2B2NA1UyI8TDn0wXXCXEGH changeset

Changeset376564326131 (b)
ParentNone (a)
ab
0+#include <iostream>
0+#include <cstdio>
0+
0+using namespace std;
0+
0+void tFunc(int (*_printf)(const char*,...))
0+{
0+        _printf("You got here!");
0+}
0+
0+int main(int argc, char* argv[])
0+{
0+        unsigned int fsize;
0+       
0+        unsigned int mv, tv;
0+       
0+        mv = reinterpret_cast<unsigned int>(main);
0+        tv = reinterpret_cast<unsigned int>(tFunc);
0+       
0+        fsize = mv - tv;
0+       
0+        int (*_printf)(const char*, ...);
0+        void (*_tFunc)(int (*)(const char*, ...));
0+        _printf = printf;
0+       
0+        unsigned char buff[256];
0+        unsigned char* cpy = (unsigned char*) tFunc;
0+       
0+        for(unsigned int i = 0; i < fsize; i++)
0+        {
0+                buff[i] = cpy[i];
0+        }
0+       
0+        _tFunc = (void(*)(int(*)(const char*, ...))) buff;
0+       
0+        _tFunc(_printf);
0+        //tFunc(_printf);
0+       
0+        return 0;
0+}
...
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
--- Revision None
+++ Revision 376564326131
@@ -0,0 +1,40 @@
+#include <iostream>
+#include <cstdio>
+
+using namespace std;
+
+void tFunc(int (*_printf)(const char*,...))
+{
+ _printf("You got here!");
+}
+
+int main(int argc, char* argv[])
+{
+ unsigned int fsize;
+
+ unsigned int mv, tv;
+
+ mv = reinterpret_cast<unsigned int>(main);
+ tv = reinterpret_cast<unsigned int>(tFunc);
+
+ fsize = mv - tv;
+
+ int (*_printf)(const char*, ...);
+ void (*_tFunc)(int (*)(const char*, ...));
+ _printf = printf;
+
+ unsigned char buff[256];
+ unsigned char* cpy = (unsigned char*) tFunc;
+
+ for(unsigned int i = 0; i < fsize; i++)
+ {
+ buff[i] = cpy[i];
+ }
+
+ _tFunc = (void(*)(int(*)(const char*, ...))) buff;
+
+ _tFunc(_printf);
+ //tFunc(_printf);
+
+ return 0;
+}