; break;
case 0x5a: keysent = KEY_KP2; break;
case 0x5b: keysent = KEY_KP3; break;
case 0x62: keysent = KEY_KP0; break;
case 0x63: keysent = KEY_KPDOT; break;
case 0x58: keysent = KEY_KPENTER; break;
case 0x54: keysent = KEY_KPSLASH; break;
case 0x46: keysent = KEY_SYSRQ; break;
case 0x4a: keysent = KEY_HOME; break;
case 0x52: keysent = KEY_UP; break;
case 0x4b: keysent = KEY_PAGEUP; break;
case 0x50: keysent = KEY_LEFT; break;
case 0x4f: keysent = KEY_RIGHT; break;
case 0x4d: keysent = KEY_END; break;
case 0x51: keysent = KEY_DOWN; break;
case 0x4e: keysent = KEY_PAGEDOWN; break;
case 0x49: keysent = KEY_INSERT; break;
case 0x4c: keysent = KEY_DELETE; break;
case 0x48: keysent = KEY_PAUSE; break;
case 0x64: keysent = KEY_102ND; break;
default:
keysent = 0;
}
if (DEBUG) printf("mapkey keysent=%i\n",keysent);
return keysent;
}
int main() {
int ret;
unsigned char buffer[80];
unsigned char keypressed[8];
unsigned char keypressed_prec[8];
int r;
ssize_t cnt;
/* usb_reset(lenovo_combo); */
struct input_event ev;
int fd = open("/dev/uinput", O_WRONLY | O_NONBLOCK | O_DSYNC);
ret = ioctl(fd, UI_SET_EVBIT, EV_KEY);
ret = ioctl(fd, UI_SET_EVBIT, EV_SYN);
ret = ioctl(fd, UI_SET_KEYBIT, KEY_A); /* Auth KEY_A */
ret = ioctl(fd, UI_SET_KEYBIT, KEY_B); /* Auth KEY_B */
ret = ioctl(fd, UI_SET_KEYBIT, KEY_C); /* Auth KEY_C */
ret = ioctl(fd, UI_SET_KEYBIT, KEY_D); /* Auth KEY_D */
ret = ioctl(fd, UI_SET_KEYBIT, KEY_E); /* Auth KEY_E */
ret = ioctl(fd, UI_SET_KEYBIT, KEY_F); /* Auth KEY_F */
ret = ioctl(fd, UI_SET_KEYBIT, KEY_G); /* Auth KEY_G */
ret = ioctl(fd, UI_SET_KEYBIT, KEY_H); /* Auth KEY_H */
ret = ioctl(fd, UI_SET_KEYBIT, KEY_I); /* Auth KEY_I */
ret = ioctl(fd, UI_SET_KEYBIT, KEY_J); /* Auth KEY_J */
ret = ioctl(fd, UI_SET_KEYBIT, KEY_K); /* Auth KEY_K */
ret = ioctl(fd, UI_SET_KEYBIT, KEY_L); /* Auth KEY_L */
ret = ioctl(fd, UI_SET_KEYBIT, KEY_M); /* Auth KEY_M */
ret = ioctl(fd, UI_SET_KEYBIT, KEY_N); /* Auth KEY_N */
ret = ioctl(fd, UI_SET_KEYBIT, KEY_O); /* Auth KEY_O */
ret = ioctl(fd, UI_SET_KEYBIT, KEY_P); /* Auth KEY_P */
ret = ioctl(fd, UI_SET_KEYBIT, KEY_Q); /* Auth KEY_Q */
ret = ioctl(fd, UI_SET_KEYBIT, KEY_R); /* Auth KEY_R */
ret = ioctl(fd, UI_SET_KEYBIT, KEY_S); /* Auth KEY_S */
ret = ioctl(fd, UI_SET_KEYBIT, KEY_T); /* Auth KEY_T */
ret = ioctl(fd, UI_SET_KEYBIT, KEY_U); /* Auth KEY_U */
ret = ioctl(fd, UI_SET_KEYBIT, KEY_V); /* Auth KEY_V */
ret = ioctl(fd, UI_SET_KEYBIT, KEY_W); /* Auth KEY_W */
ret = ioctl(fd, UI_SET_KEYBIT, KEY_X); /* Auth KEY_X */
ret = ioctl(fd, UI_SET_KEYBIT, KEY_Y); /* Auth KEY_Y */
ret = ioctl(fd, UI_SET_KEYBIT, KEY_Z); /* Auth KEY_Z */
ret = ioctl(fd, UI_SET_KEYBIT, KEY_0);
ret = ioctl(fd, UI_SET_KEYBIT, KEY_1);
ret = ioctl(fd, UI_SET_KEYBIT, KEY_2);
ret = ioctl(fd, UI_SET_KEYBIT, KEY_3);
ret = ioctl(fd, UI_SET_KEYBIT, KEY_4);
ret = ioctl(fd, UI_SET_KEYBIT, KEY_5);
ret = ioctl(fd, UI_SET_KEYBIT, KEY_6);
ret = ioctl(fd, UI_SET_KEYBIT, KEY_7);
ret = ioctl(fd, UI_SET_KEYBIT, KEY_8);
ret = ioctl(fd, UI_SET_KEYBIT, KEY_9);
ret = ioctl(fd, UI_SET_KEYBIT, KEY_ESC);
ret = ioctl(fd, UI_SET_KEYBIT, KEY_MINUS);
ret = ioctl(fd, UI_SET_KEYBIT, KEY_EQUAL);
ret = ioctl(fd, UI_SET_KEYBIT, KEY_BACKSPACE);
ret = ioctl(fd, UI_SET_KEYBIT, KEY_TAB);
ret = ioctl(fd, UI_SET_KEYBIT, KEY_LEFTBRACE);
ret = ioctl(fd, UI_SET_KEYBIT, KEY_RIGHTBRACE);
ret = ioctl(fd, UI_SET_KEYBIT, KEY_ENTER);
ret = ioctl(fd, UI_SET_KEYBIT, KEY_SEMICOLON);
ret = ioctl(fd, UI_SET_KEYBIT, KEY_APOSTROPHE);
ret = ioctl(fd, UI_SET_KEYBIT, KEY_GRAVE);
ret = ioctl(fd, UI_SET_KEYBIT, KEY_LEFTSHIFT);
ret = ioctl(fd, UI_SET_KEYBIT, KEY_BACKSLASH);
ret = ioctl(fd, UI_SET_KEYBIT, KEY_COMMA);
ret = ioctl(fd, UI_SET_KEYBIT, KEY_DOT);
ret = ioctl(fd, UI_SET_KEYBIT, KEY_SLASH);
ret = ioctl(fd, UI_SET_KEYBIT, KEY_RIGHTSHIFT);
ret = ioctl(fd, UI_SET_KEYBIT, KEY_KPASTERISK);
ret = ioctl(fd, UI_SET_KEYBIT, KEY_LEFTALT);
ret = ioctl(fd, UI_SET_KEYBIT, KEY_SPACE);
ret = ioctl(fd, UI_SET_KEYBIT, KEY_CAPSLOCK);
ret = ioctl(fd, UI_SET_KEYBIT, KEY_F1);
ret = ioctl(fd, UI_SET_KEYBIT, KEY_F2);
ret = ioctl(fd, UI_SET_KEYBIT, KEY_F3);
ret = ioctl(fd, UI_SET_KEYBIT, KEY_F4);
ret = ioctl(fd, UI_SET_KEYBIT, KEY_F5);
ret = ioctl(fd, UI_SET_KEYBIT, KEY_F6);
ret = ioctl(fd, UI_SET_KEYBIT, KEY_F7);
ret = ioctl(fd, UI_SET_KEYBIT, KEY_F8);
ret = ioctl(fd, UI_SET_KEYBIT, KEY_F9);
ret = ioctl(fd, UI_SET_KEYBIT, KEY_F10);
ret = ioctl(fd, UI_SET_KEYBIT, KEY_F11);
ret = ioctl(fd, UI_SET_KEYBIT, KEY_F12);
ret = ioctl(fd, UI_SET_KEYBIT, KEY_NUMLOCK);
ret = ioctl(fd, UI_SET_KEYBIT, KEY_SCROLLLOCK);
ret = ioctl(fd, UI_SET_KEYBIT, KEY_KP7);
ret = ioctl(fd, UI_SET_KEYBIT, KEY_KP8);
ret = ioctl(fd, UI_SET_KEYBIT, KEY_KP9);
ret = ioctl(fd, UI_SET_KEYBIT, KEY_KPMINUS);
ret = ioctl(fd, UI_SET_KEYBIT, KEY_KP4);
ret = ioctl(fd, UI_SET_KEYBIT, KEY_KP5);
ret = ioctl(fd, UI_SET_KEYBIT, KEY_KP6);
ret = ioctl(fd, UI_SET_KEYBIT, KEY_KPPLUS);
ret = ioctl(fd, UI_SET_KEYBIT, KEY_KP1);
ret = ioctl(fd, UI_SET_KEYBIT, KEY_KP2);
ret = ioctl(fd, UI_SET_KEYBIT, KEY_KP3);
ret = ioctl(fd, UI_SET_KEYBIT, KEY_KP0);
ret = ioctl(fd, UI_SET_KEYBIT, KEY_KPDOT);
ret = ioctl(fd, UI_SET_KEYBIT, KEY_KPENTER);
ret = ioctl(fd, UI_SET_KEYBIT, KEY_RIGHTCTRL);
ret = ioctl(fd, UI_SET_KEYBIT, KEY_LEFTCTRL);
ret = ioctl(fd, UI_SET_KEYBIT, KEY_KPSLASH);
ret = ioctl(fd, UI_SET_KEYBIT, KEY_SYSRQ);
ret = ioctl(fd, UI_SET_KEYBIT, KEY_RIGHTALT);
ret = ioctl(fd, UI_SET_KEYBIT, KEY_HOME);
ret = ioctl(fd, UI_SET_KEYBIT, KEY_UP);
ret = ioctl(fd, UI_SET_KEYBIT, KEY_PAGEUP);
ret = ioctl(fd, UI_SET_KEYBIT, KEY_LEFT);
ret = ioctl(fd, UI_SET_KEYBIT, KEY_RIGHT);
ret = ioctl(fd, UI_SET_KEYBIT, KEY_END);
ret = ioctl(fd, UI_SET_KEYBIT, KEY_DOWN);
ret = ioctl(fd, UI_SET_KEYBIT, KEY_PAGEDOWN);
ret = ioctl(fd, UI_SET_KEYBIT, KEY_INSERT);
ret = ioctl(fd, UI_SET_KEYBIT, KEY_DELETE);
ret = ioctl(fd, UI_SET_KEYBIT, KEY_MUTE);
ret = ioctl(fd, UI_SET_KEYBIT, KEY_VOLUMEDOWN);
ret = ioctl(fd, UI_SET_KEYBIT, KEY_VOLUMEUP);
ret = ioctl(fd, UI_SET_KEYBIT, KEY_CALC);
ret = ioctl(fd, UI_SET_KEYBIT, KEY_COPY);
ret = ioctl(fd, UI_SET_KEYBIT, KEY_102ND);
struct uinput_user_dev uidev;
memset(&uidev, 0, sizeof(uidev));
snprintf(uidev.name, UINPUT_MAX_NAME_SIZE, "uinput-sample");
uidev.id.bustype = BUS_USB;
uidev.id.vendor = 0x1234;
uidev.id.product = 0xfedc;
uidev.id.version = 1;
ret = write(fd, &uidev, sizeof(uidev));
ret = ioctl(fd, UI_DEV_CREATE);
if (DEBUG) printf("uinput all set\n");
memset(&buffer, 0, 80);
FILE *in;
in = fopen("/dev/stdin","r");
if (DEBUG) printf("stdin is open\n");
int bytes_read;
while(fgets(buffer,79,in)) {
/* printf("Read %i bytes\n",bytes_read); */
if (DEBUG) printf("read: %s",buffer);
char bytes_reported[2];
strncpy(bytes_reported,buffer,1);
bytes_reported[2] = 0;
int ibytes_reported = atoi(bytes_reported);
if (DEBUG) printf("Num bytes reported: %i\n", ibytes_reported);
if (ibytes_reported == 9) { /* a regular key, 8 bytes + 0x71 */
/* start at 2 to skip length and = */
for(int i = 2; i < ibytes_reported*2; i += 2) {
char c1[2],c2[2];
c1[0]=buffer[i];c2[0]=buffer[i+1];
c1[1]=0;c2[1]=0;
keypressed[i/2-1] = (unsigned char) strtol(c1,NULL,16)*16 + strtol(c2,NULL,16);
if (DEBUG) printf("keypressed[%i]: %i\n",i/2-1,keypressed[i/2-1]);
}
/* what changed? */
/* special keys */
if (DEBUG) printf("keypressed_prec[0]=%i keypressed[0]=%i\n",keypressed_prec[0],keypressed[0]);
if (DEBUG) printf("bit 5 is set in keypressed[0] = %i\n",TEST_BIT(keypressed[0],32));
if (keypressed_prec[0] != keypressed[0]) {
/* released */
if (TEST_BIT(keypressed_prec[0],1) && ! TEST_BIT(keypressed[0],1)) {
/* left ctrl key is released */
if (DEBUG) printf("left ctrl is released\n");
memset(&ev, 0, sizeof(ev));
ev.type = EV_KEY;
ev.value = 0;
ev.code = KEY_LEFTCTRL;
ret = write(fd, &ev, sizeof(ev));
}
if (TEST_BIT(keypressed_prec[0],16) && ! TEST_BIT(keypressed[0],16)) {
/* right ctrl key is released */
if (DEBUG) printf("right ctrl is released\n");
memset(&ev, 0, sizeof(ev));
ev.type = EV_KEY;
ev.value = 0;
ev.code = KEY_RIGHTCTRL;
ret = write(fd, &ev, sizeof(ev));
}
if (TEST_BIT(keypressed_prec[0],2) && ! TEST_BIT(keypressed[0],2)) {
/* left shift key is released */
if (DEBUG) printf("left shift is released\n");
memset(&ev, 0, sizeof(ev));
ev.type = EV_KEY;
ev.value = 0;
ev.code = KEY_LEFTSHIFT;
ret = write(fd, &ev, sizeof(ev));
}
if (TEST_BIT(keypressed_prec[0],32) && ! TEST_BIT(keypressed[0],32)) {
/* right shift key is released */
if (DEBUG) printf("right shift is released\n");
memset(&ev, 0, sizeof(ev));
ev.type = EV_KEY;
ev.value = 0;
ev.code = KEY_RIGHTSHIFT;
ret = write(fd, &ev, sizeof(ev));
}
if (TEST_BIT(keypressed_prec[0],4) && ! TEST_BIT(keypressed[0],4)) {
/* left alt key is released */
if (DEBUG) printf("left alt is released\n");
memset(&ev, 0, sizeof(ev));
ev.type = EV_KEY;
ev.value = 0;
ev.code = KEY_LEFTALT;
ret = write(fd, &ev, sizeof(ev));
}
if (TEST_BIT(keypressed_prec[0],64) && ! TEST_BIT(keypressed[0],64)) {
/* right alt key is released */
if (DEBUG) printf("right alt is released\n");
memset(&ev, 0, sizeof(ev));
ev.type = EV_KEY;
ev.value = 0;
ev.code = KEY_RIGHTALT;
ret = write(fd, &ev, sizeof(ev));
}
if (TEST_BIT(keypressed_prec[0],8) && ! TEST_BIT(keypressed[0],8)) {
/* left alt key is released */
if (DEBUG) printf("win is released\n");
memset(&ev, 0, sizeof(ev));
ev.type = EV_KEY;
ev.value = 0;
ev.code = KEY_COPY;
ret = write(fd, &ev, sizeof(ev));
}
/* pressed */
if ( ! TEST_BIT(keypressed_prec[0],1) && TEST_BIT(keypressed[0],1) ) {
/* left ctrl key is pressed */
if (DEBUG) printf("left ctrl is pressed\n");
memset(&ev, 0, sizeof(ev));
ev.type = EV_KEY;
ev.value = 1;
ev.code = KEY_LEFTCTRL;
ret = write(fd, &ev, sizeof(ev));
}
if ( ! TEST_BIT(keypressed_prec[0],16) && TEST_BIT(keypressed[0],16) ) {
/* right ctrl key is pressed */
if (DEBUG) printf("right ctrl is pressed\n");
memset(&ev, 0, sizeof(ev));
ev.type = EV_KEY;
ev.value = 1;
ev.code = KEY_RIGHTCTRL;
ret = write(fd, &ev, sizeof(ev));
}
if ( ! TEST_BIT(keypressed_prec[0],2) && TEST_BIT(keypressed[0],2) ) {
/* left shift key is pressed */
if (DEBUG) printf("left shift is pressed\n");
memset(&ev, 0, sizeof(ev));
ev.type = EV_KEY;
ev.value = 1;
ev.code = KEY_LEFTSHIFT;
ret = write(fd, &ev, sizeof(ev));
}
if ( ! TEST_BIT(keypressed_prec[0],32) && TEST_BIT(keypressed[0],32) ) {
/* right shift key is pressed */
if (DEBUG) printf("right shift is pressed\n");
memset(&ev, 0, sizeof(ev));
ev.type = EV_KEY;
ev.value = 1;
ev.code = KEY_RIGHTSHIFT;
ret = write(fd, &ev, sizeof(ev));
}
if ( ! TEST_BIT(keypressed_prec[0],4) && TEST_BIT(keypressed[0],4) ) {
/* left alt key is pressed */
if (DEBUG) printf("left alt is pressed\n");
memset(&ev, 0, sizeof(ev));
ev.type = EV_KEY;
ev.value = 1;
ev.code = KEY_LEFTALT;
ret = write(fd, &ev, sizeof(ev));
}
if ( ! TEST_BIT(keypressed_prec[0],64) && TEST_BIT(keypressed[0],64) ) {
/* right alt key is pressed */
if (DEBUG) printf("right alt is pressed\n");
memset(&ev, 0, sizeof(ev));
ev.type = EV_KEY;
ev.value = 1;
ev.code = KEY_RIGHTALT;
ret = write(fd, &ev, sizeof(ev));
}
if ( ! TEST_BIT(keypressed_prec[0],8) && TEST_BIT(keypressed[0],8) ) {
/* win key is pressed */
if (DEBUG) printf("win is pressed\n");
memset(&ev, 0, sizeof(ev));
ev.type = EV_KEY;
ev.value = 1;
ev.code = KEY_COPY;
ret = write(fd, &ev, sizeof(ev));
}
}
int i,j;
for(i = 2; i < 8;i++) {
if (keypressed_prec[i] != 0) {
/* still pressed? */
for(j = 2;j < 8;j++) {
if (keypressed_prec[i] == keypressed[j]) break;
}
if (j == 8) {
/* key is released */
memset(&ev, 0, sizeof(ev));
ev.type = EV_KEY;
ev.value = 0;
ev.code = mapkey(keypressed_prec[i]);
ret = write(fd, &ev, sizeof(ev));
}
}
if (keypressed[i] != 0) {
/* wasn't pressed? */
for(j = 2;j < 8;j++) {
if (keypressed_prec[j] == keypressed[i]) break;
}
if (j == 8) {
/* key is newly pressed */
memset(&ev, 0, sizeof(ev));
ev.type = EV_KEY;
ev.value = 1;
ev.code = mapkey(keypressed[i]);
ret = write(fd, &ev, sizeof(ev));
}
}
}
memset(&ev, 0, sizeof(ev));
ev.type = EV_SYN;
ev.code = SYN_REPORT;
ev.value = 1;
ret = write(fd, &ev, sizeof(ev));
memcpy(keypressed_prec,keypressed,8);
if (DEBUG) printf("\n");
}
}
return 0;
}