Initial commit

14 files changed, 1787 insertions, 0 deletions

diff --git a/AUTHORS b/AUTHORS
new file mode 100644
index 0000000..f04ce70
--- /dev/null
+++ b/AUTHORS
@@ -0,0 +1,10 @@
+Authors
+=======
+
+Contributors
+------------
+Aleksey Lim <alsroot@sugarlabs.org>
+
+Maintainers
+-----------
+Aleksey Lim <alsroot@sugarlabs.org>
diff --git a/COPYING b/COPYING
new file mode 100644
index 0000000..94a9ed0
--- /dev/null
+++ b/COPYING
@@ -0,0 +1,674 @@
+                    GNU GENERAL PUBLIC LICENSE
+                       Version 3, 29 June 2007
+
+ Copyright (C) 2007 Free Software Foundation, Inc. <http://fsf.org/>
+ Everyone is permitted to copy and distribute verbatim copies
+ of this license document, but changing it is not allowed.
+
+                            Preamble
+
+  The GNU General Public License is a free, copyleft license for
+software and other kinds of works.
+
+  The licenses for most software and other practical works are designed
+to take away your freedom to share and change the works.  By contrast,
+the GNU General Public License is intended to guarantee your freedom to
+share and change all versions of a program--to make sure it remains free
+software for all its users.  We, the Free Software Foundation, use the
+GNU General Public License for most of our software; it applies also to
+any other work released this way by its authors.  You can apply it to
+your programs, too.
+
+  When we speak of free software, we are referring to freedom, not
+price.  Our General Public Licenses are designed to make sure that you
+have the freedom to distribute copies of free software (and charge for
+them if you wish), that you receive source code or can get it if you
+want it, that you can change the software or use pieces of it in new
+free programs, and that you know you can do these things.
+
+  To protect your rights, we need to prevent others from denying you
+these rights or asking you to surrender the rights.  Therefore, you have
+certain responsibilities if you distribute copies of the software, or if
+you modify it: responsibilities to respect the freedom of others.
+
+  For example, if you distribute copies of such a program, whether
+gratis or for a fee, you must pass on to the recipients the same
+freedoms that you received.  You must make sure that they, too, receive
+or can get the source code.  And you must show them these terms so they
+know their rights.
+
+  Developers that use the GNU GPL protect your rights with two steps:
+(1) assert copyright on the software, and (2) offer you this License
+giving you legal permission to copy, distribute and/or modify it.
+
+  For the developers' and authors' protection, the GPL clearly explains
+that there is no warranty for this free software.  For both users' and
+authors' sake, the GPL requires that modified versions be marked as
+changed, so that their problems will not be attributed erroneously to
+authors of previous versions.
+
+  Some devices are designed to deny users access to install or run
+modified versions of the software inside them, although the manufacturer
+can do so.  This is fundamentally incompatible with the aim of
+protecting users' freedom to change the software.  The systematic
+pattern of such abuse occurs in the area of products for individuals to
+use, which is precisely where it is most unacceptable.  Therefore, we
+have designed this version of the GPL to prohibit the practice for those
+products.  If such problems arise substantially in other domains, we
+stand ready to extend this provision to those domains in future versions
+of the GPL, as needed to protect the freedom of users.
+
+  Finally, every program is threatened constantly by software patents.
+States should not allow patents to restrict development and use of
+software on general-purpose computers, but in those that do, we wish to
+avoid the special danger that patents applied to a free program could
+make it effectively proprietary.  To prevent this, the GPL assures that
+patents cannot be used to render the program non-free.
+
+  The precise terms and conditions for copying, distribution and
+modification follow.
+
+                       TERMS AND CONDITIONS
+
+  0. Definitions.
+
+  "This License" refers to version 3 of the GNU General Public License.
+
+  "Copyright" also means copyright-like laws that apply to other kinds of
+works, such as semiconductor masks.
+
+  "The Program" refers to any copyrightable work licensed under this
+License.  Each licensee is addressed as "you".  "Licensees" and
+"recipients" may be individuals or organizations.
+
+  To "modify" a work means to copy from or adapt all or part of the work
+in a fashion requiring copyright permission, other than the making of an
+exact copy.  The resulting work is called a "modified version" of the
+earlier work or a work "based on" the earlier work.
+
+  A "covered work" means either the unmodified Program or a work based
+on the Program.
+
+  To "propagate" a work means to do anything with it that, without
+permission, would make you directly or secondarily liable for
+infringement under applicable copyright law, except executing it on a
+computer or modifying a private copy.  Propagation includes copying,
+distribution (with or without modification), making available to the
+public, and in some countries other activities as well.
+
+  To "convey" a work means any kind of propagation that enables other
+parties to make or receive copies.  Mere interaction with a user through
+a computer network, with no transfer of a copy, is not conveying.
+
+  An interactive user interface displays "Appropriate Legal Notices"
+to the extent that it includes a convenient and prominently visible
+feature that (1) displays an appropriate copyright notice, and (2)
+tells the user that there is no warranty for the work (except to the
+extent that warranties are provided), that licensees may convey the
+work under this License, and how to view a copy of this License.  If
+the interface presents a list of user commands or options, such as a
+menu, a prominent item in the list meets this criterion.
+
+  1. Source Code.
+
+  The "source code" for a work means the preferred form of the work
+for making modifications to it.  "Object code" means any non-source
+form of a work.
+
+  A "Standard Interface" means an interface that either is an official
+standard defined by a recognized standards body, or, in the case of
+interfaces specified for a particular programming language, one that
+is widely used among developers working in that language.
+
+  The "System Libraries" of an executable work include anything, other
+than the work as a whole, that (a) is included in the normal form of
+packaging a Major Component, but which is not part of that Major
+Component, and (b) serves only to enable use of the work with that
+Major Component, or to implement a Standard Interface for which an
+implementation is available to the public in source code form.  A
+"Major Component", in this context, means a major essential component
+(kernel, window system, and so on) of the specific operating system
+(if any) on which the executable work runs, or a compiler used to
+produce the work, or an object code interpreter used to run it.
+
+  The "Corresponding Source" for a work in object code form means all
+the source code needed to generate, install, and (for an executable
+work) run the object code and to modify the work, including scripts to
+control those activities.  However, it does not include the work's
+System Libraries, or general-purpose tools or generally available free
+programs which are used unmodified in performing those activities but
+which are not part of the work.  For example, Corresponding Source
+includes interface definition files associated with source files for
+the work, and the source code for shared libraries and dynamically
+linked subprograms that the work is specifically designed to require,
+such as by intimate data communication or control flow between those
+subprograms and other parts of the work.
+
+  The Corresponding Source need not include anything that users
+can regenerate automatically from other parts of the Corresponding
+Source.
+
+  The Corresponding Source for a work in source code form is that
+same work.
+
+  2. Basic Permissions.
+
+  All rights granted under this License are granted for the term of
+copyright on the Program, and are irrevocable provided the stated
+conditions are met.  This License explicitly affirms your unlimited
+permission to run the unmodified Program.  The output from running a
+covered work is covered by this License only if the output, given its
+content, constitutes a covered work.  This License acknowledges your
+rights of fair use or other equivalent, as provided by copyright law.
+
+  You may make, run and propagate covered works that you do not
+convey, without conditions so long as your license otherwise remains
+in force.  You may convey covered works to others for the sole purpose
+of having them make modifications exclusively for you, or provide you
+with facilities for running those works, provided that you comply with
+the terms of this License in conveying all material for which you do
+not control copyright.  Those thus making or running the covered works
+for you must do so exclusively on your behalf, under your direction
+and control, on terms that prohibit them from making any copies of
+your copyrighted material outside their relationship with you.
+
+  Conveying under any other circumstances is permitted solely under
+the conditions stated below.  Sublicensing is not allowed; section 10
+makes it unnecessary.
+
+  3. Protecting Users' Legal Rights From Anti-Circumvention Law.
+
+  No covered work shall be deemed part of an effective technological
+measure under any applicable law fulfilling obligations under article
+11 of the WIPO copyright treaty adopted on 20 December 1996, or
+similar laws prohibiting or restricting circumvention of such
+measures.
+
+  When you convey a covered work, you waive any legal power to forbid
+circumvention of technological measures to the extent such circumvention
+is effected by exercising rights under this License with respect to
+the covered work, and you disclaim any intention to limit operation or
+modification of the work as a means of enforcing, against the work's
+users, your or third parties' legal rights to forbid circumvention of
+technological measures.
+
+  4. Conveying Verbatim Copies.
+
+  You may convey verbatim copies of the Program's source code as you
+receive it, in any medium, provided that you conspicuously and
+appropriately publish on each copy an appropriate copyright notice;
+keep intact all notices stating that this License and any
+non-permissive terms added in accord with section 7 apply to the code;
+keep intact all notices of the absence of any warranty; and give all
+recipients a copy of this License along with the Program.
+
+  You may charge any price or no price for each copy that you convey,
+and you may offer support or warranty protection for a fee.
+
+  5. Conveying Modified Source Versions.
+
+  You may convey a work based on the Program, or the modifications to
+produce it from the Program, in the form of source code under the
+terms of section 4, provided that you also meet all of these conditions:
+
+    a) The work must carry prominent notices stating that you modified
+    it, and giving a relevant date.
+
+    b) The work must carry prominent notices stating that it is
+    released under this License and any conditions added under section
+    7.  This requirement modifies the requirement in section 4 to
+    "keep intact all notices".
+
+    c) You must license the entire work, as a whole, under this
+    License to anyone who comes into possession of a copy.  This
+    License will therefore apply, along with any applicable section 7
+    additional terms, to the whole of the work, and all its parts,
+    regardless of how they are packaged.  This License gives no
+    permission to license the work in any other way, but it does not
+    invalidate such permission if you have separately received it.
+
+    d) If the work has interactive user interfaces, each must display
+    Appropriate Legal Notices; however, if the Program has interactive
+    interfaces that do not display Appropriate Legal Notices, your
+    work need not make them do so.
+
+  A compilation of a covered work with other separate and independent
+works, which are not by their nature extensions of the covered work,
+and which are not combined with it such as to form a larger program,
+in or on a volume of a storage or distribution medium, is called an
+"aggregate" if the compilation and its resulting copyright are not
+used to limit the access or legal rights of the compilation's users
+beyond what the individual works permit.  Inclusion of a covered work
+in an aggregate does not cause this License to apply to the other
+parts of the aggregate.
+
+  6. Conveying Non-Source Forms.
+
+  You may convey a covered work in object code form under the terms
+of sections 4 and 5, provided that you also convey the
+machine-readable Corresponding Source under the terms of this License,
+in one of these ways:
+
+    a) Convey the object code in, or embodied in, a physical product
+    (including a physical distribution medium), accompanied by the
+    Corresponding Source fixed on a durable physical medium
+    customarily used for software interchange.
+
+    b) Convey the object code in, or embodied in, a physical product
+    (including a physical distribution medium), accompanied by a
+    written offer, valid for at least three years and valid for as
+    long as you offer spare parts or customer support for that product
+    model, to give anyone who possesses the object code either (1) a
+    copy of the Corresponding Source for all the software in the
+    product that is covered by this License, on a durable physical
+    medium customarily used for software interchange, for a price no
+    more than your reasonable cost of physically performing this
+    conveying of source, or (2) access to copy the
+    Corresponding Source from a network server at no charge.
+
+    c) Convey individual copies of the object code with a copy of the
+    written offer to provide the Corresponding Source.  This
+    alternative is allowed only occasionally and noncommercially, and
+    only if you received the object code with such an offer, in accord
+    with subsection 6b.
+
+    d) Convey the object code by offering access from a designated
+    place (gratis or for a charge), and offer equivalent access to the
+    Corresponding Source in the same way through the same place at no
+    further charge.  You need not require recipients to copy the
+    Corresponding Source along with the object code.  If the place to
+    copy the object code is a network server, the Corresponding Source
+    may be on a different server (operated by you or a third party)
+    that supports equivalent copying facilities, provided you maintain
+    clear directions next to the object code saying where to find the
+    Corresponding Source.  Regardless of what server hosts the
+    Corresponding Source, you remain obligated to ensure that it is
+    available for as long as needed to satisfy these requirements.
+
+    e) Convey the object code using peer-to-peer transmission, provided
+    you inform other peers where the object code and Corresponding
+    Source of the work are being offered to the general public at no
+    charge under subsection 6d.
+
+  A separable portion of the object code, whose source code is excluded
+from the Corresponding Source as a System Library, need not be
+included in conveying the object code work.
+
+  A "User Product" is either (1) a "consumer product", which means any
+tangible personal property which is normally used for personal, family,
+or household purposes, or (2) anything designed or sold for incorporation
+into a dwelling.  In determining whether a product is a consumer product,
+doubtful cases shall be resolved in favor of coverage.  For a particular
+product received by a particular user, "normally used" refers to a
+typical or common use of that class of product, regardless of the status
+of the particular user or of the way in which the particular user
+actually uses, or expects or is expected to use, the product.  A product
+is a consumer product regardless of whether the product has substantial
+commercial, industrial or non-consumer uses, unless such uses represent
+the only significant mode of use of the product.
+
+  "Installation Information" for a User Product means any methods,
+procedures, authorization keys, or other information required to install
+and execute modified versions of a covered work in that User Product from
+a modified version of its Corresponding Source.  The information must
+suffice to ensure that the continued functioning of the modified object
+code is in no case prevented or interfered with solely because
+modification has been made.
+
+  If you convey an object code work under this section in, or with, or
+specifically for use in, a User Product, and the conveying occurs as
+part of a transaction in which the right of possession and use of the
+User Product is transferred to the recipient in perpetuity or for a
+fixed term (regardless of how the transaction is characterized), the
+Corresponding Source conveyed under this section must be accompanied
+by the Installation Information.  But this requirement does not apply
+if neither you nor any third party retains the ability to install
+modified object code on the User Product (for example, the work has
+been installed in ROM).
+
+  The requirement to provide Installation Information does not include a
+requirement to continue to provide support service, warranty, or updates
+for a work that has been modified or installed by the recipient, or for
+the User Product in which it has been modified or installed.  Access to a
+network may be denied when the modification itself materially and
+adversely affects the operation of the network or violates the rules and
+protocols for communication across the network.
+
+  Corresponding Source conveyed, and Installation Information provided,
+in accord with this section must be in a format that is publicly
+documented (and with an implementation available to the public in
+source code form), and must require no special password or key for
+unpacking, reading or copying.
+
+  7. Additional Terms.
+
+  "Additional permissions" are terms that supplement the terms of this
+License by making exceptions from one or more of its conditions.
+Additional permissions that are applicable to the entire Program shall
+be treated as though they were included in this License, to the extent
+that they are valid under applicable law.  If additional permissions
+apply only to part of the Program, that part may be used separately
+under those permissions, but the entire Program remains governed by
+this License without regard to the additional permissions.
+
+  When you convey a copy of a covered work, you may at your option
+remove any additional permissions from that copy, or from any part of
+it.  (Additional permissions may be written to require their own
+removal in certain cases when you modify the work.)  You may place
+additional permissions on material, added by you to a covered work,
+for which you have or can give appropriate copyright permission.
+
+  Notwithstanding any other provision of this License, for material you
+add to a covered work, you may (if authorized by the copyright holders of
+that material) supplement the terms of this License with terms:
+
+    a) Disclaiming warranty or limiting liability differently from the
+    terms of sections 15 and 16 of this License; or
+
+    b) Requiring preservation of specified reasonable legal notices or
+    author attributions in that material or in the Appropriate Legal
+    Notices displayed by works containing it; or
+
+    c) Prohibiting misrepresentation of the origin of that material, or
+    requiring that modified versions of such material be marked in
+    reasonable ways as different from the original version; or
+
+    d) Limiting the use for publicity purposes of names of licensors or
+    authors of the material; or
+
+    e) Declining to grant rights under trademark law for use of some
+    trade names, trademarks, or service marks; or
+
+    f) Requiring indemnification of licensors and authors of that
+    material by anyone who conveys the material (or modified versions of
+    it) with contractual assumptions of liability to the recipient, for
+    any liability that these contractual assumptions directly impose on
+    those licensors and authors.
+
+  All other non-permissive additional terms are considered "further
+restrictions" within the meaning of section 10.  If the Program as you
+received it, or any part of it, contains a notice stating that it is
+governed by this License along with a term that is a further
+restriction, you may remove that term.  If a license document contains
+a further restriction but permits relicensing or conveying under this
+License, you may add to a covered work material governed by the terms
+of that license document, provided that the further restriction does
+not survive such relicensing or conveying.
+
+  If you add terms to a covered work in accord with this section, you
+must place, in the relevant source files, a statement of the
+additional terms that apply to those files, or a notice indicating
+where to find the applicable terms.
+
+  Additional terms, permissive or non-permissive, may be stated in the
+form of a separately written license, or stated as exceptions;
+the above requirements apply either way.
+
+  8. Termination.
+
+  You may not propagate or modify a covered work except as expressly
+provided under this License.  Any attempt otherwise to propagate or
+modify it is void, and will automatically terminate your rights under
+this License (including any patent licenses granted under the third
+paragraph of section 11).
+
+  However, if you cease all violation of this License, then your
+license from a particular copyright holder is reinstated (a)
+provisionally, unless and until the copyright holder explicitly and
+finally terminates your license, and (b) permanently, if the copyright
+holder fails to notify you of the violation by some reasonable means
+prior to 60 days after the cessation.
+
+  Moreover, your license from a particular copyright holder is
+reinstated permanently if the copyright holder notifies you of the
+violation by some reasonable means, this is the first time you have
+received notice of violation of this License (for any work) from that
+copyright holder, and you cure the violation prior to 30 days after
+your receipt of the notice.
+
+  Termination of your rights under this section does not terminate the
+licenses of parties who have received copies or rights from you under
+this License.  If your rights have been terminated and not permanently
+reinstated, you do not qualify to receive new licenses for the same
+material under section 10.
+
+  9. Acceptance Not Required for Having Copies.
+
+  You are not required to accept this License in order to receive or
+run a copy of the Program.  Ancillary propagation of a covered work
+occurring solely as a consequence of using peer-to-peer transmission
+to receive a copy likewise does not require acceptance.  However,
+nothing other than this License grants you permission to propagate or
+modify any covered work.  These actions infringe copyright if you do
+not accept this License.  Therefore, by modifying or propagating a
+covered work, you indicate your acceptance of this License to do so.
+
+  10. Automatic Licensing of Downstream Recipients.
+
+  Each time you convey a covered work, the recipient automatically
+receives a license from the original licensors, to run, modify and
+propagate that work, subject to this License.  You are not responsible
+for enforcing compliance by third parties with this License.
+
+  An "entity transaction" is a transaction transferring control of an
+organization, or substantially all assets of one, or subdividing an
+organization, or merging organizations.  If propagation of a covered
+work results from an entity transaction, each party to that
+transaction who receives a copy of the work also receives whatever
+licenses to the work the party's predecessor in interest had or could
+give under the previous paragraph, plus a right to possession of the
+Corresponding Source of the work from the predecessor in interest, if
+the predecessor has it or can get it with reasonable efforts.
+
+  You may not impose any further restrictions on the exercise of the
+rights granted or affirmed under this License.  For example, you may
+not impose a license fee, royalty, or other charge for exercise of
+rights granted under this License, and you may not initiate litigation
+(including a cross-claim or counterclaim in a lawsuit) alleging that
+any patent claim is infringed by making, using, selling, offering for
+sale, or importing the Program or any portion of it.
+
+  11. Patents.
+
+  A "contributor" is a copyright holder who authorizes use under this
+License of the Program or a work on which the Program is based.  The
+work thus licensed is called the contributor's "contributor version".
+
+  A contributor's "essential patent claims" are all patent claims
+owned or controlled by the contributor, whether already acquired or
+hereafter acquired, that would be infringed by some manner, permitted
+by this License, of making, using, or selling its contributor version,
+but do not include claims that would be infringed only as a
+consequence of further modification of the contributor version.  For
+purposes of this definition, "control" includes the right to grant
+patent sublicenses in a manner consistent with the requirements of
+this License.
+
+  Each contributor grants you a non-exclusive, worldwide, royalty-free
+patent license under the contributor's essential patent claims, to
+make, use, sell, offer for sale, import and otherwise run, modify and
+propagate the contents of its contributor version.
+
+  In the following three paragraphs, a "patent license" is any express
+agreement or commitment, however denominated, not to enforce a patent
+(such as an express permission to practice a patent or covenant not to
+sue for patent infringement).  To "grant" such a patent license to a
+party means to make such an agreement or commitment not to enforce a
+patent against the party.
+
+  If you convey a covered work, knowingly relying on a patent license,
+and the Corresponding Source of the work is not available for anyone
+to copy, free of charge and under the terms of this License, through a
+publicly available network server or other readily accessible means,
+then you must either (1) cause the Corresponding Source to be so
+available, or (2) arrange to deprive yourself of the benefit of the
+patent license for this particular work, or (3) arrange, in a manner
+consistent with the requirements of this License, to extend the patent
+license to downstream recipients.  "Knowingly relying" means you have
+actual knowledge that, but for the patent license, your conveying the
+covered work in a country, or your recipient's use of the covered work
+in a country, would infringe one or more identifiable patents in that
+country that you have reason to believe are valid.
+
+  If, pursuant to or in connection with a single transaction or
+arrangement, you convey, or propagate by procuring conveyance of, a
+covered work, and grant a patent license to some of the parties
+receiving the covered work authorizing them to use, propagate, modify
+or convey a specific copy of the covered work, then the patent license
+you grant is automatically extended to all recipients of the covered
+work and works based on it.
+
+  A patent license is "discriminatory" if it does not include within
+the scope of its coverage, prohibits the exercise of, or is
+conditioned on the non-exercise of one or more of the rights that are
+specifically granted under this License.  You may not convey a covered
+work if you are a party to an arrangement with a third party that is
+in the business of distributing software, under which you make payment
+to the third party based on the extent of your activity of conveying
+the work, and under which the third party grants, to any of the
+parties who would receive the covered work from you, a discriminatory
+patent license (a) in connection with copies of the covered work
+conveyed by you (or copies made from those copies), or (b) primarily
+for and in connection with specific products or compilations that
+contain the covered work, unless you entered into that arrangement,
+or that patent license was granted, prior to 28 March 2007.
+
+  Nothing in this License shall be construed as excluding or limiting
+any implied license or other defenses to infringement that may
+otherwise be available to you under applicable patent law.
+
+  12. No Surrender of Others' Freedom.
+
+  If conditions are imposed on you (whether by court order, agreement or
+otherwise) that contradict the conditions of this License, they do not
+excuse you from the conditions of this License.  If you cannot convey a
+covered work so as to satisfy simultaneously your obligations under this
+License and any other pertinent obligations, then as a consequence you may
+not convey it at all.  For example, if you agree to terms that obligate you
+to collect a royalty for further conveying from those to whom you convey
+the Program, the only way you could satisfy both those terms and this
+License would be to refrain entirely from conveying the Program.
+
+  13. Use with the GNU Affero General Public License.
+
+  Notwithstanding any other provision of this License, you have
+permission to link or combine any covered work with a work licensed
+under version 3 of the GNU Affero General Public License into a single
+combined work, and to convey the resulting work.  The terms of this
+License will continue to apply to the part which is the covered work,
+but the special requirements of the GNU Affero General Public License,
+section 13, concerning interaction through a network will apply to the
+combination as such.
+
+  14. Revised Versions of this License.
+
+  The Free Software Foundation may publish revised and/or new versions of
+the GNU General Public License from time to time.  Such new versions will
+be similar in spirit to the present version, but may differ in detail to
+address new problems or concerns.
+
+  Each version is given a distinguishing version number.  If the
+Program specifies that a certain numbered version of the GNU General
+Public License "or any later version" applies to it, you have the
+option of following the terms and conditions either of that numbered
+version or of any later version published by the Free Software
+Foundation.  If the Program does not specify a version number of the
+GNU General Public License, you may choose any version ever published
+by the Free Software Foundation.
+
+  If the Program specifies that a proxy can decide which future
+versions of the GNU General Public License can be used, that proxy's
+public statement of acceptance of a version permanently authorizes you
+to choose that version for the Program.
+
+  Later license versions may give you additional or different
+permissions.  However, no additional obligations are imposed on any
+author or copyright holder as a result of your choosing to follow a
+later version.
+
+  15. Disclaimer of Warranty.
+
+  THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY
+APPLICABLE LAW.  EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT
+HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY
+OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO,
+THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+PURPOSE.  THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM
+IS WITH YOU.  SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF
+ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
+
+  16. Limitation of Liability.
+
+  IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
+WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS
+THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY
+GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE
+USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF
+DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD
+PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS),
+EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF
+SUCH DAMAGES.
+
+  17. Interpretation of Sections 15 and 16.
+
+  If the disclaimer of warranty and limitation of liability provided
+above cannot be given local legal effect according to their terms,
+reviewing courts shall apply local law that most closely approximates
+an absolute waiver of all civil liability in connection with the
+Program, unless a warranty or assumption of liability accompanies a
+copy of the Program in return for a fee.
+
+                     END OF TERMS AND CONDITIONS
+
+            How to Apply These Terms to Your New Programs
+
+  If you develop a new program, and you want it to be of the greatest
+possible use to the public, the best way to achieve this is to make it
+free software which everyone can redistribute and change under these terms.
+
+  To do so, attach the following notices to the program.  It is safest
+to attach them to the start of each source file to most effectively
+state the exclusion of warranty; and each file should have at least
+the "copyright" line and a pointer to where the full notice is found.
+
+    <one line to give the program's name and a brief idea of what it does.>
+    Copyright (C) <year>  <name of author>
+
+    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 3 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, see <http://www.gnu.org/licenses/>.
+
+Also add information on how to contact you by electronic and paper mail.
+
+  If the program does terminal interaction, make it output a short
+notice like this when it starts in an interactive mode:
+
+    <program>  Copyright (C) <year>  <name of author>
+    This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
+    This is free software, and you are welcome to redistribute it
+    under certain conditions; type `show c' for details.
+
+The hypothetical commands `show w' and `show c' should show the appropriate
+parts of the General Public License.  Of course, your program's commands
+might be different; for a GUI interface, you would use an "about box".
+
+  You should also get your employer (if you work as a programmer) or school,
+if any, to sign a "copyright disclaimer" for the program, if necessary.
+For more information on this, and how to apply and follow the GNU GPL, see
+<http://www.gnu.org/licenses/>.
+
+  The GNU General Public License does not permit incorporating your program
+into proprietary programs.  If your program is a subroutine library, you
+may consider it more useful to permit linking proprietary applications with
+the library.  If this is what you want to do, use the GNU Lesser General
+Public License instead of this License.  But first, please read
+<http://www.gnu.org/philosophy/why-not-lgpl.html>.
diff --git a/HACKING b/HACKING
new file mode 100644
index 0000000..cab54f8
--- /dev/null
+++ b/HACKING
@@ -0,0 +1,29 @@
+How to contribute
+=================
+
+Useful notes how to contribute to the project.
+
+Before committing
+-----------------
+All source files need to be passed through `sugar-lint`_ command.
+Follow sugar-lint home page instructions and especially
+`"Lint files before committing"` section.
+
+Send patches
+------------
+Create your patches using ``git format`` command and send them to all
+maintainers from the :doc:`AUTHORS <AUTHORS>` file with CCing to
+sugar-network@googlegroups.com. The easiest way is using ``git send-email``
+command.
+
+Gitorious forks
+---------------
+Another useful way to contribute, especially for big improvements, is creating
+Gitorious forks and request them for merge to the trunk.
+
+* http://blog.gitorious.org/2009/05/09/weve-made-a-few-changes/
+  (see `"Merge requests"` topic)
+* http://blog.gitorious.org/2009/07/15/new-merge-request-functionality/
+* http://blog.gitorious.org/2009/11/06/awesome-code-review/
+
+.. _sugar-lint: http://wiki.sugarlabs.org/go/Platform_Team/Sugar_Lint
diff --git a/README b/README
new file mode 100644
index 0000000..367949e
--- /dev/null
+++ b/README
@@ -0,0 +1,13 @@
+Introduction
+============
+
+Plugin for Sugar Shell to add Sugar Network UI.
+
+Sources
+=======
+
+Clone source repository from `Gitorious`_ project:
+
+    ``git clone git://git.sugarlabs.org/network/shell-plugin.git``
+
+.. _Gitorious: http://git.sugarlabs.org/network
diff --git a/cpsection/__init__.py b/cpsection/__init__.py
new file mode 100644
index 0000000..7203fc9
--- /dev/null
+++ b/cpsection/__init__.py
@@ -0,0 +1,21 @@
+# Copyright (C) 2012 Aleksey Lim
+#
+# 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 3 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, see <http://www.gnu.org/licenses/>.
+
+from gettext import gettext as _
+
+
+CLASS = 'Sweets'
+ICON = 'sweets'
+TITLE = _('Sweets Distribution')
diff --git a/cpsection/model.py b/cpsection/model.py
new file mode 100644
index 0000000..ee29047
--- /dev/null
+++ b/cpsection/model.py
@@ -0,0 +1,14 @@
+# Copyright (C) 2012 Aleksey Lim
+#
+# 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 3 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, see <http://www.gnu.org/licenses/>.
diff --git a/cpsection/view.py b/cpsection/view.py
new file mode 100644
index 0000000..4543caf
--- /dev/null
+++ b/cpsection/view.py
@@ -0,0 +1,165 @@
+# Copyright (C) 2012 Aleksey Lim
+#
+# 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 3 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, see <http://www.gnu.org/licenses/>.
+
+import os
+from os.path import exists, expanduser
+from gettext import gettext as _
+
+import gtk
+
+from sugar_network import api_url, server_mode
+from active_toolkit.options import Option
+from sugar.graphics import style
+
+from jarabe.controlpanel.sectionview import SectionView
+from jarabe.plugins.sn import sugar_network, SN_MASER_URL
+
+
+# Only for XO laptops
+_XSESSION_PATH = expanduser('~/.xsession')
+_XSESSION_FILE = """\
+exec sweets-sugar
+"""
+
+
+class Sweets(SectionView):
+
+    def __init__(self, model, alerts):
+        SectionView.__init__(self)
+
+        self.set_border_width(style.DEFAULT_SPACING * 2)
+        self.set_spacing(style.DEFAULT_SPACING)
+
+        def section_new(title, container, spacing=style.DEFAULT_SPACING):
+            self.pack_start(gtk.HSeparator(), expand=False)
+            label = gtk.Label(title)
+            label.set_alignment(0, 0)
+            self.pack_start(label, expand=False)
+            box = container()
+            box.props.border_width = style.DEFAULT_SPACING
+            box.props.spacing = spacing
+            self.pack_start(box, expand=False)
+            return box
+
+        section = section_new(_('Sweets Distribution features'), gtk.VBox, 0)
+
+        self._xsession = gtk.CheckButton()
+        self._xsession.props.label = \
+                _('Sweets Desktop is default Sugar session')
+        self._xsession.connect('toggled',
+                lambda button: _set_xsession(button.props.active))
+        if _is_xo():
+            section.pack_start(self._xsession, expand=False)
+        self._sn_browser = gtk.CheckButton()
+        self._sn_browser.props.label = _('Sugar Network interface')
+        self._sn_browser.connect('toggled', self.__sn_browser_toggled_cb)
+        section.pack_start(self._sn_browser, expand=False)
+
+        section = section_new(_('Sugar Network'), gtk.VBox)
+
+        server_box = gtk.VBox()
+        section.pack_start(server_box)
+        self._master = gtk.RadioButton()
+        self._master.props.label = _('Connect to master server')
+        self._master.connect('toggled', self.__api_url_toggled_cb,
+                SN_MASER_URL)
+        server_box.pack_start(self._master, expand=False)
+        self._discover = gtk.RadioButton(self._master)
+        self._discover.props.label = _('Auto discover server in local network')
+        self._discover.connect('toggled', self.__api_url_toggled_cb, '')
+        server_box.pack_start(self._discover, expand=False)
+
+        self._sn_server = gtk.CheckButton()
+        self._sn_server.props.label = _('Server mode')
+        self._sn_server.connect('toggled', self.__sn_server_toggled_cb)
+        section.pack_start(self._sn_server, expand=False)
+
+        self.show_all()
+
+        self._orig_api_url = api_url.value
+        self._orig_sn_browser = sugar_network.value
+        self._orig_sn_server = server_mode.value
+        self._orig_xsession = _xsession_enabled()
+        self.setup()
+
+    def setup(self):
+        if api_url.value:
+            self._master.props.active = True
+        else:
+            self._discover.props.active = True
+        self._sn_browser.props.active = sugar_network.value
+        self._sn_server.props.active = server_mode.value
+        self._xsession.props.active = _xsession_enabled()
+
+    def undo(self):
+        api_url.value = self._orig_api_url
+        sugar_network.value = self._orig_sn_browser
+        server_mode.value = self._orig_sn_server
+        Option.save()
+
+        if self._orig_xsession != _xsession_enabled():
+            _set_xsession(self._orig_xsession)
+
+        self.setup()
+
+    # pylint: disable-msg=E0202,E1101,E0102
+
+    @property
+    def needs_restart(self):
+        Option.save()
+        return api_url.value != self._orig_api_url or \
+               self._sn_browser.props.active != self._orig_sn_browser or \
+               self._sn_server.props.active != self._orig_sn_server or \
+               self._xsession.props.active != self._orig_xsession
+
+    @needs_restart.setter
+    def needs_restart(self, value):
+        # needs_restart is fully calculated
+        pass
+
+    def __api_url_toggled_cb(self, button, url):
+        api_url.value = url
+        Option.save()
+
+    def __sn_browser_toggled_cb(self, button):
+        sugar_network.value = button.props.active
+        Option.save()
+
+    def __sn_server_toggled_cb(self, button):
+        server_mode.value = button.props.active
+        Option.save()
+
+        self._master.props.sensitive = not server_mode.value
+        self._discover.props.sensitive = not server_mode.value
+
+
+def _xsession_enabled():
+    if not exists(_XSESSION_PATH):
+        return False
+    with file(_XSESSION_PATH) as f:
+        return f.read() == _XSESSION_FILE
+
+
+def _set_xsession(enable):
+    if enable:
+        with file(_XSESSION_PATH, 'w') as f:
+            f.write(_XSESSION_FILE)
+    else:
+        if exists(_XSESSION_PATH):
+            os.unlink(_XSESSION_PATH)
+
+
+def _is_xo():
+    return exists('/ofw') and exists('/usr/bin/sugar')
diff --git a/globalkey/sn.py b/globalkey/sn.py
new file mode 100644
index 0000000..890a687
--- /dev/null
+++ b/globalkey/sn.py
@@ -0,0 +1,25 @@
+# Copyright (C) 2012, Aleksey Lim
+#
+# 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 3 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, see <http://www.gnu.org/licenses/>.
+
+from jarabe.plugins.sn import get_browser
+
+
+BOUND_KEYS = ['F8']
+
+
+def handle_key_press(key):
+    browser = get_browser()
+    if browser is not None:
+        browser.reveal()
diff --git a/plugin/__init__.py b/plugin/__init__.py
new file mode 100644
index 0000000..5fe5cf7
--- /dev/null
+++ b/plugin/__init__.py
@@ -0,0 +1,173 @@
+# Copyright (C) 2012 Aleksey Lim
+#
+# 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 3 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, see <http://www.gnu.org/licenses/>.
+
+import os
+import subprocess
+from gettext import gettext as _
+
+import gobject
+
+from sugar.graphics.alert import NotifyAlert, ErrorAlert
+from sugar_network import sugar, GlibClient, api_url, server_mode
+from active_toolkit.options import Option
+
+
+ORDER = 5
+
+SN_BROWSER_NAME = 'sugar-network-browser'
+
+SN_MASER_URL = 'http://api-testing.network.sugarlabs.org'
+
+sugar_network = Option(
+        'enable Sugar Network support in Sugar Shell',
+        default=False, type_cast=Option.bool_cast,
+        action='store_true', name='sugar-network')
+
+
+_ALERT_SEVERITIES = {
+        # severity: (alert_class, alert_message)
+        'error': (ErrorAlert, _('Sugar Network error')),
+        None: (NotifyAlert, _('Sugar Network')),
+        }
+
+_bundleregistry = None
+_launcher = None
+_client = None
+_browser = None
+
+Option.seek('sweets', [sugar_network])
+Option.seek('local', [api_url, server_mode])
+
+
+def init():
+    global _bundleregistry
+
+    if not sugar_network.value:
+        return
+
+    if api_url.value and api_url.value != SN_MASER_URL:
+        # For now, keep only global SN server to make testing more relibale
+        api_url.value = SN_MASER_URL
+        Option.save()
+
+    if not os.fork():
+        args = ['sugar-network-service', '--webui', '--delayed-start', 'start']
+        os.execvp(args[0], args)
+
+    import jarabe.model.bundleregistry
+    from .bundleregistry import BundleRegistry
+
+    _bundleregistry = BundleRegistry()
+    jarabe.model.bundleregistry.get_registry = lambda: _bundleregistry
+
+    from jarabe.model.shell import Activity
+    from jarabe.view import palettes
+    from .browser import Palette
+
+    Activity.get_bundle_path = _get_bundle_path
+    palettes.predefined[SN_BROWSER_NAME] = Palette
+
+
+def enable():
+    global _launcher, _client
+
+    if not sugar_network.value:
+        return
+
+    _client = GlibClient()
+    _client.connect('alert',
+            lambda sender, severity, message: add_alert(severity, msg=message))
+
+    _bundleregistry.populate()
+
+    from jarabe.journal import misc
+    from .launcher import Launcher
+
+    _launcher = Launcher()
+    misc.launch = _launcher.launch
+
+    from jarabe.model.shell import get_model
+    shell = get_model()
+
+    def delayed_start():
+        _client.publish('delayed-start')
+        get_browser()
+
+    def activity_added_cb(model, activity):
+        if activity.is_journal():
+            shell.disconnect_by_func(activity_added_cb)
+            gobject.idle_add(delayed_start)
+
+    shell.connect('activity-added', activity_added_cb)
+
+
+def disable():
+    pass
+
+
+def get_registry():
+    return _bundleregistry
+
+
+def get_client():
+    return _client
+
+
+def get_browser():
+    global _browser
+
+    if not sugar_network.value:
+        return
+
+    if _browser is None:
+        from .browser import Browser
+        _browser = Browser()
+
+    return _browser
+
+
+def add_alert(severity, callback=None, **kwargs):
+    if sugar_network.value:
+        window = get_browser()
+    else:
+        from jarabe.journal.journalactivity import get_journal
+        window = get_journal()
+
+    def response_cb(alert, response_id):
+        window.remove_alert(alert)
+        if callback is not None:
+            callback()
+        del alert
+
+    cls, title = _ALERT_SEVERITIES.get(severity) or _ALERT_SEVERITIES[None]
+    if 'title' not in kwargs:
+        kwargs['title'] = title
+    alert = cls(**kwargs)
+    alert.connect('response', response_cb)
+
+    window.add_alert(alert)
+    window.reveal()
+
+
+def _get_bundle_path(self):
+    # pylint: disable-msg=W0212
+    if not self._windows:
+        return None
+
+    pid = self._windows[0].get_pid()
+    with file('/proc/%d/environ' % pid) as f:
+        for env in f.read().split('\0'):
+            if env.startswith('SUGAR_BUNDLE_PATH='):
+                return env.split('=', 1)[-1]
diff --git a/plugin/browser.py b/plugin/browser.py
new file mode 100644
index 0000000..68a406c
--- /dev/null
+++ b/plugin/browser.py
@@ -0,0 +1,120 @@
+# Copyright (C) 2012 Aleksey Lim
+#
+# 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 3 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, see <http://www.gnu.org/licenses/>.
+
+import urllib
+import logging
+from gettext import gettext as _
+
+import gtk
+import glib
+import webkit
+import gobject
+
+from sugar_network import webui_port
+
+from sugar import wm
+from sugar.graphics.window import Window
+from sugar.activity.activityfactory import create_activity_id
+
+from jarabe.view.palettes import BasePalette
+from jarabe.plugins.sn import SN_BROWSER_NAME, get_client
+
+
+_WEBKIT_LOAD_PROVISIONAL = 0
+_WEBKIT_LOAD_FINISHED = 2
+_WEBKIT_LOAD_FIRST_VISUALLY_NON_EMPTY_LAYOUT = 3
+_WEBKIT_LOAD_FAILED = 4
+
+_RETRY_TIMEOUT = 1
+
+_logger = logging.getLogger('plugins.sn.browser')
+
+
+class Browser(Window):
+
+    def __init__(self):
+        Window.__init__(self)
+        self._initial_load = True
+        self._reveal = False
+
+        self.set_title(_('Sugar Network'))
+        self.connect('realize', self.__realize_cb)
+        self.iconify()
+
+        scrolled = gtk.ScrolledWindow()
+        scrolled.set_policy(gtk.POLICY_AUTOMATIC, gtk.POLICY_AUTOMATIC)
+        scrolled.set_shadow_type(gtk.SHADOW_NONE)
+        self.set_canvas(scrolled)
+
+        # pylint: disable-msg=E1101
+        self._webkit = webkit.WebView()
+        scrolled.add(self._webkit)
+
+        self.show_all()
+
+        self._webkit.connect('notify::load-status', self.__load_status_cb)
+        get_client().connect('connect', self.__connection_cb)
+
+        gobject.timeout_add_seconds(_RETRY_TIMEOUT, self._open)
+
+    def open_report(self, **kwargs):
+        self._open('_report', **kwargs)
+        self._reveal = True
+
+    def _open(self, *args, **kwargs):
+        url = '/'.join(('http://127.0.0.1:%s' % webui_port.value,) + args)
+        query = urllib.urlencode(kwargs)
+        if query:
+            url += '?' + query
+
+        _logger.debug('Open %s', url)
+        self._webkit.open(url)
+
+    def __load_status_cb(self, widget, pspec):
+        _logger.debug('Webkit status changed to %r',
+                self._webkit.props.load_status)
+        if self._webkit.props.load_status in (_WEBKIT_LOAD_FINISHED,
+                _WEBKIT_LOAD_FIRST_VISUALLY_NON_EMPTY_LAYOUT):
+            self._initial_load = False
+            self.get_window().set_cursor(None)
+            if self._reveal:
+                self.reveal()
+                self._reveal = False
+        elif self._webkit.props.load_status == _WEBKIT_LOAD_FAILED:
+            if self._initial_load:
+                gobject.timeout_add_seconds(_RETRY_TIMEOUT, self._open)
+            else:
+                self.get_window().set_cursor(None)
+        elif self._webkit.props.load_status == _WEBKIT_LOAD_PROVISIONAL:
+            self.get_window().set_cursor(gtk.gdk.Cursor(gtk.gdk.WATCH))
+
+    def __realize_cb(self, window):
+        wm.set_bundle_id(window.window, SN_BROWSER_NAME)
+        wm.set_activity_id(window.window, create_activity_id())
+        self.disconnect_by_func(self.__realize_cb)
+
+    def __connection_cb(self, sender, mountpoint, connected):
+        self._open()
+
+
+class Palette(BasePalette):
+
+    def __init__(self, activity):
+        self._activity = activity
+        BasePalette.__init__(self, activity)
+
+    def setup_palette(self):
+        title = self._activity.get_title()
+        self.set_primary_text(glib.markup_escape_text(title))
diff --git a/plugin/bundleregistry.py b/plugin/bundleregistry.py
new file mode 100644
index 0000000..d4ca5f8
--- /dev/null
+++ b/plugin/bundleregistry.py
@@ -0,0 +1,288 @@
+# Copyright (C) 2012 Aleksey Lim
+#
+# 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 3 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, see <http://www.gnu.org/licenses/>.
+
+import os
+import logging
+from os.path import lexists, basename
+from gettext import gettext as _
+
+import gtk
+import gobject
+
+import sugar_network
+from sugar.util import LRU
+from sugar.bundle.activitybundle import ActivityBundle
+
+from jarabe.plugins.sn import SN_BROWSER_NAME, get_client
+
+
+_logger = logging.getLogger('plugins.sn.bundleregistry')
+_stub_icon_path = None
+_online_cache = LRU(100)
+
+
+class BundleRegistry(gobject.GObject):
+    """Tracks the available activity bundles"""
+
+    __gsignals__ = {
+        'bundle-added': (gobject.SIGNAL_RUN_FIRST, gobject.TYPE_NONE,
+                         ([gobject.TYPE_PYOBJECT])),
+        'bundle-removed': (gobject.SIGNAL_RUN_FIRST, gobject.TYPE_NONE,
+                           ([gobject.TYPE_PYOBJECT])),
+        'bundle-changed': (gobject.SIGNAL_RUN_FIRST, gobject.TYPE_NONE,
+                           ([gobject.TYPE_PYOBJECT])),
+    }
+
+    def __init__(self):
+        gobject.GObject.__init__(self)
+        self._bundles = {}
+
+    def populate(self):
+        client = get_client()
+
+        for props in client.find('~', 'context', 0, 50,
+                reply=['guid', 'keep', 'keep_impl', 'position']):
+            if props['keep_impl']:
+                bundle = self._add_bundle(props['guid'], props)
+                self.emit('bundle-added', bundle)
+
+        client.connect('keep', self.__keep_cb)
+        client.connect('keep_impl', self.__keep_impl_cb)
+
+    def __iter__(self):
+        return self._bundles.itervalues()
+
+    def __len__(self):
+        return len(self._bundles)
+
+    def get_bundle(self, context_guid, mountpoint='~'):
+        if context_guid == 'org.laptop.JournalActivity':
+            return None
+        elif context_guid == SN_BROWSER_NAME:
+            return _BrowserInfo()
+
+        if context_guid in self._bundles:
+            return self._bundles[context_guid]
+
+        if context_guid in _online_cache:
+            return _online_cache[context_guid]
+
+        if mountpoint == '~':
+            return None
+
+        try:
+            props = get_client().get(mountpoint, 'context', context_guid,
+                    reply=['guid', 'keep', 'keep_impl', 'title'])
+            result = _ContextInfo(mountpoint, props)
+        except Exception:
+            _logger.warning(_('Cannot fetch activity metadata'))
+            result = None
+
+        _online_cache[context_guid] = result
+
+        return result
+
+    def get_activities_for_type(self, mime_type):
+        # TODO
+        return []
+
+    def is_installed(self, bundle):
+        return hasattr(bundle, 'get_bundle_id') and \
+                bundle.get_bundle_id() in self._bundles
+
+    def is_bundle_favorite(self, bundle_id, version):
+        bundle = self._bundles.get(bundle_id)
+        if bundle is None:
+            return False
+        return bundle.props['keep']
+
+    def set_bundle_favorite(self, bundle_id, version, keep):
+        bundle = self._bundles.get(bundle_id)
+        if bundle is None:
+            return
+        get_client().update('~', 'context', bundle_id, keep=keep)
+        bundle.props['keep'] = keep
+        self.emit('bundle-changed', bundle)
+
+    def get_bundle_position(self, bundle_id, version):
+        bundle = self._bundles.get(bundle_id)
+        if bundle is None:
+            return -1, -1
+        return bundle.props['position']
+
+    def set_bundle_position(self, bundle_id, version, x, y):
+        bundle = self._bundles.get(bundle_id)
+        if bundle is None:
+            return
+        position = bundle.props['position'] = [int(x), int(y)]
+        get_client().update('~', 'context', bundle_id, position=position)
+        self.emit('bundle-changed', bundle)
+
+    def get_default_for_type(self, mime_type):
+        # TODO
+        pass
+
+    def is_activity_protected(self, bundle_id):
+        # TODO
+        return False
+
+    def install(self, bundle, uid=None, force_downgrade=False):
+        raise NotImplementedError('Not yet supported')
+
+    def uninstall(self, bundle, force=False, delete_profile=False):
+        raise NotImplementedError('Not yet supported')
+
+    def upgrade(self, bundle):
+        raise NotImplementedError('Not yet supported')
+
+    def _add_bundle(self, bundle_id, props):
+        for path in sugar_network.checkins(bundle_id):
+            try:
+                bundle = self._bundles[bundle_id] = \
+                        _BundleInfo(ActivityBundle(path), props)
+                _logger.info('Add %r bundle', bundle_id)
+                return bundle
+            except Exception:
+                _logger.exception('Cannot load %r bundle from %r',
+                        bundle_id, path)
+        else:
+            _logger.info('No bundles for %r', bundle_id)
+
+    def __keep_cb(self, sender, bundle_id, keep):
+        bundle = self._bundles.get(bundle_id)
+        if bundle is None:
+            return
+        bundle.props['keep'] = keep
+        self.emit('bundle-changed', bundle)
+
+    def __keep_impl_cb(self, sender, bundle_id, keep_impl):
+        if keep_impl:
+            props = get_client().get('~', 'context', bundle_id,
+                    reply=['guid', 'keep', 'keep_impl', 'position'])
+            bundle = self._bundles.get(bundle_id)
+            if bundle is None:
+                bundle = self._add_bundle(bundle_id, props)
+            else:
+                bundle.props.update(props)
+            self.emit('bundle-added', bundle)
+        else:
+            if bundle_id in self._bundles:
+                bundle = self._bundles.pop(bundle_id)
+                self.emit('bundle-removed', bundle)
+
+
+class _ContextInfo(object):
+
+    def __init__(self, mountpoint, props):
+        self.mountpoint = mountpoint
+        self.props = props
+
+    def get_name(self):
+        return self.props['title']
+
+    def get_bundle_id(self):
+        return self.props['guid']
+
+    def get_icon(self):
+        path = None
+        try:
+            path, __ = get_client().get_blob_path('/', 'context',
+                    self.get_bundle_id(), 'artifact_icon')
+        except Exception, error:
+            _logger.debug('Fail to get icon for %r: %s',
+                    self.get_bundle_id(), error)
+
+        if not path or os.stat(path).st_size == 0:
+            return _stub_icon()
+        else:
+            svg_path = path + '.svg'
+            if not lexists(svg_path):
+                os.symlink(basename(path), svg_path)
+            return svg_path
+
+    def get_tags(self):
+        # Doesn't matter with Sweets' features enabled
+        return []
+
+    def get_activity_version(self):
+        return ''
+
+    def get_installation_time(self):
+        return 0
+
+    def get_command(self):
+        # Doesn't matter with Sweets' features enabled
+        return ''
+
+    def is_user_activity(self):
+        # Doesn't matter with Sweets' features enabled
+        return False
+
+    def get_path(self):
+        return '/'
+
+
+class _BundleInfo(object):
+
+    def __init__(self, bundle, props):
+        self.props = props
+        self.mountpoint = '~'
+        self._bundle = bundle
+
+    def __getattr__(self, name):
+        return getattr(self._bundle, name)
+
+
+class _BrowserInfo(object):
+
+    def __init__(self):
+        icon = gtk.icon_theme_get_default().lookup_icon('sugar-network', 0, 0)
+        self._icon_path = icon.get_filename()
+
+    def get_name(self):
+        return _('Sugar Network')
+
+    def get_bundle_id(self):
+        return SN_BROWSER_NAME
+
+    def get_icon(self):
+        return self._icon_path
+
+    def get_tags(self):
+        return []
+
+    def get_activity_version(self):
+        return '0'
+
+    def get_installation_time(self):
+        return 0
+
+    def get_command(self):
+        return ''
+
+    def is_user_activity(self):
+        return False
+
+    def get_path(self):
+        return '/'
+
+
+def _stub_icon():
+    global _stub_icon_path
+
+    if not _stub_icon_path:
+        theme = gtk.icon_theme_get_default()
+        _stub_icon_path = theme.lookup_icon('empty', 0, 0).get_filename()
+    return _stub_icon_path
diff --git a/plugin/launcher.py b/plugin/launcher.py
new file mode 100644
index 0000000..08bb2f5
--- /dev/null
+++ b/plugin/launcher.py
@@ -0,0 +1,168 @@
+# Copyright (C) 2012 Aleksey Lim
+#
+# 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 3 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, see <http://www.gnu.org/licenses/>.
+
+import logging
+from gettext import gettext as _
+
+import gtk
+import wnck
+import gconf
+import gobject
+
+from sugar_network import launch
+
+from sugar import wm
+from sugar.graphics.xocolor import XoColor
+from sugar.activity.activityfactory import create_activity_id
+
+from jarabe.view.launcher import LaunchWindow
+from jarabe.journal import model
+from jarabe.model import shell
+from jarabe.plugins.sn import get_client, get_registry, add_alert, get_browser
+
+
+_logger = logging.getLogger('plugins.sn.launcher')
+
+
+class Launcher(object):
+
+    def __init__(self):
+        self._launches = {}
+        self._screen = wnck.screen_get_default()
+        self._screen.connect('window-opened', self.__window_opened_cb)
+        get_client().connect('launch', self.__launch_cb)
+
+    def launch(self, bundle, activity_id=None, object_id=None, uri=None,
+            color=None, invited=None, args=None):
+        if activity_id:
+            activity = shell.get_model().get_activity_by_id(activity_id)
+            if activity is not None:
+                _logger.debug('Resume %r activity', activity_id)
+                activity.get_window().activate(gtk.get_current_event_time())
+                return
+
+        def found_jobject(props):
+            self._launch(bundle,
+                    props.get('activity_id') or activity_id,
+                    props.get('object_id') or object_id,
+                    uri,
+                    XoColor(props['icon-color']) if 'icon-color' in props \
+                            else color,
+                    args)
+
+        def not_found_jobject(error):
+            _logger.exception('Failed to launch %r: %s',
+                    bundle.get_bundle_id(), error)
+
+        # pylint: disable-msg=W0212
+        if activity_id and not object_id:
+            _logger.debug('Look for jobject for %r activity_id', activity_id)
+            model._get_datastore().find({'activity_id': activity_id}, ['uid'],
+                    reply_handler=lambda jobjects, total: \
+                            found_jobject(jobjects[0] if total else {}),
+                    error_handler=not_found_jobject, byte_arrays=True)
+        elif object_id and not activity_id:
+            _logger.debug('Look for %r jobject', object_id)
+            model._get_datastore().get_properties(object_id,
+                    reply_handler=found_jobject,
+                    error_handler=not_found_jobject, byte_arrays=True)
+        else:
+            self._launch(bundle, activity_id, object_id, uri, color, args)
+
+    def _launch(self, bundle, activity_id, object_id, uri, color, extra_args):
+        if not activity_id:
+            activity_id = create_activity_id()
+        if color is None:
+            gc = gconf.client_get_default()
+            color = XoColor(gc.get_string('/desktop/sugar/user/color'))
+
+        args = ['-b', bundle.get_bundle_id()]
+        if activity_id:
+            args.extend(['-a', activity_id])
+        if object_id:
+            args.extend(['-o', object_id])
+        if uri:
+            args.extend(['-u', uri])
+        if extra_args:
+            args.extend(extra_args)
+
+        _logger.info('Starting %r: activity_id=%r object_id=%r uri=%r',
+                bundle.get_bundle_id(), activity_id, object_id, uri)
+
+        pipe = launch(bundle.mountpoint, bundle.get_bundle_id(), 'activity',
+                args)
+        gobject.io_add_watch(pipe.fileno(), gobject.IO_IN | gobject.IO_HUP,
+                self.__progress_cb, pipe, activity_id)
+
+        window = LaunchWindow(activity_id, bundle.get_icon(), color)
+        window.connect('realize', self.__window_realize_cb,
+                bundle.get_bundle_id(), activity_id)
+        window.show()
+        self._launches[activity_id] = window
+
+    def _stop_launcher(self, activity_id):
+        if activity_id not in self._launches:
+            return
+        _logger.debug('Stop %r launcher', activity_id)
+        window = self._launches.pop(activity_id)
+        window.destroy()
+
+    def _failure_report(self, props):
+        kwargs = {'context': props.get('context')}
+        if 'implementation' in props:
+            kwargs['implementation'] = props['implementation']
+        if 'log_path' in props:
+            kwargs['filename'] = props['log_path']
+        get_browser().open_report(**kwargs)
+
+    def __window_opened_cb(self, screen, window):
+        if window.get_window_type() != wnck.WINDOW_NORMAL or \
+                wm.get_sugar_window_type(window) == 'launcher':
+            return
+        activity_id = wm.get_activity_id(window)
+        if activity_id:
+            self._stop_launcher(activity_id)
+
+    def __window_realize_cb(self, widget, bundle_id, activity_id):
+        wm.set_activity_id(widget.window, str(activity_id))
+        widget.window.property_change('_SUGAR_WINDOW_TYPE', 'STRING', 8,
+                gtk.gdk.PROP_MODE_REPLACE, 'launcher')
+        wm.set_bundle_id(widget.window, str(bundle_id))
+
+    def __launch_cb(self, sender, mountpoint, bundle_id, command, object_id,
+            uri, args):
+        bundle = get_registry().get_bundle(bundle_id, mountpoint)
+        if bundle is None:
+            add_alert('error',
+                    msg=_('Cannot find %r activity to launch') % bundle_id)
+        else:
+            self.launch(bundle, object_id=object_id, uri=uri, args=args)
+
+    def __progress_cb(self, source, cb_condition, pipe, activity_id):
+        event = pipe.read()
+        _logger.debug('Execution progress for %r: %r',
+                activity_id, event or 'exit')
+        if event is None:
+            self._stop_launcher(activity_id)
+            return False
+        phase, props = event
+        try:
+            if phase == 'failure':
+                _logger.warning('Activity %r failed', activity_id)
+                self._failure_report(props)
+        except Exception:
+            _logger.exception('Failed to process event')
+
+        return True
diff --git a/po/sugar-network-plugin.pot b/po/sugar-network-plugin.pot
new file mode 100644
index 0000000..15d0498
--- /dev/null
+++ b/po/sugar-network-plugin.pot
@@ -0,0 +1,64 @@
+# SOME DESCRIPTIVE TITLE.
+# Copyright (C) YEAR THE PACKAGE'S COPYRIGHT HOLDER
+# This file is distributed under the same license as the PACKAGE package.
+# FIRST AUTHOR <EMAIL@ADDRESS>, YEAR.
+#
+#, fuzzy
+msgid ""
+msgstr ""
+"Project-Id-Version: PACKAGE VERSION\n"
+"Report-Msgid-Bugs-To: \n"
+"POT-Creation-Date: 2012-07-13 21:50+0000\n"
+"PO-Revision-Date: YEAR-MO-DA HO:MI+ZONE\n"
+"Last-Translator: FULL NAME <EMAIL@ADDRESS>\n"
+"Language-Team: LANGUAGE <LL@li.org>\n"
+"Language: \n"
+"MIME-Version: 1.0\n"
+"Content-Type: text/plain; charset=CHARSET\n"
+"Content-Transfer-Encoding: 8bit\n"
+
+#: cpsection/__init__.py:21
+msgid "Sweets Distribution"
+msgstr ""
+
+#: cpsection/view.py:57
+msgid "Sweets Distribution features"
+msgstr ""
+
+#: cpsection/view.py:61
+msgid "Sweets Desktop is default Sugar session"
+msgstr ""
+
+#: cpsection/view.py:67
+msgid "Sugar Network interface"
+msgstr ""
+
+#: cpsection/view.py:71 plugin/__init__.py:42 plugin/browser.py:52
+#: plugin/bundleregistry.py:255
+msgid "Sugar Network"
+msgstr ""
+
+#: cpsection/view.py:76
+msgid "Connect to master server"
+msgstr ""
+
+#: cpsection/view.py:81
+msgid "Auto discover server in local network"
+msgstr ""
+
+#: cpsection/view.py:86
+msgid "Server mode"
+msgstr ""
+
+#: plugin/__init__.py:41
+msgid "Sugar Network error"
+msgstr ""
+
+#: plugin/bundleregistry.py:90
+msgid "Cannot fetch activity metadata"
+msgstr ""
+
+#: plugin/launcher.py:148
+#, python-format
+msgid "Cannot find %r activity to launch"
+msgstr ""
diff --git a/sweets.recipe b/sweets.recipe
new file mode 100644
index 0000000..f0fd86b
--- /dev/null
+++ b/sweets.recipe
@@ -0,0 +1,23 @@
+[Package]
+project   = SweetsDistribution:Factory
+implement = %(name)s
+name      = sugar-network-plugin
+summary   = Plugin for Sugar Shell to add Sugar Network UI
+license   = GPLv3+
+homepage  = http://wiki.sugarlabs.org/go/Sugar_Network
+
+version   = 0.4
+stability = developer
+
+requires  = sugar-network; base/pywebkitgtk
+
+[Build]
+extdir    = /opt/sweets/sugar/share/sugar/extensions
+plugindir = /opt/sweets/sugar/src/jarabe/plugins
+install   = install -m 0755 -d %(DESTDIR)s/%(extdir)s/cpsection &&
+            cp -r cpsection %(DESTDIR)s/%(extdir)s/cpsection/sn &&
+            install -m 0755 -d %(DESTDIR)s/%(extdir)s/globalkey &&
+            cp -r globalkey/*.py %(DESTDIR)s/%(extdir)s/globalkey/ &&
+            install -m 0755 -d %(DESTDIR)s/%(plugindir)s &&
+            cp -r plugin %(DESTDIR)s/%(plugindir)s/sn &&
+            true