feat: Add support for NTFS extra field

Cargo.toml

@@ -36,6 +36,7 @@ flate2 = { version = "1.0", default-features = false, optional = true }
 indexmap = "2"
 hmac = { version = "0.12", optional = true, features = ["reset"] }
 memchr = "2.7"
+nt-time = { version = "0.10.6", optional = true }
 pbkdf2 = { version = "0.12", optional = true }
 rand = { version = "0.8", optional = true }
 sha1 = { version = "0.10", optional = true }
@@ -76,6 +77,7 @@ deflate-miniz = ["deflate", "deflate-flate2"]
 deflate-zlib = ["flate2/zlib", "deflate-flate2"]
 deflate-zlib-ng = ["flate2/zlib-ng", "deflate-flate2"]
 deflate-zopfli = ["zopfli", "_deflate-any"]
+nt-time = ["dep:nt-time"]
 lzma = ["lzma-rs/stream"]
 unreserved = []
 xz = ["lzma-rs/raw_decoder"]

README.md

@@ -44,6 +44,7 @@ The features available are:
 * `bzip2`: Enables the BZip2 compression algorithm.
 * `time`: Enables features using the [time](https://github.com/rust-lang-deprecated/time) crate.
 * `chrono`: Enables converting last-modified `zip::DateTime` to and from `chrono::NaiveDateTime`.
+* `nt-time`: Enables returning timestamps stored in the NTFS extra field as `nt_time::FileTime`.
 * `zstd`: Enables the Zstandard compression algorithm.
 
 By default `aes-crypto`, `bzip2`, `deflate`, `deflate64`, `lzma`, `time` and `zstd` are enabled.

src/extra_fields/mod.rs

@@ -17,14 +17,19 @@ impl ExtraFieldVersion for LocalHeaderVersion {}
 impl ExtraFieldVersion for CentralHeaderVersion {}
 
 mod extended_timestamp;
+mod ntfs;
 mod zipinfo_utf8;
 
 pub use extended_timestamp::*;
+pub use ntfs::Ntfs;
 pub use zipinfo_utf8::*;
 
 /// contains one extra field
 #[derive(Debug, Clone)]
 pub enum ExtraField {
+    /// NTFS extra field
+    Ntfs(Ntfs),
+
     /// extended timestamp, as described in <https://libzip.org/specifications/extrafld.txt>
     ExtendedTimestamp(ExtendedTimestamp),
 }

src/extra_fields/ntfs.rs

@@ -0,0 +1,97 @@
+use std::io::Read;
+
+use crate::{
+    result::{ZipError, ZipResult},
+    unstable::LittleEndianReadExt,
+};
+
+/// The NTFS extra field as described in [PKWARE's APPNOTE.TXT v6.3.9].
+///
+/// This field stores [Windows file times], which are 64-bit unsigned integer
+/// values that represents the number of 100-nanosecond intervals that have
+/// elapsed since "1601-01-01 00:00:00 UTC".
+///
+/// [PKWARE's APPNOTE.TXT v6.3.9]: https://pkware.cachefly.net/webdocs/casestudies/APPNOTE.TXT
+/// [Windows file times]: https://docs.microsoft.com/en-us/windows/win32/sysinfo/file-times
+#[derive(Clone, Debug)]
+pub struct Ntfs {
+    mtime: u64,
+    atime: u64,
+    ctime: u64,
+}
+
+impl Ntfs {
+    /// Creates a NTFS extra field struct by reading the required bytes from the
+    /// reader.
+    ///
+    /// This method assumes that the length has already been read, therefore it
+    /// must be passed as an argument.
+    pub fn try_from_reader<R>(reader: &mut R, len: u16) -> ZipResult<Self>
+    where
+        R: Read,
+    {
+        if len != 32 {
+            return Err(ZipError::UnsupportedArchive(
+                "NTFS extra field has an unsupported length",
+            ));
+        }
+
+        // Read reserved for future use.
+        let _ = reader.read_u32_le()?;
+
+        let tag = reader.read_u16_le()?;
+        if tag != 0x0001 {
+            return Err(ZipError::UnsupportedArchive(
+                "NTFS extra field has an unsupported attribute tag",
+            ));
+        }
+        let size = reader.read_u16_le()?;
+        if size != 24 {
+            return Err(ZipError::UnsupportedArchive(
+                "NTFS extra field has an unsupported attribute size",
+            ));
+        }
+
+        let mtime = reader.read_u64_le()?;
+        let atime = reader.read_u64_le()?;
+        let ctime = reader.read_u64_le()?;
+        Ok(Self {
+            mtime,
+            atime,
+            ctime,
+        })
+    }
+
+    /// Returns the file last modification time as a file time.
+    pub fn mtime(&self) -> u64 {
+        self.mtime
+    }
+
+    /// Returns the file last modification time as a file time.
+    #[cfg(feature = "nt-time")]
+    pub fn modified_file_time(&self) -> nt_time::FileTime {
+        nt_time::FileTime::new(self.mtime)
+    }
+
+    /// Returns the file last access time as a file time.
+    pub fn atime(&self) -> u64 {
+        self.atime
+    }
+
+    /// Returns the file last access time as a file time.
+    #[cfg(feature = "nt-time")]
+    pub fn accessed_file_time(&self) -> nt_time::FileTime {
+        nt_time::FileTime::new(self.atime)
+    }
+
+    /// Returns the file creation time as a file time.
+    pub fn ctime(&self) -> u64 {
+        self.ctime
+    }
+
+    /// Returns the file creation time as a file time.
+    #[cfg(feature = "nt-time")]
+    pub fn created_file_time(&self) -> nt_time::FileTime {
+        nt_time::FileTime::new(self.ctime)
+    }
+}

src/read.rs

@@ -5,7 +5,7 @@ use crate::aes::{AesReader, AesReaderValid};
 use crate::compression::{CompressionMethod, Decompressor};
 use crate::cp437::FromCp437;
 use crate::crc32::Crc32Reader;
-use crate::extra_fields::{ExtendedTimestamp, ExtraField};
+use crate::extra_fields::{ExtendedTimestamp, ExtraField, Ntfs};
 use crate::read::zip_archive::{Shared, SharedBuilder};
 use crate::result::{ZipError, ZipResult};
 use crate::spec::{self, CentralDirectoryEndInfo, DataAndPosition, FixedSizeBlock, Pod};
@@ -1249,6 +1249,11 @@ pub(crate) fn parse_single_extra_field<R: Read>(
             reader.read_exact(&mut vec![0u8; leftover_len])?;
             return Ok(true);
         }
+        0x000a => {
+            // NTFS extra field
+            file.extra_fields
+                .push(ExtraField::Ntfs(Ntfs::try_from_reader(reader, len)?));
+        }
         0x9901 => {
             // AES
             if len != 7 {

src/write.rs

@@ -536,10 +536,10 @@ impl FileOptions<'_, ExtendedFileOptions> {
     /// Removes the extra data fields.
     #[must_use]
     pub fn clear_extra_data(mut self) -> Self {
-        if self.extended_options.extra_data.len() > 0 {
+        if !self.extended_options.extra_data.is_empty() {
             self.extended_options.extra_data = Arc::new(vec![]);
         }
-        if self.extended_options.central_extra_data.len() > 0 {
+        if !self.extended_options.central_extra_data.is_empty() {
             self.extended_options.central_extra_data = Arc::new(vec![]);
         }
         self

tests/zip_extended_timestamp.rs

@@ -8,12 +8,10 @@ fn test_extended_timestamp() {
     let mut archive = ZipArchive::new(io::Cursor::new(v)).expect("couldn't open test zip file");
 
     for field in archive.by_name("test.txt").unwrap().extra_data_fields() {
-        match field {
-            zip::ExtraField::ExtendedTimestamp(ts) => {
-                assert!(ts.ac_time().is_none());
-                assert!(ts.cr_time().is_none());
-                assert_eq!(ts.mod_time().unwrap(), 1714635025);
-            }
+        if let zip::ExtraField::ExtendedTimestamp(ts) = field {
+            assert!(ts.ac_time().is_none());
+            assert!(ts.cr_time().is_none());
+            assert_eq!(ts.mod_time().unwrap(), 1714635025);
         }
     }
 }

tests/zip_ntfs.rs

@@ -0,0 +1,29 @@
+use std::io;
+
+use zip::ZipArchive;
+
+#[test]
+fn test_ntfs() {
+    let mut v = Vec::new();
+    v.extend_from_slice(include_bytes!("../tests/data/ntfs.zip"));
+    let mut archive = ZipArchive::new(io::Cursor::new(v)).expect("couldn't open test zip file");
+
+    for field in archive.by_name("test.txt").unwrap().extra_data_fields() {
+        if let zip::ExtraField::Ntfs(ts) = field {
+            assert_eq!(ts.mtime(), 133_813_273_144_169_390);
+            #[cfg(feature = "nt-time")]
+            assert_eq!(
+                time::OffsetDateTime::try_from(ts.modified_file_time()).unwrap(),
+                time::macros::datetime!(2025-01-14 11:21:54.416_939_000 UTC)
+            );
+
+            assert_eq!(ts.atime(), 0);
+            #[cfg(feature = "nt-time")]
+            assert_eq!(ts.accessed_file_time(), nt_time::FileTime::NT_TIME_EPOCH);
+
+            assert_eq!(ts.ctime(), 0);
+            #[cfg(feature = "nt-time")]
+            assert_eq!(ts.created_file_time(), nt_time::FileTime::NT_TIME_EPOCH);
+        }
+    }
+}