add build for linux

.github/workflows/build.yml

@@ -0,0 +1,63 @@
+---
+name: "Linux build"
+
+on:
+  push:
+    branches:
+      - master
+jobs:
+  build_linux:
+    name: Build Linux
+    runs-on: ubuntu-20.04
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v2
+      - run: docker build -t builder .
+      - name: Build binary
+        run: |
+          docker run \
+            -v $PWD:/mosh \
+            -w /mosh \
+            --name=builder \
+            builder \
+            sh -c './autogen.sh && LDFLAGS=-static ./configure && make'
+      - uses: actions/upload-artifact@v2
+        with:
+          name: mosh-linux
+          path: |
+            src/frontend/mosh-server
+            src/frontend/mosh-client
+          if-no-files-found: error
+  release:
+    name: Release
+    runs-on: ubuntu-20.04
+    needs: [build_linux]
+    steps:
+      - uses: actions/download-artifact@v2
+        with:
+          name: mosh-linux
+      - run: |
+          (
+            echo '- [Build #${{ github.run_number }}](https://github.com/${{ github.repository }}/actions/runs/${{ github.run_id }})'
+            echo
+            echo '## Files'
+            echo '```'
+            ( file mosh-server mosh-client )
+            echo '```'
+            echo
+            echo '## SHA256 Checksums'
+            echo '```'
+            ( sha256sum mosh-server mosh-client )
+            echo '```'
+          ) | tee release.md
+      - name: Release
+        uses: softprops/action-gh-release@v1
+        with:
+          name: "Build #${{ github.run_number }}"
+          body_path: release.md
+          prerelease: false
+          draft: false
+          tag_name: run-${{ github.run_number }}
+          files: |
+            mosh-server-linux
+            mosh-client-linux

Dockerfile

@@ -0,0 +1,18 @@
+# Based on from https://github.com/javabrett/mosh/blob/docker/dockerfiles/Dockerfile.alpine
+FROM alpine:3.13
+RUN apk update && \
+  apk --no-cache add \
+  autoconf \
+  automake \
+  build-base \
+  ncurses-dev \
+  ncurses-static \
+  openssh-client \
+  openssh-server \
+  openssl-dev \
+  openssl-libs-static \
+  perl-doc \
+  protobuf-dev \
+  zlib-static \
+  zlib-dev \
+  libutempter-dev

README.md

@@ -1,164 +1,8 @@
-[![Build Status](https://travis-ci.org/mobile-shell/mosh.svg?branch=master)](https://travis-ci.org/mobile-shell/mosh)
+=======
+# mosh-static
 
-Mosh: the mobile shell
-======================
+An unofficial static binary distribution of [mobile-shell/mosh](https://github.com/mobile-shell/mosh) which can be dropped into a remote server.
 
-Mosh is a remote terminal application that supports intermittent
-connectivity, allows roaming, and provides speculative local echo
-and line editing of user keystrokes.
-
-It aims to support the typical interactive uses of SSH, plus:
-
-   * Mosh keeps the session alive if the client goes to sleep and
-     wakes up later, or temporarily loses its Internet connection.
-
-   * Mosh allows the client and server to "roam" and change IP
-     addresses, while keeping the connection alive. Unlike SSH, Mosh
-     can be used while switching between Wi-Fi networks or from Wi-Fi
-     to cellular data to wired Ethernet.
-
-   * The Mosh client runs a predictive model of the server's behavior
-     in the background and tries to guess intelligently how each
-     keystroke will affect the screen state. When it is confident in
-     its predictions, it will show them to the user while waiting for
-     confirmation from the server. Most typing and uses of the left-
-     and right-arrow keys can be echoed immediately.
-
-     As a result, Mosh is usable on high-latency links, e.g. on a
-     cellular data connection or spotty Wi-Fi. In distinction from
-     previous attempts at local echo modes in other protocols, Mosh
-     works properly with full-screen applications such as emacs, vi,
-     alpine, and irssi, and automatically recovers from occasional
-     prediction errors within an RTT. On high-latency links, Mosh
-     underlines its predictions while they are outstanding and removes
-     the underline when they are confirmed by the server.
-
-Mosh does not support X forwarding or the non-interactive uses of SSH,
-including port forwarding.
-
-Other features
---------------
-
-   * Mosh adjusts its frame rate so as not to fill up network queues
-     on slow links, so "Control-C" always works within an RTT to halt
-     a runaway process.
-
-   * Mosh warns the user when it has not heard from the server
-     in a while.
-
-   * Mosh supports lossy links that lose a significant fraction
-     of their packets.
-
-   * Mosh handles some Unicode edge cases better than SSH and existing
-     terminal emulators by themselves, but requires a UTF-8
-     environment to run.
-
-   * Mosh leverages SSH to set up the connection and authenticate
-     users. Mosh does not contain any privileged (root) code.
-
-Getting Mosh
-------------
-
-  [The Mosh web site](https://mosh.org/#getting) has information about
-  packages for many operating systems, as well as instructions for building
-  from source.
-
-  Note that `mosh-client` receives an AES session key as an environment
-  variable.  If you are porting Mosh to a new operating system, please make
-  sure that a running process's environment variables are not readable by other
-  users.  We have confirmed that this is the case on GNU/Linux, OS X, and
-  FreeBSD.
-
-Usage
------
-
-  The `mosh-client` binary must exist on the user's machine, and the
-  `mosh-server` binary on the remote host.
-
-  The user runs:
-
-    $ mosh [user@]host
-
-  If the `mosh-client` or `mosh-server` binaries live outside the user's
-  `$PATH`, `mosh` accepts the arguments `--client=PATH` and `--server=PATH` to
-  select alternate locations. More options are documented in the mosh(1) manual
-  page.
-
-  There are [more examples](https://mosh.org/#usage) and a
-  [FAQ](https://mosh.org/#faq) on the Mosh web site.
-
-How it works
-------------
-
-  The `mosh` program will SSH to `user@host` to establish the connection.
-  SSH may prompt the user for a password or use public-key
-  authentication to log in.
-
-  From this point, `mosh` runs the `mosh-server` process (as the user)
-  on the server machine. The server process listens on a high UDP port
-  and sends its port number and an AES-128 secret key back to the
-  client over SSH. The SSH connection is then shut down and the
-  terminal session begins over UDP.
-
-  If the client changes IP addresses, the server will begin sending
-  to the client on the new IP address within a few seconds.
-
-  To function, Mosh requires UDP datagrams to be passed between client
-  and server. By default, `mosh` uses a port number between 60000 and
-  61000, but the user can select a particular port with the -p option.
-  Please note that the -p option has no effect on the port used by SSH.
-
-Advice to distributors
-----------------------
-
-A note on compiler flags: Mosh is security-sensitive code. When making
-automated builds for a binary package, we recommend passing the option
-`--enable-compile-warnings=error` to `./configure`. On GNU/Linux with
-`g++` or `clang++`, the package should compile cleanly with
-`-Werror`. Please report a bug if it doesn't.
-
-Where available, Mosh builds with a variety of binary hardening flags
-such as `-fstack-protector-all`, `-D_FORTIFY_SOURCE=2`, etc.  These
-provide proactive security against the possibility of a memory
-corruption bug in Mosh or one of the libraries it uses.  For a full
-list of flags, search for `HARDEN` in `configure.ac`.  The `configure`
-script detects which flags are supported by your compiler, and enables
-them automatically.  To disable this detection, pass
-`--disable-hardening` to `./configure`.  Please report a bug if you
-have trouble with the default settings; we would like as many users as
-possible to be running a configuration as secure as possible.
-
-Mosh ships with a default optimization setting of `-O2`. Some
-distributors have asked about changing this to `-Os` (which causes a
-compiler to prefer space optimizations to time optimizations). We have
-benchmarked with the included `src/examples/benchmark` program to test
-this. The results are that `-O2` is 40% faster than `-Os` with g++ 4.6
-on GNU/Linux, and 16% faster than `-Os` with clang++ 3.1 on Mac OS
-X. In both cases, `-Os` did produce a smaller binary (by up to 40%,
-saving almost 200 kilobytes on disk). While Mosh is not especially CPU
-intensive and mostly sits idle when the user is not typing, we think
-the results suggest that `-O2` (the default) is preferable.
-
-Our Debian and Fedora packaging presents Mosh as a single package.
-Mosh has a Perl dependency that is only required for client use.  For
-some platforms, it may make sense to have separate mosh-server and
-mosh-client packages to allow mosh-server usage without Perl.
-
-More info
----------
-
-  * Mosh Web site:
-
-    <https://mosh.org>
-
-  * `[email protected]` mailing list:
-
-    <https://mailman.mit.edu/mailman/listinfo/mosh-devel>
-
-  * `[email protected]` mailing list:
-
-    <https://mailman.mit.edu/mailman/listinfo/mosh-users>
-
-  * `#mosh` channel on [Libera Chat](https://libera.chat/)
-
-    https://web.libera.chat/#mosh
+Thanks:
+ - https://github.com/dtinth/mosh-static
+ - https://github.com/rinne/mosh