libclipboard

.devcontainer/Dockerfile

@@ -4,7 +4,7 @@ FROM debian:stretch-slim
 # cluster fuck of packages for neko, node, go and gstreamer
 RUN set -eux; apt-get update; apt-get install -y --no-install-recommends \
   autoconf ca-certificates curl netbase wget \
-  bzr git mercurial openssh-client subversion procps automake bzip2 dpkg-dev file g++ gcc \
+  bzr git mercurial openssh-client subversion procps cmake automake bzip2 dpkg-dev file g++ gcc \
   libbz2-dev libc6-dev libcurl4-openssl-dev libdb-dev libevent-dev libffi-dev libgdbm-dev libglib2.0-dev libgmp-dev \
   libjpeg-dev libkrb5-dev liblzma-dev libmagickcore-dev libmagickwand-dev libmaxminddb-dev libncurses5-dev libncursesw5-dev \
   libpng-dev libpq-dev libreadline-dev libsqlite3-dev libssl-dev libtool libwebp-dev libxml2-dev libxslt-dev libyaml-dev  \
@@ -96,6 +96,17 @@ RUN set -eux; \
 ENV GOPATH /go
 ENV PATH $GOPATH/bin:/usr/local/go/bin:$PATH
 
+#
+# install libclipboard
+RUN set -eux; \
+    cd /tmp ; \
+    git clone https://github.com/jtanx/libclipboard ; \
+    cd libclipboard ; \
+    cmake -DBUILD_SHARED_LIBS=ON -DLIBCLIPBOARD_FORCE_X11=on -DLIBCLIPBOARD_ADD_SOVERSION=ON --prefix=/usr/local . ; \
+    make -j4; \
+    make install; \ 
+    rm -rf /tmp/libclipboard
+
 #
 # install Go tools w/module support
 RUN set -eux; \
@@ -156,6 +167,10 @@ ARG INSTALL_ZSH="true"
 ARG COMMON_SCRIPT_SOURCE="https://raw.githubusercontent.com/microsoft/vscode-dev-containers/master/script-library/common-debian.sh"
 ARG COMMON_SCRIPT_SHA="dev-mode"
 
+#
+# Docker Compose version
+ARG COMPOSE_VERSION=1.24.0
+
 #
 # verify git, common tools / libs installed, add/modify non-root user, optionally install zsh
 RUN set -eux; \

.devcontainer/devcontainer.json

@@ -11,15 +11,15 @@
 	"extensions": [
     "ms-vscode.go",
     "octref.vetur",
+    "ms-vscode.cpptools",
     "esbenp.prettier-vscode",
     "dbaeumer.vscode-eslint",
     "ms-vscode-remote.vscode-remote-extensionpack",
     "ms-vscode-remote.remote-containers",
     "ms-azuretools.vscode-docker",
     "editorconfig.editorconfig",
-    "psioniq.psi-header",
     "gruntfuggly.todo-tree",
-    "swyphcosmo.spellchecker",
+    "eamodio.gitlens",
-    "eamodio.gitlens"
+    "swyphcosmo.spellchecker"
 	]
 }

Dockerfile

@@ -1,5 +1,6 @@
 FROM debian:stretch-slim
 
+#
 # avoid warnings by switching to noninteractive
 ENV DEBIAN_FRONTEND=noninteractive
 
@@ -7,9 +8,27 @@ ARG USERNAME=neko
 ARG USER_UID=1000
 ARG USER_GID=$USER_UID
 
+#
+# install libclipboard
+RUN set -eux; apt-get update; \
+    apt-get install -y --no-install-recommends ca-certificates git cmake pkg-config build-essential libx11-dev ; \
+    cd /tmp ; \
+    git clone https://github.com/jtanx/libclipboard ; \
+    cd libclipboard ; \
+    cmake -DBUILD_SHARED_LIBS=ON -DLIBCLIPBOARD_FORCE_X11=on -DLIBCLIPBOARD_ADD_SOVERSION=ON --prefix=/usr/local . ; \
+    make -j4; \
+    make install; \ 
+    rm -rf /tmp/libclipboard ; \
+    #
+    # clean up
+    apt-get autoremove -y git cmake pkg-config build-essential libx11-dev; \
+    apt-get clean -y; \
+    rm -rf /var/lib/apt/lists/* /var/cache/apt/*
+
+#
 # install neko dependencies
 RUN set -eux; apt-get update; \
-    apt-get install -y --no-install-recommends wget ca-certificates pulseaudio openbox dbus-x11 xvfb xclip supervisor; \
+    apt-get install -y --no-install-recommends wget ca-certificates pulseaudio openbox dbus-x11 xvfb supervisor; \
     apt-get install -y --no-install-recommends libxv1 libopus0 libvpx4; \
     #
     # create a non-root user
@@ -31,15 +50,16 @@ RUN set -eux; apt-get update; \
     chown -R $USERNAME:$USERNAME /home/$USERNAME; \
     #
     # clean up
-    apt-get autoremove -y; \
     apt-get clean -y; \
     rm -rf /var/lib/apt/lists/* /var/cache/apt/*
 
+#
 # add gst to env
 ENV PATH=/gst/local/bin:$PATH
 ENV LD_LIBRARY_PATH=/gst/local/lib:$LD_LIBRARY_PATH
 ENV PKG_CONFIG_PATH=/gst/local/lib/pkgconfig:$PKG_CONFIG_PATH
 
+#
 # copy gst
 COPY .build/gst/local /gst/local/
 

neko.code-workspace

@@ -33,6 +33,7 @@
     "remote.containers.defaultExtensions": [
       "ms-vscode.go",
       "octref.vetur",
+      "ms-vscode.cpptools",
       "esbenp.prettier-vscode",
       "dbaeumer.vscode-eslint",
       "ms-vscode-remote.vscode-remote-extensionpack",
@@ -40,8 +41,8 @@
       "ms-azuretools.vscode-docker",
       "editorconfig.editorconfig",
       "gruntfuggly.todo-tree",
-      "swyphcosmo.spellchecker",
+      "eamodio.gitlens",
-      "eamodio.gitlens"
+      "swyphcosmo.spellchecker"
-    ],
+    ]
   }
 }

server/internal/clip/clip.c

@@ -0,0 +1,23 @@
+#include "clip.h"
+
+#include <libclipboard.h>
+#include <string.h>
+
+clipboard_c *CLIPBOARD = NULL;
+
+clipboard_c *getClipboard(void) {
+  if (CLIPBOARD == NULL) {
+    CLIPBOARD = clipboard_new(NULL);
+  }
+  return CLIPBOARD;
+}
+
+void set_clipboard(char *src) {
+  clipboard_c *cb = getClipboard();
+  clipboard_set_text_ex(cb, src, strlen(src), 0);
+}
+
+char * get_clipboard() {
+  clipboard_c *cb = getClipboard();
+  return clipboard_text_ex(cb, NULL, 0);
+}

server/internal/clip/clip.go

@@ -0,0 +1,21 @@
+// NOTE: I have no fucking clue what I'm doing with this,
+// it works, but I am positive I'm doing this very wrong...
+// should I be freeing these strings? does go cg them?
+// pretty sure this *isn't* thread safe either.... /shrug
+
+package clip
+
+/*
+#cgo linux LDFLAGS: -lclipboard
+
+#include "clip.h"
+*/
+import "C"
+
+func Read() string {
+	return C.GoString(C.get_clipboard())
+}
+
+func Write(data string) {
+	C.set_clipboard(C.CString(data))
+}

server/internal/clip/clip.h

@@ -0,0 +1,5 @@
+#include <libclipboard.h>
+
+clipboard_c *getClipboard(void);
+void set_clipboard(char *src);
+char * get_clipboard();

server/internal/hid/clipboard/clipboard.go

@@ -1,124 +0,0 @@
-package clipboard
-
-import (
-	"errors"
-	"os"
-	"os/exec"
-)
-
-const (
-	xsel               = "xsel"
-	xclip              = "xclip"
-	wlcopy             = "wl-copy"
-	wlpaste            = "wl-paste"
-	termuxClipboardGet = "termux-clipboard-get"
-	termuxClipboardSet = "termux-clipboard-set"
-)
-
-var (
-	Unsupported bool
-	Primary     bool
-
-	pasteCmdArgs []string
-	copyCmdArgs  []string
-
-	xselPasteArgs = []string{xsel, "--output", "--clipboard"}
-	xselCopyArgs  = []string{xsel, "--input", "--clipboard"}
-
-	xclipPasteArgs = []string{xclip, "-out", "-selection", "clipboard"}
-	xclipCopyArgs  = []string{xclip, "-in", "-selection", "clipboard"}
-
-	wlpasteArgs = []string{wlpaste, "--no-newline"}
-	wlcopyArgs  = []string{wlcopy}
-
-	termuxPasteArgs = []string{termuxClipboardGet}
-	termuxCopyArgs  = []string{termuxClipboardSet}
-
-	missingCommands = errors.New("No clipboard utilities available. Please install xsel, xclip, wl-clipboard or Termux:API add-on for termux-clipboard-get/set.")
-)
-
-func init() {
-	if os.Getenv("WAYLAND_DISPLAY") != "" {
-		pasteCmdArgs = wlpasteArgs
-		copyCmdArgs = wlcopyArgs
-
-		if _, err := exec.LookPath(wlcopy); err == nil {
-			if _, err := exec.LookPath(wlpaste); err == nil {
-				return
-			}
-		}
-	}
-
-	pasteCmdArgs = xclipPasteArgs
-	copyCmdArgs = xclipCopyArgs
-
-	if _, err := exec.LookPath(xclip); err == nil {
-		return
-	}
-
-	pasteCmdArgs = xselPasteArgs
-	copyCmdArgs = xselCopyArgs
-
-	if _, err := exec.LookPath(xsel); err == nil {
-		return
-	}
-
-	pasteCmdArgs = termuxPasteArgs
-	copyCmdArgs = termuxCopyArgs
-
-	if _, err := exec.LookPath(termuxClipboardSet); err == nil {
-		if _, err := exec.LookPath(termuxClipboardGet); err == nil {
-			return
-		}
-	}
-
-	Unsupported = true
-}
-
-func getPasteCommand() *exec.Cmd {
-	if Primary {
-		pasteCmdArgs = pasteCmdArgs[:1]
-	}
-	return exec.Command(pasteCmdArgs[0], pasteCmdArgs[1:]...)
-}
-
-func getCopyCommand() *exec.Cmd {
-	if Primary {
-		copyCmdArgs = copyCmdArgs[:1]
-	}
-	return exec.Command(copyCmdArgs[0], copyCmdArgs[1:]...)
-}
-
-func ReadAll() (string, error) {
-	if Unsupported {
-		return "", missingCommands
-	}
-	pasteCmd := getPasteCommand()
-	out, err := pasteCmd.Output()
-	if err != nil {
-		return "", err
-	}
-	return string(out), nil
-}
-
-func WriteAll(text string) error {
-	if Unsupported {
-		return missingCommands
-	}
-	copyCmd := getCopyCommand()
-	in, err := copyCmd.StdinPipe()
-	if err != nil {
-		return err
-	}
-
-	if err := copyCmd.Start(); err != nil {
-		return err
-	}
-	if _, err := in.Write([]byte(text)); err != nil {
-		return err
-	}
-	if err := in.Close(); err != nil {
-		return err
-	}
-	return copyCmd.Wait()
-}

server/internal/websocket/control.go

@@ -1,7 +1,7 @@
 package websocket
 
 import (
-	"n.eko.moe/neko/internal/hid/clipboard"
+	"n.eko.moe/neko/internal/clip"
 	"n.eko.moe/neko/internal/types"
 	"n.eko.moe/neko/internal/types/event"
 	"n.eko.moe/neko/internal/types/message"
@@ -113,6 +113,6 @@ func (h *MessageHandler) controlClipboard(id string, session types.Session, payl
 		return nil
 	}
 
-	clipboard.WriteAll(payload.Text)
+	clip.Write(payload.Text)
 	return nil
 }

server/internal/websocket/websocket.go

@@ -9,7 +9,7 @@ import (
 	"github.com/rs/zerolog"
 	"github.com/rs/zerolog/log"
 
-	"n.eko.moe/neko/internal/hid/clipboard"
+	"n.eko.moe/neko/internal/clip"
 	"n.eko.moe/neko/internal/types"
 	"n.eko.moe/neko/internal/types/config"
 	"n.eko.moe/neko/internal/types/event"
@@ -81,11 +81,7 @@ func (ws *WebSocketHandler) Start() error {
 			ws.logger.Info().Msg("shutdown")
 		}()
 
-		current := ""
+		current := clip.Read()
-		clip, err := clipboard.ReadAll()
-		if err == nil && clip != current {
-			current = clip
-		}
 
 		for {
 			select {
@@ -93,16 +89,16 @@ func (ws *WebSocketHandler) Start() error {
 				return
 			default:
 				if ws.sessions.HasHost() {
-					clip, err := clipboard.ReadAll()
+					text := clip.Read()
-					if err == nil && clip != current {
+					if text != current {
 						session, ok := ws.sessions.GetHost()
 						if ok {
 							session.Send(message.Clipboard{
 								Event: event.CONTROL_CLIPBOARD,
-								Text:  clip,
+								Text:  text,
 							})
 						}
-						current = clip
+						current = text
 					}
 				}
 				time.Sleep(100 * time.Millisecond)