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Cleanups:
- Fix header guards to not use reserved names.
- Avoid name shadowing.
- Removed an unused variable found by avoiding name shadowing.
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It is still C code, so still compatible with C compilers as well. This
change lets us see more clearly where implicit conversions occur by
making them explicit.
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- All global variables should be static unless they have an explicit
extern declaration in a header file.
- `to_compare` was not used in encryptsave and toxav tests.
- `break` in switch cases is not required directly after `return`,
`goto`, or a noreturn function like `abort`.
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This reverts commit 21f8db12c45bd56293262cd4abfb73cd9abec821.
It is currently broken. Incoming call callbacks are not invoked, and
instead the client goes offline immediately.
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It now enforces a bit more formatting. In particular, padding inside
parentheses is removed. I would like it to remove padding after unary
operators, but there seems to be no option for that.
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1. Current module (if C file).
2. Headers from current library.
3. Headers from other library (e.g. toxcore includes in toxav).
4. System headers.
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- Any non-externally-visible declarations should be `static`.
- Casting away the `const` qualifier from pointers-to-const is
dangerous. All but one instance of this are now correct. The one
instance where we can't keep `const` is one where toxav code actually
writes to a chunk of memory marked as `const`. This code also assumes
4 byte alignment of data packets. I don't know whether that is a valid
assumption, but it's likely unportable, and *not* obviously correct.
- Replaced empty parameter lists with `(void)` to avoid passing
parameters to it. Empty parameter lists are old style declarations for
unknown number and type of arguments.
- Commented out (as `#if DHT_HARDENING` block) the hardening code that
was never executed.
- Minor style fix: don't use `default` in enum-switches unless the number
of enumerators in the default case is very large. In this case, it was
2, so we want to list them both explicitly to be warned about missing
one if we add one in the future.
- Removed the only two function declarations from nTox.h and put them
into nTox.c. They are not used outside and nTox is not a library.
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http://llvm.org/docs/CodingStandards.html#use-early-exits-and-continue-to-simplify-code
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This removes the global logger (which by the way was deleted when the first tox
was killed, so other toxes would then stop logging). Various bits of the code
now carry a logger or pass it around. It's a bit less transparent now, but now
there is no need to have a global logger, and clients can decide what to log and
where.
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Friend number changed from int32_t to uint32_t.
Some lengths changed to size_t.
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If msi.c:timer_terminate_session frees "handler", then when msi.c:timer_poll's thread resumes, there WILL be a use after free of "handler", with a likely segfault.
This use after free causes a crash in qTox, see tux3/qTox#534
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