Fix #1167951 (Restrict the library when running calibre-server)

manual/server.rst

@@ -91,7 +91,11 @@ First, we have to create a WSGI *adapter* for the calibre content server. Here i
             # Path to the calibre library to be served
             # The server process must have write permission for all files/dirs
             # in this directory or BAD things will happen
-            path_to_library='/home/kovid/documents/demo library'
+            path_to_library='/home/kovid/documents/demo library',
+
+            # The virtual library (restriction) to be used when serving this
+            # library. 
+            virtual_library=None
     )
 
     del create_wsgi_app

src/calibre/library/server/main.py

@@ -24,7 +24,7 @@ def stop_threaded_server(server):
     server.exit()
     server.thread = None
 
-def create_wsgi_app(path_to_library=None, prefix=''):
+def create_wsgi_app(path_to_library=None, prefix='', virtual_library=None):
     'WSGI entry point'
     from calibre.library import db
     cherrypy.config.update({'environment': 'embedded'})
@@ -32,6 +32,7 @@ def create_wsgi_app(path_to_library=None, prefix=''):
     parser = option_parser()
     opts, args = parser.parse_args(['calibre-server'])
     opts.url_prefix = prefix
+    opts.restriction = virtual_library
     server = LibraryServer(db, opts, wsgi=True, show_tracebacks=True)
     return cherrypy.Application(server, script_name=None, config=server.config)
 
@@ -97,7 +98,6 @@ def daemonize(stdin='/dev/null', stdout='/dev/null', stderr='/dev/null'):
     os.dup2(se.fileno(), sys.stderr.fileno())
 
 
-
 def main(args=sys.argv):
     from calibre.library.database2 import LibraryDatabase2
     parser = option_parser()