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438 Commits

Author SHA1 Message Date
Erik Ekman 7a117bd71e IPv6 support for DNS traffic in server 
Server will by default listen on both IPv4 and IPv6.
No way to only listen on one protocol right now.

Use -L to only listen on a specific v6 address.

IP address to use for raw mode is still IPv4 only.
Use -n on server to make raw mode work from IPv6 clients,
then they will get an IPv4 address from the server for raw mode.

Tunnel data is still IPv4.
 2015-06-28 20:01:48 +02:00
Erik Ekman 07c2fd4068 Prepare server code for IPv6 listening socket 
Add a struct with multiple dns file descriptors (for IPv4 and IPv6)
and pass this to required areas. Choose which descriptor to use when
sending by looking at the destination address family.
 2015-06-28 13:05:17 +02:00
Erik Ekman 582a818f2a Switch external IP service to api.ipify.org 
externalip.net seems to have gone away
 2015-06-27 12:11:43 +02:00
Erik Ekman 778d29825d Switch to IPv6-ready storage of user IP address 2015-06-27 11:57:39 +02:00
Erik Ekman 9e105d21d4 Add explanation for tun packet headers 2015-04-08 08:42:05 +02:00
Catalin Patulea b38b2ca7c5 Clarify that header is for both OPENBSD and DARWIN(utun). 2015-04-08 01:40:19 -04:00
Catalin Patulea 33abc0ca26 Support utun devices on Mac OS X. 
As of 10.6, OS X has native tunnel devices. They are implemented as
sockets rather than character devices, but otherwise they appear to
behave the same as Free/OpenBSD tunnels.

'-d utunX' will tell iodine to use a utun device. For backward
compatibility, we'll continue to default to the old tuntap devices for
now.

This is a port of Peter Sagerson <psagers.github@ignorare.net>'s openvpn
commit 43e5016a.
 2015-03-14 17:02:08 -04:00
gregor herrmann 1160649794 fix compilation error on kFreeBSD and Hurd 2015-01-23 09:50:41 +01:00
Ryan Welton 434a023afe Fix warning for comparing enum 
CC user.c
user.c:202:15: warning: comparison of unsigned
      enum expression < 0 is always false
      [-Wtautological-compare]
        if (c < 0 || c >= CONN_MAX)
            ~ ^ ~
 2014-10-25 10:27:01 +02:00
Erik Ekman 9a45c4aa66 Change license wording to follow ISC license exactly 
"Permission to use, copy, modify, and distribute this software" is now
"Permission to use, copy, modify, and/or distribute this software".

Add license header to source files missing one.
 2014-08-07 21:18:33 +02:00
Erik Ekman 7433423836 Remove redundant strerror() in warn() calls 2014-08-07 20:03:46 +02:00
Barak A. Pearlmutter 46532539c2 Rename VERSION define 
prep for autotools: autoconf defines VERSION so s/VERSION/PROTOCOL_VERSION/
 2014-08-07 12:55:59 +02:00
Jason A. Donenfeld cc4bc22447 osflags: use pkg-config for systemd support 
Recent versions of systemd don't ship with libsystemd-daemon.so anymore,
but instead use libsystemd.so for everything. This is obviously
problematic for using the same LDFLAGS on old systemd and new systemd.
So, they also ship compatability pkgconfig files, which use the old
names but return the new library. So, the most portable way to support
both old and new systemd is to use pkgconfig. It's not a problem either,
since systems that use systemd are bound to also have pkgconfig
installed.
 2014-07-25 02:02:48 +02:00
Erik Ekman eec0a868d9 Set correct sockaddr length when sending 
Fix EINVAL error on NetBSD
 2014-06-16 22:28:04 +02:00
Erik Ekman b715be5cf3 Fix authentication bypass bug 
The client could bypass the password check by continuing after getting error
from the server and guessing the network parameters. The server would still
accept the rest of the setup and also network traffic.

Add checks for normal and raw mode that user has authenticated before allowing
any other communication.

Problem found by Oscar Reparaz.
 2014-06-16 21:43:22 +02:00
Erik Ekman bf658b0c59 Misc cleanup of tun.c 
- Make variables static
- open_tun(): First Linux code, then Windows, then BSDs
- write_tun()/read_tun(): Split Windows and normal code
 2014-06-11 21:04:22 +02:00
Erik Ekman 3ebcd29b13 Add support for using an unspecified RR type 
Add PRIVATE query type with id 65399 (private use range).
According to RFC3597 the reply data in a query with unspecified RR type must be handled
as unstructured binary data, which means it can contain raw packet data just like the NULL type.
Since the reply format is optimal it is ordered just after NULL in the priority order.
 2014-06-09 20:06:36 +02:00
Erik Ekman 2466cd184a Change readshort() to work with unsigned values 2014-06-09 19:47:44 +02:00
Erik Ekman 1f4b9250cf Check that supplied query type is valid 2014-06-09 18:56:32 +02:00
Erik Ekman 4d7678dc5b Prefix exported functions from client.c 2014-06-09 18:11:16 +02:00
Erik Ekman fbb5a49cf3 Fix windows build 2014-06-05 02:19:57 +02:00
Erik Ekman 3fadbfb580 Do not let sockets be inherited by sub-processes 
Set FD_CLOEXEC flag on tunnel and UDP file descriptors.
Fixes ticket #99, "should not allow UDP socket to be inherited by ifconfig"
 2014-06-04 17:48:43 +09:00
Erik Ekman a23899513d Remove trailing whitespace 2014-06-01 08:46:54 +02:00
Erik Ekman 388afe3845 Update copyright 2014-06-01 08:46:54 +02:00
Erik Ekman 95dedf51db Simplify opening UDP socket in win32 tun reader 2014-05-31 21:22:03 +02:00
Erik Ekman d0fb85e8cf Do not use 53 as source port for DNS/raw traffic. 
For some reason this makes raw traffic get dropped.
 2014-05-31 21:20:04 +02:00
Erik Ekman 5b71224def Fix segfault in windows tun reader thread 
The arguments to open_dns() needs to be updated after API change.
Called with 0, INADDR_ANY used to mean port, IP address but now means
pointer to sockadddr and its length. Thanks to C for not giving any
warnings or errors..
 2014-05-31 19:33:25 +02:00
Erik Ekman 00268bc160 Fix two unused variables for windows build 2014-05-31 10:19:46 +02:00
Erik Ekman 3914d37c99 Move error message generation into topdomain check method 
Change isalpha() to a-z check to avoid locale issues
 2014-05-31 10:07:36 +02:00
Erik Ekman 9bb2323f84 Improve check of topdomain to use 
Add more checks and unit tests
 2014-05-30 00:18:45 +02:00
Erik Ekman bacb69e4f0 Mark usage() method as noreturn to avoid warning on BSD 
Warning from OpenBSD/NetBSD:
  CC iodine.c
  iodine.c: In function 'main':
  iodine.c:141:6: warning: 'nameservaddr_len' may be used uninitialized in this function
 2014-05-29 23:21:55 +02:00
Erik Ekman d6c3426b84 Set C standard to C99 
Also include strings.h where strcasecmp() is used
 2014-05-29 18:38:43 +02:00
Erik Ekman b079b0eda5 Fix build error and a warning on OpenBSD 2014-05-29 16:18:59 +02:00
Barak A. Pearlmutter 88590bcaaf Mixing signed and unsigned quantities in MIN() upset GCC's tender soul. 2014-04-06 13:41:31 +02:00
Barak A. Pearlmutter f73fb9f8d0 rewrite comparison to avoid negative unsigned numbers 
Note that GCC -O2 is happy to optimize away (x<0) when x is an
unsigned quantity.  This was actually occurring in CHECKLEN(0),
causing the compiler to issue a warning.
 2014-04-06 13:41:17 +02:00
Erik Ekman acd6c37ac1 Fix build after rtable patch 2014-04-06 13:35:09 +02:00
Erik Ekman eca80f769b Merge branch 'master' of https://github.com/jedisct1/iodine 2014-04-06 13:31:34 +02:00
Erik Ekman 619ede5da8 Add options to force IP version for client DNS traffic 2014-02-10 22:52:31 +01:00
Erik Ekman 540d3795a9 Switch from inet_pton() to getnameinfo() for portability 
Windows XP is supported again
 2014-02-06 22:50:23 +01:00
Erik Ekman f02339b3b2 IPv6: Create single way to format IP addresses 2014-02-06 19:44:26 +01:00
Erik Ekman 400f45c793 Do not use AI_ADDRCONFIG on Windows 
It was not available on my MinGW crosscompiler,
and it may be harmful:
https://code.google.com/p/chromium/issues/detail?id=5234

Also, remove old conflicting WINVER in osflags.
It is set in src/windows.h now.
 2014-02-05 22:55:35 +01:00
Erik Ekman a1d88c4f0a IPv6 support for client (#107) 
The iodine client now supports both IPv4 and IPv6 nameservers for
sending DNS queries to an IPv4 iodined. The nameserver will
transparently handle translation between IP protocols.

Windows port needs Vista or later to support IPv6.
 2014-02-05 22:36:53 +01:00
Erik Ekman 8baad91156 Make sure buffer is zero-terminated when getting external ip 
Also switch to HTTP 1.0 to avoid chunked transfer coding.
 2014-01-29 23:12:22 +01:00
Erik Ekman 967276f3ba Fix git revision for android 2014-01-29 20:34:00 +01:00
Erik Ekman fb9e930fee Print git revision as version 2014-01-29 20:25:45 +01:00
Erik Ekman 97b5e688ef Fix warning, unused variable 'accepted_fragsize' 2014-01-29 19:33:54 +01:00
Erik Ekman a7f491f808 Fix warning, unused variable 'rtable' 2014-01-29 19:12:46 +01:00
Erik Ekman 4f02f7d0aa Fix warning, unused variable 'encsize' 2014-01-29 19:12:42 +01:00
Erik Ekman 900647fa0c Merge pull request #4 from mscherer/systemd 
Add socket activation for systemd, with a option to stop on idle
 2014-01-29 09:25:00 -08:00
Michael Scherer abd276ed9e Add idle option, so we can stop iodine and start it on demand with systemd 2013-12-23 22:57:50 +01:00
Michael Scherer 27fb4c75cd Add support to have on demand socket activation of iodine 2013-12-23 22:57:40 +01:00
Michael Scherer 64ff684754 Fix gcc warning -Wsizeof-pointer-memaccess 
iodined.c: In function ‘write_dns_nameenc’:
iodined.c:2030:23: attention : argument to ‘sizeof’ in ‘memset’ call is the same
expression as the destination; did you mean to provide an explicit length? [-Wsizeof-pointer-memaccess]
  memset(buf, 0, sizeof(buf));

sizeof buf will just give the size of the pointer, while buflen will clean the whole
memory.
 2013-12-23 18:04:06 +01:00
Frank Denis 28ceecba37 size_t values can't be negative. 2013-05-20 10:40:44 -07:00
Frank Denis 1523a4f035 snprintf() is a macro on some operating systems 
and having #ifdef statements in macro parameters has undefined behavior.
 2013-05-20 10:39:05 -07:00
Frank Denis b31e66343a -R only works on OpenBSD. 2013-05-20 10:31:39 -07:00
Frank Denis 58dac78bd8 Fix NULL pointer deref 2013-05-20 10:30:43 -07:00
Frank Denis 2d90aaaf30 Wipe the whole buffer containing the DNS name, not the size of its pointer 2013-05-20 10:28:25 -07:00
Frank Denis ac7cbd4435 Check set[e]uid return code 2013-05-20 10:27:23 -07:00
Erik Ekman 59dbaf2b50 Merge pull request #1 from zschoche/master 
Bugfix for Mountain Lion
 2013-01-15 00:26:02 -08:00
Jason A. Donenfeld ade78ac8a2 More generic way of finding ifconfig. 2012-09-09 14:02:54 +02:00
Erik Ekman c99f381719 Set WINVER to Windows XP to support getaddrinfo 2012-09-03 10:52:04 +02:00
Erik Ekman 43e4fb5448 Add automatic external IP lookup via '-n auto' 
Leonard Lausen proposed iodined should use externalip.net api
to find external ip. Use -n auto to trigger a lookup.
 2012-09-03 10:34:27 +02:00
Philipp Zschoche e1e438497a after update to OSX 10.8 I've gotten these error: 
route: writing to routing socket: Can't assign requested address
add net 192.168.99.2: gateway 192.168.99.2: Can't assign requested address

This change fix that!
 2012-07-31 22:09:53 +02:00
Erik Ekman b30abea6b0 Reorganize imports for OpenBSD 2012-02-10 23:26:27 +01:00
Erik Ekman 45a5d80c49 Adjust indentation 2012-02-06 20:28:42 +01:00
Erik Ekman 24f1959bab Rename user struct to fix ubuntu arm build failure 2012-02-05 00:49:30 +01:00
Erik Ekman 423cbec41d Added android specific readme file, along with new make targets 
Also updated changelog.
 2012-02-05 00:36:15 +01:00
Pavel Pergamenshchik 85be9b07d1 Missing break in iodine.c command-line parsing 
Bug-Ubuntu: https://bugs.launchpad.net/bugs/880508
Author: Pavel Pergamenshchik <ppergame@gmail.com>
Reviewed-by: gregor herrmann <gregoa@debian.org>
Last-Update: 2011-10-23
 2012-02-04 22:38:27 +01:00
Marcel Bokhorst a569030bb7 Android support (#105) patch from Marcel Bokhorst 2012-02-04 20:34:05 +01:00
Erik Ekman 66d9428dff Add check for SO_RTABLE support in openbsd, #95 2012-02-04 20:34:05 +01:00
Laurent Ghigonis d4849a5dbf Add support for openbsd routing domain, #95 2012-02-04 20:34:05 +01:00
Håkan Kvist 9c3343e6ac Allow spaces in passwords, #93 2012-02-04 20:34:05 +01:00
Erik Ekman 0a968a5144 Initialize 'inside_topdomain'. Fixes #94 2012-02-04 20:34:05 +01:00
Erik Ekman 0be4332193 Fix things mentioned in #91 2012-02-04 20:34:05 +01:00
Erik Ekman b22e3da5a0 #89, use remote ip as second ip in ifconfig on FreeBSD 2012-02-04 20:34:05 +01:00
Erik Ekman 465cfe54a3 Fix build error on windows 2012-02-04 20:34:04 +01:00
jsbid1 7ae8d04955 Fix #86, patch from jsbid1 gmail.com 2012-02-04 20:34:04 +01:00
Erik Ekman 6e2cf70587 Fix osx compile, maybe also OpenBSD 2012-02-04 20:34:04 +01:00
Erik Ekman 79f0092c70 Fix compile for win32 2012-02-04 20:34:04 +01:00
J. A. Bezemer b177901d38 Applied patch from #88, thanks a lot! 2012-02-04 20:34:04 +01:00
Erik Ekman 1a26a91db3 #82, switch to gethostbyname() for win32 support 2012-02-04 20:34:04 +01:00
Erik Ekman c5bdf07070 #82 update docs 2012-02-04 20:34:04 +01:00
Erik Ekman 365aab1d29 #82, fix resolving given nameserver on everything but win32 2012-02-04 20:34:04 +01:00
Erik Ekman acd264b435 Make sure replies with errors get the name parsed 2012-02-04 20:34:04 +01:00
Erik Ekman 269499ba43 Print DNS errors only when requested packet has an error 2012-02-04 20:34:04 +01:00
Erik Ekman 326da432c9 Fix buggy set lazy mode function 2012-02-04 20:34:04 +01:00
J. A. Bezemer 3c48602747 merge client code #76 2012-02-04 20:34:04 +01:00
J. A. Bezemer d87432ec18 merge server code #76 2012-02-04 20:34:04 +01:00
J. A. Bezemer 60dfbf1b34 merge dns and user #76 2012-02-04 20:34:04 +01:00
J. A. Bezemer 05e99c7a3f start merging common and docs #76 2012-02-04 20:34:04 +01:00
Erik Ekman 92b160a416 Fix mtu fragment size probing 2012-02-04 20:34:04 +01:00
Erik Ekman 5951166b36 Fix data length in encoding dns queries 2012-02-04 20:34:04 +01:00
Erik Ekman d4d88d2ad0 Remove arg to inline_dotify 2012-02-04 20:34:04 +01:00
J. A. Bezemer 40167437d3 update server code #75 2012-02-04 20:34:04 +01:00
J. A. Bezemer 55cfed9956 update client code #75 2012-02-04 20:34:03 +01:00
J. A. Bezemer 2c2dd6f06e update client code #75 2012-02-04 20:34:03 +01:00
J. A. Bezemer 90e25e3a2c update dns parsing #75 2012-02-04 20:34:03 +01:00
J. A. Bezemer c2bc500cba add downenc per-user field #75 2012-02-04 20:34:03 +01:00
J. A. Bezemer 1fcab767cd Add win32 defines for TXT and SRV #75 2012-02-04 20:34:03 +01:00
J. A. Bezemer 05a23a544d add win32 defines #75 2012-02-04 20:34:03 +01:00