bool RarVolume::DecryptRead(DiskFile& file, void* buffer, int64 size)
{
while (size > 0)
{
if (m_decryptPos >= 16)
{
uint8 buf[16];
if (file.Read(&buf, sizeof(buf)) != sizeof(buf)) return false;
m_decryptPos = 0;
if (!DecryptBuf(buf, m_decryptBuf)) return false;
}
uint8 remainingBuf = 16 - m_decryptPos;
uint8 len = size <= remainingBuf ? (uint8)size : remainingBuf;
memcpy(buffer, m_decryptBuf + m_decryptPos, len);
m_decryptPos += len;
size -= len;
buffer = (char*)buffer + len;
}
return true;
}
static int
pof_handle_data(hysdn_card * card, int datlen)
{
struct boot_data *boot = card->boot; /* pointer to boot specific data */
long l;
uchar *imgp;
int img_len;
/* handle the different record types */
switch (boot->pof_recid) {
case TAG_TIMESTMP:
if (card->debug_flags & LOG_POF_RECORD)
hysdn_addlog(card, "POF created %s", boot->buf.PofTime.DateTimeText);
break;
case TAG_CBOOTDTA:
DecryptBuf(boot, datlen); /* we need to encrypt the buffer */
case TAG_BOOTDTA:
if (card->debug_flags & LOG_POF_RECORD)
hysdn_addlog(card, "POF got %s len=%d offs=0x%lx",
(boot->pof_recid == TAG_CBOOTDTA) ? "CBOOTDATA" : "BOOTDTA",
datlen, boot->pof_recoffset);
if (boot->pof_reclen != POF_BOOT_LOADER_TOTAL_SIZE) {
boot->last_error = EPOF_BAD_IMG_SIZE; /* invalid length */
return (boot->last_error);
}
imgp = boot->buf.BootBuf; /* start of buffer */
img_len = datlen; /* maximum length to transfer */
l = POF_BOOT_LOADER_OFF_IN_PAGE -
(boot->pof_recoffset & (POF_BOOT_LOADER_PAGE_SIZE - 1));
if (l > 0) {
/* buffer needs to be truncated */
imgp += l; /* advance pointer */
img_len -= l; /* adjust len */
}
/* at this point no special handling for data wrapping over buffer */
/* is necessary, because the boot image always will be adjusted to */
/* match a page boundary inside the buffer. */
/* The buffer for the boot image on the card is filled in 2 cycles */
/* first the 1024 hi-words are put in the buffer, then the low 1024 */
/* word are handled in the same way with different offset. */
if (img_len > 0) {
/* data available for copy */
if ((boot->last_error =
card->writebootimg(card, imgp,
(boot->pof_recoffset > POF_BOOT_LOADER_PAGE_SIZE) ? 2 : 0)) < 0)
return (boot->last_error);
}
break; /* end of case boot image hi/lo */
case TAG_CABSDATA:
DecryptBuf(boot, datlen); /* we need to encrypt the buffer */
case TAG_ABSDATA:
if (card->debug_flags & LOG_POF_RECORD)
hysdn_addlog(card, "POF got %s len=%d offs=0x%lx",
(boot->pof_recid == TAG_CABSDATA) ? "CABSDATA" : "ABSDATA",
datlen, boot->pof_recoffset);
if ((boot->last_error = card->writebootseq(card, boot->buf.BootBuf, datlen) < 0))
return (boot->last_error); /* error writing data */
if (boot->pof_recoffset + datlen >= boot->pof_reclen)
return (card->waitpofready(card)); /* data completely spooled, wait for ready */
break; /* end of case boot seq data */
default:
if (card->debug_flags & LOG_POF_RECORD)
hysdn_addlog(card, "POF got data(id=0x%lx) len=%d offs=0x%lx", boot->pof_recid,
datlen, boot->pof_recoffset);
break; /* simply skip record */
} /* switch boot->pof_recid */
return (0);
} /* pof_handle_data */
static int
pof_handle_data(hysdn_card * card, int datlen)
{
struct boot_data *boot = card->boot;
long l;
unsigned char *imgp;
int img_len;
switch (boot->pof_recid) {
case TAG_TIMESTMP:
if (card->debug_flags & LOG_POF_RECORD)
hysdn_addlog(card, "POF created %s", boot->buf.PofTime.DateTimeText);
break;
case TAG_CBOOTDTA:
DecryptBuf(boot, datlen);
case TAG_BOOTDTA:
if (card->debug_flags & LOG_POF_RECORD)
hysdn_addlog(card, "POF got %s len=%d offs=0x%lx",
(boot->pof_recid == TAG_CBOOTDTA) ? "CBOOTDATA" : "BOOTDTA",
datlen, boot->pof_recoffset);
if (boot->pof_reclen != POF_BOOT_LOADER_TOTAL_SIZE) {
boot->last_error = EPOF_BAD_IMG_SIZE;
return (boot->last_error);
}
imgp = boot->buf.BootBuf;
img_len = datlen;
l = POF_BOOT_LOADER_OFF_IN_PAGE -
(boot->pof_recoffset & (POF_BOOT_LOADER_PAGE_SIZE - 1));
if (l > 0) {
imgp += l;
img_len -= l;
}
if (img_len > 0) {
if ((boot->last_error =
card->writebootimg(card, imgp,
(boot->pof_recoffset > POF_BOOT_LOADER_PAGE_SIZE) ? 2 : 0)) < 0)
return (boot->last_error);
}
break;
case TAG_CABSDATA:
DecryptBuf(boot, datlen);
case TAG_ABSDATA:
if (card->debug_flags & LOG_POF_RECORD)
hysdn_addlog(card, "POF got %s len=%d offs=0x%lx",
(boot->pof_recid == TAG_CABSDATA) ? "CABSDATA" : "ABSDATA",
datlen, boot->pof_recoffset);
if ((boot->last_error = card->writebootseq(card, boot->buf.BootBuf, datlen) < 0))
return (boot->last_error);
if (boot->pof_recoffset + datlen >= boot->pof_reclen)
return (card->waitpofready(card));
break;
default:
if (card->debug_flags & LOG_POF_RECORD)
hysdn_addlog(card, "POF got data(id=0x%lx) len=%d offs=0x%lx", boot->pof_recid,
datlen, boot->pof_recoffset);
break;
}
return (0);
}
