// prepare chunk for uploading: mac and encrypt
bool HttpReqUL::prepare(FileAccess* fa, const char* tempurl, SymmCipher* key,
chunkmac_map* macs, uint64_t ctriv, m_off_t pos,
m_off_t npos)
{
size = (unsigned)(npos - pos);
if (!fa->fread(out, size, (-(int)size) & (SymmCipher::BLOCKSIZE - 1), pos))
{
return false;
}
byte mac[SymmCipher::BLOCKSIZE] = { 0 };
char buf[256];
snprintf(buf, sizeof buf, "%s/%" PRIu64, tempurl, pos);
setreq(buf, REQ_BINARY);
key->ctr_crypt((byte*)out->data(), size, pos, ctriv, mac, 1);
memcpy((*macs)[pos].mac, mac, sizeof mac);
// unpad for POSTing
out->resize(size);
return true;
}
// prepare file chunk download
bool HttpReqDL::prepare(FileAccess* fa, const char* tempurl, SymmCipher* key,
chunkmac_map* macs, uint64_t ctriv, m_off_t pos,
m_off_t npos)
{
char urlbuf[256];
snprintf(urlbuf, sizeof urlbuf, "%s/%" PRIu64 "-%" PRIu64, tempurl, pos, npos - 1);
setreq(urlbuf, REQ_BINARY);
dlpos = pos;
size = (unsigned)(npos - pos);
if (!buf || buflen != size)
{
// (re)allocate buffer
if (buf)
{
delete[] buf;
}
buf = new byte[(size + SymmCipher::BLOCKSIZE - 1) & - SymmCipher::BLOCKSIZE];
buflen = size;
}
return true;
}
static void
recalc_tty_req(Tty *tty)
{
setreq(tty->bus, TTY, tty->tto_flag || tty->tti_flag ? tty->pia : 0);
}