Use new built-in TCP support in qrexec for qubes.ConnectTCP

Enable exit-on-stdout-eof feature, since that is what socat did.

QubesOS/qubes-issues#9037

Author: marmarek

debian/qubes-core-agent.install

@@ -43,6 +43,7 @@ etc/qubes/autostart/*
 etc/qubes/applications/*
 etc/qubes/post-install.d/README
 etc/qubes/post-install.d/*.sh
+etc/qubes/rpc-config/qubes.ConnectTCP
 etc/qubes/rpc-config/qubes.OpenInVM
 etc/qubes/rpc-config/qubes.OpenURL
 etc/qubes/rpc-config/qubes.SelectFile

qubes-rpc/Makefile

@@ -76,10 +76,10 @@ install:
 		qubes.PostInstall \
 		qubes.GetDate \
 		qubes.ShowInTerminal \
-		qubes.ConnectTCP \
 		qubes.TemplateSearch \
 		qubes.TemplateDownload
 	$(LN) qubes.VMExec $(DESTDIR)$(QUBESRPCCMDDIR)/qubes.VMExecGUI
+	$(LN) /dev/tcp/127.0.0.1 $(DESTDIR)$(QUBESRPCCMDDIR)/qubes.ConnectTCP
 	for config in *.config; do \
 		install -D -m 0644 "$$config" "$(DESTDIR)$(QUBESRPCCONFDIR)/$${config%.config}"; \
 	done

qubes-rpc/qubes.ConnectTCP

@@ -0,0 +1,2 @@
+skip-service-descriptor=true
+exit-on-stdout-eof=true

qubes-rpc/qubes.ConnectTCP.config

@@ -909,6 +909,7 @@ rm -f %{name}-%{version}
 %config(noreplace) /etc/qubes-rpc/qubes.StartApp
 %config(noreplace) /etc/qubes-rpc/qubes.PostInstall
 %config(noreplace) /etc/qubes-rpc/qubes.GetDate
+%config(noreplace) /etc/qubes/rpc-config/qubes.ConnectTCP
 %config(noreplace) /etc/qubes/rpc-config/qubes.OpenInVM
 %config(noreplace) /etc/qubes/rpc-config/qubes.OpenURL
 %config(noreplace) /etc/qubes/rpc-config/qubes.SelectFile