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In cmdline_get_passwd_input(), there's a boolean 'tried_once' which is set the first time the function returns the password set by -pw or -pwfile. The idea, as clearly commented in the code, was that if cmdline_get_password_input asks for that password _again_, we return failure, as if the user had refused to make a second attempt. But that wasn't actually what happened, because when we set tried_once to true, we also set cmdline_password to NULL, which causes the second call to the function to behave as if no password was ever provided at all. So after the -pw password failed, we'd fall back to asking interactively. This change moves the check of cmdline_password to after the check of tried_once, restoring the originally intended behaviour: password authentication will now _only_ be done via the pre-set password, if there is one. This seems like an xkcd #1172 kind of change: now that it's been wrong for a while, _someone_ has probably found the unintended behaviour useful, and started relying on it. So it may become necessary to add an option to set the behaviour either way. But for the moment, let's try it the way I originally intended it.
This is the README for PuTTY, a free Windows and Unix Telnet and SSH
client.
PuTTY is built using CMake <https://cmake.org/>. To compile in the
simplest way (on any of Linux, Windows or Mac), run these commands in
the source directory:
cmake .
cmake --build .
Documentation (in various formats including Windows Help and Unix
`man' pages) is built from the Halibut (`.but') files in the `doc'
subdirectory using `doc/Makefile'. If you aren't using one of our
source snapshots, you'll need to do this yourself. Halibut can be
found at <https://www.chiark.greenend.org.uk/~sgtatham/halibut/>.
The PuTTY home web site is
https://www.chiark.greenend.org.uk/~sgtatham/putty/
If you want to send bug reports or feature requests, please read the
Feedback section of the web site before doing so. Sending one-line
reports saying `it doesn't work' will waste your time as much as
ours.
See the file LICENCE for the licence conditions.