This fails if the gethostname() fails in a way that does not write the
buffer, but returns 0 as a success.
Fixes#106
Thanks oss-fuzz
Signed-off-by: Jakub Jelen <jjelen@redhat.com>
Reviewed-by: Andreas Schneider <asn@cryptomilk.org>
Reviewed-by: Sahana Prasad <sahana@redhat.com>
Avoid calling random() and use ssh_get_random() instead.
CID #1412376
Signed-off-by: Anderson Toshiyuki Sasaki <ansasaki@redhat.com>
Reviewed-by: Jakub Jelen <jjelen@redhat.com>
Given a string, the added function encodes existing newline characters
('\n') as the string "\\n" and puts into a given output buffer.
The output buffer must have at least 2 times the length of the input
string plus 1 for the terminating '\0'. In the worst case, each
character can be replaced by 2 characters.
Fixes T189
Signed-off-by: Anderson Toshiyuki Sasaki <ansasaki@redhat.com>
Reviewed-by: Andreas Schneider <asn@cryptomilk.org>
Reviewed-by: Jakub Jelen <jjelen@redhat.com>
The added function quote file names strings to be used in a shell.
Special cases are treated for the charactes '\'' and '!'.
Fixes T181
Signed-off-by: Anderson Toshiyuki Sasaki <ansasaki@redhat.com>
Reviewed-by: Andreas Schneider <asn@cryptomilk.org>
If the given path includes missing directories, ssh_mkdirs() tries to
create them recursively.
Signed-off-by: Anderson Toshiyuki Sasaki <ansasaki@redhat.com>
Reviewed-by: Andreas Schneider <asn@cryptomilk.org>
The introduced internal function checks if the provided path is for an
existing directory which is accessible for writing.
Signed-off-by: Anderson Toshiyuki Sasaki <ansasaki@redhat.com>
Reviewed-by: Andreas Schneider <asn@cryptomilk.org>
For example "%d/config%%1" is expanded to "~/.ssh/config%1".
Signed-off-by: Richard W.M. Jones <rjones@redhat.com>
Reviewed-by: Jakub Jelen <jjelen@redhat.com>
Reviewed-by: Andreas Schneider <asn@cryptomilk.org>
The introduced internal function is intended to be a replacement for the
deprecated function ssh_print_hexa().
Signed-off-by: Anderson Toshiyuki Sasaki <ansasaki@redhat.com>
Reviewed-by: Andreas Schneider <asn@cryptomilk.org>
Fixes, among others, ProxyCommand with %p when no port is used on
commandline or config file, thus using the default port.
Fixes T94
Signed-off-by: Alex Hermann <alex@hexla.nl>
Reviewed-by: Andreas Schneider <asn@cryptomilk.org>
Useful on Windows platforms where SecureZeroMemory is available.
Signed-off-by: Alberto Aguirre <albaguirre@gmail.com>
Reviewed-by: Andreas Schneider <asn@cryptomilk.org>
Summary:
This patch adds support for mbedTLS as a crypto backend for libssh.
mbedTLS is an SSL/TLS library that has been designed to mainly be used
in embedded systems. It is loosely coupled and has a low memory
footprint. mbedTLS also provides a cryptography library (libmbedcrypto)
that can be used without the TLS modules.
The patch is unfortunately quite big, since several new files had to
be added.
DSA is disabled at compile time, since mbedTLS doesn't support DSA
Patch review and feedback would be appreciated, and if any issues or
suggestions appear, I'm willing to work on them.
Signed-off-by: Juraj Vijtiuk <juraj.vijtiuk@sartura.hr>
Test Plan:
* The patch has been tested with a Debug and MinSizeRel build, with
libssh unit tests, client tests and the pkd tests.
* All the tests have been run with valgrind's memcheck, drd and helgrind
tools.
* The examples/samplessh client works when built with the patch.
Reviewers: asn, aris
Subscribers: simonsj
Differential Revision: https://bugs.libssh.org/D1
Relax the cases where `ssh_analyze_banner` fails to extract a
major and minor version from banners which appear like OpenSSH
banners.
Update the tests to demonstrate that now a banner as might be
sent by `ssh-keyscan(1)` ("SSH-2.0-OpenSSH-keyscan") no longer
returns failure.
Signed-off-by: Jon Simons <jon@jonsimons.org>
Reviewed-by: Andreas Schneider <asn@cryptomilk.org>
Fix error-checking for `strtoul` in `ssh_analyze_banner`, and
enable some tests which demonstrate the fix before-and-after.
Signed-off-by: Jon Simons <jon@jonsimons.org>
Reviewed-by: Andreas Schneider <asn@cryptomilk.org>
No changes to code, only whitespace indentation and
an update to the function docs.
Signed-off-by: Jon Simons <jon@jonsimons.org>
Reviewed-by: Andreas Schneider <asn@cryptomilk.org>
