add snap build tools

.gitignore

@@ -23,3 +23,4 @@ _testmain.go
 *.test
 *.prof
 sshpiperd/example/sshpiperd_key*
+snap

sshpiperd/snap/build.sh

@@ -0,0 +1,4 @@
+#!/bin/bash
+
+snapcraft clean
+snapcraft

sshpiperd/snap/docker-compose.yml

@@ -0,0 +1,23 @@
+version: '3'
+
+services:
+  snap:
+    image: snapcore/snapcraft
+    volumes:
+      - build:/build
+      - .:/snap
+    working_dir: /snap
+    depends_on:
+      - piper
+    command:
+      - "./build.sh"
+  piper:
+    build: ../..
+    volumes:
+      - build:/build
+    command:
+      - "/bin/cp"
+      - "/go/bin/sshpiperd"
+      - "/build/sshpiperd"
+volumes:
+  build: 

sshpiperd/snap/snap/.snapcraft/state

@@ -0,0 +1,4 @@
+!GlobalState
+assets:
+  build-packages: []
+  build-snaps: []

sshpiperd/snap/snap/hooks/configure

@@ -0,0 +1,26 @@
+#!/bin/sh
+set -e
+
+bin=$SNAP/sshpiperd
+config=$SNAP_DATA/sshpiperd.ini
+
+args=""
+for opt in $($bin options); do
+    v=$(snapctl get $opt)
+
+    if [ "$v" != "" ]; then
+        v=$(eval echo $v)
+        args="$args --$opt=$v"
+    
+    # special default
+    elif [ "$opt" = "workingdir" ]; then
+        mkdir -p $SNAP_COMMON/workingdir
+        args="$args --$opt=$SNAP_COMMON/workingdir"
+    elif [ "$opt" = "auditor-typescriptlogger-outputdir" ]; then
+        mkdir -p $SNAP_COMMON/typescriptlog
+        args="$args --$opt=$SNAP_COMMON/typescriptlog"
+    fi
+done
+
+echo ";DO NOT MODIFY, USE snap set sshpiperd key=val, AUTO GENERATED" $(date) > $config
+$bin --config /dev/null $args dumpconfig >> $config

sshpiperd/snap/snapcraft.yaml

@@ -0,0 +1,23 @@
+name: sshpiperd
+version: 0.3
+summary: The missing reverse proxy for ssh
+description: |
+  SSH Piper works as a proxy-like ware, and route connections by username, src ip , etc.
+
+grade: devel
+confinement: devmode
+
+parts:
+  sshpiperd:
+    plugin: dump
+    source: /build
+
+apps:
+  sshpiperd:
+    command: sshpiperd --config $SNAP_DATA/sshpiperd.ini
+    plugs: [network-bind]
+    daemon: simple
+
+hooks:
+  configure:
+    plugs: []