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first basic Finished PDU impl

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This commit is contained in:
Robin Müller
2023-06-12 03:57:38 +02:00
parent eb6bc4b8a8
commit 02675ba086
7 changed files with 333 additions and 43 deletions
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14
src/cfdp/pdu/metadata.rs
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@ -1,5 +1,8 @@
use crate::cfdp::lv::Lv;
use crate::cfdp::pdu::{read_fss_field, write_fss_field, FileDirectiveType, PduError, PduHeader};
use crate::cfdp::pdu::{
generic_length_checks_pdu_deserialization, read_fss_field, write_fss_field, FileDirectiveType,
PduError, PduHeader,
};
use crate::cfdp::tlv::Tlv;
use crate::cfdp::{ChecksumType, CrcFlag, LargeFileFlag, PduType};
use crate::{ByteConversionError, SizeMissmatch, CRC_CCITT_FALSE};
@ -242,14 +245,7 @@ impl<'src_name, 'dest_name, 'opts> MetadataPdu<'src_name, 'dest_name, 'opts> {
if is_large_file {
min_expected_len += 4;
}
min_expected_len = core::cmp::max(min_expected_len, pdu_header.pdu_len());
if buf.len() < min_expected_len {
return Err(ByteConversionError::FromSliceTooSmall(SizeMissmatch {
found: buf.len(),
expected: min_expected_len,
})
.into());
}
generic_length_checks_pdu_deserialization(buf, min_expected_len, full_len_without_crc)?;
let directive_type = FileDirectiveType::try_from(buf[current_idx]).map_err(|_| {
PduError::InvalidDirectiveType((buf[current_idx], FileDirectiveType::MetadataPdu))
})?;