int main(int argc, char *argv[])
{
char *infname;
char *outfname;
const unsigned char *key;
FILE *infp, *outfp;
key = argv[3];
if(argc>1) infname=argv[1];
//else usage(argv[0]);
if(!(infp=fopen(infname, "rb"))) {
fprintf(stderr, "ERROR: fopen(%s)\n", argv[1]);
exit(1);
}
if(argc>2) outfname=argv[2];
else {
if(!(outfname=malloc(strlen(infname)+5))) {
fprintf(stderr, "ERROR: malloc failed\n");
exit(1);
}
strcpy(outfname, argv[1]);
strcat(outfname, ".xor");
}
if(!(outfp=fopen(outfname, "wb"))) {
fprintf(stderr, "ERROR: fopen(%s)\n", outfname);
exit(1);
}
//key= "this is naru catch me if you can";
xorcipher(key, infp, outfp);
fclose(outfp);
fclose(infp);
if(argc<4) free(outfname);
return 0;
}
int main(int argc, char *argv[])
{
char *infname;
char *outfname;
//const unsigned char *key;
const unsigned char key[100] = {0};
FILE *infp, *outfp;
const int buffer_size = 1024*1024;
char *inbuffer;
char *outbuffer;
int numr,numw;
if(argc<2) usage(argv[0]);
infname = argv[1];
if(!(infp=fopen(infname, "rb")))
{
fprintf(stderr, "ERROR: fopen(%s)\n", argv[1]);
exit(1);
}
if(argc>2) outfname=argv[2];
else
{
if(!(outfname=(char*)malloc(strlen(infname)+5)))
{
fprintf(stderr, "ERROR: malloc failed\n");
exit(1);
}
strcpy(outfname, argv[1]);
strcat(outfname, ".xor");
}
if(!(outfp=fopen(outfname, "wb")))
{
fprintf(stderr, "ERROR: fopen(%s)\n", outfname);
exit(1);
}
//key = (const unsigned char*)getpass("Please enter a key: ");
printf("Please enter a key: ");
scanf("%s", key);
inbuffer = (char*)malloc(buffer_size);
if(!inbuffer)
{
fprintf(stderr, "ERROR: buffer malloc failed\n");
exit(1);
}
outbuffer = (char*)malloc(buffer_size);
if(!outbuffer)
{
fprintf(stderr, "ERROR: buffer malloc failed\n");
exit(1);
}
while(!feof(infp))
{
numr=fread(inbuffer,1,buffer_size,infp);
if(numr!=buffer_size)
{
if(ferror(infp)!=0)
{
fprintf(stderr,"read file error.\n");
exit(1);
}
else if(feof(infp)!=0);
}
xorcipher(key, inbuffer, outbuffer, numr);
numw=fwrite(outbuffer,1,numr,outfp);
if(numw!=numr)
{
fprintf(stderr,"write file error.\n");
exit(1);
}
}
fclose(outfp);
fclose(infp);
free(inbuffer);
free(outbuffer);
if(argc<3) free(outfname);
return 0;
}
