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57 lines
1.5 KiB
Nix
57 lines
1.5 KiB
Nix
# bisq2 contains a separate Java app which is used to scan Bitcoin Lightning QR codes.
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# bisq2 communicates with the webcam app via a local TCP connection using a simple one-way protocol.
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# Since the webcam app dynamically loads native code, this package is for maintainers to test QR code scanning without having to spend bitcoin to execute a trade.
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# This package is exposed as an attribute of the bisq2 package; bisq2.webcam-app.
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{
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stdenv,
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lib,
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makeBinaryWrapper,
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jdk,
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writeShellScript,
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unzip,
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bisq2,
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socat,
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libraryPath,
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}:
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let
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version = "1.0.0";
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launcher = writeShellScript "bisq2-webcam-app-launcher" ''
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${socat}/bin/socat TCP-LISTEN:8000,keepalive,fork STDIO &
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socat_pid=$!
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LD_LIBRARY_PATH=${libraryPath} "${lib.getExe jdk}" -classpath @out@/lib/app/webcam-app-${version}-all.jar:${bisq2}/lib/app/* bisq.webcam.WebcamAppLauncher "$@"
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kill $socat_pid
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'';
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in
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stdenv.mkDerivation rec {
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inherit version;
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pname = "bisq2-webcam-app";
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src = bisq2;
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dontUnpack = true;
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nativeBuildInputs = [
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makeBinaryWrapper
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unzip
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];
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buildPhase = ''
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# Extract the webcam app from Bisq2.
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unzip ${bisq2}/lib/app/desktop.jar 'webcam-app/*'
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unzip webcam-app/webcam-app-1.0.0.zip
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'';
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installPhase = ''
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runHook preInstall
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mkdir -p $out/lib/app $out/bin
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cp webcam-app-${version}-all.jar $out/lib/app/
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install -D -m 777 ${launcher} $out/bin/bisq2-webcam-app
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substituteAllInPlace $out/bin/bisq2-webcam-app
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runHook postInstall
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'';
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}
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