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* Use Camel_Snake_Case for type names.
* Use at least 4 characters for constant names. I.e. `END` is a type
name, but `RETURN` is a constant name. This is because `DHT` is a type
name (yay consistency).
* Using `min_*` functions instead of MIN, we can avoid a cast.
* Use `for`-loops for for-each-frame semantics instead of `while`.
* Don't use assignments as expressions.
* `++i` instead of `i++`.
* Function pointers are dereferenced automatically, so no need to
manually do so.
* Avoid void pointers that lie about not being spaghetti code. Toxcore
and toxav are both spaghetti and shouldn't pretend anything else.
* Don't use empty statements (e.g. no `;;` anywhere in the code).
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Instead of importing a well-known file. This gives toktok-stack more
freedom in where and how it wants to define its interface, as long as it
provides the configurations requested ("linux" and "clang").
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* Fix `toxav_get_tox` to return tox, not messenger.
* Fix the casts from Tox* to Messenger* in toxav_old.c.
* Pass Tox instead of Messenger to public group AV callbacks.
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Somehow it still works because the lower levels can deal with
inconsistent/broken state, but this lets us avoid that broken state in
the first place. If a friend connection doesn't exist, we don't add it to
our group.
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* Constant-style macros can't be function call expressions. These must be
function calls themselves.
* Assignments can't be used as expressions.
* Therefore: `while` loops should not be used as a `for-each`
construct. Use `for`, instead.
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This checks that (some of) the code follows some simplicity and naming
guidelines set by the tool.
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This probably doesn't happen, but it can in theory, so we avoid it.
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* No anonymous structs.
* No assignment expressions.
* Only one declarator per struct member declaration.
* Named callback types only, no inline types.
* No `;` empty statements.
* `++i` instead of `i++`.
Avoiding a cast in toxav_old.c avoids some potential (and real) bugs.
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* Named callback types only.
* No anonymous enums or structs.
* `++i` instead of `i++`.
* Don't use enums to specify integer constants. Enums should be
enumerations. All values of an enum type should be listed[1].
[1] I don't know what to do about bit masks yet, but given that enums by
C standard can only go up to 32767 portably and 2^31 in reality, they are
probably not useful for 64 bit bit masks.
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* Don't use anonymous enums (`typedef enum { ... } Name;`).
* Don't use macros to generate structs (too magical, hard to grep).
* Assign output parameter once, and don't access it a lot in the
function body.
* Don't pass type names as parameters to macros (this is C, we don't have
templates, sorry).
* All function-like macros must be do-while(0).
* `++i` instead of `i++`.
* No assignment-expressions.
* No void-casts.
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The void pointer here only adds opportunity to introduce bugs and doesn't
actually make things more layered. It's just the code lying about being
layered while it's actually spaghetti.
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Forward declarations are problematic, as they easily allow introducing
cyclic dependencies.
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* Comments in macros must be `//` style.
* No inner structs.
* Named callback types.
* `++i` instead of `i++`.
* No assignments as expressions.
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These always fail at present. We'll need to look into making them not
always fail so we can enable them and get some useful signal from them.
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This avoids its dependency on FreeBSD.
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This is always true due to the condition function, but if we introduce a
bug that makes the condition not be applied, this causes undefined
behaviour.
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Also remove the use of a VLA in a context where there can be unbounded
memory allocations.
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We use functions for this instead.
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The enumerators won't change, but the type name will change in 0.3.0.
Reasoning:
- Type names in toxcore start with an uppercase letter and either have at
least one lowercase letter in them, or are less than 4 characters long.
- Constants consist of 4 or more uppercase letters or underscores.
By these rules, "DHT" is a type name, but "TOX_USER_STATUS" is a
constant. We provide Tox_User_Status as an alternative for now, and will
switch to that in 0.3.0, removing the UPPER_CASE versions.
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Presumably the uses of `rand()` were fine because they were not used in
security-sensitive places, but having to think about whether a crappy RNG
is acceptable in each situation requires effort that could better be
spent elsewhere.
Also, this means that once we have a custom deterministic RNG for
testing, that RNG is used everywhere, so all the code is deterministic.
It also allowed us to delete a system-specific function that wasn't used
anywhere except in a call to `srand()`.
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The logger callback can only be set once at the beginning, because it
requires user data coming from `Tox_Options`.
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This allows Tox to contain additional data on top of Messenger, making
Messenger not necessarily the most top-level object. E.g. groups are
built on Messenger and currently awkwardly void-pointered into it to
pretend there is no cyclic dependency.
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All for-loops in toxcore are of the form
for (<for-init>; <for-cond>; <for-next>) { <body> }
`for-init` can be a variable declaration (like `int i = 0`), an
assignment (like `i = 0`), or empty.
`for-cond` can be any expression.
`for-next` can be an assignment or a single increment/decrement
expression (like `++i` or `--i`).
No other forms are allowed, so e.g. comma expressions in any of these are
not allowed (so no `for (i = 0, j = n; ...; ++i, --j)`).
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* test names in conference_test
* raise error on attempt to invite friend to group before we are connected
* revise handling of temporary invited connections
We are now careful not to prematurely delete a connection to a peer
established during the invitation process; namely, before we have sufficient
other connections and have confirmed that we have an alternative route to the
peer.
* process out-of-order messages from a peer
* don't reset names when handling a Peer Response
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Mosts of the tests in auto_tests weren't running when the project
was built using autotools. This fixes that.
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`UID` sounds like `User ID`. While it is a Unique ID, the property of an
"identifier" is generally that it identifies a unique thing, so the 'U'
is redundant, and `GUID` as a globally unique id (which is likely also
true for these IDs) has a specific meaning and syntax, so we're not using
that. So, we just say conference `id`.
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Renamed a poorly named test, fixed up a few printf statements,
substituted some unsigned integers with fixed size counterparts,
and implemmented the auto_run_test.h fixture for the lossy and
lossless packet tests.
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The file_saving_test.c was not included in the cmake list
and thus was ignored by travis and "make check". I found this
out while introducing ck_assert_msg into the integration test.
Furthermore, removed some variable width integers from encryptsave_test.c,
and the SRunner utilization. Implemmented ck_assert_msg, reorganized some
loops, and removed some longs in file_transfer_test.c.
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This uses a single .cc file containing almost all the code in the
repository to perform whole program analysis.
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Also, avoid the need for putting `_XOPEN_SOURCE` in every test file.
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Also removed an unused identifier in messenger_test.c.
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This almost entirely avoids any else-after-return in toxcore. One case is
left, and that one is more readable this way.
Why no else after return: https://llvm.org/docs/CodingStandards.html#don-t-use-else-after-a-return
Why exemptions exist: https://blog.mozilla.org/nnethercote/2009/08/31/no-else-after-return-considered-harmful/
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astyle doesn't catch all of these.
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