Add qvm-showterminal

Makefile

@@ -317,6 +317,8 @@ install-common: install-doc
 	
 	install -m 0755 misc/tinyproxy-wrapper $(DESTDIR)/usr/lib/qubes/tinyproxy-wrapper
 
+	install -m 0755 misc/qvm-showterminal $(DESTDIR)$(BINDIR)/qvm-showterminal
+
 	install -d $(DESTDIR)/var/run/qubes
 	install -d $(DESTDIR)/rw
 

debian/qubes-core-agent.install

@@ -100,6 +100,7 @@ usr/bin/qvm-move-to-vm
 usr/bin/qvm-open-in-dvm
 usr/bin/qvm-open-in-vm
 usr/bin/qvm-run-vm
+usr/bin/qvm-showterminal
 usr/bin/qvm-sync-clock
 usr/bin/xenstore-watch-qubes
 usr/lib/python2.7/dist-packages/qubesagent-*.egg-info/*

misc/qvm-showterminal

@@ -0,0 +1,24 @@
+#!/bin/bash
+QREXEC_REQUESTED_TARGET="$1"
+
+qrexec_console() {
+    QREXEC_REQUESTED_TARGET="$1"
+
+    qrexec-client-vm "$QREXEC_REQUESTED_TARGET" qubes.ShowTerminal 2>/dev/null
+
+    # exit code 200 is flock exit code in qubes.ShowTerminal
+    exit_code=$?
+    if [ $exit_code -gt 0 ]; then
+        if [ $exit_code -ne 200 ]; then
+            printf "Cannot connect to %s" "$QREXEC_REQUESTED_TARGET"
+        else
+            printf "A qube is already connected to %s" "$QREXEC_REQUESTED_TARGET"
+        fi
+        exit 1
+    fi
+}
+
+export -f qrexec_console
+
+socat file:/dev/tty,rawer,escape=0x0f SYSTEM:"qrexec_console $QREXEC_REQUESTED_TARGET" 2>/dev/null
+printf '\n'

rpm_spec/core-agent.spec.in

@@ -627,6 +627,7 @@ rm -f %{name}-%{version}
 /usr/bin/qubes-run-terminal
 /usr/bin/qubes-open
 /usr/bin/qubes-session-autostart
+/usr/bin/qvm-showterminal
 %dir /usr/lib/qubes
 /usr/lib/qubes/prepare-suspend
 /usr/lib/qubes/qfile-agent