more reliable keyboard injection

[netwatch.git] / aseg / keyboard.c

#include "keyboard.h"
#include <output.h>

static unsigned char kbd_inj_buffer[128];
static int kbd_inj_start = 0;
static int kbd_inj_end = 0;
int kbd_mode = 1;

static const char scancodes2[][8] = {
	['a'] = "\x1c\xf0\x1c",
	['b'] = "\x32\xf0\x32",
	['c'] = "\x21\xf0\x21",
	['d'] = "\x23\xf0\x23",
	['e'] = "\x24\xf0\x24",
	['f'] = "\x2b\xf0\x2b",
	['g'] = "\x34\xf0\x34",
	['h'] = "\x33\xf0\x33",
	['i'] = "\x43\xf0\x43",
	['j'] = "\x3b\xf0\x3b",
	['k'] = "\x42\xf0\x42",
	['l'] = "\x4b\xf0\x4b",
	['m'] = "\x3a\xf0\x3a",
	['n'] = "\x31\xf0\x31",
	['o'] = "\x44\xf0\x44",
	['p'] = "\x4d\xf0\x4d",
	['q'] = "\x15\xf0\x15",
	['r'] = "\x2d\xf0\x2d",
	['s'] = "\x1b\xf0\x1b",
	['t'] = "\x2c\xf0\x2c",
	['u'] = "\x3c\xf0\x3c",
	['v'] = "\x2a\xf0\x2a",
	['w'] = "\x1d\xf0\x1d",
	['x'] = "\x22\xf0\x22",
	['y'] = "\x35\xf0\x35",
	['z'] = "\x1a\xf0\x1a",
	['A'] = "\x12\x1c\xf0\x1c\xf0\x12",
	['B'] = "\x12\x32\xf0\x32\xf0\x12",
	['C'] = "\x12\x21\xf0\x21\xf0\x12",
	['D'] = "\x12\x23\xf0\x23\xf0\x12",
	['E'] = "\x12\x24\xf0\x24\xf0\x12",
	['F'] = "\x12\x2b\xf0\x2b\xf0\x12",
	['G'] = "\x12\x34\xf0\x34\xf0\x12",
	['H'] = "\x12\x33\xf0\x33\xf0\x12",
	['I'] = "\x12\x43\xf0\x43\xf0\x12",
	['J'] = "\x12\x3b\xf0\x3b\xf0\x12",
	['K'] = "\x12\x42\xf0\x42\xf0\x12",
	['L'] = "\x12\x4b\xf0\x4b\xf0\x12",
	['M'] = "\x12\x3a\xf0\x3a\xf0\x12",
	['N'] = "\x12\x31\xf0\x31\xf0\x12",
	['O'] = "\x12\x44\xf0\x44\xf0\x12",
	['P'] = "\x12\x4d\xf0\x4d\xf0\x12",
	['Q'] = "\x12\x15\xf0\x15\xf0\x12",
	['R'] = "\x12\x2d\xf0\x2d\xf0\x12",
	['S'] = "\x12\x1b\xf0\x1b\xf0\x12",
	['T'] = "\x12\x2c\xf0\x2c\xf0\x12",
	['U'] = "\x12\x3c\xf0\x3c\xf0\x12",
	['V'] = "\x12\x2a\xf0\x2a\xf0\x12",
	['W'] = "\x12\x1d\xf0\x1d\xf0\x12",
	['X'] = "\x12\x22\xf0\x22\xf0\x12",
	['Y'] = "\x12\x35\xf0\x35\xf0\x12",
	['Z'] = "\x12\x1a\xf0\x1a\xf0\x12",
	['`'] = "\x0e\xf0\x0e",
	['~'] = "\x12\x0e\xf0\x0e\xf0\x12",
	['1'] = "\x16\xf0\x16",
	['!'] = "\x12\x16\xf0\x16\xf0\x12",
	['2'] = "\x1e\xf0\x1e",
	['@'] = "\x12\x1e\xf0\x1e\xf0\x12",
	['3'] = "\x26\xf0\x26",
	['#'] = "\x12\x26\xf0\x26\xf0\x12",
	['4'] = "\x25\xf0\x25",
	['$'] = "\x12\x25\xf0\x25\xf0\x12",
	['5'] = "\x2e\xf0\x2e",
	['%'] = "\x12\x2e\xf0\x2e\xf0\x12",
	['6'] = "\x36\xf0\x36",
	['^'] = "\x12\x36\xf0\x36\xf0\x12",
	['7'] = "\x3d\xf0\x3d",
	['&'] = "\x12\x3d\xf0\x3d\xf0\x12",
	['8'] = "\x3e\xf0\x3e",
	['*'] = "\x12\x3e\xf0\x3e\xf0\x12",
	['9'] = "\x46\xf0\x46",
	['('] = "\x12\x46\xf0\x46\xf0\x12",
	['0'] = "\x45\xf0\x45",
	[')'] = "\x12\x45\xf0\x45\xf0\x12",
	['-'] = "\x4e\xf0\x4e",
	['_'] = "\x12\x4e\xf0\x4e\xf0\x12",
	['='] = "\x55\xf0\x55",
	['+'] = "\x12\x55\xf0\x55\xf0\x12",
	['['] = "\x54\xf0\x54",
	['{'] = "\x12\x54\xf0\x54\xf0\x12",
	[']'] = "\x5b\xf0\x5b",
	['}'] = "\x12\x5b\xf0\x5b\xf0\x12",
	['\\'] = "\x5d\xf0\x5d",
	['|'] = "\x12\x5d\xf0\x5d\xf0\x12",
	[';'] = "\x4c\xf0\x4c",
	[':'] = "\x12\x4c\xf0\x4c\xf0\x12",
	['\''] = "\x52\xf0\x52",
	['"'] = "\x12\x52\xf0\x52\xf0\x12",
	[','] = "\x41\xf0\x41",
	['<'] = "\x12\x41\xf0\x41\xf0\x12",
	['.'] = "\x49\xf0\x49",
	['>'] = "\x12\x49\xf0\x49\xf0\x12",
	['/'] = "\x4a\xf0\x4a",
	['?'] = "\x12\x4a\xf0\x4a\xf0\x12",
	['\n'] = "\x5a\xf0\x5a",
	['\t'] = "\x0d\xf0\x0d",
	['\b'] = "\x66\xf0\x66",
	[' '] = "\x29\xf0\x29"
};

const unsigned char convert_table[] = {
	0xff, 0x43, 0x41, 0x3f, 0x3d, 0x3b, 0x3c, 0x58, 0x64, 0x44, 0x42, 0x40, 0x3e, 0x0f, 0x29, 0x59,
	0x65, 0x38, 0x2a, 0x70, 0x1d, 0x10, 0x02, 0x5a, 0x66, 0x71, 0x2c, 0x1f, 0x1e, 0x11, 0x03, 0x5b,
	0x67, 0x2e, 0x2d, 0x20, 0x12, 0x05, 0x04, 0x5c, 0x68, 0x39, 0x2f, 0x21, 0x14, 0x13, 0x06, 0x5d,
	0x69, 0x31, 0x30, 0x23, 0x22, 0x15, 0x07, 0x5e, 0x6a, 0x72, 0x32, 0x24, 0x16, 0x08, 0x09, 0x5f,
	0x6b, 0x33, 0x25, 0x17, 0x18, 0x0b, 0x0a, 0x60, 0x6c, 0x34, 0x35, 0x26, 0x27, 0x19, 0x0c, 0x61,
	0x6d, 0x73, 0x28, 0x74, 0x1a, 0x0d, 0x62, 0x6e, 0x3a, 0x36, 0x1c, 0x1b, 0x75, 0x2b, 0x63, 0x76,
	0x55, 0x56, 0x77, 0x78, 0x79, 0x7a, 0x0e, 0x7b, 0x7c, 0x4f, 0x7d, 0x4b, 0x47, 0x7e, 0x7f, 0x6f,
	0x52, 0x53, 0x50, 0x4c, 0x4d, 0x48, 0x01, 0x45, 0x57, 0x4e, 0x51, 0x4a, 0x37, 0x49, 0x46, 0x54,
	0x80, 0x81, 0x82, 0x41, 0x54, 0x85, 0x86, 0x87, 0x88, 0x89, 0x8a, 0x8b, 0x8c, 0x8d, 0x8e, 0x8f,
	0x90, 0x91, 0x92, 0x93, 0x94, 0x95, 0x96, 0x97, 0x98, 0x99, 0x9a, 0x9b, 0x9c, 0x9d, 0x9e, 0x9f,
	0xa0, 0xa1, 0xa2, 0xa3, 0xa4, 0xa5, 0xa6, 0xa7, 0xa8, 0xa9, 0xaa, 0xab, 0xac, 0xad, 0xae, 0xaf,
	0xb0, 0xb1, 0xb2, 0xb3, 0xb4, 0xb5, 0xb6, 0xb7, 0xb8, 0xb9, 0xba, 0xbb, 0xbc, 0xbd, 0xbe, 0xbf,
	0xc0, 0xc1, 0xc2, 0xc3, 0xc4, 0xc5, 0xc6, 0xc7, 0xc8, 0xc9, 0xca, 0xcb, 0xcc, 0xcd, 0xce, 0xcf,
	0xd0, 0xd1, 0xd2, 0xd3, 0xd4, 0xd5, 0xd6, 0xd7, 0xd8, 0xd9, 0xda, 0xdb, 0xdc, 0xdd, 0xde, 0xdf,
	0xe0, 0xe1, 0xe2, 0xe3, 0xe4, 0xe5, 0xe6, 0xe7, 0xe8, 0xe9, 0xea, 0xeb, 0xec, 0xed, 0xee, 0xef,
	0x00, 0xf1, 0xf2, 0xf3, 0xf4, 0xf5, 0xf6, 0xf7, 0xf8, 0xf9, 0xfa, 0xfb, 0xfc, 0xfd, 0xfe, 0xff
};

unsigned char sc_convert_1(unsigned char in)
{
	static int shifted = 0;

	if (shifted)
	{
		shifted = 0;
		return convert_table[in] | 0x80;
	}

	if (in == 0xF0)
	{
		shifted = 1;
		return 0;
	} else {
		return convert_table[in];
	} 
}

void kbd_inject_scancode (unsigned char sc)
{
	outputf("Buffering %02x", sc);
	kbd_inj_buffer[kbd_inj_end] = sc;
	kbd_inj_end += 1;
	kbd_inj_end %= sizeof(kbd_inj_buffer);
}

void kbd_inject_key(unsigned char k)
{
	const char * c;

	if (kbd_mode == 1) {
		c = scancodes2[k];
		if (!c) return;
		while (*c) {
			char cconv = sc_convert_1(*c);
			if (cconv) kbd_inject_scancode(cconv);
			c++;
		}
	} else {
		c = scancodes2[k];
		if (!c) return;
		while (*c) {
			kbd_inject_scancode(*c);
			c++;
		}
	}
}

unsigned char kbd_get_injected_scancode()
{
	unsigned char b;

	if (kbd_inj_end != kbd_inj_start)
	{
		b = kbd_inj_buffer[kbd_inj_start];
		kbd_inj_start += 1;
		kbd_inj_start %= sizeof(kbd_inj_buffer);
		outputf("Injecting %02x", b);
		return b;
	} else {
		outputf("Not injecting");
		return 0;
	}
}

int kbd_has_injected_scancode()
{
	if (kbd_inj_end != kbd_inj_start)
	{
		return 1;
	} else {
		return 0;
	}
}