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<title>Step 2.1: Creating a new protected application</title>
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<body>
<h1>Step 2.1: Creating a new protected application</h1>
<p>At the first stage we made several simple apps to test the API of the licensing system. Now, on the second stage we'll create just one application. It will also be a console app with the <strong>foo()</strong> function working only in the registered version. Here is the code of our test application:</p>
<pre class="code">#include <windows.h>
#include <stdio.h>
#include "VMProtectSDK.h"
#define PRINT_HELPER(state, flag) if (state & flag) printf("%s ", #flag)
void print_state(INT state)
{
if (state == 0)
{
printf("state = 0\n");
return;
}
printf("state = ");
PRINT_HELPER(state, SERIAL_STATE_FLAG_CORRUPTED);
PRINT_HELPER(state, SERIAL_STATE_FLAG_INVALID);
PRINT_HELPER(state, SERIAL_STATE_FLAG_BLACKLISTED);
PRINT_HELPER(state, SERIAL_STATE_FLAG_DATE_EXPIRED);
PRINT_HELPER(state, SERIAL_STATE_FLAG_RUNNING_TIME_OVER);
PRINT_HELPER(state, SERIAL_STATE_FLAG_BAD_HWID);
PRINT_HELPER(state, SERIAL_STATE_FLAG_MAX_BUILD_EXPIRED);
printf("\n");
}
char *read_serial(const char *fname)
{
FILE *f;
if (0 != fopen_s(&f, fname, "rb")) return NULL;
fseek(f, 0, SEEK_END);
int s = ftell(f);
fseek(f, 0, SEEK_SET);
char *buf = new char[s + 1];
fread(buf, s, 1, f);
buf[s] = 0;
fclose(f);
return buf;
}
// The foo() method is very short, but we need it to be an individual function
// so we asked the compiler to not compile it inline
__declspec(noinline) void foo()
{
printf("I'm foo!\n");
}
int main(int argc, char **argv)
{
char *serial = read_serial("serial.txt");
int res = VMProtectSetSerialNumber(serial);
delete [] serial;
if (res)
{
printf("serial number is bad\n");
print_state(res);
return 0;
}
printf("serial number is correct, calling foo()\n");
foo();
printf("done\n");
return 0;
}
</pre>
<p>Compile the program without the debug information, but in the linker settings we enable creating of the MAP-file - we will need it to work with VMProtect. After we run the program, we should see the following text:</p>
<pre class="code">serial number is bad
state = SERIAL_STATE_FLAG_INVALID
</pre>
<p>Currently, the licensing system still works in the test mode, because the file wasn't processed by VMProtect and doesn't contain a licensing module in it. On the <a href=
"step22_vmp.htm">next step</a> we will create a VMProtect project and will try to protect our application.</p><br />
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© 2006-2015 Copyright VMProtect Software
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