Drop sudo requirement and stop forking swayipc

Cargo.lock

@@ -2,6 +2,21 @@
 # It is not intended for manual editing.
 version = 3
 
+[[package]]
+name = "addr2line"
+version = "0.17.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b9ecd88a8c8378ca913a680cd98f0f13ac67383d35993f86c90a70e3f137816b"
+dependencies = [
+ "gimli",
+]
+
+[[package]]
+name = "adler"
+version = "1.0.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f26201604c87b1e01bd3d98f8d5d9a8fcbb815e8cedb41ffccbeb4bf593a35fe"
+
 [[package]]
 name = "aho-corasick"
 version = "0.7.18"
@@ -47,6 +62,21 @@ version = "1.0.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "cdb031dd78e28731d87d56cc8ffef4a8f36ca26c38fe2de700543e627f8a464a"
 
+[[package]]
+name = "backtrace"
+version = "0.3.63"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "321629d8ba6513061f26707241fa9bc89524ff1cd7a915a97ef0c62c666ce1b6"
+dependencies = [
+ "addr2line",
+ "cc",
+ "cfg-if",
+ "libc",
+ "miniz_oxide",
+ "object",
+ "rustc-demangle",
+]
+
 [[package]]
 name = "bitflags"
 version = "1.2.1"
@@ -154,6 +184,28 @@ dependencies = [
  "nix 0.23.1",
 ]
 
+[[package]]
+name = "failure"
+version = "0.1.8"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d32e9bd16cc02eae7db7ef620b392808b89f6a5e16bb3497d159c6b92a0f4f86"
+dependencies = [
+ "backtrace",
+ "failure_derive",
+]
+
+[[package]]
+name = "failure_derive"
+version = "0.1.8"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "aa4da3c766cd7a0db8242e326e9e4e081edd567072893ed320008189715366a4"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn",
+ "synstructure",
+]
+
 [[package]]
 name = "fastrand"
 version = "1.6.0"
@@ -282,6 +334,12 @@ dependencies = [
  "unicode-width",
 ]
 
+[[package]]
+name = "gimli"
+version = "0.26.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "78cc372d058dcf6d5ecd98510e7fbc9e5aec4d21de70f65fea8fecebcd881bd4"
+
 [[package]]
 name = "hashbrown"
 version = "0.11.2"
@@ -370,6 +428,16 @@ dependencies = [
  "autocfg",
 ]
 
+[[package]]
+name = "miniz_oxide"
+version = "0.4.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a92518e98c078586bc6c934028adcca4c92a53d6a958196de835170a01d84e4b"
+dependencies = [
+ "adler",
+ "autocfg",
+]
+
 [[package]]
 name = "nb-connect"
 version = "1.2.0"
@@ -406,6 +474,15 @@ dependencies = [
  "memoffset",
 ]
 
+[[package]]
+name = "object"
+version = "0.27.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "67ac1d3f9a1d3616fd9a60c8d74296f22406a238b6a72f5cc1e6f314df4ffbf9"
+dependencies = [
+ "memchr",
+]
+
 [[package]]
 name = "once_cell"
 version = "1.9.0"
@@ -509,6 +586,12 @@ version = "0.6.25"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "f497285884f3fcff424ffc933e56d7cbca511def0c9831a7f9b5f6153e3cc89b"
 
+[[package]]
+name = "rustc-demangle"
+version = "0.1.21"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7ef03e0a2b150c7a90d01faf6254c9c48a41e95fb2a8c2ac1c6f0d2b9aefc342"
+
 [[package]]
 name = "ryu"
 version = "1.0.9"
@@ -599,22 +682,13 @@ checksum = "a2eb9349b6444b326872e140eb1cf5e7c522154d69e7a0ffb0fb81c06b37543f"
 
 [[package]]
 name = "swayipc"
-version = "3.0.0-alpha.3"
+version = "2.7.2"
-source = "git+https://github.com/k0kubun/swayipc-rs#580b5b6e02b911547c4741bfe240ea8d81d1147c"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "92c6565a48b46668f894564e855ea0adfef31f51f549af6fedd9cba8052b210f"
 dependencies = [
+ "failure",
  "serde",
  "serde_json",
- "swayipc-types",
-]
-
-[[package]]
-name = "swayipc-types"
-version = "1.0.0-alpha.3"
-source = "git+https://github.com/k0kubun/swayipc-rs#580b5b6e02b911547c4741bfe240ea8d81d1147c"
-dependencies = [
- "serde",
- "serde_json",
- "thiserror",
 ]
 
 [[package]]
@@ -628,6 +702,18 @@ dependencies = [
  "unicode-xid",
 ]
 
+[[package]]
+name = "synstructure"
+version = "0.12.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f36bdaa60a83aca3921b5259d5400cbf5e90fc51931376a9bd4a0eb79aa7210f"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn",
+ "unicode-xid",
+]
+
 [[package]]
 name = "tap"
 version = "1.0.1"

Cargo.toml

@@ -17,7 +17,7 @@ nix = "0.23.1"
 serde = { version = "1.0", features = ["derive"] }
 serde_json = "1.0"
 serde_yaml = "0.8"
-swayipc = { git = "https://github.com/k0kubun/swayipc-rs" }
+swayipc = "2.7.2"
 x11_rs = { package = "x11", version = "2.19.1", features = ["xlib"] }
 zbus = "1.9.2"
 

README.md

@@ -11,9 +11,21 @@
 * **Language-agnostic** - The config is JSON-compatible. Generate it from any language,
   e.g. [Ruby](https://github.com/xremap/xremap-ruby), [Python](https://github.com/xremap/xremap-python).
 
+## Prerequisite
+
+`xremap` assumes that your user can use `evdev` and `uinput` without sudo.
+This can be configured by the following commands:
+
+```bash
+sudo gpasswd -a YOUR_USER input
+echo 'KERNEL=="uinput", GROUP="input"' | sudo tee /etc/udev/rules.d/input.rules
+```
+
+Then reboot your machine to make sure udev rules are applied.
+
 ## Installation
 
-Download a binary from [Releases](https://github.com/k0kubun/xremap/releases).
+After the reboot, download a binary from [Releases](https://github.com/k0kubun/xremap/releases).
 
 If it doesn't work, please [install Rust](https://doc.rust-lang.org/cargo/getting-started/installation.html)
 and run one of the following commands in this repository and use `target/release/xremap`:
@@ -32,6 +44,8 @@ cargo build xremap --release --features sway
 cargo build xremap --release
 ```
 
+You may also need to install `libx11-dev` to run the `xremap` binary for X11.
+
 ## Usage
 
 Write [a config file](#Configuration) directly, or generate it with
@@ -39,7 +53,7 @@ Write [a config file](#Configuration) directly, or generate it with
 Then run:
 
 ```
-sudo xremap config.yml
+xremap config.yml
 ```
 
 ### Dynamic binding
@@ -49,27 +63,7 @@ Xremap supports application-specific key remapping.
 While Xremap uses `evdev` and `uinput`, which is a lower layer than X11 and Wayland,
 Xremap also uses X11 or Wayland compositor-specific protocols to support `application` config.
 If you need this feature, make sure you specify the correct binary or `--features` option,
-and follow the following instructions.
+and pay attention to the error messages from `xremap`.
-
-#### X11
-
-You may need to run `xhost +SI:localuser:root` before starting `xremap`.
-It prints `No protocol specified` for such cases.
-
-You may also need to install `libx11-dev` to run the `xremap` binary for X11.
-
-#### GNOME Wayland
-
-Before using `xremap`, update `/usr/share/dbus-1/session.conf` as follows and reboot your machine
-to allow `sudo xremap` to talk to your user's D-Bus.
-
-```diff
-   <policy context="default">
-+    <allow user="root"/>
-     <!-- Allow everything to be sent -->
-     <allow send_destination="*" eavesdrop="true"/>
-     <!-- Allow everything to be received -->
-```
 
 ## Configuration
 Your `config.yml` should look like this:

src/client/gnome_client.rs

@@ -11,9 +11,7 @@ impl GnomeClient {
     }
 
     fn connect(&mut self) {
-        let uid = 1000; // Assume a first nornal Linux user. TODO: Make it configurable
+        match Connection::new_session() {
-        let address = format!("unix:path=/run/user/{}/bus", uid);
-        match Connection::new_for_address(&address, true) {
             Ok(connection) => self.connection = Some(connection),
             Err(e) => println!("GnomeClient#connect() failed: {}", e),
         }

src/client/sway_client.rs

@@ -1,7 +1,7 @@
-use crate::client::Client;
+use std::env;
 use std::fs::read_dir;
 use std::os::unix::ffi::OsStrExt;
-use std::os::unix::net::UnixStream;
+use crate::client::Client;
 use swayipc::Connection;
 
 pub struct SwayClient {
@@ -15,10 +15,21 @@ impl SwayClient {
 
     fn connect(&mut self) {
         if let None = self.connection {
-            if let Some(socket) = find_socket() {
+            if let Err(env::VarError::NotPresent) = env::var("SWAYSOCK") {
-                if let Ok(unix_stream) = UnixStream::connect(socket) {
+                let path = match find_socket() {
-                    self.connection = Some(Connection(unix_stream));
+                    Some(path) => path,
-                }
+                    None => {
+                        println!("Failed to locate a SWAYSOCK from /run/user/1000/sway-ipc.*");
+                        return;
+                    },
+                };
+                println!("$SWAYSOCK is not set. Defaulting to \"{}\"", path);
+                env::set_var("SWAYSOCK", path);
+            }
+
+            match Connection::new() {
+                Ok(connection) => self.connection = Some(connection),
+                Err(e) => println!("SwayClient#connect() failed: {}", e),
             }
         }
     }