mirror of
https://github.com/qpdf/qpdf.git
synced 2024-09-28 04:59:05 +00:00
5d4cad9c02
Significantly improve the code's use of off_t for file offsets, size_t for memory sizes, and integer types in cases where there has to be compatibility with external interfaces. Rework sections of the code that would have prevented qpdf from working on files larger than 2 (or maybe 4) GB in size.
76 lines
1.6 KiB
C++
76 lines
1.6 KiB
C++
#include <qpdf/Pl_RC4.hh>
|
|
#include <qpdf/Pl_StdioFile.hh>
|
|
|
|
#include <stdio.h>
|
|
#include <string.h>
|
|
#include <iostream>
|
|
#include <stdlib.h>
|
|
|
|
int main(int argc, char* argv[])
|
|
{
|
|
if (argc != 4)
|
|
{
|
|
std::cerr << "Usage: rc4 hex-key infile outfile" << std::endl;
|
|
exit(2);
|
|
}
|
|
|
|
char* hexkey = argv[1];
|
|
char* infilename = argv[2];
|
|
char* outfilename = argv[3];
|
|
unsigned int hexkeylen = (unsigned int)strlen(hexkey);
|
|
unsigned int keylen = hexkeylen / 2;
|
|
unsigned char* key = new unsigned char[keylen + 1];
|
|
key[keylen] = '\0';
|
|
|
|
FILE* infile = fopen(infilename, "rb");
|
|
if (infile == 0)
|
|
{
|
|
std::cerr << "can't open " << infilename << std::endl;
|
|
exit(2);
|
|
}
|
|
|
|
for (unsigned int i = 0; i < strlen(hexkey); i += 2)
|
|
{
|
|
char t[3];
|
|
t[0] = hexkey[i];
|
|
t[1] = hexkey[i + 1];
|
|
t[2] = '\0';
|
|
|
|
long val = strtol(t, 0, 16);
|
|
key[i/2] = (unsigned char) val;
|
|
}
|
|
|
|
FILE* outfile = fopen(outfilename, "wb");
|
|
if (outfile == 0)
|
|
{
|
|
std::cerr << "can't open " << outfilename << std::endl;
|
|
exit(2);
|
|
}
|
|
Pl_StdioFile* out = new Pl_StdioFile("stdout", outfile);
|
|
// Use a small buffer size (64) for testing
|
|
Pl_RC4* rc4 = new Pl_RC4("rc4", out, key, keylen, 64);
|
|
delete [] key;
|
|
|
|
// 64 < buffer size < 512, buffer_size is not a power of 2 for testing
|
|
unsigned char buf[100];
|
|
bool done = false;
|
|
while (! done)
|
|
{
|
|
size_t len = fread(buf, 1, sizeof(buf), infile);
|
|
if (len <= 0)
|
|
{
|
|
done = true;
|
|
}
|
|
else
|
|
{
|
|
rc4->write(buf, len);
|
|
}
|
|
}
|
|
rc4->finish();
|
|
delete rc4;
|
|
delete out;
|
|
fclose(infile);
|
|
fclose(outfile);
|
|
return 0;
|
|
}
|