int main (int argc, char **argv) {
int32_t i = 0;
struct message msg;
msg.size = 0;
memset(msg.coded, '\0', sizeof msg.coded);
memset(msg.original, '\0', sizeof msg.coded);
printf("%s\n\t%s\n\t%s\n\n%s",
"Welcome to DC612 1-Day Event",
"Crypto Lvl 1",
"What type of cipher is this, and what are the keys?",
"Input: ");
fflush(stdout);
if (!fgets(msg.original, sizeof msg.original, stdin)) {
printf("%s\n", "You need some from of input.");
exit(1);
}
msg.original[sizeof msg.original - 1] = '\0';
for (i=0; i<strlen(msg.original); i++) {
if (strchr(CIPHER_SPECIAL_CHARS, msg.original[i])!=NULL)
msg.coded[i] = msg.original[i];
else if (islower(msg.original[i]))
msg.coded[i] = TO_CHAR((((int)(msg.original[i]-'a') + LOW_SHIFT) % NUMBER_OF_LETTERS) + 'a');
else if (isupper(msg.original[i]))
msg.coded[i] = TO_CHAR((((int)(msg.original[i]-'A') + HIGH_SHIFT) % NUMBER_OF_LETTERS) + 'A');
else if (isdigit(msg.original[i]))
msg.coded[i] = TO_CHAR(((int)(msg.original[i]-'0') + DEC_SHIFT) % NUMBER_OF_DIGITS + '0');
else {
msg.original[i] = '\0';
msg.coded[i] = '\0';
break;
}
}
msg.coded[sizeof msg.coded - 1] = '\0';
printf("%s %s - ","Plaintext:", msg.original);
for (i=0; i<strlen(msg.original); i++)
printf("\\%d", msg.original[i]);
printf("\n");
printf("%s %s - ", "Ciphertext:", msg.coded);
for (i=0; i<strlen(msg.coded); i++)
printf("\\%d", msg.coded[i]);
printf("\n");
exit(0);
}
wi_status wi_parse_length(wi_t self, const char *buf, size_t *to_length) {
if (!buf || !to_length) {
return WI_ERROR;
}
*to_length = (
((((unsigned char) buf[0]) & 0xFF) << 24) |
((((unsigned char) buf[1]) & 0xFF) << 16) |
((((unsigned char) buf[2]) & 0xFF) << 8) |
(((unsigned char) buf[3]) & 0xFF));
if (MAX_BODY_LENGTH > 0 && *to_length > MAX_BODY_LENGTH) {
#define TO_CHAR(c) ((c) >= ' ' && (c) < '~' ? (c) : '.')
return self->on_error(self, "Invalid packet header "
"0x%x%x%x%x == %c%c%c%c == %zd",
buf[0], buf[1], buf[2], buf[3],
TO_CHAR(buf[0]), TO_CHAR(buf[1]),
TO_CHAR(buf[2]), TO_CHAR(buf[3]),
*to_length);
}
return WI_SUCCESS;
}
int Encodings::toBytes(int encoding, wchar wc, byte *dest){
if (encoding < -6 || encoding == -1 || encoding >= encNamesNum)
throw UnsupportedEncodingException(SString(encoding));
if (encoding >= 0){
dest[0] = TO_CHAR(encoding, wc);
return 1;
};
if (encoding == ENC_UTF8){
int dpos = 0;
if (wc <= 0x7F){
dest[dpos] = wc & 0x7F;
};
if (wc > 0x7F && wc <= 0x7FF){
dest[dpos] = 0xC0 + (wc>>6);
dpos++;
dest[dpos] = 0x80 + (wc&0x3F);
};
