VERSION 1.0.4: Stability, LAN, and NAT traversal improvements

ZeroTier One version 1.0.4 brings several improvements to stability,
connectivity between hosts on the same LAN, and NAT traversal.

Direct connectivity improvements:

 - ZeroTier One now opens port mappings using uPnP and/or NAT-PMP
   if they are available on your network. These are then made
   available to other (1.0.4 or newer) nodes. This should greatly
   improve direct connectivity success rates for users on networks
   that support port mapping. To build with this option, you must
   include ZT_USE_MINIUPNPC=1 on the make path. Pre-build binaries
   are included for many common architectures to make this easier.

 - A new message has been introduced whereby nodes can "push" IP
   address suggestions to other nodes. This is only done to nodes
   with whom you have a trust relationship, which right now means
   they are members of a network you've joined. The IP addresses
   sent include local interface addresses and possibly uPnP mappings
   if any are available. When nodes receive pushed IPs, they can
   attempt connectivity at these addresses. This greatly improves
   connectivity on local LANs, since the old broadcast mechanism
   proved too unreliable under many real world scenarios.

 - IPv6 addresses are also "pushed" via the aforementioned message,
   allowing direct connectivity over IPv6 if both hosts have an
   IPv6 address.

 - Some of the aggressive port-scanning NAT-t behavior has been
   removed, since this occasionally triggered intrusion alarms on
   some networks and proved ineffective in the field. uPnP will be
   a much bigger win, and is less "hacky."

 - The rate of (tiny) UDP keepalive packet generation was slightly
   increased. We were as surprised as you to learn that there are
   many NAT routers in the wild with timeouts as short as 20 seconds
   even though the RFC stipulates that they should be no shorter
   than two minutes (120 seconds).

All of these connectivity improvements rely upon a new message
introduced with 1.0.4, so they'll only work between 1.0.4 nodes.
Older methods of connectivity establishment will continue to work
with earlier versions.

Platform-specific improvements:

 - Many improvements have been made to Windows support and stability.
   The NDIS6 driver is now used exclusively. If you have ports that
   use NDIS5, these will automatically be re-created using the NDIS6
   driver. You may see a "select this network's type" notification
   after 1.0.4 upgrade for this reason.

 - The dependency on the external "devcon.exe" binary on Windows has
   been completely removed in favor of internal direct calls to the
   Windows setup API to add and remove network ports. These are done
   via dynamically loaded instances of the system setup DLLs to use
   the most recent setup API code on your system for improved
   compatibility.

 - This version is tested with Windows 10 release, and was confirmed
   to work on a clean install.

 - The ARM32/Raspbian build is now back to using Debian Wheezy for
   library backward compatibility (binary build only).

 - The Mac icon is now a bit smaller to look better in the dock.

 - The ui/ subfolder is now distributed with the Linux binary installer
   and packages. This means Linux users can navigate to the UI at
   http://127.0.0.1:9993/ and enter their authtoken.secret to use
   the GUI locally. (This port could also be accessed via SSH port
   forwarding or other mechanisms to administrate graphically from a
   remote system.)

Other improvements:

 - The new beta SQLite-backed controller microservice found in
   controller/ and built with the ZT_ENABLE_NETWORK_CONTROLLER=1 make
   option is now in a much more "working" state. Feel free to give
   it a try! If you tried it before, delete controller.db before
   starting the new version.

 - A few tweaks were made to the path selection logic in the hope of
   eliminating some flaky network behavior reported by users.

The next version of ZeroTier One will focus on performance and memory
footprint reduction, and may also include perfect forward security/secrecy
(a.k.a. PFS) once our design is finalized and reviewed.

.gitignore

@@ -1,8 +1,73 @@
-zerotier-*
-/Makefile
-*.o
+# Main binaries created in *nix builds
+/zerotier-*
+
+# OS-created garbage files from various platforms
 .DS_Store
 .Apple*
-*.dSYM
-mac-tap/tuntap/src/tap/tap
-mac-tap/tuntap/tap.kext
+Thumbs.db
+
+# Windows build droppings
+/windows/ZeroTierOne.sdf
+/windows/ZeroTierOne.v11.suo
+/windows/x64
+/windows/Win32
+/windows/*/x64
+/windows/*/Win32
+/windows/ZeroTierOne/Release
+/windows/ZeroTierOneService/obj
+/windows/ZeroTierOneService/bin
+/windows/Build
+/windows/Debug
+/windows/Release
+/windows/WebUIWrapper/bin
+/windows/WebUIWrapper/obj
+/ext/installfiles/windows/ZeroTier One-SetupFiles
+/ext/installfiles/windows/Prerequisites
+/ext/installfiles/windows/*-cache
+/ZeroTier One.msi
+
+# *nix/Mac build droppings
+/build-*
+/ZeroTierOneInstaller-*
+
+# Miscellaneous file types that we don't want to check in
+*.log
+*.opensdf
+*.user
+*.cache
+*.obj
+*.tlog
+*.pid
+*.pkg
+*.o
+*.core
+*.deb
+*.rpm
+*.autosave
+*.tmp
+
+# Root topology build files, temporaries, and never check in secrets
+/root-topology/bin2c
+/root-topology/mktopology
+/root-topology/*.secret
+/root-topology/test/supernodes
+/root-topology/test/test-root-topology
+
+# MacGap wrapper build files
+/ext/mac-ui-macgap1-wrapper/src/MacGap.xcodeproj/project.xcworkspace/xcuserdata/*
+/ext/mac-ui-macgap1-wrapper/src/MacGap.xcodeproj/xcuserdata/*
+/ext/mac-ui-macgap1-wrapper/src/build
+
+# Web UI dev temporaries
+/ui/.module-cache
+node_modules
+
+# Java/Android/JNI build droppings
+java/obj/
+java/libs/
+java/bin/
+java/classes/
+java/doc/
+java/build_win64/
+java/build_win32/
+/java/mac32_64/

AUTHORS.md

@@ -0,0 +1,44 @@
+## Authors
+
+ * ZeroTier protocol design and core network virtualization engine, ZeroTier One service, React web UI, packaging for most platforms, kitchen sink...<br>
+   Adam Ierymenko / adam.ierymenko@zerotier.com
+
+ * Java JNI Interface to enable Android application development, and Android app itself (code for that is elsewhere)<br>
+   Grant Limberg / glimberg@gmail.com
+
+## Contributors
+
+ * A number of fixes and improvements to the new controller, other stuff.<br>
+   Kees Bos / https://github.com/keesbos
+
+ * Debugging and testing, OpenWRT support fixes.<br>
+   Moritz Warning / moritzwarning@web.de
+
+ * Several others made smaller contributions, which GitHub tracks here:<br>
+   https://github.com/zerotier/ZeroTierOne/graphs/contributors
+
+## Third Party Code
+
+ * LZ4 compression algorithm by Yann Collet (BSD license)<br>
+   http://code.google.com/p/lz4/
+
+ * http-parser by many authors (MIT license)<br>
+   https://github.com/joyent/http-parser
+
+ * json-parser by James McLaughlin (BSD license)<br>
+   https://github.com/udp/json-parser
+
+ * TunTapOSX by Mattias Nissler (BSD license)<br>
+   http://tuntaposx.sourceforge.net
+
+ * tap-windows and tap-windows6 by the OpenVPN project (GPL)<br>
+   https://github.com/OpenVPN/tap-windows<br>
+   https://github.com/OpenVPN/tap-windows6
+
+ * Salsa20 stream cipher, Curve25519 elliptic curve cipher, Ed25519
+   digital signature algorithm, and Poly1305 MAC algorithm, all by
+   Daniel J. Bernstein (public domain)<br>
+   http://cr.yp.to/
+
+ * MiniUPNPC by Thomas Bernard [BSD]
+   http://miniupnp.free.fr

AUTHORS.txt

@@ -1,32 +0,0 @@
-This file will track authors and contributors to ZeroTier's code base.
-People who contribute code that is accepted into the master (trunk) branch
-will be credited here.
-
---
-
-Adam Ierymenko [adam.ierymenko@zerotier.com]
- * Principal author and maintainer of ZeroTier One, author of all
-   code prior to ZeroTier's open source release.
- * Maintainer of master branch, release manager.
-
---
-
-ZeroTier One includes or links with the following third party software:
-
- * LZ4 compression algorithm by Yann Collet (BSD license)
-   http://code.google.com/p/lz4/
-
- * JsonCPP by Baptiste Lepilleur (public domain)
-   http://jsoncpp.sourceforge.net
-
- * http-parser, a simple C http parser library (MIT license)
-   https://github.com/joyent/http-parser
-
- * OpenSSL libcrypto (BSD-style OpenSSL license)
-   http://www.openssl.org/
-
- * TunTapOSX by Mattias Nissler (with tiny modifications) (BSD license)
-   http://tuntaposx.sourceforge.net
-
- * Salsa20 stream cipher by D. J. Bernstein (public domain)
-   http://cr.yp.to/snuffle.html

BUILDING.txt

@@ -1,19 +0,0 @@
-Building ZeroTier One on different platforms:
-
-(See RUNNING.txt for what to do next.)
-
--- MacOS
-
-make -f Makefile.mac
-
-Edit Makefile.mac if you want to change between debug or release build.
-
--- Linux
-
-make -f Makefile.linux
-
-Edit Makefile.linux if you want to change between debug or release build.
-
--- Windows
-
-TBD

Makefile

@@ -0,0 +1,18 @@
+# Common makefile -- loads make rules for each platform
+
+OSTYPE=$(shell uname -s)
+
+ifeq ($(OSTYPE),Darwin)
+	include make-mac.mk
+endif
+
+ifeq ($(OSTYPE),Linux)
+	include make-linux.mk
+endif
+
+ifeq ($(OSTYPE),FreeBSD)
+	include make-freebsd.mk
+endif
+ifeq ($(OSTYPE),OpenBSD)
+	include make-freebsd.mk
+endif

Makefile.linux

@@ -1,54 +0,0 @@
-CC=gcc
-CXX=g++
-
-INCLUDES=-Iext/bin/libcrypto/include -Iext/jsoncpp/include
-ARCH=$(shell uname -m)
-DEFS=-DZT_ARCH="$(ARCH)" -DZT_OSNAME="linux" -DZT_TRACE
-
-# Uncomment for a release optimized build
-CFLAGS=-Wall -O6 -fno-unroll-loops -pthread $(INCLUDES) -DNDEBUG $(DEFS)
-STRIP=strip --strip-all
-
-# Uncomment for a debug build
-#CFLAGS=-Wall -g -pthread $(INCLUDES) -DZT_TRACE -DZT_LOG_STDOUT $(DEFS)
-#STRIP=echo
-
-CXXFLAGS=$(CFLAGS) -fno-rtti
-
-# We statically link against libcrypto because RedHat-derived distributions do
-# not ship the elliptic curve algorithms. If we didn't we'd have to build
-# separate binaries for the RedHat and Debian universes to distribute via
-# auto-update. This way we get one Linux binary for all systems of a given
-# architecture.
-LIBS=ext/bin/libcrypto/linux-$(ARCH)/libcrypto.a
-
-include objects.mk
-
-all:	one launcher
-
-one:	$(OBJS)
-	$(CXX) $(CXXFLAGS) -o zerotier-one main.cpp $(OBJS) $(LIBS)
-	$(STRIP) zerotier-one
-
-selftest:	$(OBJS)
-	$(CXX) $(CXXFLAGS) -o zerotier-selftest selftest.cpp $(OBJS) $(LIBS)
-	$(STRIP) zerotier-selftest
-
-idtool:	$(OBJS)
-	$(CXX) $(CXXFLAGS) -o zerotier-idtool idtool.cpp $(OBJS) $(LIBS)
-	$(STRIP) zerotier-idtool
-
-packtool:	$(OBJS)
-	$(CXX) $(CXXFLAGS) -o zerotier-packtool packtool.cpp $(OBJS) $(LIBS)
-	$(STRIP) zerotier-packtool
-
-launcher:
-	$(CC) -Os -o zerotier-launcher launcher.c
-	$(STRIP) zerotier-launcher
-
-launcher-fakebin:
-	$(CC) $(CFLAGS) -DZEROTIER_FAKE_VERSION_MAJOR=1 -DZEROTIER_FAKE_VERSION_MINOR=2 -DZEROTIER_FAKE_VERSION_REVISION=3 -o zerotier-launcher-fakebin-123 launcher-fakebin.c
-	$(CC) $(CFLAGS) -DZEROTIER_FAKE_VERSION_MAJOR=1 -DZEROTIER_FAKE_VERSION_MINOR=2 -DZEROTIER_FAKE_VERSION_REVISION=4 -o zerotier-launcher-fakebin-124 launcher-fakebin.c
-
-clean:
-	rm -f $(OBJS) zerotier-*

Makefile.mac

@@ -1,63 +0,0 @@
-CC=gcc
-CXX=g++
-
-INCLUDES=-Iext/bin/libcrypto/include -Iext/jsoncpp/include
-DEFS=-DZT_ARCH="x86_combined" -DZT_OSNAME="mac" -DZT_TRACE
-
-# Uncomment for a release optimized universal binary build
-CFLAGS=-arch i386 -arch x86_64 -Wall -O6 -ftree-vectorize -pthread -mmacosx-version-min=10.6 -DNDEBUG $(INCLUDES) $(DEFS)
-STRIP=strip
-
-# Uncomment for a debug build
-#CFLAGS=-Wall -g -pthread -DZT_TRACE -DZT_LOG_STDOUT $(INCLUDES) $(DEFS)
-#STRIP=echo
-
-CXXFLAGS=$(CFLAGS) -fno-rtti
-
-# We statically link against libcrypto since Apple has apparently decided
-# to deprecate it and may remove it in future OS releases.
-LIBS=ext/bin/libcrypto/mac-x86_combined/libcrypto.a
-
-include objects.mk
-
-all: one launcher mac-tap
-
-one:	$(OBJS)
-	$(CXX) $(CXXFLAGS) -o zerotier-one main.cpp $(OBJS) $(LIBS)
-	$(STRIP) zerotier-one
-
-selftest: $(OBJS)
-	$(CXX) $(CXXFLAGS) -o zerotier-selftest selftest.cpp $(OBJS) $(LIBS)
-	$(STRIP) zerotier-selftest
-
-idtool: $(OBJS)
-	$(CXX) $(CXXFLAGS) -o zerotier-idtool idtool.cpp $(OBJS) $(LIBS)
-	$(STRIP) zerotier-idtool
-
-packtool: $(OBJS)
-	$(CXX) $(CXXFLAGS) -o zerotier-packtool packtool.cpp $(OBJS) $(LIBS)
-	$(STRIP) zerotier-packtool
-
-mac-tap: FORCE
-	cd mac-tap/tuntap ; make tap.kext
-
-install-mac-tap: FORCE
-	mkdir -p /Library/Application\ Support/ZeroTier/One
-	rm -rf /Library/Application\ Support/ZeroTier/One/tap.kext
-	cp -R mac-tap/tuntap/tap.kext /Library/Application\ Support/ZeroTier/One
-	chown -R root:wheel /Library/Application\ Support/ZeroTier/One/tap.kext
-
-launcher: FORCE
-	$(CC) -Os -arch i386 -arch x86_64 -o zerotier-launcher launcher.c
-	$(STRIP) zerotier-launcher
-
-launcher-fakebin:
-	$(CC) $(CFLAGS) -DZEROTIER_FAKE_VERSION_MAJOR=1 -DZEROTIER_FAKE_VERSION_MINOR=2 -DZEROTIER_FAKE_VERSION_REV
-	$(CC) $(CFLAGS) -DZEROTIER_FAKE_VERSION_MAJOR=1 -DZEROTIER_FAKE_VERSION_MINOR=2 -DZEROTIER_FAKE_VERSION_REV
-
-clean:
-	rm -rf *.dSYM
-	rm -f $(OBJS) zerotier-*
-	cd mac-tap/tuntap ; make clean
-
-FORCE:

README.md

@@ -1,84 +1,171 @@
 ZeroTier One
 ======
 
-ZeroTier One creates flat virtual Ethernet networks of almost unlimited size. [Visit ZeroTier on the web](https://www.zerotier.com/) for more information.
+ZeroTier is a software defined networking layer for Earth.
 
-This code is presently in **ALPHA** testing. That means that the protocol spec may change in incompatible ways, and it certainly has bugs. Testers should "git pull," rebuild, and restart fairly often. If things mysteriously stop working, do that.
+It can be used for on-premise network virtualization, as a peer to peer VPN for mobile teams, for hybrid or multi-data-center cloud deployments, or just about anywhere else secure software defined virtual networking is useful.
 
-See BUILDING.txt and RUNNING.txt for instructions. It currently builds on Mac and Linux. A Windows port is coming soon. Nice packages/installers and auto-update is also coming when alpha transitions to beta.
+ZeroTier One is our OS-level client service. It allows Mac, Linux, Windows, FreeBSD, and soon other types of clients to join ZeroTier virtual networks like conventional VPNs or VLANs. It can run on native systems, VMs, or containers (Docker, OpenVZ, etc.).
 
-Note that this won't work if your firewall does not allow outbound UDP. It must allow UDP conversations on port 8993 at a minimum.
+Visit [ZeroTier's site](https://www.zerotier.com/) for more information. You can also download professionally packaged binary installers/packages for a variety of supported OSes there if you don't want to build ZeroTier One from source.
 
-At present there is only one virtual LAN and you are dumped there by default. It's called Earth, and is exactly what it sounds like. The ability to create and join additional networks is coming soon. Once you're on, visit [earth.zerotier.net](http://earth.zerotier.net/) to see your Earth LAN IP address and other information.
+### Building from Source
 
-**Security warning:** You read that right. ZeroTier One places your computer on an absolutely open global Ethernet party line. Please ensure that you are up to date on your OS patches and we recommend turning off unnecessary services. Also be sure that anything else you are sharing is password protected provided you don't want to share it: printers, iPhoto and iTunes shares, etc.
+For Mac, Linux, and BSD, just type "make" (or "gmake" on BSD). You won't need much installed; here are the requirements for various platforms:
 
-ZeroTier One is licensed under the GNU General Public License version 3. Anyone wishing to embed this in a commercial product or create a derivative product should contact [ZeroTier Networks LLC](https://www.zerotier.com/) to obtain a commercial license.
+ * Mac: Xcode command line tools, and [Packages](http://s.sudre.free.fr/Software/Packages/about.html) if you want to build an OSX .pkg installer ("make mac-dist-pkg"). It should build on OSX 10.7 or newer.
+ * Linux: gcc/g++ or clang/clang++ (Makefile will use clang by default if available.)
+ * FreeBSD (and other BSD): C++ compiler (G++ usually) and GNU make (gmake).
 
-Check out the [blog](http://blog.zerotier.com/) for announcements, in-depth articles, and related thoughts. There is also a [Google group](https://groups.google.com/forum/#!forum/zerotier-one-users) for questions and discussion.
+Each supported platform has its own *make-XXX.mk* file that contains the actual make rules for the platform. The right .mk file is included by the main Makefile based on the GNU make *OSTYPE* variable. Take a look at the .mk file for your platform for other targets, debug build rules, etc.
 
-----
-**FAQ**
+Windows, of course, is special. We build for Windows with Microsoft Visual Studio 2012 on Windows 7. A solution file is located in the *windows* subfolder. Newer versions of Visual Studio (and Windows) may work but haven't been tested. Older versions almost certainly will not, since they lack things like *stdint.h* and certain STL features. MinGW or other ports of gcc/clang to Windows should also work but haven't been tested. Build steps for Windows are a bit more complicated. For the moment you are on your own there.
 
-**Q:** What can I do with this?  
-**A:** For starters, try opening iTunes if you have it installed. If others are also online and sharing their collections, you might see them. If you have any games that run over a LAN (except those that require IPX), try those. What else can you think of to do on a completely flat, open network? Collaborative software development? Remote debugging? Transferring files using simple drive shares? Sharing your desktop printer to someone on another continent? Use your imagination.
+Mobile versions are in progress. They don't work yet, and in any case only the glue code will be included in this repository. The full mobile apps are in private repositories on our own git server.
 
-**Q:** Why do I get an IP address in the 27.0.0.0 or 28.0.0.0 range? And why does a lookup claim these addresses belong to the U.S. Department of Defense?  
-**A:** Short answer: because IPv4 needs to die. Long answer: the Earth network assigns IPv4 IPs from these ranges. They do in fact belong to the DOD, but they are *not* routed to the open Internet. The DOD owns them but uses them internally for private networks. As a result, there is nothing *technically* wrong with "bogarting" these for our own private network. It's considered bad practice, but if you want a private address space in IPv4 that is unlikely to overlap other private address spaces (like 10/8 and 192.168/16), it's the only way. [Cellular carriers](http://www.androidcentral.com/sprint-internet-dept-defense-and-you)  and [cable companies](http://www.dslreports/forum/r25679029-Why-is-my-first-hop-to-a-DoD-assigned-IP-address-) frequently do the same thing.
+### Supported Platforms
 
-**Q:** Is IPv6 supported?  
-**A:** Yes. IPv6 link-local addresses (those in the fe80::/10 block) are auto-assigned and should work fine. No other IPv6 addresses are assigned *yet*, but there are plans to do interesting things in this area in the future.
+CPU architecture shouldn't matter unless it's smaller than 32-bit or something really bizarre like a "middle-endian" processor. We have reports of ZeroTier One running on arm32, arm64, and MIPS. It builds and runs out of the box on Raspberry Pi, BeagleBone, BananaPi, and other ARM-based developer/hobbyist boards.
 
-**Q:** Are you going to charge for this?  
-**A:** Public networks will remain free, but we intend to charge for private virtual LANs. ZeroTier has other ideas too, but they're top secret for the moment.
+ZeroTier is written in C and C++ (C++03 / ISO/IEC 14882:2003) and uses data structures and algorithms from the C++03 STL. We do not use any C++11 features (yet), since we want to support a few old and embedded platforms that don't have C++11 compilers. You *will* require a compiler and headers new enough to support 64-bit integers (long long) and the *stdint.h* header. The latter could also be faked by adding defines for things like *uint32\_t*, *int64\_t*, etc.
 
-**Q:** What's a supernode?  
-**A:** Supernodes are nodes run by ZeroTier Networks that orindary users use to find one another and communicate until/unless they can perform NAT traversal and connect directly. They run the exact same software as everyone else. The only thing that really makes a supernode special is that it's designated as such.
+Typing "make selftest" will build a *zerotier-selftest* binary which unit tests various internals and reports on a few aspects of the build environment. It's a good idea to try this on novel platforms or architectures.
 
-**Q:** Can I run a supernode?  
-**A:** No, not at the moment, and there would be no benefit to doing so.
+### Running
 
-**Q:** Can you see my traffic? What about other users? Can you sniff the LAN?  
-**A:** No. All unicast (direct computer to computer) traffic is encrypted end-to-end (even if it's being relayed), and the ZeroTier virtual LAN behaves like a LAN with a secure enterprise-grade switch that does not allow unicast conversations to be sniffed. Multicast and broadcast traffic will of course be seen by many recipients, but that's the idea.
+Running *zerotier-one* with -h will show help.
 
-**Q:** You say "almost unlimited size." Isn't multicast and broadcast traffic eventually going to be too much? What happens then?  
-**A:** ZeroTier One uses an algorithm called *implicit social switching*. The overall maximum number of recipients for a multicast is limited, so if there are too many listeners to a given multicast address then obviously not everyone will receive every message. So who does? Social switching causes multicasts to propagate in the direction of peers to whom you have recently communicated. As a result, multicasts tend to propagate along lines of association. The people most likely to get your service announcements are those with whom you frequently connect.
+On Linux and BSD you can start the service with:
 
-**Q:** I don't see broadcasts.  
-**A:** At the moment only Ethernet multicast is propagated, not broadcast (ff:ff:ff:ff:ff:ff). This may change in the future. IPv4 ARP uses broadcast but is handled by special code that subscribes to a multicast group using the broadcast address combined with the IPv4 address to make it address-specific. See comments in MulticastGroup.hpp for deeper technical details.
+    sudo ./zerotier-one -d
 
-----
-**Status**
+A home folder for your system will automatically be created.
 
-*What works:*
- * Network auto-configuration via JSON API with identity based authentication and encryption
- * End-to-end encryption with automatic key exchange
- * Ethernet multicast with implicit social propagation (though the algorithm will certainly be getting tweaked as we go)
-   * IPv4 ARP works (see MulticastGroup.hpp for details)
-   * IPv6 neighbor discovery protocol works, thus IPv6 link-local addressing on the ZeroTier device also works
-   * mDNS (though if the LAN gets big you will not see everyone, just people nearby on your implicit social graph)
-   * IP-level multicast ought to "just work," though it may take up to a minute or so for a new join to propagate
- * NAT traversal works pretty well, at least behind relatively sane unrestrictive firewalls/routers. You can see this by pinging another node and watching, after a few seconds, the latency drop dramatically since you're no longer relaying. If it doesn't your firewall might block such things. Additional NAT traversal strategies are coming.
- * Changes in your local network configuration are generally detected and will cause peers to be re-acquired.
+The service is controlled via the JSON API, which by default is available at 127.0.0.1 port 9993. We include a *zerotier-cli* command line utility to make API calls for standard things like joining and leaving networks. The *authtoken.secret* file in the home folder contains the secret token for accessing this API. See README.md in [service/](service/) for API documentation.
 
-*Known immediate issues:*
- * Multiple network support is in but there is no interface to configure it, hence it is useless. But in alpha it'll be nice to shove everyone onto "Earth" in order to stress test that little "almost unlimited size" boast. LAN party!
-   * Multiple networks would currently all have the same MAC, which some OSes may not like. There is a possible strategy for dealing with this, but it needs to be explored.
- * There is no multiple-launch protection yet. If you launch more than one instance on the same working directory everything breaks. Take care that zerotier-one is not running before launching it again. The command "sudo killall zerotier-one" is helpful.
- * Sometimes ZeroTier One doesn't like to terminate when asked nicely. This is related to issues with the tap device closing down properly. If it hangs around after a TERM signal, send it a KILL (9) signal.
- * The locally bound UDP port isn't configurable yet. It's 8993 by default.
- * Known security issues:
-   * There is no rate limit for multicast. Please be nice during alpha testing and don't flood.
-   * There is no filtering. Whether or not to try to do port-level filtering is not yet decided, as technically the local OS firewall and OS service configuration should do this and ZeroTier is not about re-inventing wheels. But certain things *will*need to be filtered by ZT1 itself. These include certain ICMP and ICMPv6 messages: router advertisement, router solicitation, source redirect, etc. DHCP and BOOTP should probably also be filtered at a minimum.
-   * ARP and IPv6 NDP want extra security measures to prevent poisoning and spoofing. The best mechanism is being researched.
- * If a supernode goes down, this takes quite a while to be detected and things will go dead. Fast recovery from relay failure is in the works.
- * If by a one in 2^40 chance two people generate the same ZeroTier address, this is currently not handled. It's unlikely and also hard (as in cryptographically hard) to do intentionally. See comments in Identity.cpp for details.
+Here's where home folders live (by default) on each OS:
 
-*What doesn't work and might not work for a while, if ever:*
- * Only ARP, IPv4, and IPv6 frames are allowed. The ability to permit other ethertypes on user-created networks may be added later to allow things like old games that use IPX or private networks to remote administer weird hardware.
- * Bridging of the ZeroTier device to other networks will not work, and may never. This is TBD.
- * VLAN tagged frames will not work and probably never will, as higher level network provisioning handles that concept.
+ * Linux: /var/lib/zerotier-one
+ * BSD: /var/db/zerotier-one
+ * Mac: /Library/Application Support/ZeroTier/One
+ * Windows: \\ProgramData\\ZeroTier\\One (That's for Windows 7. The base 'shared app data' folder might be different on different Windows versions.)
 
-----
+Running ZeroTier One on a Mac is the same, but OSX requires a kernel extension. We ship a signed binary build of the ZeroTier tap device driver, which can be installed on Mac with:
 
-(c)2012-2013 [ZeroTier Networks LLC](https://www.zerotier.com/)
+    sudo make install-mac-tap
+
+This will create the home folder for Mac, place *tap.kext* there, and set its modes correctly to enable ZeroTier One to manage it with *kextload* and *kextunload*.
+
+We recommend using our binary packages on Windows, since there are several prerequisites such as a tap driver that must be installed on the system *and* in the home folder.
+
+### Joining A Network
+
+ZeroTier virtual networks are identified by 16-digit hexadecimal network IDs, while devices are identified by 10-digit addresses. To get your address run:
+
+    sudo zerotier-cli status
+
+(Use ./zerotier-cli if you're running it right from your build folder.)
+
+You should see something like:
+
+    200 info ########## ONLINE #.#.#
+
+That 10-digit hex code is you. It's derived via a one-way proof of work function from your cryptographic public key. Your public key can be found in *identity.public* in ZeroTier's home folder, while *identity.secret* contains your full identity including the secret portion of the key pair.
+
+(The identity files define your device's *identity*. Moving them to another system will move that identity. Be careful when cloning virtual machines that have identities stored on them. If two devices have the same identity, they'll "fight" over it and you won't know which device will receive network packets.)
+
+If you want to do a quick test, you can join [Earth](https://www.zerotier.com/earth.html). It's a global public network that anyone can join. Type:
+
+    sudo zerotier-cli join 8056c2e21c000001
+
+Then:
+
+    sudo zerotier-cli listnetworks
+
+At first it'll be in *REQUESTING\_CONFIGURATION* state. In a few seconds to a minute you should see something like:
+
+    200 listnetworks 8056c2e21c000001 earth.zerotier.net ##:##:##:##:##:## OK PUBLIC zt0 ##.##.##.##/##
+
+Earth will assign you an IP address in the "unofficially available" globally unrouted 28.0.0.0/7 IP block so as to avoid conflicts with local networks. (Your networks can use any IP scheme, or can even leave IP addresses unmanaged.) Once you get an IP, you should be able to ping something:
+
+    ping earth.zerotier.net
+
+Go to [http://earth.zerotier.net/](http://earth.zerotier.net/) to see a short little welcome page that will tell you your IP and Ethernet MAC address.
+
+Earth is a public place. If you don't want to stick around run:
+
+    sudo zerotier-cli leave 8056c2e21c000001
+
+The network (and associated interface) should be gone.
+
+Networks are created and administrated by network controllers. Most users will want to use our hosted controllers. Visit [our web site](https://www.zerotier.com/) for more information. Later in this README there are brief instructions about building ZeroTier One with network controller support for those who want to try running their own.
+
+Macintosh and Windows installers also install a GUI application.
+
+### Installing
+
+We don't have a "make install" rule quite yet. On Linux you can type:
+
+    make installer
+
+This will build a binary that, when run, will install ZeroTier One on most current Linux distributions. We also have RPM and DEB build files in *ext/installfiles/linux* that wrap this installer in packages for RedHat/CentOS and Debian/Ubuntu derived distributions. If *rpmbuild* is present on the system, the RPM will be built. If *dpkg-deb* is present, the DEB package will be built.
+
+On Mac the best way is to install [Packages](http://s.sudre.free.fr/Software/Packages/about.html) and use:
+
+    make mac-dist-pkg
+
+This builds a .pkg file that can be installed.
+
+BSD has no installer yet. We're working on it.
+
+Linux/BSD and Mac installations have an *uninstall.sh* file in their ZeroTier home folder that cleanly removes ZeroTier One from the system. Run this with:
+
+    sudo /path/to/ZeroTier/home/folder/uninstall.sh
+
+Windows installers are insane. We build our .MSI installers with [Advanced Installer Enterprise](http://www.advancedinstaller.com). The Advanced Installer project file is in *ext/installfiles/windows*. To avoid lasting psychological trauma we recommend leaving Windows installers alone and using the pre-built Windows binaries on our web site.
+
+### Using ZeroTier One in Docker Containers
+
+To run the ZeroTier One service in a Docker container, run it with "--device=/dev/net/tun --cap-add=NET_ADMIN". This will allow ZeroTier One to open a "tap" virtual network port inside the container.
+
+Alternately, you can use Ethernet bridging to bridge the *docker0* device on your system to a ZeroTier virtual network. This allows you to run ZeroTier One on the host and bridge the entire Docker network backplane to a virtual network or other hosts.
+
+We're working on better "official" Docker support. In the meantime there is a [user-contributed project here](https://github.com/davide/docker-zerotier).
+
+### Building with Network Controller Support
+
+**Warning: as of beta version 1.0.3 the new network controller is not heavily tested. We recommend waiting for 1.0.4 to deploy this in production.**
+
+Network controllers are nodes responsible for issuing configurations and certificates to members of ZeroTier virtual networks. Most users won't need to run their own, so this code is by default not included in the ZeroTier One binary.
+
+You can build a network controller on Linux or Mac with:
+
+    make ZT_ENABLE_NETWORK_CONTROLLER=1
+
+This will build a version that contains the Sqlite-backed network controller and associated extensions to the JSON local service control API. You will need the development headers for sqlite3 installed. On Mac these ship as part of Xcode, while on Linux they'll be found in packages for the various distributions.
+
+See the JSON API documentation in [service/](service/) for more information about how to control controllers.
+
+### Troubleshooting
+
+For most users, it just works.
+
+If you are running a local system firewall, we recommend adding a rule permitting UDP port 9993 inbound and outbound. If you installed binaries for Windows this should be done automatically. Other platforms might require manual editing of local firewall rules depending on your configuration.
+
+The Mac firewall can be founder under "Security" in System Preferences. Linux has a variety of firewall configuration systems and tools. If you're using Ubuntu's *ufw*, you can do this:
+
+    sudo ufw allow 9993/udp
+
+On CentOS check */etc/sysconfig/iptables* for IPTables rules. For other distributions consult your distribution's documentation. You'll also have to check the UIs or documentation for commercial third party firewall applications like Little Snitch (Mac), McAfee Firewall Enterprise (Windows), etc. if you are running any of those. Some corporate environments might have centrally managed firewall software, so you might also have to contact IT.
+
+ZeroTier One peers will automatically locate each other and communicate directly over a local wired LAN *if UDP port 9993 inbound is open*. If that port is filtered, they won't be able to see each others' LAN announcement packets. If you're experiencing poor performance between devices on the same physical network, check their firewall settings. Without LAN auto-location peers must attempt "loopback" NAT traversal, which sometimes fails and in any case requires that every packet traverse your external router twice.
+
+Users behind certain types of firewalls and "symmetric" NAT devices may not able able to connect to external peers directly at all. ZeroTier has limited support for port prediction and will *attempt* to traverse symmetric NATs, but this doesn't always work. If P2P connectivity fails you'll be bouncing UDP packets off our relay servers resulting in slower performance. Some NAT router(s) have a configurable NAT mode, and setting this to "full cone" will eliminate this problem. If you do this you may also see a magical improvement for things like VoIP phones, Skype, BitTorrent, WebRTC, certain games, etc., since all of these use NAT traversal techniques similar to ours.
+
+If you're interested, there's a [technical deep dive about NAT traversal on our blog](https://www.zerotier.com/blog/?p=226). A troubleshooting tool to help you diagnose NAT issues is planned for the future as are uPnP/IGD/NAT-PMP and IPv6 transport.
+
+If a firewall between you and the Internet blocks ZeroTier's UDP traffic, you will fall back to last-resort TCP tunneling to rootservers over port 443 (https impersonation). This will work almost anywhere but is *very slow* compared to UDP or direct peer to peer connectivity.
+
+### License
+
+The ZeroTier source code is open source and is licensed under the GNU GPL v3 (not LGPL). If you'd like to embed it in a closed-source commercial product or appliance, please e-mail [contact@zerotier.com](mailto:contact@zerotier.com) to discuss commercial licensing. Otherwise it can be used for free.

RUNNING.txt

@@ -1,47 +0,0 @@
-Running ZeroTier One from a source build:
-
--- MacOS
-
-By convention, ZeroTier One will keep its state here on mac:
-
-/Library/Application Support/ZeroTier/One
-
-ZeroTier ships with a kernel extension for its own tap device, which it
-stores in the above directory. To install this from source, type:
-
-sudo make install-mac-tap
-
-This will create the ZeroTier One home above if it does not exist and install
-the kext there. Note that the kext must be owned by root:wheel. The make
-rule for install-mac-tap takes care of that.
-
-Next, simply run the binary. It must be run as root to open the tap device.
-
-sudo ./zerotier-one '/Library/Application Support/ZeroTier/One' &
-
-Type "ifconfig" and look for the new interface, which should be called
-"zt0." The strange IPv4 address it has is your "zero4" address. Visit
-http://zerotier.net/ to check your connection.
-
-Kill it with something like:
-
-sudo killall zerotier-one
-
--- Linux
-
-On Linux, the default ZeroTier home is:
-
-/var/lib/zerotier-one
-
-We use the Linux native tap driver, so no special drivers are needed. Just
-type:
-
-sudo mkdir /var/lib/zerotier-one
-sudo ./zerotier-one /var/lib/zerotier-one &
-
-Type ifconfig and you should see an interface like "zt0." Then try
-http://zerotier.net or ping zerotier.net to check your connection.
-
--- Windows
-
-TBD

artwork/logo.html

@@ -0,0 +1,37 @@
+<html>
+<head>
+<style type="text/css">
+html,body {
+	background: #aaaaaa;
+	margin: 0;
+	padding: 0;
+	font-family: "Helvetica";
+	font-weight: bold;
+	font-size: 12pt;
+	height: 100%;
+	width: 100%;
+}
+div.icon {
+	background: #ffb354;
+	color: #000000;
+	font-size: 150pt;
+	border-radius: 2.5rem;
+	display: inline-block;
+	width: 1.3em;
+	height: 1.3em;
+	padding: 0;
+	margin: 0;
+	line-height: 1.4em;
+	vertical-align: middle;
+	text-align: center;
+}
+</style>
+</head>
+<body>
+<br><br><br><br><br><br>
+<!-- Yes, our logo is a Unicode character. It sort of just turned out that way. -->
+<center>
+<div class="icon">&#x23c1;</div>
+</center>
+</body>
+</html>

attic/BandwidthAccount.hpp

@@ -0,0 +1,153 @@
+/*
+ * ZeroTier One - Network Virtualization Everywhere
+ * Copyright (C) 2011-2015  ZeroTier, Inc.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ * --
+ *
+ * ZeroTier may be used and distributed under the terms of the GPLv3, which
+ * are available at: http://www.gnu.org/licenses/gpl-3.0.html
+ *
+ * If you would like to embed ZeroTier into a commercial application or
+ * redistribute it in a modified binary form, please contact ZeroTier Networks
+ * LLC. Start here: http://www.zerotier.com/
+ */
+
+#ifndef ZT_BWACCOUNT_HPP
+#define ZT_BWACCOUNT_HPP
+
+#include "Constants.hpp"
+
+#include <algorithm>
+
+#include <stdint.h>
+#include <math.h>
+
+#include "Utils.hpp"
+
+#ifdef __WINDOWS__
+#define	round(x) ((x-floor(x))>0.5 ? ceil(x) : floor(x))
+#endif
+
+namespace ZeroTier {
+
+/**
+ * Bandwidth account used for rate limiting multicast groups
+ *
+ * This is used to apply a bank account model to multicast groups. Each
+ * multicast packet counts against a balance, which accrues at a given
+ * rate in bytes per second. Debt is possible. These parameters are
+ * configurable.
+ *
+ * A bank account model permits bursting behavior, which correctly models
+ * how OSes and apps typically use multicast. It's common for things to
+ * spew lots of multicast messages at once, wait a while, then do it
+ * again. A consistent bandwidth limit model doesn't fit.
+ */
+class BandwidthAccount
+{
+public:
+	/**
+	 * Create an uninitialized account
+	 *
+	 * init() must be called before this is used.
+	 */
+	BandwidthAccount() throw() {}
+
+	/**
+	 * Create and initialize
+	 *
+	 * @param preload Initial balance to place in account
+	 * @param maxb Maximum allowed balance (> 0)
+	 * @param acc Rate of accrual in bytes per second
+	 * @param now Current time
+	 */
+	BandwidthAccount(uint32_t preload,uint32_t maxb,uint32_t acc,uint64_t now)
+		throw()
+	{
+		init(preload,maxb,acc,now);
+	}
+
+	/**
+	 * Initialize or re-initialize account
+	 *
+	 * @param preload Initial balance to place in account
+	 * @param maxb Maximum allowed balance (> 0)
+	 * @param acc Rate of accrual in bytes per second
+	 * @param now Current time
+	 */
+	inline void init(uint32_t preload,uint32_t maxb,uint32_t acc,uint64_t now)
+		throw()
+	{
+		_lastTime = ((double)now / 1000.0);
+		_balance = preload;
+		_maxBalance = maxb;
+		_accrual = acc;
+	}
+
+	/**
+	 * Update and retrieve balance of this account
+	 *
+	 * @param now Current time
+	 * @return New balance updated from current clock
+	 */
+	inline uint32_t update(uint64_t now)
+		throw()
+	{
+		double lt = _lastTime;
+		double nowf = ((double)now / 1000.0);
+		_lastTime = nowf;
+		return (_balance = std::min(_maxBalance,(uint32_t)round((double)_balance + ((double)_accrual * (nowf - lt)))));
+	}
+
+	/**
+	 * Update balance and conditionally deduct
+	 *
+	 * If the deduction amount fits, it is deducted after update. Otherwise
+	 * balance is updated and false is returned.
+	 *
+	 * @param amt Amount to deduct
+	 * @param now Current time
+	 * @return True if amount fit within balance and was deducted
+	 */
+	inline bool deduct(uint32_t amt,uint64_t now)
+		throw()
+	{
+		if (update(now) >= amt) {
+			_balance -= amt;
+			return true;
+		}
+		return false;
+	}
+
+	/**
+	 * @return Most recent balance without update
+	 */
+	inline uint32_t balance() const
+		throw()
+	{
+		return _balance;
+	}
+
+private:
+	double _lastTime;
+	uint32_t _balance;
+	uint32_t _maxBalance;
+	uint32_t _accrual;
+};
+
+} // namespace ZeroTier
+
+#endif

attic/Filter.cpp

@@ -0,0 +1,408 @@
+/*
+ * ZeroTier One - Network Virtualization Everywhere
+ * Copyright (C) 2011-2015  ZeroTier, Inc.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ * --
+ *
+ * ZeroTier may be used and distributed under the terms of the GPLv3, which
+ * are available at: http://www.gnu.org/licenses/gpl-3.0.html
+ *
+ * If you would like to embed ZeroTier into a commercial application or
+ * redistribute it in a modified binary form, please contact ZeroTier Networks
+ * LLC. Start here: http://www.zerotier.com/
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <stdint.h>
+
+#include <algorithm>
+
+#include "RuntimeEnvironment.hpp"
+#include "Logger.hpp"
+#include "Filter.hpp"
+#include "Utils.hpp"
+
+namespace ZeroTier {
+
+const char *const Filter::UNKNOWN_NAME = "(unknown)";
+const Range<unsigned int> Filter::ANY;
+
+static inline Range<unsigned int> __parseRange(char *r)
+	throw(std::invalid_argument)
+{
+	char *saveptr = (char *)0;
+	unsigned int a = 0;
+	unsigned int b = 0;
+	unsigned int fn = 0;
+	for(char *f=Utils::stok(r,"-",&saveptr);(f);f=Utils::stok((char *)0,"-",&saveptr)) {
+		if (*f) {
+			switch(fn++) {
+				case 0:
+					if (*f != '*')
+						a = b = (unsigned int)strtoul(f,(char **)0,10);
+					break;
+				case 1:
+					if (*f != '*')
+						b = (unsigned int)strtoul(f,(char **)0,10);
+					break;
+				default:
+					throw std::invalid_argument("rule range must be <int>, <int>-<int>, or *");
+			}
+		}
+	}
+	return Range<unsigned int>(a,b);
+}
+
+Filter::Rule::Rule(const char *s)
+	throw(std::invalid_argument)
+{
+	char *saveptr = (char *)0;
+	char tmp[256];
+	if (!Utils::scopy(tmp,sizeof(tmp),s))
+		throw std::invalid_argument("rule string too long");
+	unsigned int fn = 0;
+	for(char *f=Utils::stok(tmp,";",&saveptr);(f);f=Utils::stok((char *)0,";",&saveptr)) {
+		if (*f) {
+			switch(fn++) {
+				case 0:
+					_etherType = __parseRange(f);
+					break;
+				case 1:
+					_protocol = __parseRange(f);
+					break;
+				case 2:
+					_port = __parseRange(f);
+					break;
+				default:
+					throw std::invalid_argument("rule string has unknown extra fields");
+			}
+		}
+	}
+	if (fn != 3)
+		throw std::invalid_argument("rule string must contain 3 fields");
+}
+
+bool Filter::Rule::operator()(unsigned int etype,const void *data,unsigned int len) const
+	throw(std::invalid_argument)
+{
+	if ((!_etherType)||(_etherType(etype))) { // ethertype is ANY, or matches
+		// Ethertype determines meaning of protocol and port
+		switch(etype) {
+			case ZT_ETHERTYPE_IPV4:
+				if (len > 20) {
+					if ((!_protocol)||(_protocol(((const uint8_t *)data)[9]))) { // protocol is ANY or match
+						if (!_port) // port is ANY
+							return true;
+
+						// Don't match on fragments beyond fragment 0. If we've blocked
+						// fragment 0, further fragments will fall on deaf ears anyway.
+						if ((Utils::ntoh(((const uint16_t *)data)[3]) & 0x1fff))
+							return false;
+
+						// Internet header length determines where data begins, in multiples of 32 bits
+						unsigned int ihl = 4 * (((const uint8_t *)data)[0] & 0x0f);
+
+						switch(((const uint8_t *)data)[9]) { // port's meaning depends on IP protocol
+							case ZT_IPPROTO_ICMP:
+								// For ICMP, port is ICMP type
+								return _port(((const uint8_t *)data)[ihl]);
+							case ZT_IPPROTO_TCP:
+							case ZT_IPPROTO_UDP:
+							case ZT_IPPROTO_SCTP:
+							case ZT_IPPROTO_UDPLITE:
+								// For these, port is destination port. Protocol designers were
+								// nice enough to put the field in the same place.
+								return _port(((const uint16_t *)data)[(ihl / 2) + 1]);
+							default:
+								// port has no meaning for other IP types, so ignore it
+								return true;
+						}
+
+						return false; // no match on port
+					}
+				} else throw std::invalid_argument("undersized IPv4 packet");
+				break;
+
+			case ZT_ETHERTYPE_IPV6:
+				if (len > 40) {
+					int nextHeader = ((const uint8_t *)data)[6];
+					unsigned int pos = 40;
+					while ((pos < len)&&(nextHeader >= 0)&&(nextHeader != 59)) { // 59 == no next header
+						fprintf(stderr,"[rule] V6: start header parse, header %.2x pos %d\n",nextHeader,pos);
+
+						switch(nextHeader) {
+							case 0: // hop-by-hop options
+							case 60: // destination options
+							case 43: // routing
+							case 135: // mobility (mobile IPv6 options)
+								if (_protocol((unsigned int)nextHeader))
+									return true; // match if our goal was to match any of these
+								nextHeader = ((const uint8_t *)data)[pos];
+								pos += 8 + (8 * ((const uint8_t *)data)[pos + 1]);
+								break;
+							case 44: // fragment
+								if (_protocol(44))
+									return true; // match if our goal was to match fragments
+								nextHeader = ((const uint8_t *)data)[pos];
+								pos += 8;
+								break;
+							case ZT_IPPROTO_AH: // AH
+								return _protocol(ZT_IPPROTO_AH); // true if AH is matched protocol, otherwise false since packet will be IPsec
+							case ZT_IPPROTO_ESP: // ESP
+								return _protocol(ZT_IPPROTO_ESP); // true if ESP is matched protocol, otherwise false since packet will be IPsec
+							case ZT_IPPROTO_ICMPV6:
+								// Only match ICMPv6 if we've selected it specifically
+								if (_protocol(ZT_IPPROTO_ICMPV6)) {
+									// Port is interpreted as ICMPv6 type
+									if ((!_port)||(_port(((const uint8_t *)data)[pos])))
+										return true;
+								}
+								break;
+							case ZT_IPPROTO_TCP:
+							case ZT_IPPROTO_UDP:
+							case ZT_IPPROTO_SCTP:
+							case ZT_IPPROTO_UDPLITE:
+								// If we encounter any of these, match if protocol matches or is wildcard as
+								// we'll consider these the "real payload" if present.
+								if ((!_protocol)||(_protocol(nextHeader))) {
+									if ((!_port)||(_port(((const uint16_t *)data)[(pos / 2) + 1])))
+										return true; // protocol matches or is ANY, port is ANY or matches
+								}
+								break;
+							default: {
+								char foo[128];
+								Utils::snprintf(foo,sizeof(foo),"unrecognized IPv6 header type %d",(int)nextHeader);
+								throw std::invalid_argument(foo);
+							}
+						}
+
+						fprintf(stderr,"[rule] V6: end header parse, next header %.2x, new pos %d\n",nextHeader,pos);
+					}
+				} else throw std::invalid_argument("undersized IPv6 packet");
+				break;
+
+			default:
+				// For other ethertypes, protocol and port are ignored. What would they mean?
+				return true;
+		}
+	}
+
+	return false;
+}
+
+std::string Filter::Rule::toString() const
+{
+	char buf[128];
+	std::string s;
+
+	switch(_etherType.magnitude()) {
+		case 0:
+			s.push_back('*');
+			break;
+		case 1:
+			Utils::snprintf(buf,sizeof(buf),"%u",_etherType.start);
+			s.append(buf);
+			break;
+		default:
+			Utils::snprintf(buf,sizeof(buf),"%u-%u",_etherType.start,_etherType.end);
+			s.append(buf);
+			break;
+	}
+	s.push_back(';');
+	switch(_protocol.magnitude()) {
+		case 0:
+			s.push_back('*');
+			break;
+		case 1:
+			Utils::snprintf(buf,sizeof(buf),"%u",_protocol.start);
+			s.append(buf);
+			break;
+		default:
+			Utils::snprintf(buf,sizeof(buf),"%u-%u",_protocol.start,_protocol.end);
+			s.append(buf);
+			break;
+	}
+	s.push_back(';');
+	switch(_port.magnitude()) {
+		case 0:
+			s.push_back('*');
+			break;
+		case 1:
+			Utils::snprintf(buf,sizeof(buf),"%u",_port.start);
+			s.append(buf);
+			break;
+		default:
+			Utils::snprintf(buf,sizeof(buf),"%u-%u",_port.start,_port.end);
+			s.append(buf);
+			break;
+	}
+
+	return s;
+}
+
+Filter::Filter(const char *s)
+	throw(std::invalid_argument)
+{
+	char tmp[16384];
+	if (!Utils::scopy(tmp,sizeof(tmp),s))
+		throw std::invalid_argument("filter string too long");
+	char *saveptr = (char *)0;
+	unsigned int fn = 0;
+	for(char *f=Utils::stok(tmp,",",&saveptr);(f);f=Utils::stok((char *)0,",",&saveptr)) {
+		try {
+			_rules.push_back(Rule(f));
+			++fn;
+		} catch (std::invalid_argument &exc) {
+			char tmp[256];
+			Utils::snprintf(tmp,sizeof(tmp),"invalid rule at index %u: %s",fn,exc.what());
+			throw std::invalid_argument(tmp);
+		}
+	}
+	std::sort(_rules.begin(),_rules.end());
+}
+
+std::string Filter::toString() const
+{
+	std::string s;
+
+	for(std::vector<Rule>::const_iterator r(_rules.begin());r!=_rules.end();++r) {
+		if (s.length() > 0)
+			s.push_back(',');
+		s.append(r->toString());
+	}
+
+	return s;
+}
+
+void Filter::add(const Rule &r)
+{
+	for(std::vector<Rule>::iterator rr(_rules.begin());rr!=_rules.end();++rr) {
+		if (r == *rr)
+			return;
+	}
+	_rules.push_back(r);
+	std::sort(_rules.begin(),_rules.end());
+}
+
+const char *Filter::etherTypeName(const unsigned int etherType)
+	throw()
+{
+	switch(etherType) {
+		case ZT_ETHERTYPE_IPV4:  return "ETHERTYPE_IPV4";
+		case ZT_ETHERTYPE_ARP:   return "ETHERTYPE_ARP";
+		case ZT_ETHERTYPE_RARP:  return "ETHERTYPE_RARP";
+		case ZT_ETHERTYPE_ATALK: return "ETHERTYPE_ATALK";
+		case ZT_ETHERTYPE_AARP:  return "ETHERTYPE_AARP";
+		case ZT_ETHERTYPE_IPX_A: return "ETHERTYPE_IPX_A";
+		case ZT_ETHERTYPE_IPX_B: return "ETHERTYPE_IPX_B";
+		case ZT_ETHERTYPE_IPV6:  return "ETHERTYPE_IPV6";
+	}
+	return UNKNOWN_NAME;
+}
+
+const char *Filter::ipProtocolName(const unsigned int ipp)
+	throw()
+{
+	switch(ipp) {
+		case ZT_IPPROTO_ICMP:    return "IPPROTO_ICMP";
+		case ZT_IPPROTO_IGMP:    return "IPPROTO_IGMP";
+		case ZT_IPPROTO_TCP:     return "IPPROTO_TCP";
+		case ZT_IPPROTO_UDP:     return "IPPROTO_UDP";
+		case ZT_IPPROTO_GRE:     return "IPPROTO_GRE";
+		case ZT_IPPROTO_ESP:     return "IPPROTO_ESP";
+		case ZT_IPPROTO_AH:      return "IPPROTO_AH";
+		case ZT_IPPROTO_ICMPV6:  return "IPPROTO_ICMPV6";
+		case ZT_IPPROTO_OSPF:    return "IPPROTO_OSPF";
+		case ZT_IPPROTO_IPIP:    return "IPPROTO_IPIP";
+		case ZT_IPPROTO_IPCOMP:  return "IPPROTO_IPCOMP";
+		case ZT_IPPROTO_L2TP:    return "IPPROTO_L2TP";
+		case ZT_IPPROTO_SCTP:    return "IPPROTO_SCTP";
+		case ZT_IPPROTO_FC:      return "IPPROTO_FC";
+		case ZT_IPPROTO_UDPLITE: return "IPPROTO_UDPLITE";
+		case ZT_IPPROTO_HIP:     return "IPPROTO_HIP";
+	}
+	return UNKNOWN_NAME;
+}
+
+const char *Filter::icmpTypeName(const unsigned int icmpType)
+	throw()
+{
+	switch(icmpType) {
+		case ZT_ICMP_ECHO_REPLY:                  return "ICMP_ECHO_REPLY";
+		case ZT_ICMP_DESTINATION_UNREACHABLE:     return "ICMP_DESTINATION_UNREACHABLE";
+		case ZT_ICMP_SOURCE_QUENCH:               return "ICMP_SOURCE_QUENCH";
+		case ZT_ICMP_REDIRECT:                    return "ICMP_REDIRECT";
+		case ZT_ICMP_ALTERNATE_HOST_ADDRESS:      return "ICMP_ALTERNATE_HOST_ADDRESS";
+		case ZT_ICMP_ECHO_REQUEST:                return "ICMP_ECHO_REQUEST";
+		case ZT_ICMP_ROUTER_ADVERTISEMENT:        return "ICMP_ROUTER_ADVERTISEMENT";
+		case ZT_ICMP_ROUTER_SOLICITATION:         return "ICMP_ROUTER_SOLICITATION";
+		case ZT_ICMP_TIME_EXCEEDED:               return "ICMP_TIME_EXCEEDED";
+		case ZT_ICMP_BAD_IP_HEADER:               return "ICMP_BAD_IP_HEADER";
+		case ZT_ICMP_TIMESTAMP:                   return "ICMP_TIMESTAMP";
+		case ZT_ICMP_TIMESTAMP_REPLY:             return "ICMP_TIMESTAMP_REPLY";
+		case ZT_ICMP_INFORMATION_REQUEST:         return "ICMP_INFORMATION_REQUEST";
+		case ZT_ICMP_INFORMATION_REPLY:           return "ICMP_INFORMATION_REPLY";
+		case ZT_ICMP_ADDRESS_MASK_REQUEST:        return "ICMP_ADDRESS_MASK_REQUEST";
+		case ZT_ICMP_ADDRESS_MASK_REPLY:          return "ICMP_ADDRESS_MASK_REPLY";
+		case ZT_ICMP_TRACEROUTE:                  return "ICMP_TRACEROUTE";
+		case ZT_ICMP_MOBILE_HOST_REDIRECT:        return "ICMP_MOBILE_HOST_REDIRECT";
+		case ZT_ICMP_MOBILE_REGISTRATION_REQUEST: return "ICMP_MOBILE_REGISTRATION_REQUEST";
+		case ZT_ICMP_MOBILE_REGISTRATION_REPLY:   return "ICMP_MOBILE_REGISTRATION_REPLY";
+	}
+	return UNKNOWN_NAME;
+}
+
+const char *Filter::icmp6TypeName(const unsigned int icmp6Type)
+	throw()
+{
+	switch(icmp6Type) {
+		case ZT_ICMP6_DESTINATION_UNREACHABLE:              return "ICMP6_DESTINATION_UNREACHABLE";
+		case ZT_ICMP6_PACKET_TOO_BIG:                       return "ICMP6_PACKET_TOO_BIG";
+		case ZT_ICMP6_TIME_EXCEEDED:                        return "ICMP6_TIME_EXCEEDED";
+		case ZT_ICMP6_PARAMETER_PROBLEM:                    return "ICMP6_PARAMETER_PROBLEM";
+		case ZT_ICMP6_ECHO_REQUEST:                         return "ICMP6_ECHO_REQUEST";
+		case ZT_ICMP6_ECHO_REPLY:                           return "ICMP6_ECHO_REPLY";
+		case ZT_ICMP6_MULTICAST_LISTENER_QUERY:             return "ICMP6_MULTICAST_LISTENER_QUERY";
+		case ZT_ICMP6_MULTICAST_LISTENER_REPORT:            return "ICMP6_MULTICAST_LISTENER_REPORT";
+		case ZT_ICMP6_MULTICAST_LISTENER_DONE:              return "ICMP6_MULTICAST_LISTENER_DONE";
+		case ZT_ICMP6_ROUTER_SOLICITATION:                  return "ICMP6_ROUTER_SOLICITATION";
+		case ZT_ICMP6_ROUTER_ADVERTISEMENT:                 return "ICMP6_ROUTER_ADVERTISEMENT";
+		case ZT_ICMP6_NEIGHBOR_SOLICITATION:                return "ICMP6_NEIGHBOR_SOLICITATION";
+		case ZT_ICMP6_NEIGHBOR_ADVERTISEMENT:               return "ICMP6_NEIGHBOR_ADVERTISEMENT";
+		case ZT_ICMP6_REDIRECT_MESSAGE:                     return "ICMP6_REDIRECT_MESSAGE";
+		case ZT_ICMP6_ROUTER_RENUMBERING:                   return "ICMP6_ROUTER_RENUMBERING";
+		case ZT_ICMP6_NODE_INFORMATION_QUERY:               return "ICMP6_NODE_INFORMATION_QUERY";
+		case ZT_ICMP6_NODE_INFORMATION_RESPONSE:            return "ICMP6_NODE_INFORMATION_RESPONSE";
+		case ZT_ICMP6_INV_NEIGHBOR_SOLICITATION:            return "ICMP6_INV_NEIGHBOR_SOLICITATION";
+		case ZT_ICMP6_INV_NEIGHBOR_ADVERTISEMENT:           return "ICMP6_INV_NEIGHBOR_ADVERTISEMENT";
+		case ZT_ICMP6_MLDV2:                                return "ICMP6_MLDV2";
+		case ZT_ICMP6_HOME_AGENT_ADDRESS_DISCOVERY_REQUEST: return "ICMP6_HOME_AGENT_ADDRESS_DISCOVERY_REQUEST";
+		case ZT_ICMP6_HOME_AGENT_ADDRESS_DISCOVERY_REPLY:   return "ICMP6_HOME_AGENT_ADDRESS_DISCOVERY_REPLY";
+		case ZT_ICMP6_MOBILE_PREFIX_SOLICITATION:           return "ICMP6_MOBILE_PREFIX_SOLICITATION";
+		case ZT_ICMP6_MOBILE_PREFIX_ADVERTISEMENT:          return "ICMP6_MOBILE_PREFIX_ADVERTISEMENT";
+		case ZT_ICMP6_CERTIFICATION_PATH_SOLICITATION:      return "ICMP6_CERTIFICATION_PATH_SOLICITATION";
+		case ZT_ICMP6_CERTIFICATION_PATH_ADVERTISEMENT:     return "ICMP6_CERTIFICATION_PATH_ADVERTISEMENT";
+		case ZT_ICMP6_MULTICAST_ROUTER_ADVERTISEMENT:       return "ICMP6_MULTICAST_ROUTER_ADVERTISEMENT";
+		case ZT_ICMP6_MULTICAST_ROUTER_SOLICITATION:        return "ICMP6_MULTICAST_ROUTER_SOLICITATION";
+		case ZT_ICMP6_MULTICAST_ROUTER_TERMINATION:         return "ICMP6_MULTICAST_ROUTER_TERMINATION";
+		case ZT_ICMP6_RPL_CONTROL_MESSAGE:                  return "ICMP6_RPL_CONTROL_MESSAGE";
+	}
+	return UNKNOWN_NAME;
+}
+
+} // namespace ZeroTier

attic/Filter.hpp

@@ -0,0 +1,284 @@
+/*
+ * ZeroTier One - Network Virtualization Everywhere
+ * Copyright (C) 2011-2015  ZeroTier, Inc.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ * --
+ *
+ * ZeroTier may be used and distributed under the terms of the GPLv3, which
+ * are available at: http://www.gnu.org/licenses/gpl-3.0.html
+ *
+ * If you would like to embed ZeroTier into a commercial application or
+ * redistribute it in a modified binary form, please contact ZeroTier Networks
+ * LLC. Start here: http://www.zerotier.com/
+ */
+
+#ifndef _ZT_FILTER_HPP
+#define _ZT_FILTER_HPP
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include <string>
+#include <vector>
+#include <utility>
+#include <stdexcept>
+
+#include "Range.hpp"
+
+/* Ethernet frame types that might be relevant to us */
+#define ZT_ETHERTYPE_IPV4 0x0800
+#define ZT_ETHERTYPE_ARP 0x0806
+#define ZT_ETHERTYPE_RARP 0x8035
+#define ZT_ETHERTYPE_ATALK 0x809b
+#define ZT_ETHERTYPE_AARP 0x80f3
+#define ZT_ETHERTYPE_IPX_A 0x8137
+#define ZT_ETHERTYPE_IPX_B 0x8138
+#define ZT_ETHERTYPE_IPV6 0x86dd
+
+/* IP protocols we might care about */
+#define ZT_IPPROTO_ICMP 0x01
+#define ZT_IPPROTO_IGMP 0x02
+#define ZT_IPPROTO_TCP 0x06
+#define ZT_IPPROTO_UDP 0x11
+#define ZT_IPPROTO_GRE 0x2f
+#define ZT_IPPROTO_ESP 0x32
+#define ZT_IPPROTO_AH 0x33
+#define ZT_IPPROTO_ICMPV6 0x3a
+#define ZT_IPPROTO_OSPF 0x59
+#define ZT_IPPROTO_IPIP 0x5e
+#define ZT_IPPROTO_IPCOMP 0x6c
+#define ZT_IPPROTO_L2TP 0x73
+#define ZT_IPPROTO_SCTP 0x84
+#define ZT_IPPROTO_FC 0x85
+#define ZT_IPPROTO_UDPLITE 0x88
+#define ZT_IPPROTO_HIP 0x8b
+
+/* IPv4 ICMP types */
+#define ZT_ICMP_ECHO_REPLY 0
+#define ZT_ICMP_DESTINATION_UNREACHABLE 3
+#define ZT_ICMP_SOURCE_QUENCH 4
+#define ZT_ICMP_REDIRECT 5
+#define ZT_ICMP_ALTERNATE_HOST_ADDRESS 6
+#define ZT_ICMP_ECHO_REQUEST 8
+#define ZT_ICMP_ROUTER_ADVERTISEMENT 9
+#define ZT_ICMP_ROUTER_SOLICITATION 10
+#define ZT_ICMP_TIME_EXCEEDED 11
+#define ZT_ICMP_BAD_IP_HEADER 12
+#define ZT_ICMP_TIMESTAMP 13
+#define ZT_ICMP_TIMESTAMP_REPLY 14
+#define ZT_ICMP_INFORMATION_REQUEST 15
+#define ZT_ICMP_INFORMATION_REPLY 16
+#define ZT_ICMP_ADDRESS_MASK_REQUEST 17
+#define ZT_ICMP_ADDRESS_MASK_REPLY 18
+#define ZT_ICMP_TRACEROUTE 30
+#define ZT_ICMP_MOBILE_HOST_REDIRECT 32
+#define ZT_ICMP_MOBILE_REGISTRATION_REQUEST 35
+#define ZT_ICMP_MOBILE_REGISTRATION_REPLY 36
+
+/* IPv6 ICMP types */
+#define ZT_ICMP6_DESTINATION_UNREACHABLE 1
+#define ZT_ICMP6_PACKET_TOO_BIG 2
+#define ZT_ICMP6_TIME_EXCEEDED 3
+#define ZT_ICMP6_PARAMETER_PROBLEM 4
+#define ZT_ICMP6_ECHO_REQUEST 128
+#define ZT_ICMP6_ECHO_REPLY 129
+#define ZT_ICMP6_MULTICAST_LISTENER_QUERY 130
+#define ZT_ICMP6_MULTICAST_LISTENER_REPORT 131
+#define ZT_ICMP6_MULTICAST_LISTENER_DONE 132
+#define ZT_ICMP6_ROUTER_SOLICITATION 133
+#define ZT_ICMP6_ROUTER_ADVERTISEMENT 134
+#define ZT_ICMP6_NEIGHBOR_SOLICITATION 135
+#define ZT_ICMP6_NEIGHBOR_ADVERTISEMENT 136
+#define ZT_ICMP6_REDIRECT_MESSAGE 137
+#define ZT_ICMP6_ROUTER_RENUMBERING 138
+#define ZT_ICMP6_NODE_INFORMATION_QUERY 139
+#define ZT_ICMP6_NODE_INFORMATION_RESPONSE 140
+#define ZT_ICMP6_INV_NEIGHBOR_SOLICITATION 141
+#define ZT_ICMP6_INV_NEIGHBOR_ADVERTISEMENT 142
+#define ZT_ICMP6_MLDV2 143
+#define ZT_ICMP6_HOME_AGENT_ADDRESS_DISCOVERY_REQUEST 144
+#define ZT_ICMP6_HOME_AGENT_ADDRESS_DISCOVERY_REPLY 145
+#define ZT_ICMP6_MOBILE_PREFIX_SOLICITATION 146
+#define ZT_ICMP6_MOBILE_PREFIX_ADVERTISEMENT 147
+#define ZT_ICMP6_CERTIFICATION_PATH_SOLICITATION 148
+#define ZT_ICMP6_CERTIFICATION_PATH_ADVERTISEMENT 149
+#define ZT_ICMP6_MULTICAST_ROUTER_ADVERTISEMENT 151
+#define ZT_ICMP6_MULTICAST_ROUTER_SOLICITATION 152
+#define ZT_ICMP6_MULTICAST_ROUTER_TERMINATION 153
+#define ZT_ICMP6_RPL_CONTROL_MESSAGE 155
+
+namespace ZeroTier {
+
+class RuntimeEnvironment;
+
+/**
+ * A simple Ethernet frame level filter
+ *
+ * This doesn't specify actions, since it's used as a deny filter. The rule
+ * in ZT1 is "that which is not explicitly prohibited is allowed." (Except for
+ * ethertypes, which are handled by a whitelist.)
+ */
+class Filter
+{
+public:
+	/**
+	 * Value returned by etherTypeName, etc. on unknown
+	 *
+	 * These static methods return precisely this, so a pointer equality
+	 * check will work.
+	 */
+	static const char *const UNKNOWN_NAME;
+
+	/**
+	 * An empty range as a more idiomatic way of specifying a wildcard match
+	 */
+	static const Range<unsigned int> ANY;
+
+	/**
+	 * A filter rule
+	 */
+	class Rule
+	{
+	public:
+		Rule()
+			throw() :
+			_etherType(),
+			_protocol(),
+			_port()
+		{
+		}
+
+		/**
+		 * Construct a rule from a string-serialized value
+		 *
+		 * @param s String formatted rule, such as returned by toString()
+		 * @throws std::invalid_argument String formatted rule is not valid
+		 */
+		Rule(const char *s)
+			throw(std::invalid_argument);
+
+		/**
+		 * Construct a new rule
+		 *
+		 * @param etype Ethernet type or empty range for ANY
+		 * @param prot Protocol or empty range for ANY (meaning depends on ethertype, e.g. IP protocol numbers)
+		 * @param prt Port or empty range for ANY (only applies to some protocols)
+		 */
+		Rule(const Range<unsigned int> &etype,const Range<unsigned int> &prot,const Range<unsigned int> &prt)
+			throw() :
+			_etherType(etype),
+			_protocol(prot),
+			_port(prt)
+		{
+		}
+
+		inline const Range<unsigned int> &etherType() const throw() { return _etherType; }
+		inline const Range<unsigned int> &protocol() const throw() { return _protocol; }
+		inline const Range<unsigned int> &port() const throw() { return _port; }
+
+		/**
+		 * Test this rule against a frame
+		 *
+		 * @param etype Type of ethernet frame
+		 * @param data Ethernet frame data
+		 * @param len Length of ethernet frame
+		 * @return True if rule matches
+		 * @throws std::invalid_argument Frame invalid or not parseable
+		 */
+		bool operator()(unsigned int etype,const void *data,unsigned int len) const
+			throw(std::invalid_argument);
+
+		/**
+		 * Serialize rule as string
+		 *
+		 * @return Human readable representation of rule
+		 */
+		std::string toString() const;
+
+		inline bool operator==(const Rule &r) const throw() { return ((_etherType == r._etherType)&&(_protocol == r._protocol)&&(_port == r._port)); }
+		inline bool operator!=(const Rule &r) const throw() { return !(*this == r); }
+		inline bool operator<(const Rule &r) const
+			throw()
+		{
+			if (_etherType < r._etherType)
+				return true;
+			else if (_etherType == r._etherType) {
+				if (_protocol < r._protocol)
+					return true;
+				else if (_protocol == r._protocol) {
+					if (_port < r._port)
+						return true;
+				}
+			}
+			return false;
+		}
+		inline bool operator>(const Rule &r) const throw() { return (r < *this); }
+		inline bool operator<=(const Rule &r) const throw() { return !(r < *this); }
+		inline bool operator>=(const Rule &r) const throw() { return !(*this < r); }
+
+	private:
+		Range<unsigned int> _etherType;
+		Range<unsigned int> _protocol;
+		Range<unsigned int> _port;
+	};
+
+	Filter() {}
+
+	/**
+	 * @param s String-serialized filter representation
+	 */
+	Filter(const char *s)
+		throw(std::invalid_argument);
+
+	/**
+	 * @return Comma-delimited list of string-format rules
+	 */
+	std::string toString() const;
+
+	/**
+	 * Add a rule to this filter
+	 *
+	 * @param r Rule to add to filter
+	 */
+	void add(const Rule &r);
+
+	inline bool operator()(unsigned int etype,const void *data,unsigned int len) const
+		throw(std::invalid_argument)
+	{
+		for(std::vector<Rule>::const_iterator r(_rules.begin());r!=_rules.end();++r) {
+			if ((*r)(etype,data,len))
+				return true;
+		}
+		return false;
+	}
+
+	static const char *etherTypeName(const unsigned int etherType)
+		throw();
+	static const char *ipProtocolName(const unsigned int ipp)
+		throw();
+	static const char *icmpTypeName(const unsigned int icmpType)
+		throw();
+	static const char *icmp6TypeName(const unsigned int icmp6Type)
+		throw();
+
+private:
+	std::vector<Rule> _rules;
+};
+
+} // namespace ZeroTier
+
+#endif

attic/README.md

@@ -0,0 +1,4 @@
+Retired Code and Miscellaneous Junk
+======
+
+This directory is for old code that isn't used but we don't want to lose track of, and for anything else random like debug scripts.

attic/decrypt

@@ -0,0 +1,32 @@
+#!/bin/bash
+
+export PATH=/bin:/usr/bin
+
+if [ ! -e /usr/bin/openssl ]; then
+	echo $0: requires /usr/bin/openssl, please install openssl tools
+	exit 1
+fi
+
+if [ "$#" -lt 1 ]; then
+	echo $0: Usage: $0 '<input>' '[output]'
+	exit 1
+fi
+
+if [ ! -r "$1" ]; then
+	echo $0: $1 does not exist or is not readable.
+	exit 1
+fi
+
+outpath=`echo "$1" | sed 's/[.]aes$//'`
+if [ "$#" -ge 2 ]; then
+	outpath="$2"
+fi
+
+if [ -f "$outpath" ]; then
+	echo $0: $outpath already exists, delete or rename first.
+	exit 1
+fi
+
+openssl aes-256-cbc -d -salt -in "$1" -out "$outpath"
+
+echo $0: wrote "$outpath"

attic/encrypt

@@ -0,0 +1,32 @@
+#!/bin/bash
+
+export PATH=/bin:/usr/bin
+
+if [ ! -e /usr/bin/openssl ]; then
+	echo $0: requires /usr/bin/openssl, please install openssl tools
+	exit 1
+fi
+
+if [ "$#" -lt 1 ]; then
+	echo $0: Usage: $0 '<input>' '[output]'
+	exit 1
+fi
+
+if [ ! -r "$1" ]; then
+	echo $0: $1 does not exist or is not readable.
+	exit 1
+fi
+
+outpath="$1.aes"
+if [ "$#" -ge 2 ]; then
+	outpath="$2"
+fi
+
+if [ -f "$outpath" ]; then
+	echo $0: $outpath already exists, delete or rename first.
+	exit 1
+fi
+
+openssl aes-256-cbc -salt -in "$1" -out "$outpath"
+
+echo $0: wrote "$outpath"