Copy nping, nsock, nbase, zenmap, ncat from their homes in /.

If you have trouble updating after this revision you need to follow
these instructions. You have probably just seen an error like this:

svn: URL 'svn://svn.insecure.org/nping' of existing directory 'nping'
does not match expected URL 'svn://svn.insecure.org/nmap/nping'

This is caused by the replacement of SVN externals.

Here's what you need to do. First, save any local changes you might have
in the nping, nsock, nbase, ncat, and zenmap directories. (For example
by running "cd nping; svn diff > ../nping.diff".) If you don't have any
local changes you can skip this step.

Then run these commands:

rm -rf nping/ nsock/ nbase/ ncat/ zenmap/
svn update
svn cleanup

If all else fails, you can just delete your whole working directory and
check out anew:

svn co --username guest --password "" svn://svn.insecure.org/nmap

There may be further discussion in the mailing list thread at
http://seclists.org/nmap-dev/2011/q4/303.

zenmap/zenmapGUI/FilterBar.py

@@ -0,0 +1,74 @@
+import gtk
+import gobject
+
+from zenmapGUI.higwidgets.higboxes import HIGHBox
+from zenmapGUI.higwidgets.higlabels import HintWindow
+
+class FilterBar(HIGHBox):
+    """This is the bar that appears while the host filter is active. It allows
+    entering a string that restricts the set of visible hosts."""
+
+    __gsignals__ = {
+        "changed": (gobject.SIGNAL_RUN_FIRST, gobject.TYPE_NONE, ())
+    }
+
+    def __init__(self):
+        HIGHBox.__init__(self)
+        self.information_label = gtk.Label()
+        self.entry = gtk.Entry()
+
+        self.pack_start(self.information_label, False)
+        self.information_label.show()
+
+        label = gtk.Label(_("Host Filter:"))
+        self.pack_start(label, False)
+        label.show()
+
+        self.pack_start(self.entry, True, True)
+        self.entry.show()
+
+        help_button = gtk.Button()
+        icon = gtk.Image()
+        icon.set_from_stock(gtk.STOCK_INFO, gtk.ICON_SIZE_BUTTON)
+        help_button.add(icon)
+        help_button.connect("clicked", self._help_button_clicked)
+        self.pack_start(help_button, False)
+        help_button.show_all()
+
+        self.entry.connect("changed", lambda x: self.emit("changed"))
+
+    def grab_focus(self):
+        self.entry.grab_focus()
+
+    def get_filter_string(self):
+        return self.entry.get_text().decode("UTF-8")
+
+    def set_filter_string(self, filter_string):
+        return self.entry.set_text(filter_string)
+
+    def set_information_text(self, text):
+        self.information_label.set_text(text)
+
+    def _help_button_clicked(self, button):
+        hint_window = HintWindow(HELP_TEXT)
+        hint_window.show_all()
+
+HELP_TEXT = _("""\
+Entering the text into the search performs a <b>keyword search</b> - the \
+search string is matched against every aspect of the host.
+
+To refine the search, you can use <b>operators</b> to search only \
+specific fields within a host. Most operators have a short form, listed. \
+
+<b>target: (t:)</b> - User-supplied target, or a rDNS result.
+<b>os:</b> - All OS-related fields.
+<b>open: (op:)</b> - Open ports discovered in a scan.
+<b>closed: (cp:)</b> - Closed ports discovered in a scan.
+<b>filtered: (fp:)</b> - Filtered ports discovered in scan.
+<b>unfiltered: (ufp:)</b> - Unfiltered ports found in a scan (using, for \
+example, an ACK scan).
+<b>open|filtered: (ofp:)</b> - Ports in the \"open|filtered\" state.
+<b>closed|filtered: (cfp:)</b> - Ports in the \"closed|filtered\" state.
+<b>service: (s:)</b> - All service-related fields.
+<b>inroute: (ir:)</b> - Matches a router in the scan's traceroute output.
+""")