This surprising breakage results from the fact that Linux basically uses
a different structure from the *BSD:
For exmaple, macOS has:
struct sockaddr_in {
__uint8_t sin_len;
sa_family_t sin_family;
in_port_t sin_port;
struct in_addr sin_addr;
char sin_zero[8];
};
with sa_family_t also uint8_t
and Linux has stupidly complex definition that boils down to:
struct sockaddr_in
{
uint16_t sin_family;
in_port_t sin_port;
struct in_addr sin_addr
char sin_zero[8];
};
So Linux basically has a 16 bit uint16 instead of two uint8_t. Because
s390x is big endian, this happens to be same in memory layout as on all
BSDs with first byte being 0 and second byte being the family.
Introduce a second array to check against, if we are on little endian
Linux.
This is a bit fragile but this is also just a unit test.
This also fixes compiling test_pkt with windows.
Signed-off-by: Arne Schwabe <arne@rfc2549.org>
Acked-by: Gert Doering <gert@greenie.muc.de>
Message-Id: <20221207140259.1083577-1-arne@rfc2549.org>
URL: https://www.mail-archive.com/openvpn-devel@lists.sourceforge.net/msg25633.html
Signed-off-by: Gert Doering <gert@greenie.muc.de>
We accidentially checked the adress family size instead of the address
family.
For unit test checks we need to consider endianess to ensure the hmac
for the adress is always the same. The real code does not care about
endian since it only needs it to be same on the same architecture.
Converting the session to endianess is strictly speaking unecessary
for the actual function of the function but is almost no overhead
and makes the unit testing more robust.
Reported by David trying to the package on Red Hat/s390x and painfully
debugged by setting up a s390x qemu machine that takes 40s just to
run ./configure.
Signed-off-by: Arne Schwabe <arne@rfc2549.org>
Acked-by: Gert Doering <gert@greenie.muc.de>
Message-Id: <20221206133647.954724-1-arne@rfc2549.org>
URL: https://www.mail-archive.com/openvpn-devel@lists.sourceforge.net/msg25619.html
Signed-off-by: Gert Doering <gert@greenie.muc.de>
This adds an MRU cache for the last seen packets from the peer to send acks
to all recently recently packets. This allows packets to be acknowledged
even if a single P_ACK_V1 gets lost, avoiding retransmissions. The downside
is that we add up to 28 byte to an P_ACK_V1 (7* packet_id) and up to 24
bytes to other control channel packets (4* packet_id + peer session id).
However these small increases in packet size are a small price to pay for
increased reliability.
Currently OpenVPN will only send the absolute minimum of ACK messages. A
single lost ACK message will trigger a resend from the peer and another
ACK message.
Patch v2: fix multiple typos/grammar. Change lru to mru (this is really an
MRU cache), add more unit test cases
Signed-off-by: Arne Schwabe <arne@rfc2549.org>
Acked-by: Frank Lichtenheld <frank@lichtenheld.com>
Message-Id: <20220831134140.913337-1-arne@rfc2549.org>
URL: https://www.mail-archive.com/openvpn-devel@lists.sourceforge.net/msg25143.html
Signed-off-by: Gert Doering <gert@greenie.muc.de>
Doesn't make sense to test with fragment, if the code
ignores it.
Signed-off-by: Frank Lichtenheld <frank@lichtenheld.com>
Acked-by: Arne Schwabe <arne@rfc2549.org>
Message-Id: <20220624122657.28675-1-frank@lichtenheld.com>
URL: https://www.mail-archive.com/openvpn-devel@lists.sourceforge.net/msg24550.html
Signed-off-by: Gert Doering <gert@greenie.muc.de>
Currently the life time of the auth-token is tied to the renegotiation
time. While this is fine for many setups, some setups prefer a user
to be no longer authenticated when the user disconnects from the VPN
for a certain amount of time.
This commit allows to shorten the renewal time of the auth-token and
ensures that the server resends the auth-token often enough over the
existing control channel. This way of updating the auth token is a lot
more lightweight than the alternative (frequent renegotiations).
Patch v2: fix grammar mistakes (thanks Gert), fix unit tests
Signed-off-by: Arne Schwabe <arne@rfc2549.org>
Acked-by: Gert Doering <gert@greenie.muc.de>
Message-Id: <20221017095145.2580186-1-arne@rfc2549.org>
URL: https://www.mail-archive.com/openvpn-devel@lists.sourceforge.net/msg25407.html
Signed-off-by: Gert Doering <gert@greenie.muc.de>
Make sure cipher_valid only considers these four operations as valid.
This fixes that something like --data-ciphers AES-256-GCM:AES-128-CCM
will start but later fail when trying to use the CCM cipher.
We say "a supported AEAD" mode in our error since CCM is also an AEAD mode
but one we don't support, unlike GCM.
Patch v2: add the indication if the cipher was optional into the message
Signed-off-by: Arne Schwabe <arne@rfc2549.org>
Acked-by: Frank Lichtenheld <frank@lichtenheld.com>
Message-Id: <20221010155515.1687151-1-arne@rfc2549.org>
URL: https://www.mail-archive.com/openvpn-devel@lists.sourceforge.net/msg25379.html
Signed-off-by: Gert Doering <gert@greenie.muc.de>
Introduce V=<nn> levels to t_lpback.sh self test
V=0 - do not print any output at all
V=1 - print intro line, summary at end, and "FAIL"+Log for failing tests
V=99 - print everything + summary
code-wise, introduce test_start() / test_end() functions which do
the $? check as well, so the actual testing code is streamlined.
v2:
replace indent tabs with spaces
change [ $V == 1 ] expression to [ $V = 1 ] (POSIXly correct)
Signed-off-by: Gert Doering <gert@greenie.muc.de>
Acked-by: Frank Lichtenheld <frank@lichtenheld.com>
Message-Id: <20221004131403.95597-1-gert@greenie.muc.de>
URL: https://www.mail-archive.com/openvpn-devel@lists.sourceforge.net/msg25332.html
Signed-off-by: Gert Doering <gert@greenie.muc.de>
If t_client.sh is run interactively, more verbose output is useful
to quickly see what it is doing. If run from a CI environment, going
through lots of output for successful tests just to find the one that
failed is non-useful.
Introduce V=<n> environment variable to control output verbosity
V=0 - do not print any per-test output at all, just overall summary
V=1 - print single header line for each successful test
print full output for failing tests
V=99 - print full output, always, as before
default is V=1 now
Signed-off-by: Gert Doering <gert@greenie.muc.de>
v2:
fix erroneous test on "-n"
do not accumulate extra "\n" in outbuf (V=1)
fix missing "-e" at "test failures. FAIL." message
fix missing "\n" when including "diff" output
fix missing "-n" when printing outbuf (= extra newline)
(and more newlines being shuffled around)
v3:
fix quoting on inclusion of "ifconfig/route diff", with newlines...
Acked-by: Frank Lichtenheld <frank@lichtenheld.com>
Acked-by: Antonio Quartulli <a@unstable.cc>
Message-Id: <20220920132351.27718-1-gert@greenie.muc.de>
URL: https://www.mail-archive.com/openvpn-devel@lists.sourceforge.net/msg25285.html
Signed-off-by: Gert Doering <gert@greenie.muc.de>
In addition to global FPING_EXTRA_ARGS now also evaluate
FPING_ARGGS_<suffix>.
This can be used, for example, for a test instance for "will ToS-tagged
packets be sent properly?" by setting FPING_ARGS_2="-O 0x10".
Signed-off-by: Gert Doering <gert@greenie.muc.de>
Acked-by: Frank Lichtenheld <frank@lichtenheld.com>
Message-Id: <20220926081158.40640-1-gert@greenie.muc.de>
URL: https://www.mail-archive.com/openvpn-devel@lists.sourceforge.net/msg25315.html
Signed-off-by: Gert Doering <gert@greenie.muc.de>
This allows a server to indicate a temporary problem on the server and
allows the server to indicate how to proceed (i.e. move to the next server,
retry the same server, wait a certain time,...)
This adds options_utils.c/h to be able to unit test the new function.
Patch v2: Improve documentation, format man page better, comment that
protocol-flags is not a user usable option.
Patch v3: cleanup parse_auth_failed_temp to use a simple const string
instead of a buffer
Patch v4: move message + strlen(TEMP) to caller
Signed-off-by: Arne Schwabe <arne@rfc2549.org>
Acked-by: Heiko Hund <heiko@ist.eigentlich.net>
Message-Id: <20220914170134.2659433-1-arne@rfc2549.org>
URL: https://www.mail-archive.com/openvpn-devel@lists.sourceforge.net/msg25210.html
Signed-off-by: Gert Doering <gert@greenie.muc.de>
Error: test_provider.c(74): error C2099: initializer is not a constant
Fix this issue by making the const char* to const char[]. This is probably
of one the weird array decay corner cases
I could not find another/better way around this issue.
This error only occurs when building unit tests with windows which our
normal build system does not do but my out of tree cmake build script
tries and fails.
Signed-off-by: Arne Schwabe <arne@rfc2549.org>
Acked-by: Frank Lichtenheld <frank@lichtenheld.com>
Message-Id: <20220824165718.102002-1-arne@rfc2549.org>
URL: https://www.mail-archive.com/openvpn-devel@lists.sourceforge.net/msg25102.html
Signed-off-by: Gert Doering <gert@greenie.muc.de>
fping and fping6 were merged in version 4.0,
released in 2017. Many recent distributions do
not include the compatibility symlink anymore.
So if we find fping but not fping6 do not error
out but assume that fping is capable of IPv6.
Signed-off-by: Frank Lichtenheld <frank@lichtenheld.com>
Acked-by: Antonio Quartulli <a@unstable.cc>
Message-Id: <20220822141806.39406-1-frank@lichtenheld.com>
URL: https://www.mail-archive.com/openvpn-devel@lists.sourceforge.net/msg25058.html
Signed-off-by: Gert Doering <gert@greenie.muc.de>
v2: also fix building test_provider
- ifdefs in test_provider.c
- include integer.h for min_int as manage.h
may not always pull it in
Too many ifdefs, unfortunately..
Signed-off-by: Selva Nair <selva.nair@gmail.com>
Acked-by: Frank Lichtenheld <frank@lichtenheld.com>
Message-Id: <20220727221830.31861-1-selva.nair@gmail.com>
URL: https://www.mail-archive.com/openvpn-devel@lists.sourceforge.net/msg24749.html
Signed-off-by: Gert Doering <gert@greenie.muc.de>
In automated tests we want the build to fail if the
worker node is configured incorrectly.
Signed-off-by: Frank Lichtenheld <frank@lichtenheld.com>
Acked-by: Gert Doering <gert@greenie.muc.de>
Message-Id: <20220722134902.22092-1-frank@lichtenheld.com>
URL: https://www.mail-archive.com/openvpn-devel@lists.sourceforge.net/msg24723.html
Signed-off-by: Gert Doering <gert@greenie.muc.de>
This new API can be used to retrieve the type of a specific interface.
It's mostly platform dependant, but right now expected values are
"ovpn-dco", "tun" or "tap".
Other values are possible too, but they are not of interest to us.
This commit also extends the networking unit-test by using the newly
introduced API in conjunction with iface_new and iface_del.
The t_net.sh script has been slightly adapted to allow running these
tests in standalone (as they don't require any iproute2 counterpart).
Signed-off-by: Antonio Quartulli <a@unstable.cc>
Acked-by: Gert Doering <gert@greenie.muc.de>
Message-Id: <20220713124332.16147-1-a@unstable.cc>
URL: https://www.mail-archive.com/openvpn-devel@lists.sourceforge.net/msg24688.html
Signed-off-by: Gert Doering <gert@greenie.muc.de>
OpenSSL's implementation of ED448 and ED25519 has a few idiosyncrasies.
Instead of belonging to the elliptic curve type or to a common Edwards
curve type, ED448 and ED25519 have each their own type.
Also, OpenSSL expects signatures using these curves to be done with the
EVP_DigestSign API instead of the EVP_Sign API but using md=NULL.
This has been tested using a "fake" external key that used a normal
software key instead of a hardware implementation but that makes no
difference from the perspective of xkey_provider/management interface.
Patch v2: remove name functions from ed448/ed25519, ensure md is NULL
for ed448/ed25519 and handle NULL/none better in general.
Patch v3: do not pass NULL as string for the OSSL params.
Signed-off-by: Arne Schwabe <arne@rfc2549.org>
Acked-by: Selva Nair <selva.nair@gmail.com>
Message-Id: <20220516104807.2568937-1-arne@rfc2549.org>
URL: https://www.mail-archive.com/openvpn-devel@lists.sourceforge.net/msg24363.html
Signed-off-by: Gert Doering <gert@greenie.muc.de>
It is our usual style.
Signed-off-by: Frank Lichtenheld <frank@lichtenheld.com>
Acked-by: Antonio Quartulli <a@unstable.cc>
Message-Id: <20220519085428.6783-2-frank@lichtenheld.com>
URL: https://www.mail-archive.com/openvpn-devel@lists.sourceforge.net/msg24399.html
Signed-off-by: Gert Doering <gert@greenie.muc.de>
Tls-crypt v2 is more complicated to implement a proper stateless
handshake. To allow state handshake this commit does
- introduce a new packet CONTROL_WKC_V1 that repeats the wrapped
client key.
- introduce a way to negotiate the support for this packet in the
three way handshake
Details about the protocol changes are in tls-crypt-v2.txt. Optional
arguments to the tls-crypt-v2 option have been added to explicitly
allow or disallow client that do not support the stateless handshake.
Signed-off-by: Arne Schwabe <arne@rfc2549.org>
Patch v3: improve grammar, style, comments, fix unit tests
Patch v4: remove explicit flag for ability to resend WKc,
clean up comments, improve code style in some instances
Acked-by: Antonio Quartulli <antonio@openvpn.net>
Message-Id: <20220505130348.1183195-1-arne@rfc2549.org>
URL: https://www.mail-archive.com/openvpn-devel@lists.sourceforge.net/msg24287.html
Signed-off-by: Gert Doering <gert@greenie.muc.de>
OpenVPN currently has a bit of a weakness in its early three way handshake
A single client reset packet (first packet of the handshake) will
- trigger creating a session on the server side leading to potential
ressource exhaustion
- make the server respond with 3 answers trying to get an ACK for its
P_CONTROL_HARD_RESET_SERVER_V2 answer making it an amplification
Instead of allocating a connection for each client on the initial packet
OpenVPN will now calculate a session id based on a HMAC that serves as
verifiable cookie that can be checked for authenticity when the client
responds with it. This eliminates the amplification attack and resource
exhaustion attacks.
For tls-crypt-v2 clients the HMAC based handshake is not used yet (will
be added in one of the next patches).
Patch v2: rebase on master
patch v3: fix unit tests, improve comment/style of code
Signed-off-by: Arne Schwabe <arne@rfc2549.org>
Acked-by: Frank Lichtenheld <frank@lichtenheld.com>
Message-Id: <20220502154310.836947-1-arne@rfc2549.org>
URL: https://www.mail-archive.com/openvpn-devel@lists.sourceforge.net/msg24262.html
Signed-off-by: Gert Doering <gert@greenie.muc.de>
This implements creating a reset packet without needing to setup
a full control session.
Patch v2: fix unit test not working without further commits
Signed-off-by: Arne Schwabe <arne@rfc2549.org>
Acked-by: Gert Doering <gert@greenie.muc.de>
Message-Id: <20220427223419.241904-1-arne@rfc2549.org>
URL: https://www.mail-archive.com/openvpn-devel@lists.sourceforge.net/msg24240.html
Signed-off-by: Gert Doering <gert@greenie.muc.de>
This tests currently the existing functionality of test_tls_decrypt_lite
to check if a reset packet is valid or not.
Signed-off-by: Arne Schwabe <arne@rfc2549.org>
Acked-by: Gert Doering <gert@greenie.muc.de>
Message-Id: <20220422134038.3801239-8-arne@rfc2549.org>
URL: https://www.mail-archive.com/openvpn-devel@lists.sourceforge.net/msg24168.html
Signed-off-by: Gert Doering <gert@greenie.muc.de>
It was agreed it was time to do a full reformat fix-up of the whole
source tree again. Over time (since late 2016) small changes has not
adhered to our uncrustify defined coding style. This realigns to our
current standards.
Signed-off-by: David Sommerseth <davids@openvpn.net>
Acked-by: Gert Doering <gert@greenie.muc.de>
Message-Id: <20220420143050.52790-1-openvpn@sf.lists.topphemmelig.net>
URL: https://www.mail-archive.com/openvpn-devel@lists.sourceforge.net/msg24123.html
Signed-off-by: Gert Doering <gert@greenie.muc.de>
A dummy interface cannot be deleted using --rmtun because openvpn tries
to send some ioctl (i.e. TUNSETPERSIST) which is not supported by this
device type. This results in the following error:
2022-04-07 09:59:29 Cannot ioctl TUNSETPERSIST(0) ovpn-dummy0: Bad file
descriptor (errno=9)
2022-04-07 09:59:29 Exiting due to fatal error
and the interface is not deleted.
Use iproute to generically delete an interface.
Signed-off-by: Antonio Quartulli <a@unstable.cc>
Acked-by: Gert Doering <gert@greenie.muc.de>
Message-Id: <20220407081555.25228-1-a@unstable.cc>
URL: https://www.mail-archive.com/openvpn-devel@lists.sourceforge.net/msg24086.html
Signed-off-by: Gert Doering <gert@greenie.muc.de>
These two new methods can be used to create and delete a tun or an
ovpn-dco interface via networking API.
Implementations for SITNL and iproute2 are provided
Signed-off-by: Arne Schwabe <arne@rfc2549.org>
Signed-off-by: Antonio Quartulli <a@unstable.cc>
Acked-by: Gert Doering <gert@greenie.muc.de>
Message-Id: <20220407094146.7684-1-a@unstable.cc>
URL: https://www.mail-archive.com/openvpn-devel@lists.sourceforge.net/msg24088.html
Signed-off-by: Gert Doering <gert@greenie.muc.de>
Instead relying on the link_mtu_dynamic field and its calculation
in the frame struct, add a new field max_fragment_size and add
a calculation of it similar to mssfix.
Also whenever mssfix value is calculated, we also want to calculate
the values for fragment as both options need to be calculated from
the real overhead.
Patch v2: Fix syntax in rst man page
Patch v5: fix segfault when get_ip_encap_overhead gets called early in
init_instance and note that these calls will always be
overwritten by NCP in tls_session_update_crypto_params
Signed-off-by: Arne Schwabe <arne@rfc2549.org>
Acked-by: Gert Doering <gert@greenie.muc.de>
Message-Id: <20220212003331.3483107-1-arne@rfc2549.org>
URL: https://www.mail-archive.com/openvpn-devel@lists.sourceforge.net/msg23764.html
Signed-off-by: Gert Doering <gert@greenie.muc.de>
The current mssfix parameter is a bit difficult to use as it needs
manual calculation of the allowable packet size and also the resulting
MSS value does not take into account if IPv4 or IPv6 is used on the
outer tunnel. Add 'mtu' parameter to fix both of these problem by
dynamically including the real overhead.
The syntax and naming of the parameter is chosen for compatiblity with
OpenVPN3.
Patch V2: document mssfix 0 disabling mssfix, fix rst syntax
Signed-off-by: Arne Schwabe <arne@rfc2549.org>
Acked-by: Gert Doering <gert@greenie.muc.de>
Message-Id: <20220101162532.2251835-6-arne@rfc2549.org>
URL: https://www.mail-archive.com/openvpn-devel@lists.sourceforge.net/msg23495.html
Signed-off-by: Gert Doering <gert@greenie.muc.de>
This commit fixes the MSS calculation in CBC mode. This fix has two parts:
- Added rounding to a multiple of block size during calculation of overhead
- In CBC mode the packet ID is part of the plaintext (or payload) rather
than part of the header (like for AEAD), adjust the functions to
correctly reflect this.
OCC link calculation is not affected since it ignores rounding of CBC
block size completely.
Signed-off-by: Arne Schwabe <arne@rfc2549.org>
Acked-by: Gert Doering <gert@greenie.muc.de>
Message-Id: <20220101162532.2251835-3-arne@rfc2549.org>
URL: https://www.mail-archive.com/openvpn-devel@lists.sourceforge.net/msg23494.html
Signed-off-by: Gert Doering <gert@greenie.muc.de>
Update performed by means of: dev-tools/update-copyright.sh
Cc: David Sommerseth <davids@openvpn.net>
Signed-off-by: Antonio Quartulli <a@unstable.cc>
Acked-by: David Sommerseth <davids@openvpn.net>
Message-Id: <20220125142456.18176-1-a@unstable.cc>
URL: https://www.mail-archive.com/openvpn-devel@lists.sourceforge.net/msg23650.html
Signed-off-by: Gert Doering <gert@greenie.muc.de>
This unit-test did not consider the case when USE_COMP is not defined,
thus generating a compiler error.
Adapt the test to the case when no compression is available.
Cc: Arne Schwabe <arne@rfc2549.org>
Signed-off-by: Antonio Quartulli <a@unstable.cc>
Acked-by: Gert Doering <gert@greenie.muc.de>
Message-Id: <20220121144313.24961-1-a@unstable.cc>
URL: https://www.mail-archive.com/openvpn-devel@lists.sourceforge.net/msg23628.html
Signed-off-by: Gert Doering <gert@greenie.muc.de>
Tests:
- Check SIGNATURE and KEYMGMT methods can be fetched
from the provider
- Load sample RSA and EC keys as management-external-key
and check that their sign callbacks are correctly exercised:
with and without digest support mocked in the client
capability flag.
-Test generic key load and signature
v4: 16/18 and 17/18 of v3 squashed into one patch
Signed-off-by: Selva Nair <selva.nair@gmail.com>
Acked-by: Arne Schwabe <arne@rfc2549.org>
Message-Id: <20220120161616.13447-1-selva.nair@gmail.com>
URL: https://www.mail-archive.com/openvpn-devel@lists.sourceforge.net/msg23608.html
Signed-off-by: Gert Doering <gert@greenie.muc.de>
Use the functions that directly compute the link mtu instead relying on the
frame logic.
Patch V2: rebase on master
Signed-off-by: Arne Schwabe <arne@rfc2549.org>
Acked-by: Gert Doering <gert@greenie.muc.de>
Message-Id: <20211230172136.2017215-1-arne@rfc2549.org>
URL: https://www.mail-archive.com/search?l=mid&q=20211230172136.2017215-1-arne@rfc2549.org
Signed-off-by: Gert Doering <gert@greenie.muc.de>
As with the removal of cipher_kt_t, this is allows better support of
OpenSSL 3.0 and mbed TLS 3.0
Patch v2: rebase
Signed-off-by: Arne Schwabe <arne@rfc2549.org>
Acked-by: Gert Doering <gert@greenie.muc.de>
Message-Id: <20211213150654.3993358-2-arne@rfc2549.org>
URL: https://www.mail-archive.com/search?l=mid&q=20211213150654.3993358-2-arne@rfc2549.org
Signed-off-by: Gert Doering <gert@greenie.muc.de>
Make the external crypto consumer oblivious to the internal cipher
type that both mbed TLS and OpenSSL use. This change is mainly done
so the cipher type that is used can be stay a const type but instead
of an SSL library type, we now use a simple string to identify a
cipher. This has the disadvantages that we do a cipher lookup every
time a function is called that needs to query properties of a cipher.
But none of these queries are in a critical path.
This patch also fixes the memory leaks introduced by the
EVP_fetch_cipher commit by always freeing the EVP_CIPHER.
This also changes kt->cipher to be always defined with the name of
the cipher. This only affects the "none" cipher cipher which was
previously represented by kt->cipher to be NULL.
Patch v2: rebase on master
Patch v3: fix errors with mbed TLS without having md_kt to const char *
patch also applied, fix logic inversion in tls_crypt_tk
Patch v4: fix issue if cipher does not get changed by NCP that null cipher
is then used
Signed-off-by: Arne Schwabe <arne@rfc2549.org>
Acked-by: Gert Doering <gert@greenie.muc.de>
Message-Id: <20211213150654.3993358-1-arne@rfc2549.org>
URL: https://www.mail-archive.com/search?l=mid&q=20211213150654.3993358-1-arne@rfc2549.org
Signed-off-by: Gert Doering <gert@greenie.muc.de>
The unit test argv_insert_head__empty_argv__head_only was defined
but never used. Add it to the array of unit tests.
Signed-off-by: Arne Schwabe <arne@rfc2549.org>
Acked-by: Gert Doering <gert@greenie.muc.de>
Message-Id: <20211208170614.3404821-1-arne@rfc2549.org>
URL: https://www.mail-archive.com/openvpn-devel@lists.sourceforge.net/msg23359.html
Signed-off-by: Gert Doering <gert@greenie.muc.de>
This argument is never used apart from a unit test. Remove this
argument as a small cleanup.
Signed-off-by: Arne Schwabe <arne@rfc2549.org>
Acked-by: Gert Doering <gert@greenie.muc.de>
Message-Id: <20211207170211.3275837-2-arne@rfc2549.org>
URL: https://www.mail-archive.com/openvpn-devel@lists.sourceforge.net/msg23329.html
Signed-off-by: Gert Doering <gert@greenie.muc.de>
If an optional cipher was found at the end of --data-cipher that was
not available, it would reset the error and allow non optional ciphers
to be ignored.
Signed-off-by: Arne Schwabe <arne@rfc2549.org>
Acked-by: Gert Doering <gert@greenie.muc.de>
Message-Id: <20211206150852.3142891-1-arne@rfc2549.org>
URL: https://www.mail-archive.com/search?l=mid&q=20211206150852.3142891-1-arne@rfc2549.org
Signed-off-by: Gert Doering <gert@greenie.muc.de>
This field is only set once with md_kt_size and then only read. Remove this
field and replace the read accesses with md_kt_size.
Signed-off-by: Arne Schwabe <arne@rfc2549.org>
Acked-by: Gert Doering <gert@greenie.muc.de>
Message-Id: <20211201180727.2496903-6-arne@rfc2549.org>
URL: https://www.mail-archive.com/openvpn-devel@lists.sourceforge.net/msg23274.html
Signed-off-by: Gert Doering <gert@greenie.muc.de>
This allows to use the same configuration multiple platforms/ssl libraries
and include optional algorithms that are not available on all platforms
For example "AES-256-GCM:AES-128-GCM:?CHACHA20-POLY1305" can be used to
emulate the default behaviour of OpenVPN 2.6.
Signed-off-by: Arne Schwabe <arne@rfc2549.org>
Acked-by: Gert Doering <gert@greenie.muc.de>
Message-Id: <20211201180727.2496903-1-arne@rfc2549.org>
URL: https://www.mail-archive.com/openvpn-devel@lists.sourceforge.net/msg23279.html
Signed-off-by: Gert Doering <gert@greenie.muc.de>
Even though DES is super outdated and also NTLM is super outdated,
eliminating the warnings for OpenSSL 3.0 is still a step in the right
direction and using the correct APIs. We cheat a bit by using 3DES instead
of DES to avoid needing legacy provider for DES encryption for now.
Patch v4: add unit test, use 3DES to avoid legacy provider for now
Signed-off-by: Arne Schwabe <arne@rfc2549.org>
Acked-by: Max Fillinger <maximilian.fillinger@foxcrypto.com>
Message-Id: <20211029111109.2003101-1-arne@rfc2549.org>
URL: https://www.mail-archive.com/openvpn-devel@lists.sourceforge.net/msg23078.html
Signed-off-by: Gert Doering <gert@greenie.muc.de>
The test_check_ncp_ciphers_list test assumed that BF-CBC is always
available, which is no longer the case with OpenSSL 3.0. Rewrite the
test to not rely on BF-CBC to be available.
Signed-off-by: Arne Schwabe <arne@rfc2549.org>
Acked-by: Max Fillinger <maximilian.fillinger@foxcrypto.com>
Message-Id: <20211019183127.614175-14-arne@rfc2549.org>
URL: https://www.mail-archive.com/openvpn-devel@lists.sourceforge.net/msg23003.html
Signed-off-by: Gert Doering <gert@greenie.muc.de>
This just adds a very simple unit test to check that the HMAC
implementation produces a well known hash.
Signed-off-by: Arne Schwabe <arne@rfc2549.org>
Acked-by: Gert Doering <gert@greenie.muc.de>
Message-Id: <20211019183127.614175-18-arne@rfc2549.org>
URL: https://www.mail-archive.com/openvpn-devel@lists.sourceforge.net/msg23012.html
Signed-off-by: Gert Doering <gert@greenie.muc.de>
the unit tests do not compile under Windows since Windows does not
provide a unistd.h header. The header is still included on Unix
platforms via syshead.h
Signed-off-by: Arne Schwabe <arne@rfc2549.org>
Acked-by: Gert Doering <gert@greenie.muc.de>
Message-Id: <20210802100740.694474-1-arne@rfc2549.org>
URL: https://www.mail-archive.com/openvpn-devel@lists.sourceforge.net/msg22685.html
Signed-off-by: Gert Doering <gert@greenie.muc.de>
Currently P2P mode of OpenVPN is on of the few places that cannot negotiate
modern OpenVPN features. This becomes more and more problematic since P2P
and P2MP code diverge more and more and also the lack of switching to more
advanced features like Data v2 currently blocks P2P mode from working
together with the upcoming ovpn-dco support.
This NCP support is a lot simpler and works in the following way:
- P2P peer announce an extremely limited IV_ variable set
(IV_PROTO and IV_CIPHERS)
- Both peers check if the IV_PROTO_NCP_P2P bit is present in IV_PROTO
- if yes both sides deterministically determine according to
IV_PROTO and IV_CIPHER what options can be used and start using these
There are no poor man's NCP or other compatibility workaround like in the
normal NCP, making this NCP leaner and more deterministic.
Patch v2: remove empty lines, add doxygen comment to push_peer_info, fix
push_peer_info >= 2 that should be > 2
Signed-off-by: Arne Schwabe <arne@rfc2549.org>
Acked-by: Antonio Quartulli <antonio@openvpn.net>
Message-Id: <20210728123050.564595-1-arne@rfc2549.org>
URL: https://www.mail-archive.com/openvpn-devel@lists.sourceforge.net/msg22671.html
Signed-off-by: Gert Doering <gert@greenie.muc.de>
This changes that auth_token_initial is set when the token is
initially generated instead when pushing the token. Even I do not
know anymore why I did it in this way in the first place. Also use
multi->auth_token_initial as source for the sesssion ID since it should
now always be available. Also set auth_token_initial directly to
up->password once we verified that we have gotten a valid token from
a client. This cleans ups the logic in generating the environment and
makes the code flow clearer.
Since the change makes auth_token_initial always available we need to add
a check to only send a PUSH reply to update the token on renegotiations.
The old code relied on multi->auth_token not being set in this case.
This commit also removes the workaround for old OpenVPN clients. These
were only available as commercial OpenVPN Connect client and not in use
anymore.
Furthermore, introduce a check if the session ID has changed during a
session. Even though this is still a valid authentication changing to
a different auth token mid session is highly irregular and should never
occur naturally.
Patch V2: rebase.
Patch V3: fix formatting, clarifying commit message, remove initial
token workaround for old v3.
Patch v4: move sending the auth-token for renegotiations to a sane place
and trigger it when the TLS session reaches its fully authenticated
state.
Patch v5: Move also setting auth_token_inital from up->password to a more
logical place, general cleanups, add session id mismatch check
Patch v6: Rework some comments and general cleanup of small things
Signed-off-by: Arne Schwabe <arne@rfc2549.org>
Acked-by: Antonio Quartulli <antonio@openvpn.net>
Message-Id: <20210719133132.128783-1-arne@rfc2549.org>
URL: https://www.mail-archive.com/openvpn-devel@lists.sourceforge.net/msg22645.html
Signed-off-by: Gert Doering <gert@greenie.muc.de>
The auth-token check is tied to the username/password that is coming
via a specific SSL session, so keep the state also in the key_state
structure.
This also ensures the auth_token_state is always set to 0 on a new
session since we clear the key_state object at the start of a new
SSL session.
This is a prerequisite patch to fix 2020-15078 in the following two
commits.
This also applies the changes to the auth_token_test.c. The change of
tls_session to a pointer is necessary since before that we had tls_session
not tied to the multi and had two tls_session used in the test. One
implicitly in tls_multi and one explicit one. Merge these to one.
Signed-off-by: Arne Schwabe <arne@rfc2549.org>
Acked-by: Antonio Quartulli <antonio@openvpn.net>
Message-Id: <20210520151148.2565578-1-arne@rfc2549.org>
URL: https://www.mail-archive.com/openvpn-devel@lists.sourceforge.net/msg22415.html
Signed-off-by: Gert Doering <gert@greenie.muc.de>
