SoC/Ideas

Revision as of 16:33, 22 March 2009 by Kai (talk | contribs) (Google Summer of Code: Suggested Project ideas: Send people to samba-technical@)

Google Summer of Code: Suggested Project ideas

The following are the Samba project ideas for Summer of Code. Of course you are free to come up with ideas not listed here. Please discuss the your planned project by either joining us on irc://irc.freenode.net/#samba-technical or by sending email to samba-technical@samba.org

Most of our projects will require C programming skills, but the Samba4 section has a couple of Python projects.

Samba 3

Add remote (RPC) support for Samba configuration

Since recently, Samba has a registry based configuration backend: Configuration data is stored inside the registry key HKEY_LOCAL_MACHINE\Software\Samba\smbconf. Access to this configuration is available through a module that makes use of the "reg_api" interface which is similar to the winreg API. This project would at first develop a common api for registry access local through reg_api and remote through the winreg rpc client code. This new module could be abstraced from the code of the utility "net rpc registry". With this new module, the registry configuration code could be enhanced to allow for remote configuration.

  • Difficulty: Medium
  • Language(s): C
  • Possible Mentors: Michael Adam

Backport EndPointMapper and support for ncacn_ip_tcp

Current Samba 3.0 releases only support MS-RPC over SMB named pipes. The SAMBA_4_0 code base has support RPC directory over TCP which could be back ported in some degree to the SAMBA_3_0 tree. A pre-requisite task may be to backport the events framework first

Samba 4

GQ replacement using GTK and LDB

GQ is a widely used LDAP query tool. Many LDAP administrators would benefit if a similar tool were constructed, in particular with similar schema knowledge. There is a LDB-based clone of it in Samba-Gtk. We would like to see this tool extended and e.g. having support for adding and editing entries.

Extension of the GTK+ frontends

There are a couple of GTK+ frontends for Samba4 (see SambaGtk). These are very limited at the moment but you could work on expanding them and further integrating them with GNOME. Language: C or Python

  • Difficulty: Easy
  • Language(s): Python, perhaps C
  • Possible mentors: JelmerVernooij

SWAT implementation in Python

SWAT, the Samba Web Administration Tool is basically nonexistant in Samba4 at the moment. We would like to see it implemented in Python for Samba 4, with a focus on usability.

  • Difficulty: Easy
  • Language(s): Python, JavaScript (Ajax)
  • Possible mentors: JelmerVernooij

Windows Search Protocol WSP client library and torture tests

The Windows Search Protocol WSP is used to implement remote full filesystem indexing (indexed search) between windows machines. We would like to support this functionality in Samba, interfacing with existing indexing tools on Unix systems (such as beagle).

This is a new protocol based on SMB named pipes \pipe\ci_skads or \pipe\MSFTEWDS. See http://msdn2.microsoft.com/en-us/library/cc216195.aspx.

The student should write a (un)marshalling library to push and pull PDUs and an async client library on top of the samba4 raw smb client library.

The student should write sub tests for smbtorture which should demostrate how the protocol works against a windows server.

The student doesn't have to implement the samba4 server code.

  • Difficulty: Medium
  • Language(s): C, (Python?)
  • Possible Mentors: Tridge

CIFS POSIX extensions in Samba4

Samba4 does not implement the CIFS POSIX extensions at this stage.

A testsuite needs to be written, to prove consistent behavior, and the Samba3 compatible server implemented.

  • Difficulty: Medium
  • Language(s): C
  • Possible mentors: Tridge?

Re-implement smbclient in python

Samba4 now has an embedded python interpreter, which is used for both web configuration and for command line tools. The interpreter has access to the extensive internal C library of Samba. We would like smbclient to be rewritten in python, making it much more easily extendable by administrators.

  • Difficulty: Medium
  • Language(s): Python, C
  • Possible mentors: JelmerVernooij

Browsing support in Samba 4

Samba 4 still needs support for mailslots in general and in particular for the BROWSE mailslot. Should come with tests. Documentation of the BRWOSER protocol is available here: http://msdn.microsoft.com/en-us/library/cc201609(PROT.10).aspx http://ubiqx.org/cifs/Browsing.html

  • Difficulty: Hard
  • Language(s): C
  • Possible mentors: JelmerVernooij, Stefan Metzmacher

Miscellaneous

Linux Kernel CIFS client improvements

Interested students should contact Steve French and discuss possible improvements to the Linux Kernel CIFS VFS client. Here are some ideas to get you started:

  • improved async/vectored i/o support (improves performance)
  • Create a GUI for creating and managing Linux cifs mounts, and more easily configuring the many complex cifs mount options
  • Create GUI for displaying /proc/fs/cifs statistics and and mount/session status
  • Create a common uid mapping mechanism for Linux nfs and cifs vfs clients, that can be configured to remap, on a particular mount on the client, the uids returned by the server to uids which would be valid on the client (or to a default if such uid does not exist). This is helpful when the server even if it supports the CIFS Unix Extensions has different uids and gids than the client
  • Finish the Linux cifs vfs change notification support by completing the D_NOTIFY fcntl mapping to the FindNotify mechanism supported by the CIFS protocol
  • prototype SMB2 client
  • integration of cifs client with Dave Howell's fscache/cachefs (for offline caching of files on the client and to allow disconnected operation)
  • cifs->Samba automated test facility (build verification) similar to what we can now do with the Samba server and tools in the Samba build farm
  • Support for alternate transport protocols (other than TCP sockets)
  • Support for features (such as directory delegations) which NFS version 4.1 has but which current CIFS even with the most current CIFS->Samba protocol extensions (CIFS Unix Extensions) do not have.
  • Support for retrieving snapshots, encrypted files, or compressed files from Windows via the CIFS VFS


  • Difficulty: Varies
  • Language(s): C
  • Possible mentors: Steve French