839e52ac32
* Furi: remove CMSIS thread api, migrate to FuriThread, remove unused CMSIS APIs * Furi: magic thread catcher validating thread completion; backtrace improver * Furi: allow furi_thread_get_current_id outside of thread context * Furi: use IRQ instead of ISR for core primitives
624 lines
21 KiB
C
624 lines
21 KiB
C
#include <furi.h>
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#include <furi_hal.h>
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#include <gui/gui.h>
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#include <input/input.h>
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#include <lib/toolbox/args.h>
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#include <furi_hal_usb_hid.h>
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#include <storage/storage.h>
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#include "bad_usb_script.h"
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#include <dolphin/dolphin.h>
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#define TAG "BadUSB"
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#define WORKER_TAG TAG "Worker"
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#define FILE_BUFFER_LEN 16
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#define SCRIPT_STATE_ERROR (-1)
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#define SCRIPT_STATE_END (-2)
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#define SCRIPT_STATE_NEXT_LINE (-3)
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typedef enum {
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WorkerEvtToggle = (1 << 0),
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WorkerEvtEnd = (1 << 1),
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WorkerEvtConnect = (1 << 2),
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WorkerEvtDisconnect = (1 << 3),
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} WorkerEvtFlags;
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struct BadUsbScript {
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FuriHalUsbHidConfig hid_cfg;
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BadUsbState st;
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string_t file_path;
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uint32_t defdelay;
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FuriThread* thread;
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uint8_t file_buf[FILE_BUFFER_LEN + 1];
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uint8_t buf_start;
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uint8_t buf_len;
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bool file_end;
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string_t line;
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string_t line_prev;
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uint32_t repeat_cnt;
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};
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typedef struct {
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char* name;
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uint16_t keycode;
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} DuckyKey;
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static const DuckyKey ducky_keys[] = {
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{"CTRL-ALT", KEY_MOD_LEFT_CTRL | KEY_MOD_LEFT_ALT},
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{"CTRL-SHIFT", KEY_MOD_LEFT_CTRL | KEY_MOD_LEFT_SHIFT},
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{"ALT-SHIFT", KEY_MOD_LEFT_ALT | KEY_MOD_LEFT_SHIFT},
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{"ALT-GUI", KEY_MOD_LEFT_ALT | KEY_MOD_LEFT_GUI},
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{"CTRL", KEY_MOD_LEFT_CTRL},
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{"CONTROL", KEY_MOD_LEFT_CTRL},
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{"SHIFT", KEY_MOD_LEFT_SHIFT},
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{"ALT", KEY_MOD_LEFT_ALT},
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{"GUI", KEY_MOD_LEFT_GUI},
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{"WINDOWS", KEY_MOD_LEFT_GUI},
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{"DOWNARROW", KEY_DOWN_ARROW},
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{"DOWN", KEY_DOWN_ARROW},
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{"LEFTARROW", KEY_LEFT_ARROW},
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{"LEFT", KEY_LEFT_ARROW},
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{"RIGHTARROW", KEY_RIGHT_ARROW},
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{"RIGHT", KEY_RIGHT_ARROW},
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{"UPARROW", KEY_UP_ARROW},
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{"UP", KEY_UP_ARROW},
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{"ENTER", KEY_ENTER},
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{"BREAK", KEY_PAUSE},
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{"PAUSE", KEY_PAUSE},
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{"CAPSLOCK", KEY_CAPS_LOCK},
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{"DELETE", KEY_DELETE},
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{"BACKSPACE", KEY_BACKSPACE},
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{"END", KEY_END},
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{"ESC", KEY_ESC},
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{"ESCAPE", KEY_ESC},
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{"HOME", KEY_HOME},
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{"INSERT", KEY_INSERT},
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{"NUMLOCK", KEY_NUM_LOCK},
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{"PAGEUP", KEY_PAGE_UP},
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{"PAGEDOWN", KEY_PAGE_DOWN},
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{"PRINTSCREEN", KEY_PRINT},
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{"SCROLLOCK", KEY_SCROLL_LOCK},
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{"SPACE", KEY_SPACE},
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{"TAB", KEY_TAB},
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{"MENU", KEY_APPLICATION},
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{"APP", KEY_APPLICATION},
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{"F1", KEY_F1},
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{"F2", KEY_F2},
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{"F3", KEY_F3},
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{"F4", KEY_F4},
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{"F5", KEY_F5},
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{"F6", KEY_F6},
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{"F7", KEY_F7},
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{"F8", KEY_F8},
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{"F9", KEY_F9},
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{"F10", KEY_F10},
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{"F11", KEY_F11},
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{"F12", KEY_F12},
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};
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static const char ducky_cmd_comment[] = {"REM"};
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static const char ducky_cmd_id[] = {"ID"};
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static const char ducky_cmd_delay[] = {"DELAY "};
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static const char ducky_cmd_string[] = {"STRING "};
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static const char ducky_cmd_defdelay_1[] = {"DEFAULT_DELAY "};
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static const char ducky_cmd_defdelay_2[] = {"DEFAULTDELAY "};
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static const char ducky_cmd_repeat[] = {"REPEAT "};
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static const char ducky_cmd_altchar[] = {"ALTCHAR "};
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static const char ducky_cmd_altstr_1[] = {"ALTSTRING "};
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static const char ducky_cmd_altstr_2[] = {"ALTCODE "};
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static const uint8_t numpad_keys[10] = {
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KEYPAD_0,
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KEYPAD_1,
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KEYPAD_2,
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KEYPAD_3,
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KEYPAD_4,
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KEYPAD_5,
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KEYPAD_6,
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KEYPAD_7,
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KEYPAD_8,
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KEYPAD_9,
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};
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static bool ducky_get_number(const char* param, uint32_t* val) {
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uint32_t value = 0;
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if(sscanf(param, "%lu", &value) == 1) {
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*val = value;
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return true;
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}
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return false;
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}
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static uint32_t ducky_get_command_len(const char* line) {
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uint32_t len = strlen(line);
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for(uint32_t i = 0; i < len; i++) {
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if(line[i] == ' ') return i;
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}
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return 0;
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}
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static bool ducky_is_line_end(const char chr) {
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return ((chr == ' ') || (chr == '\0') || (chr == '\r') || (chr == '\n'));
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}
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static void ducky_numlock_on() {
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if((furi_hal_hid_get_led_state() & HID_KB_LED_NUM) == 0) {
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furi_hal_hid_kb_press(KEY_NUM_LOCK);
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furi_hal_hid_kb_release(KEY_NUM_LOCK);
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}
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}
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static bool ducky_numpad_press(const char num) {
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if((num < '0') || (num > '9')) return false;
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uint16_t key = numpad_keys[num - '0'];
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furi_hal_hid_kb_press(key);
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furi_hal_hid_kb_release(key);
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return true;
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}
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static bool ducky_altchar(const char* charcode) {
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uint8_t i = 0;
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bool state = false;
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FURI_LOG_I(WORKER_TAG, "char %s", charcode);
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furi_hal_hid_kb_press(KEY_MOD_LEFT_ALT);
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while(!ducky_is_line_end(charcode[i])) {
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state = ducky_numpad_press(charcode[i]);
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if(state == false) break;
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i++;
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}
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furi_hal_hid_kb_release(KEY_MOD_LEFT_ALT);
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return state;
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}
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static bool ducky_altstring(const char* param) {
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uint32_t i = 0;
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bool state = false;
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while(param[i] != '\0') {
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if((param[i] < ' ') || (param[i] > '~')) {
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i++;
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continue; // Skip non-printable chars
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}
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char temp_str[4];
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snprintf(temp_str, 4, "%u", param[i]);
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state = ducky_altchar(temp_str);
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if(state == false) break;
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i++;
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}
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return state;
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}
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static bool ducky_string(const char* param) {
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uint32_t i = 0;
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while(param[i] != '\0') {
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uint16_t keycode = HID_ASCII_TO_KEY(param[i]);
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if(keycode != KEY_NONE) {
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furi_hal_hid_kb_press(keycode);
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furi_hal_hid_kb_release(keycode);
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}
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i++;
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}
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return true;
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}
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static uint16_t ducky_get_keycode(const char* param, bool accept_chars) {
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for(uint8_t i = 0; i < (sizeof(ducky_keys) / sizeof(ducky_keys[0])); i++) {
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uint8_t key_cmd_len = strlen(ducky_keys[i].name);
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if((strncmp(param, ducky_keys[i].name, key_cmd_len) == 0) &&
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(ducky_is_line_end(param[key_cmd_len]))) {
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return ducky_keys[i].keycode;
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}
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}
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if((accept_chars) && (strlen(param) > 0)) {
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return (HID_ASCII_TO_KEY(param[0]) & 0xFF);
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}
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return 0;
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}
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static int32_t ducky_parse_line(BadUsbScript* bad_usb, string_t line) {
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uint32_t line_len = string_size(line);
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const char* line_tmp = string_get_cstr(line);
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bool state = false;
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for(uint32_t i = 0; i < line_len; i++) {
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if((line_tmp[i] != ' ') && (line_tmp[i] != '\t') && (line_tmp[i] != '\n')) {
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line_tmp = &line_tmp[i];
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break; // Skip spaces and tabs
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}
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if(i == line_len - 1) return SCRIPT_STATE_NEXT_LINE; // Skip empty lines
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}
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FURI_LOG_D(WORKER_TAG, "line:%s", line_tmp);
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// General commands
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if(strncmp(line_tmp, ducky_cmd_comment, strlen(ducky_cmd_comment)) == 0) {
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// REM - comment line
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return (0);
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} else if(strncmp(line_tmp, ducky_cmd_id, strlen(ducky_cmd_id)) == 0) {
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// ID - executed in ducky_script_preload
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return (0);
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} else if(strncmp(line_tmp, ducky_cmd_delay, strlen(ducky_cmd_delay)) == 0) {
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// DELAY
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line_tmp = &line_tmp[ducky_get_command_len(line_tmp) + 1];
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uint32_t delay_val = 0;
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state = ducky_get_number(line_tmp, &delay_val);
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if((state) && (delay_val > 0)) {
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return (int32_t)delay_val;
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}
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return SCRIPT_STATE_ERROR;
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} else if(
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(strncmp(line_tmp, ducky_cmd_defdelay_1, strlen(ducky_cmd_defdelay_1)) == 0) ||
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(strncmp(line_tmp, ducky_cmd_defdelay_2, strlen(ducky_cmd_defdelay_2)) == 0)) {
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// DEFAULT_DELAY
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line_tmp = &line_tmp[ducky_get_command_len(line_tmp) + 1];
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state = ducky_get_number(line_tmp, &bad_usb->defdelay);
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return (state) ? (0) : SCRIPT_STATE_ERROR;
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} else if(strncmp(line_tmp, ducky_cmd_string, strlen(ducky_cmd_string)) == 0) {
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// STRING
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line_tmp = &line_tmp[ducky_get_command_len(line_tmp) + 1];
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state = ducky_string(line_tmp);
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return (state) ? (0) : SCRIPT_STATE_ERROR;
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} else if(strncmp(line_tmp, ducky_cmd_altchar, strlen(ducky_cmd_altchar)) == 0) {
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// ALTCHAR
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line_tmp = &line_tmp[ducky_get_command_len(line_tmp) + 1];
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ducky_numlock_on();
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state = ducky_altchar(line_tmp);
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return (state) ? (0) : SCRIPT_STATE_ERROR;
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} else if(
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(strncmp(line_tmp, ducky_cmd_altstr_1, strlen(ducky_cmd_altstr_1)) == 0) ||
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(strncmp(line_tmp, ducky_cmd_altstr_2, strlen(ducky_cmd_altstr_2)) == 0)) {
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// ALTSTRING
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line_tmp = &line_tmp[ducky_get_command_len(line_tmp) + 1];
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ducky_numlock_on();
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state = ducky_altstring(line_tmp);
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return (state) ? (0) : SCRIPT_STATE_ERROR;
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} else if(strncmp(line_tmp, ducky_cmd_repeat, strlen(ducky_cmd_repeat)) == 0) {
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// REPEAT
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line_tmp = &line_tmp[ducky_get_command_len(line_tmp) + 1];
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state = ducky_get_number(line_tmp, &bad_usb->repeat_cnt);
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return (state) ? (0) : SCRIPT_STATE_ERROR;
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} else {
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// Special keys + modifiers
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uint16_t key = ducky_get_keycode(line_tmp, false);
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if(key == KEY_NONE) return SCRIPT_STATE_ERROR;
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if((key & 0xFF00) != 0) {
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// It's a modifier key
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line_tmp = &line_tmp[ducky_get_command_len(line_tmp) + 1];
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key |= ducky_get_keycode(line_tmp, true);
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}
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furi_hal_hid_kb_press(key);
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furi_hal_hid_kb_release(key);
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return (0);
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}
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return SCRIPT_STATE_ERROR;
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}
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static bool ducky_set_usb_id(BadUsbScript* bad_usb, const char* line) {
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if(sscanf(line, "%lX:%lX", &bad_usb->hid_cfg.vid, &bad_usb->hid_cfg.pid) == 2) {
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bad_usb->hid_cfg.manuf[0] = '\0';
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bad_usb->hid_cfg.product[0] = '\0';
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uint8_t id_len = ducky_get_command_len(line);
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if(!ducky_is_line_end(line[id_len + 1])) {
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sscanf(
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&line[id_len + 1],
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"%31[^\r\n:]:%31[^\r\n]",
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bad_usb->hid_cfg.manuf,
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bad_usb->hid_cfg.product);
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}
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FURI_LOG_D(
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WORKER_TAG,
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"set id: %04X:%04X mfr:%s product:%s",
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bad_usb->hid_cfg.vid,
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bad_usb->hid_cfg.pid,
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bad_usb->hid_cfg.manuf,
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bad_usb->hid_cfg.product);
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return true;
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}
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return false;
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}
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static bool ducky_script_preload(BadUsbScript* bad_usb, File* script_file) {
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uint8_t ret = 0;
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uint32_t line_len = 0;
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string_reset(bad_usb->line);
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do {
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ret = storage_file_read(script_file, bad_usb->file_buf, FILE_BUFFER_LEN);
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for(uint16_t i = 0; i < ret; i++) {
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if(bad_usb->file_buf[i] == '\n' && line_len > 0) {
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bad_usb->st.line_nb++;
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line_len = 0;
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} else {
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if(bad_usb->st.line_nb == 0) { // Save first line
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string_push_back(bad_usb->line, bad_usb->file_buf[i]);
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}
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line_len++;
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}
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}
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if(storage_file_eof(script_file)) {
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if(line_len > 0) {
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bad_usb->st.line_nb++;
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break;
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}
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}
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} while(ret > 0);
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const char* line_tmp = string_get_cstr(bad_usb->line);
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bool id_set = false; // Looking for ID command at first line
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if(strncmp(line_tmp, ducky_cmd_id, strlen(ducky_cmd_id)) == 0) {
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id_set = ducky_set_usb_id(bad_usb, &line_tmp[strlen(ducky_cmd_id) + 1]);
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}
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if(id_set) {
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furi_check(furi_hal_usb_set_config(&usb_hid, &bad_usb->hid_cfg));
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} else {
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furi_check(furi_hal_usb_set_config(&usb_hid, NULL));
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}
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storage_file_seek(script_file, 0, true);
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string_reset(bad_usb->line);
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return true;
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}
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static int32_t ducky_script_execute_next(BadUsbScript* bad_usb, File* script_file) {
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int32_t delay_val = 0;
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if(bad_usb->repeat_cnt > 0) {
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bad_usb->repeat_cnt--;
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delay_val = ducky_parse_line(bad_usb, bad_usb->line_prev);
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if(delay_val == SCRIPT_STATE_NEXT_LINE) { // Empty line
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return 0;
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} else if(delay_val < 0) { // Script error
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bad_usb->st.error_line = bad_usb->st.line_cur - 1;
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FURI_LOG_E(WORKER_TAG, "Unknown command at line %lu", bad_usb->st.line_cur - 1);
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return SCRIPT_STATE_ERROR;
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} else {
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return (delay_val + bad_usb->defdelay);
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}
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}
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string_set(bad_usb->line_prev, bad_usb->line);
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string_reset(bad_usb->line);
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while(1) {
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if(bad_usb->buf_len == 0) {
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bad_usb->buf_len = storage_file_read(script_file, bad_usb->file_buf, FILE_BUFFER_LEN);
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if(storage_file_eof(script_file)) {
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if((bad_usb->buf_len < FILE_BUFFER_LEN) && (bad_usb->file_end == false)) {
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bad_usb->file_buf[bad_usb->buf_len] = '\n';
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bad_usb->buf_len++;
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bad_usb->file_end = true;
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}
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}
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bad_usb->buf_start = 0;
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if(bad_usb->buf_len == 0) return SCRIPT_STATE_END;
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}
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for(uint8_t i = bad_usb->buf_start; i < (bad_usb->buf_start + bad_usb->buf_len); i++) {
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if(bad_usb->file_buf[i] == '\n' && string_size(bad_usb->line) > 0) {
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bad_usb->st.line_cur++;
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bad_usb->buf_len = bad_usb->buf_len + bad_usb->buf_start - (i + 1);
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bad_usb->buf_start = i + 1;
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delay_val = ducky_parse_line(bad_usb, bad_usb->line);
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if(delay_val < 0) {
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bad_usb->st.error_line = bad_usb->st.line_cur;
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FURI_LOG_E(WORKER_TAG, "Unknown command at line %lu", bad_usb->st.line_cur);
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return SCRIPT_STATE_ERROR;
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} else {
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return (delay_val + bad_usb->defdelay);
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}
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} else {
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string_push_back(bad_usb->line, bad_usb->file_buf[i]);
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}
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}
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bad_usb->buf_len = 0;
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if(bad_usb->file_end) return SCRIPT_STATE_END;
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}
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return 0;
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}
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static void bad_usb_hid_state_callback(bool state, void* context) {
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furi_assert(context);
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BadUsbScript* bad_usb = context;
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if(state == true)
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furi_thread_flags_set(furi_thread_get_id(bad_usb->thread), WorkerEvtConnect);
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else
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furi_thread_flags_set(furi_thread_get_id(bad_usb->thread), WorkerEvtDisconnect);
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}
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static int32_t bad_usb_worker(void* context) {
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BadUsbScript* bad_usb = context;
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BadUsbWorkerState worker_state = BadUsbStateInit;
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int32_t delay_val = 0;
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FuriHalUsbInterface* usb_mode_prev = furi_hal_usb_get_config();
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FURI_LOG_I(WORKER_TAG, "Init");
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File* script_file = storage_file_alloc(furi_record_open("storage"));
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string_init(bad_usb->line);
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string_init(bad_usb->line_prev);
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furi_hal_hid_set_state_callback(bad_usb_hid_state_callback, bad_usb);
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while(1) {
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if(worker_state == BadUsbStateInit) { // State: initialization
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if(storage_file_open(
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script_file,
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string_get_cstr(bad_usb->file_path),
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FSAM_READ,
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FSOM_OPEN_EXISTING)) {
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if((ducky_script_preload(bad_usb, script_file)) && (bad_usb->st.line_nb > 0)) {
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if(furi_hal_hid_is_connected()) {
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worker_state = BadUsbStateIdle; // Ready to run
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} else {
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worker_state = BadUsbStateNotConnected; // USB not connected
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}
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} else {
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worker_state = BadUsbStateScriptError; // Script preload error
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}
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} else {
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FURI_LOG_E(WORKER_TAG, "File open error");
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worker_state = BadUsbStateFileError; // File open error
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}
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bad_usb->st.state = worker_state;
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} else if(worker_state == BadUsbStateNotConnected) { // State: USB not connected
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uint32_t flags = furi_thread_flags_wait(
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WorkerEvtEnd | WorkerEvtConnect, osFlagsWaitAny, osWaitForever);
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furi_check((flags & osFlagsError) == 0);
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if(flags & WorkerEvtEnd) {
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break;
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} else if(flags & WorkerEvtConnect) {
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worker_state = BadUsbStateIdle; // Ready to run
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}
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bad_usb->st.state = worker_state;
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} else if(worker_state == BadUsbStateIdle) { // State: ready to start
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uint32_t flags = furi_thread_flags_wait(
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WorkerEvtEnd | WorkerEvtToggle | WorkerEvtDisconnect,
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osFlagsWaitAny,
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osWaitForever);
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furi_check((flags & osFlagsError) == 0);
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if(flags & WorkerEvtEnd) {
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break;
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} else if(flags & WorkerEvtToggle) { // Start executing script
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DOLPHIN_DEED(DolphinDeedBadUsbPlayScript);
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delay_val = 0;
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bad_usb->buf_len = 0;
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bad_usb->st.line_cur = 0;
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bad_usb->defdelay = 0;
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bad_usb->repeat_cnt = 0;
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bad_usb->file_end = false;
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storage_file_seek(script_file, 0, true);
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worker_state = BadUsbStateRunning;
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} else if(flags & WorkerEvtDisconnect) {
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worker_state = BadUsbStateNotConnected; // USB disconnected
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}
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bad_usb->st.state = worker_state;
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} else if(worker_state == BadUsbStateRunning) { // State: running
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uint16_t delay_cur = (delay_val > 1000) ? (1000) : (delay_val);
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uint32_t flags = furi_thread_flags_wait(
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WorkerEvtEnd | WorkerEvtToggle | WorkerEvtDisconnect, osFlagsWaitAny, delay_cur);
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delay_val -= delay_cur;
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if(!(flags & osFlagsError)) {
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if(flags & WorkerEvtEnd) {
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break;
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} else if(flags & WorkerEvtToggle) {
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worker_state = BadUsbStateIdle; // Stop executing script
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furi_hal_hid_kb_release_all();
|
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} else if(flags & WorkerEvtDisconnect) {
|
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worker_state = BadUsbStateNotConnected; // USB disconnected
|
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furi_hal_hid_kb_release_all();
|
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}
|
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bad_usb->st.state = worker_state;
|
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continue;
|
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} else if((flags == osFlagsErrorTimeout) || (flags == osFlagsErrorResource)) {
|
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if(delay_val > 0) {
|
|
bad_usb->st.delay_remain--;
|
|
continue;
|
|
}
|
|
bad_usb->st.state = BadUsbStateRunning;
|
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delay_val = ducky_script_execute_next(bad_usb, script_file);
|
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if(delay_val == SCRIPT_STATE_ERROR) { // Script error
|
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delay_val = 0;
|
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worker_state = BadUsbStateScriptError;
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|
bad_usb->st.state = worker_state;
|
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} else if(delay_val == SCRIPT_STATE_END) { // End of script
|
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delay_val = 0;
|
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worker_state = BadUsbStateIdle;
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bad_usb->st.state = BadUsbStateDone;
|
|
furi_hal_hid_kb_release_all();
|
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continue;
|
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} else if(delay_val > 1000) {
|
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bad_usb->st.state = BadUsbStateDelay; // Show long delays
|
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bad_usb->st.delay_remain = delay_val / 1000;
|
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}
|
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} else {
|
|
furi_check((flags & osFlagsError) == 0);
|
|
}
|
|
|
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} else if(
|
|
(worker_state == BadUsbStateFileError) ||
|
|
(worker_state == BadUsbStateScriptError)) { // State: error
|
|
uint32_t flags = furi_thread_flags_wait(
|
|
WorkerEvtEnd, osFlagsWaitAny, osWaitForever); // Waiting for exit command
|
|
furi_check((flags & osFlagsError) == 0);
|
|
if(flags & WorkerEvtEnd) {
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
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furi_hal_hid_set_state_callback(NULL, NULL);
|
|
|
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furi_hal_usb_set_config(usb_mode_prev, NULL);
|
|
|
|
storage_file_close(script_file);
|
|
storage_file_free(script_file);
|
|
string_clear(bad_usb->line);
|
|
string_clear(bad_usb->line_prev);
|
|
|
|
FURI_LOG_I(WORKER_TAG, "End");
|
|
|
|
return 0;
|
|
}
|
|
|
|
BadUsbScript* bad_usb_script_open(string_t file_path) {
|
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furi_assert(file_path);
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|
|
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BadUsbScript* bad_usb = malloc(sizeof(BadUsbScript));
|
|
string_init(bad_usb->file_path);
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|
string_set(bad_usb->file_path, file_path);
|
|
|
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bad_usb->st.state = BadUsbStateInit;
|
|
|
|
bad_usb->thread = furi_thread_alloc();
|
|
furi_thread_set_name(bad_usb->thread, "BadUsbWorker");
|
|
furi_thread_set_stack_size(bad_usb->thread, 2048);
|
|
furi_thread_set_context(bad_usb->thread, bad_usb);
|
|
furi_thread_set_callback(bad_usb->thread, bad_usb_worker);
|
|
|
|
furi_thread_start(bad_usb->thread);
|
|
return bad_usb;
|
|
}
|
|
|
|
void bad_usb_script_close(BadUsbScript* bad_usb) {
|
|
furi_assert(bad_usb);
|
|
furi_thread_flags_set(furi_thread_get_id(bad_usb->thread), WorkerEvtEnd);
|
|
furi_thread_join(bad_usb->thread);
|
|
furi_thread_free(bad_usb->thread);
|
|
string_clear(bad_usb->file_path);
|
|
free(bad_usb);
|
|
}
|
|
|
|
void bad_usb_script_toggle(BadUsbScript* bad_usb) {
|
|
furi_assert(bad_usb);
|
|
furi_thread_flags_set(furi_thread_get_id(bad_usb->thread), WorkerEvtToggle);
|
|
}
|
|
|
|
BadUsbState* bad_usb_script_get_state(BadUsbScript* bad_usb) {
|
|
furi_assert(bad_usb);
|
|
return &(bad_usb->st);
|
|
}
|