flipperzero-firmware/applications/main/bad_usb/helpers/ducky_script_commands.c
Nikolay Minaylov 0444a80f19
[FL-3134] BadUSB: Script interpreter refactoring (#2485)
* Script command and character tables
* Non-blocking stringdelay, docs update
* altchar/altstring fix
* Layout select UI fix
* Remove debug print

Co-authored-by: あく <alleteam@gmail.com>
2023-03-21 02:22:03 +09:00

178 lines
5.5 KiB
C

#include <furi_hal.h>
#include <furi_hal_usb_hid.h>
#include "ducky_script.h"
#include "ducky_script_i.h"
typedef int32_t (*DuckyCmdCallback)(BadUsbScript* bad_usb, const char* line, int32_t param);
typedef struct {
char* name;
DuckyCmdCallback callback;
int32_t param;
} DuckyCmd;
static int32_t ducky_fnc_delay(BadUsbScript* bad_usb, const char* line, int32_t param) {
UNUSED(param);
line = &line[ducky_get_command_len(line) + 1];
uint32_t delay_val = 0;
bool state = ducky_get_number(line, &delay_val);
if((state) && (delay_val > 0)) {
return (int32_t)delay_val;
}
return ducky_error(bad_usb, "Invalid number %s", line);
}
static int32_t ducky_fnc_defdelay(BadUsbScript* bad_usb, const char* line, int32_t param) {
UNUSED(param);
line = &line[ducky_get_command_len(line) + 1];
bool state = ducky_get_number(line, &bad_usb->defdelay);
if(!state) {
return ducky_error(bad_usb, "Invalid number %s", line);
}
return 0;
}
static int32_t ducky_fnc_strdelay(BadUsbScript* bad_usb, const char* line, int32_t param) {
UNUSED(param);
line = &line[ducky_get_command_len(line) + 1];
bool state = ducky_get_number(line, &bad_usb->stringdelay);
if(!state) {
return ducky_error(bad_usb, "Invalid number %s", line);
}
return 0;
}
static int32_t ducky_fnc_string(BadUsbScript* bad_usb, const char* line, int32_t param) {
line = &line[ducky_get_command_len(line) + 1];
furi_string_set_str(bad_usb->string_print, line);
if(param == 1) {
furi_string_cat(bad_usb->string_print, "\n");
}
if(bad_usb->stringdelay == 0) { // stringdelay not set - run command immidiately
bool state = ducky_string(bad_usb, furi_string_get_cstr(bad_usb->string_print));
if(!state) {
return ducky_error(bad_usb, "Invalid string %s", line);
}
} else { // stringdelay is set - run command in thread to keep handling external events
return SCRIPT_STATE_STRING_START;
}
return 0;
}
static int32_t ducky_fnc_repeat(BadUsbScript* bad_usb, const char* line, int32_t param) {
UNUSED(param);
line = &line[ducky_get_command_len(line) + 1];
bool state = ducky_get_number(line, &bad_usb->repeat_cnt);
if((!state) || (bad_usb->repeat_cnt == 0)) {
return ducky_error(bad_usb, "Invalid number %s", line);
}
return 0;
}
static int32_t ducky_fnc_sysrq(BadUsbScript* bad_usb, const char* line, int32_t param) {
UNUSED(param);
line = &line[ducky_get_command_len(line) + 1];
uint16_t key = ducky_get_keycode(bad_usb, line, true);
furi_hal_hid_kb_press(KEY_MOD_LEFT_ALT | HID_KEYBOARD_PRINT_SCREEN);
furi_hal_hid_kb_press(key);
furi_hal_hid_kb_release_all();
return 0;
}
static int32_t ducky_fnc_altchar(BadUsbScript* bad_usb, const char* line, int32_t param) {
UNUSED(param);
line = &line[ducky_get_command_len(line) + 1];
ducky_numlock_on();
bool state = ducky_altchar(line);
if(!state) {
return ducky_error(bad_usb, "Invalid altchar %s", line);
}
return 0;
}
static int32_t ducky_fnc_altstring(BadUsbScript* bad_usb, const char* line, int32_t param) {
UNUSED(param);
line = &line[ducky_get_command_len(line) + 1];
ducky_numlock_on();
bool state = ducky_altstring(line);
if(!state) {
return ducky_error(bad_usb, "Invalid altstring %s", line);
}
return 0;
}
static int32_t ducky_fnc_hold(BadUsbScript* bad_usb, const char* line, int32_t param) {
UNUSED(param);
line = &line[ducky_get_command_len(line) + 1];
uint16_t key = ducky_get_keycode(bad_usb, line, true);
if(key == HID_KEYBOARD_NONE) {
return ducky_error(bad_usb, "No keycode defined for %s", line);
}
bad_usb->key_hold_nb++;
if(bad_usb->key_hold_nb > (HID_KB_MAX_KEYS - 1)) {
return ducky_error(bad_usb, "Too many keys are hold");
}
furi_hal_hid_kb_press(key);
return 0;
}
static int32_t ducky_fnc_release(BadUsbScript* bad_usb, const char* line, int32_t param) {
UNUSED(param);
line = &line[ducky_get_command_len(line) + 1];
uint16_t key = ducky_get_keycode(bad_usb, line, true);
if(key == HID_KEYBOARD_NONE) {
return ducky_error(bad_usb, "No keycode defined for %s", line);
}
if(bad_usb->key_hold_nb == 0) {
return ducky_error(bad_usb, "No keys are hold");
}
bad_usb->key_hold_nb--;
furi_hal_hid_kb_release(key);
return 0;
}
static const DuckyCmd ducky_commands[] = {
{"REM ", NULL, -1},
{"ID ", NULL, -1},
{"DELAY ", ducky_fnc_delay, -1},
{"STRING ", ducky_fnc_string, 0},
{"STRINGLN ", ducky_fnc_string, 1},
{"DEFAULT_DELAY ", ducky_fnc_defdelay, -1},
{"DEFAULTDELAY ", ducky_fnc_defdelay, -1},
{"STRINGDELAY ", ducky_fnc_strdelay, -1},
{"STRING_DELAY ", ducky_fnc_strdelay, -1},
{"REPEAT ", ducky_fnc_repeat, -1},
{"SYSRQ ", ducky_fnc_sysrq, -1},
{"ALTCHAR ", ducky_fnc_altchar, -1},
{"ALTSTRING ", ducky_fnc_altstring, -1},
{"ALTCODE ", ducky_fnc_altstring, -1},
{"HOLD ", ducky_fnc_hold, -1},
{"RELEASE ", ducky_fnc_release, -1},
};
int32_t ducky_execute_cmd(BadUsbScript* bad_usb, const char* line) {
for(size_t i = 0; i < COUNT_OF(ducky_commands); i++) {
if(strncmp(line, ducky_commands[i].name, strlen(ducky_commands[i].name)) == 0) {
if(ducky_commands[i].callback == NULL) {
return 0;
} else {
return ((ducky_commands[i].callback)(bad_usb, line, ducky_commands[i].param));
}
}
}
return SCRIPT_STATE_CMD_UNKNOWN;
}