The visual studio windows builds spit dozens of lines of warnings
on these.
Signed-off-by: Jakub Jelen <jjelen@redhat.com>
Reviewed-by: Andreas Schneider <asn@cryptomilk.org>
When the user frees the channel, they no longer expect any callbacks
to be triggered on it. When we delay the close before we receive
the remaining messages, we should not trigger the user callbacks
as it might be already freed.
I believe this is the random torture_session test failures and
errors we are getting from valgrind from time to time.
We keep the callbacks cleanup in the do_cleanup() in case the
calling application sets the callback after free for some reason.
Signed-off-by: Jakub Jelen <jjelen@redhat.com>
Reviewed-by: Andreas Schneider <asn@cryptomilk.org>
In the meantime libgcrypt allocates 32k of secure memory, the minimum is
16k.
Signed-off-by: Andreas Schneider <asn@cryptomilk.org>
Reviewed-by: Jakub Jelen <jjelen@redhat.com>
The previous code created private key curve25519 in OpenSSL, then exported
private key and during key generation, created a new OpenSSL private key object.
This is needless amount of copying potentially sensitive data back and forth and
this will not work when the private key would be backed with external OpenSSL
provider, such as pkcs11 provider or different crypto accelerator handling the
private key operations for us.
Signed-off-by: Jakub Jelen <jjelen@redhat.com>
Reviewed-by: Sahana Prasad <sahana@redhat.com>
This commit changes the way in which receiving sftp
responses is handled.
The old way polled/blocked on the channel before
checking the sftp response queue which could cause infinite
waiting by default if the required response is already present
in the response queue and no other sftp response is ever sent
by the server.
The new way checks the sftp response queue first for the
response before polling/blocking on the channel. This gets
rid of the potential infinite waiting bug.
Signed-off-by: Eshan Kelkar <eshankelkar@galorithm.com>
Reviewed-by: Jakub Jelen <jjelen@redhat.com>
For the sake of reducing code repetition, this commit
adds a helper function to receive sftp response
messages. The function can operate in both blocking
and non-blocking modes.
Signed-off-by: Eshan Kelkar <eshankelkar@galorithm.com>
Reviewed-by: Jakub Jelen <jjelen@redhat.com>
Some SFTP servers (Cisco) do not implement the v3 protocol correctly and do not
send the mandatory part of the status message. This falls back to the v2
behavior when the error message and language tag are not provided.
Fixes: #272
Signed-off-by: Jakub Jelen <jjelen@redhat.com>
Reviewed-by: Sahana Prasad <sahana@redhat.com>
The second argument to strftime() should be the size of the buffer
as per the manpage.
The previous code used size - 1 as the second argument. This commit modifies
that behaviour to use buffer size as the second argument of strftime().
Signed-off-by: Eshan Kelkar <eshankelkar@galorithm.com>
Reviewed-by: Jakub Jelen <jjelen@redhat.com>
Windows supports localtime_s() instead of POSIX's localtime_r()
and the function prototype of localtime_s() is different as compared
to localtime_r().
This commit introduces ssh_localtime() (having same prototype as localtime_r())
for Windows which acts as a wrapper for localtime_s(), and defines localtime_r
as a macro which expands to ssh_localtime for Windows.
As a result, libssh can now use localtime_r() on Windows in the same manner
as localtime_r() can be used on POSIX systems.
Signed-off-by: Eshan Kelkar <eshankelkar@galorithm.com>
Reviewed-by: Jakub Jelen <jjelen@redhat.com>
Renamed `process_unsupposed` to `process_unsupported`.
Signed-off-by: James Wrigley <james@puiterwijk.org>
Reviewed-by: Jakub Jelen <jjelen@redhat.com>
The "sane" default is now based on the man stty "sane" alias with addition of
utf8.
Fixes: #270
Signed-off-by: Jakub Jelen <jjelen@redhat.com>
Reviewed-by: Andreas Schneider <asn@cryptomilk.org>
For some reason, both compress and decompress contexts were terminated
with both compress and decompress end functions (if the deflateEnd worked),
which was causing for some another unexplained reasons issues on i686
architecture when running the torture_packet unit test.
Signed-off-by: Jakub Jelen <jjelen@redhat.com>
Reviewed-by: Andreas Schneider <asn@cryptomilk.org>
This is more portable than specifying a compiler flag explicitly.
Signed-off-by: James Wrigley <james@puiterwijk.org>
Reviewed-by: Jakub Jelen <jjelen@redhat.com>
Some architectures (esp32) might not have this API.
Fixes: #263
Signed-off-by: Jakub Jelen <jjelen@redhat.com>
Reviewed-by: Andreas Schneider <asn@cryptomilk.org>
This removes the code reported by the following coverity issue:
*** CID 1548867: Insecure data handling (INTEGER_OVERFLOW)
Signed-off-by: Jakub Jelen <jjelen@redhat.com>
Reviewed-by: Sahana Prasad <sahana@redhat.com>
Reviewed-by: Eshan Kelkar <eshankelkar@galorithm.com>
The coverity thinks the best_nlines could be 0 for logging at the end of the
function. It is obvious that the 0 is immediately incremented. Changing the code
to do this in one step to make it easier to understand for static analyzers.
** CID 1548873: Integer handling issues (INTEGER_OVERFLOW)
Thanks coverity
Signed-off-by: Jakub Jelen <jjelen@redhat.com>
Reviewed-by: Sahana Prasad <sahana@redhat.com>
Reviewed-by: Eshan Kelkar <eshankelkar@galorithm.com>
fix: implement gssapi logging according to docs
fix: remove redundant setting of session->gssapi to NULL
feat: add gssapi struct and functions to header file
refactor: initialize gssapi context once
fix: remove redundant ssh_gssapi_free
Signed-off-by: Gauravsingh Sisodia <xaerru@gmail.com>
Reviewed-by: Jakub Jelen <jjelen@redhat.com>
Reviewed-by: Sahana Prasad <sahana@redhat.com>
feat: tests set hostname for sshd, make GSSAPIStrictAcceptorCheck yes pass
feat: add GSSAPI_TESTING cmake option
feat: gssapi libssh server test
feat: make kdc setup and teardown functions
feat: add kinit, kadmin scripts to kdc setup function
feat: add some client gssapi auth tests
Signed-off-by: Gauravsingh Sisodia <xaerru@gmail.com>
Reviewed-by: Jakub Jelen <jjelen@redhat.com>
Reviewed-by: Sahana Prasad <sahana@redhat.com>
tests: modify proxyjump tests to check for ssh_jump_info_struct
tests: add proxyjump functionality test
feat: add SSH_OPTIONS_PROXYJUMP
tests: proxyjump, check authentication
fix: ssh_socket_connect_proxyjump add exit label to exit on error
feat: implement io forwarding using pthread
feat: proxyjump: use threading instead of forking
feat: proxyjump: cancel forwarding threads on ssh_disconnect
fix: proxyjump remove ProxyJump bool and put pthread ifdefs
feat: use ssh_event for io forwarding instead of threads
reformat: tests to use assert_int_not_equal
fix: link to pthread
refactor: make function to free proxy jump list
docs: add comment for proxy jump channel
feat: add env variable to enable libssh proxy jump
feat: open channel for proxyjump like OpenSSH
feat: add more tests for proxy jump
fix: use a global variable to close io forwarding, this prevents segfaults
fix: handle proxy list in thread without creating copy
Signed-off-by: Gauravsingh Sisodia <xaerru@gmail.com>
Reviewed-by: Jakub Jelen <jjelen@redhat.com>
Reviewed-by: Eshan Kelkar <eshankelkar@galorithm.com>
.. to satisfy restricted environment or fuzzers
We are encountering weird issues in the oss-fuzz that the file disappears during
coverage build so I assume some corpus sneaked in, that contains some commands
that end up being executed as part of the coverage run causing it randomly
failing.
The solution I propose is to build fuzzers without ability to call arbitrary
commands on the filesystem (such as `rm -rf /`) as this is not the point the
fuzzers should be testing.
This is controlled by the WITH_EXEC CMake option (enabled by default).
https://github.com/google/oss-fuzz/issues/10136
Signed-off-by: Jakub Jelen <jjelen@redhat.com>
Reviewed-by: Sahana Prasad <sahana@redhat.com>
Reviewed-by: Eshan Kelkar <eshankelkar@galorithm.com>
Turns out it indirectly included err.h, which was needed for some other uses in
this file.
Signed-off-by: Jakub Jelen <jjelen@redhat.com>
Reviewed-by: Sahana Prasad <sahana@redhat.com>
Reviewed-by: Eshan Kelkar <eshankelkar@galorithm.com>
