Re: Application Reading Itself




"ReaperUnreal" <reaperunreal@xxxxxxxxx> wrote in message
news:1151688932.914912.104440@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
I'm writing an application that will store some hidden and encrypted
data at the end of the file, however, I'm having trouble getting the
application to read itself. Here's the code I have:

FILE *myself = NULL;
if(!(myself = fopen("AppReader.exe", "rb")))
{
fprintf(stderr, "Cannot open file to read.");
}
fseek(myself, -8, SEEK_END);
char buffer[10];
fread(buffer, 1, 8, myself);
buffer[8] = '\0';
printf("String: %s\n", buffer);
fclose(myself);

I realize that this isn't exactly the safest application, and that I
have no real error measures in place, however this is just a test to
see if it will work.

So the question is, does anyone know how to get it to work?

argv[0] normally contains the name of the executable, often a path to it.

The OS may allow you to open this as a regular binary file. However a lot
won't because of the obvious security hazards.
The portable way to include data in your executable is to include it as a C
array. However you cannot guarantee being able to edit this data after
compilation - some systems will let you do so, others won't.

There are also many platform specific ways of including data objects in C
programs.
--
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.

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