The tools like `adig` and `ahost` can take advantage of some of the
library functions within c-ares. We can't really split these library
functions into a helper library without possibly breaking users.
Technically if we could guarantee they rely on pkg-config or cmake
helpers we could make it work ... we can revisit that in the future,
maybe if we make a c-ares 2.0 where people might expect more breakage
(but I still wouldn't want to break API/ABI).
So what this does is it just exports some symbols in headers that aren't
distributed so end users aren't meant to use the symbols, but any
utilities or tests built by c-ares can. It does clutter up some of the
namespace, but all these symbols are guaranteed to be prefixed with
`ares_` so there shouldn't ever be symbol clashes due to this for end
users and its not so many symbols that it should affect any load times.
There will be **zero** API/ABI guarantees for these symbols. They can
change from release to release, this is ok since they are not public.
I'm not entirely thrilled with doing this solution, but I want to avoid
thing like hand-written parsers, such as is used in #856.
Authored-By: Brad House (@bradh352)
Multiple functions have been deprecated over the years, annotate them
with attribute deprecated.
When possible show a message about their replacements.
This is a continuation/completion of PR #706
Fix By: Cristian Rodríguez (@crrodriguez)
GoogleTest should be unbundled. Google changed their guidance a few years back and modern versions of google test cannot build the bundling code file.
This PR also updates to use C++14 as is required by modern GoogleTest versions.
Fixes Bug: #506
Fix By: Brad House (@bradh352)
All files have their licence and copyright information clearly
identifiable. If not in the file header, they are set separately in
.reuse/dep5.
All used license texts are provided in LICENSES/
As per RFC6761 Section 6.3, "localhost" lookups need to be special cased to return loopback addresses, and not forward queries to recursive dns servers.
We first look up via files (/etc/hosts or equivalent), and if that fails, we then attempt a system-specific address enumeration for loopback addresses (currently Windows-only), and finally fallback to ::1 and 127.0.0.1.
Fix By: Brad House (@bradh352)
Fixes Bug: #399
Originally started by Daniel Stenberg (@bagder) with #123, this patch reorganizes the c-ares source tree to have a more modern layout. It also fixes out of tree builds for autotools, and automatically builds the tests if tests are enabled. All tests are passing which tests each of the supported build systems (autotools, cmake, nmake, mingw gmake). There may be some edge cases that will have to be caught later on for things I'm not aware of.
Fix By: Brad House (@bradh352)
The rc4 function iterates over a buffer of size buffer_len who's maximum
value is INT_MAX with a counter of type short that is not guaranteed to
have maximum size INT_MAX.
In circumstances where short is narrower than int and where buffer_len
is larger than the maximum value of a short, it may be possible to loop
infinitely as counter will overflow and never be greater than or equal
to buffer_len.
The solution is to make the comparison be between types of equal width.
This commit defines counter as an int.
Fix By: Fionn Fitzmaurice (@fionn)
Brad House
Daniel Stenberg
Fionn Fitzmaurice