Implement external domain cert syncing

LICENSE.txt

@@ -0,0 +1,661 @@
+                    GNU AFFERO GENERAL PUBLIC LICENSE
+                       Version 3, 19 November 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 Affero General Public License is a free, copyleft license for
+software and other kinds of works, specifically designed to ensure
+cooperation with the community in the case of network server software.
+
+  The licenses for most software and other practical works are designed
+to take away your freedom to share and change the works.  By contrast,
+our General Public Licenses are 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.
+
+  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.
+
+  Developers that use our General Public Licenses protect your rights
+with two steps: (1) assert copyright on the software, and (2) offer
+you this License which gives you legal permission to copy, distribute
+and/or modify the software.
+
+  A secondary benefit of defending all users' freedom is that
+improvements made in alternate versions of the program, if they
+receive widespread use, become available for other developers to
+incorporate.  Many developers of free software are heartened and
+encouraged by the resulting cooperation.  However, in the case of
+software used on network servers, this result may fail to come about.
+The GNU General Public License permits making a modified version and
+letting the public access it on a server without ever releasing its
+source code to the public.
+
+  The GNU Affero General Public License is designed specifically to
+ensure that, in such cases, the modified source code becomes available
+to the community.  It requires the operator of a network server to
+provide the source code of the modified version running there to the
+users of that server.  Therefore, public use of a modified version, on
+a publicly accessible server, gives the public access to the source
+code of the modified version.
+
+  An older license, called the Affero General Public License and
+published by Affero, was designed to accomplish similar goals.  This is
+a different license, not a version of the Affero GPL, but Affero has
+released a new version of the Affero GPL which permits relicensing under
+this license.
+
+  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 Affero 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. Remote Network Interaction; Use with the GNU General Public License.
+
+  Notwithstanding any other provision of this License, if you modify the
+Program, your modified version must prominently offer all users
+interacting with it remotely through a computer network (if your version
+supports such interaction) an opportunity to receive the Corresponding
+Source of your version by providing access to the Corresponding Source
+from a network server at no charge, through some standard or customary
+means of facilitating copying of software.  This Corresponding Source
+shall include the Corresponding Source for any work covered by version 3
+of the GNU General Public License that is incorporated pursuant to the
+following paragraph.
+
+  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 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 work with which it is combined will remain governed by version
+3 of the GNU General Public License.
+
+  14. Revised Versions of this License.
+
+  The Free Software Foundation may publish revised and/or new versions of
+the GNU Affero 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 Affero 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 Affero 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 Affero 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 Affero 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 Affero General Public License for more details.
+
+    You should have received a copy of the GNU Affero 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 your software can interact with users remotely through a computer
+network, you should also make sure that it provides a way for users to
+get its source.  For example, if your program is a web application, its
+interface could display a "Source" link that leads users to an archive
+of the code.  There are many ways you could offer source, and different
+solutions will be better for different programs; see section 13 for the
+specific requirements.
+
+  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 AGPL, see
+<https://www.gnu.org/licenses/>.

README.md

@@ -118,6 +118,16 @@ domain:
       # http_url is set.
       #https_disabled: false
 
+  # External domains will have a TLS key/cert generated and signed for them, but
+  # which will not be served by domani itself. The key/cert files will be placed
+  # in the configured paths.
+  #
+  # HTTPS must be enabled for external_domains to be used.
+  #external_domains:
+    #example.com
+    #  tls_key_path: /dir/path/key.pem
+    #  tls_cert_path: /dir/path/cert.pem
+
 service:
 
   # Passphrase which must be given by users who are configuring new domains via

src/domain/acme.rs

@@ -1,2 +1,3 @@
+pub mod account_key_store;
 pub mod manager;
 pub mod store;

src/domain/acme/account_key_store.rs

@@ -0,0 +1,86 @@
+use std::io::{Read, Write};
+use std::{fs, path};
+
+use crate::domain::tls::PrivateKey;
+use crate::error::unexpected::{self, Mappable};
+use crate::util;
+
+#[mockall::automock]
+pub trait Store {
+    fn set(&self, k: &PrivateKey) -> Result<(), unexpected::Error>;
+    fn get(&self) -> unexpected::Result<Option<PrivateKey>>;
+}
+
+pub struct FSStore {
+    dir_path: path::PathBuf,
+}
+
+impl FSStore {
+    pub fn new(dir_path: &path::Path) -> Result<Self, unexpected::Error> {
+        fs::create_dir_all(dir_path).or_unexpected()?;
+        Ok(Self {
+            dir_path: dir_path.into(),
+        })
+    }
+
+    fn account_key_path(&self) -> path::PathBuf {
+        self.dir_path.join("account.key")
+    }
+}
+
+impl Store for FSStore {
+    fn set(&self, k: &PrivateKey) -> Result<(), unexpected::Error> {
+        let path = self.account_key_path();
+        {
+            let mut file = fs::File::create(&path).or_unexpected_while("creating file")?;
+            file.write_all(k.to_string().as_bytes())
+                .or_unexpected_while("writing file")
+        }
+        .map_unexpected_while(|| format!("path is {}", path.display()))?;
+        Ok(())
+    }
+
+    fn get(&self) -> unexpected::Result<Option<PrivateKey>> {
+        let path = self.account_key_path();
+        {
+            let mut file =
+                match util::open_file(path.as_path()).or_unexpected_while("opening_file")? {
+                    Some(file) => file,
+                    None => return Ok(None),
+                };
+
+            let mut key = String::new();
+            file.read_to_string(&mut key)
+                .or_unexpected_while("reading file")?;
+
+            let key: PrivateKey = key.parse().or_unexpected_while("parsing private key")?;
+
+            unexpected::Result::<Option<PrivateKey>>::Ok(Some(key))
+        }
+        .map_unexpected_while(|| format!("path is {}", path.display()))
+    }
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+    use crate::domain::tls;
+    use tempdir::TempDir;
+
+    #[test]
+    fn account_key() {
+        let tmp_dir = TempDir::new("domain_acme_account_key_store").unwrap();
+        let store = FSStore::new(tmp_dir.path()).expect("store created");
+
+        assert!(matches!(
+            store.get(),
+            unexpected::Result::<Option<PrivateKey>>::Ok(None)
+        ));
+
+        let k = tls::PrivateKey::new();
+
+        store.set(&k).expect("account private key set");
+
+        assert_eq!(Some(k), store.get().expect("account private key retrieved"));
+    }
+}

src/domain/acme/manager.rs

@@ -1,8 +1,8 @@
 use std::{sync, time};
 
 use crate::domain::acme;
-use crate::domain::tls::{Certificate, PrivateKey};
+use crate::domain::tls::{Certificate, CertificateChain, PrivateKey};
-use crate::error::unexpected::{self, Intoable, Mappable};
+use crate::error::unexpected::{self, Mappable};
 use crate::{domain, token, util};
 
 const LETS_ENCRYPT_URL: &str = "https://acme-v02.api.letsencrypt.org/directory";
@@ -16,39 +16,53 @@ pub enum GetHttp01ChallengeKeyError {
     Unexpected(#[from] unexpected::Error),
 }
 
-pub type GetCertificateError = acme::store::GetCertificateError;
-
 #[mockall::automock]
 pub trait Manager {
     fn sync_domain<'mgr>(
         &'mgr self,
         domain: domain::Name,
-    ) -> util::BoxFuture<'mgr, Result<(), unexpected::Error>>;
+        external_config: Option<domain::ConfigExternalDomain>,
+    ) -> util::BoxFuture<'mgr, unexpected::Result<()>>;
 
     fn get_http01_challenge_key(&self, token: &str) -> Result<String, GetHttp01ChallengeKeyError>;
 
-    /// Returned vec is guaranteed to have len > 0
     fn get_certificate(
         &self,
         domain: &str,
-    ) -> Result<(PrivateKey, Vec<Certificate>), GetCertificateError>;
+    ) -> unexpected::Result<Option<(PrivateKey, CertificateChain)>>;
 }
 
 pub struct ManagerImpl {
     store: Box<dyn acme::store::Store + Send + Sync>,
     token_store: Box<dyn token::Store + Send + Sync>,
     account: sync::Arc<acme2::Account>,
+    external_store_fn: Box<
+        dyn Fn(
+                &domain::ConfigExternalDomain,
+            ) -> unexpected::Result<Box<dyn acme::store::Store + Send + Sync>>
+            + Send
+            + Sync,
+    >,
 }
 
 impl ManagerImpl {
-    pub async fn new<AcmeStore, TokenStore>(
+    pub async fn new<ExternalAcmeStoreFn, AcmeStore, TokenStore, AccountKeyStore>(
         store: AcmeStore,
         token_store: TokenStore,
+        account_key_store: AccountKeyStore,
+        external_store_fn: ExternalAcmeStoreFn,
         config: &domain::ConfigACME,
-    ) -> Result<Self, unexpected::Error>
+    ) -> unexpected::Result<Self>
     where
+        ExternalAcmeStoreFn: Fn(
+                &domain::ConfigExternalDomain,
+            ) -> unexpected::Result<Box<dyn acme::store::Store + Send + Sync>>
+            + Send
+            + Sync
+            + 'static,
         AcmeStore: acme::store::Store + Send + Sync + 'static,
         TokenStore: token::Store + Send + Sync + 'static,
+        AccountKeyStore: acme::account_key_store::Store + Send + Sync + 'static,
     {
         let dir = acme2::DirectoryBuilder::new(LETS_ENCRYPT_URL.to_string())
             .build()
@@ -62,18 +76,15 @@ impl ManagerImpl {
         builder.contact(vec![contact]);
         builder.terms_of_service_agreed(true);
 
-        match store.get_account_key() {
+        if let Some(account_key) = account_key_store
-            Ok(account_key) => {
+            .get()
-                builder.private_key(
+            .or_unexpected_while("fetching account key")?
-                    (&account_key)
+        {
-                        .try_into()
+            builder.private_key(
-                        .or_unexpected_while("parsing private key")?,
+                (&account_key)
-                );
+                    .try_into()
-            }
+                    .or_unexpected_while("parsing private key")?,
-            Err(acme::store::GetAccountKeyError::NotFound) => (),
+            );
-            Err(acme::store::GetAccountKeyError::Unexpected(err)) => {
-                return Err(err.into_unexpected())
-            }
         }
 
         let account = builder
@@ -87,14 +98,15 @@ impl ManagerImpl {
             .try_into()
             .or_unexpected_while("parsing private key back out")?;
 
-        store
+        account_key_store
-            .set_account_key(&account_key)
+            .set(&account_key)
             .or_unexpected_while("storing account key")?;
 
         Ok(Self {
             store: Box::from(store),
             token_store: Box::from(token_store),
             account,
+            external_store_fn: Box::from(external_store_fn),
         })
     }
 }
@@ -103,16 +115,26 @@ impl Manager for ManagerImpl {
     fn sync_domain<'mgr>(
         &'mgr self,
         domain: domain::Name,
+        external_config: Option<domain::ConfigExternalDomain>,
     ) -> util::BoxFuture<'mgr, Result<(), unexpected::Error>> {
         Box::pin(async move {
+            let external_store;
+            let store = match external_config {
+                None => &self.store,
+                Some(config) => {
+                    external_store = (self.external_store_fn)(&config).or_unexpected()?;
+                    &external_store
+                }
+            };
+
             // if there's an existing cert, and its expiry (determined by the soonest value of
             // not_after amongst its parts) is later than 30 days from now, then we consider it to
             // be synced.
-            if let Ok((_, cert)) = self.store.get_certificate(domain.as_str()) {
+            if let Ok(Some((_, certs))) = store.get_certificate(domain.as_str()) {
                 let thirty_days = openssl::asn1::Asn1Time::days_from_now(30)
                     .expect("parsed thirty days from now as Asn1Time");
 
-                let cert_with_soonest_not_after = cert
+                let cert_with_soonest_not_after = certs
                     .into_iter()
                     .map(|cert| openssl::x509::X509::try_from(&cert))
                     .try_collect::<Vec<openssl::x509::X509>>()
@@ -280,7 +302,7 @@ impl Manager for ManagerImpl {
 
             // Download the certificate, and panic if it doesn't exist.
             log::info!("Fetching certificate for domain {}", domain.as_str());
-            let cert = order
+            let certs = order
                 .certificate()
                 .await
                 .or_unexpected_while("fetching certificate")?
@@ -292,19 +314,19 @@ impl Manager for ManagerImpl {
                 .try_collect::<Vec<Certificate>>()
                 .or_unexpected_while("parsing certificate")?;
 
-            if cert.len() <= 1 {
+            if certs.len() <= 1 {
                 return Err(unexpected::Error::from(
                     format!(
                         "expected more than one certificate to be returned, instead got {}",
-                        cert.len(),
+                        certs.len(),
                     )
                     .as_str(),
                 ));
             }
 
             log::info!("Certificate for {} successfully retrieved", domain.as_str());
-            self.store
+            store
-                .set_certificate(domain.as_str(), pkey, cert)
+                .set_certificate(domain.as_str(), pkey, certs.into())
                 .or_unexpected_while("storing new cert")?;
 
             Ok(())
@@ -323,7 +345,7 @@ impl Manager for ManagerImpl {
     fn get_certificate(
         &self,
         domain: &str,
-    ) -> Result<(PrivateKey, Vec<Certificate>), GetCertificateError> {
+    ) -> unexpected::Result<Option<(PrivateKey, CertificateChain)>> {
         self.store.get_certificate(domain)
     }
 }

src/domain/acme/store.rs

@@ -1,193 +1,24 @@
-use std::io::{Read, Write};
+mod json_fs_store;
-use std::str::FromStr;
+pub use json_fs_store::*;
-use std::{fs, path};
 
-use crate::domain::tls::{Certificate, PrivateKey};
+mod direct_fs_store;
-use crate::error::unexpected::{self, Mappable};
+pub use direct_fs_store::*;
-use crate::util;
 
-use serde::{Deserialize, Serialize};
+use crate::domain::tls::{CertificateChain, PrivateKey};
-
+use crate::error::unexpected;
-#[derive(thiserror::Error, Debug)]
-pub enum GetAccountKeyError {
-    #[error("not found")]
-    NotFound,
-
-    #[error(transparent)]
-    Unexpected(#[from] unexpected::Error),
-}
-
-#[derive(thiserror::Error, Debug)]
-pub enum GetCertificateError {
-    #[error("not found")]
-    NotFound,
-
-    #[error(transparent)]
-    Unexpected(#[from] unexpected::Error),
-}
 
 #[mockall::automock]
 pub trait Store {
-    fn set_account_key(&self, k: &PrivateKey) -> Result<(), unexpected::Error>;
-    fn get_account_key(&self) -> Result<PrivateKey, GetAccountKeyError>;
-
     fn set_certificate(
         &self,
         domain: &str,
         key: PrivateKey,
-        cert: Vec<Certificate>,
+        cert: CertificateChain,
     ) -> Result<(), unexpected::Error>;
 
-    /// Returned vec is guaranteed to have len > 0
+    /// Returned chain is guaranteed to have len > 0
     fn get_certificate(
         &self,
         domain: &str,
-    ) -> Result<(PrivateKey, Vec<Certificate>), GetCertificateError>;
+    ) -> unexpected::Result<Option<(PrivateKey, CertificateChain)>>;
-}
-
-#[derive(Debug, Serialize, Deserialize)]
-struct StoredPKeyCert {
-    private_key: PrivateKey,
-    cert: Vec<Certificate>,
-}
-
-pub struct FSStore {
-    dir_path: path::PathBuf,
-}
-
-impl FSStore {
-    pub fn new(dir_path: &path::Path) -> Result<Self, unexpected::Error> {
-        vec![
-            dir_path,
-            dir_path.join("http01_challenge_keys").as_ref(),
-            dir_path.join("certificates").as_ref(),
-        ]
-        .iter()
-        .map(|dir| {
-            fs::create_dir_all(dir)
-                .map_unexpected_while(|| format!("creating dir {}", dir.display()))
-        })
-        .try_collect()?;
-
-        Ok(Self {
-            dir_path: dir_path.into(),
-        })
-    }
-
-    fn account_key_path(&self) -> path::PathBuf {
-        self.dir_path.join("account.key")
-    }
-
-    fn certificate_path(&self, domain: &str) -> path::PathBuf {
-        let mut domain = domain.to_string();
-        domain.push_str(".json");
-
-        self.dir_path.join("certificates").join(domain)
-    }
-}
-
-impl Store for FSStore {
-    fn set_account_key(&self, k: &PrivateKey) -> Result<(), unexpected::Error> {
-        let path = self.account_key_path();
-        {
-            let mut file = fs::File::create(&path).or_unexpected_while("creating file")?;
-            file.write_all(k.to_string().as_bytes())
-                .or_unexpected_while("writing file")
-        }
-        .map_unexpected_while(|| format!("path is {}", path.display()))?;
-        Ok(())
-    }
-
-    fn get_account_key(&self) -> Result<PrivateKey, GetAccountKeyError> {
-        let path = self.account_key_path();
-        {
-            let mut file =
-                match util::open_file(path.as_path()).or_unexpected_while("opening_file")? {
-                    Some(file) => file,
-                    None => return Err(GetAccountKeyError::NotFound),
-                };
-
-            let mut key = String::new();
-            file.read_to_string(&mut key)
-                .or_unexpected_while("reading file")?;
-
-            let key = PrivateKey::from_str(&key).or_unexpected_while("parsing private key")?;
-
-            Ok::<PrivateKey, unexpected::Error>(key)
-        }
-        .map_unexpected_while(|| format!("path is {}", path.display()))
-        .map_err(|err| err.into())
-    }
-
-    fn set_certificate(
-        &self,
-        domain: &str,
-        key: PrivateKey,
-        cert: Vec<Certificate>,
-    ) -> Result<(), unexpected::Error> {
-        let to_store = StoredPKeyCert {
-            private_key: key,
-            cert,
-        };
-
-        let path = self.certificate_path(domain);
-        {
-            let cert_file =
-                fs::File::create(path.as_path()).or_unexpected_while("creating file")?;
-            serde_json::to_writer(cert_file, &to_store).or_unexpected_while("writing cert to file")
-        }
-        .map_unexpected_while(|| format!("path is {}", path.display()))
-    }
-
-    fn get_certificate(
-        &self,
-        domain: &str,
-    ) -> Result<(PrivateKey, Vec<Certificate>), GetCertificateError> {
-        let path = self.certificate_path(domain);
-        {
-            let file = match util::open_file(path.as_path()).or_unexpected_while("opening_file")? {
-                Some(file) => file,
-                None => return Err(GetCertificateError::NotFound),
-            };
-
-            let stored: StoredPKeyCert =
-                serde_json::from_reader(file).or_unexpected_while("parsing json")?;
-
-            Ok::<(PrivateKey, Vec<Certificate>), unexpected::Error>((
-                stored.private_key,
-                stored.cert,
-            ))
-        }
-        .map_unexpected_while(|| format!("path is {}", path.display()))
-        .map_err(|err| err.into())
-    }
-}
-
-#[cfg(test)]
-mod tests {
-    use super::*;
-    use crate::domain::tls;
-    use tempdir::TempDir;
-
-    #[test]
-    fn account_key() {
-        let tmp_dir = TempDir::new("domain_acme_store_account_key").unwrap();
-        let store = FSStore::new(tmp_dir.path()).expect("store created");
-
-        assert!(matches!(
-            store.get_account_key(),
-            Err::<PrivateKey, GetAccountKeyError>(GetAccountKeyError::NotFound)
-        ));
-
-        let k = tls::PrivateKey::new();
-
-        store.set_account_key(&k).expect("account private key set");
-
-        assert_eq!(
-            k,
-            store
-                .get_account_key()
-                .expect("account private key retrieved")
-        );
-    }
 }

src/domain/acme/store/direct_fs_store.rs

@@ -0,0 +1,70 @@
+use std::{fs, path};
+
+use crate::domain::tls::{CertificateChain, PrivateKey};
+use crate::error::unexpected::{self, Mappable};
+use crate::util;
+
+pub struct DirectFSStore {
+    key_file_path: path::PathBuf,
+    cert_file_path: path::PathBuf,
+}
+
+impl DirectFSStore {
+    pub fn new( key_file_path: &path::Path, cert_file_path: &path::Path,) -> Self {
+        Self {
+            key_file_path: key_file_path.into(),
+            cert_file_path: cert_file_path.into(),
+        }
+    }
+}
+
+impl super::Store for DirectFSStore {
+    fn set_certificate(
+        &self,
+        _domain: &str,
+        key: PrivateKey,
+        cert: CertificateChain,
+    ) -> unexpected::Result<()> {
+        fs::write(&self.key_file_path, key.to_string()).map_unexpected_while(|| {
+            format!("writing private key to {}", &self.key_file_path.display())
+        })?;
+
+        fs::write(&self.cert_file_path, cert.to_string()).map_unexpected_while(|| {
+            format!("writing certificate to {}", &self.cert_file_path.display())
+        })?;
+
+        Ok(())
+    }
+
+    fn get_certificate(
+        &self,
+        _domain: &str,
+    ) -> unexpected::Result<Option<(PrivateKey, CertificateChain)>> {
+        let key: Option<PrivateKey> =
+            util::parse_file(&self.key_file_path).map_unexpected_while(|| {
+                format!("reading private key from {}", &self.key_file_path.display())
+            })?;
+
+        let certs: Option<CertificateChain> = util::parse_file(&self.cert_file_path)
+            .map_unexpected_while(|| {
+                format!(
+                    "reading certificate from {}",
+                    &self.cert_file_path.display()
+                )
+            })?;
+
+        if key.is_none() != certs.is_none() {
+        }
+
+        match (key, certs) {
+        (None, None) => Ok(None),
+        (Some(key), Some(certs)) => Ok(Some((key, certs))),
+        _ => 
+            Err(unexpected::Error::from(format!(
+                    "private key file {} and cert file {} are in inconsistent state, one exists but the other doesn't",
+                    &self.key_file_path.display(),
+                    &self.cert_file_path.display(),
+            ).as_str()))
+        }
+    }
+}

src/domain/acme/store/json_fs_store.rs

@@ -0,0 +1,78 @@
+use std::{fs, path};
+
+use crate::domain::tls::{Certificate, CertificateChain, PrivateKey};
+use crate::error::unexpected::{self, Mappable};
+use crate::util;
+
+use serde::{Deserialize, Serialize};
+
+#[derive(Debug, Serialize, Deserialize)]
+struct StoredPKeyCert {
+    private_key: PrivateKey,
+    cert: Vec<Certificate>,
+}
+
+pub struct JSONFSStore {
+    dir_path: path::PathBuf,
+}
+
+impl JSONFSStore {
+    pub fn new(dir_path: &path::Path) -> unexpected::Result<Self> {
+        fs::create_dir_all(dir_path).or_unexpected()?;
+        Ok(Self {
+            dir_path: dir_path.into(),
+        })
+    }
+
+    fn certificate_path(&self, domain: &str) -> path::PathBuf {
+        let mut domain = domain.to_string();
+        domain.push_str(".json");
+
+        self.dir_path.join(domain)
+    }
+}
+
+impl super::Store for JSONFSStore {
+    fn set_certificate(
+        &self,
+        domain: &str,
+        key: PrivateKey,
+        certs: CertificateChain,
+    ) -> Result<(), unexpected::Error> {
+        let to_store = StoredPKeyCert {
+            private_key: key,
+            cert: certs.into(),
+        };
+
+        let path = self.certificate_path(domain);
+        {
+            let cert_file =
+                fs::File::create(path.as_path()).or_unexpected_while("creating file")?;
+            serde_json::to_writer(cert_file, &to_store).or_unexpected_while("writing cert to file")
+        }
+        .map_unexpected_while(|| format!("path is {}", path.display()))
+    }
+
+    fn get_certificate(
+        &self,
+        domain: &str,
+    ) -> unexpected::Result<Option<(PrivateKey, CertificateChain)>> {
+        let path = self.certificate_path(domain);
+        {
+            let file = match util::open_file(path.as_path()).or_unexpected_while("opening_file")? {
+                Some(file) => file,
+                None => return Ok(None),
+            };
+
+            let stored: StoredPKeyCert =
+                serde_json::from_reader(file).or_unexpected_while("parsing json")?;
+
+            unexpected::Result::<Option<(PrivateKey, CertificateChain)>>::Ok(Some((
+                stored.private_key,
+                stored.cert.into(),
+            )))
+        }
+        .map_unexpected_while(|| format!("path is {}", path.display()))
+        .map_err(|err| err.into())
+    }
+}

src/domain/config.rs

@@ -58,6 +58,13 @@ pub struct ConfigProxiedDomain {
     pub https_disabled: bool,
 }
 
+#[serde_as]
+#[derive(Clone, Deserialize, Serialize)]
+pub struct ConfigExternalDomain {
+    pub tls_key_path: path::PathBuf,
+    pub tls_cert_path: path::PathBuf,
+}
+
 #[derive(Clone, Deserialize, Serialize)]
 pub struct Config {
     pub store_dir_path: path::PathBuf,
@@ -73,4 +80,7 @@ pub struct Config {
 
     #[serde(default = "default_interface_domain")]
     pub interface_domain: Option<domain::Name>,
+
+    #[serde(default)]
+    pub external_domains: collections::HashMap<domain::Name, ConfigExternalDomain>,
 }

src/domain/manager.rs

@@ -10,6 +10,7 @@ pub enum GetSettingsResult {
     Builtin(domain::config::ConfigBuiltinDomain),
     Proxied(domain::config::ConfigProxiedDomain),
     Interface,
+    External(domain::config::ConfigExternalDomain),
 }
 
 #[derive(thiserror::Error, Debug)]
@@ -222,7 +223,22 @@ impl ManagerImpl {
     async fn sync_domain_https_cert(&self, domain: &domain::Name) -> unexpected::Result<()> {
         if let Some(ref acme_manager) = self.acme_manager {
             log::info!("Syncing HTTPS certificate for domain {domain}");
-            acme_manager.sync_domain(domain.clone()).await?;
+            acme_manager.sync_domain(domain.clone(), None).await?;
+        }
+
+        Ok(())
+    }
+
+    async fn sync_external_domain(
+        &self,
+        domain: &domain::Name,
+        config: &domain::ConfigExternalDomain,
+    ) -> unexpected::Result<()> {
+        if let Some(ref acme_manager) = self.acme_manager {
+            log::info!("Syncing HTTPS certificate for external domain {domain}");
+            acme_manager
+                .sync_domain(domain.clone(), Some(config.clone()))
+                .await?;
         }
 
         Ok(())
@@ -247,6 +263,14 @@ impl ManagerImpl {
                 GetSettingsResult::Proxied(config) => (None, !config.https_disabled, false),
 
                 GetSettingsResult::Interface => (None, true, false),
+
+                // External domains do their own thing, separate from the rest of this flow.
+                GetSettingsResult::External(config) => {
+                    self.sync_external_domain(&domain, &config)
+                        .await
+                        .map_unexpected_while(|| format!("syncing external domain {domain}"))?;
+                    continue;
+                }
             };
 
             if let Some(settings) = settings {
@@ -301,6 +325,10 @@ impl Manager for ManagerImpl {
             return Ok(GetSettingsResult::Proxied(config.clone()));
         }
 
+        if let Some(config) = self.config.external_domains.get(domain) {
+            return Ok(GetSettingsResult::External(config.clone()));
+        }
+
         Ok(GetSettingsResult::Stored(self.domain_store.get(domain)?))
     }
 
@@ -322,6 +350,9 @@ impl Manager for ManagerImpl {
                     unexpected::Error::from("can't call get_file on interface domain").into(),
                 );
             }
+            GetSettingsResult::External(_) => {
+                return Err(GetFileError::DomainNotFound);
+            }
         };
 
         let path = settings.process_path(path);
@@ -342,8 +373,9 @@ impl Manager for ManagerImpl {
             let is_interface = Some(&domain) == self.config.interface_domain.as_ref();
             let is_builtin = self.config.builtin_domains.contains_key(&domain);
             let is_proxied = self.config.proxied_domains.contains_key(&domain);
+            let is_external = self.config.external_domains.contains_key(&domain);
 
-            if is_interface || is_builtin || is_proxied {
+            if is_interface || is_builtin || is_proxied || is_external {
                 return Err(SyncWithSettingsError::NotModifiable);
             }
 
@@ -422,6 +454,15 @@ impl Manager for ManagerImpl {
             })
         }
 
+        self.config
+            .external_domains
+            .iter()
+            .map(|(domain, _)| ManagedDomain {
+                domain: domain.clone(),
+                public: false,
+            })
+            .collect_into(&mut res);
+
         Ok(res)
     }
 }
@@ -442,12 +483,12 @@ impl rustls::server::ResolvesServerCert for HttpsCertResolver {
         let domain = client_hello.server_name()?;
 
         match (self.0).acme_manager.as_ref()?.get_certificate(domain) {
-            Err(acme::manager::GetCertificateError::NotFound) => {
+            Err(err) => Err(err),
+            Ok(None) => {
                 log::warn!("No cert found for domain {domain}");
                 Ok(None)
             }
-            Err(acme::manager::GetCertificateError::Unexpected(err)) => Err(err),
+            Ok(Some((key, cert))) => {
-            Ok((key, cert)) => {
                 match rustls::sign::any_supported_type(&key.into()).or_unexpected() {
                     Err(err) => Err(err),
                     Ok(key) => Ok(Some(sync::Arc::new(rustls::sign::CertifiedKey {

src/domain/tls.rs

@@ -2,4 +2,4 @@ mod private_key;
 pub use self::private_key::PrivateKey;
 
 mod certificate;
-pub use self::certificate::Certificate;
+pub use self::certificate::{Certificate, CertificateChain};

src/domain/tls/certificate.rs

@@ -113,3 +113,47 @@ impl From<Certificate> for rustls::Certificate {
         rustls::Certificate(c.0)
     }
 }
+
+pub struct CertificateChain(Vec<Certificate>);
+
+impl FromStr for CertificateChain {
+    type Err = pem::PemError;
+
+    fn from_str(s: &str) -> Result<Self, Self::Err> {
+        Ok(CertificateChain(
+            pem::parse_many(s)?
+                .into_iter()
+                .map(|s| Certificate(s.into_contents()))
+                .collect(),
+        ))
+    }
+}
+
+impl fmt::Display for CertificateChain {
+    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
+        for cert in &self.0 {
+            pem::Pem::new("CERTIFICATE", cert.0.clone()).fmt(f)?;
+        }
+        Ok(())
+    }
+}
+
+impl From<CertificateChain> for Vec<Certificate> {
+    fn from(c: CertificateChain) -> Self {
+        c.0
+    }
+}
+
+impl From<Vec<Certificate>> for CertificateChain {
+    fn from(v: Vec<Certificate>) -> Self {
+        Self(v)
+    }
+}
+
+impl std::iter::IntoIterator for CertificateChain {
+    type Item = Certificate;
+    type IntoIter = std::vec::IntoIter<Self::Item>;
+    fn into_iter(self) -> Self::IntoIter {
+        self.0.into_iter()
+    }
+}

src/main.rs

@@ -77,6 +77,10 @@ async fn main() {
             }
         }
 
+        if config.domain.external_domains.len() > 0 && config.service.http.https_addr.is_none() {
+            panic!("https must be enabled to use external_domains")
+        }
+
         config
     };
 
@@ -109,14 +113,39 @@ async fn main() {
             .clone()
             .expect("acme configuration must be set if https is enabled");
 
-        let domain_acme_store =
+        let acme_dir_path = config.domain.store_dir_path.join("acme");
-            domani::domain::acme::store::FSStore::new(&config.domain.store_dir_path.join("acme"))
+
-                .expect("domain acme store initialization failed");
+        let domain_acme_store = {
+            let dir_path = acme_dir_path.join("certificates");
+            domani::domain::acme::store::JSONFSStore::new(&dir_path).unwrap_or_else(|e| {
+                panic!(
+                    "failed to initialize acme cert store at {}: {e}",
+                    dir_path.display()
+                )
+            })
+        };
+
+        let domain_acme_account_key_store = domani::domain::acme::account_key_store::FSStore::new(
+            &acme_dir_path,
+        )
+        .unwrap_or_else(|e| {
+            panic!(
+                "failed to initialize account key store at {}: {e}",
+                acme_dir_path.display()
+            )
+        });
 
         Some(
             domani::domain::acme::manager::ManagerImpl::new(
                 domain_acme_store,
                 domani::token::MemStore::new(),
+                domain_acme_account_key_store,
+                |config| {
+                    Ok(Box::from(domani::domain::acme::store::DirectFSStore::new(
+                        &config.tls_key_path,
+                        &config.tls_cert_path,
+                    )))
+                },
                 &acme_config,
             )
             .await

src/service/http.rs

@@ -238,6 +238,7 @@ impl Service {
             }
             Ok(domain::manager::GetSettingsResult::Proxied(_)) => None,
             Ok(domain::manager::GetSettingsResult::Interface) => None,
+            Ok(domain::manager::GetSettingsResult::External(_)) => None,
             Err(domain::manager::GetSettingsError::NotFound) => None,
             Err(domain::manager::GetSettingsError::Unexpected(e)) => {
                 return self.internal_error(

src/util.rs

@@ -10,6 +10,27 @@ pub fn open_file(path: &path::Path) -> io::Result<Option<fs::File>> {
     }
 }
 
+#[derive(thiserror::Error, Debug)]
+pub enum ParseFileError<ParseError> {
+    #[error("io error: {0}")]
+    IO(io::Error),
+
+    #[error("parse error")]
+    FromStr(ParseError),
+}
+
+pub fn parse_file<T: std::str::FromStr>(
+    path: &path::Path,
+) -> Result<Option<T>, ParseFileError<T::Err>> {
+    match fs::read_to_string(path) {
+        Ok(s) => Ok(Some(s.parse().map_err(|e| ParseFileError::FromStr(e))?)),
+        Err(err) => match err.kind() {
+            io::ErrorKind::NotFound => Ok(None),
+            _ => Err(ParseFileError::IO(err)),
+        },
+    }
+}
+
 pub type BoxByteStream = futures::stream::BoxStream<'static, io::Result<bytes::Bytes>>;
 
 pub type BoxFuture<'a, O> = pin::Pin<Box<dyn futures::Future<Output = O> + Send + 'a>>;