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This fills in the remaining gap in the interactive prompt rework of the proxy system in general. If you used the Telnet proxy with a command containing %user or %pass, and hadn't filled in those variables in the PuTTY config, then proxy/telnet.c would prompt you at run time to enter the proxy auth details. But the local proxy command, which uses the same format_telnet_command function, would not do that. Now it does! I've implemented this by moving the formatting of the proxy command into a new module proxy/local.c, shared between both the Unix and Windows local-proxy implementations. That module implements a DeferredSocketOpener, which constructs the proxy command (prompting first if necessary), and once it's constructed, hands it to a per-platform function platform_setup_local_proxy(). So each platform-specific proxy function, instead of starting a subprocess there and then and passing its details to make_fd_socket or make_handle_socket, now returns a _deferred_ version of one of those sockets, with the DeferredSocketOpener being the thing in proxy/local.c. When that calls back to platform_setup_local_proxy(), we actually start the subprocess and pass the resulting fds/handles to the deferred socket to un-defer it. A side effect of the rewrite is that when proxy commands are logged in the Event Log, they now get the same amenities as in the Telnet proxy type: the proxy password is sanitised out, and any difficult characters are escaped.
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.