Merge branch 'webcal'

Fixes #831

.github/workflows/pypi-publish.yml

@@ -11,10 +11,10 @@ jobs:
       - uses: actions/setup-python@v2
         with:
           python-version: 3.x
-      - name: Install dependencies
-        run: python -m pip install wheel
+      - name: Install Build dependencies
+        run: pip install build
       - name: Build
-        run: python setup.py sdist bdist_wheel
+        run: python -m build --sdist --wheel
       - name: Publish to PyPI
         uses: pypa/gh-action-pypi-publish@master
         with:

.github/workflows/test.yml

@@ -6,30 +6,33 @@ jobs:
     strategy:
       matrix:
         os: [ubuntu-latest, macos-latest, windows-latest]
-        python-version: ['3.6', '3.7', '3.8', '3.9', '3.10', pypy-3.7, pypy-3.8]
+        python-version: ['3.6', '3.7', '3.8', '3.9', '3.10', pypy-3.7, pypy-3.8, pypy-3.9]
         exclude:
           - os: windows-latest
             python-version: pypy-3.7
           - os: windows-latest
             python-version: pypy-3.8
+          - os: windows-latest
+            python-version: pypy-3.9
     runs-on: ${{ matrix.os }}
     steps:
       - uses: actions/checkout@v2
       - uses: actions/setup-python@v2
         with:
           python-version: ${{ matrix.python-version }}
-      - name: Install from source
-        run: python -m pip install --editable .[test,bcrypt]
-      - name: Run tests
-        run: python setup.py test
+      - name: Install Test dependencies
+        run: pip install tox
+      - name: Test
+        run: tox
+      - name: Install Coveralls
+        if: github.event_name == 'push'
+        run: pip install coveralls
       - name: Upload coverage to Coveralls
         if: github.event_name == 'push'
         env:
           COVERALLS_PARALLEL: true
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
-        run: |
-          python -m pip install coveralls
-          python -m coveralls --service=github
+        run: coveralls --service=github
 
   coveralls-finish:
     needs: test
@@ -39,9 +42,9 @@ jobs:
       - uses: actions/setup-python@v2
         with:
           python-version: 3.x
+      - name: Install Coveralls
+        run: pip install coveralls
       - name: Finish Coveralls parallel builds
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
-        run: |
-          python -m pip install coveralls
-          python -m coveralls --service=github --finish
+        run: coveralls --service=github --finish

CHANGELOG.md

@@ -2,6 +2,24 @@
 
 ## master
 
+## 3.1.8
+
+* Fix setuptools requirement if installing wheel
+* Tests: Switch from `python setup.py test` to `tox`
+* Small changes to build system configuration and tests
+
+## 3.1.7
+
+* Fix random href fallback
+
+## 3.1.6
+
+* Ignore `Not a directory` error for optional config paths
+* Fix upload of whole address book/calendar with UIDs that collide on
+  case-insensitive filesystem
+* Remove runtime dependency on setuptools for Python>=3.9
+* Windows: Block ADS paths
+
 ## 3.1.5
 
 * Ignore configuration file if access is denied

COPYING

@@ -1,674 +0,0 @@
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-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
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-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>.

COPYING.md

@@ -0,0 +1,675 @@
+### GNU GENERAL PUBLIC LICENSE
+
+Version 3, 29 June 2007
+
+Copyright (C) 2007 Free Software Foundation, Inc.
+<https://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 <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:
+
+        <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 <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>.

DOCUMENTATION.md

@@ -673,7 +673,7 @@ Default: `none`
 
 Path to the htpasswd file.
 
-Default:
+Default: `/etc/radicale/users`
 
 ##### htpasswd_encryption
 

MANIFEST.in

@@ -1,3 +1,3 @@
-include CHANGELOG.md COPYING DOCUMENTATION.md README.md
+include CHANGELOG.md COPYING.md DOCUMENTATION.md README.md
 include config rights
 include radicale.wsgi

README.md

@@ -1,9 +1,20 @@
-# Read Me
+# Radicale
 
 [![Test](https://github.com/Kozea/Radicale/actions/workflows/test.yml/badge.svg?branch=master)](https://github.com/Kozea/Radicale/actions/workflows/test.yml)
 [![Coverage Status](https://coveralls.io/repos/github/Kozea/Radicale/badge.svg?branch=master)](https://coveralls.io/github/Kozea/Radicale?branch=master)
 
-Radicale is a free and open-source CalDAV and CardDAV server.
+Radicale is a small but powerful CalDAV (calendars, to-do lists) and CardDAV
+(contacts) server, that:
+
+* Shares calendars and contact lists through CalDAV, CardDAV and HTTP.
+* Supports events, todos, journal entries and business cards.
+* Works out-of-the-box, no complicated setup or configuration required.
+* Can limit access by authentication.
+* Can secure connections with TLS.
+* Works with many CalDAV and CardDAV clients
+* Stores all data on the file system in a simple folder structure.
+* Can be extended with plugins.
+* Is GPLv3-licensed free software.
 
 For the complete documentation, please visit
 [Radicale master Documentation](https://radicale.org/master.html).

radicale/__init__.py

@@ -29,13 +29,11 @@ import os
 import threading
 from typing import Iterable, Optional, cast
 
-import pkg_resources
-
-from radicale import config, log, types
+from radicale import config, log, types, utils
 from radicale.app import Application
 from radicale.log import logger
 
-VERSION: str = pkg_resources.get_distribution("radicale").version
+VERSION: str = utils.package_version("radicale")
 
 _application_instance: Optional[Application] = None
 _application_config_path: Optional[str] = None

radicale/config.py

@@ -283,8 +283,8 @@ def load(paths: Optional[Iterable[Tuple[str, bool]]] = None
                 config = {s: {o: parser[s][o] for o in parser.options(s)}
                           for s in parser.sections()}
         except Exception as e:
-            if not (ignore_if_missing and
-                    isinstance(e, (FileNotFoundError, PermissionError))):
+            if not (ignore_if_missing and isinstance(e, (
+                    FileNotFoundError, NotADirectoryError, PermissionError))):
                 raise RuntimeError("Failed to load %s: %s" % (config_source, e)
                                    ) from e
             config = Configuration.SOURCE_MISSING

radicale/httputils.py

@@ -24,13 +24,25 @@ Helper functions for HTTP.
 
 import contextlib
 import os
+import pathlib
+import sys
 import time
 from http import client
-from typing import List, Mapping, cast
+from typing import List, Mapping, Union, cast
 
 from radicale import config, pathutils, types
 from radicale.log import logger
 
+if sys.version_info < (3, 9):
+    import pkg_resources
+
+    _TRAVERSABLE_LIKE_TYPE = pathlib.Path
+else:
+    import importlib.abc
+    from importlib import resources
+
+    _TRAVERSABLE_LIKE_TYPE = Union[importlib.abc.Traversable, pathlib.Path]
+
 NOT_ALLOWED: types.WSGIResponse = (
     client.FORBIDDEN, (("Content-Type", "text/plain"),),
     "Access to the requested resource forbidden.")
@@ -140,36 +152,63 @@ def redirect(location: str, status: int = client.FOUND) -> types.WSGIResponse:
             "Redirected to %s" % location)
 
 
-def serve_folder(folder: str, base_prefix: str, path: str,
-                 path_prefix: str = "/.web", index_file: str = "index.html",
-                 mimetypes: Mapping[str, str] = MIMETYPES,
-                 fallback_mimetype: str = FALLBACK_MIMETYPE,
-                 ) -> types.WSGIResponse:
+def _serve_traversable(
+        traversable: _TRAVERSABLE_LIKE_TYPE, base_prefix: str, path: str,
+        path_prefix: str, index_file: str, mimetypes: Mapping[str, str],
+        fallback_mimetype: str) -> types.WSGIResponse:
     if path != path_prefix and not path.startswith(path_prefix):
         raise ValueError("path must start with path_prefix: %r --> %r" %
                          (path_prefix, path))
     assert pathutils.sanitize_path(path) == path
-    try:
-        filesystem_path = pathutils.path_to_filesystem(
-            folder, path[len(path_prefix):].strip("/"))
-    except ValueError as e:
-        logger.debug("Web content with unsafe path %r requested: %s",
-                     path, e, exc_info=True)
-        return NOT_FOUND
-    if os.path.isdir(filesystem_path) and not path.endswith("/"):
-        return redirect(base_prefix + path + "/")
-    if os.path.isdir(filesystem_path) and index_file:
-        filesystem_path = os.path.join(filesystem_path, index_file)
-    if not os.path.isfile(filesystem_path):
+    parts_path = path[len(path_prefix):].strip('/')
+    parts = parts_path.split("/") if parts_path else []
+    for part in parts:
+        if not pathutils.is_safe_filesystem_path_component(part):
+            logger.debug("Web content with unsafe path %r requested", path)
+            return NOT_FOUND
+        if (not traversable.is_dir() or
+                all(part != entry.name for entry in traversable.iterdir())):
+            return NOT_FOUND
+        traversable = traversable.joinpath(part)
+    if traversable.is_dir():
+        if not path.endswith("/"):
+            return redirect(base_prefix + path + "/")
+        if not index_file:
+            return NOT_FOUND
+        traversable = traversable.joinpath(index_file)
+    if not traversable.is_file():
         return NOT_FOUND
     content_type = MIMETYPES.get(
-        os.path.splitext(filesystem_path)[1].lower(), FALLBACK_MIMETYPE)
-    with open(filesystem_path, "rb") as f:
-        answer = f.read()
-        last_modified = time.strftime(
+        os.path.splitext(traversable.name)[1].lower(), FALLBACK_MIMETYPE)
+    headers = {"Content-Type": content_type}
+    if isinstance(traversable, pathlib.Path):
+        headers["Last-Modified"] = time.strftime(
             "%a, %d %b %Y %H:%M:%S GMT",
-            time.gmtime(os.fstat(f.fileno()).st_mtime))
-    headers = {
-        "Content-Type": content_type,
-        "Last-Modified": last_modified}
+            time.gmtime(traversable.stat().st_mtime))
+    answer = traversable.read_bytes()
     return client.OK, headers, answer
+
+
+def serve_resource(
+        package: str, resource: str, base_prefix: str, path: str,
+        path_prefix: str = "/.web", index_file: str = "index.html",
+        mimetypes: Mapping[str, str] = MIMETYPES,
+        fallback_mimetype: str = FALLBACK_MIMETYPE) -> types.WSGIResponse:
+    if sys.version_info < (3, 9):
+        traversable = pathlib.Path(
+            pkg_resources.resource_filename(package, resource))
+    else:
+        traversable = resources.files(package).joinpath(resource)
+    return _serve_traversable(traversable, base_prefix, path, path_prefix,
+                              index_file, mimetypes, fallback_mimetype)
+
+
+def serve_folder(
+        folder: str, base_prefix: str, path: str,
+        path_prefix: str = "/.web", index_file: str = "index.html",
+        mimetypes: Mapping[str, str] = MIMETYPES,
+        fallback_mimetype: str = FALLBACK_MIMETYPE) -> types.WSGIResponse:
+    # deprecated: use `serve_resource` instead
+    traversable = pathlib.Path(folder)
+    return _serve_traversable(traversable, base_prefix, path, path_prefix,
+                              index_file, mimetypes, fallback_mimetype)

radicale/item/__init__.py

@@ -245,8 +245,8 @@ def find_available_uid(exists_fn: Callable[[str], bool], suffix: str = ""
             r[:8], r[8:12], r[12:16], r[16:20], r[20:], suffix)
         if not exists_fn(name):
             return name
-    # something is wrong with the PRNG
-    raise RuntimeError("No unique random sequence found")
+    # Something is wrong with the PRNG or `exists_fn`
+    raise RuntimeError("No available random UID found")
 
 
 def get_etag(text: str) -> str:

radicale/pathutils.py

@@ -257,6 +257,7 @@ def is_safe_filesystem_path_component(path: str) -> bool:
     """
     return (
         bool(path) and not os.path.splitdrive(path)[0] and
+        (sys.platform != "win32" or ":" not in path) and  # Block NTFS-ADS
         not os.path.split(path)[0] and path not in (os.curdir, os.pardir) and
         not path.startswith(".") and not path.endswith("~") and
         is_safe_path_component(path))

radicale/server.py

@@ -206,7 +206,7 @@ class ServerHandler(wsgiref.simple_server.ServerHandler):
     # Don't pollute WSGI environ with OS environment
     os_environ: MutableMapping[str, str] = {}
 
-    def log_exception(self, exc_info: "wsgiref.handlers._exc_info") -> None:
+    def log_exception(self, exc_info) -> None:
         logger.error("An exception occurred during request: %s",
                      exc_info[1], exc_info=exc_info)  # type:ignore[arg-type]
 

radicale/storage/__init__.py

@@ -29,7 +29,6 @@ from hashlib import sha256
 from typing import (Iterable, Iterator, Mapping, Optional, Sequence, Set,
                     Tuple, Union, overload)
 
-import pkg_resources
 import vobject
 
 from radicale import config
@@ -41,7 +40,7 @@ INTERNAL_TYPES: Sequence[str] = ("multifilesystem", "multifilesystem_nolock",)
 
 CACHE_DEPS: Sequence[str] = ("radicale", "vobject", "python-dateutil",)
 CACHE_VERSION: bytes = "".join(
-    "%s=%s;" % (pkg, pkg_resources.get_distribution(pkg).version)
+    "%s=%s;" % (pkg, utils.package_version(pkg))
     for pkg in CACHE_DEPS).encode()
 
 

radicale/storage/multifilesystem/upload.py

@@ -20,7 +20,7 @@ import errno
 import os
 import pickle
 import sys
-from typing import Iterable, Set, TextIO, cast
+from typing import Iterable, Iterator, TextIO, cast
 
 import radicale.item as radicale_item
 from radicale import pathutils
@@ -59,16 +59,24 @@ class CollectionPartUpload(CollectionPartGet, CollectionPartCache,
 
     def _upload_all_nonatomic(self, items: Iterable[radicale_item.Item],
                               suffix: str = "") -> None:
-        """Upload a new set of items.
+        """Upload a new set of items non-atomic"""
+        def is_safe_free_href(href: str) -> bool:
+            return (pathutils.is_safe_filesystem_path_component(href) and
+                    not os.path.lexists(
+                        os.path.join(self._filesystem_path, href)))
 
-        This takes a list of vobject items and
-        uploads them nonatomic and without existence checks.
+        def get_safe_free_hrefs(uid: str) -> Iterator[str]:
+            for href in [uid if uid.lower().endswith(suffix.lower())
+                         else uid + suffix,
+                         radicale_item.get_etag(uid).strip('"') + suffix]:
+                if is_safe_free_href(href):
+                    yield href
+            yield radicale_item.find_available_uid(
+                lambda href: not is_safe_free_href(href), suffix)
 
-        """
         cache_folder = os.path.join(self._filesystem_path,
                                     ".Radicale.cache", "item")
         self._storage._makedirs_synced(cache_folder)
-        hrefs: Set[str] = set()
         for item in items:
             uid = item.uid
             try:
@@ -77,39 +85,24 @@ class CollectionPartUpload(CollectionPartGet, CollectionPartCache,
                 raise ValueError(
                     "Failed to store item %r in temporary collection %r: %s" %
                     (uid, self.path, e)) from e
-            href_candidate_funtions = [
-                lambda: uid if uid.lower().endswith(suffix.lower())
-                else uid + suffix,
-                lambda: radicale_item.get_etag(uid).strip('"') + suffix,
-                lambda: radicale_item.find_available_uid(
-                    hrefs.__contains__, suffix)]
-            href = f = None
-            while href_candidate_funtions:
-                href = href_candidate_funtions.pop(0)()
-                if href in hrefs:
-                    continue
-                if not pathutils.is_safe_filesystem_path_component(href):
-                    if not href_candidate_funtions:
-                        raise pathutils.UnsafePathError(href)
-                    continue
+            for href in get_safe_free_hrefs(uid):
                 try:
-                    f = open(pathutils.path_to_filesystem(
-                        self._filesystem_path, href),
-                        "w", newline="", encoding=self._encoding)
-                    break
+                    f = open(os.path.join(self._filesystem_path, href),
+                             "w", newline="", encoding=self._encoding)
                 except OSError as e:
-                    if href_candidate_funtions and (
-                            sys.platform != "win32" and
-                            e.errno == errno.EINVAL or
+                    if (sys.platform != "win32" and e.errno == errno.EINVAL or
                             sys.platform == "win32" and e.errno == 123):
+                        # not a valid filename
                         continue
                     raise
-            assert href is not None and f is not None
+                break
+            else:
+                raise RuntimeError("No href found for item %r in temporary "
+                                   "collection %r" % (uid, self.path))
             with f:
                 f.write(item.serialize())
                 f.flush()
                 self._storage._fsync(f)
-            hrefs.add(href)
             with open(os.path.join(cache_folder, href), "wb") as fb:
                 pickle.dump(cache_content, fb)
                 fb.flush()

radicale/tests/static/event_multiple_case_sensitive_uids.ics

@@ -0,0 +1,16 @@
+BEGIN:VCALENDAR
+PRODID:-//Mozilla.org/NONSGML Mozilla Calendar V1.1//EN
+VERSION:2.0
+BEGIN:VEVENT
+UID:event
+SUMMARY:Event 1
+DTSTART:20130901T190000
+DTEND:20130901T200000
+END:VEVENT
+BEGIN:VEVENT
+UID:EVENT
+SUMMARY:Event 2
+DTSTART:20130901T200000
+DTEND:20130901T210000
+END:VEVENT
+END:VCALENDAR

radicale/tests/test_auth.py

@@ -44,16 +44,6 @@ class TestBaseAuthRequests(BaseTest):
         """Test htpasswd authentication with user "tmp" and password "bepo" for
            ``test_matrix`` "ascii" or user "😀" and password "🔑" for
            ``test_matrix`` "unicode"."""
-        if htpasswd_encryption == "bcrypt":
-            try:
-                from passlib.exc import MissingBackendError
-                from passlib.hash import bcrypt
-            except ImportError:
-                pytest.skip("passlib[bcrypt] is not installed")
-            try:
-                bcrypt.hash("test-bcrypt-backend")
-            except MissingBackendError:
-                pytest.skip("bcrypt backend for passlib is not installed")
         htpasswd_file_path = os.path.join(self.colpath, ".htpasswd")
         encoding: str = self.configuration.get("encoding", "stock")
         with open(htpasswd_file_path, "w", encoding=encoding) as f:

radicale/tests/test_base.py

@@ -243,6 +243,13 @@ permissions: RrWw""")
             for uid2 in uids[i + 1:]:
                 assert uid1 != uid2
 
+    def test_put_whole_calendar_case_sensitive_uids(self) -> None:
+        """Create a whole calendar with case-sensitive UIDs."""
+        events = get_file_content("event_multiple_case_sensitive_uids.ics")
+        self.put("/calendar.ics/", events)
+        _, answer = self.get("/calendar.ics/")
+        assert "\r\nUID:event\r\n" in answer and "\r\nUID:EVENT\r\n" in answer
+
     def test_put_whole_addressbook(self) -> None:
         """Create and overwrite a whole addressbook."""
         contacts = get_file_content("contact_multiple.vcf")

radicale/utils.py

@@ -16,12 +16,18 @@
 # You should have received a copy of the GNU General Public License
 # along with Radicale.  If not, see <http://www.gnu.org/licenses/>.
 
+import sys
 from importlib import import_module
 from typing import Callable, Sequence, Type, TypeVar, Union
 
 from radicale import config
 from radicale.log import logger
 
+if sys.version_info < (3, 8):
+    import pkg_resources
+else:
+    from importlib import metadata
+
 _T_co = TypeVar("_T_co", covariant=True)
 
 
@@ -43,3 +49,9 @@ def load_plugin(internal_types: Sequence[str], module_name: str,
                            (module_name, module, e)) from e
     logger.info("%s type is %r", module_name, module)
     return class_(configuration)
+
+
+def package_version(name):
+    if sys.version_info < (3, 8):
+        return pkg_resources.get_distribution(name).version
+    return metadata.version(name)

radicale/web/internal.py

@@ -25,9 +25,7 @@ Features:
 
 """
 
-import pkg_resources
-
-from radicale import config, httputils, types, web
+from radicale import httputils, types, web
 
 MIMETYPES = httputils.MIMETYPES  # deprecated
 FALLBACK_MIMETYPE = httputils.FALLBACK_MIMETYPE  # deprecated
@@ -35,13 +33,7 @@ FALLBACK_MIMETYPE = httputils.FALLBACK_MIMETYPE  # deprecated
 
 class Web(web.BaseWeb):
 
-    folder: str
-
-    def __init__(self, configuration: config.Configuration) -> None:
-        super().__init__(configuration)
-        self.folder = pkg_resources.resource_filename(
-            __name__, "internal_data")
-
     def get(self, environ: types.WSGIEnviron, base_prefix: str, path: str,
             user: str) -> types.WSGIResponse:
-        return httputils.serve_folder(self.folder, base_prefix, path)
+        return httputils.serve_resource("radicale.web", "internal_data",
+                                        base_prefix, path)

setup.cfg

@@ -1,13 +1,26 @@
-[aliases]
-test = pytest
-
-[bdist_wheel]
-python-tag = py3
-
 [tool:pytest]
-# More options are set in `setup.py` via environment variable `PYTEST_ADDOPTS`
-addopts = --flake8 --isort --typeguard-packages=radicale --cov --cov-report=term --cov-report=xml -r s
-norecursedirs = dist .cache .git build Radicale.egg-info .eggs venv
+addopts = --typeguard-packages=radicale
+
+[tox:tox]
+
+[testenv]
+extras = test
+deps =
+    flake8
+    isort
+    # mypy installation fails with pypy<3.9
+    mypy; implementation_name!='pypy' or python_version>='3.9'
+    types-setuptools
+    pytest-cov
+commands =
+    flake8 .
+    isort --check --diff .
+    # Run mypy if it's installed
+    python -c 'import importlib.util, subprocess, sys; \
+               importlib.util.find_spec("mypy") \
+                   and sys.exit(subprocess.run(["mypy", "."]).returncode) \
+                   or print("Skipped: mypy is not installed")'
+    pytest -r s --cov --cov-report=term --cov-report=xml .
 
 [tool:isort]
 known_standard_library = _dummy_thread,_thread,abc,aifc,argparse,array,ast,asynchat,asyncio,asyncore,atexit,audioop,base64,bdb,binascii,binhex,bisect,builtins,bz2,cProfile,calendar,cgi,cgitb,chunk,cmath,cmd,code,codecs,codeop,collections,colorsys,compileall,concurrent,configparser,contextlib,contextvars,copy,copyreg,crypt,csv,ctypes,curses,dataclasses,datetime,dbm,decimal,difflib,dis,distutils,doctest,dummy_threading,email,encodings,ensurepip,enum,errno,faulthandler,fcntl,filecmp,fileinput,fnmatch,formatter,fpectl,fractions,ftplib,functools,gc,getopt,getpass,gettext,glob,grp,gzip,hashlib,heapq,hmac,html,http,imaplib,imghdr,imp,importlib,inspect,io,ipaddress,itertools,json,keyword,lib2to3,linecache,locale,logging,lzma,macpath,mailbox,mailcap,marshal,math,mimetypes,mmap,modulefinder,msilib,msvcrt,multiprocessing,netrc,nis,nntplib,ntpath,numbers,operator,optparse,os,ossaudiodev,parser,pathlib,pdb,pickle,pickletools,pipes,pkgutil,platform,plistlib,poplib,posix,posixpath,pprint,profile,pstats,pty,pwd,py_compile,pyclbr,pydoc,queue,quopri,random,re,readline,reprlib,resource,rlcompleter,runpy,sched,secrets,select,selectors,shelve,shlex,shutil,signal,site,smtpd,smtplib,sndhdr,socket,socketserver,spwd,sqlite3,sre,sre_compile,sre_constants,sre_parse,ssl,stat,statistics,string,stringprep,struct,subprocess,sunau,symbol,symtable,sys,sysconfig,syslog,tabnanny,tarfile,telnetlib,tempfile,termios,test,textwrap,threading,time,timeit,tkinter,token,tokenize,trace,traceback,tracemalloc,tty,turtle,turtledemo,types,typing,unicodedata,unittest,urllib,uu,uuid,venv,warnings,wave,weakref,webbrowser,winreg,winsound,wsgiref,xdrlib,xml,xmlrpc,zipapp,zipfile,zipimport,zlib
@@ -17,10 +30,12 @@ known_third_party = defusedxml,passlib,pkg_resources,pytest,vobject
 # Only enable default tests (https://github.com/PyCQA/flake8/issues/790#issuecomment-812823398)
 select = E,F,W,C90,DOES-NOT-EXIST
 ignore = E121,E123,E126,E226,E24,E704,W503,W504,DOES-NOT-EXIST
+extend-exclude = build
 
 [mypy]
 ignore_missing_imports = True
 show_error_codes = True
+exclude = (^|/)build($|/)
 
 [coverage:run]
 branch = True

setup.py

@@ -1,5 +1,3 @@
-#!/usr/bin/env python3
-
 # This file is part of Radicale - CalDAV and CardDAV server
 # Copyright © 2009-2017 Guillaume Ayoub
 # Copyright © 2017-2018 Unrud <unrud@outlook.com>
@@ -17,71 +15,43 @@
 # You should have received a copy of the GNU General Public License
 # along with Radicale.  If not, see <http://www.gnu.org/licenses/>.
 
-"""
-Radicale CalDAV and CardDAV server
-==================================
-
-The Radicale Project is a CalDAV (calendar) and CardDAV (contact) server.  It
-aims to be a light solution, easy to use, easy to install, easy to configure.
-As a consequence, it requires few software dependances and is pre-configured to
-work out-of-the-box.
-
-The Radicale Project runs on most of the UNIX-like platforms (Linux, BSD,
-MacOS X) and Windows.  It is known to work with Evolution, Lightning, iPhone
-and Android clients. It is free and open-source software, released under GPL
-version 3.
-
-For further information, please visit the `Radicale Website
-<https://radicale.org/>`_.
-
-"""
-
-import os
-import sys
-
 from setuptools import find_packages, setup
 
 # When the version is updated, a new section in the CHANGELOG.md file must be
 # added too.
 VERSION = "master"
-WEB_FILES = ["web/internal_data/css/icon.png",
+
+with open("README.md", encoding="utf-8") as f:
+    long_description = f.read()
+web_files = ["web/internal_data/css/icon.png",
              "web/internal_data/css/main.css",
              "web/internal_data/fn.js",
              "web/internal_data/index.html"]
 
-setup_requires = []
-if {"pytest", "test", "ptr"}.intersection(sys.argv):
-    setup_requires.append("pytest-runner")
-tests_require = ["pytest-runner", "pytest<7", "pytest-cov", "pytest-flake8",
-                 "pytest-isort", "typeguard", "waitress"]
-os.environ["PYTEST_ADDOPTS"] = os.environ.get("PYTEST_ADDOPTS", "")
-# Mypy only supports CPython
-if sys.implementation.name == "cpython":
-    tests_require.extend(["pytest-mypy", "types-setuptools"])
-    os.environ["PYTEST_ADDOPTS"] += " --mypy"
+install_requires = ["defusedxml", "passlib", "vobject>=0.9.6",
+                    "python-dateutil>=2.7.3",
+                    "setuptools; python_version<'3.9'"]
+bcrypt_requires = ["passlib[bcrypt]", "bcrypt"]
+# typeguard requires pytest<7
+test_requires = ["pytest<7", "typeguard", "waitress", *bcrypt_requires]
 
 setup(
     name="Radicale",
     version=VERSION,
     description="CalDAV and CardDAV Server",
-    long_description=__doc__,
+    long_description=long_description,
+    long_description_content_type="text/markdown",
     author="Guillaume Ayoub",
     author_email="guillaume.ayoub@kozea.fr",
     url="https://radicale.org/",
-    download_url=("https://pypi.python.org/packages/source/R/Radicale/"
-                  "Radicale-%s.tar.gz" % VERSION),
     license="GNU GPL v3",
     platforms="Any",
     packages=find_packages(
         exclude=["*.tests", "*.tests.*", "tests.*", "tests"]),
-    package_data={"radicale": [*WEB_FILES, "py.typed"]},
+    package_data={"radicale": [*web_files, "py.typed"]},
     entry_points={"console_scripts": ["radicale = radicale.__main__:run"]},
-    install_requires=["defusedxml", "passlib", "vobject>=0.9.6",
-                      "python-dateutil>=2.7.3", "setuptools"],
-    setup_requires=setup_requires,
-    tests_require=tests_require,
-    extras_require={"test": tests_require,
-                    "bcrypt": ["passlib[bcrypt]", "bcrypt"]},
+    install_requires=install_requires,
+    extras_require={"test": test_requires, "bcrypt": bcrypt_requires},
     keywords=["calendar", "addressbook", "CalDAV", "CardDAV"],
     python_requires=">=3.6.0",
     classifiers=[