qrexec: adjust DispVM code to the new qrexec API

Note, we have qvm-open-in-vm totally for free.

appvm/Makefile

@@ -1,9 +1,9 @@
 CC=gcc
 CFLAGS=-g -Wall -I../common -fPIC -pie
-all:	dvm_file_editor qfile-agent-dvm qfile-agent qfile-unpacker
-dvm_file_editor: dvm_file_editor.o ../common/ioall.o
+all:	vm-file-editor qopen-in-vm qfile-agent qfile-unpacker
+vm-file-editor: vm-file-editor.o ../common/ioall.o
 	$(CC) -pie -g -o $@ $^
-qfile-agent-dvm: qfile-agent-dvm.o ../common/ioall.o ../common/gui-fatal.o
+qopen-in-vm: qopen-in-vm.o ../common/ioall.o ../common/gui-fatal.o
 	$(CC) -pie -g -o $@ $^
 qfile-agent: qfile-agent.o ../common/ioall.o ../common/gui-fatal.o ../common/copy_file.o ../common/crc32.o
 	$(CC) -pie -g -o $@ $^
@@ -11,4 +11,4 @@ qfile-unpacker: qfile-unpacker.o ../common/ioall.o ../common/gui-fatal.o ../comm
 	$(CC) -pie -g -o $@ $^
 
 clean:
-	rm -f qfile-agent-dvm qfile-agent qfile-unpacker dvm_file_editor *.o *~
+	rm -f qopen-in-vm qfile-agent qfile-unpacker vm-file-editor *.o *~

appvm/qopen-in-vm.c

@@ -93,47 +93,11 @@ void talk_to_daemon(char *fname)
 	recv_file(fname);
 }
 
-void process_spoolentry(char *entry_name)
-{
-	char *abs_spool_entry_name;
-	int entry_fd;
-	struct stat st;
-	char *filename;
-	int entry_size;
-	asprintf(&abs_spool_entry_name, "%s/%s", DVM_SPOOL, entry_name);
-	entry_fd = open(abs_spool_entry_name, O_RDONLY);
-	unlink(abs_spool_entry_name);
-	if (entry_fd < 0 || fstat(entry_fd, &st))
-		gui_fatal("bad dvm_entry");
-	entry_size = st.st_size;
-	filename = calloc(1, entry_size + DVM_FILENAME_SIZE);
-	if (!filename)
-		gui_fatal("malloc");
-	if (!read_all(entry_fd, filename, entry_size))
-		gui_fatal("read dvm entry %s", abs_spool_entry_name);
-	close(entry_fd);
-	talk_to_daemon(filename);
-}
-
-void scan_spool(char *name)
-{
-	struct dirent *ent;
-	DIR *dir = opendir(name);
-	if (!dir)
-		gui_fatal("opendir %s", name);
-	while ((ent = readdir(dir))) {
-		char *fname = ent->d_name;
-		if (!strcmp(fname, ".") || !strcmp(fname, ".."))
-			continue;
-		process_spoolentry(fname);
-		break;
-	}
-	closedir(dir);
-}
-
-int main()
+int main(int argc, char ** argv)
 {
 	signal(SIGPIPE, SIG_IGN);
-	scan_spool(DVM_SPOOL);
+	if (argc!=2) 
+		gui_fatal("OpenInVM - no file given?");
+	talk_to_daemon(argv[1]);
 	return 0;
 }	

appvm/qubes.OpenInVM

@@ -0,0 +1 @@
+/usr/lib/qubes/vm-file-editor

appvm/qubes.OpenInVM.policy

@@ -0,0 +1,2 @@
+anyvm	dispvm	allow
+anyvm	anyvm	ask

appvm/qvm-open-in-dvm2

@@ -25,16 +25,4 @@ if ! [ $# = 1 ] ; then
 	exit 1
 fi
 
-FILE="$1"
-if ! [ "X""${FILE:0:1}" = X/ ] ; then
-	FILE="$PWD"/"$1"
-fi
-
-DVMSPOOL=/home/user/.dvmspool
-if ! [ -e $DVMSPOOL ] ; then
-	mkdir $DVMSPOOL || exit 1
-fi
-
-echo -n "$FILE" > $DVMSPOOL/req.$$
-echo -n DVMR > /var/run/qubes/qrexec_agent
-	
+exec /usr/lib/qubes/qrexec_client_vm "/usr/lib/qubes/qopen-in-vm" dispvm qubes.OpenInVM "$1"

appvm/qvm-open-in-vm

@@ -0,0 +1,28 @@
+#!/bin/bash
+#
+# The Qubes OS Project, http://www.qubes-os.org
+#
+# Copyright (C) 2010  Rafal Wojtczuk  <rafal@invisiblethingslab.com>
+#
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License
+# as published by the Free Software Foundation; either version 2
+# of the License, or (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+#
+#
+
+if ! [ $# = 2 ] ; then 
+	echo "Usage: $0 vmname filename"
+	exit 1
+fi
+
+exec /usr/lib/qubes/qrexec_client_vm "/usr/lib/qubes/qopen-in-vm" "$1" qubes.OpenInVM "$2"

dom0/restore/qfile-daemon-dvm

@@ -124,15 +124,18 @@ class QfileDaemonDvm:
 
 def main():
     global notify_object
+    exec_index = sys.argv[1]
+    src_vmname = sys.argv[2]
     notify_object = dbus.SessionBus().get_object("org.freedesktop.Notifications", "/org/freedesktop/Notifications")
-    qfile = QfileDaemonDvm(os.getenv("QREXEC_REMOTE_DOMAIN"))
+    qfile = QfileDaemonDvm(src_vmname)
     lockf = open("/var/run/qubes/qfile-daemon-dvm.lock", 'a')
     fcntl.fcntl(lockf, fcntl.F_SETFD, fcntl.FD_CLOEXEC)
     fcntl.flock(lockf, fcntl.LOCK_EX)
     dispname = qfile.get_dvm()
     lockf.close()
     if dispname is not None:
-        subprocess.call(['/usr/lib/qubes/qrexec_client', '-d', dispname, 'directly:user:/usr/lib/qubes/dvm_file_editor'])
+        subprocess.call(['/usr/lib/qubes/qrexec_client', '-d', dispname,
+            'user:exec /usr/lib/qubes/qubes_rpc_multiplexer ' + exec_index + " " + src_vmname])
         subprocess.call(['/usr/sbin/xl', 'destroy', dispname])
         qfile.remove_disposable_from_qdb(dispname)
 

qrexec/qrexec_policy

@@ -33,6 +33,9 @@ def apply_policy(policy, domain, target):
     return (None, None)
         
 def do_execute(domain, target, exec_index, process_ident):
+    if target == "dispvm":
+        cmd = "/usr/lib/qubes/qfile-daemon-dvm " + exec_index + " " + domain
+    else:
         cmd= "qvm-run -uroot -q -a --pass_io "+target
         cmd+=" '/usr/lib/qubes/qubes_rpc_multiplexer "+exec_index + " " + domain + "'"
     os.execl(QREXEC_CLIENT, "qrexec_client", "-d", domain, "-l", cmd, "-c", process_ident)

rpm_spec/core-appvm.spec

@@ -75,6 +75,7 @@ cp qubes_core_appvm $RPM_BUILD_ROOT/etc/init.d/
 mkdir -p $RPM_BUILD_ROOT/var/lib/qubes
 mkdir -p $RPM_BUILD_ROOT/usr/bin
 cp qubes_timestamp qvm-open-in-dvm2 $RPM_BUILD_ROOT/usr/bin
+cp qvm-open-in-vm $RPM_BUILD_ROOT/usr/bin
 cp qvm-copy-to-vm $RPM_BUILD_ROOT/usr/bin
 mkdir -p $RPM_BUILD_ROOT/usr/lib/qubes
 cp qvm-copy-to-vm2.kde $RPM_BUILD_ROOT/usr/lib/qubes
@@ -82,14 +83,14 @@ cp qvm-copy-to-vm2.gnome $RPM_BUILD_ROOT/usr/lib/qubes
 cp ../qrexec/qrexec_agent $RPM_BUILD_ROOT/usr/lib/qubes
 cp ../qrexec/qrexec_client_vm $RPM_BUILD_ROOT/usr/lib/qubes
 cp ../qrexec/qubes_rpc_multiplexer $RPM_BUILD_ROOT/usr/lib/qubes
-cp dvm_file_editor qfile-agent qfile-agent-dvm qfile-unpacker $RPM_BUILD_ROOT/usr/lib/qubes
+cp vm-file-editor qfile-agent qopen-in-vm qfile-unpacker $RPM_BUILD_ROOT/usr/lib/qubes
 cp ../common/meminfo-writer $RPM_BUILD_ROOT/usr/lib/qubes
 mkdir -p $RPM_BUILD_ROOT/%{kde_service_dir}
 cp qvm-copy.desktop qvm-dvm.desktop $RPM_BUILD_ROOT/%{kde_service_dir}
 mkdir -p $RPM_BUILD_ROOT/mnt/removable
 mkdir -p $RPM_BUILD_ROOT/etc/qubes_rpc
 cp qubes.Filecopy $RPM_BUILD_ROOT/etc/qubes_rpc
-
+cp qubes.OpenInVM $RPM_BUILD_ROOT/etc/qubes_rpc
 
 mkdir -p $RPM_BUILD_ROOT/etc/X11
 cp xorg-preload-apps.conf $RPM_BUILD_ROOT/etc/X11
@@ -140,19 +141,21 @@ rm -rf $RPM_BUILD_ROOT
 /usr/lib/qubes/qvm-copy-to-vm2.kde
 /usr/lib/qubes/qvm-copy-to-vm2.gnome
 /usr/bin/qvm-open-in-dvm2
+/usr/bin/qvm-open-in-vm
 /usr/lib/qubes/meminfo-writer
-/usr/lib/qubes/dvm_file_editor
+/usr/lib/qubes/vm-file-editor
 %{kde_service_dir}/qvm-copy.desktop
 %{kde_service_dir}/qvm-dvm.desktop
 /usr/lib/qubes/qrexec_agent
 /usr/lib/qubes/qrexec_client_vm
 /usr/lib/qubes/qubes_rpc_multiplexer
 /usr/lib/qubes/qfile-agent
-/usr/lib/qubes/qfile-agent-dvm
+/usr/lib/qubes/qopen-in-vm
 /usr/lib/qubes/qfile-unpacker
 %dir /mnt/removable
 %dir /etc/qubes_rpc
 /etc/qubes_rpc/qubes.Filecopy
+/etc/qubes_rpc/qubes.OpenInVM
 /usr/bin/qubes_timestamp
 %dir /home_volatile
 %attr(700,user,user) /home_volatile/user

rpm_spec/core-dom0.spec

@@ -101,6 +101,7 @@ cp aux-tools/qfile-dom0-unpacker $RPM_BUILD_ROOT/usr/lib/qubes/
 
 mkdir -p $RPM_BUILD_ROOT/etc/qubes_rpc/policy
 cp ../appvm/qubes.Filecopy.policy $RPM_BUILD_ROOT/etc/qubes_rpc/policy/qubes.Filecopy
+cp ../appvm/qubes.OpenInVM.policy $RPM_BUILD_ROOT/etc/qubes_rpc/policy/qubes.OpenInVM
 
 cp restore/qvm-create-default-dvm $RPM_BUILD_ROOT/usr/bin
 cp restore/xenstore-watch $RPM_BUILD_ROOT/usr/bin/xenstore-watch-qubes
@@ -326,6 +327,7 @@ fi
 /usr/lib/qubes/qrexec_policy
 %dir /etc/qubes_rpc/policy
 /etc/qubes_rpc/policy/qubes.Filecopy
+/etc/qubes_rpc/policy/qubes.OpenInVM
 %attr(4750,root,qubes) /usr/lib/qubes/qrexec_daemon
 %attr(4750,root,qubes) /usr/lib/qubes/xenfreepages
 %attr(2770,root,qubes) %dir /var/log/qubes