[svn] GpgOL - r186 - in trunk: . doc
svn author wk
cvs at cvs.gnupg.org
Fri Oct 5 11:36:20 CEST 2007
Author: wk
Date: 2007-10-05 11:36:10 +0200 (Fri, 05 Oct 2007)
New Revision: 186
Added:
trunk/doc/
trunk/doc/Makefile.am
trunk/doc/gpgol.texi
trunk/doc/gpl.texi
Modified:
trunk/Makefile.am
trunk/configure.ac
Log:
Started documentation.
Modified: trunk/Makefile.am
===================================================================
--- trunk/Makefile.am 2007-09-21 14:02:48 UTC (rev 185)
+++ trunk/Makefile.am 2007-10-05 09:36:10 UTC (rev 186)
@@ -22,7 +22,7 @@
EXTRA_DIST = autogen.sh
-SUBDIRS = src po m4
+SUBDIRS = src po m4 doc
dist-hook:
echo "$(VERSION)" > $(distdir)/VERSION
Modified: trunk/configure.ac
===================================================================
--- trunk/configure.ac 2007-09-21 14:02:48 UTC (rev 185)
+++ trunk/configure.ac 2007-10-05 09:36:10 UTC (rev 186)
@@ -24,8 +24,11 @@
AC_INIT([gpgol], my_version[]m4_if(my_issvn,[yes],[-svn[]svn_revision]),
[bug-gpgol at g10code.com])
+NEED_GPG_ERROR_VERSION=1.4
NEED_GPGME_API=1
NEED_GPGME_VERSION=1.1.0
+NEED_LIBASSUAN_API=1
+NEED_LIBASSUAN_VERSION=1.0.4
SVN_REVISION=svn_revision
@@ -40,6 +43,9 @@
AC_GNU_SOURCE
+have_gpg_error=no
+have_libassuan=no
+
AC_SUBST(PACKAGE)
AC_SUBST(PACKAGE_GT)
AC_SUBST(VERSION)
@@ -141,9 +147,20 @@
AM_PATH_GPGME("$NEED_GPGME_API:$NEED_GPGME_VERSION",
have_gpgme=yes,have_gpgme=no)
-AM_PATH_GPG_ERROR(0.5,, AC_MSG_ERROR([libgpg-error was not found]))
+AM_PATH_GPG_ERROR("$NEED_GPG_ERROR_VERSION",
+ have_gpg_error=yes,have_gpg_error=no)
+AC_DEFINE(GPG_ERR_SOURCE_DEFAULT, GPG_ERR_SOURCE_USER_2,
+ [The default error source for GpgOL.])
+AM_PATH_LIBASSUAN("$NEED_LIBASSUAN_API:$NEED_LIBASSUAN_VERSION",
+ have_libassuan=yes,have_libassuan=no)
+AH_BOTTOM([
+/* We don't want the old assuan codes anymore. */
+#define _ASSUAN_ONLY_GPG_ERRORS 1
+])
+
+
# Note, that autogen.sh greps for the next line.
AM_GNU_GETTEXT_VERSION(0.12.1)
AM_GNU_GETTEXT([external])
@@ -190,6 +207,16 @@
# together and the user can acquire them all together.
#
die=no
+if test "$have_gpg_error" = "no"; then
+ die=yes
+ AC_MSG_NOTICE([[
+***
+*** You need libgpg-error to build this program.
+** This library is for example available at
+*** ftp://ftp.gnupg.org/pub/gcrypt/libgpg-error
+*** (at least version $NEED_GPG_ERROR_VERSION is required.)
+***]])
+fi
if test "$have_gpgme" = "no"; then
die=yes
AC_MSG_NOTICE([[
@@ -200,6 +227,16 @@
*** (at least version $NEED_GPGME_VERSION is required.)
***]])
fi
+if test "$have_libassuan" = "no"; then
+ die=yes
+ AC_MSG_NOTICE([[
+***
+*** You need libassuan to build this program.
+*** This library is for example available at
+*** ftp://ftp.gnupg.org/pub/gcrypt/libassuan/
+*** (at least version $NEED_LIBASSUAN_VERSION is required).
+***]])
+fi
if test "$die" = "yes"; then
AC_MSG_ERROR([[
***
@@ -212,6 +249,7 @@
AC_CONFIG_FILES([ Makefile
src/Makefile
src/versioninfo.rc
+doc/Makefile
po/Makefile.in
m4/Makefile
])
Added: trunk/doc/Makefile.am
===================================================================
--- trunk/doc/Makefile.am 2007-09-21 14:02:48 UTC (rev 185)
+++ trunk/doc/Makefile.am 2007-10-05 09:36:10 UTC (rev 186)
@@ -0,0 +1,19 @@
+# doc - Automake template
+# Copyright (C) 2007 g10 Code GmbH
+#
+# This file is free software; as a special exception the author gives
+# unlimited permission to copy and/or distribute it, with or without
+# modifications, as long as this notice is preserved.
+#
+# This program is distributed in the hope that it will be useful, but
+# WITHOUT ANY WARRANTY, to the extent permitted by law; without even the
+# implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+
+## Process this file with automake to produce Makefile.in
+
+DISTCLEANFILES = gpgol.cps
+
+info_TEXINFOS = gpgol.texi
+gpgol_TEXINFOS = gpl.texi
+
+
Added: trunk/doc/gpgol.texi
===================================================================
--- trunk/doc/gpgol.texi 2007-09-21 14:02:48 UTC (rev 185)
+++ trunk/doc/gpgol.texi 2007-10-05 09:36:10 UTC (rev 186)
@@ -0,0 +1,231 @@
+\input texinfo
+ at setfilename gpgol.info
+ at settitle The GpgOL Technical Manual
+
+ at dircategory GnuPG Plugin
+ at direntry
+* gpgol: (gpgol). An Outlook Plugin for GnuPG.
+ at end direntry
+
+ at include version.texi
+
+ at c Unify some of the indices.
+ at syncodeindex tp fn
+ at syncodeindex pg fn
+
+ at macro mycopyrightnotice
+Copyright @copyright{} 2007 g10 Code GmbH
+ at end macro
+ at macro mypermissionnotice
+Permission is granted to copy, distribute and/or modify this document
+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. The text of the license can be found in the
+section entitled ``Copying''.
+ at end macro
+
+
+
+ at ifinfo
+This file documents @acronym{GpgOL}; a GnuPG plugin for Microsoft's
+Outlook MUA.
+
+This is @cite{The GpgOL Technical Manual} for @acronym{GpgOL} version
+ at value{VERSION}, last updated @value{UPDATED}.
+
+ at sp 1
+ at mycopyrightnotice{}
+ at sp 1
+ at mypermissionnotice{}
+ at end ifinfo
+
+
+ at iftex
+ at shorttitlepage The `GpgOL' Technical Manual
+ at titlepage
+ at center @titlefont{The `GpgOL'}
+ at sp 1
+ at center @titlefont{Technical Manual}
+ at sp 6
+ at center for version @value{VERSION}
+ at sp 1
+ at center last updated @value{UPDATED}
+ at sp 1
+ at author by Werner Koch, g10 Code GmbH
+ at email{wk@@gnupg.org}
+ at page
+ at vskip 0pt plus 1filll
+ at mycopyrightnotice{}
+ at sp 1
+ at mypermissionnotice{}
+ at end titlepage
+ at summarycontents
+ at contents
+ at page
+ at end iftex
+
+
+ at ifnottex
+ at node Top
+ at top Main Menu
+This is @cite{The GpgOL Technical Manual} for @acronym{GpgOL} version
+ at value{VERSION}, last updated @value{UPDATED}.
+ at sp 1
+ at mycopyrightnotice{}
+ at sp 1
+ at mypermissionnotice{}
+ at sp 1
+ at end ifnottex
+
+
+ at menu
+* Introduction:: How to use this manual.
+* Assuan Protocol:: Description of the UI server protocol.
+
+Appendices
+
+* Copying:: The GNU General Public License says how you
+ can copy and share this manual.
+
+Indices
+
+* Concept Index:: Index of concepts and programs.
+* Function and Data Index:: Index of functions, variables and data types.
+
+ at end menu
+
+ at node Introduction
+ at chapter Introduction
+Bla bla
+
+
+
+ at node Assuan Protocol
+ at chapter Description of the UI Server Protocol
+
+This section descripes the protocol used between @acronym{GpgOL} and the
+User Interface Server (UI server). All cryptographic operations are
+done by this server and teh server is responsible for all dialogs. If a
+a server is not available, @acronym{GpgOL} can only use a very limited
+internal crypto server.
+
+We assume that the connection has already been established; see the
+Assuan manual for details.
+
+ at menu
+* ENCRYPT:: Encrypting a message.
+* Miscellaneous Commands:: Commands not related to a specific operation.
+ at end menu
+
+
+
+ at node ENCRYPT
+ at section Encrypting a Message
+
+Before encrytion can be done the recipients must be set using the
+command:
+
+ at deffn Command RECIPIENT @var{string}
+
+Set the recipient for the encryption. @var{string} is an RFC-2822
+recipient name. This command may or may not check the recipient for
+validity right away; if it does not all recipients are expected to be
+checked at the time of the @code{ENCRYPT} command. All @code{RECIPIENT}
+commands are cumulative until a successful @code{ENCRYPT} command or
+until a RESET command. Linefeeds are obviously not allowed in
+ at var{string} and should be folded into spaces (which are equivalent).
+ at end deffn
+
+ at noindent
+To tell the server the source and destination of the data, the next two
+commands are to be used:
+
+ at deffn Command INPUT FD=@var{n}
+Set the file descriptor for the message to be encrypted to @var{n}. The
+message send to the server is binary encoded.
+
+GpgOL is a Windows only program, thus @var{n} is not a libc file
+descriptor but a regular system handle. Given that the Assuan
+connection works over a socket, it is not possible to use regular
+inheritance to make the file descriptor available to the server.
+Thus @code{DuplicateHandle} needs to be used to duplicate a handle
+to the server process. This is the reason that the server needs to
+implement the @code{GETINFO pid} command. Sending this command a second
+time replaces the file descriptor set by the last one.
+ at c If @var{n} is not given, this commands uses the
+ at c %last file descriptor passed to the application.
+ at c %@xref{fun-assuan_sendfd, ,the assuan_sendfd function,assuan,the
+ at c %Libassuan manual}, on how to do descriptor passing.
+ at end deffn
+
+ at deffn Command OUTPUT FD=@var{n}
+Set the file descriptor to be used for the output (i.e. the encrypted
+message) to @var{n}. Binary encoding is expected. For details on the
+file descriptor, see the @code{INPUT} command.
+ at end deffn
+
+ at noindent
+The setting of the recipients, the data source and destination may
+happen in any order, even intermixed. If this has been done the actual
+encryption operation is called using:
+
+ at deffn Command ENCRYPT --protocol=@var{name}
+
+This command reads the plaintext from the file descriptor set by the
+ at code{INPUT} command, encrypts it and writes the ciphertext to the file
+descriptor set by the @code{OUTPUT} command. The server may (and
+should) overlap readind and writing. The recipients used for the
+encryption are all the recipients set so far. If any recipient is not
+usable the server should take appropriate measures to notify the user
+about the problem and may cancel the operation by returning an error
+code. The used file descriptors are a void after this command; the
+recipient list is only cleared if the server returns success.
+
+ at noindent
+Because GpgOL uses a streaming mode of operation the server is not
+allowed to auto select the protocol and must obey to the mandatory
+ at var{protocol} parameter:
+
+ at table @code
+ at item OpenPGP
+Use the OpenPGP protocol (RFC-2440).
+ at item CMS
+Use the CMS (PKCS#7) protocol (RFC-3852).
+ at end table
+
+ at end deffn
+
+
+
+
+ at node Miscellaneous Commands
+ at section Miscellaneous Commands
+
+The server needs to implement the following commands which are not
+related to a specific command:
+
+ at deffn Command GETINFO @var{what}
+This is a multi purpose command, commonly used to return a variety of
+information. The required subcommands as descriped by the @var{waht}
+parameter are:
+
+ at table @code
+ at item pid
+Return the process id of the server in decimal notation using an Assuan
+data line.
+ at end table
+ at end deffn
+
+
+
+
+ at include gpl.texi
+
+
+ at node Concept Index
+ at unnumbered Concept Index
+ at printindex cp
+ at node Function and Data Index
+ at unnumbered Function and Data Index
+ at printindex fn
+ at bye
Added: trunk/doc/gpl.texi
===================================================================
--- trunk/doc/gpl.texi 2007-09-21 14:02:48 UTC (rev 185)
+++ trunk/doc/gpl.texi 2007-10-05 09:36:10 UTC (rev 186)
@@ -0,0 +1,725 @@
+ at node Copying
+
+ at unnumbered GNU General Public License
+ at center Version 3, 29 June 2007
+
+ at c This file is intended to be included in another file.
+
+ at display
+Copyright @copyright{} 2007 Free Software Foundation, Inc. @url{http://fsf.org/}
+
+Everyone is permitted to copy and distribute verbatim copies of this
+license document, but changing it is not allowed.
+ at end display
+
+ at unnumberedsec 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
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+
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+have certain responsibilities if you distribute copies of the
+software, or if you modify it: responsibilities to respect the freedom
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+
+For example, if you distribute copies of such a program, whether
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+
+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
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+Therefore, we have designed this version of the GPL to prohibit the
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+freedom of users.
+
+Finally, every program is threatened constantly by software patents.
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+The precise terms and conditions for copying, distribution and
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+
+ at iftex
+ at unnumberedsec TERMS AND CONDITIONS
+ at end iftex
+ at ifinfo
+ at center TERMS AND CONDITIONS
+ at end ifinfo
+
+ at enumerate 0
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+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.
+
+ at item 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:
+
+ at enumerate a
+ at item
+Disclaiming warranty or limiting liability differently from the terms
+of sections 15 and 16 of this License; or
+
+ at item
+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
+
+ at item
+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
+
+ at item
+Limiting the use for publicity purposes of names of licensors or
+authors of the material; or
+
+ at item
+Declining to grant rights under trademark law for use of some trade
+names, trademarks, or service marks; or
+
+ at item
+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.
+ at end enumerate
+
+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.
+
+ at item 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.
+
+ at item 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.
+
+ at item 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.
+
+ at item 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.
+
+ at item 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.
+
+ at item 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.
+
+ at item 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.
+
+ at item 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.
+
+ at item 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.
+
+ at item 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.
+
+ at iftex
+ at heading END OF TERMS AND CONDITIONS
+ at end iftex
+ at ifinfo
+ at center END OF TERMS AND CONDITIONS
+ at end ifinfo
+ at unnumberedsec 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.
+ at smallexample
+ at var{one line to give the program's name and a brief idea of what it does.}
+Copyright (C) @var{year} @var{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 @url{http://www.gnu.org/licenses/}.
+ at end smallexample
+
+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:
+
+ at smallexample
+ at var{program} Copyright (C) @var{year} @var{name of author}
+This program comes with ABSOLUTELY NO WARRANTY; for details type @samp{show w}.
+This is free software, and you are welcome to redistribute it under certain conditions; type @samp{show c} for details.
+ at end smallexample
+
+The hypothetical commands @samp{show w} and @samp{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
+ at url{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 @url{http://www.gnu.org/philosophy/why-not-lgpl.html}.
+
+ at end enumerate
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