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How does iw4m insert the username as a gametage, does it read from the iw4m.ini, like mw2 does or it use other types

When you login with your 4d1 account on the popup, and you click remember credentials (it saves them in iw4m.ini) so you dont have to authenticate everytime you boot the game.

 

When you boot the game it reads the username (from the authencation) in the code

 

char* Auth_GetUsername()
{
return authUsername;
}

 

So the iw4m.dll file has your username.

 

When the game loads it needs a name (gamertag)

 

It does that here:

const char *CSteamFriends005::GetPersonaName()
{
#ifdef PRE_RELEASE_DEMOED
dvar_t* name = Dvar_FindVar("name");
DWORD bufSize = sizeof(g_userName);
GetUserName(g_userName, &bufSize);

if (!g_nameSet)
{
	Dvar_SetCommand("name", g_userName);
	g_nameSet = true;
}

if (strcmp(name->current.string, g_userName))
{
	return name->current.string;
}

return g_userName;
#else
if (GAME_FLAG(GAME_FLAG_DEDICATED))
{
	return VERSIONSTRING "d";
}

return Auth_GetUsername();
#endif
}

 

And as you see, it does Auth_GetUsername() which was defined in the start of this post, and that is how it gets the name.

 

P.S If I am completely incorrect or I made a mistake in this post, please correct me as this is just a random guess

Through NP..?