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* Refactor tls code to support ucspi-tlsLaurent Bercot2020-11-201-35/+0
| | | | | | | | | | | | | | | | | | That includes: - new architecture: the tls binary is now a child of the app instead of the other way around - the sbearssl_run engine now takes a post-handshake callback. This allows s6-tlsc and s6-tlsd to only exec into the app when the handshake succeeds (which was already the case with libressl). - new binaries s6-tlsc-io and s6-tlsd-io encapsulate the crypto code; they init and run the engine, connecting to 4 already open fds (stdin/stdout = network, argv[1] and argv[2] = local) - s6-tlsc is now a simple wrapper around s6-tlsc-io - s6-tlsd is now a simple wrapper around s6-tlsd-io - new binary: s6-ucspitlsd, which is also a wrapper around s6-tlsd-io, but differently: the parent execs the app which should be ucspi-tls-aware, the child waits for a command from the parent and execs into s6-tlsd-io if it receives it.
* Fix case where s6-tls[cd] would sometimes not detect an application and ↵Laurent Bercot2017-03-221-0/+35
remain there forever with its zombie, both condemned to err in limbo for all eternity, the living and the dead, hand in hand