.rpm/vpncloud.spec

@@ -27,7 +27,6 @@ mkdir -p %{buildroot}/lib/systemd/system
 mkdir -p %{buildroot}/usr/share/man/man1
 cp %{buildroot}/../../../../../assets/example.net.disabled %{buildroot}/etc/vpncloud/example.net.disabled
 cp %{buildroot}/../../../../../assets/vpncloud@.service %{buildroot}/lib/systemd/system/vpncloud@.service
-cp %{buildroot}/../../../../../assets/vpncloud-wsproxy.service %{buildroot}/lib/systemd/system/vpncloud-wsproxy.service
 cp %{buildroot}/../../../../../target/vpncloud.1.gz %{buildroot}/usr/share/man/man1/vpncloud.1.gz
 cp -a * %{buildroot}
 
@@ -39,7 +38,6 @@ rm -rf %{buildroot}
 /etc/vpncloud/example.net.disabled
 /usr/bin/vpncloud
 /lib/systemd/system/vpncloud@.service
-/lib/systemd/system/vpncloud-wsproxy.service
 /usr/share/man/man1/vpncloud.1.gz
 
 %defattr(-,root,root,-)

Cargo.lock

@@ -374,12 +374,6 @@ version = "1.3.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "615caabe2c3160b313d52ccc905335f4ed5f10881dd63dc5699d47e90be85691"
 
-[[package]]
-name = "iai"
-version = "0.1.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "71a816c97c42258aa5834d07590b718b4c9a598944cd39a52dc25b351185d678"
-
 [[package]]
 name = "idna"
 version = "0.2.1"
@@ -1231,7 +1225,6 @@ dependencies = [
  "criterion",
  "daemonize",
  "fnv",
- "iai",
  "igd",
  "libc",
  "log",

Cargo.toml

@@ -35,7 +35,6 @@ url = { version = "2.2", optional = true }
 [dev-dependencies]
 tempfile = "3"
 criterion = { version = "0.3", features = ["html_reports"] }
-iai = "0.1"
 
 [features]
 default = ["nat", "websocket"]
@@ -43,11 +42,7 @@ nat = ["igd"]
 websocket = ["tungstenite", "url"]
 
 [[bench]]
-name = "criterion"
+name = "bench"
-harness = false
-
-[[bench]]
-name = "valgrind"
 harness = false
 
 [profile.release]
@@ -74,7 +69,6 @@ assets = [
   ["target/release/vpncloud", "/usr/bin/vpncloud", "755"],
   ["assets/example.net.disabled", "/etc/vpncloud/example.net.disabled", "600"],
   ["assets/vpncloud@.service", "/lib/systemd/system/vpncloud@.service", "644"],
-  ["assets/vpncloud-wsproxy.service", "/lib/systemd/system/vpncloud-wsproxy.service", "644"],
   ["target/vpncloud.1.gz", "/usr/share/man/man1/vpncloud.1.gz", "644"]
 ]
 

LICENSE.md

@@ -1,7 +1,7 @@
 # License: GPL-3
 
 VpnCloud - Peer-to-Peer VPN
-Copyright (C) 2015-2021  Dennis Schwerdel
+Copyright (C) 2015-2020  Dennis Schwerdel
 
 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
@@ -15,19 +15,22 @@ GNU General Public License for more details.
 
 Full license text follows.
 
-### Preamble
+
+
+
+                            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
+the GNU General Public License is intended to guarantee your freedom to
-to share and change all versions of a program--to make sure it remains
+share and change all versions of a program--to make sure it remains free
-free software for all its users. We, the Free Software Foundation, use
+software for all its users.  We, the Free Software Foundation, use the
-the GNU General Public License for most of our software; it applies
+GNU General Public License for most of our software; it applies also to
-also to any other work released this way by its authors. You can apply
+any other work released this way by its authors.  You can apply it to
-it to your programs, too.
+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
@@ -37,10 +40,9 @@ 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
+these rights or asking you to surrender the rights.  Therefore, you have
-have certain responsibilities if you distribute copies of the
+certain responsibilities if you distribute copies of the software, or if
-software, or if you modify it: responsibilities to respect the freedom
+you modify it: responsibilities to respect the freedom of others.
-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
@@ -59,44 +61,43 @@ 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
+modified versions of the software inside them, although the manufacturer
-manufacturer can do so. This is fundamentally incompatible with the
+can do so.  This is fundamentally incompatible with the aim of
-aim of protecting users' freedom to change the software. The
+protecting users' freedom to change the software.  The systematic
-systematic pattern of such abuse occurs in the area of products for
+pattern of such abuse occurs in the area of products for individuals to
-individuals to use, which is precisely where it is most unacceptable.
+use, which is precisely where it is most unacceptable.  Therefore, we
-Therefore, we have designed this version of the GPL to prohibit the
+have designed this version of the GPL to prohibit the practice for those
-practice for those products. If such problems arise substantially in
+products.  If such problems arise substantially in other domains, we
-other domains, we stand ready to extend this provision to those
+stand ready to extend this provision to those domains in future versions
-domains in future versions of the GPL, as needed to protect the
+of the GPL, as needed to protect the freedom of users.
-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
+software on general-purpose computers, but in those that do, we wish to
-to avoid the special danger that patents applied to a free program
+avoid the special danger that patents applied to a free program could
-could make it effectively proprietary. To prevent this, the GPL
+make it effectively proprietary.  To prevent this, the GPL assures that
-assures that patents cannot be used to render the program non-free.
+patents cannot be used to render the program non-free.
 
   The precise terms and conditions for copying, distribution and
 modification follow.
 
-### TERMS AND CONDITIONS
+                       TERMS AND CONDITIONS
 
-#### 0. Definitions.
+  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
+  "Copyright" also means copyright-like laws that apply to other kinds of
-of works, such as semiconductor masks.
+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
+in a fashion requiring copyright permission, other than the making of an
-an exact copy. The resulting work is called a "modified version" of
+exact copy.  The resulting work is called a "modified version" of the
-the earlier work or a work "based on" the earlier work.
+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.
@@ -109,12 +110,11 @@ 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
+parties to make or receive copies.  Mere interaction with a user through
-through a computer network, with no transfer of a copy, is not
+a computer network, with no transfer of a copy, is not conveying.
-conveying.
 
-An interactive user interface displays "Appropriate Legal Notices" to
+  An interactive user interface displays "Appropriate Legal Notices"
-the extent that it includes a convenient and prominently visible
+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
@@ -122,11 +122,11 @@ 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.
+  1. Source Code.
 
-The "source code" for a work means the preferred form of the work for
+  The "source code" for a work means the preferred form of the work
-making modifications to it. "Object code" means any non-source form of
+for making modifications to it.  "Object code" means any non-source
-a work.
+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
@@ -157,13 +157,14 @@ 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
+  The Corresponding Source need not include anything that users
-regenerate automatically from other parts of the Corresponding Source.
+can regenerate automatically from other parts of the Corresponding
+Source.
 
-The Corresponding Source for a work in source code form is that same
+  The Corresponding Source for a work in source code form is that
-work.
+same work.
 
-#### 2. Basic Permissions.
+  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
@@ -173,22 +174,22 @@ 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,
+  You may make, run and propagate covered works that you do not
-without conditions so long as your license otherwise remains in force.
+convey, without conditions so long as your license otherwise remains
-You may convey covered works to others for the sole purpose of having
+in force.  You may convey covered works to others for the sole purpose
-them make modifications exclusively for you, or provide you with
+of having them make modifications exclusively for you, or provide you
-facilities for running those works, provided that you comply with the
+with facilities for running those works, provided that you comply with
-terms of this License in conveying all material for which you do not
+the terms of this License in conveying all material for which you do
-control copyright. Those thus making or running the covered works for
+not control copyright.  Those thus making or running the covered works
-you must do so exclusively on your behalf, under your direction and
+for you must do so exclusively on your behalf, under your direction
-control, on terms that prohibit them from making any copies of your
+and control, on terms that prohibit them from making any copies of
-copyrighted material outside their relationship with you.
+your copyrighted material outside their relationship with you.
 
-Conveying under any other circumstances is permitted solely under the
+  Conveying under any other circumstances is permitted solely under
-conditions stated below. Sublicensing is not allowed; section 10 makes
+the conditions stated below.  Sublicensing is not allowed; section 10
-it unnecessary.
+makes it unnecessary.
 
-#### 3. Protecting Users' Legal Rights From Anti-Circumvention Law.
+  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
@@ -197,14 +198,14 @@ 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 of technological measures to the extent such circumvention
-circumvention is effected by exercising rights under this License with
+is effected by exercising rights under this License with respect to
-respect to the covered work, and you disclaim any intention to limit
+the covered work, and you disclaim any intention to limit operation or
-operation or modification of the work as a means of enforcing, against
+modification of the work as a means of enforcing, against the work's
-the work's users, your or third parties' legal rights to forbid
+users, your or third parties' legal rights to forbid circumvention of
-circumvention of technological measures.
+technological measures.
 
-#### 4. Conveying Verbatim Copies.
+  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
@@ -217,27 +218,29 @@ 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.
+  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
+terms of section 4, provided that you also meet all of these conditions:
-conditions:
 
--   a) The work must carry prominent notices stating that you modified
+    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
+    b) The work must carry prominent notices stating that it is
-    section 7. This requirement modifies the requirement in section 4
+    released under this License and any conditions added under section
-    to "keep intact all notices".
+    7.  This requirement modifies the requirement in section 4 to
--   c) You must license the entire work, as a whole, under this
+    "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
+
+    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.
@@ -252,18 +255,19 @@ 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.
+  6. Conveying Non-Source Forms.
 
-You may convey a covered work in object code form under the terms of
+  You may convey a covered work in object code form under the terms
-sections 4 and 5, provided that you also convey the machine-readable
+of sections 4 and 5, provided that you also convey the
-Corresponding Source under the terms of this License, in one of these
+machine-readable Corresponding Source under the terms of this License,
-ways:
+in one of these ways:
 
--   a) Convey the object code in, or embodied in, a physical product
+    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
+
+    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
@@ -272,14 +276,16 @@ ways:
     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
+    conveying of source, or (2) access to copy the
-    Source from a network server at no charge.
+    Corresponding Source from a network server at no charge.
--   c) Convey individual copies of the object code with a copy of the
+
+    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
+
+    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
@@ -291,36 +297,36 @@ ways:
     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
+    e) Convey the object code using peer-to-peer transmission, provided
-    Corresponding Source of the work are being offered to the general
+    you inform other peers where the object code and Corresponding
-    public at no charge under subsection 6d.
+    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,
+tangible personal property which is normally used for personal, family,
-family, or household purposes, or (2) anything designed or sold for
+or household purposes, or (2) anything designed or sold for incorporation
-incorporation into a dwelling. In determining whether a product is a
+into a dwelling.  In determining whether a product is a consumer product,
-consumer product, doubtful cases shall be resolved in favor of
+doubtful cases shall be resolved in favor of coverage.  For a particular
-coverage. For a particular product received by a particular user,
+product received by a particular user, "normally used" refers to a
-"normally used" refers to a typical or common use of that class of
+typical or common use of that class of product, regardless of the status
-product, regardless of the status of the particular user or of the way
+of the particular user or of the way in which the particular user
-in which the particular user actually uses, or expects or is expected
+actually uses, or expects or is expected to use, the product.  A product
-to use, the product. A product is a consumer product regardless of
+is a consumer product regardless of whether the product has substantial
-whether the product has substantial commercial, industrial or
+commercial, industrial or non-consumer uses, unless such uses represent
-non-consumer uses, unless such uses represent the only significant
+the only significant mode of use of the product.
-mode of use of the product.
 
   "Installation Information" for a User Product means any methods,
-procedures, authorization keys, or other information required to
+procedures, authorization keys, or other information required to install
-install and execute modified versions of a covered work in that User
+and execute modified versions of a covered work in that User Product from
-Product from a modified version of its Corresponding Source. The
+a modified version of its Corresponding Source.  The information must
-information must suffice to ensure that the continued functioning of
+suffice to ensure that the continued functioning of the modified object
-the modified object code is in no case prevented or interfered with
+code is in no case prevented or interfered with solely because
-solely because modification has been made.
+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
@@ -334,13 +340,12 @@ 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
+requirement to continue to provide support service, warranty, or updates
-updates for a work that has been modified or installed by the
+for a work that has been modified or installed by the recipient, or for
-recipient, or for the User Product in which it has been modified or
+the User Product in which it has been modified or installed.  Access to a
-installed. Access to a network may be denied when the modification
+network may be denied when the modification itself materially and
-itself materially and adversely affects the operation of the network
+adversely affects the operation of the network or violates the rules and
-or violates the rules and protocols for communication across the
+protocols for communication across the network.
-network.
 
   Corresponding Source conveyed, and Installation Information provided,
 in accord with this section must be in a format that is publicly
@@ -348,7 +353,7 @@ 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.
+  7. Additional Terms.
 
   "Additional permissions" are terms that supplement the terms of this
 License by making exceptions from one or more of its conditions.
@@ -367,26 +372,31 @@ 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
+add to a covered work, you may (if authorized by the copyright holders of
-of that material) supplement the terms of this License with terms:
+that material) supplement the terms of this License with terms:
 
--   a) Disclaiming warranty or limiting liability differently from the
+    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
+
+    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
+    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
+    d) Limiting the use for publicity purposes of names of licensors or
--   e) Declining to grant rights under trademark law for use of some
+    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
+    f) Requiring indemnification of licensors and authors of that
-    of it) with contractual assumptions of liability to the recipient,
+    material by anyone who conveys the material (or modified versions of
-    for any liability that these contractual assumptions directly
+    it) with contractual assumptions of liability to the recipient, for
-    impose on those licensors and authors.
+    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
@@ -404,10 +414,10 @@ 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
+form of a separately written license, or stated as exceptions;
-above requirements apply either way.
+the above requirements apply either way.
 
-#### 8. Termination.
+  8. Termination.
 
   You may not propagate or modify a covered work except as expressly
 provided under this License.  Any attempt otherwise to propagate or
@@ -415,12 +425,12 @@ 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
+  However, if you cease all violation of this License, then your
-from a particular copyright holder is reinstated (a) provisionally,
+license from a particular copyright holder is reinstated (a)
-unless and until the copyright holder explicitly and finally
+provisionally, unless and until the copyright holder explicitly and
-terminates your license, and (b) permanently, if the copyright holder
+finally terminates your license, and (b) permanently, if the copyright
-fails to notify you of the violation by some reasonable means prior to
+holder fails to notify you of the violation by some reasonable means
-60 days after the cessation.
+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
@@ -435,10 +445,10 @@ 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.
+  9. Acceptance Not Required for Having Copies.
 
-You are not required to accept this License in order to receive or run
+  You are not required to accept this License in order to receive or
-a copy of the Program. Ancillary propagation of a covered work
+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
@@ -446,7 +456,7 @@ 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.
+  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
@@ -471,14 +481,14 @@ rights granted under this License, and you may not initiate litigation
 any patent claim is infringed by making, using, selling, offering for
 sale, or importing the Program or any portion of it.
 
-#### 11. Patents.
+  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
+  A contributor's "essential patent claims" are all patent claims
-or controlled by the contributor, whether already acquired or
+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
@@ -521,39 +531,38 @@ 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
+  A patent license is "discriminatory" if it does not include within
-scope of its coverage, prohibits the exercise of, or is conditioned on
+the scope of its coverage, prohibits the exercise of, or is
-the non-exercise of one or more of the rights that are specifically
+conditioned on the non-exercise of one or more of the rights that are
-granted under this License. You may not convey a covered work if you
+specifically granted under this License.  You may not convey a covered
-are a party to an arrangement with a third party that is in the
+work if you are a party to an arrangement with a third party that is
-business of distributing software, under which you make payment to the
+in the business of distributing software, under which you make payment
-third party based on the extent of your activity of conveying the
+to the third party based on the extent of your activity of conveying
-work, and under which the third party grants, to any of the parties
+the work, and under which the third party grants, to any of the
-who would receive the covered work from you, a discriminatory patent
+parties who would receive the covered work from you, a discriminatory
-license (a) in connection with copies of the covered work conveyed by
+patent license (a) in connection with copies of the covered work
-you (or copies made from those copies), or (b) primarily for and in
+conveyed by you (or copies made from those copies), or (b) primarily
-connection with specific products or compilations that contain the
+for and in connection with specific products or compilations that
-covered work, unless you entered into that arrangement, or that patent
+contain the covered work, unless you entered into that arrangement,
-license was granted, prior to 28 March 2007.
+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.
+  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
+covered work so as to satisfy simultaneously your obligations under this
-this License and any other pertinent obligations, then as a
+License and any other pertinent obligations, then as a consequence you may
-consequence you may not convey it at all. For example, if you agree to
+not convey it at all.  For example, if you agree to terms that obligate you
-terms that obligate you to collect a royalty for further conveying
+to collect a royalty for further conveying from those to whom you convey
-from those to whom you convey the Program, the only way you could
+the Program, the only way you could satisfy both those terms and this
-satisfy both those terms and this License would be to refrain entirely
+License would be to refrain entirely from conveying the Program.
-from conveying the Program.
 
-#### 13. Use with the GNU Affero General Public License.
+  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
@@ -564,57 +573,56 @@ 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.
+  14. Revised Versions of this License.
 
-The Free Software Foundation may publish revised and/or new versions
+  The Free Software Foundation may publish revised and/or new versions of
-of the GNU General Public License from time to time. Such new versions
+the GNU General Public License from time to time.  Such new versions will
-will be similar in spirit to the present version, but may differ in
+be similar in spirit to the present version, but may differ in detail to
-detail to address new problems or concerns.
+address new problems or concerns.
 
-Each version is given a distinguishing version number. If the Program
+  Each version is given a distinguishing version number.  If the
-specifies that a certain numbered version of the GNU General Public
+Program specifies that a certain numbered version of the GNU General
-License "or any later version" applies to it, you have the option of
+Public License "or any later version" applies to it, you have the
-following the terms and conditions either of that numbered version or
+option of following the terms and conditions either of that numbered
-of any later version published by the Free Software Foundation. If the
+version or of any later version published by the Free Software
-Program does not specify a version number of the GNU General Public
+Foundation.  If the Program does not specify a version number of the
-License, you may choose any version ever published by the Free
+GNU General Public License, you may choose any version ever published
-Software Foundation.
+by the Free Software Foundation.
 
-If the Program specifies that a proxy can decide which future versions
+  If the Program specifies that a proxy can decide which future
-of the GNU General Public License can be used, that proxy's public
+versions of the GNU General Public License can be used, that proxy's
-statement of acceptance of a version permanently authorizes you to
+public statement of acceptance of a version permanently authorizes you
-choose that version for the Program.
+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.
+  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
+HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY
-WARRANTY OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT
+OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO,
-LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
-A PARTICULAR PURPOSE. THE ENTIRE RISK AS TO THE QUALITY AND
+PURPOSE.  THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM
-PERFORMANCE OF THE PROGRAM IS WITH YOU. SHOULD THE PROGRAM PROVE
+IS WITH YOU.  SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF
-DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING, REPAIR OR
+ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
-CORRECTION.
 
-#### 16. Limitation of Liability.
+  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
+WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS
-CONVEYS THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES,
+THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY
-INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES
+GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE
-ARISING OUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT
+USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF
-NOT LIMITED TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR
+DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD
-LOSSES SUSTAINED BY YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM
+PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS),
-TO OPERATE WITH ANY OTHER PROGRAMS), EVEN IF SUCH HOLDER OR OTHER
+EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF
-PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
+SUCH DAMAGES.
 
-#### 17. Interpretation of Sections 15 and 16.
+  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,
@@ -625,17 +633,16 @@ copy of the Program in return for a fee.
 
                      END OF TERMS AND CONDITIONS
 
-### How to Apply These Terms to Your New Programs
+            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
+free software which everyone can redistribute and change under these terms.
-terms.
 
-To do so, attach the following notices to the program. It is safest to
+  To do so, attach the following notices to the program.  It is safest
-attach them to the start of each source file to most effectively state
+to attach them to the start of each source file to most effectively
-the exclusion of warranty; and each file should have at least the
+state the exclusion of warranty; and each file should have at least
-"copyright" line and a pointer to where the full notice is found.
+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>
@@ -651,10 +658,9 @@ the exclusion of warranty; and each file should have at least 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/>.
+    along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
-Also add information on how to contact you by electronic and paper
+Also add information on how to contact you by electronic and paper mail.
-mail.
 
   If the program does terminal interaction, make it output a short
 notice like this when it starts in an interactive mode:
@@ -664,19 +670,18 @@ notice like this when it starts in an interactive mode:
     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
+The hypothetical commands `show w' and `show c' should show the appropriate
-appropriate parts of the General Public License. Of course, your
+parts of the General Public License.  Of course, your program's commands
-program's commands might be different; for a GUI interface, you would
+might be different; for a GUI interface, you would use an "about box".
-use an "about box".
 
-You should also get your employer (if you work as a programmer) or
+  You should also get your employer (if you work as a programmer) or school,
-school, if any, to sign a "copyright disclaimer" for the program, if
+if any, to sign a "copyright disclaimer" for the program, if necessary.
-necessary. For more information on this, and how to apply and follow
+For more information on this, and how to apply and follow the GNU GPL, see
-the GNU GPL, see <https://www.gnu.org/licenses/>.
+<http://www.gnu.org/licenses/>.
 
-The GNU General Public License does not permit incorporating your
+  The GNU General Public License does not permit incorporating your program
-program into proprietary programs. If your program is a subroutine
+into proprietary programs.  If your program is a subroutine library, you
-library, you may consider it more useful to permit linking proprietary
+may consider it more useful to permit linking proprietary applications with
-applications with the library. If this is what you want to do, use the
+the library.  If this is what you want to do, use the GNU Lesser General
-GNU Lesser General Public License instead of this License. But first,
+Public License instead of this License.  But first, please read
-please read <https://www.gnu.org/licenses/why-not-lgpl.html>.
+<http://www.gnu.org/philosophy/why-not-lgpl.html>.

assets/example.net.disabled

@@ -1,82 +1,140 @@
 # This configuration file uses the YAML format.
-# ~ means "no value" (i.e. "default value")
+
-# Replace it by a value and put quotes (") around values with special characters
+# This configuration can be enabled/disabled and controlled by adding the
-# List items start with a dash and a space (- )
+# network to `/etc/default/vpncloud` and starting/stopping it via
-# Note that the whitespace before the settings names is important for the file structure
+# `/etc/init.d/vpncloud start/stop` on non-systemd systems and via
+# `systemctl enable/disable vpncloud@NAME` and
+# `service vpncloud@NAME start/stop` on systemd systems.
 
 
-listen: 3210                # The port number or ip:port on which to listen for data.
+# The port number or ip:port on which to listen for data.
+# Note: Every VPN needs a different port number.
+listen: 3210
 
-peers:                      # Address of a peer to connect to. 
+# Address of a peer to connect to. The address should be in the form
-                            # The address should be in the form `addr:port`.
+# `addr:port`. If the node is not started, the connection will be retried
-                            # Put [] for an empty list
+# periodically. This parameter can be repeated to connect to multiple peers.
-  - node2.example.com:3210
+# Note: Several entries can be separated by spaces.
-  - node3.example.com:3210
+peers:
+#  - node2.example.com:3210
+#  - node3.example.com:3210
 
-crypto:                     # Crypto settings
+# Peer timeout in seconds. The peers will exchange information periodically
-  password: ~  # <-- CHANGE # A password to encrypt the VPN data.
+# and drop peers that are silent for this period of time.
-  private-key: ~            # Private key (alternative to password)
+peer-timeout: 300
-  public-key: ~             # Public key (alternative to password)
-  trusted-keys: []          # Trusted keys (alternative to password)
-                            # Replace [] with list of keys
 
-ip: ~          # <-- CHANGE # An IP address to set on the device, e.g. 10.0.0.1
+# Switch table entry timeout in seconds. This parameter is only used in switch
-                            # Must be different for every node on the VPN
+# mode. Addresses that have not been seen for the given period of time  will
+# be forgot.
+switch-timeout: 300
 
 
-# ------------------ Advanced features ahead --------------------
+# Crypto settings
+#crypto:
 
-auto-claim: true            # Whether to automatically claim the configured IP on tun devices
+  # An optional password to encrypt the VPN data.
+  #password: ""
 
-claims:                     # The local subnets to use. This parameter should be in the form
+  # Private key
+  #private-key: ""
+
+  # Public key
+  #public-key: ""
+
+  # Trusted keys
+  #trusted-keys:
+
+  # Supported algorithms. Subset of "aes128", "aes256", "chacha20", and 
+  # "plain" where "plain" means unencrypted.
+  #algorithms:
+
+
+# Device settings
+device:
+
+  # Name of the virtual device. Any `%d` will be filled with a free number.
+  name: "vpncloud%d"
+
+  # Set the type of network. There are two options: **tap** devices process
+  # Ethernet frames **tun** devices process IP packets. [default: `tun`]
+  type: tun
+
+  # The path of the /dev/net/tun device. Only change if you need to.
+  #path: /dev/net/tun
+
+  # Whether to fix detected rp-filter problems
+  fix-rp-filter: false
+
+
+# The mode of the VPN. The VPN can like a router, a switch or a hub. A **hub**
+# will send all data always to all peers. A **switch** will learn addresses
+# from incoming data and only send data to all peers when the address is
+# unknown. A **router** will send data according to known subnets of the
+# peers and ignore them otherwise. The **normal** mode is switch for tap
+# devices and router for tun devices. [default: `normal`]
+mode: normal
+
+
+# The local subnets to use. This parameter should be in the form
 # `address/prefixlen` where address is an IPv4 address, an IPv6 address, or a
 # MAC address. The prefix length is the number of significant front bits that
-                            # distinguish the subnet from other subnets.
+# distinguish the subnet from other subnets. Example: `10.1.1.0/24`.
+# Note: Several entries can be separated by spaces.
+#claims:
 #  - 10.1.1.0/24
 
-ifup: ~                     # Command to setup the interface. Use $IFNAME for interface name.
+# Whether to automatically claim the configured IP on tun devices
-ifdown: ~                   # Command to tear down the interface. Use $IFNAME for interface name.
+auto-claim: true
-
-device:                     # Device settings
-  name: "vpncloud%d"        # Name of the virtual device. Any `%d` will be filled with a free number.
-  type: tun                 # Set the type of network. There are two options: **tap** devices process
-                            # Ethernet frames **tun** devices process IP packets. [default: `tun`]
-  path: "/dev/net/tun"      # Path of the tun device
-  fix-rp-filter: false      # Whether to fix detected rp-filter problems
-
-mode: normal                # Mode to run in, "normal", "hub", "switch", or "router" (see manpage)
-
-port-forwarding: true       # Try to map a port on the router
-
-switch-timeout: 300         # Switch timeout in seconds (switch mode only)
-
-peer-timeout: 300           # Peer timeout in seconds
-keepalive: ~                # Keepalive interval in seconds
-
-beacon:                     # Beacon settings
-  store: ~                  # File or command (prefix: "|") to use for storing beacons
-  load: ~                   # File or command (prefix: "|") to use for loading beacons  
-  interval: 3600            # How often to load and store beacons (in seconds)
-  password: ~               # Password to encrypt beacon data with
-
-statsd:                     # Statsd settings
-  server: ~                 # Statsd server name:port
-  prefix: ~                 # Prefix to use for stats keys
-
-pid-file: ~                 # Store the process id in this file when running in the background
-stats-file: ~               # Periodically write statistics on peers and current traffic to the given file
-
-hook: ~                     # Hook script to run for every event
-hooks: {}                   # Multiple hook scripts to run for specific events
 
 
+# An IP address to set on the device
+#ip: "" 
 
-# Copy this template and save it to a file named /etc/vpncloud/MYNET.net (replace MYNET with your network name)
+# A command to setup the network interface. The command will be run (as
-#
+# parameter to `sh -c`) when the device has been created to configure it.
-# On systems using systemd (most common):
+# The name of the allocated device will be available via the environment
-#    start/stop the network:            service vpncloud@MYNET start/stop
+# variable `IFNAME`.
-#    enable/disable automatic startup:  systemctl enable/disable vpncloud@MYNET
+#ifup: ""
-#
+
-# On older systems (using sysv init):
+# A command to bring down the network interface. The command will be run (as
-#    Add the network name to /etc/default/vpncloud
+# parameter to `sh -c`) to remove any configuration from the device.
-#    start/stop all VpnCloud networks:  /etc/init.d/vpncloud start/stop
+# The name of the allocated device will be available via the environment
+# variable `IFNAME`.
+#ifdown: ""
+
+# Store the process id in this file when running in the background. If set,
+# the given file will be created containing the process id of the new
+# background process. This option is only used when running in background.
+#pid_file: ""
+
+# Change the user and/or group of the process once all the setup has been
+# done and before spawning the background process. This option is only used
+# when running in background.
+#user: ""
+#group: ""
+
+
+# Beacon settings
+beacon:
+
+  # File or command (prefix: "|") to use for storing beacons
+  #store: ""
+
+  # File or command (prefix: "|") to use for loading beacons
+  #load: ""
+
+  # How often to load and store beacons (in seconds)
+  interval: 3600
+
+  # Password to encrypt beacon data with
+  #password: ""
+
+
+# Statsd settings
+#statsd:
+
+  # Statsd server name:port
+  #server: ""
+
+  # Prefix to use for stats keys
+  #prefix: "" 

assets/vpncloud-wsproxy.service

@@ -1,22 +0,0 @@
-[Unit]
-Description=VpnCloud websocket proxy
-After=network-online.target
-Wants=network-online.target
-Documentation=man:vpncloud(1)
-
-[Service]
-Type=simple
-ExecStart=/usr/bin/vpncloud ws-proxy -l 3210
-RestartSec=5s
-Restart=on-failure
-TasksMax=10
-MemoryMax=50M
-PrivateTmp=yes
-ProtectHome=yes
-ProtectSystem=strict
-ReadWritePaths=/var/log /run
-CapabilityBoundingSet=CAP_NET_BIND_SERVICE CAP_SYS_CHROOT
-DeviceAllow=/dev/null rw
-
-[Install]
-WantedBy=multi-user.target

assets/vpncloud.1

@@ -0,0 +1,860 @@
+'\" t
+.\"     Title: vpncloud
+.\"    Author: [see the "AUTHORS" section]
+.\" Generator: Asciidoctor 1.5.5
+.\"      Date: 2020-06-03
+.\"    Manual: \ \&
+.\"    Source: \ \&
+.\"  Language: English
+.\"
+.TH "VPNCLOUD" "1" "2020-06-03" "\ \&" "\ \&"
+.ie \n(.g .ds Aq \(aq
+.el       .ds Aq '
+.ss \n[.ss] 0
+.nh
+.ad l
+.de URL
+\\$2 \(laURL: \\$1 \(ra\\$3
+..
+.if \n[.g] .mso www.tmac
+.LINKSTYLE blue R < >
+.SH "NAME"
+vpncloud \- Peer\-to\-peer VPN
+.SH "SYNOPSIS"
+.sp
+\fBvpncloud [options] [\-\-config <file>] [\-t <type>] [\-d <name>] [\-l <addr>] [\-c <addr>...]\fP
+.SH "OPTIONS"
+.sp
+\fB\-\-config <file>\fP
+.RS 4
+Read configuration options from the specified file. Please see the section
+\fBCONFIG FILES\fP for documentation on the file format.
+If the same option is defined in the config file and as a parameter, the
+parameter overrides the config file.
+.RE
+.sp
+\fB\-t <type>\fP, \fB\-\-type <type>\fP
+.RS 4
+Set the type of network. There are two options: \fBtap\fP devices process
+Ethernet frames \fBtun\fP devices process IP packets. [default: \fBtap\fP]
+.RE
+.sp
+\fB\-d <name>\fP, \fB\-\-device <name>\fP
+.RS 4
+Name of the virtual device. Any \fB%d\fP will be filled with a free number.
+[default: \fBvpncloud%d\fP]
+.RE
+.sp
+\fB\-\-device\-path <path>\fP
+.RS 4
+The path of the base device inode, e.g. /dev/net/run.
+.RE
+.sp
+\fB\-m <mode>\fP, \fB\-\-mode <mode>\fP
+.RS 4
+The mode of the VPN. The VPN can like a router, a switch or a hub. A \fBhub\fP
+will send all data always to all peers. A \fBswitch\fP will learn addresses
+from incoming data and only send data to all peers when the address is
+unknown. A \fBrouter\fP will send data according to known subnets of the
+peers and ignore them otherwise. The \fBnormal\fP mode is switch for tap
+devices and router for tun devices. [default: \fBnormal\fP]
+.RE
+.sp
+\fB\-l <addr>\fP, \fB\-\-listen <addr>\fP
+.RS 4
+The address on which to listen for data. This can be simply a port number
+or a full address in form IP:PORT. If the IP is specified as \(aq\(rs*\(aq or only
+a port number is given, then the socket will listen on all IPs (v4 and v6),
+otherwise the socket will only listen on the given IP. [default: \fB3210\fP]
+.RE
+.sp
+\fB\-c <addr>\fP, \fB\-\-connect <addr>\fP
+.RS 4
+Address of a peer to connect to. The address should be in the form
+\fBaddr:port\fP. If the node is not started, the connection will be retried
+periodically. This parameter can be repeated to connect to multiple peers.
+.RE
+.sp
+\fB\-s <subnet>\fP, \fB\-\-subnet <subnet>\fP:
+  The local subnets to use. This parameter should be in the form
+  \fBaddress/prefixlen\fP where address is an IPv4 address, an IPv6 address, or a
+  MAC address. The prefix length is the number of significant front bits that
+  distinguish the subnet from other subnets. Example: \fB10.1.1.0/24\fP.
+.sp
+\fB\-\-shared\-key <key>\fP
+.RS 4
+An optional shared key to encrypt the VPN data. If this option is not set,
+the traffic will be sent unencrypted.
+.RE
+.sp
+\fB\-\-crypto <method>\fP
+.RS 4
+The encryption method to use ("aes256", or "chacha20"). Most current CPUs
+have special support for AES256 so this should be faster. For older
+computers lacking this support, only CHACHA20 is supported.
+[default: \fBchacha20\fP]
+.RE
+.sp
+\fB\-\-magic <id>\fP
+.RS 4
+Override the 4\-byte magic header of each packet. This header identifies the
+network and helps to distinguish it from other networks and other
+applications. The id can either be a 4 byte / 8 character hexadecimal
+string or an arbitrary string prefixed with "hash:" which will then be
+hashed into 4 bytes.
+.RE
+.sp
+\fB\-\-peer\-timeout <secs>\fP
+.RS 4
+Peer timeout in seconds. The peers will exchange information periodically
+and drop peers that are silent for this period of time. [default: \fB600\fP]
+.RE
+.sp
+\fB\-\-keepalive <secs>\fP
+.RS 4
+Interval of peer exchange messages in seconds. The peers will exchange
+information periodically to keep connections alive. This setting overrides
+how often this will happen. [default: \fBpeer\-timeout/2\-60\fP]
+.RE
+.sp
+\fB\-\-dst\-timeout <secs>\fP
+.RS 4
+Switch table entry timeout in seconds. This parameter is only used in switch
+mode. Addresses that have not been seen for the given period of time  will
+be forgotten. [default: \fB300\fP]
+.RE
+.sp
+\fB\-\-beacon\-store <path|command>\fP
+.RS 4
+Periodically store beacons containing the address of this node in the given
+file or via the given command. If the parameter value starts with a pipe
+character (\fB|\fP), the rest of the value is interpreted as a shell command.
+Otherwise the value is interpreted as a file to write the beacon to.
+If this parameter is not given, beacon storage is disabled.
+Please see the section \fBBEACONS\fP for more information.
+.RE
+.sp
+\fB\-\-beacon\-load <path|command>\fP
+.RS 4
+Periodically load beacons containing the addresses of other nodes from the
+given file or via the given command. If the parameter value starts with a
+pipe character (\fB|\fP), the rest of the value is interpreted as a shell
+command. Otherwise the value is interpreted as a file to read the beacon
+from.
+If this parameter is not given, beacon loading is disabled.
+Please see the section \fBBEACONS\fP for more information.
+.RE
+.sp
+\fB\-\-beacon\-interval <secs>\fP
+.RS 4
+Beacon storage/loading interval in seconds. If configured to do so via
+\fB\-\-beacon\-store\fP and \fB\-\-beacon\-load\fP, the node will periodically store its
+beacon and load beacons of other nodes. This parameter defines the interval
+in seconds. [default: \fB3600\fP]
+.RE
+.sp
+\fB\-\-ifup <command>\fP
+.RS 4
+A command to setup the network interface. The command will be run (as
+parameter to \fBsh \-c\fP) when the device has been created to configure it.
+The name of the allocated device will be available via the environment
+variable \fBIFNAME\fP.
+Please note that this command is executed with the full permissions of the
+caller.
+.RE
+.sp
+\fB\-\-ifdown <command>\fP
+.RS 4
+A command to bring down the network interface. The command will be run (as
+parameter to \fBsh \-c\fP) to remove any configuration from the device.
+The name of the allocated device will be available via the environment
+variable \fBIFNAME\fP.
+Please note that this command is executed with the (limited) permissions of
+the user and group given as \fB\-\-user\fP and \fB\-\-group\fP.
+.RE
+.sp
+\fB\-\-pid\-file <file>\fP
+.RS 4
+Store the process id in this file when running in the background. If set,
+the given file will be created containing the process id of the new
+background process. This option is only used when running in background.
+.RE
+.sp
+\fB\-\-user <user>\fP, \fB\-\-group <group>\fP
+.RS 4
+Change the user and/or group of the process once all the setup has been
+done.
+.RE
+.sp
+\fB\-\-log\-file <file>\fP
+.RS 4
+If set, print logs also to the given file. The file will be created and
+truncated if is exists.
+.RE
+.sp
+\fB\-\-stats\-file <file>\fP
+.RS 4
+If set, periodically write statistics on peers and current traffic to the
+given file. The file will be periodically overwritten with new data.
+.RE
+.sp
+\fB\-\-daemon\fP
+.RS 4
+Spawn a background process instead of running the process in the foreground.
+If this flag is set, the process will first carry out all the
+initialization, then drop permissions if \fB\-\-user\fP or \fB\-\-group\fP is used and
+then spawn a background process and write its process id to a file if
+\fB\-\-pid\-file\fP is set. Then, the main process will exit and the background
+process continues to provide the VPN. At the time, when the main process
+exits, the interface exists and is properly configured to be used.
+.RE
+.sp
+\fB\-\-no\-port\-forwarding\fP
+.RS 4
+Disable automatic port forward. If this option is not set, VpnCloud tries to
+detect a NAT router and automatically add a port forwarding to it.
+.RE
+.sp
+\fB\-v\fP, \fB\-\-verbose\fP
+.RS 4
+Print debug information, including information for data being received and
+sent.
+.RE
+.sp
+\fB\-q\fP, \fB\-\-quiet\fP
+.RS 4
+Only print errors and warnings.
+.RE
+.sp
+\fB\-h\fP, \fB\-\-help\fP
+.RS 4
+Display the help.
+.RE
+.SH "DESCRIPTION"
+.sp
+\fBVpnCloud\fP is a simple VPN over UDP. It creates a virtual network interface on
+the host and forwards all received data via UDP to the destination. It can work
+in 3 different modes:
+.sp
+\fBSwitch mode\fP
+.RS 4
+In this mode, the VPN will dynamically learn addresses
+as they are used as source addresses and use them to forward data to its
+destination. Addresses that have not been seen for some time
+(option \fBswitch_timeout\fP) will be forgotten. Data for unknown addresses will be
+broadcast to all peers. This mode is the default mode for TAP devices that
+process Ethernet frames but it can also be used with TUN devices and IP
+packets.
+.RE
+.sp
+\fBHub mode\fP
+.RS 4
+In this mode, all data will always be broadcast to all peers.
+This mode uses lots of bandwidth and should only be used in special cases.
+.RE
+.sp
+\fBRouter mode\fP
+.RS 4
+In this mode, data will be forwarded based on preconfigured
+address ranges ("subnets"). Data for unknown nodes will be silently ignored.
+This mode is the default mode for TUN devices that work with IP packets but
+it can also be used with TAP devices and Ethernet frames.
+.RE
+.sp
+All connected VpnCloud nodes will form a peer\-to\-peer network and cross\-connect
+automatically until the network is fully connected. The nodes will periodically
+exchange information with the other nodes to signal that they are still active
+and to allow the automatic cross\-connect behavior. There are some important
+things to note:
+.sp
+.RS 4
+.ie n \{\
+\h'-04' 1.\h'+01'\c
+.\}
+.el \{\
+.sp -1
+.IP " 1." 4.2
+.\}
+To avoid that different networks that reuse each others addresses merge due
+to the cross\-connect behavior, the \fBmagic\fP option can be used and set
+to any unique string to identify the network. The \fBmagic\fP must be the
+same on all nodes of the same VPN network.
+.RE
+.sp
+.RS 4
+.ie n \{\
+\h'-04' 2.\h'+01'\c
+.\}
+.el \{\
+.sp -1
+.IP " 2." 4.2
+.\}
+The cross\-connect behavior can be able to connect nodes that are behind
+firewalls or NATs as it can function as hole\-punching.
+.RE
+.sp
+.RS 4
+.ie n \{\
+\h'-04' 3.\h'+01'\c
+.\}
+.el \{\
+.sp -1
+.IP " 3." 4.2
+.\}
+The management traffic will increase with the peer number quadratically.
+It should still be reasonably small for high node numbers (below 10 KiB/s
+for 10.000 nodes). A longer \fBpeer_timeout\fP can be used to reduce the traffic
+further. For high node numbers, router mode should be used as it never
+broadcasts data.
+.RE
+.sp
+VpnCloud does not implement any loop\-avoidance. Since data received on the UDP
+socket will only be sent to the local network interface and vice versa, VpnCloud
+cannot produce loops on its own. On the TAP device, however STP data can be
+transported to avoid loops caused by other network components.
+.sp
+For TAP devices, IEEE 802.1q frames (VLAN tagged) are detected and forwarded
+based on separate MAC tables. Any nested tags (Q\-in\-Q) will be ignored.
+.SH "EXAMPLES"
+.SS "Switched TAP scenario"
+.sp
+In the example scenario, a simple layer 2 network tunnel is established. Most
+likely those commands need to be run as \fBroot\fP using \fBsudo\fP.
+.sp
+First, VpnCloud need to be started on both nodes (the address after \fB\-c\fP is the
+address of the remote node and the the \fBX\fP in the interface address must be
+unique among all nodes, e.g. 0, 1, 2, ...):
+.sp
+.if n \{\
+.RS 4
+.\}
+.nf
+vpncloud \-c REMOTE_HOST:PORT \-\-ifup \(aqifconfig $IFNAME 10.0.0.X/24 mtu 1400 up\(aq
+.fi
+.if n \{\
+.RE
+.\}
+.sp
+Afterwards, the interface can be used to communicate.
+.SS "Routed TUN example"
+.sp
+In this example, 2 nodes and their subnets should communicate using IP.
+First, VpnCloud need to be started on both nodes:
+.sp
+.if n \{\
+.RS 4
+.\}
+.nf
+vpncloud \-t tun \-c REMOTE_HOST:PORT \-\-subnet 10.0.X.0/24 \-\-ifup \(aqifconfig $IFNAME 10.0.X.1/16 mtu 1400 up\(aq
+.fi
+.if n \{\
+.RE
+.\}
+.sp
+It is important to configure the interface in a way that all addresses on the
+VPN can be reached directly. E.g. if subnets 10.0.1.0/24, 10.0.2.0/24 and so on
+are used, the interface needs to be configured as 10.0.1.1/16.
+For TUN devices, this means that the prefix length of the subnets
+(/24 in this example) must be different than the prefix length that the
+interface is configured with (/16 in this example).
+.SS "Important notes"
+.sp
+.RS 4
+.ie n \{\
+\h'-04' 1.\h'+01'\c
+.\}
+.el \{\
+.sp -1
+.IP " 1." 4.2
+.\}
+VpnCloud can be used to connect two separate networks. TAP networks can be
+bridged using \fBbrctl\fP and TUN networks must be routed. It is very important
+to be careful when setting up such a scenario in order to avoid network loops,
+security issues, DHCP issues and many more problems.
+.RE
+.sp
+.RS 4
+.ie n \{\
+\h'-04' 2.\h'+01'\c
+.\}
+.el \{\
+.sp -1
+.IP " 2." 4.2
+.\}
+TAP devices will forward DHCP data. If done intentionally, this can be used
+to assign unique addresses to all participants. If this happens accidentally,
+it can conflict with DHCP servers of the local network and can have severe
+side effects.
+.RE
+.sp
+.RS 4
+.ie n \{\
+\h'-04' 3.\h'+01'\c
+.\}
+.el \{\
+.sp -1
+.IP " 3." 4.2
+.\}
+VpnCloud is not designed for high security use cases. Although the used crypto
+primitives are expected to be very secure, their application has not been
+reviewed.
+The shared key is hashed using \fIScryptSalsa208Sha256\fP to derive a key,
+which is used to encrypt the payload of messages using \fIChaCha20Poly1305\fP or
+\fIAES256\-GCM\fP. The encryption includes an authentication that also protects the
+header.
+This method does only protect against attacks on single messages but not
+against attacks that manipulate the message series itself (i.e. suppress
+messages, reorder them, or duplicate them).
+.RE
+.SH "CONFIG FILES"
+.sp
+The config file is a YAML file that contains configuration values. All entries
+are optional and override the defaults. Please see the section \fBOPTIONS\fP for
+detailed descriptions of the options.
+.sp
+\fBdevice_type\fP
+.RS 4
+Set the type of network. Same as \fB\-\-type\fP
+.RE
+.sp
+\fBdevice_name\fP
+.RS 4
+Name of the virtual device. Same as \fB\-\-device\fP
+.RE
+.sp
+\fBdevice_path\fP
+.RS 4
+Set the path of the base device. Same as \fB\-\-device\-path\fP
+.RE
+.sp
+\fBifup\fP
+.RS 4
+A command to setup the network interface. Same as \fB\-\-ifup\fP
+.RE
+.sp
+\fBifdown\fP
+.RS 4
+A command to bring down the network interface. Same as \fB\-\-ifdown\fP
+.RE
+.sp
+\fBcrypto\fP
+.RS 4
+The encryption method to use. Same as \fB\-\-crypto\fP
+.RE
+.sp
+\fBshared_key\fP
+.RS 4
+The shared key to encrypt all traffic. Same as \fB\-\-shared\-key\fP
+.RE
+.sp
+\fBmagic\fP
+.RS 4
+Override the 4\-byte magic header of each packet. Same as \fB\-\-magic\fP
+.RE
+.sp
+\fBport\fP
+.RS 4
+A port number to listen on. This option is DEPRECATED.
+.RE
+.sp
+\fBlisten\fP
+.RS 4
+The address on which to listen for data. Same as \fB\-\-listen\fP
+.RE
+.sp
+\fBpeers\fP
+.RS 4
+A list of addresses to connect to. See \fB\-\-connect\fP
+.RE
+.sp
+\fBpeer_timeout\fP
+.RS 4
+Peer timeout in seconds. Same as\fB\-\-peer\-timeout\fP
+.RE
+.sp
+\fBbeacon_store\fP
+.RS 4
+Path or command to store beacons. Same as \fB\-\-beacon\-store\fP
+.RE
+.sp
+\fBbeacon_load\fP
+.RS 4
+Path or command to load beacons. Same as \fB\-\-beacon\-load\fP
+.RE
+.sp
+\fBbeacon_interval\fP
+.RS 4
+Interval for loading and storing beacons in seconds. Same as \fB\-\-beacon\-interval\fP
+.RE
+.sp
+\fBmode\fP
+.RS 4
+The mode of the VPN. Same as \fB\-\-mode\fP
+.RE
+.sp
+\fBswitch_timeout\fP
+.RS 4
+Switch table entry timeout in seconds. Same as \fB\-\-dst\-timeout\fP
+.RE
+.sp
+\fBsubnets\fP
+.RS 4
+A list of local subnets to use. See \fB\-\-subnet\fP
+.RE
+.sp
+\fBport_forwarding\fP
+.RS 4
+Whether to activate port forwardig. See \fB\-\-no\-port\-forwarding\fP
+.RE
+.sp
+\fBuser\fP
+.RS 4
+The name of a user to run the background process under. See \fB\-\-user\fP
+.RE
+.sp
+\fBgroup\fP
+.RS 4
+The name of a group to run the background process under. See \fB\-\-group\fP
+.RE
+.sp
+\fBpid_file\fP
+.RS 4
+The path of the pid file to create. See \fB\-\-pid\-file\fP
+.RE
+.sp
+\fBstats_file\fP
+.RS 4
+The path of the statistics file. See \fB\-\-stats\-file\fP
+.RE
+.SS "Example"
+.sp
+.if n \{\
+.RS 4
+.\}
+.nf
+device_type: tun
+device_name: vpncloud%d
+ifup: ifconfig $IFNAME 10.0.1.1/16 mtu 1400 up
+crypto: aes256
+shared_key: mysecret
+listen: 3210
+peers:
+  \- remote.machine.foo:3210
+  \- remote.machine.bar:3210
+peer_timeout: 600
+mode: normal
+subnets:
+  \- 10.0.1.0/24
+port_forwarding: true
+user: nobody
+group: nogroup
+pid_file: /run/vpncloud.pid
+.fi
+.if n \{\
+.RE
+.\}
+.SH "BEACONS"
+.sp
+Beacons are short character sequences that contain a timestamp and a list of
+addresses. They can be published and retrieved by other nodes to find peers
+without the need for static addresses.
+.sp
+The beacons are short (less than 100 characters), encrypted and encoded with
+printable characters to allow publishing them in various places on the
+internet, e.g.:
+.sp
+.RS 4
+.ie n \{\
+\h'-04'\(bu\h'+03'\c
+.\}
+.el \{\
+.sp -1
+.IP \(bu 2.3
+.\}
+On shared drives or synchronized folders (e.g. on Dropbox)
+.RE
+.sp
+.RS 4
+.ie n \{\
+\h'-04'\(bu\h'+03'\c
+.\}
+.el \{\
+.sp -1
+.IP \(bu 2.3
+.\}
+Via a dedicated database
+.RE
+.sp
+.RS 4
+.ie n \{\
+\h'-04'\(bu\h'+03'\c
+.\}
+.el \{\
+.sp -1
+.IP \(bu 2.3
+.\}
+Via a general purpose message board of message service (e.g. Twitter)
+.RE
+.sp
+The beacons are very robust. They only consist of alphanumeric characters
+and can be interleaved with non\-alphanumeric characters (e.g. whitespace).
+Also the beacons contain a prefix and suffix that depends on the configured
+network magic and secret key (if set) so that all nodes can find beacons in
+a long text.
+.sp
+When beacons are stored or loaded via a command (using the pipe character \fB|\fP),
+the command is interpreted using the configured shell \fBsh\fP. This command has
+access to the following environment variables:
+.sp
+\fB$begin\fP
+.RS 4
+The prefix of the beacon.
+.RE
+.sp
+\fB$end\fP
+.RS 4
+The suffix of the beacon.
+.RE
+.sp
+\fB$data\fP (only on store)
+.RS 4
+The middle part of the beacon. Do not use this
+without prefix and suffix!
+.RE
+.sp
+\fB$beacon\fP (only on store)
+.RS 4
+The full beacon consisting of prefix, data and
+suffix.
+The commands are called in separate threads, so even longer running commands
+will not block the node.
+.RE
+.SH "NETWORK PROTOCOL"
+.sp
+The protocol of VpnCloud is kept as simple as possible to allow other
+implementations and to maximize the performance.
+.sp
+Every packet sent over UDP contains the following header (in order):
+.sp
+4 bytes \fBmagic\fP
+.RS 4
+This field is used to identify the packet and to sort out packets that do
+not belong. The default is \fB[0x76, 0x70, 0x6e, 0x01]\fP ("vpn\(rsx01").
+This field can be used to identify VpnCloud packets and might be set to
+something different to hide the protocol.
+.RE
+.sp
+1 byte \fBcrypto method\fP
+.RS 4
+This field specifies the method that must be used to decrypt the rest of the
+data. The currently supported methods are:
+.sp
+.RS 4
+.ie n \{\
+\h'-04'\(bu\h'+03'\c
+.\}
+.el \{\
+.sp -1
+.IP \(bu 2.3
+.\}
+Method \fB0\fP, \fBNo encryption\fP: Rest of the data can be read without
+decrypting it.
+.RE
+.sp
+.RS 4
+.ie n \{\
+\h'-04'\(bu\h'+03'\c
+.\}
+.el \{\
+.sp -1
+.IP \(bu 2.3
+.\}
+Method \fB1\fP, \fBChaCha20\fP: The header is followed by a 12 byte
+\fInonce\fP. The rest of the data is encrypted with the
+\fBlibsodium::crypto_aead_chacha20poly1305_ietf\fP method, using the 8 byte
+header as additional data.
+.RE
+.sp
+.RS 4
+.ie n \{\
+\h'-04'\(bu\h'+03'\c
+.\}
+.el \{\
+.sp -1
+.IP \(bu 2.3
+.\}
+Method \fB2\fP, \fBAES256\fP: The header is followed by a 12 byte \fInonce\fP.
+The rest of the data is encrypted with the
+\fBlibsodium::crypto_aead_aes256gcm\fP method, using the 8 byte header
+as additional data.
+.RE
+.RE
+.sp
+2 \fBreserved bytes\fP
+.RS 4
+that are currently unused and set to 0
+.RE
+.sp
+1 byte for the \fBmessage type\fP
+.RS 4
+This byte specifies the type of message that follows. Currently the
+following message types are supported:
+.sp
+.RS 4
+.ie n \{\
+\h'-04'\(bu\h'+03'\c
+.\}
+.el \{\
+.sp -1
+.IP \(bu 2.3
+.\}
+Type 0: Data packet
+.RE
+.sp
+.RS 4
+.ie n \{\
+\h'-04'\(bu\h'+03'\c
+.\}
+.el \{\
+.sp -1
+.IP \(bu 2.3
+.\}
+Type 1: Peer list
+.RE
+.sp
+.RS 4
+.ie n \{\
+\h'-04'\(bu\h'+03'\c
+.\}
+.el \{\
+.sp -1
+.IP \(bu 2.3
+.\}
+Type 2: Initial message
+.RE
+.sp
+.RS 4
+.ie n \{\
+\h'-04'\(bu\h'+03'\c
+.\}
+.el \{\
+.sp -1
+.IP \(bu 2.3
+.\}
+Type 3: Closing message
+.RE
+.RE
+.sp
+After this 8 byte header, the rest of the message follows. It is encrypted using
+the method specified in the header.
+.sp
+In the decrypted data, the message as specified in the \fBmessage type\fP field
+will follow:
+.sp
+\fBData packet\fP (message type 0)
+.RS 4
+This packet contains payload. The format of the data depends on the device
+type. For TUN devices, this data contains an IP packet. For TAP devices it
+contains an Ethernet frame. The data starts right after the header and ends
+at the end of the packet.
+If it is an Ethernet frame, it will start with the destination MAC and end
+with the payload. It does not contain the preamble, SFD, padding, and CRC
+fields.
+.RE
+.sp
+\fBPeer list\fP (message type 1)
+.RS 4
+This packet contains the peer list of the sender. The first byte after the
+switch byte contains the number of IPv4 addresses that follow.
+After that, the specified number of addresses follow, where each address
+is encoded in 6 bytes. The first 4 bytes are the IPv4 address and the later
+2 bytes are port number (both in network byte order).
+After those addresses, the next byte contains the number of IPv6 addresses
+that follow. After that, the specified number of addresses follow, where
+each address is encoded in 18 bytes. The first 16 bytes are the IPv6 address
+and the later 2 bytes are port number (both in network byte order).
+.RE
+.sp
+\fBInitial message\fP (message type 2)
+.RS 4
+This packet contains the following information:
+.sp
+.RS 4
+.ie n \{\
+\h'-04'\(bu\h'+03'\c
+.\}
+.el \{\
+.sp -1
+.IP \(bu 2.3
+.\}
+The stage of the initialization process
+.RE
+.sp
+.RS 4
+.ie n \{\
+\h'-04'\(bu\h'+03'\c
+.\}
+.el \{\
+.sp -1
+.IP \(bu 2.3
+.\}
+A random node id to distinguish different nodes
+.RE
+.sp
+.RS 4
+.ie n \{\
+\h'-04'\(bu\h'+03'\c
+.\}
+.el \{\
+.sp -1
+.IP \(bu 2.3
+.\}
+All the local subnets claimed by the nodes
+.RE
+.sp
+Its first byte marks the stage of the initial handshake process.
+The next 16 bytes contain the unique node id. After that,
+the list of local subnets follows.
+The subnet list is encoded in the following way: Its first byte of data
+contains the number of encoded subnets that follow. After that, the given
+number of encoded subnets follow.
+For each subnet, the first byte is the length of bytes in the base address
+and is followed by the given number of base address bytes and one additional
+byte that is the prefix length of the subnet.
+The addresses for the subnet will be encoded like they are encoded in their
+native protocol (4 bytes for IPv4, 16 bytes for IPv6, and 6 bytes for a MAC
+address) with the exception of MAC addresses in a VLan which will be encoded
+in 8 bytes where the first 2 bytes are the VLan number in network byte order
+and the later 6 bytes are the MAC address.
+.RE
+.sp
+\fBClosing message\fP (message type 3)
+.RS 4
+This packet does not contain any more data.
+.RE
+.sp
+Nodes are expected to send an \fBinitial message\fP with stage 0 whenever they
+connect to a node they were not connected to before. As a reply to this message,
+another initial should be sent with stage 1. Also a \fBpeer list\fP message should
+be sent as a reply.
+.sp
+When connected, nodes should periodically send their \fBpeer list\fP to all
+of their peers to spread this information and to avoid peer timeouts.
+To avoid the cubic growth of management traffic, nodes should at a certain
+network size start sending partial peer lists instead of the full list. A
+reasonable number would be about 20 peers. The subsets should be selected
+randomly.
+.sp
+Nodes should remove peers from their peer list after a certain period of
+inactivity or when receiving a \fBclosing message\fP. Before shutting down, nodes
+should send the closing message to all of their peers in order to avoid
+receiving further data until the timeout is reached.
+.sp
+Nodes should only add nodes to their peer list after receiving an initial
+message from them instead of adding them right from the peer list of another
+peer. This is necessary to avoid the case of a large network keeping dead nodes
+alive.
+.SH "COPYRIGHT"
+.sp
+Copyright \(co 2015\-2020  Dennis Schwerdel
+This software is licensed under GPL\-3 or newer (see LICENSE.md)

benches/.code.rs

@@ -1,77 +0,0 @@
-#[macro_use]
-mod util {
-    include!("../src/util.rs");
-}
-mod error {
-    include!("../src/error.rs");
-}
-mod payload {
-    include!("../src/payload.rs");
-}
-mod types {
-    include!("../src/types.rs");
-}
-mod table {
-    include!("../src/table.rs");
-}
-mod cloud {
-    include!("../src/cloud.rs");
-}
-mod config {
-    include!("../src/config.rs");
-}
-mod device {
-    include!("../src/device.rs");
-}
-mod net {
-    include!("../src/net.rs");
-}
-mod beacon {
-    include!("../src/beacon.rs");
-}
-mod messages {
-    include!("../src/messages.rs");
-}
-mod port_forwarding {
-    include!("../src/port_forwarding.rs");
-}
-mod traffic {
-    include!("../src/traffic.rs");
-}
-mod poll {
-    pub mod epoll{
-        include!("../src/poll/epoll.rs");
-    }
-    #[cfg(any(target_os = "linux", target_os = "android"))]
-    pub use self::epoll::EpollWait as WaitImpl;
-
-    use std::io;
-
-    pub enum WaitResult {
-        Timeout,
-        Socket,
-        Device,
-        Error(io::Error)
-    }
-}
-mod crypto {
-    pub mod core {
-        include!("../src/crypto/core.rs");
-    }
-    pub mod init {
-        include!("../src/crypto/init.rs");
-    }
-    pub mod rotate {
-        include!("../src/crypto/rotate.rs");
-    }
-    pub mod common {
-        include!("../src/crypto/common.rs");
-    }
-    pub use common::*;
-    pub use self::core::{EXTRA_LEN, TAG_LEN};
-}
-mod tests {
-    pub mod common {
-        include!("../src/tests/common.rs");
-    }
-}

benches/bench.rs

@@ -10,17 +10,31 @@ use ring::aead;
 use std::str::FromStr;
 use std::net::{SocketAddr, Ipv4Addr, SocketAddrV4, UdpSocket};
 
-include!(".code.rs");
+mod util {
+    include!("../src/util.rs");
+}
+mod error {
+    include!("../src/error.rs");
+}
+mod payload {
+    include!("../src/payload.rs");
+}
+mod types {
+    include!("../src/types.rs");
+}
+mod table {
+    include!("../src/table.rs");
+}
+mod crypto_core {
+    include!("../src/crypto/core.rs");
+}
 
 pub use error::Error;
 use util::{MockTimeSource, MsgBuffer};
 use types::{Address, Range};
 use table::{ClaimTable};
-use device::Type;
-use config::Config;
 use payload::{Packet, Frame, Protocol};
-use crypto::core::{create_dummy_pair, EXTRA_LEN};
+use crypto_core::{create_dummy_pair, EXTRA_LEN};
-use tests::common::{TunSimulator, TapSimulator};
 
 fn udp_send(c: &mut Criterion) {
     let sock = UdpSocket::bind("127.0.0.1:0").unwrap();
@@ -131,74 +145,5 @@ fn crypto_aes256(c: &mut Criterion) {
     crypto_bench(c, &aead::AES_256_GCM)
 }
 
-fn full_communication_tun_router(c: &mut Criterion) {
+criterion_group!(benches, udp_send, decode_ipv4, decode_ipv6, decode_ethernet, decode_ethernet_with_vlan, lookup_cold, lookup_warm, crypto_chacha20, crypto_aes128, crypto_aes256);
-    log::set_max_level(log::LevelFilter::Error);
-    let config1 = Config {
-        device_type: Type::Tun,
-        auto_claim: false,
-        claims: vec!["1.1.1.1/32".to_string()],
-        ..Config::default()
-    };
-    let config2 = Config {
-        device_type: Type::Tun,
-        auto_claim: false,
-        claims: vec!["2.2.2.2/32".to_string()],
-        ..Config::default()
-    };
-    let mut sim = TunSimulator::new();
-    let node1 = sim.add_node(false, &config1);
-    let node2 = sim.add_node(false, &config2);
-
-    sim.connect(node1, node2);
-    sim.simulate_all_messages();
-    assert!(sim.is_connected(node1, node2));
-    assert!(sim.is_connected(node2, node1));
-
-    let mut payload = vec![0x40, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 2, 2, 2, 2];
-    payload.append(&mut vec![0; 1400]);
-    let mut g = c.benchmark_group("full_communication");
-    g.throughput(Throughput::Bytes(2*1400));
-    g.bench_function("tun_router", |b| {
-        b.iter(|| {
-            sim.put_payload(node1, payload.clone());
-            sim.simulate_all_messages();
-            assert_eq!(Some(&payload), sim.pop_payload(node2).as_ref());
-        });
-    });
-    g.finish()
-}
-
-fn full_communication_tap_switch(c: &mut Criterion) {
-    log::set_max_level(log::LevelFilter::Error);    
-    let config = Config { device_type: Type::Tap, ..Config::default() };
-    let mut sim = TapSimulator::new();
-    let node1 = sim.add_node(false, &config);
-    let node2 = sim.add_node(false, &config);
-
-    sim.connect(node1, node2);
-    sim.simulate_all_messages();
-    assert!(sim.is_connected(node1, node2));
-    assert!(sim.is_connected(node2, node1));
-
-    let mut payload = vec![2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 2, 3, 4, 5];
-    payload.append(&mut vec![0; 1400]);
-    let mut g = c.benchmark_group("full_communication");
-    g.throughput(Throughput::Bytes(2*1400));
-    g.bench_function("tap_switch", |b| {
-        b.iter(|| {
-            sim.put_payload(node1, payload.clone());
-            sim.simulate_all_messages();
-            assert_eq!(Some(&payload), sim.pop_payload(node2).as_ref());
-        });
-    });
-    g.finish()
-}
-
-criterion_group!(benches, 
-    udp_send, 
-    decode_ipv4, decode_ipv6, decode_ethernet, decode_ethernet_with_vlan, 
-    lookup_cold, lookup_warm, 
-    crypto_chacha20, crypto_aes128, crypto_aes256,
-    full_communication_tun_router, full_communication_tap_switch
-);
 criterion_main!(benches);

benches/valgrind.rs

@@ -1,155 +0,0 @@
-#![allow(dead_code, unused_macros, unused_imports)]
-#[macro_use] extern crate serde;
-#[macro_use] extern crate log;
-
-use iai::{black_box, main};
-
-use smallvec::smallvec;
-use ring::aead;
-
-use std::str::FromStr;
-use std::net::{SocketAddr, Ipv4Addr, SocketAddrV4, UdpSocket};
-
-include!(".code.rs");
-
-pub use error::Error;
-use util::{MockTimeSource, MsgBuffer};
-use config::Config;
-use types::{Address, Range};
-use device::Type;
-use table::{ClaimTable};
-use payload::{Packet, Frame, Protocol};
-use crypto::core::{create_dummy_pair, EXTRA_LEN};
-use tests::common::{TunSimulator, TapSimulator};
-
-fn udp_send() {
-    let sock = UdpSocket::bind("127.0.0.1:0").unwrap();
-    let data = [0; 1400];
-    let addr = SocketAddrV4::new(Ipv4Addr::new(127, 0, 0, 1), 1);
-    sock.send_to(&data, &black_box(addr)).unwrap();
-}
-
-fn decode_ipv4() {
-    let data = [0x40, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 192, 168, 1, 1, 192, 168, 1, 2];
-    Packet::parse(&black_box(data)).unwrap();
-}
-
-fn decode_ipv6() {
-    let data = [
-        0x60, 0, 0, 0, 0, 0, 0, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 0, 1, 2, 3, 4, 5, 6, 0, 9, 8, 7, 6, 5, 4, 3, 2, 1, 6, 5,
-        4, 3, 2, 1
-    ];
-    Packet::parse(&black_box(data)).unwrap();
-}
-
-fn decode_ethernet() {
-    let data = [6, 5, 4, 3, 2, 1, 1, 2, 3, 4, 5, 6, 1, 2, 3, 4, 5, 6, 7, 8];
-    Frame::parse(&black_box(data)).unwrap();
-}
-
-fn decode_ethernet_with_vlan() {
-    let data = [6, 5, 4, 3, 2, 1, 1, 2, 3, 4, 5, 6, 0x81, 0, 4, 210, 1, 2, 3, 4, 5, 6, 7, 8];
-    Frame::parse(&black_box(data)).unwrap();
-}
-
-fn lookup_warm() {
-    let mut table = ClaimTable::<MockTimeSource>::new(60, 60);
-    let addr = Address::from_str("1.2.3.4").unwrap();
-    table.cache(addr, SocketAddr::from_str("1.2.3.4:3210").unwrap());
-    for _ in 0..1000 {
-        table.lookup(black_box(addr));
-    }
-}
-
-fn lookup_cold() {
-    let mut table = ClaimTable::<MockTimeSource>::new(60, 60);
-    let addr = Address::from_str("1.2.3.4").unwrap();
-    table.set_claims(SocketAddr::from_str("1.2.3.4:3210").unwrap(), smallvec![Range::from_str("1.2.3.4/32").unwrap()]);
-    for _ in 0..1000 {
-        table.clear_cache();
-        table.lookup(black_box(addr));
-    }
-}
-
-fn crypto_bench(algo: &'static aead::Algorithm) {
-    let mut buffer = MsgBuffer::new(EXTRA_LEN);
-    buffer.set_length(1400);
-    let (mut sender, mut receiver) = create_dummy_pair(algo);
-    for _ in 0..1000 {
-        sender.encrypt(black_box(&mut buffer));
-        receiver.decrypt(&mut buffer).unwrap();
-    }
-}
-
-fn crypto_chacha20() {
-    crypto_bench(&aead::CHACHA20_POLY1305)
-}
-
-fn crypto_aes128() {
-    crypto_bench(&aead::AES_128_GCM)
-}
-
-fn crypto_aes256() {
-    crypto_bench(&aead::AES_256_GCM)
-}
-
-fn full_communication_tun_router() {
-    log::set_max_level(log::LevelFilter::Error);
-    let config1 = Config {
-        device_type: Type::Tun,
-        auto_claim: false,
-        claims: vec!["1.1.1.1/32".to_string()],
-        ..Config::default()
-    };
-    let config2 = Config {
-        device_type: Type::Tun,
-        auto_claim: false,
-        claims: vec!["2.2.2.2/32".to_string()],
-        ..Config::default()
-    };
-    let mut sim = TunSimulator::new();
-    let node1 = sim.add_node(false, &config1);
-    let node2 = sim.add_node(false, &config2);
-
-    sim.connect(node1, node2);
-    sim.simulate_all_messages();
-    assert!(sim.is_connected(node1, node2));
-    assert!(sim.is_connected(node2, node1));
-
-    let mut payload = vec![0x40, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 2, 2, 2, 2];
-    payload.append(&mut vec![0; 1400]);
-    for _ in 0..1000 {
-        sim.put_payload(node1, payload.clone());
-        sim.simulate_all_messages();
-        assert_eq!(Some(&payload), black_box(sim.pop_payload(node2).as_ref()));
-    }
-}
-
-fn full_communication_tap_switch() {
-    log::set_max_level(log::LevelFilter::Error);
-    let config = Config { device_type: Type::Tap, ..Config::default() };
-    let mut sim = TapSimulator::new();
-    let node1 = sim.add_node(false, &config);
-    let node2 = sim.add_node(false, &config);
-
-    sim.connect(node1, node2);
-    sim.simulate_all_messages();
-    assert!(sim.is_connected(node1, node2));
-    assert!(sim.is_connected(node2, node1));
-
-    let mut payload = vec![2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 2, 3, 4, 5];
-    payload.append(&mut vec![0; 1400]);
-    for _ in 0..1000 {
-        sim.put_payload(node1, payload.clone());
-        sim.simulate_all_messages();
-        assert_eq!(Some(&payload), black_box(sim.pop_payload(node2).as_ref()));
-    }
-}
-
-iai::main!(
-    udp_send, 
-    decode_ipv4, decode_ipv6, decode_ethernet, decode_ethernet_with_vlan, 
-    lookup_cold, lookup_warm, 
-    crypto_chacha20, crypto_aes128, crypto_aes256,
-    full_communication_tun_router, full_communication_tap_switch
-);

build.rs

@@ -1,5 +1,5 @@
 // VpnCloud - Peer-to-Peer VPN
-// Copyright (C) 2015-2021  Dennis Schwerdel
+// Copyright (C) 2015-2020  Dennis Schwerdel
 // This software is licensed under GPL-3 or newer (see LICENSE.md)
 
 use std::{env, fs, path::Path, process::Command};

src/beacon.rs

@@ -1,5 +1,5 @@
 // VpnCloud - Peer-to-Peer VPN
-// Copyright (C) 2015-2021  Dennis Schwerdel
+// Copyright (C) 2019-2020  Dennis Schwerdel
 // This software is licensed under GPL-3 or newer (see LICENSE.md)
 
 use ring::digest;

src/cloud.rs

@@ -1,5 +1,5 @@
 // VpnCloud - Peer-to-Peer VPN
-// Copyright (C) 2015-2021  Dennis Schwerdel
+// Copyright (C) 2015-2020  Dennis Schwerdel
 // This software is licensed under GPL-3 or newer (see LICENSE.md)
 
 use std::{

src/config.rs

@@ -1,5 +1,5 @@
 // VpnCloud - Peer-to-Peer VPN
-// Copyright (C) 2015-2021  Dennis Schwerdel
+// Copyright (C) 2015-2020  Dennis Schwerdel
 // This software is licensed under GPL-3 or newer (see LICENSE.md)
 
 use super::{device::Type, types::Mode, util::Duration, util::run_cmd};
@@ -660,8 +660,43 @@ statsd:
 }
 
 #[test]
-fn parse_example_config() {
+fn default_config_as_default() {
+    let mut default_config = Config {
+        device_type: Type::Tun,
+        device_name: "".to_string(),
+        device_path: None,
+        fix_rp_filter: false,
+        ip: None,
+        ifup: None,
+        ifdown: None,
+        crypto: CryptoConfig::default(),
+        listen: "[::]:3210".to_string(),
+        peers: vec![],
+        peer_timeout: 0,
+        keepalive: None,
+        beacon_store: None,
+        beacon_load: None,
+        beacon_interval: 0,
+        beacon_password: None,
+        mode: Mode::Hub,
+        switch_timeout: 0,
+        claims: vec![],
+        auto_claim: true,
+        port_forwarding: true,
+        daemonize: false,
+        pid_file: None,
+        stats_file: None,
+        statsd_server: None,
+        statsd_prefix: None,
+        user: None,
+        group: None,
+        hook: None,
+        hooks: HashMap::new()
+    };
+    let default_config_file =
         serde_yaml::from_str::<ConfigFile>(include_str!("../assets/example.net.disabled")).unwrap();
+    default_config.merge_file(default_config_file);
+    assert_eq!(default_config, Config::default());
 }
 
 #[test]

src/crypto/common.rs

@@ -1,498 +0,0 @@
-use super::{
-    core::{test_speed, CryptoCore},
-    init::{self, InitResult, InitState, CLOSING},
-    rotate::RotationState
-};
-use crate::{
-    error::Error,
-    types::NodeId,
-    util::{from_base62, to_base62, MsgBuffer}
-};
-use ring::{
-    aead::{self, Algorithm, LessSafeKey, UnboundKey},
-    agreement::{EphemeralPrivateKey, UnparsedPublicKey},
-    pbkdf2,
-    rand::{SecureRandom, SystemRandom},
-    signature::{Ed25519KeyPair, KeyPair, ED25519_PUBLIC_KEY_LEN}
-};
-use smallvec::{smallvec, SmallVec};
-use std::{fmt::Debug, io::Read, num::NonZeroU32, sync::Arc, time::Duration};
-
-
-const SALT: &[u8; 32] = b"vpncloudVPNCLOUDvpncl0udVpnCloud";
-const INIT_MESSAGE_FIRST_BYTE: u8 = 0xff;
-const MESSAGE_TYPE_ROTATION: u8 = 0x10;
-
-pub type Ed25519PublicKey = [u8; ED25519_PUBLIC_KEY_LEN];
-pub type EcdhPublicKey = UnparsedPublicKey<SmallVec<[u8; 96]>>;
-pub type EcdhPrivateKey = EphemeralPrivateKey;
-pub type Key = SmallVec<[u8; 32]>;
-
-
-const DEFAULT_ALGORITHMS: [&str; 3] = ["AES128", "AES256", "CHACHA20"];
-
-#[cfg(test)]
-const SPEED_TEST_TIME: f32 = 0.02;
-#[cfg(not(test))]
-const SPEED_TEST_TIME: f32 = 0.1;
-
-const ROTATE_INTERVAL: usize = 120;
-
-
-pub trait Payload: Debug + PartialEq + Sized {
-    fn write_to(&self, buffer: &mut MsgBuffer);
-    fn read_from<R: Read>(r: R) -> Result<Self, Error>;
-}
-
-
-#[derive(Clone)]
-pub struct Algorithms {
-    pub algorithm_speeds: SmallVec<[(&'static Algorithm, f32); 3]>,
-    pub allow_unencrypted: bool
-}
-
-#[derive(Debug, Default, Deserialize, Serialize, Clone, PartialEq)]
-#[serde(rename_all = "kebab-case", deny_unknown_fields, default)]
-pub struct Config {
-    pub password: Option<String>,
-    pub private_key: Option<String>,
-    pub public_key: Option<String>,
-    pub trusted_keys: Vec<String>,
-    pub algorithms: Vec<String>
-}
-
-pub struct Crypto {
-    node_id: NodeId,
-    key_pair: Arc<Ed25519KeyPair>,
-    trusted_keys: Arc<[Ed25519PublicKey]>,
-    algorithms: Algorithms
-}
-
-impl Crypto {
-    pub fn new(node_id: NodeId, config: &Config) -> Result<Self, Error> {
-        let key_pair = if let Some(priv_key) = &config.private_key {
-            if let Some(pub_key) = &config.public_key {
-                Self::parse_keypair(priv_key, pub_key)?
-            } else {
-                Self::parse_private_key(priv_key)?
-            }
-        } else if let Some(password) = &config.password {
-            Self::keypair_from_password(password)
-        } else {
-            return Err(Error::InvalidConfig("Either private_key or password must be set"))
-        };
-        let mut trusted_keys = vec![];
-        for tn in &config.trusted_keys {
-            trusted_keys.push(Self::parse_public_key(tn)?);
-        }
-        if trusted_keys.is_empty() {
-            info!("Trusted keys not set, trusting only own public key");
-            let mut key = [0; ED25519_PUBLIC_KEY_LEN];
-            key.clone_from_slice(key_pair.public_key().as_ref());
-            trusted_keys.push(key);
-        }
-        let mut algos = Algorithms { algorithm_speeds: smallvec![], allow_unencrypted: false };
-        let algorithms = config.algorithms.iter().map(|a| a as &str).collect::<Vec<_>>();
-        let allowed = if algorithms.is_empty() { &DEFAULT_ALGORITHMS } else { &algorithms as &[&str] };
-        let duration = Duration::from_secs_f32(SPEED_TEST_TIME);
-        let mut speeds = Vec::new();
-        for name in allowed {
-            let algo = match &name.to_uppercase() as &str {
-                "UNENCRYPTED" | "NONE" | "PLAIN" => {
-                    algos.allow_unencrypted = true;
-                    warn!("Crypto settings allow unencrypted connections");
-                    continue
-                }
-                "AES128" | "AES128_GCM" | "AES_128" | "AES_128_GCM" => &aead::AES_128_GCM,
-                "AES256" | "AES256_GCM" | "AES_256" | "AES_256_GCM" => &aead::AES_256_GCM,
-                "CHACHA" | "CHACHA20" | "CHACHA20_POLY1305" => &aead::CHACHA20_POLY1305,
-                _ => return Err(Error::InvalidConfig("Unknown crypto method"))
-            };
-            let speed = test_speed(algo, &duration);
-            algos.algorithm_speeds.push((algo, speed as f32));
-            speeds.push((name, speed as f32));
-        }
-        if !speeds.is_empty() {
-            info!(
-                "Crypto speeds: {}",
-                speeds.into_iter().map(|(a, s)| format!("{}: {:.1} MiB/s", a, s)).collect::<Vec<_>>().join(", ")
-            );
-        }
-        Ok(Self {
-            node_id,
-            key_pair: Arc::new(key_pair),
-            trusted_keys: trusted_keys.into_boxed_slice().into(),
-            algorithms: algos
-        })
-    }
-
-    pub fn generate_keypair(password: Option<&str>) -> (String, String) {
-        let mut bytes = [0; 32];
-        match password {
-            None => {
-                let rng = SystemRandom::new();
-                rng.fill(&mut bytes).unwrap();
-            }
-            Some(password) => {
-                pbkdf2::derive(
-                    pbkdf2::PBKDF2_HMAC_SHA256,
-                    NonZeroU32::new(4096).unwrap(),
-                    SALT,
-                    password.as_bytes(),
-                    &mut bytes
-                );
-            }
-        }
-        let keypair = Ed25519KeyPair::from_seed_unchecked(&bytes).unwrap();
-        let privkey = to_base62(&bytes);
-        let pubkey = to_base62(keypair.public_key().as_ref());
-        (privkey, pubkey)
-    }
-
-    fn keypair_from_password(password: &str) -> Ed25519KeyPair {
-        let mut key = [0; 32];
-        pbkdf2::derive(pbkdf2::PBKDF2_HMAC_SHA256, NonZeroU32::new(4096).unwrap(), SALT, password.as_bytes(), &mut key);
-        Ed25519KeyPair::from_seed_unchecked(&key).unwrap()
-    }
-
-    fn parse_keypair(privkey: &str, pubkey: &str) -> Result<Ed25519KeyPair, Error> {
-        let privkey = from_base62(privkey).map_err(|_| Error::InvalidConfig("Failed to parse private key"))?;
-        let pubkey = from_base62(pubkey).map_err(|_| Error::InvalidConfig("Failed to parse public key"))?;
-        let keypair = Ed25519KeyPair::from_seed_and_public_key(&privkey, &pubkey)
-            .map_err(|_| Error::InvalidConfig("Keys rejected by crypto library"))?;
-        Ok(keypair)
-    }
-
-    fn parse_private_key(privkey: &str) -> Result<Ed25519KeyPair, Error> {
-        let privkey = from_base62(privkey).map_err(|_| Error::InvalidConfig("Failed to parse private key"))?;
-        let keypair = Ed25519KeyPair::from_seed_unchecked(&privkey)
-            .map_err(|_| Error::InvalidConfig("Key rejected by crypto library"))?;
-        Ok(keypair)
-    }
-
-    fn parse_public_key(pubkey: &str) -> Result<Ed25519PublicKey, Error> {
-        let pubkey = from_base62(pubkey).map_err(|_| Error::InvalidConfig("Failed to parse public key"))?;
-        if pubkey.len() != ED25519_PUBLIC_KEY_LEN {
-            return Err(Error::InvalidConfig("Failed to parse public key"))
-        }
-        let mut result = [0; ED25519_PUBLIC_KEY_LEN];
-        result.clone_from_slice(&pubkey);
-        Ok(result)
-    }
-
-    pub fn peer_instance<P: Payload>(&self, payload: P) -> PeerCrypto<P> {
-        PeerCrypto::new(
-            self.node_id,
-            payload,
-            self.key_pair.clone(),
-            self.trusted_keys.clone(),
-            self.algorithms.clone()
-        )
-    }
-}
-
-
-#[derive(Debug, PartialEq)]
-pub enum MessageResult<P: Payload> {
-    Message(u8),
-    Initialized(P),
-    InitializedWithReply(P),
-    Reply,
-    None
-}
-
-
-pub struct PeerCrypto<P: Payload> {
-    #[allow(dead_code)]
-    node_id: NodeId,
-    init: Option<InitState<P>>,
-    rotation: Option<RotationState>,
-    unencrypted: bool,
-    core: Option<CryptoCore>,
-    rotate_counter: usize
-}
-
-impl<P: Payload> PeerCrypto<P> {
-    pub fn new(
-        node_id: NodeId, init_payload: P, key_pair: Arc<Ed25519KeyPair>, trusted_keys: Arc<[Ed25519PublicKey]>,
-        algorithms: Algorithms
-    ) -> Self
-    {
-        Self {
-            node_id,
-            init: Some(InitState::new(node_id, init_payload, key_pair, trusted_keys, algorithms)),
-            rotation: None,
-            unencrypted: false,
-            core: None,
-            rotate_counter: 0
-        }
-    }
-
-    fn get_init(&mut self) -> Result<&mut InitState<P>, Error> {
-        if let Some(init) = &mut self.init {
-            Ok(init)
-        } else {
-            Err(Error::InvalidCryptoState("Initialization already finished"))
-        }
-    }
-
-    fn get_core(&mut self) -> Result<&mut CryptoCore, Error> {
-        if let Some(core) = &mut self.core {
-            Ok(core)
-        } else {
-            Err(Error::InvalidCryptoState("Crypto core not ready yet"))
-        }
-    }
-
-    fn get_rotation(&mut self) -> Result<&mut RotationState, Error> {
-        if let Some(rotation) = &mut self.rotation {
-            Ok(rotation)
-        } else {
-            Err(Error::InvalidCryptoState("Key rotation not initialized"))
-        }
-    }
-
-    pub fn initialize(&mut self, out: &mut MsgBuffer) -> Result<(), Error> {
-        let init = self.get_init()?;
-        if init.stage() != init::STAGE_PING {
-            Err(Error::InvalidCryptoState("Initialization already ongoing"))
-        } else {
-            init.send_ping(out);
-            out.prepend_byte(INIT_MESSAGE_FIRST_BYTE);
-            Ok(())
-        }
-    }
-
-    pub fn has_init(&self) -> bool {
-        self.init.is_some()
-    }
-
-    pub fn is_ready(&self) -> bool {
-        self.core.is_some()
-    }
-
-    pub fn algorithm_name(&self) -> &'static str {
-        if let Some(ref core) = self.core {
-            let algo = core.algorithm();
-            if algo == &aead::CHACHA20_POLY1305 {
-                "CHACHA20"
-            } else if algo == &aead::AES_128_GCM {
-                "AES128"
-            } else if algo == &aead::AES_256_GCM {
-                "AES256"
-            } else {
-                unreachable!()
-            }
-        } else {
-            "PLAIN"
-        }
-    }
-
-    fn handle_init_message(&mut self, buffer: &mut MsgBuffer) -> Result<MessageResult<P>, Error> {
-        let result = self.get_init()?.handle_init(buffer)?;
-        if !buffer.is_empty() {
-            buffer.prepend_byte(INIT_MESSAGE_FIRST_BYTE);
-        }
-        match result {
-            InitResult::Continue => Ok(MessageResult::Reply),
-            InitResult::Success { peer_payload, is_initiator } => {
-                self.core = self.get_init()?.take_core();
-                if self.core.is_none() {
-                    self.unencrypted = true;
-                }
-                if self.get_init()?.stage() == init::CLOSING {
-                    self.init = None
-                }
-                if self.core.is_some() {
-                    self.rotation = Some(RotationState::new(!is_initiator, buffer));
-                }
-                if !is_initiator {
-                    if self.unencrypted {
-                        return Ok(MessageResult::Initialized(peer_payload))
-                    }
-                    assert!(!buffer.is_empty());
-                    buffer.prepend_byte(MESSAGE_TYPE_ROTATION);
-                    self.encrypt_message(buffer)?;
-                }
-                Ok(MessageResult::InitializedWithReply(peer_payload))
-            }
-        }
-    }
-
-    fn handle_rotate_message(&mut self, data: &[u8]) -> Result<(), Error> {
-        if self.unencrypted {
-            return Ok(())
-        }
-        if let Some(rot) = self.get_rotation()?.handle_message(data)? {
-            let core = self.get_core()?;
-            let algo = core.algorithm();
-            let key = LessSafeKey::new(UnboundKey::new(algo, &rot.key[..algo.key_len()]).unwrap());
-            core.rotate_key(key, rot.id, rot.use_for_sending);
-        }
-        Ok(())
-    }
-
-    fn encrypt_message(&mut self, buffer: &mut MsgBuffer) -> Result<(), Error> {
-        if self.unencrypted {
-            return Ok(())
-        }
-        self.get_core()?.encrypt(buffer);
-        Ok(())
-    }
-
-    fn decrypt_message(&mut self, buffer: &mut MsgBuffer) -> Result<(), Error> {
-        // HOT PATH
-        if self.unencrypted {
-            return Ok(())
-        }
-        self.get_core()?.decrypt(buffer)
-    }
-
-    pub fn handle_message(&mut self, buffer: &mut MsgBuffer) -> Result<MessageResult<P>, Error> {
-        // HOT PATH
-        if buffer.is_empty() {
-            return Err(Error::InvalidCryptoState("No message in buffer"))
-        }
-        if is_init_message(buffer.buffer()) {
-            // COLD PATH
-            debug!("Received init message");
-            buffer.take_prefix();
-            self.handle_init_message(buffer)
-        } else {
-            // HOT PATH
-            debug!("Received encrypted message");
-            self.decrypt_message(buffer)?;
-            let msg_type = buffer.take_prefix();
-            if msg_type == MESSAGE_TYPE_ROTATION {
-                // COLD PATH
-                debug!("Received rotation message");
-                self.handle_rotate_message(buffer.buffer())?;
-                buffer.clear();
-                Ok(MessageResult::None)
-            } else {
-                Ok(MessageResult::Message(msg_type))
-            }
-        }
-    }
-
-    pub fn send_message(&mut self, type_: u8, buffer: &mut MsgBuffer) -> Result<(), Error> {
-        // HOT PATH
-        assert_ne!(type_, MESSAGE_TYPE_ROTATION);
-        buffer.prepend_byte(type_);
-        self.encrypt_message(buffer)
-    }
-
-    pub fn every_second(&mut self, out: &mut MsgBuffer) -> Result<MessageResult<P>, Error> {
-        out.clear();
-        if let Some(ref mut core) = self.core {
-            core.every_second()
-        }
-        if let Some(ref mut init) = self.init {
-            init.every_second(out)?;
-        }
-        if self.init.as_ref().map(|i| i.stage()).unwrap_or(CLOSING) == CLOSING {
-            self.init = None
-        }
-        if !out.is_empty() {
-            out.prepend_byte(INIT_MESSAGE_FIRST_BYTE);
-            return Ok(MessageResult::Reply)
-        }
-        if let Some(ref mut rotate) = self.rotation {
-            self.rotate_counter += 1;
-            if self.rotate_counter >= ROTATE_INTERVAL {
-                self.rotate_counter = 0;
-                if let Some(rot) = rotate.cycle(out) {
-                    let core = self.get_core()?;
-                    let algo = core.algorithm();
-                    let key = LessSafeKey::new(UnboundKey::new(algo, &rot.key[..algo.key_len()]).unwrap());
-                    core.rotate_key(key, rot.id, rot.use_for_sending);
-                }
-                if !out.is_empty() {
-                    out.prepend_byte(MESSAGE_TYPE_ROTATION);
-                    self.encrypt_message(out)?;
-                    return Ok(MessageResult::Reply)
-                }
-            }
-        }
-        Ok(MessageResult::None)
-    }
-}
-
-pub fn is_init_message(msg: &[u8]) -> bool {
-    // HOT PATH
-    !msg.is_empty() && msg[0] == INIT_MESSAGE_FIRST_BYTE
-}
-
-
-#[cfg(test)]
-mod tests {
-    use super::*;
-
-    use crate::types::NODE_ID_BYTES;
-
-    fn create_node(config: &Config) -> PeerCrypto<Vec<u8>> {
-        let rng = SystemRandom::new();
-        let mut node_id = [0; NODE_ID_BYTES];
-        rng.fill(&mut node_id).unwrap();
-        let crypto = Crypto::new(node_id, config).unwrap();
-        crypto.peer_instance(vec![])
-    }
-
-    #[test]
-    fn normal() {
-        let config = Config { password: Some("test".to_string()), ..Default::default() };
-        let mut node1 = create_node(&config);
-        let mut node2 = create_node(&config);
-        let mut msg = MsgBuffer::new(16);
-
-        node1.initialize(&mut msg).unwrap();
-        assert!(!msg.is_empty());
-
-        debug!("Node1 -> Node2");
-        let res = node2.handle_message(&mut msg).unwrap();
-        assert_eq!(res, MessageResult::Reply);
-        assert!(!msg.is_empty());
-
-        debug!("Node1 <- Node2");
-        let res = node1.handle_message(&mut msg).unwrap();
-        assert_eq!(res, MessageResult::InitializedWithReply(vec![]));
-        assert!(!msg.is_empty());
-
-        debug!("Node1 -> Node2");
-        let res = node2.handle_message(&mut msg).unwrap();
-        assert_eq!(res, MessageResult::InitializedWithReply(vec![]));
-        assert!(!msg.is_empty());
-
-        debug!("Node1 <- Node2");
-        let res = node1.handle_message(&mut msg).unwrap();
-        assert_eq!(res, MessageResult::None);
-        assert!(msg.is_empty());
-
-        let mut buffer = MsgBuffer::new(16);
-        let rng = SystemRandom::new();
-        buffer.set_length(1000);
-        rng.fill(buffer.message_mut()).unwrap();
-        for _ in 0..1000 {
-            node1.send_message(1, &mut buffer).unwrap();
-            let res = node2.handle_message(&mut buffer).unwrap();
-            assert_eq!(res, MessageResult::Message(1));
-
-            match node1.every_second(&mut msg).unwrap() {
-                MessageResult::None => (),
-                MessageResult::Reply => {
-                    let res = node2.handle_message(&mut msg).unwrap();
-                    assert_eq!(res, MessageResult::None);
-                }
-                other => assert_eq!(other, MessageResult::None)
-            }
-            match node2.every_second(&mut msg).unwrap() {
-                MessageResult::None => (),
-                MessageResult::Reply => {
-                    let res = node1.handle_message(&mut msg).unwrap();
-                    assert_eq!(res, MessageResult::None);
-                }
-                other => assert_eq!(other, MessageResult::None)
-            }
-        }
-    }
-}

src/crypto/core.rs

@@ -1,7 +1,3 @@
-// VpnCloud - Peer-to-Peer VPN
-// Copyright (C) 2015-2021  Dennis Schwerdel
-// This software is licensed under GPL-3 or newer (see LICENSE.md)
-
 // This module implements a crypto core for encrypting and decrypting message streams
 //
 // The crypto core only encrypts and decrypts messages, using given keys. Negotiating and rotating the keys is out of
@@ -53,7 +49,7 @@ use std::{
     time::{Duration, Instant}
 };
 
-use crate::{error::Error, util::MsgBuffer};
+use super::{Error, MsgBuffer};
 
 
 const NONCE_LEN: usize = 12;

src/crypto/init.rs

@@ -1,7 +1,3 @@
-// VpnCloud - Peer-to-Peer VPN
-// Copyright (C) 2015-2021  Dennis Schwerdel
-// This software is licensed under GPL-3 or newer (see LICENSE.md)
-
 // This module implements a 3-way handshake to initialize an authenticated and encrypted connection.
 //
 // The handshake assumes that each node has a asymmetric Curve 25519 key pair as well as a list of trusted public keys
@@ -57,9 +53,9 @@
 
 use super::{
     core::{CryptoCore, EXTRA_LEN},
-    Algorithms, EcdhPrivateKey, EcdhPublicKey, Ed25519PublicKey, Payload
+    Algorithms, EcdhPrivateKey, EcdhPublicKey, Ed25519PublicKey, Error, MsgBuffer, Payload
 };
-use crate::{error::Error, types::NodeId, util::MsgBuffer};
+use crate::types::NodeId;
 use byteorder::{NetworkEndian, ReadBytesExt, WriteBytesExt};
 use ring::{
     aead::{Algorithm, LessSafeKey, UnboundKey, AES_128_GCM, AES_256_GCM, CHACHA20_POLY1305},
@@ -404,7 +400,8 @@ impl<P: Payload> InitState<P> {
     pub fn new(
         node_id: NodeId, payload: P, key_pair: Arc<Ed25519KeyPair>, trusted_keys: Arc<[Ed25519PublicKey]>,
         algorithms: Algorithms
-    ) -> Self {
+    ) -> Self
+    {
         let mut hash = [0; SALTED_NODE_ID_HASH_LEN];
         let rng = SystemRandom::new();
         rng.fill(&mut hash[0..4]).unwrap();

src/crypto/mod.rs

@@ -1,11 +1,504 @@
-// VpnCloud - Peer-to-Peer VPN
-// Copyright (C) 2015-2021  Dennis Schwerdel
-// This software is licensed under GPL-3 or newer (see LICENSE.md)
-
-mod common;
 mod core;
 mod init;
 mod rotate;
 
-pub use common::*;
 pub use self::core::{EXTRA_LEN, TAG_LEN};
+use self::{
+    core::{test_speed, CryptoCore},
+    init::{InitResult, InitState, CLOSING},
+    rotate::RotationState
+};
+use crate::{
+    error::Error,
+    types::NodeId,
+    util::{from_base62, to_base62, MsgBuffer}
+};
+use ring::{
+    aead::{self, Algorithm, LessSafeKey, UnboundKey},
+    agreement::{EphemeralPrivateKey, UnparsedPublicKey},
+    pbkdf2,
+    rand::{SecureRandom, SystemRandom},
+    signature::{Ed25519KeyPair, KeyPair, ED25519_PUBLIC_KEY_LEN}
+};
+use smallvec::{smallvec, SmallVec};
+use std::{fmt::Debug, io::Read, num::NonZeroU32, sync::Arc, time::Duration};
+use thiserror::Error;
+
+
+const SALT: &[u8; 32] = b"vpncloudVPNCLOUDvpncl0udVpnCloud";
+const INIT_MESSAGE_FIRST_BYTE: u8 = 0xff;
+const MESSAGE_TYPE_ROTATION: u8 = 0x10;
+
+pub type Ed25519PublicKey = [u8; ED25519_PUBLIC_KEY_LEN];
+pub type EcdhPublicKey = UnparsedPublicKey<SmallVec<[u8; 96]>>;
+pub type EcdhPrivateKey = EphemeralPrivateKey;
+pub type Key = SmallVec<[u8; 32]>;
+
+
+const DEFAULT_ALGORITHMS: [&str; 3] = ["AES128", "AES256", "CHACHA20"];
+
+#[cfg(test)]
+const SPEED_TEST_TIME: f32 = 0.02;
+#[cfg(not(test))]
+const SPEED_TEST_TIME: f32 = 0.1;
+
+const ROTATE_INTERVAL: usize = 120;
+
+
+pub trait Payload: Debug + PartialEq + Sized {
+    fn write_to(&self, buffer: &mut MsgBuffer);
+    fn read_from<R: Read>(r: R) -> Result<Self, Error>;
+}
+
+
+#[derive(Clone)]
+pub struct Algorithms {
+    pub algorithm_speeds: SmallVec<[(&'static Algorithm, f32); 3]>,
+    pub allow_unencrypted: bool
+}
+
+#[derive(Debug, Default, Deserialize, Serialize, Clone, PartialEq)]
+#[serde(rename_all = "kebab-case", deny_unknown_fields, default)]
+pub struct Config {
+    pub password: Option<String>,
+    pub private_key: Option<String>,
+    pub public_key: Option<String>,
+    pub trusted_keys: Vec<String>,
+    pub algorithms: Vec<String>
+}
+
+pub struct Crypto {
+    node_id: NodeId,
+    key_pair: Arc<Ed25519KeyPair>,
+    trusted_keys: Arc<[Ed25519PublicKey]>,
+    algorithms: Algorithms
+}
+
+impl Crypto {
+    pub fn new(node_id: NodeId, config: &Config) -> Result<Self, Error> {
+        let key_pair = if let Some(priv_key) = &config.private_key {
+            if let Some(pub_key) = &config.public_key {
+                Self::parse_keypair(priv_key, pub_key)?
+            } else {
+                Self::parse_private_key(priv_key)?
+            }
+        } else if let Some(password) = &config.password {
+            Self::keypair_from_password(password)
+        } else {
+            return Err(Error::InvalidConfig("Either private_key or password must be set"))
+        };
+        let mut trusted_keys = vec![];
+        for tn in &config.trusted_keys {
+            trusted_keys.push(Self::parse_public_key(tn)?);
+        }
+        if trusted_keys.is_empty() {
+            info!("Trusted keys not set, trusting only own public key");
+            let mut key = [0; ED25519_PUBLIC_KEY_LEN];
+            key.clone_from_slice(key_pair.public_key().as_ref());
+            trusted_keys.push(key);
+        }
+        let mut algos = Algorithms { algorithm_speeds: smallvec![], allow_unencrypted: false };
+        let algorithms = config.algorithms.iter().map(|a| a as &str).collect::<Vec<_>>();
+        let allowed = if algorithms.is_empty() { &DEFAULT_ALGORITHMS } else { &algorithms as &[&str] };
+        let duration = Duration::from_secs_f32(SPEED_TEST_TIME);
+        let mut speeds = Vec::new();
+        for name in allowed {
+            let algo = match &name.to_uppercase() as &str {
+                "UNENCRYPTED" | "NONE" | "PLAIN" => {
+                    algos.allow_unencrypted = true;
+                    warn!("Crypto settings allow unencrypted connections");
+                    continue
+                }
+                "AES128" | "AES128_GCM" | "AES_128" | "AES_128_GCM" => &aead::AES_128_GCM,
+                "AES256" | "AES256_GCM" | "AES_256" | "AES_256_GCM" => &aead::AES_256_GCM,
+                "CHACHA" | "CHACHA20" | "CHACHA20_POLY1305" => &aead::CHACHA20_POLY1305,
+                _ => return Err(Error::InvalidConfig("Unknown crypto method"))
+            };
+            let speed = test_speed(algo, &duration);
+            algos.algorithm_speeds.push((algo, speed as f32));
+            speeds.push((name, speed as f32));
+        }
+        if !speeds.is_empty() {
+            info!(
+                "Crypto speeds: {}",
+                speeds.into_iter().map(|(a, s)| format!("{}: {:.1} MiB/s", a, s)).collect::<Vec<_>>().join(", ")
+            );
+        }
+        Ok(Self {
+            node_id,
+            key_pair: Arc::new(key_pair),
+            trusted_keys: trusted_keys.into_boxed_slice().into(),
+            algorithms: algos
+        })
+    }
+
+    pub fn generate_keypair(password: Option<&str>) -> (String, String) {
+        let mut bytes = [0; 32];
+        match password {
+            None => {
+                let rng = SystemRandom::new();
+                rng.fill(&mut bytes).unwrap();
+            }
+            Some(password) => {
+                pbkdf2::derive(
+                    pbkdf2::PBKDF2_HMAC_SHA256,
+                    NonZeroU32::new(4096).unwrap(),
+                    SALT,
+                    password.as_bytes(),
+                    &mut bytes
+                );
+            }
+        }
+        let keypair = Ed25519KeyPair::from_seed_unchecked(&bytes).unwrap();
+        let privkey = to_base62(&bytes);
+        let pubkey = to_base62(keypair.public_key().as_ref());
+        (privkey, pubkey)
+    }
+
+    fn keypair_from_password(password: &str) -> Ed25519KeyPair {
+        let mut key = [0; 32];
+        pbkdf2::derive(pbkdf2::PBKDF2_HMAC_SHA256, NonZeroU32::new(4096).unwrap(), SALT, password.as_bytes(), &mut key);
+        Ed25519KeyPair::from_seed_unchecked(&key).unwrap()
+    }
+
+    fn parse_keypair(privkey: &str, pubkey: &str) -> Result<Ed25519KeyPair, Error> {
+        let privkey = from_base62(privkey).map_err(|_| Error::InvalidConfig("Failed to parse private key"))?;
+        let pubkey = from_base62(pubkey).map_err(|_| Error::InvalidConfig("Failed to parse public key"))?;
+        let keypair = Ed25519KeyPair::from_seed_and_public_key(&privkey, &pubkey)
+            .map_err(|_| Error::InvalidConfig("Keys rejected by crypto library"))?;
+        Ok(keypair)
+    }
+
+    fn parse_private_key(privkey: &str) -> Result<Ed25519KeyPair, Error> {
+        let privkey = from_base62(privkey).map_err(|_| Error::InvalidConfig("Failed to parse private key"))?;
+        let keypair = Ed25519KeyPair::from_seed_unchecked(&privkey)
+            .map_err(|_| Error::InvalidConfig("Key rejected by crypto library"))?;
+        Ok(keypair)
+    }
+
+    fn parse_public_key(pubkey: &str) -> Result<Ed25519PublicKey, Error> {
+        let pubkey = from_base62(pubkey).map_err(|_| Error::InvalidConfig("Failed to parse public key"))?;
+        if pubkey.len() != ED25519_PUBLIC_KEY_LEN {
+            return Err(Error::InvalidConfig("Failed to parse public key"))
+        }
+        let mut result = [0; ED25519_PUBLIC_KEY_LEN];
+        result.clone_from_slice(&pubkey);
+        Ok(result)
+    }
+
+    pub fn peer_instance<P: Payload>(&self, payload: P) -> PeerCrypto<P> {
+        PeerCrypto::new(
+            self.node_id,
+            payload,
+            self.key_pair.clone(),
+            self.trusted_keys.clone(),
+            self.algorithms.clone()
+        )
+    }
+}
+
+
+#[derive(Debug, PartialEq)]
+pub enum MessageResult<P: Payload> {
+    Message(u8),
+    Initialized(P),
+    InitializedWithReply(P),
+    Reply,
+    None
+}
+
+
+pub struct PeerCrypto<P: Payload> {
+    #[allow(dead_code)]
+    node_id: NodeId,
+    init: Option<InitState<P>>,
+    rotation: Option<RotationState>,
+    unencrypted: bool,
+    core: Option<CryptoCore>,
+    rotate_counter: usize
+}
+
+impl<P: Payload> PeerCrypto<P> {
+    pub fn new(
+        node_id: NodeId, init_payload: P, key_pair: Arc<Ed25519KeyPair>, trusted_keys: Arc<[Ed25519PublicKey]>,
+        algorithms: Algorithms
+    ) -> Self
+    {
+        Self {
+            node_id,
+            init: Some(InitState::new(node_id, init_payload, key_pair, trusted_keys, algorithms)),
+            rotation: None,
+            unencrypted: false,
+            core: None,
+            rotate_counter: 0
+        }
+    }
+
+    fn get_init(&mut self) -> Result<&mut InitState<P>, Error> {
+        if let Some(init) = &mut self.init {
+            Ok(init)
+        } else {
+            Err(Error::InvalidCryptoState("Initialization already finished"))
+        }
+    }
+
+    fn get_core(&mut self) -> Result<&mut CryptoCore, Error> {
+        if let Some(core) = &mut self.core {
+            Ok(core)
+        } else {
+            Err(Error::InvalidCryptoState("Crypto core not ready yet"))
+        }
+    }
+
+    fn get_rotation(&mut self) -> Result<&mut RotationState, Error> {
+        if let Some(rotation) = &mut self.rotation {
+            Ok(rotation)
+        } else {
+            Err(Error::InvalidCryptoState("Key rotation not initialized"))
+        }
+    }
+
+    pub fn initialize(&mut self, out: &mut MsgBuffer) -> Result<(), Error> {
+        let init = self.get_init()?;
+        if init.stage() != init::STAGE_PING {
+            Err(Error::InvalidCryptoState("Initialization already ongoing"))
+        } else {
+            init.send_ping(out);
+            out.prepend_byte(INIT_MESSAGE_FIRST_BYTE);
+            Ok(())
+        }
+    }
+
+    pub fn has_init(&self) -> bool {
+        self.init.is_some()
+    }
+
+    pub fn is_ready(&self) -> bool {
+        self.core.is_some()
+    }
+
+    pub fn algorithm_name(&self) -> &'static str {
+        if let Some(ref core) = self.core {
+            let algo = core.algorithm();
+            if algo == &aead::CHACHA20_POLY1305 {
+                "CHACHA20"
+            } else if algo == &aead::AES_128_GCM {
+                "AES128"
+            } else if algo == &aead::AES_256_GCM {
+                "AES256"
+            } else {
+                unreachable!()
+            }
+        } else {
+            "PLAIN"
+        }
+    }
+
+    fn handle_init_message(&mut self, buffer: &mut MsgBuffer) -> Result<MessageResult<P>, Error> {
+        let result = self.get_init()?.handle_init(buffer)?;
+        if !buffer.is_empty() {
+            buffer.prepend_byte(INIT_MESSAGE_FIRST_BYTE);
+        }
+        match result {
+            InitResult::Continue => Ok(MessageResult::Reply),
+            InitResult::Success { peer_payload, is_initiator } => {
+                self.core = self.get_init()?.take_core();
+                if self.core.is_none() {
+                    self.unencrypted = true;
+                }
+                if self.get_init()?.stage() == init::CLOSING {
+                    self.init = None
+                }
+                if self.core.is_some() {
+                    self.rotation = Some(RotationState::new(!is_initiator, buffer));
+                }
+                if !is_initiator {
+                    if self.unencrypted {
+                        return Ok(MessageResult::Initialized(peer_payload))
+                    }
+                    assert!(!buffer.is_empty());
+                    buffer.prepend_byte(MESSAGE_TYPE_ROTATION);
+                    self.encrypt_message(buffer)?;
+                }
+                Ok(MessageResult::InitializedWithReply(peer_payload))
+            }
+        }
+    }
+
+    fn handle_rotate_message(&mut self, data: &[u8]) -> Result<(), Error> {
+        if self.unencrypted {
+            return Ok(())
+        }
+        if let Some(rot) = self.get_rotation()?.handle_message(data)? {
+            let core = self.get_core()?;
+            let algo = core.algorithm();
+            let key = LessSafeKey::new(UnboundKey::new(algo, &rot.key[..algo.key_len()]).unwrap());
+            core.rotate_key(key, rot.id, rot.use_for_sending);
+        }
+        Ok(())
+    }
+
+    fn encrypt_message(&mut self, buffer: &mut MsgBuffer) -> Result<(), Error> {
+        if self.unencrypted {
+            return Ok(())
+        }
+        self.get_core()?.encrypt(buffer);
+        Ok(())
+    }
+
+    fn decrypt_message(&mut self, buffer: &mut MsgBuffer) -> Result<(), Error> {
+        // HOT PATH
+        if self.unencrypted {
+            return Ok(())
+        }
+        self.get_core()?.decrypt(buffer)
+    }
+
+    pub fn handle_message(&mut self, buffer: &mut MsgBuffer) -> Result<MessageResult<P>, Error> {
+        // HOT PATH
+        if buffer.is_empty() {
+            return Err(Error::InvalidCryptoState("No message in buffer"))
+        }
+        if is_init_message(buffer.buffer()) {
+            // COLD PATH
+            debug!("Received init message");
+            buffer.take_prefix();
+            self.handle_init_message(buffer)
+        } else {
+            // HOT PATH
+            debug!("Received encrypted message");
+            self.decrypt_message(buffer)?;
+            let msg_type = buffer.take_prefix();
+            if msg_type == MESSAGE_TYPE_ROTATION {
+                // COLD PATH
+                debug!("Received rotation message");
+                self.handle_rotate_message(buffer.buffer())?;
+                buffer.clear();
+                Ok(MessageResult::None)
+            } else {
+                Ok(MessageResult::Message(msg_type))
+            }
+        }
+    }
+
+    pub fn send_message(&mut self, type_: u8, buffer: &mut MsgBuffer) -> Result<(), Error> {
+        // HOT PATH
+        assert_ne!(type_, MESSAGE_TYPE_ROTATION);
+        buffer.prepend_byte(type_);
+        self.encrypt_message(buffer)
+    }
+
+    pub fn every_second(&mut self, out: &mut MsgBuffer) -> Result<MessageResult<P>, Error> {
+        out.clear();
+        if let Some(ref mut core) = self.core {
+            core.every_second()
+        }
+        if let Some(ref mut init) = self.init {
+            init.every_second(out)?;
+        }
+        if self.init.as_ref().map(|i| i.stage()).unwrap_or(CLOSING) == CLOSING {
+            self.init = None
+        }
+        if !out.is_empty() {
+            out.prepend_byte(INIT_MESSAGE_FIRST_BYTE);
+            return Ok(MessageResult::Reply)
+        }
+        if let Some(ref mut rotate) = self.rotation {
+            self.rotate_counter += 1;
+            if self.rotate_counter >= ROTATE_INTERVAL {
+                self.rotate_counter = 0;
+                if let Some(rot) = rotate.cycle(out) {
+                    let core = self.get_core()?;
+                    let algo = core.algorithm();
+                    let key = LessSafeKey::new(UnboundKey::new(algo, &rot.key[..algo.key_len()]).unwrap());
+                    core.rotate_key(key, rot.id, rot.use_for_sending);
+                }
+                if !out.is_empty() {
+                    out.prepend_byte(MESSAGE_TYPE_ROTATION);
+                    self.encrypt_message(out)?;
+                    return Ok(MessageResult::Reply)
+                }
+            }
+        }
+        Ok(MessageResult::None)
+    }
+}
+
+pub fn is_init_message(msg: &[u8]) -> bool {
+    // HOT PATH
+    !msg.is_empty() && msg[0] == INIT_MESSAGE_FIRST_BYTE
+}
+
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    use crate::types::NODE_ID_BYTES;
+
+    fn create_node(config: &Config) -> PeerCrypto<Vec<u8>> {
+        let rng = SystemRandom::new();
+        let mut node_id = [0; NODE_ID_BYTES];
+        rng.fill(&mut node_id).unwrap();
+        let crypto = Crypto::new(node_id, config).unwrap();
+        crypto.peer_instance(vec![])
+    }
+
+    #[test]
+    fn normal() {
+        let config = Config { password: Some("test".to_string()), ..Default::default() };
+        let mut node1 = create_node(&config);
+        let mut node2 = create_node(&config);
+        let mut msg = MsgBuffer::new(16);
+
+        node1.initialize(&mut msg).unwrap();
+        assert!(!msg.is_empty());
+
+        debug!("Node1 -> Node2");
+        let res = node2.handle_message(&mut msg).unwrap();
+        assert_eq!(res, MessageResult::Reply);
+        assert!(!msg.is_empty());
+
+        debug!("Node1 <- Node2");
+        let res = node1.handle_message(&mut msg).unwrap();
+        assert_eq!(res, MessageResult::InitializedWithReply(vec![]));
+        assert!(!msg.is_empty());
+
+        debug!("Node1 -> Node2");
+        let res = node2.handle_message(&mut msg).unwrap();
+        assert_eq!(res, MessageResult::InitializedWithReply(vec![]));
+        assert!(!msg.is_empty());
+
+        debug!("Node1 <- Node2");
+        let res = node1.handle_message(&mut msg).unwrap();
+        assert_eq!(res, MessageResult::None);
+        assert!(msg.is_empty());
+
+        let mut buffer = MsgBuffer::new(16);
+        let rng = SystemRandom::new();
+        buffer.set_length(1000);
+        rng.fill(buffer.message_mut()).unwrap();
+        for _ in 0..1000 {
+            node1.send_message(1, &mut buffer).unwrap();
+            let res = node2.handle_message(&mut buffer).unwrap();
+            assert_eq!(res, MessageResult::Message(1));
+
+            match node1.every_second(&mut msg).unwrap() {
+                MessageResult::None => (),
+                MessageResult::Reply => {
+                    let res = node2.handle_message(&mut msg).unwrap();
+                    assert_eq!(res, MessageResult::None);
+                }
+                other => assert_eq!(other, MessageResult::None)
+            }
+            match node2.every_second(&mut msg).unwrap() {
+                MessageResult::None => (),
+                MessageResult::Reply => {
+                    let res = node1.handle_message(&mut msg).unwrap();
+                    assert_eq!(res, MessageResult::None);
+                }
+                other => assert_eq!(other, MessageResult::None)
+            }
+        }
+    }
+}

src/crypto/rotate.rs

@@ -1,7 +1,3 @@
-// VpnCloud - Peer-to-Peer VPN
-// Copyright (C) 2015-2021  Dennis Schwerdel
-// This software is licensed under GPL-3 or newer (see LICENSE.md)
-
 // This module implements a turn based key rotation.
 //
 // The main idea is that both peers periodically create ecdh key pairs and exchange their public keys to create
@@ -29,8 +25,7 @@
 //
 // The whole communication is sent via the crypto stream and is therefore encrypted and protected against tampering.
 
-use super::Key;
+use super::{Error, Key, MsgBuffer};
-use crate::{error::Error, util::MsgBuffer};
 use byteorder::{NetworkEndian, ReadBytesExt, WriteBytesExt};
 use ring::{
     agreement::{agree_ephemeral, EphemeralPrivateKey, UnparsedPublicKey, X25519},

src/device.rs

@@ -1,5 +1,5 @@
 // VpnCloud - Peer-to-Peer VPN
-// Copyright (C) 2015-2021  Dennis Schwerdel
+// Copyright (C) 2015-2020  Dennis Schwerdel
 // This software is licensed under GPL-3 or newer (see LICENSE.md)
 
 use std::{
@@ -344,7 +344,7 @@ impl Device for MockDevice {
     }
 
     fn write(&mut self, buffer: &mut MsgBuffer) -> Result<(), Error> {
-        self.outbound.push_back(buffer.message().into());
+        self.outbound.push_back(buffer.message().to_owned());
         Ok(())
     }
 
@@ -355,7 +355,7 @@ impl Device for MockDevice {
 
 impl Default for MockDevice {
     fn default() -> Self {
-        Self { outbound: VecDeque::with_capacity(10), inbound: VecDeque::with_capacity(10) }
+        Self { outbound: VecDeque::new(), inbound: VecDeque::new() }
     }
 }
 

src/error.rs

@@ -1,7 +1,3 @@
-// VpnCloud - Peer-to-Peer VPN
-// Copyright (C) 2015-2021  Dennis Schwerdel
-// This software is licensed under GPL-3 or newer (see LICENSE.md)
-
 use thiserror::Error;
 
 use std::io;

src/main.rs

@@ -1,5 +1,5 @@
 // VpnCloud - Peer-to-Peer VPN
-// Copyright (C) 2015-2021  Dennis Schwerdel
+// Copyright (C) 2015-2020  Dennis Schwerdel
 // This software is licensed under GPL-3 or newer (see LICENSE.md)
 
 #[macro_use] extern crate log;

src/messages.rs

@@ -1,5 +1,5 @@
 // VpnCloud - Peer-to-Peer VPN
-// Copyright (C) 2015-2021  Dennis Schwerdel
+// Copyright (C) 2015-2020  Dennis Schwerdel
 // This software is licensed under GPL-3 or newer (see LICENSE.md)
 
 use crate::{

src/net.rs

@@ -1,5 +1,5 @@
 // VpnCloud - Peer-to-Peer VPN
-// Copyright (C) 2015-2021  Dennis Schwerdel
+// Copyright (C) 2015-2020  Dennis Schwerdel
 // This software is licensed under GPL-3 or newer (see LICENSE.md)
 
 use std::{
@@ -93,8 +93,8 @@ impl MockSocket {
             nat: Self::get_nat(),
             nat_peers: HashMap::new(),
             address,
-            outbound: VecDeque::with_capacity(10),
+            outbound: VecDeque::new(),
-            inbound: VecDeque::with_capacity(10)
+            inbound: VecDeque::new()
         }
     }
 
@@ -149,7 +149,7 @@ impl Socket for MockSocket {
     }
 
     fn send(&mut self, data: &[u8], addr: SocketAddr) -> Result<usize, io::Error> {
-        self.outbound.push_back((addr, data.into()));
+        self.outbound.push_back((addr, data.to_owned()));
         if self.nat {
             self.nat_peers.insert(addr, MockTimeSource::now() + 300);
         }

src/oldconfig.rs

@@ -1,7 +1,3 @@
-// VpnCloud - Peer-to-Peer VPN
-// Copyright (C) 2015-2021  Dennis Schwerdel
-// This software is licensed under GPL-3 or newer (see LICENSE.md)
-
 use super::{device::Type, types::Mode, util::Duration};
 use crate::config::{ConfigFile, ConfigFileBeacon, ConfigFileDevice, ConfigFileStatsd, CryptoConfig};
 use std::collections::HashMap;

src/payload.rs

@@ -1,5 +1,5 @@
 // VpnCloud - Peer-to-Peer VPN
-// Copyright (C) 2015-2021  Dennis Schwerdel
+// Copyright (C) 2015-2020  Dennis Schwerdel
 // This software is licensed under GPL-3 or newer (see LICENSE.md)
 
 use crate::{error::Error, types::Address};

src/poll/epoll.rs

@@ -1,5 +1,5 @@
 // VpnCloud - Peer-to-Peer VPN
-// Copyright (C) 2015-2021  Dennis Schwerdel
+// Copyright (C) 2015-2020  Dennis Schwerdel
 // This software is licensed under GPL-3 or newer (see LICENSE.md)
 
 use std::{io, os::unix::io::RawFd};

src/poll/mod.rs

@@ -1,5 +1,5 @@
 // VpnCloud - Peer-to-Peer VPN
-// Copyright (C) 2015-2021  Dennis Schwerdel
+// Copyright (C) 2015-2020  Dennis Schwerdel
 // This software is licensed under GPL-3 or newer (see LICENSE.md)
 
 #[cfg(any(target_os = "linux", target_os = "android"))]

src/port_forwarding.rs

@@ -1,5 +1,5 @@
 // VpnCloud - Peer-to-Peer VPN
-// Copyright (C) 2015-2021  Dennis Schwerdel
+// Copyright (C) 2015-2020  Dennis Schwerdel
 // This software is licensed under GPL-3 or newer (see LICENSE.md)
 
 #[cfg(feature = "nat")]

src/table.rs

@@ -1,5 +1,5 @@
 // VpnCloud - Peer-to-Peer VPN
-// Copyright (C) 2015-2021  Dennis Schwerdel
+// Copyright (C) 2015-2020  Dennis Schwerdel
 // This software is licensed under GPL-3 or newer (see LICENSE.md)
 
 use fnv::FnvHasher;

src/tests/common.rs

@@ -1,214 +0,0 @@
-// VpnCloud - Peer-to-Peer VPN
-// Copyright (C) 2015-2021  Dennis Schwerdel
-// This software is licensed under GPL-3 or newer (see LICENSE.md)
-
-use std::{
-    collections::{HashMap, VecDeque},
-    io::Write,
-    net::SocketAddr,
-    sync::{
-        atomic::{AtomicUsize, Ordering},
-        Once
-    }
-};
-
-pub use crate::{
-    cloud::GenericCloud,
-    config::{Config, CryptoConfig},
-    device::{MockDevice, Type},
-    net::MockSocket,
-    payload::{Frame, Packet, Protocol},
-    types::Range,
-    util::{MockTimeSource, Time, TimeSource}
-};
-
-
-static INIT_LOGGER: Once = Once::new();
-
-pub fn init_debug_logger() {
-    INIT_LOGGER.call_once(|| {
-        log::set_boxed_logger(Box::new(DebugLogger)).unwrap();
-        log::set_max_level(log::LevelFilter::Debug);
-    })
-}
-
-static CURRENT_NODE: AtomicUsize = AtomicUsize::new(0);
-
-struct DebugLogger;
-
-impl DebugLogger {
-    pub fn set_node(node: usize) {
-        CURRENT_NODE.store(node, Ordering::SeqCst);
-    }
-}
-
-impl log::Log for DebugLogger {
-    #[inline]
-    fn enabled(&self, metadata: &log::Metadata) -> bool {
-        log::max_level() > metadata.level()
-    }
-
-    #[inline]
-    fn log(&self, record: &log::Record) {
-        if self.enabled(record.metadata()) {
-            eprintln!("Node {} - {} - {}", CURRENT_NODE.load(Ordering::SeqCst), record.level(), record.args());
-        }
-    }
-
-    #[inline]
-    fn flush(&self) {
-        std::io::stderr().flush().expect("Failed to flush")
-    }
-}
-
-
-type TestNode<P> = GenericCloud<MockDevice, P, MockSocket, MockTimeSource>;
-
-pub struct Simulator<P: Protocol> {
-    next_port: u16,
-    nodes: HashMap<SocketAddr, TestNode<P>>,
-    messages: VecDeque<(SocketAddr, SocketAddr, Vec<u8>)>
-}
-
-pub type TapSimulator = Simulator<Frame>;
-#[allow(dead_code)]
-pub type TunSimulator = Simulator<Packet>;
-
-
-impl<P: Protocol> Simulator<P> {
-    pub fn new() -> Self {
-        init_debug_logger();
-        MockTimeSource::set_time(0);
-        Self { next_port: 1, nodes: HashMap::default(), messages: VecDeque::with_capacity(10) }
-    }
-
-    pub fn add_node(&mut self, nat: bool, config: &Config) -> SocketAddr {
-        let mut config = config.clone();
-        MockSocket::set_nat(nat);
-        config.listen = format!("[::]:{}", self.next_port);
-        let addr = config.listen.parse::<SocketAddr>().unwrap();
-        if config.crypto.password.is_none() && config.crypto.private_key.is_none() {
-            config.crypto.password = Some("test123".to_string())
-        }
-        DebugLogger::set_node(self.next_port as usize);
-        self.next_port += 1;
-        let node = TestNode::new(&config, MockSocket::new(addr), MockDevice::new(), None, None);
-        DebugLogger::set_node(0);
-        self.nodes.insert(addr, node);
-        addr
-    }
-
-    #[allow(dead_code)]
-    pub fn get_node(&mut self, addr: SocketAddr) -> &mut TestNode<P> {
-        let node = self.nodes.get_mut(&addr).unwrap();
-        DebugLogger::set_node(node.get_num());
-        node
-    }
-
-    pub fn simulate_next_message(&mut self) {
-        if let Some((src, dst, data)) = self.messages.pop_front() {
-            if let Some(node) = self.nodes.get_mut(&dst) {
-                if node.socket().put_inbound(src, data) {
-                    DebugLogger::set_node(node.get_num());
-                    node.trigger_socket_event();
-                    DebugLogger::set_node(0);
-                    let sock = node.socket();
-                    let src = dst;
-                    while let Some((dst, data)) = sock.pop_outbound() {
-                        self.messages.push_back((src, dst, data));
-                    }
-                }
-            } else {
-                warn!("Message to unknown node {}", dst);
-            }
-        }
-    }
-
-    pub fn simulate_all_messages(&mut self) {
-        while !self.messages.is_empty() {
-            self.simulate_next_message()
-        }
-    }
-
-    pub fn trigger_node_housekeep(&mut self, addr: SocketAddr) {
-        let node = self.nodes.get_mut(&addr).unwrap();
-        DebugLogger::set_node(node.get_num());
-        node.trigger_housekeep();
-        DebugLogger::set_node(0);
-        let sock = node.socket();
-        while let Some((dst, data)) = sock.pop_outbound() {
-            self.messages.push_back((addr, dst, data));
-        }
-    }
-
-    pub fn trigger_housekeep(&mut self) {
-        for (src, node) in &mut self.nodes {
-            DebugLogger::set_node(node.get_num());
-            node.trigger_housekeep();
-            DebugLogger::set_node(0);
-            let sock = node.socket();
-            while let Some((dst, data)) = sock.pop_outbound() {
-                self.messages.push_back((*src, dst, data));
-            }
-        }
-    }
-
-    pub fn set_time(&mut self, time: Time) {
-        MockTimeSource::set_time(time);
-    }
-
-    pub fn simulate_time(&mut self, time: Time) {
-        let mut t = MockTimeSource::now();
-        while t < time {
-            t += 1;
-            self.set_time(t);
-            self.trigger_housekeep();
-            self.simulate_all_messages();
-        }
-    }
-
-    pub fn connect(&mut self, src: SocketAddr, dst: SocketAddr) {
-        let node = self.nodes.get_mut(&src).unwrap();
-        DebugLogger::set_node(node.get_num());
-        node.connect(dst).unwrap();
-        DebugLogger::set_node(0);
-        let sock = node.socket();
-        while let Some((dst, data)) = sock.pop_outbound() {
-            self.messages.push_back((src, dst, data));
-        }
-    }
-
-    pub fn is_connected(&self, src: SocketAddr, dst: SocketAddr) -> bool {
-        self.nodes.get(&src).unwrap().is_connected(&dst)
-    }
-
-    #[allow(dead_code)]
-    pub fn node_addresses(&self) -> Vec<SocketAddr> {
-        self.nodes.keys().copied().collect()
-    }
-
-    #[allow(dead_code)]
-    pub fn message_count(&self) -> usize {
-        self.messages.len()
-    }
-
-    pub fn put_payload(&mut self, addr: SocketAddr, data: Vec<u8>) {
-        let node = self.nodes.get_mut(&addr).unwrap();
-        node.device().put_inbound(data);
-        DebugLogger::set_node(node.get_num());
-        node.trigger_device_event();
-        DebugLogger::set_node(0);
-        let sock = node.socket();
-        while let Some((dst, data)) = sock.pop_outbound() {
-            self.messages.push_back((addr, dst, data));
-        }
-    }
-
-    pub fn pop_payload(&mut self, node: SocketAddr) -> Option<Vec<u8>> {
-        self.nodes.get_mut(&node).unwrap().device().pop_outbound()
-    }
-
-    pub fn drop_message(&mut self) {
-        self.messages.pop_front();
-    }
-}

src/tests/mod.rs

@@ -1,8 +1,218 @@
 // VpnCloud - Peer-to-Peer VPN
-// Copyright (C) 2015-2021  Dennis Schwerdel
+// Copyright (C) 2015-2020  Dennis Schwerdel
 // This software is licensed under GPL-3 or newer (see LICENSE.md)
 
-mod common;
 mod nat;
 mod payload;
 mod peers;
+
+use std::{
+    collections::{HashMap, VecDeque},
+    io::Write,
+    net::SocketAddr,
+    sync::{
+        atomic::{AtomicUsize, Ordering},
+        Once
+    }
+};
+
+pub use super::{
+    cloud::GenericCloud,
+    config::{Config, CryptoConfig},
+    device::{MockDevice, Type},
+    net::MockSocket,
+    payload::{Frame, Packet, Protocol},
+    types::Range,
+    util::{MockTimeSource, Time, TimeSource}
+};
+
+
+static INIT_LOGGER: Once = Once::new();
+
+pub fn init_debug_logger() {
+    INIT_LOGGER.call_once(|| {
+        log::set_boxed_logger(Box::new(DebugLogger)).unwrap();
+        log::set_max_level(log::LevelFilter::Debug);
+    })
+}
+
+static CURRENT_NODE: AtomicUsize = AtomicUsize::new(0);
+
+struct DebugLogger;
+
+impl DebugLogger {
+    pub fn set_node(node: usize) {
+        CURRENT_NODE.store(node, Ordering::SeqCst);
+    }
+}
+
+impl log::Log for DebugLogger {
+    #[inline]
+    fn enabled(&self, _metadata: &log::Metadata) -> bool {
+        true
+    }
+
+    #[inline]
+    fn log(&self, record: &log::Record) {
+        if self.enabled(record.metadata()) {
+            eprintln!("Node {} - {} - {}", CURRENT_NODE.load(Ordering::SeqCst), record.level(), record.args());
+        }
+    }
+
+    #[inline]
+    fn flush(&self) {
+        std::io::stderr().flush().expect("Failed to flush")
+    }
+}
+
+
+type TestNode<P> = GenericCloud<MockDevice, P, MockSocket, MockTimeSource>;
+
+pub struct Simulator<P: Protocol> {
+    next_port: u16,
+    nodes: HashMap<SocketAddr, TestNode<P>>,
+    messages: VecDeque<(SocketAddr, SocketAddr, Vec<u8>)>
+}
+
+pub type TapSimulator = Simulator<Frame>;
+#[allow(dead_code)]
+pub type TunSimulator = Simulator<Packet>;
+
+
+impl<P: Protocol> Simulator<P> {
+    pub fn new() -> Self {
+        init_debug_logger();
+        MockTimeSource::set_time(0);
+        Self { next_port: 1, nodes: HashMap::default(), messages: VecDeque::default() }
+    }
+
+    pub fn add_node(&mut self, nat: bool, config: &Config) -> SocketAddr {
+        let mut config = config.clone();
+        MockSocket::set_nat(nat);
+        config.listen = format!("[::]:{}", self.next_port);
+        let addr = config.listen.parse::<SocketAddr>().unwrap();
+        if config.crypto.password.is_none() && config.crypto.private_key.is_none() {
+            config.crypto.password = Some("test123".to_string())
+        }
+        DebugLogger::set_node(self.next_port as usize);
+        self.next_port += 1;
+        let node = TestNode::new(&config, MockSocket::new(addr), MockDevice::new(), None, None);
+        DebugLogger::set_node(0);
+        self.nodes.insert(addr, node);
+        addr
+    }
+
+    #[allow(dead_code)]
+    pub fn get_node(&mut self, addr: SocketAddr) -> &mut TestNode<P> {
+        let node = self.nodes.get_mut(&addr).unwrap();
+        DebugLogger::set_node(node.get_num());
+        node
+    }
+
+    pub fn simulate_next_message(&mut self) {
+        if let Some((src, dst, data)) = self.messages.pop_front() {
+            if let Some(node) = self.nodes.get_mut(&dst) {
+                if node.socket().put_inbound(src, data) {
+                    DebugLogger::set_node(node.get_num());
+                    node.trigger_socket_event();
+                    DebugLogger::set_node(0);
+                    let sock = node.socket();
+                    let src = dst;
+                    while let Some((dst, data)) = sock.pop_outbound() {
+                        self.messages.push_back((src, dst, data));
+                    }
+                }
+            } else {
+                warn!("Message to unknown node {}", dst);
+            }
+        }
+    }
+
+    pub fn simulate_all_messages(&mut self) {
+        while !self.messages.is_empty() {
+            self.simulate_next_message()
+        }
+    }
+
+    pub fn trigger_node_housekeep(&mut self, addr: SocketAddr) {
+        let node = self.nodes.get_mut(&addr).unwrap();
+        DebugLogger::set_node(node.get_num());
+        node.trigger_housekeep();
+        DebugLogger::set_node(0);
+        let sock = node.socket();
+        while let Some((dst, data)) = sock.pop_outbound() {
+            self.messages.push_back((addr, dst, data));
+        }
+    }
+
+    pub fn trigger_housekeep(&mut self) {
+        for (src, node) in &mut self.nodes {
+            DebugLogger::set_node(node.get_num());
+            node.trigger_housekeep();
+            DebugLogger::set_node(0);
+            let sock = node.socket();
+            while let Some((dst, data)) = sock.pop_outbound() {
+                self.messages.push_back((*src, dst, data));
+            }
+        }
+    }
+
+    pub fn set_time(&mut self, time: Time) {
+        MockTimeSource::set_time(time);
+    }
+
+    pub fn simulate_time(&mut self, time: Time) {
+        let mut t = MockTimeSource::now();
+        while t < time {
+            t += 1;
+            self.set_time(t);
+            self.trigger_housekeep();
+            self.simulate_all_messages();
+        }
+    }
+
+    pub fn connect(&mut self, src: SocketAddr, dst: SocketAddr) {
+        let node = self.nodes.get_mut(&src).unwrap();
+        DebugLogger::set_node(node.get_num());
+        node.connect(dst).unwrap();
+        DebugLogger::set_node(0);
+        let sock = node.socket();
+        while let Some((dst, data)) = sock.pop_outbound() {
+            self.messages.push_back((src, dst, data));
+        }
+    }
+
+    pub fn is_connected(&self, src: SocketAddr, dst: SocketAddr) -> bool {
+        self.nodes.get(&src).unwrap().is_connected(&dst)
+    }
+
+    #[allow(dead_code)]
+    pub fn node_addresses(&self) -> Vec<SocketAddr> {
+        self.nodes.keys().copied().collect()
+    }
+
+    #[allow(dead_code)]
+    pub fn message_count(&self) -> usize {
+        self.messages.len()
+    }
+
+    pub fn put_payload(&mut self, addr: SocketAddr, data: Vec<u8>) {
+        let node = self.nodes.get_mut(&addr).unwrap();
+        node.device().put_inbound(data);
+        DebugLogger::set_node(node.get_num());
+        node.trigger_device_event();
+        DebugLogger::set_node(0);
+        let sock = node.socket();
+        while let Some((dst, data)) = sock.pop_outbound() {
+            self.messages.push_back((addr, dst, data));
+        }
+    }
+
+    pub fn pop_payload(&mut self, node: SocketAddr) -> Option<Vec<u8>> {
+        self.nodes.get_mut(&node).unwrap().device().pop_outbound()
+    }
+
+    pub fn drop_message(&mut self) {
+        self.messages.pop_front();
+    }
+}

src/tests/nat.rs

@@ -1,8 +1,8 @@
 // VpnCloud - Peer-to-Peer VPN
-// Copyright (C) 2015-2021  Dennis Schwerdel
+// Copyright (C) 2015-2020  Dennis Schwerdel
 // This software is licensed under GPL-3 or newer (see LICENSE.md)
 
-use super::common::*;
+use super::*;
 
 #[test]
 fn connect_nat_2_peers() {

src/tests/payload.rs

@@ -1,8 +1,8 @@
 // VpnCloud - Peer-to-Peer VPN
-// Copyright (C) 2015-2021  Dennis Schwerdel
+// Copyright (C) 2015-2020  Dennis Schwerdel
 // This software is licensed under GPL-3 or newer (see LICENSE.md)
 
-use super::common::*;
+use super::*;
 
 #[test]
 fn switch_delivers() {

src/tests/peers.rs

@@ -1,8 +1,8 @@
 // VpnCloud - Peer-to-Peer VPN
-// Copyright (C) 2015-2021  Dennis Schwerdel
+// Copyright (C) 2015-2020  Dennis Schwerdel
 // This software is licensed under GPL-3 or newer (see LICENSE.md)
 
-use super::common::*;
+use super::*;
 
 #[test]
 fn direct_connect() {

src/traffic.rs

@@ -1,5 +1,5 @@
 // VpnCloud - Peer-to-Peer VPN
-// Copyright (C) 2015-2021  Dennis Schwerdel
+// Copyright (C) 2018-2020  Dennis Schwerdel
 // This software is licensed under GPL-3 or newer (see LICENSE.md)
 
 use std::{

src/types.rs

@@ -1,5 +1,5 @@
 // VpnCloud - Peer-to-Peer VPN
-// Copyright (C) 2015-2021  Dennis Schwerdel
+// Copyright (C) 2015-2020  Dennis Schwerdel
 // This software is licensed under GPL-3 or newer (see LICENSE.md)
 
 use crate::{

src/util.rs

@@ -1,5 +1,5 @@
 // VpnCloud - Peer-to-Peer VPN
-// Copyright (C) 2015-2021  Dennis Schwerdel
+// Copyright (C) 2015-2020  Dennis Schwerdel
 // This software is licensed under GPL-3 or newer (see LICENSE.md)
 
 use std::process::Command;

src/wsproxy.rs

@@ -1,7 +1,3 @@
-// VpnCloud - Peer-to-Peer VPN
-// Copyright (C) 2015-2021  Dennis Schwerdel
-// This software is licensed under GPL-3 or newer (see LICENSE.md)
-
 use super::{
     net::{get_ip, mapped_addr, parse_listen, Socket},
     poll::{WaitImpl, WaitResult},

vpncloud.adoc

@@ -614,5 +614,5 @@ given.
 
 == COPYRIGHT
 
-Copyright (C) 2015-2021  Dennis Schwerdel
+Copyright (C) 2015-2020  Dennis Schwerdel
 This software is licensed under GPL-3 or newer (see LICENSE.md)