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2024-11-04app: format mapped uid instead of real uidOphestra Umiker
Signed-off-by: Ophestra Umiker <cat@ophivana.moe>
2024-11-03system/dbus: buffer xdg-dbus-proxy messagesOphestra Umiker
Pointing xdg-dbus-proxy to stdout/stderr makes a huge mess. This change enables app to neatly print out prefixed xdg-dbus-proxy messages after output is resumed. Signed-off-by: Ophestra Umiker <cat@ophivana.moe>
2024-11-03cmd/fshim/ipc: friendly setup timeout messageOphestra Umiker
This message eventually gets returned by the app's Start method, so they should be wrapped to provide a friendly message. Signed-off-by: Ophestra Umiker <cat@ophivana.moe>
2024-11-02fortify: replace direct syscall with prctl wrapperOphestra Umiker
Signed-off-by: Ophestra Umiker <cat@ophivana.moe>
2024-11-02cmd: shim and init into separate binariesOphestra Umiker
This change also fixes a deadlock when shim fails to connect and complete the setup. Signed-off-by: Ophestra Umiker <cat@ophivana.moe>
2024-10-28add package doc commentsOphestra Umiker
Signed-off-by: Ophestra Umiker <cat@ophivana.moe>
2024-10-28release: 0.0.10Ophestra Umiker
Signed-off-by: Ophestra Umiker <cat@ophivana.moe>
2024-10-28fsu: check parent executable pathOphestra Umiker
Only allow main program to launch fsu. This change and further checks in the main program reduces attack surface. Signed-off-by: Ophestra Umiker <cat@ophivana.moe>
2024-10-28app/start: skip cleanup if shim is nilOphestra Umiker
Shim is created before any system operation happens. Signed-off-by: Ophestra Umiker <cat@ophivana.moe>
2024-10-28shim: expose checkPid in constructorOphestra Umiker
This will be supported soon when launching via fsu. Signed-off-by: Ophestra Umiker <cat@ophivana.moe>
2024-10-28fsu: implement simple setuid user switcherOphestra Umiker
Contains path to fortify, set at compile time, authenticates based on a simple uid range assignment file which also acts as the allow list. Signed-off-by: Ophestra Umiker <cat@ophivana.moe>
2024-10-27fortify: exit if seal returns errorOphestra Umiker
Wait should not be called on an unsealed App. Signed-off-by: Ophestra Umiker <cat@ophivana.moe>
2024-10-27system/dbus: compare sealed value by stringOphestra Umiker
Stringer method of dbus.Proxy returns a string representation of its args stream when sealed. Signed-off-by: Ophestra Umiker <cat@ophivana.moe>
2024-10-27system: move sd_booted implementation to os abstractionOphestra Umiker
This implements lazy loading of the systemd marker (they are not accessed in init and shim) and ensures consistent behaviour when running with a stub. Signed-off-by: Ophestra Umiker <cat@ophivana.moe>
2024-10-27release: 0.0.9Ophestra Umiker
Signed-off-by: Ophestra Umiker <cat@ophivana.moe>
2024-10-27fmsg: initialise dequeue prior to withhold/resumeOphestra Umiker
This fixes the hang on resume when no messages were ever printed. Signed-off-by: Ophestra Umiker <cat@ophivana.moe>
2024-10-27release: 0.0.8Ophestra Umiker
Signed-off-by: Ophestra Umiker <cat@ophivana.moe>
2024-10-27shim: user switcher process management structOphestra Umiker
This change moves all user switcher and shim management to the shim package and withholds output while shim is alive. This also eliminated all exit scenarios where revert is skipped. Signed-off-by: Ophestra Umiker <cat@ophivana.moe>
2024-10-26fmsg: support temporarily withholding outputOphestra Umiker
Trying to print to a shared stdout is a terrible idea. This change makes it possible to withhold output for the lifetime of the sandbox. Signed-off-by: Ophestra Umiker <cat@ophivana.moe>
2024-10-25app: separate nixos test cases from testsOphestra Umiker
Test cases are very long, separating them improves editor performance. Signed-off-by: Ophestra Umiker <cat@ophivana.moe>
2024-10-25app: test app permissive defaults sealing behaviourOphestra Umiker
This test seals App against a deterministic os stub and checks the resulting sys and bwrap values against known correct ones. The effects of sys and bwrap on the OS and sandbox is deterministic and tested in their own respective packages. Signed-off-by: Ophestra Umiker <cat@ophivana.moe>
2024-10-25system: print number of ops completed at point of failureOphestra Umiker
Signed-off-by: Ophestra Umiker <cat@ophivana.moe>
2024-10-25system: include more info in ACL StringerOphestra Umiker
Signed-off-by: Ophestra Umiker <cat@ophivana.moe>
2024-10-25app/start: cleaner command not found messageOphestra Umiker
Signed-off-by: Ophestra Umiker <cat@ophivana.moe>
2024-10-25internal: ReadDir wrapper return fs.DirEntryOphestra Umiker
Signed-off-by: Ophestra Umiker <cat@ophivana.moe>
2024-10-25app/seal: symlink /etc entries in permissive defaultOphestra Umiker
Fortify overrides /etc/passwd and /etc/group in the sandbox. Bind mounting /etc results in them being replaced when the passwd database is updated on host. Signed-off-by: Ophestra Umiker <cat@ophivana.moe>
2024-10-25app/config: support creating symlinks within sandboxOphestra Umiker
This is already supported by the underlying bwrap helper. This change exposes access to it in Config. Signed-off-by: Ophestra Umiker <cat@ophivana.moe>
2024-10-25helper/bwrap: register generic PermConfig types with gobOphestra Umiker
Signed-off-by: Ophestra Umiker <cat@ophivana.moe>
2024-10-25shim: kill shim if setup becomes impossibleOphestra Umiker
This prevents a hang when setup faults but the shim keeps waiting on the socket. Setup is automatically aborted when the shim is killed. Signed-off-by: Ophestra Umiker <cat@ophivana.moe>
2024-10-25internal: use fallback paths when XDG_RUNTIME_DIR is not absoluteOphestra Umiker
There are scenarios where XDG_RUNTIME_DIR is set to an empty string or garbage. This check tries to ensure reasonable behaviour in most of those cases. Signed-off-by: Ophestra Umiker <cat@ophivana.moe>
2024-10-23internal: wrap calls to os standard library functionsOphestra Umiker
This change helps tests stub out and simulate OS behaviour during the sealing process. This also removes dependency on XDG_RUNTIME_DIR as the internal.System implementation provided to App provides a compat directory inside the tmpdir-based share when XDG_RUNTIME_DIR is unavailable. Signed-off-by: Ophestra Umiker <cat@ophivana.moe>
2024-10-23system: sys comparison methodOphestra Umiker
Signed-off-by: Ophestra Umiker <cat@ophivana.moe>
2024-10-23system: return sys in queueing methodsOphestra Umiker
This enables building an instance in a single statement. Signed-off-by: Ophestra Umiker <cat@ophivana.moe>
2024-10-21shim: abort setup on failed start and process exitOphestra Umiker
Shim setup listens on a socket in the process share, if shim setup hasn't happened on exit revert will fail. This change makes sure shim setup is aborted on a doomed launch. Signed-off-by: Ophestra Umiker <cat@ophivana.moe>
2024-10-21fmsg: produce all output through fmsgOphestra Umiker
The behaviour of print functions from package fmt is not thread safe. Functions provided by fmsg wrap around Logger methods. This makes prefix much cleaner and makes it easy to deal with future changes to logging. Signed-off-by: Ophestra Umiker <cat@ophivana.moe>
2024-10-21app: move wayland mediation to shim packageOphestra Umiker
Values used in the Wayland mediation implementation is stored in various struct fields strewn across multiple app structs and checks are messy and confusing. This commit unifies them into a single struct and access it using much better looking methods. Signed-off-by: Ophestra Umiker <cat@ophivana.moe>
2024-10-20release: 0.0.7Ophestra Umiker
Signed-off-by: Ophestra Umiker <cat@ophivana.moe>
2024-10-20migrate to git.ophivana.moe/security/fortifyOphestra Umiker
Signed-off-by: Ophestra Umiker <cat@ophivana.moe>
2024-10-20update README documentOphestra Umiker
We have a highly configurable sandbox now, just not really the Android sandbox. Signed-off-by: Ophestra Umiker <cat@ophivana.moe>
2024-10-20app: move app ID to app structOphestra Umiker
App ID is inherent to App, and it makes no sense to generate it as part of the app sealing process. Signed-off-by: Ophestra Umiker <cat@ophivana.moe>
2024-10-18workflows: call apt-get without sudoOphestra Umiker
Workflow scripts run as root in act-runner containers, so calling sudo is redundant and pointless. Signed-off-by: Ophestra Umiker <cat@ophivana.moe>
2024-10-18state: store launch method instead of launcher pathOphestra Umiker
Launcher path is constant for each launch method on the same system. Signed-off-by: Ophestra Umiker <cat@ophivana.moe>
2024-10-18release: 0.0.6Ophestra Umiker
Signed-off-by: Ophestra Umiker <cat@ophivana.moe>
2024-10-18app/share: fix order to ensure SharePath before any of its subdirectoriesOphestra Umiker
shareTmpdirChild happened to request an ephemeral dir within SharePath and was called before shareRuntime which ensures that path. This commit moves SharePath initialisation to shareSystem and moves shareTmpdirChild into ShareSystem. Further cleanup and tests are desperately needed for the app package but for now this fix will have to do. Signed-off-by: Ophestra Umiker <cat@ophivana.moe>
2024-10-17release: 0.0.5Ophestra Umiker
Signed-off-by: Ophestra Umiker <cat@ophivana.moe>
2024-10-17init: start timeout only if reaped PID is the initial processOphestra Umiker
Fix a very obvious bug introduced in 5401882ed0. Signed-off-by: Ophestra Umiker <cat@ophivana.moe>
2024-10-17nix: remove fortify package from default devShellOphestra Umiker
This change makes it possible to start a devShell when tests aren't passing. Signed-off-by: Ophestra Umiker <cat@ophivana.moe>
2024-10-17system: tests for all Op implementations except DBusOphestra Umiker
Signed-off-by: Ophestra Umiker <cat@ophivana.moe>
2024-10-17system/mkdir: type label in String methodOphestra Umiker
Signed-off-by: Ophestra Umiker <cat@ophivana.moe>
2024-10-17ldd: run ldd with read-only filesystem and unshared netOphestra Umiker
This is only called on trusted programs, however extra hardening is never a bad idea. Signed-off-by: Ophestra Umiker <cat@ophivana.moe>