qubes-rpc: fix icon selection using pyxdg and support SVG icons

Makefile

@@ -180,6 +180,7 @@ install-common:
 	install qubes-rpc/qvm-copy-to-vm.gnome $(DESTDIR)$(LIBDIR)/qubes
 	install qubes-rpc/qvm-move-to-vm.kde $(DESTDIR)$(LIBDIR)/qubes
 	install qubes-rpc/qvm-move-to-vm.gnome $(DESTDIR)$(LIBDIR)/qubes
+	install qubes-rpc/xdg-icon $(DESTDIR)$(LIBDIR)/qubes
 	install qubes-rpc/{vm-file-editor,qfile-agent,qopen-in-vm} $(DESTDIR)$(LIBDIR)/qubes
 	install qubes-rpc/tar2qfile $(DESTDIR)$(LIBDIR)/qubes
 	# Install qfile-unpacker as SUID - because it will fail to receive files from other vm

debian/control

@@ -19,6 +19,7 @@ Depends:
     initscripts,
     iptables,
     iptables-persistent,
+    librsvg2-bin,
     libvchan-xen,
     locales,
     ncurses-term,

qubes-rpc/qubes.GetImageRGBA

@@ -1,22 +1,13 @@
 set -e
 read filename
 
+ICON_MAXSIZE=512
+
 if [ "${filename%%:*}" = xdgicon ]; then
-    # get biggest icon from hicolor theme
-
-    filename="${filename#*:}.png"
-    candidate=
-    for dir in /usr/share/icons/hicolor/ /usr/share/icons/; do
-        candidate=$(find -L "${dir}" -type f -name "${filename}")
-        if [ -n "${candidate}" ]; then
-            candidate=$(echo "${candidate}" | xargs ls --sort=size | head -1)
-            break
-        fi
-    done
-
-    [ -n "${candidate}" ]
-    filename="${candidate}"
+    filename="$(/usr/lib/qubes/xdg-icon "${filename#*:}" "$ICON_MAXSIZE")"
+    forcesize="$ICON_MAXSIZE"
 
+    [ -n "${filename}" ]
 elif [ "${filename}" = "-" ] || [ "${filename##*:}" = "-" ]; then
     tmpfile="$(mktemp /tmp/qimg-XXXXXXXX)"
     cat > "${tmpfile}"
@@ -29,11 +20,23 @@ elif ! [ -r "${filename}" ]; then
     exit 1
 fi
 
-# identify in F18 (6.7) adds implicit '\n' to format,
-# whereas identify in F20 (6.8) does not
-identify -format '%w %h\n' "$filename" | sed -e '/^$/d'
-convert -depth 8 "$filename" rgba:-
+s="$(identify -format '%w %h %m' "$filename")"
+w="$(echo "$s"|cut -d " " -f 1)"
+h="$(echo "$s"|cut -d " " -f 2)"
+m="$(echo "$s"|cut -d " " -f 3)"
+if [ "$m" = SVG ]; then
+    if [ -n "$forcesize" ]; then
+        w="$forcesize"
+        h="$forcesize"
+    fi
+    tmpfile2="$(mktemp /tmp/qimg-XXXXXXXX.png)"
+    rsvg-convert -w "$w" -h "$h" -o "$tmpfile2" "$filename"
+    filename="$tmpfile2"
+fi
+echo "$w $h"
+convert -depth 8 -size "${w}x${h}" "$filename" rgba:-
 
 [ -n "${tmpfile}" ] && rm -f "${tmpfile}" || true
+[ -n "${tmpfile2}" ] && rm -f "${tmpfile2}" || true
 
 # vim: ft=sh ts=4 sw=4 et

qubes-rpc/xdg-icon

@@ -0,0 +1,21 @@
+#!/usr/bin/python
+import xdg.IconTheme
+import sys
+import os
+
+themes = ['Humanity', 'Adwaita', 'gnome', 'oxygen']
+themes = themes + sorted([d for d in os.listdir("/usr/share/icons") if d not in themes and os.path.isdir("/usr/share/icons/" + d)])
+
+if len(sys.argv) < 3:
+	print "Usage:", sys.argv[0], "ICON SIZE"
+	sys.exit(1)
+
+for theme in themes:
+	icon = xdg.IconTheme.getIconPath(sys.argv[1], theme = theme, size = int(sys.argv[2]))
+	if icon is not None:
+		break
+
+if icon is None:
+	sys.exit(1)
+
+print icon

rpm_spec/core-vm.spec

@@ -51,13 +51,14 @@ Requires:   qubes-utils
 Requires:   initscripts
 # for qubes-desktop-run
 Requires:   pygobject3-base
-# for qubes-session-autostart
+# for qubes-session-autostart, xdg-icon
 Requires:   pyxdg
 %if %{fedora} >= 20
 # gpk-update-viewer required by qubes-manager
 Requires:   gnome-packagekit-updater
 %endif
 Requires:   ImageMagick
+Requires:   librsvg2-tools
 Requires:   fakeroot
 Requires:   desktop-notification-daemon
 Requires:   pygtk2
@@ -410,6 +411,7 @@ rm -f %{name}-%{version}
 /usr/lib/qubes/wrap-in-html-if-url.sh
 /usr/lib/qubes/iptables-updates-proxy
 /usr/lib/qubes/close-window
+/usr/lib/qubes/xdg-icon
 /usr/lib/yum-plugins/yum-qubes-hooks.py*
 /usr/lib64/python2.7/site-packages/qubes/xdg.py*
 /usr/sbin/qubes-firewall