/**
* \brief run the magic check
*
* \param file the file
*
* \retval -1 error
* \retval 0 ok
*/
int FilemagicThreadLookup(magic_t *ctx, File *file)
{
if (ctx == NULL || file == NULL || file->chunks_head == NULL) {
SCReturnInt(-1);
}
/* initial chunk already matching our requirement */
if (file->chunks_head->len >= FILEMAGIC_MIN_SIZE) {
file->magic = MagicThreadLookup(ctx, file->chunks_head->data, FILEMAGIC_MIN_SIZE);
} else {
uint8_t *buf = SCMalloc(FILEMAGIC_MIN_SIZE);
uint32_t size = 0;
if (likely(buf != NULL)) {
FileData *ffd = file->chunks_head;
for ( ; ffd != NULL; ffd = ffd->next) {
uint32_t copy_len = ffd->len;
if (size + ffd->len > FILEMAGIC_MIN_SIZE)
copy_len = FILEMAGIC_MIN_SIZE - size;
memcpy(buf + size, ffd->data, copy_len);
size += copy_len;
if (size >= FILEMAGIC_MIN_SIZE) {
file->magic = MagicThreadLookup(ctx, buf, size);
break;
}
/* file is done but smaller than FILEMAGIC_MIN_SIZE */
if (ffd->next == NULL && file->state >= FILE_STATE_CLOSED) {
file->magic = MagicThreadLookup(ctx, buf, size);
break;
}
}
SCFree(buf);
}
}
SCReturnInt(0);
}
/**
* \brief run the magic check
*
* \param file the file
*
* \retval -1 error
* \retval 0 ok
*/
int FilemagicThreadLookup(magic_t *ctx, File *file)
{
if (ctx == NULL || file == NULL || FileSize(file) == 0) {
SCReturnInt(-1);
}
const uint8_t *data = NULL;
uint32_t data_len = 0;
uint64_t offset = 0;
StreamingBufferGetData(file->sb,
&data, &data_len, &offset);
if (offset == 0) {
if (FileSize(file) >= FILEMAGIC_MIN_SIZE) {
file->magic = MagicThreadLookup(ctx, data, data_len);
} else if (file->state >= FILE_STATE_CLOSED) {
file->magic = MagicThreadLookup(ctx, data, data_len);
}
}
SCReturnInt(0);
}
