i3-compatible Wayland compositor
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Jerzi Kaminsky 2ad8850398 Handle symlinks as IPC security targets
- When policies are allocated, the ipc target path goes
  through symlink resolution. The result is used as
  the canonical for matching pids to policies at runtime.
  In particular, this matches up with the target of
  the `/proc/<pid>/exe`.
- There's a possible race condition if this isn't done
  correctly, read below.

Originally, validate_ipc_target() always tried to resolve
its argument for symlinks, and returned a parogram target string
if it validates. This created a possible race condition with
security implications. The problem is that get_feature_policy()
first independently resolved the policy target in order to check
whether a policy already exists. If it didn't find any, it called
alloc_feature_policy() which called validate_ipc_target() which
resolved the policy target again. In the time between the two
checks, the symlink could be altered, and a lucky attacker could
fool the program into thinking that a policy doesn't exist
for a target, and then switch the symlink to point at another file.
At the very least this could allow him to create two policies
for the same program target, and possibly to bypass security
by associating the permissions for one target with another,
or force default permissions to apply to a target for which
a more specific rule has been configured. So we don't that.

Instead, the policy target is resolved once and that result is
used for the rest of the lookup/creation process.
2017-04-16 17:09:53 +03:00
CMake Add libcap check to CMake 2017-04-07 03:14:16 +03:00
assets Recompressed PNG files 2017-01-05 21:49:28 -05:00
common Add resolve_path() to utils 2017-04-16 17:09:53 +03:00
completions/zsh Use CMAKE_INSTALL_FULL_DATA{,ROOT}DIR 2016-12-17 01:00:39 +01:00
contrib Move awesome config to contrib/ 2017-01-14 16:03:41 -05:00
include Add resolve_path() to utils 2017-04-16 17:09:53 +03:00
protocols Add redshift support 2016-12-28 02:04:51 -05:00
security.d Fix #1087 2017-02-26 05:49:42 -05:00
sway Handle symlinks as IPC security targets 2017-04-16 17:09:53 +03:00
swaybar UnGNUify the codebase 2017-03-10 23:41:24 -05:00
swaybg Add client support for HiDPI 2016-09-05 11:36:48 -04:00
swaygrab UnGNUify the codebase 2017-03-10 23:41:24 -05:00
swaylock UnGNUify the codebase 2017-03-10 23:41:24 -05:00
swaymsg Add pretty printing to swaymsg 2017-04-03 07:27:25 -04:00
wayland add missing ! for wl seat caps 2017-03-18 11:29:02 -04:00
.clang-format Update .clang-format - not entirely usable yet 2017-01-10 23:30:34 -05:00
.editorconfig Create .editorconfig 2016-07-04 14:12:32 +02:00
.gitignore remove archive from git, add *.a to gitignore 2015-12-03 15:52:21 +02:00
.travis.yml Add libcap check to CMake 2017-04-07 03:14:16 +03:00
CMakeLists.txt Add libcap check to CMake 2017-04-07 03:14:16 +03:00
CONTRIBUTING.md Fix broken link in CONTRIBUTING.md 2017-01-05 15:56:40 -07:00
LICENSE MIT license 2017-01-06 13:45:48 -05:00
README.md Remain compat with libinput < 1.7.0 2017-04-14 02:30:41 +03:00
config.in Use CMAKE_INSTALL_FULL_DATA{,ROOT}DIR 2016-12-17 01:00:39 +01:00
sway.desktop Add Wayland and Xorg session files 2015-08-20 23:12:34 +02:00

README.md

sway Donate with fosspay

"SirCmpwn's Wayland compositor" is a work in progress i3-compatible Wayland compositor. Read the FAQ. Join the IRC channel (#sway on irc.freenode.net).

More screenshots

Release Signatures

Releases are signed with B22DA89A and published on GitHub.

Status

Bounties: sponsor features or get paid to write them

Installation

From Packages

Sway is available in many distributions. Try installing the "sway" package for yours. If it's not available, check out this wiki page for information on installation for your distributions.

If you're interested in packaging Sway for your distribution, stop by the IRC channel or shoot an email to sir@cmpwn.com for advice.

Compiling from Source

Install dependencies:

  • cmake
  • wlc
  • wayland
  • xwayland
  • libinput >= 1.6.0
  • libcap
  • asciidoc
  • pcre
  • json-c
  • pango
  • cairo
  • gdk-pixbuf2 *
  • pam **
  • imagemagick (required for image capture with swaygrab)
  • ffmpeg (required for video capture with swaygrab)

*Only required for swaybar, swaybg, and swaylock

**Only required for swaylock

Run these commands:

mkdir build
cd build
cmake -DCMAKE_BUILD_TYPE=Release -DCMAKE_INSTALL_SYSCONFDIR=/etc ..
make
sudo make install

On systems with logind, you need to set a few caps on the binary:

sudo setcap cap_sys_ptrace=eip /usr/local/bin/sway
sudo setcap cap_sys_tty_config=eip /usr/local/bin/sway

On systems without logind, you need to suid the sway binary:

sudo chmod a+s /usr/local/bin/sway

Configuration

If you already use i3, then copy your i3 config to ~/.config/sway/config and it'll work out of the box. Otherwise, copy the sample configuration file to ~/.config/sway/config. It is usually located at /etc/sway/config. Run man 5 sway for information on the configuration.

My own dotfiles are available here if you want some inspiration, and definitely check out the wiki as well.

Running

Instead of running startx, run sway. You can run sway from within X as well, which is useful for testing.