• src/ssh/README.md TODO.md client.c deucessh.h server.c ssh-internal.h

    From Deuc¿@VERT to Git commit to main/sbbs/master on Saturday, March 28, 2026 12:55:04
    https://gitlab.synchro.net/main/sbbs/-/commit/f7930e7e170ab1235b2125fd
    Modified Files:
    src/ssh/README.md TODO.md client.c deucessh.h server.c ssh-internal.h ssh.c
    Log Message:
    Close item 83: terminate callback + single-fire set_terminate

    Add dssh_terminate_cb and dssh_session_set_terminate_cb() so the
    application can close sockets or signal its event loop when the session terminates, unblocking I/O callbacks that would otherwise cause dssh_session_cleanup() to hang on thrd_join.

    Make dssh_session_set_terminate() single-fire via atomic_exchange --
    previously it unconditionally re-broadcast all condvars on every call.
    The callback fires exactly once, before condvar broadcasts, from
    whichever thread triggers termination.

    Update I/O callback documentation to state that callbacks MUST return
    promptly when dssh_session_is_terminated() is true. Update client.c
    and server.c to use shutdown(fd, SHUT_RDWR) in the terminate callback.

    Co-Authored-By: Claude Opus 4.6 (1M context) <[email protected]>

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