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Change how directories and symlinks in directories are handled when reading drop data

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Needs implementation.
This commit is contained in:
Kovid Goyal
2026-04-09 16:47:03 +05:30
parent 79706520c5
commit a92b381dc3
1 changed files with 15 additions and 10 deletions
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25
docs/dnd-protocol.rst
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@@ -151,8 +151,8 @@ MIME type is not present in the drop, the terminal must reply with
If the client requests an entry that is not a supported URI type the
terminal must reply with ``t=R:r=request_id ; EUNKNOWN``.
Terminals must ONLY send data for regular files. Symbolic links must be
resolved and the corresponding file read. If the terminal does not have
Terminals must ONLY send data for regular files or directories. Symbolic links must be
resolved and the corresponding file or directory read. If the terminal does not have
permission to read the file it must reply with ``t=R:r=request_id ; EPERM``. Terminals
must respond with ``t=R:r=request_id ; EINVAL`` if the file is not a regular file after
resolving symlinks and ``t=R:r=request_id ; ENOENT`` if the file does not exist. If an
@@ -175,17 +175,12 @@ Reading remote directories
If the file is actually a directory the terminal must respond with ``t=d:x=idx:r=request_id ; payload``.
Here payload is a null byte separated list of entries in the directory that are
either regular files, directories or symlinks. The payload must be base64
encoded and might be chunked if the directory has a lot of entries. The first
entry in the list must be a unique identifier for the directory, to prevent
symlink loops. Terminals may use whatever identifier is most suitable for their platforms, clients should
not re-request the contents of a directory whose identifier they have seen
before. On POSIX platforms the identifier would typically be device and inode
number.
encoded and might be chunked if the directory has a lot of entries.
``idx`` is an arbitrary 32 bit integer that acts as a handle to this
directory. The client can now read the files in this directory using requests of the form
``t=d:x=idx:y=num:r=request_id``, here ``num`` is the index into the list of
directory entries previously transmitted to the client. Here, ``1`` will
``t=d:x=idx:y=num:r=request_id``, here ``num`` is the 0-based index into the list of
directory entries previously transmitted to the client, where, ``0`` will
correspond to the first entry in the directory. Once the client is done
reading a directory it should transmit ``t=d:x=idx:r=request_id`` to the terminal. The
terminal can then free any resources associated with that directory. The
@@ -196,6 +191,15 @@ the terminal. Terminals may deny directory traversal requests if too many
resources are used, in order to prevent denial or service attacks. In such
cases the terminal must respond with ``ENOMEM``.
When transmitting a symlink that is inside a directory,
the terminal responds with escape code of the form::
OSC _dnd_code ; t=r:r=request_id:X=1 ; base64 encoded symlink target ST
Here, the presence of ``X=1`` indicates that the file is a symlink, not a
regular file.
Starting drags
-----------------
@@ -355,6 +359,7 @@ Key Value Default Description
``p`` - present data for drag offers
``P`` - Change drag image or start drag
``e`` - a drag offer event occurred
``E`` - a drag offer data error occurred
``m`` Chunking indicator ``0`` ``0`` or ``1``