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Initial implementation of MD5 checksums for session and single data files.

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To be activated by macro Libisofs_with_checksumS.
New AAIP attributes "isfs.ca" and "isofs.cx".
New API calls iso_image_get_session_md5() and iso_file_get_md5().
This commit is contained in:
Thomas Schmitt
2009-08-10 13:56:06 +02:00
parent 55690756ae
commit b5f4a66c59
15 changed files with 1349 additions and 40 deletions
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39
libisofs/util.c
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@ -1489,3 +1489,42 @@ int iso_init_locale(int flag)
}
int iso_util_encode_len_bytes(uint32_t data, char *buffer, int data_len,
int *result_len, int flag)
{
uint32_t x;
int i, l;
char *wpt = buffer;
if (data_len <= 0) {
x = data;
for (i = 0; i < 4 && x != 0; i++)
x = x >> 8;
l = i;
if (l == 0)
l = 1;
} else
l = data_len;
*((unsigned char *) (wpt++)) = l;
for (i = 0; i < l; i++)
*((unsigned char *) (wpt++)) = data >> (8 * (l - i - 1));
*result_len = l + 1;
return ISO_SUCCESS;
}
int iso_util_decode_len_bytes(uint32_t *data, char *buffer, int *data_len,
int buffer_len, int flag)
{
int i;
*data = 0;
*data_len = ((unsigned char *) buffer)[0];
if (*data_len > buffer_len - 1)
*data_len = buffer_len - 1;
for (i = 1; i <= *data_len; i++)
*data = (*data << 8) | ((unsigned char *) buffer)[i];
return ISO_SUCCESS;
}