[pbs-devel] [PATCH v5 pxar 06/62] decoder/accessor: add optional payload input stream
Christian Ebner
c.ebner at proxmox.com
Tue May 7 17:51:48 CEST 2024
Implement an optional redirection to read the payload for regular files
from a different input stream.
This allows to decode split stream archives.
Signed-off-by: Christian Ebner <c.ebner at proxmox.com>
---
changes since version 4:
- no changes
examples/apxar.rs | 2 +-
src/accessor/aio.rs | 10 +++--
src/accessor/mod.rs | 78 ++++++++++++++++++++++++++++++------
src/accessor/sync.rs | 8 ++--
src/decoder/aio.rs | 14 ++++---
src/decoder/mod.rs | 94 ++++++++++++++++++++++++++++++++++++++------
src/decoder/sync.rs | 15 ++++---
src/lib.rs | 3 ++
tests/compat.rs | 3 +-
tests/simple/main.rs | 5 ++-
10 files changed, 188 insertions(+), 44 deletions(-)
diff --git a/examples/apxar.rs b/examples/apxar.rs
index 0c62242..d5eb04e 100644
--- a/examples/apxar.rs
+++ b/examples/apxar.rs
@@ -9,7 +9,7 @@ async fn main() {
.await
.expect("failed to open file");
- let mut reader = Decoder::from_tokio(file)
+ let mut reader = Decoder::from_tokio(file, None)
.await
.expect("failed to open pxar archive contents");
diff --git a/src/accessor/aio.rs b/src/accessor/aio.rs
index 98d7755..06167b4 100644
--- a/src/accessor/aio.rs
+++ b/src/accessor/aio.rs
@@ -39,7 +39,7 @@ impl<T: FileExt> Accessor<FileReader<T>> {
/// by a blocking file.
#[inline]
pub async fn from_file_and_size(input: T, size: u64) -> io::Result<Self> {
- Accessor::new(FileReader::new(input), size).await
+ Accessor::new(FileReader::new(input), size, None).await
}
}
@@ -75,7 +75,7 @@ where
input: T,
size: u64,
) -> io::Result<Accessor<FileRefReader<T>>> {
- Accessor::new(FileRefReader::new(input), size).await
+ Accessor::new(FileRefReader::new(input), size, None).await
}
}
@@ -85,9 +85,11 @@ impl<T: ReadAt> Accessor<T> {
///
/// Note that the `input`'s `SeqRead` implementation must always return `Poll::Ready` and is
/// not allowed to use the `Waker`, as this will cause a `panic!`.
- pub async fn new(input: T, size: u64) -> io::Result<Self> {
+ /// Optionally take the file payloads from the provided input stream rather than the regular
+ /// pxar stream.
+ pub async fn new(input: T, size: u64, payload_input: Option<(T, u64)>) -> io::Result<Self> {
Ok(Self {
- inner: accessor::AccessorImpl::new(input, size).await?,
+ inner: accessor::AccessorImpl::new(input, size, payload_input).await?,
})
}
diff --git a/src/accessor/mod.rs b/src/accessor/mod.rs
index 6a2de73..46afbe3 100644
--- a/src/accessor/mod.rs
+++ b/src/accessor/mod.rs
@@ -182,10 +182,11 @@ pub(crate) struct AccessorImpl<T> {
input: T,
size: u64,
caches: Arc<Caches>,
+ payload_input: Option<(T, Range<u64>)>,
}
impl<T: ReadAt> AccessorImpl<T> {
- pub async fn new(input: T, size: u64) -> io::Result<Self> {
+ pub async fn new(input: T, size: u64, payload_input: Option<(T, u64)>) -> io::Result<Self> {
if size < (size_of::<GoodbyeItem>() as u64) {
io_bail!("too small to contain a pxar archive");
}
@@ -194,6 +195,7 @@ impl<T: ReadAt> AccessorImpl<T> {
input,
size,
caches: Arc::new(Caches::default()),
+ payload_input: payload_input.map(|(input, size)| (input, 0..size)),
})
}
@@ -207,6 +209,9 @@ impl<T: ReadAt> AccessorImpl<T> {
self.size,
"/".into(),
Arc::clone(&self.caches),
+ self.payload_input
+ .as_ref()
+ .map(|(input, range)| (input as &dyn ReadAt, range.clone())),
)
.await
}
@@ -227,8 +232,15 @@ async fn get_decoder<T: ReadAt>(
input: T,
entry_range: Range<u64>,
path: PathBuf,
+ payload_input: Option<(T, Range<u64>)>,
) -> io::Result<DecoderImpl<SeqReadAtAdapter<T>>> {
- DecoderImpl::new_full(SeqReadAtAdapter::new(input, entry_range), path, true).await
+ DecoderImpl::new_full(
+ SeqReadAtAdapter::new(input, entry_range.clone()),
+ path,
+ true,
+ payload_input.map(|(input, range)| SeqReadAtAdapter::new(input, range)),
+ )
+ .await
}
// NOTE: This performs the Decoder::read_next_item() behavior! Keep in mind when changing!
@@ -236,6 +248,7 @@ async fn get_decoder_at_filename<T: ReadAt>(
input: T,
entry_range: Range<u64>,
path: PathBuf,
+ payload_input: Option<(T, Range<u64>)>,
) -> io::Result<(DecoderImpl<SeqReadAtAdapter<T>>, u64)> {
// Read the header, it should be a FILENAME, then skip over it and its length:
let header: format::Header = read_entry_at(&input, entry_range.start).await?;
@@ -251,7 +264,7 @@ async fn get_decoder_at_filename<T: ReadAt>(
}
Ok((
- get_decoder(input, entry_offset..entry_range.end, path).await?,
+ get_decoder(input, entry_offset..entry_range.end, path, payload_input).await?,
entry_offset,
))
}
@@ -263,6 +276,7 @@ impl<T: Clone + ReadAt> AccessorImpl<T> {
self.size,
"/".into(),
Arc::clone(&self.caches),
+ self.payload_input.clone(),
)
.await
}
@@ -274,6 +288,7 @@ impl<T: Clone + ReadAt> AccessorImpl<T> {
offset,
"/".into(),
Arc::clone(&self.caches),
+ self.payload_input.clone(),
)
.await
}
@@ -287,23 +302,30 @@ impl<T: Clone + ReadAt> AccessorImpl<T> {
self.input.clone(),
entry_range_info.entry_range.clone(),
PathBuf::new(),
+ self.payload_input.clone(),
)
.await?;
let entry = decoder
.next()
.await
.ok_or_else(|| io_format_err!("unexpected EOF while decoding file entry"))??;
+
Ok(FileEntryImpl {
input: self.input.clone(),
entry,
entry_range_info: entry_range_info.clone(),
caches: Arc::clone(&self.caches),
+ payload_input: self.payload_input.clone(),
})
}
/// Allow opening arbitrary contents from a specific range.
pub unsafe fn open_contents_at_range(&self, range: Range<u64>) -> FileContentsImpl<T> {
- FileContentsImpl::new(self.input.clone(), range)
+ if let Some((payload_input, _)) = &self.payload_input {
+ FileContentsImpl::new(payload_input.clone(), range)
+ } else {
+ FileContentsImpl::new(self.input.clone(), range)
+ }
}
/// Following a hardlink breaks a couple of conventions we otherwise have, particularly we will
@@ -326,9 +348,13 @@ impl<T: Clone + ReadAt> AccessorImpl<T> {
let link_offset = entry_file_offset - link_offset;
- let (mut decoder, entry_offset) =
- get_decoder_at_filename(self.input.clone(), link_offset..self.size, PathBuf::new())
- .await?;
+ let (mut decoder, entry_offset) = get_decoder_at_filename(
+ self.input.clone(),
+ link_offset..self.size,
+ PathBuf::new(),
+ self.payload_input.clone(),
+ )
+ .await?;
let entry = decoder
.next()
@@ -342,6 +368,7 @@ impl<T: Clone + ReadAt> AccessorImpl<T> {
EntryKind::File {
offset: Some(offset),
size,
+ ..
} => {
let meta_size = offset - link_offset;
let entry_end = link_offset + meta_size + size;
@@ -353,6 +380,7 @@ impl<T: Clone + ReadAt> AccessorImpl<T> {
entry_range: entry_offset..entry_end,
},
caches: Arc::clone(&self.caches),
+ payload_input: self.payload_input.clone(),
})
}
_ => io_bail!("hardlink does not point to a regular file"),
@@ -369,6 +397,7 @@ pub(crate) struct DirectoryImpl<T> {
table: Arc<[GoodbyeItem]>,
path: PathBuf,
caches: Arc<Caches>,
+ payload_input: Option<(T, Range<u64>)>,
}
impl<T: Clone + ReadAt> DirectoryImpl<T> {
@@ -378,6 +407,7 @@ impl<T: Clone + ReadAt> DirectoryImpl<T> {
end_offset: u64,
path: PathBuf,
caches: Arc<Caches>,
+ payload_input: Option<(T, Range<u64>)>,
) -> io::Result<DirectoryImpl<T>> {
let tail = Self::read_tail_entry(&input, end_offset).await?;
@@ -407,6 +437,7 @@ impl<T: Clone + ReadAt> DirectoryImpl<T> {
table: table.as_ref().map_or_else(|| Arc::new([]), Arc::clone),
path,
caches,
+ payload_input,
};
// sanity check:
@@ -502,6 +533,7 @@ impl<T: Clone + ReadAt> DirectoryImpl<T> {
None => self.path.clone(),
Some(file) => self.path.join(file),
},
+ self.payload_input.clone(),
)
.await
}
@@ -533,6 +565,7 @@ impl<T: Clone + ReadAt> DirectoryImpl<T> {
entry_range: self.entry_range(),
},
caches: Arc::clone(&self.caches),
+ payload_input: self.payload_input.clone(),
})
}
@@ -575,6 +608,10 @@ impl<T: Clone + ReadAt> DirectoryImpl<T> {
cur = next;
}
+ if let Some(cur) = cur.as_mut() {
+ cur.payload_input = self.payload_input.clone();
+ }
+
Ok(cur)
}
@@ -599,7 +636,9 @@ impl<T: Clone + ReadAt> DirectoryImpl<T> {
let cursor = self.get_cursor(index).await?;
if cursor.file_name == path {
- return Ok(Some(cursor.decode_entry().await?));
+ let mut entry = cursor.decode_entry().await?;
+ entry.payload_input = self.payload_input.clone();
+ return Ok(Some(entry));
}
dup += 1;
@@ -685,6 +724,7 @@ pub(crate) struct FileEntryImpl<T: Clone + ReadAt> {
entry: Entry,
entry_range_info: EntryRangeInfo,
caches: Arc<Caches>,
+ payload_input: Option<(T, Range<u64>)>,
}
impl<T: Clone + ReadAt> FileEntryImpl<T> {
@@ -698,6 +738,7 @@ impl<T: Clone + ReadAt> FileEntryImpl<T> {
self.entry_range_info.entry_range.end,
self.entry.path.clone(),
Arc::clone(&self.caches),
+ self.payload_input.clone(),
)
.await
}
@@ -711,15 +752,29 @@ impl<T: Clone + ReadAt> FileEntryImpl<T> {
EntryKind::File {
size,
offset: Some(offset),
+ payload_offset: None,
} => Ok(Some(offset..(offset + size))),
+ // Payload offset beats regular offset if some
+ EntryKind::File {
+ size,
+ offset: Some(_offset),
+ payload_offset: Some(payload_offset),
+ } => {
+ let start_offset = payload_offset + size_of::<format::Header>() as u64;
+ Ok(Some(start_offset..start_offset + size))
+ }
_ => Ok(None),
}
}
pub async fn contents(&self) -> io::Result<FileContentsImpl<T>> {
- match self.content_range()? {
- Some(range) => Ok(FileContentsImpl::new(self.input.clone(), range)),
- None => io_bail!("not a file"),
+ let range = self
+ .content_range()?
+ .ok_or_else(|| io_format_err!("not a file"))?;
+ if let Some((ref payload_input, _)) = self.payload_input {
+ Ok(FileContentsImpl::new(payload_input.clone(), range))
+ } else {
+ Ok(FileContentsImpl::new(self.input.clone(), range))
}
}
@@ -808,6 +863,7 @@ impl<'a, T: Clone + ReadAt> DirEntryImpl<'a, T> {
entry,
entry_range_info: self.entry_range_info.clone(),
caches: Arc::clone(&self.caches),
+ payload_input: self.dir.payload_input.clone(),
})
}
diff --git a/src/accessor/sync.rs b/src/accessor/sync.rs
index a777152..cd8dff0 100644
--- a/src/accessor/sync.rs
+++ b/src/accessor/sync.rs
@@ -31,7 +31,7 @@ impl<T: FileExt> Accessor<FileReader<T>> {
/// Decode a `pxar` archive from a standard file implementing `FileExt`.
#[inline]
pub fn from_file_and_size(input: T, size: u64) -> io::Result<Self> {
- Accessor::new(FileReader::new(input), size)
+ Accessor::new(FileReader::new(input), size, None)
}
}
@@ -64,7 +64,7 @@ where
{
/// Open an `Arc` or `Rc` of `File`.
pub fn from_file_ref_and_size(input: T, size: u64) -> io::Result<Accessor<FileRefReader<T>>> {
- Accessor::new(FileRefReader::new(input), size)
+ Accessor::new(FileRefReader::new(input), size, None)
}
}
@@ -74,9 +74,9 @@ impl<T: ReadAt> Accessor<T> {
///
/// Note that the `input`'s `SeqRead` implementation must always return `Poll::Ready` and is
/// not allowed to use the `Waker`, as this will cause a `panic!`.
- pub fn new(input: T, size: u64) -> io::Result<Self> {
+ pub fn new(input: T, size: u64, payload_input: Option<(T, u64)>) -> io::Result<Self> {
Ok(Self {
- inner: poll_result_once(accessor::AccessorImpl::new(input, size))?,
+ inner: poll_result_once(accessor::AccessorImpl::new(input, size, payload_input))?,
})
}
diff --git a/src/decoder/aio.rs b/src/decoder/aio.rs
index 4de8c6f..bb032cf 100644
--- a/src/decoder/aio.rs
+++ b/src/decoder/aio.rs
@@ -20,8 +20,12 @@ pub struct Decoder<T> {
impl<T: tokio::io::AsyncRead> Decoder<TokioReader<T>> {
/// Decode a `pxar` archive from a `tokio::io::AsyncRead` input.
#[inline]
- pub async fn from_tokio(input: T) -> io::Result<Self> {
- Decoder::new(TokioReader::new(input)).await
+ pub async fn from_tokio(input: T, payload_input: Option<T>) -> io::Result<Self> {
+ Decoder::new(
+ TokioReader::new(input),
+ payload_input.map(|payload_input| TokioReader::new(payload_input)),
+ )
+ .await
}
}
@@ -30,15 +34,15 @@ impl Decoder<TokioReader<tokio::fs::File>> {
/// Decode a `pxar` archive from a `tokio::io::AsyncRead` input.
#[inline]
pub async fn open<P: AsRef<Path>>(path: P) -> io::Result<Self> {
- Decoder::from_tokio(tokio::fs::File::open(path.as_ref()).await?).await
+ Decoder::from_tokio(tokio::fs::File::open(path.as_ref()).await?, None).await
}
}
impl<T: SeqRead> Decoder<T> {
/// Create an async decoder from an input implementing our internal read interface.
- pub async fn new(input: T) -> io::Result<Self> {
+ pub async fn new(input: T, payload_input: Option<T>) -> io::Result<Self> {
Ok(Self {
- inner: decoder::DecoderImpl::new(input).await?,
+ inner: decoder::DecoderImpl::new(input, payload_input).await?,
})
}
diff --git a/src/decoder/mod.rs b/src/decoder/mod.rs
index d19ffd1..07b6c61 100644
--- a/src/decoder/mod.rs
+++ b/src/decoder/mod.rs
@@ -157,6 +157,10 @@ pub(crate) struct DecoderImpl<T> {
state: State,
with_goodbye_tables: bool,
+ // Payload of regular files might be provided by a different reader
+ payload_input: Option<T>,
+ payload_consumed: u64,
+
/// The random access code uses decoders for sub-ranges which may not end in a `PAYLOAD` for
/// entries like FIFOs or sockets, so there we explicitly allow an item to terminate with EOF.
eof_after_entry: bool,
@@ -167,6 +171,7 @@ enum State {
Default,
InPayload {
offset: u64,
+ size: u64,
},
/// file entries with no data (fifo, socket)
@@ -195,8 +200,8 @@ pub(crate) enum ItemResult {
}
impl<I: SeqRead> DecoderImpl<I> {
- pub async fn new(input: I) -> io::Result<Self> {
- Self::new_full(input, "/".into(), false).await
+ pub async fn new(input: I, payload_input: Option<I>) -> io::Result<Self> {
+ Self::new_full(input, "/".into(), false, payload_input).await
}
pub(crate) fn input(&self) -> &I {
@@ -207,6 +212,7 @@ impl<I: SeqRead> DecoderImpl<I> {
input: I,
path: PathBuf,
eof_after_entry: bool,
+ payload_input: Option<I>,
) -> io::Result<Self> {
let this = DecoderImpl {
input,
@@ -219,6 +225,8 @@ impl<I: SeqRead> DecoderImpl<I> {
path_lengths: Vec::new(),
state: State::Begin,
with_goodbye_tables: false,
+ payload_input,
+ payload_consumed: 0,
eof_after_entry,
};
@@ -242,9 +250,14 @@ impl<I: SeqRead> DecoderImpl<I> {
// hierarchy and parse the next PXAR_FILENAME or the PXAR_GOODBYE:
self.read_next_item().await?;
}
- State::InPayload { offset } => {
- // We need to skip the current payload first.
- self.skip_entry(offset).await?;
+ State::InPayload { offset, .. } => {
+ if self.payload_input.is_some() {
+ // Update consumed payload as given by the offset referenced by the content reader
+ self.payload_consumed += offset;
+ } else {
+ // Skip remaining payload of current entry in regular stream
+ self.skip_entry(offset).await?;
+ }
self.read_next_item().await?;
}
State::InGoodbyeTable => {
@@ -300,19 +313,23 @@ impl<I: SeqRead> DecoderImpl<I> {
}
pub fn content_size(&self) -> Option<u64> {
- if let State::InPayload { .. } = self.state {
- Some(self.current_header.content_size())
+ if let State::InPayload { size, .. } = self.state {
+ if self.payload_input.is_some() {
+ Some(size)
+ } else {
+ Some(self.current_header.content_size())
+ }
} else {
None
}
}
pub fn content_reader(&mut self) -> Option<Contents<I>> {
- if let State::InPayload { offset } = &mut self.state {
+ if let State::InPayload { offset, size } = &mut self.state {
Some(Contents::new(
- &mut self.input,
+ self.payload_input.as_mut().unwrap_or(&mut self.input),
offset,
- self.current_header.content_size(),
+ *size,
))
} else {
None
@@ -531,8 +548,63 @@ impl<I: SeqRead> DecoderImpl<I> {
self.entry.kind = EntryKind::File {
size: self.current_header.content_size(),
offset,
+ payload_offset: None,
+ };
+ self.state = State::InPayload {
+ offset: 0,
+ size: self.current_header.content_size(),
+ };
+ return Ok(ItemResult::Entry);
+ }
+ format::PXAR_PAYLOAD_REF => {
+ let offset = seq_read_position(&mut self.input).await.transpose()?;
+ let payload_ref = self.read_payload_ref().await?;
+
+ if let Some(payload_input) = self.payload_input.as_mut() {
+ if seq_read_position(payload_input)
+ .await
+ .transpose()?
+ .is_none()
+ {
+ if self.payload_consumed > payload_ref.offset {
+ io_bail!(
+ "unexpected offset {}, smaller than already consumed payload {}",
+ payload_ref.offset,
+ self.payload_consumed,
+ );
+ }
+ let to_skip = payload_ref.offset - self.payload_consumed;
+ Self::skip(payload_input, to_skip as usize).await?;
+ self.payload_consumed += to_skip;
+ }
+
+ let header: Header = seq_read_entry(payload_input).await?;
+ if header.htype != format::PXAR_PAYLOAD {
+ io_bail!(
+ "unexpected header in payload input: expected {} , got {header}",
+ format::PXAR_PAYLOAD,
+ );
+ }
+ self.payload_consumed += size_of::<Header>() as u64;
+
+ if header.content_size() != payload_ref.size {
+ io_bail!(
+ "encountered payload size mismatch: got {}, expected {}",
+ payload_ref.size,
+ header.content_size(),
+ );
+ }
+ }
+
+ self.entry.kind = EntryKind::File {
+ size: payload_ref.size,
+ offset,
+ payload_offset: Some(payload_ref.offset),
+ };
+ self.state = State::InPayload {
+ offset: 0,
+ size: payload_ref.size,
};
- self.state = State::InPayload { offset: 0 };
return Ok(ItemResult::Entry);
}
format::PXAR_FILENAME | format::PXAR_GOODBYE => {
diff --git a/src/decoder/sync.rs b/src/decoder/sync.rs
index 5597a03..caa8bcd 100644
--- a/src/decoder/sync.rs
+++ b/src/decoder/sync.rs
@@ -25,8 +25,11 @@ pub struct Decoder<T> {
impl<T: io::Read> Decoder<StandardReader<T>> {
/// Decode a `pxar` archive from a regular `std::io::Read` input.
#[inline]
- pub fn from_std(input: T) -> io::Result<Self> {
- Decoder::new(StandardReader::new(input))
+ pub fn from_std(input: T, payload_input: Option<T>) -> io::Result<Self> {
+ Decoder::new(
+ StandardReader::new(input),
+ payload_input.map(|payload_input| StandardReader::new(payload_input)),
+ )
}
/// Get a direct reference to the reader contained inside the contained [`StandardReader`].
@@ -38,7 +41,7 @@ impl<T: io::Read> Decoder<StandardReader<T>> {
impl Decoder<StandardReader<std::fs::File>> {
/// Convenience shortcut for `File::open` followed by `Accessor::from_file`.
pub fn open<P: AsRef<Path>>(path: P) -> io::Result<Self> {
- Self::from_std(std::fs::File::open(path.as_ref())?)
+ Self::from_std(std::fs::File::open(path.as_ref())?, None)
}
}
@@ -47,9 +50,11 @@ impl<T: SeqRead> Decoder<T> {
///
/// Note that the `input`'s `SeqRead` implementation must always return `Poll::Ready` and is
/// not allowed to use the `Waker`, as this will cause a `panic!`.
- pub fn new(input: T) -> io::Result<Self> {
+ /// The optional payload input must be used to restore regular file payloads for payload references
+ /// encountered within the archive.
+ pub fn new(input: T, payload_input: Option<T>) -> io::Result<Self> {
Ok(Self {
- inner: poll_result_once(decoder::DecoderImpl::new(input))?,
+ inner: poll_result_once(decoder::DecoderImpl::new(input, payload_input))?,
})
}
diff --git a/src/lib.rs b/src/lib.rs
index 210c4b1..ef81a85 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -364,6 +364,9 @@ pub enum EntryKind {
/// The file's byte offset inside the archive, if available.
offset: Option<u64>,
+
+ /// The file's byte offset inside the payload stream, if available.
+ payload_offset: Option<u64>,
},
/// Directory entry. When iterating through an archive, the contents follow next.
diff --git a/tests/compat.rs b/tests/compat.rs
index 3b43e38..a1514ba 100644
--- a/tests/compat.rs
+++ b/tests/compat.rs
@@ -94,7 +94,8 @@ fn create_archive() -> io::Result<Vec<u8>> {
fn test_archive() {
let archive = create_archive().expect("failed to create test archive");
let mut input = &archive[..];
- let mut decoder = decoder::Decoder::from_std(&mut input).expect("failed to create decoder");
+ let mut decoder =
+ decoder::Decoder::from_std(&mut input, None).expect("failed to create decoder");
let item = decoder
.next()
diff --git a/tests/simple/main.rs b/tests/simple/main.rs
index e55457f..6ee93d1 100644
--- a/tests/simple/main.rs
+++ b/tests/simple/main.rs
@@ -61,13 +61,14 @@ fn test1() {
// std::fs::write("myarchive.pxar", &file).expect("failed to write out test archive");
let mut input = &file[..];
- let mut decoder = decoder::Decoder::from_std(&mut input).expect("failed to create decoder");
+ let mut decoder =
+ decoder::Decoder::from_std(&mut input, None).expect("failed to create decoder");
let decoded_fs =
fs::Entry::decode_from(&mut decoder).expect("failed to decode previously encoded archive");
assert_eq!(test_fs, decoded_fs);
- let accessor = accessor::Accessor::new(&file[..], file.len() as u64)
+ let accessor = accessor::Accessor::new(&file[..], file.len() as u64, None)
.expect("failed to create random access reader for encoded archive");
check_bunzip2(&accessor);
--
2.39.2
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