main(int argc, char**argv)
{
FILE *fp;
struct stat stat_buf;
char *datap, *newdatap;
int datalen, newdatalen;
int cryptkey_len = sizeof pm9screw_mycryptkey / 2;
char oldfilename[256];
int i;
if (argc != 2) {
fprintf(stderr, "Usage: filename.\n");
exit(0);
}
fp = fopen(argv[1], "r");
if (fp == NULL) {
fprintf(stderr, "File not found(%s)\n", argv[1]);
exit(0);
}
fstat(fileno(fp), &stat_buf);
datalen = stat_buf.st_size;
datap = (char*)malloc(datalen + PM9SCREW_LEN);
fread(datap, datalen, 1, fp);
fclose(fp);
sprintf(oldfilename, "%s.screw", argv[1]);
if (memcmp(datap, PM9SCREW, PM9SCREW_LEN) == 0) {
fprintf(stderr, "Already Crypted(%s)\n", argv[1]);
exit(0);
}
fp = fopen(oldfilename, "w");
if (fp == NULL) {
fprintf(stderr, "Can not create backup file(%s)\n", oldfilename);
exit(0);
}
fwrite(datap, datalen, 1, fp);
fclose(fp);
newdatap = zencode(datap, datalen, &newdatalen);
for(i=0; i<newdatalen; i++) {
newdatap[i] = (char)pm9screw_mycryptkey[(newdatalen - i) % cryptkey_len] ^ (~(newdatap[i]));
}
fp = fopen(argv[1], "w");
if (fp == NULL) {
fprintf(stderr, "Can not create crypt file(%s)\n", oldfilename);
exit(0);
}
fwrite(PM9SCREW, PM9SCREW_LEN, 1, fp);
fwrite(newdatap, newdatalen, 1, fp);
fclose(fp);
fprintf(stderr, "Success Crypting(%s)\n", argv[1]);
free(newdatap);
free(datap);
}
local int zipFlushWriteBuffer(zip_internal* zi)
{
int err=ZIP_OK;
if (zi->ci.encrypt != 0)
{
#ifndef NOCRYPT
uInt i;
int t;
for (i=0;i<zi->ci.pos_in_buffered_data;i++)
zi->ci.buffered_data[i] = zencode(zi->ci.keys, zi->ci.pcrc_32_tab,
zi->ci.buffered_data[i],t);
#endif
}
if (ZWRITE(zi->z_filefunc,zi->filestream,zi->ci.buffered_data,zi->ci.pos_in_buffered_data)
!=zi->ci.pos_in_buffered_data)
err = ZIP_ERRNO;
zi->ci.pos_in_buffered_data = 0;
return err;
}
