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authorJesús <heckyel@hyperbola.info>2021-01-24 22:37:50 -0500
committerJesús <heckyel@hyperbola.info>2021-01-24 22:37:50 -0500
commit58f4a04f5ccdc5397147d7c1adddb52285220891 (patch)
tree94be9c9e5c5d4885160156ed6bbe93526b6b91c9
downloadgit-snapsign-58f4a04f5ccdc5397147d7c1adddb52285220891.tar.lz
git-snapsign-58f4a04f5ccdc5397147d7c1adddb52285220891.tar.xz
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+docs/*.info
diff --git a/LICENSE b/LICENSE
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+ GNU GENERAL PUBLIC LICENSE
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+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) 2021 Jesus E.
+
+ 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 <https://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:
+
+ git-snapsign Copyright (C) 2021 Jesus E.
+ 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
+<https://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
+<https://www.gnu.org/licenses/why-not-lgpl.html>.
diff --git a/Makefile b/Makefile
new file mode 100644
index 0000000..c337bca
--- /dev/null
+++ b/Makefile
@@ -0,0 +1,63 @@
+PHONY := all
+
+PROJECT_NAME = git-snapsign
+
+V_MAJOR = 1
+V_MINOR = 0
+V_PATCH = 0
+V_EXTRA =
+VERSION = $(V_MAJOR).$(V_MINOR).$(V_PATCH)$(V_EXTRA)
+
+DESTDIR =
+PREFIX = /usr
+BINDIR = $(PREFIX)/bin
+INFODIR = $(PREFIX)/share/info
+DOCDIR = $(PREFIX)/share/doc
+LICDIR = $(PREFIX)/share/licenses
+
+all: clean tar.gz
+
+clean:
+ rm -f $(PROJECT_NAME)-$(VERSION).tar.gz
+ rm -rf $(PROJECT_NAME)-$(VERSION)
+ rm -rf docs/git-snapsign
+ find . -name "*.info" -delete
+ find . -name "*.html" -delete
+
+help:
+ @echo '$(PROJECT_NAME) '
+ @echo ' '
+ @echo 'Usage: '
+ @echo ' make all - Generate tarball '
+ @echo ' make clean - Delete all generated files '
+ @echo ' make info - Generate documentation '
+ @echo ' make install - Install $(PROJECT_NAME), needs root permissions '
+ @echo ' make tar.gz - Make compressed file with tar and gzip '
+ @echo ' '
+
+install: info
+ install -Dm 0755 $(PROJECT_NAME) $(DESTDIR)$(BINDIR)/$(PROJECT_NAME)
+ install -Dm 0644 docs/$(PROJECT_NAME).info $(DESTDIR)$(INFODIR)/$(PROJECT_NAME).info
+ install -d $(DESTDIR)$(DOCDIR)/$(PROJECT_NAME)
+ cd docs ;\
+ for f in $(PROJECT_NAME)/*.html; do \
+ install -m644 $$f $(DESTDIR)$(DOCDIR)/$(basename $$f) ;\
+ done
+ install -Dm 0644 LICENSE $(DESTDIR)$(LICDIR)/$(PROJECT_NAME)/LICENSE
+
+info:
+ @cd docs && makeinfo git-snapsign.texi
+ @cd docs && makeinfo --html git-snapsign.texi
+
+tar.gz:
+ @tar -czf $(PROJECT_NAME)-$(VERSION).tar.gz --transform "s|^|$(PROJECT_NAME)-$(VERSION)/|" --owner 0 --group 0 \
+ --exclude '*.info' \
+ --exclude '*.html' \
+ --exclude '*~' \
+ --exclude '.git' \
+ --exclude 'docs/git-snapsign' \
+ -- \
+ docs git-snapsign README.md Makefile \
+ LICENSE
+
+.PHONY: $(PHONY)
diff --git a/README.md b/README.md
new file mode 100644
index 0000000..cc2df3a
--- /dev/null
+++ b/README.md
@@ -0,0 +1,66 @@
+# Overview
+
+A small git-integrated script to sign a repository archive tarball for use with cgit.
+
+## Usage
+
+ git-snapsign [--dry-run] [--force] [-s <key-id>] [-F <fmt>] [-p <pfx>] -t <tag>
+
+`git-snapsign` will create a detached signature for archive output from
+`git-archive(1)` for `<tag>` and add it to the tag's notes in the
+`refs/notes/signatures/<fmt>` namespace. cgit can then display these alongside
+the snapshots it offers on the repository's summary page.
+
+## Options
+
+```
+-d, --dry-run:
+ Do everything except add the signature blobs and associated note refs.
+
+-f, --force: Overwrite any existing signature
+
+-F, --format <fmt>:
+ Format to pass to git-archive(1). Currently, we only accept either
+ "tar.gz", "tar.lz", "tar.xz", "tgz", "tar" or "zip" as we sign only the
+ underlying archive, not the compressed version. For default "tar.lz".
+
+-p, --prefix <pfx>:
+ Prefix to use when determining the prefix to pass to git-archive(1).
+ By default, we use the repository basename to create
+ <repo-name>-<tag>.<fmt>. Note that we also drop any intital "v"
+ character from <tag>.
+
+-P, --push: Upload signature to remote git
+
+-s, --signature <key-id>:
+ Create the signature using <key-id>. If not provided, the output of
+ git config user.signingkey is used.
+
+-t, --tag <tag>: Git tag name
+
+-v, --version:
+ Show version of git-snapsign
+
+-h, --help:
+ This message
+```
+
+### Examples
+
+Create a signature for the archive tarball at tag v1.0.0.
+
+ git-snapsign -t v1.0.0
+
+Same as above but use the zip format.
+
+ git-snapsign -F zip -t v1.0.0
+
+Create a signature with the key corresponding to heckyel@hyperbola.info
+
+ git-snapsign -s 4DF21B6A7C1021B25C360914F6EE7BC59A315766 -t v1.0.0
+
+Use "linux-libre-lts" to create the archive prefix. Useful for when the repository
+basename is not the canonical name of the project. For example, the
+linux-libre-lts project may wish to set the prefix this way.
+
+ git-snapsign -p linux-libre-lts -t v5.4.96
diff --git a/docs/fdl.texi b/docs/fdl.texi
new file mode 100644
index 0000000..fc19ddd
--- /dev/null
+++ b/docs/fdl.texi
@@ -0,0 +1,506 @@
+@c The GNU Free Documentation License.
+@center Version 1.3, 3 November 2008
+
+@c This file is intended to be included within another document,
+@c hence no sectioning command or @node.
+
+@display
+Copyright @copyright{} 2000, 2001, 2002, 2007, 2008 Free Software Foundation, Inc.
+@uref{http://fsf.org/}
+
+Everyone is permitted to copy and distribute verbatim copies
+of this license document, but changing it is not allowed.
+@end display
+
+@enumerate 0
+@item
+PREAMBLE
+
+The purpose of this License is to make a manual, textbook, or other
+functional and useful document @dfn{free} in the sense of freedom: to
+assure everyone the effective freedom to copy and redistribute it,
+with or without modifying it, either commercially or noncommercially.
+Secondarily, this License preserves for the author and publisher a way
+to get credit for their work, while not being considered responsible
+for modifications made by others.
+
+This License is a kind of ``copyleft'', which means that derivative
+works of the document must themselves be free in the same sense. It
+complements the GNU General Public License, which is a copyleft
+license designed for free software.
+
+We have designed this License in order to use it for manuals for free
+software, because free software needs free documentation: a free
+program should come with manuals providing the same freedoms that the
+software does. But this License is not limited to software manuals;
+it can be used for any textual work, regardless of subject matter or
+whether it is published as a printed book. We recommend this License
+principally for works whose purpose is instruction or reference.
+
+@item
+APPLICABILITY AND DEFINITIONS
+
+This License applies to any manual or other work, in any medium, that
+contains a notice placed by the copyright holder saying it can be
+distributed under the terms of this License. Such a notice grants a
+world-wide, royalty-free license, unlimited in duration, to use that
+work under the conditions stated herein. The ``Document'', below,
+refers to any such manual or work. Any member of the public is a
+licensee, and is addressed as ``you''. You accept the license if you
+copy, modify or distribute the work in a way requiring permission
+under copyright law.
+
+A ``Modified Version'' of the Document means any work containing the
+Document or a portion of it, either copied verbatim, or with
+modifications and/or translated into another language.
+
+A ``Secondary Section'' is a named appendix or a front-matter section
+of the Document that deals exclusively with the relationship of the
+publishers or authors of the Document to the Document's overall
+subject (or to related matters) and contains nothing that could fall
+directly within that overall subject. (Thus, if the Document is in
+part a textbook of mathematics, a Secondary Section may not explain
+any mathematics.) The relationship could be a matter of historical
+connection with the subject or with related matters, or of legal,
+commercial, philosophical, ethical or political position regarding
+them.
+
+The ``Invariant Sections'' are certain Secondary Sections whose titles
+are designated, as being those of Invariant Sections, in the notice
+that says that the Document is released under this License. If a
+section does not fit the above definition of Secondary then it is not
+allowed to be designated as Invariant. The Document may contain zero
+Invariant Sections. If the Document does not identify any Invariant
+Sections then there are none.
+
+The ``Cover Texts'' are certain short passages of text that are listed,
+as Front-Cover Texts or Back-Cover Texts, in the notice that says that
+the Document is released under this License. A Front-Cover Text may
+be at most 5 words, and a Back-Cover Text may be at most 25 words.
+
+A ``Transparent'' copy of the Document means a machine-readable copy,
+represented in a format whose specification is available to the
+general public, that is suitable for revising the document
+straightforwardly with generic text editors or (for images composed of
+pixels) generic paint programs or (for drawings) some widely available
+drawing editor, and that is suitable for input to text formatters or
+for automatic translation to a variety of formats suitable for input
+to text formatters. A copy made in an otherwise Transparent file
+format whose markup, or absence of markup, has been arranged to thwart
+or discourage subsequent modification by readers is not Transparent.
+An image format is not Transparent if used for any substantial amount
+of text. A copy that is not ``Transparent'' is called ``Opaque''.
+
+Examples of suitable formats for Transparent copies include plain
+ASCII without markup, Texinfo input format, La@TeX{} input
+format, SGML or XML using a publicly available
+DTD, and standard-conforming simple HTML,
+PostScript or PDF designed for human modification. Examples
+of transparent image formats include PNG, XCF and
+JPG. Opaque formats include proprietary formats that can be
+read and edited only by proprietary word processors, SGML or
+XML for which the DTD and/or processing tools are
+not generally available, and the machine-generated HTML,
+PostScript or PDF produced by some word processors for
+output purposes only.
+
+The ``Title Page'' means, for a printed book, the title page itself,
+plus such following pages as are needed to hold, legibly, the material
+this License requires to appear in the title page. For works in
+formats which do not have any title page as such, ``Title Page'' means
+the text near the most prominent appearance of the work's title,
+preceding the beginning of the body of the text.
+
+The ``publisher'' means any person or entity that distributes copies
+of the Document to the public.
+
+A section ``Entitled XYZ'' means a named subunit of the Document whose
+title either is precisely XYZ or contains XYZ in parentheses following
+text that translates XYZ in another language. (Here XYZ stands for a
+specific section name mentioned below, such as ``Acknowledgements'',
+``Dedications'', ``Endorsements'', or ``History''.) To ``Preserve the Title''
+of such a section when you modify the Document means that it remains a
+section ``Entitled XYZ'' according to this definition.
+
+The Document may include Warranty Disclaimers next to the notice which
+states that this License applies to the Document. These Warranty
+Disclaimers are considered to be included by reference in this
+License, but only as regards disclaiming warranties: any other
+implication that these Warranty Disclaimers may have is void and has
+no effect on the meaning of this License.
+
+@item
+VERBATIM COPYING
+
+You may copy and distribute the Document in any medium, either
+commercially or noncommercially, provided that this License, the
+copyright notices, and the license notice saying this License applies
+to the Document are reproduced in all copies, and that you add no other
+conditions whatsoever to those of this License. You may not use
+technical measures to obstruct or control the reading or further
+copying of the copies you make or distribute. However, you may accept
+compensation in exchange for copies. If you distribute a large enough
+number of copies you must also follow the conditions in section 3.
+
+You may also lend copies, under the same conditions stated above, and
+you may publicly display copies.
+
+@item
+COPYING IN QUANTITY
+
+If you publish printed copies (or copies in media that commonly have
+printed covers) of the Document, numbering more than 100, and the
+Document's license notice requires Cover Texts, you must enclose the
+copies in covers that carry, clearly and legibly, all these Cover
+Texts: Front-Cover Texts on the front cover, and Back-Cover Texts on
+the back cover. Both covers must also clearly and legibly identify
+you as the publisher of these copies. The front cover must present
+the full title with all words of the title equally prominent and
+visible. You may add other material on the covers in addition.
+Copying with changes limited to the covers, as long as they preserve
+the title of the Document and satisfy these conditions, can be treated
+as verbatim copying in other respects.
+
+If the required texts for either cover are too voluminous to fit
+legibly, you should put the first ones listed (as many as fit
+reasonably) on the actual cover, and continue the rest onto adjacent
+pages.
+
+If you publish or distribute Opaque copies of the Document numbering
+more than 100, you must either include a machine-readable Transparent
+copy along with each Opaque copy, or state in or with each Opaque copy
+a computer-network location from which the general network-using
+public has access to download using public-standard network protocols
+a complete Transparent copy of the Document, free of added material.
+If you use the latter option, you must take reasonably prudent steps,
+when you begin distribution of Opaque copies in quantity, to ensure
+that this Transparent copy will remain thus accessible at the stated
+location until at least one year after the last time you distribute an
+Opaque copy (directly or through your agents or retailers) of that
+edition to the public.
+
+It is requested, but not required, that you contact the authors of the
+Document well before redistributing any large number of copies, to give
+them a chance to provide you with an updated version of the Document.
+
+@item
+MODIFICATIONS
+
+You may copy and distribute a Modified Version of the Document under
+the conditions of sections 2 and 3 above, provided that you release
+the Modified Version under precisely this License, with the Modified
+Version filling the role of the Document, thus licensing distribution
+and modification of the Modified Version to whoever possesses a copy
+of it. In addition, you must do these things in the Modified Version:
+
+@enumerate A
+@item
+Use in the Title Page (and on the covers, if any) a title distinct
+from that of the Document, and from those of previous versions
+(which should, if there were any, be listed in the History section
+of the Document). You may use the same title as a previous version
+if the original publisher of that version gives permission.
+
+@item
+List on the Title Page, as authors, one or more persons or entities
+responsible for authorship of the modifications in the Modified
+Version, together with at least five of the principal authors of the
+Document (all of its principal authors, if it has fewer than five),
+unless they release you from this requirement.
+
+@item
+State on the Title page the name of the publisher of the
+Modified Version, as the publisher.
+
+@item
+Preserve all the copyright notices of the Document.
+
+@item
+Add an appropriate copyright notice for your modifications
+adjacent to the other copyright notices.
+
+@item
+Include, immediately after the copyright notices, a license notice
+giving the public permission to use the Modified Version under the
+terms of this License, in the form shown in the Addendum below.
+
+@item
+Preserve in that license notice the full lists of Invariant Sections
+and required Cover Texts given in the Document's license notice.
+
+@item
+Include an unaltered copy of this License.
+
+@item
+Preserve the section Entitled ``History'', Preserve its Title, and add
+to it an item stating at least the title, year, new authors, and
+publisher of the Modified Version as given on the Title Page. If
+there is no section Entitled ``History'' in the Document, create one
+stating the title, year, authors, and publisher of the Document as
+given on its Title Page, then add an item describing the Modified
+Version as stated in the previous sentence.
+
+@item
+Preserve the network location, if any, given in the Document for
+public access to a Transparent copy of the Document, and likewise
+the network locations given in the Document for previous versions
+it was based on. These may be placed in the ``History'' section.
+You may omit a network location for a work that was published at
+least four years before the Document itself, or if the original
+publisher of the version it refers to gives permission.
+
+@item
+For any section Entitled ``Acknowledgements'' or ``Dedications'', Preserve
+the Title of the section, and preserve in the section all the
+substance and tone of each of the contributor acknowledgements and/or
+dedications given therein.
+
+@item
+Preserve all the Invariant Sections of the Document,
+unaltered in their text and in their titles. Section numbers
+or the equivalent are not considered part of the section titles.
+
+@item
+Delete any section Entitled ``Endorsements''. Such a section
+may not be included in the Modified Version.
+
+@item
+Do not retitle any existing section to be Entitled ``Endorsements'' or
+to conflict in title with any Invariant Section.
+
+@item
+Preserve any Warranty Disclaimers.
+@end enumerate
+
+If the Modified Version includes new front-matter sections or
+appendices that qualify as Secondary Sections and contain no material
+copied from the Document, you may at your option designate some or all
+of these sections as invariant. To do this, add their titles to the
+list of Invariant Sections in the Modified Version's license notice.
+These titles must be distinct from any other section titles.
+
+You may add a section Entitled ``Endorsements'', provided it contains
+nothing but endorsements of your Modified Version by various
+parties---for example, statements of peer review or that the text has
+been approved by an organization as the authoritative definition of a
+standard.
+
+You may add a passage of up to five words as a Front-Cover Text, and a
+passage of up to 25 words as a Back-Cover Text, to the end of the list
+of Cover Texts in the Modified Version. Only one passage of
+Front-Cover Text and one of Back-Cover Text may be added by (or
+through arrangements made by) any one entity. If the Document already
+includes a cover text for the same cover, previously added by you or
+by arrangement made by the same entity you are acting on behalf of,
+you may not add another; but you may replace the old one, on explicit
+permission from the previous publisher that added the old one.
+
+The author(s) and publisher(s) of the Document do not by this License
+give permission to use their names for publicity for or to assert or
+imply endorsement of any Modified Version.
+
+@item
+COMBINING DOCUMENTS
+
+You may combine the Document with other documents released under this
+License, under the terms defined in section 4 above for modified
+versions, provided that you include in the combination all of the
+Invariant Sections of all of the original documents, unmodified, and
+list them all as Invariant Sections of your combined work in its
+license notice, and that you preserve all their Warranty Disclaimers.
+
+The combined work need only contain one copy of this License, and
+multiple identical Invariant Sections may be replaced with a single
+copy. If there are multiple Invariant Sections with the same name but
+different contents, make the title of each such section unique by
+adding at the end of it, in parentheses, the name of the original
+author or publisher of that section if known, or else a unique number.
+Make the same adjustment to the section titles in the list of
+Invariant Sections in the license notice of the combined work.
+
+In the combination, you must combine any sections Entitled ``History''
+in the various original documents, forming one section Entitled
+``History''; likewise combine any sections Entitled ``Acknowledgements'',
+and any sections Entitled ``Dedications''. You must delete all
+sections Entitled ``Endorsements.''
+
+@item
+COLLECTIONS OF DOCUMENTS
+
+You may make a collection consisting of the Document and other documents
+released under this License, and replace the individual copies of this
+License in the various documents with a single copy that is included in
+the collection, provided that you follow the rules of this License for
+verbatim copying of each of the documents in all other respects.
+
+You may extract a single document from such a collection, and distribute
+it individually under this License, provided you insert a copy of this
+License into the extracted document, and follow this License in all
+other respects regarding verbatim copying of that document.
+
+@item
+AGGREGATION WITH INDEPENDENT WORKS
+
+A compilation of the Document or its derivatives with other separate
+and independent documents or works, in or on a volume of a storage or
+distribution medium, is called an ``aggregate'' if the copyright
+resulting from the compilation is not used to limit the legal rights
+of the compilation's users beyond what the individual works permit.
+When the Document is included in an aggregate, this License does not
+apply to the other works in the aggregate which are not themselves
+derivative works of the Document.
+
+If the Cover Text requirement of section 3 is applicable to these
+copies of the Document, then if the Document is less than one half of
+the entire aggregate, the Document's Cover Texts may be placed on
+covers that bracket the Document within the aggregate, or the
+electronic equivalent of covers if the Document is in electronic form.
+Otherwise they must appear on printed covers that bracket the whole
+aggregate.
+
+@item
+TRANSLATION
+
+Translation is considered a kind of modification, so you may
+distribute translations of the Document under the terms of section 4.
+Replacing Invariant Sections with translations requires special
+permission from their copyright holders, but you may include
+translations of some or all Invariant Sections in addition to the
+original versions of these Invariant Sections. You may include a
+translation of this License, and all the license notices in the
+Document, and any Warranty Disclaimers, provided that you also include
+the original English version of this License and the original versions
+of those notices and disclaimers. In case of a disagreement between
+the translation and the original version of this License or a notice
+or disclaimer, the original version will prevail.
+
+If a section in the Document is Entitled ``Acknowledgements'',
+``Dedications'', or ``History'', the requirement (section 4) to Preserve
+its Title (section 1) will typically require changing the actual
+title.
+
+@item
+TERMINATION
+
+You may not copy, modify, sublicense, or distribute the Document
+except as expressly provided under this License. Any attempt
+otherwise to copy, modify, sublicense, or distribute it is void, and
+will automatically terminate your rights under this License.
+
+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, receipt of a copy of some or all of the same material does
+not give you any rights to use it.
+
+@item
+FUTURE REVISIONS OF THIS LICENSE
+
+The Free Software Foundation may publish new, revised versions
+of the GNU Free Documentation 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. See
+@uref{http://www.gnu.org/copyleft/}.
+
+Each version of the License is given a distinguishing version number.
+If the Document specifies that a particular numbered version of this
+License ``or any later version'' applies to it, you have the option of
+following the terms and conditions either of that specified version or
+of any later version that has been published (not as a draft) by the
+Free Software Foundation. If the Document does not specify a version
+number of this License, you may choose any version ever published (not
+as a draft) by the Free Software Foundation. If the Document
+specifies that a proxy can decide which future versions of this
+License can be used, that proxy's public statement of acceptance of a
+version permanently authorizes you to choose that version for the
+Document.
+
+@item
+RELICENSING
+
+``Massive Multiauthor Collaboration Site'' (or ``MMC Site'') means any
+World Wide Web server that publishes copyrightable works and also
+provides prominent facilities for anybody to edit those works. A
+public wiki that anybody can edit is an example of such a server. A
+``Massive Multiauthor Collaboration'' (or ``MMC'') contained in the
+site means any set of copyrightable works thus published on the MMC
+site.
+
+``CC-BY-SA'' means the Creative Commons Attribution-Share Alike 3.0
+license published by Creative Commons Corporation, a not-for-profit
+corporation with a principal place of business in San Francisco,
+California, as well as future copyleft versions of that license
+published by that same organization.
+
+``Incorporate'' means to publish or republish a Document, in whole or
+in part, as part of another Document.
+
+An MMC is ``eligible for relicensing'' if it is licensed under this
+License, and if all works that were first published under this License
+somewhere other than this MMC, and subsequently incorporated in whole
+or in part into the MMC, (1) had no cover texts or invariant sections,
+and (2) were thus incorporated prior to November 1, 2008.
+
+The operator of an MMC Site may republish an MMC contained in the site
+under CC-BY-SA on the same site at any time before August 1, 2009,
+provided the MMC is eligible for relicensing.
+
+@end enumerate
+
+@page
+@heading ADDENDUM: How to use this License for your documents
+
+To use this License in a document you have written, include a copy of
+the License in the document and put the following copyright and
+license notices just after the title page:
+
+@smallexample
+@group
+ Copyright (C) @var{year} @var{your name}.
+ Permission is granted to copy, distribute and/or modify this document
+ under the terms of the GNU Free Documentation License, Version 1.3
+ or any later version published by the Free Software Foundation;
+ with no Invariant Sections, no Front-Cover Texts, and no Back-Cover
+ Texts. A copy of the license is included in the section entitled ``GNU
+ Free Documentation License''.
+@end group
+@end smallexample
+
+If you have Invariant Sections, Front-Cover Texts and Back-Cover Texts,
+replace the ``with@dots{}Texts.'' line with this:
+
+@smallexample
+@group
+ with the Invariant Sections being @var{list their titles}, with
+ the Front-Cover Texts being @var{list}, and with the Back-Cover Texts
+ being @var{list}.
+@end group
+@end smallexample
+
+If you have Invariant Sections without Cover Texts, or some other
+combination of the three, merge those two alternatives to suit the
+situation.
+
+If your document contains nontrivial examples of program code, we
+recommend releasing these examples in parallel under your choice of
+free software license, such as the GNU General Public License,
+to permit their use in free software.
+
+@c Local Variables:
+@c ispell-local-pdict: "ispell-dict"
+@c End:
+
diff --git a/docs/git-snapsign.texi b/docs/git-snapsign.texi
new file mode 100644
index 0000000..b16809b
--- /dev/null
+++ b/docs/git-snapsign.texi
@@ -0,0 +1,214 @@
+\input texinfo @c -*-texinfo-*-
+@c %**start of header
+@setfilename git-snapsign.info
+@include version.texi
+@settitle git-snapsign @value{VERSION}
+
+@copying
+This manual is for git-snapsign (version @value{VERSION}, @value{UPDATED}),
+for Sign a repository archive tarball for use with cgit.
+
+Copyright @copyright{} 2021 Jesus E.
+
+@quotation
+Permission is granted to copy, distribute and/or modify this document
+under the terms of the GNU Free Documentation License, Version 1.3 or
+any later version published by the Free Software Foundation; with no
+Invariant Sections, with no Front-Cover Texts, and with no Back-Cover
+Texts. A copy of the license is included in the section entitled
+``GNU Free Documentation License''.
+@end quotation
+@end copying
+
+@dircategory Freedom
+@direntry
+* git-snapsign: Sign a repository archive tarball for use with cgit
+@end direntry
+
+@titlepage
+@title git-snapsign
+@subtitle for version @value{VERSION}, @value{UPDATED}
+@author Jesus E. (@email{heckyel@@hyperbola.info})
+@page
+@vskip 0pt plus 1filll
+@insertcopying
+@end titlepage
+
+
+@contents
+
+
+@node Top
+@top git-snapsign
+This manual is for git-snapsign (version @value{VERSION}, @value{UPDATED}).
+
+@menu
+* Description:: General purpose and information.
+* Options:: Usage Parameters of git-snapsign.
+* Examples:: How to use git-snapsign.
+* Installation Requirements:: Requirements to build and install git-snapsign.
+* Installation:: Installing git-snapsign from source.
+* GNU Free Documentation License:: Copying and sharing this documentation.
+@end menu
+
+@node Description
+@chapter Description
+
+@cindex description
+Create a detached signature for an archive of <tag> and add it to the tag's
+notes in the refs/notes/signatures/<fmt> namespace.
+
+This is useful for cgit's snapshot support.
+
+@node Options
+@chapter Options
+
+@cindex options
+
+@deffn {-d, --dry-run} Do everything except add the signature blobs and associated note refs.
+@end deffn
+
+@deffn {-f, --force} Overwrite any existing signature
+@end deffn
+
+@deffn {-F, --format <fmt>} Format to pass to @code{git-archive}.
+Currently, we only accept either "tar.gz", "tar.lz", "tar.xz", "tgz', "tar" or "zip"
+as we sign only the underlying archive, not the compressed version. For default "tar.lz".
+@end deffn
+
+@deffn {-p, --prefix <pfx>} Prefix to use when determining the prefix to pass to @code{git-archive}.
+By default, we use the repository basename to create @code{<repo-name>-<tag>.<fmt>}.
+Note that we also drop any intital "v" character from <tag>.
+@end deffn
+
+@deffn {-P, --push} Upload signature to remote git
+@end deffn
+
+@deffn {-t, --tag <tag>} Git tag name
+@end deffn
+
+@deffn {-s, --signature <key-id>} Create the signature using @code{<key-id>}.
+If not provided, the output of @code{git config user.signingkey} is used.
+@end deffn
+
+@deffn {-v, --version} Show version of git-snapsign
+@end deffn
+
+@deffn {-h, --help} This message.
+@end deffn
+
+
+@node Examples
+@chapter Examples
+@cindex examples
+
+@itemize @bullet
+@item
+Create a signature for the archive tarball at tag v1.0.0.
+
+@example
+git-snapsign -t v1.0.0
+@end example
+
+@item
+Same as above but use the zip format.
+
+@example
+git-snapsign -F zip -t v1.0.0
+@end example
+
+@item
+Create a signature with the key corresponding to
+@email{heckyel@@hyperbola.info}
+
+@example
+git-snapsign -s 4DF21B6A7C1021B25C360914F6EE7BC59A315766 -t v1.0.0
+@end example
+
+@item
+Use "linux-libre-lts" to create the archive prefix.
+Useful for when the repository basename is not the
+canonical name of the project. For example, the
+linux-libre-lts project may wish to set the prefix
+this way.
+
+@example
+git-snapsign -p linux-libre-lts -t v5.4.96
+@end example
+
+@end itemize
+
+@node Installation Requirements
+@chapter Installation Requirements
+@cindex installation requirements
+
+@itemize @bullet
+
+@item
+sh
+
+@item
+git
+
+@item
+lzip
+
+@item
+xz
+
+@item
+texinfo
+
+@end itemize
+
+@node Installation
+@chapter Installation
+@cindex Installation
+
+You can install git-snapsign directly copying @file{git-snapsign}
+file to /usr/bin/git-snapsign
+
+@section Installing git-snapsign
+To install using make for all users, run:
+
+@example
+doas make install
+@end example
+
+or as root:
+
+@example
+make install
+@end example
+
+@section Releasing a new version
+Update the version number in:
+@itemize @bullet
+@item
+@file{Makefile}
+@item
+@file{git-snapsign}
+@item
+@file{doc/version.texi}
+@end itemize
+
+Then run @samp{make info} to build the docs.
+
+@example
+make info
+@end example
+
+Generate tarball
+
+@example
+make tar.gz
+@end example
+
+
+@node GNU Free Documentation License
+@appendix GNU Free Documentation License
+
+@include fdl.texi
+
+
+@bye
diff --git a/docs/version.texi b/docs/version.texi
new file mode 100644
index 0000000..0731d14
--- /dev/null
+++ b/docs/version.texi
@@ -0,0 +1,3 @@
+@set UPDATED 24 Jan 2021
+@set UPDATED-MONTH Jan 2021
+@set VERSION 1.0.0
diff --git a/git-snapsign b/git-snapsign
new file mode 100755
index 0000000..c5e37d4
--- /dev/null
+++ b/git-snapsign
@@ -0,0 +1,210 @@
+#!/bin/bash
+#
+# Copyright (C) 2021 Jesus E.
+#
+# 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 <https://www.gnu.org/licenses/>.
+#
+VERSION='1.0.0'
+
+HELP_MESSAGE="\
+usage: $(basename "$0") [--dry-run] [--force] [-s <key-id>] [-F <fmt>] [-p <pfx>] -t <tag>
+
+ Create a detached signature for an archive of <tag> and add it to the tag's
+ notes in the refs/notes/signatures/<fmt> namespace.
+
+ This is useful for cgit's snapshot support.
+
+ -d, --dry-run Don't actually add any signature refs
+ -f, --force Overwrite any existing signature
+ -F, --format <fmt> Archive format to use; either \"tar.gz\", \"tar.lz\", \"tar.xz\",
+ \"tgz\", \"tar\" or \"zip\". For default \"tar.lz\".
+ -p, --prefix <pfx> Snapsnot prefix to use instead of the repository basename
+ -P, --push Upload signature to remote git
+ -t, --tag <tag> Git tag name
+ -s, --signature <key-id> Create the signature using <key-id> instead of the default
+ -v, --version Show version of $(basename "$0")
+ -h, --help This message
+
+Examples:
+ git-snapsign -t 1.0.0
+ git-snapsign --format tar.gz -t 1.0.0
+"
+
+#-------------
+# variables
+#-------------
+
+# Require Git repository
+eval "$(
+ echo "$OPTIONS_SPEC" \
+ | git rev-parse ||
+ echo exit $?
+)"
+
+gpg="$(git config gpg.program)"
+toplevel="$(git rev-parse --show-toplevel)"
+
+dryrun="n"
+force="n"
+format="tar.lz"
+keyid="$(git config user.signingkey)"
+prefix="$(basename "${toplevel%.git}")"
+
+_cgit_snappfx="$(git config --local cgit.snapshot-prefix)"
+_repo_snappfx="$(git config --local repo.snapshot-prefix)"
+
+if [ -n "${_cgit_snappfx}" ]; then
+ prefix="${_cgit_snappfx})"
+elif [ -n "${_repo_snappfx}" ]; then
+ prefix="${_repo_snappfx})"
+fi
+
+ref="$(git symbolic-ref HEAD 2> /dev/null | sed -e 's/refs\/heads\///')"
+if [[ -n $ref ]]; then
+ gtbranch=$ref
+else
+ gtbranch=$ref
+fi
+
+check_format() {
+ if [ "${format}" != "tar.gz" ] \
+ && [ "${format}" != "tar.lz" ] \
+ && [ "${format}" != "tar.xz" ] \
+ && [ "${format}" != "tgz" ] \
+ && [ "${format}" != "tar" ] \
+ && [ "${format}" != "zip" ];
+ then
+ echo -e "fatal: format not supported by git: ${format}"
+ exit 1
+ fi
+}
+
+#---------
+# core
+#---------
+if [ -z "${1}" ]; then
+ echo "$HELP_MESSAGE"
+fi
+
+for param in "$@"; do
+ shift
+ case "$param" in
+ "--dry-run") set -- "$@" "-d" ;;
+ "--force") set -- "$@" "-f" ;;
+ "--format") set -- "$@" "-F" ;;
+ "--prefix") set -- "$@" "-p" ;;
+ "--push") set -- "$@" "-P" ;;
+ "--signature") set -- "$@" "-s" ;;
+ "--tag") set -- "$@" "-t" ;;
+ "--version") set -- "$@" "-v" ;;
+ "--help") set -- "$@" "-h" ;;
+ *) set -- "$@" "$param" ;;
+ esac
+done
+
+while getopts ":dfPhvF:s:p:t:" opt; do
+ case $opt in
+ d)
+ dryrun=y
+ ;;
+ f)
+ force=y
+ ;;
+ F)
+ format=$OPTARG
+ check_format "$@"
+ ;;
+ p)
+ prefix="${OPTARG}"
+ ;;
+ P)
+ git push origin "${gtbranch}" refs/notes/*
+ ;;
+ s)
+ keyid="$OPTARG"
+ ;;
+ t)
+ if ! git rev-parse --verify "${OPTARG}" >/dev/null 2>&1; then
+ echo -e "fatal: failed to verify tag: ${OPTARG}"
+ exit 1
+ fi
+ tag="${OPTARG}"
+ ;;
+ v)
+ echo -e "$VERSION"
+ exit 0
+ ;;
+ h)
+ echo -e "$HELP_MESSAGE"
+ exit 0
+ ;;
+ \?)
+ echo "Invalid option -$OPTARG" >&2
+ exit 1
+ ;;
+ esac
+done
+
+tmpdir="$(mktemp -dp"${TMPDIR:-/tmp}")"
+trap 'rm -rf "${tmpdir}"' EXIT HUP INT QUIT TERM
+
+if [[ -n "${tag}" ]]; then
+ archive="${tmpdir}/${prefix}-${tag#v}.${format}"
+
+ if [ "$format" == "tar.lz" ]; then
+ git archive --format=tar --prefix "${prefix}-${tag#v}/" \
+ "${tag}" | lzip -c > "${archive}"
+ elif [ "$format" == "tar.xz" ]; then
+ git archive --format=tar --prefix "${prefix}-${tag#v}/" \
+ "${tag}" | xz -c > "${archive}"
+ else
+ git archive --format "${format}" --prefix "${prefix}-${tag#v}/" \
+ --output "${archive}" "${tag}"
+ fi
+
+ if ! "${gpg:-gpg}" --output "${archive}.asc" --armor \
+ --sign-with "${keyid}" --detach-sign <"${archive}"
+ then
+ echo -e "fatal: failed to sign archive"
+ exit 1
+ fi
+
+ if [ "${dryrun}" == "y" ]; then
+ sig_hash="$(git hash-object --stdin <"${archive}.asc")"
+ echo -e "dry-run: add signature (${sig_hash}) note for tag ${tag}"
+ else
+ sig_hash="$(git hash-object -w --stdin <"${archive}.asc")"
+ fi
+
+ if [ "${force}" == "y" ]; then
+ git notes --ref="refs/notes/signatures/${format}" \
+ add --force -C "${sig_hash}" "${tag}"
+ _interger=$?
+ if [[ "$_interger" -eq 0 ]]; then
+ echo -e "Forcing add signature (${sig_hash}) note for tag ${tag}"
+ else
+ exit 1
+ fi
+ else
+ git notes --ref="refs/notes/signatures/${format}" \
+ add -C "${sig_hash}" "${tag}"
+ _interger=$?
+ if [[ "$_interger" -eq 0 ]]; then
+ echo -e "Add signature (${sig_hash}) note for tag ${tag}"
+ else
+ echo -e "Signature already exists or invalid tag"
+ exit 1
+ fi
+ fi
+fi