client security context manager
Interface
Version 1
This interface allows a client to register a new Wayland connection to
the compositor and attach a security context to it.
This is intended to be used by sandboxes. Sandbox engines attach a
security context to all connections coming from inside the sandbox. The
compositor can then restrict the features that the sandboxed connections
can use.
Compositors should forbid nesting multiple security contexts by not
exposing wp_security_context_manager_v1 global to clients with a security
context attached, or by sending the nested protocol error. Nested
security contexts are dangerous because they can potentially allow
privilege escalation of a sandboxed client.
Warning! The protocol described in this file is currently in the testing
phase. Backward compatible changes may be added together with the
corresponding interface version bump. Backward incompatible changes can
only be done by creating a new major version of the extension.
destroy the manager object
Destructor
Request
Since Version 1
Destroy the manager. This doesn't destroy objects created with the
manager.
create a new security context
Request
Since Version 1
Creates a new security context with a socket listening FD.
The compositor will accept new client connections on listen_fd.
listen_fd must be ready to accept new connections when this request is
sent by the client. In other words, the client must call bind(2) and
listen(2) before sending the FD.
close_fd is a FD that will signal hangup when the compositor should stop
accepting new connections on listen_fd.
The compositor must continue to accept connections on listen_fd when
the Wayland client which created the security context disconnects.
After sending this request, closing listen_fd and close_fd remains the
only valid operation on them.
| Argument | Type | Description |
|---|
| id | new_id<wp_security_context_v1> | |
| listen_fd | fd | listening socket FD |
| close_fd | fd | FD signaling when done |
| Entry | Value | Since | Description |
|---|
| invalid_listen_fd | 1 | 1 | listening socket FD is invalid |
| nested | 2 | 1 | nested security contexts are forbidden |
The security context allows a client to register a new client and attach
security context metadata to the connections.
When both are set, the combination of the application ID and the sandbox
engine must uniquely identify an application. The same application ID
will be used across instances (e.g. if the application is restarted, or
if the application is started multiple times).
When both are set, the combination of the instance ID and the sandbox
engine must uniquely identify a running instance of an application.
destroy the security context object
Destructor
Request
Since Version 1
Destroy the security context object.
| Argument | Type | Description |
|---|
| name | string | the sandbox engine name |
Attach an application ID to the security context.
The application ID is an opaque, sandbox-specific identifier for an
application. See the well-known engines document for more details:
https://gitlab.freedesktop.org/wayland/wayland-protocols/-/blob/main/staging/security-context/engines.md
The compositor may use the application ID to group clients belonging to
the same security context application.
Whether this request is optional or not depends on the sandbox engine used.
It is a protocol error to call this request twice. The already_set
error is sent in this case.
| Argument | Type | Description |
|---|
| app_id | string | the application ID |
| Argument | Type | Description |
|---|
| instance_id | string | the instance ID |
register the security context
Request
Since Version 1
| Entry | Value | Since | Description |
|---|
| already_used | 1 | 1 | security context has already been committed |
| already_set | 2 | 1 | metadata has already been set |
| invalid_metadata | 3 | 1 | metadata is invalid |
Copyright
Copyright © 2021 Simon Ser
Permission is hereby granted, free of charge, to any person obtaining a
copy of this software and associated documentation files (the "Software"),
to deal in the Software without restriction, including without limitation
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and/or sell copies of the Software, and to permit persons to whom the
Software is furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice (including the next
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Software.
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