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@dir /ext
@brief Externally maintained code
The "ext" directory holds code that was written elsewhere, and is not
reliably packaged as a library where we want to build, so we ship
it along with Tor.
In general, you should not edit this code: we are not the maintainers.
Instead, you should submit patches upstream.
OpenBSD_malloc_Linux.c:
> The OpenBSD malloc implementation, ported to Linux. Used only when
> --enable-openbsd-malloc is passed to the configure script.
strlcat.c
strlcpy.c
> Implementations of strlcat and strlcpy, the more sane replacements
> for strcat and strcpy. These are nonstandard, and some libc
> implementations refuse to add them for religious reasons.
ht.h
> An implementation of a hash table in the style of Niels Provos's
> tree.h. Shared with Libevent.
tinytest.c tinytest.h
tinytest_demos.c
tinytest_macros.h
> A unit testing framework. https://github.com/nmathewson/tinytest
tor_queue.h
> A copy of sys/queue.h from OpenBSD. We keep our own copy rather
> than using sys/queue.h, since some platforms don't have a
> sys/queue.h, and the ones that do have diverged in incompatible
> ways. (CIRCLEQ or no CIRCLEQ? SIMPLQ or STAILQ?) We also rename
> the identifiers with a TOR_ prefix to avoid conflicts with
> the system headers.
curve25519_donna/*.c
> A copy of Adam Langley's curve25519-donna mostly-portable
> implementations of curve25519.
csiphash.c
siphash.h
> Marek Majkowski's implementation of siphash 2-4, a secure keyed
> hash algorithm to avoid collision-based DoS attacks against hash
> tables.
trunnel/*.[ch]
> Headers and runtime code for Trunnel, a system for generating
> code to encode and decode binary formats.
ed25519/ref10/*
> Daniel Bernsten's portable ref10 implementation of ed25519.
> Public domain.
ed25519/donna/*
> Andrew Moon's semi-portable ed25519-donna implementation of
> ed25519. Public domain.
keccak-tiny/
> David Leon Gil's portable Keccak implementation. CC0.
readpassphrase.[ch]
> Portable readpassphrase implementation from OpenSSH portable, version
> 6.8p1.
timeouts/
> William Ahern's hierarchical timer-wheel implementation. MIT license.
mulodi/
> Contains an overflow-checking 64-bit signed integer multiply
> from LLVM's compiler_rt. For some reason, this is missing from
> 32-bit libclang in many places. Dual licensed MIT-license and
> BSD-like license; see mulodi/LICENSE.TXT.
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