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nbss: add parser tests #5692

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nbss: add parser tests #5692

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136 changes: 136 additions & 0 deletions rust/src/smb/nbss_records.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -87,3 +87,139 @@ named!(pub parse_nbss_record_partial<NbssRecord>,
data:data,
})
));

#[cfg(test)]
mod tests {

use super::*;

#[test]
fn test_parse_nbss_record() {
let buff:&[u8] = &[
/* message type */ 0x00,
/* length */ 0x00, 0x00, 0x55,
/* data */ 0xff, 0x53, 0x4d, 0x42, 0x72, 0x00, 0x00, 0x00, 0x00,
0x98, 0x53, 0xc8, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xff,
0xfe, 0x00, 0x00, 0x00, 0x00, 0x11, 0x05, 0x00, 0x03,
0x0a, 0x00, 0x01, 0x00, 0x04, 0x11, 0x00, 0x00, 0x00,
0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0xfd, 0xe3,
0x00, 0x80, 0x2a, 0x55, 0xc4, 0x38, 0x89, 0x03, 0xcd,
0x01, 0x2c, 0x01, 0x00, 0x10, 0x00, 0xfe, 0x82, 0xf1,
0x64, 0x0b, 0x66, 0xba, 0x4a, 0xbb, 0x81, 0xe1, 0xea,
0x54, 0xae, 0xb8, 0x66];

let result = parse_nbss_record(&buff);
match result {
Ok((remainder, p)) => {
assert_eq!(p.message_type, NBSS_MSGTYPE_SESSION_MESSAGE);
assert_eq!(p.length, 85);
assert_eq!(p.data.len(), 85);
assert_ne!(p.message_type, NBSS_MSGTYPE_KEEP_ALIVE);

// this packet had an acceptable length, we don't need more
assert_eq!(p.needs_more(), false);

// does this really look like smb?
assert_eq!(p.is_smb(), true);

// there should be nothing left
assert_eq!(remainder.len(), 0);
}
Err(nom::Err::Error((remainder, err))) => {
panic!("Result should not be an error: {:?}.", err);
}
Err(nom::Err::Incomplete(_)) => {
panic!("Result should not have been incomplete.");
}
_ => {
panic!("Unexpected behavior!");
}
}

// Non-SMB packet scenario
let buff_not_smb:&[u8] = &[
/* message type */ 0x00,
/* length */ 0x00, 0x00, 0x55,
/* data !SMB */ 0xff, 0x52, 0x4e, 0x41, 0x72, 0x00, 0x00, 0x00, 0x00,
0x98, 0x53, 0xc8, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xff,
0xfe, 0x00, 0x00, 0x00, 0x00, 0x11, 0x05, 0x00, 0x03,
0x0a, 0x00, 0x01, 0x00, 0x04, 0x11, 0x00, 0x00, 0x00,
0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0xfd, 0xe3,
0x00, 0x80, 0x2a, 0x55, 0xc4, 0x38, 0x89, 0x03, 0xcd,
0x01, 0x2c, 0x01, 0x00, 0x10, 0x00, 0xfe, 0x82, 0xf1,
0x64, 0x0b, 0x66, 0xba, 0x4a, 0xbb, 0x81, 0xe1, 0xea,
0x54, 0xae, 0xb8, 0x66];

let result_not_smb = parse_nbss_record(&buff_not_smb);
match result_not_smb {
Ok((remainder, p_not_smb)) => {
assert_eq!(p_not_smb.message_type, NBSS_MSGTYPE_SESSION_MESSAGE);
assert_eq!(p_not_smb.length, 85);
assert_eq!(p_not_smb.data.len(), 85);
assert_ne!(p_not_smb.message_type, NBSS_MSGTYPE_KEEP_ALIVE);

// this packet had an acceptable length, we don't need more
assert_eq!(p_not_smb.needs_more(), false);

// this packet doesn't have the SMB keyword
// is_smb must be false
assert_eq!(p_not_smb.is_smb(), false);

// there should be nothing left
assert_eq!(remainder.len(), 0);
}
Err(nom::Err::Error((remainder, err))) => {
panic!("Result should not be an error: {:?}.", err);
}
Err(nom::Err::Incomplete(_)) => {
panic!("Result should not have been incomplete.");
}
_ => {
panic!("Unexpected behavior!");
}
}
}

#[test]
fn test_parse_nbss_record_partial() {
let buff:&[u8] = &[
/* message type */ 0x00,
/* length */ 0x00, 0x00, 0x29,
/* data < lenght*/ 0xff, 0x53, 0x4d, 0x42, 0x04, 0x00, 0x00, 0x00,
0x00, 0x18, 0x43, 0xc8, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x02, 0x08, 0xbd, 0x20, 0x02, 0x08, 0x06, 0x00,
0x02, 0x40, 0xff, 0xff, 0xff, 0xff, 0x00, 0x00];

let result = parse_nbss_record_partial(&buff);
match result {
Ok((remainder, p)) => {
assert_eq!(p.message_type, NBSS_MSGTYPE_SESSION_MESSAGE);
assert_eq!(p.length, 41);
assert_ne!(p.data.len(), 41);
assert_ne!(p.message_type, NBSS_MSGTYPE_KEEP_ALIVE);

// this packet had an acceptable length, we don't need more
assert_eq!(p.needs_more(), false);

// does this really look like smb?
assert_eq!(p.is_smb(), true);

// there should be nothing left
assert_eq!(remainder.len(), 0);
}
Err(nom::Err::Error((remainder, err))) => {
panic!("Result should not be an error: {:?}.", err);
}
Err(nom::Err::Incomplete(_)) => {
panic!("Result should not have returned as incomplete.");
}
_ => {
panic!("Unexpected behavior!");
}
}

}
}