Do not restrict chars in dname during label expansion, but validate resulting
hostnames before returning them to the caller.

ok deraadt@

report extra PTR records as aliases

most obvious unsigned char casts for ctype
ok jca krw ingo

missing symbol rename.

Make some symbols static and prefix all visible symbols with asr_
to prevent collisions with third-party programs.

suggested by sthen@, ok theo@

Make hostaliases work for gethostbyname() and getaddrinfo() when
looking into /etc/hosts. Remove the alias check from the search
domain iteration. Instead, take a shortcut to res_query_async_ctx() i

Make hostaliases work for gethostbyname() and getaddrinfo() when
looking into /etc/hosts. Remove the alias check from the search
domain iteration. Instead, take a shortcut to res_query_async_ctx() in
res_search_async_ctx().

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Do not take external buffers for storing DNS responses in the internal
async API. That is actually useless and it makes the code more
complicated. The required buffers are always allocated when nee

Do not take external buffers for storing DNS responses in the internal
async API. That is actually useless and it makes the code more
complicated. The required buffers are always allocated when needed.

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spacing

properly follow the CNAME chain in reverse lookups

spotted by sthen@

space cleanup; ok eric

rename field

Do not fail in gethostbyname_async() if there are multiple addresses in
a DNS packet...

Only use the search domains for DNS lookups, as the current resolver does.
Better not diverge too much in behavior at this point.
Typo fix and doc update while there.

Allow gethostbyname() to accept a numeric IP string.
No lookup is done in this case.

regression reported by espie@

Saner implementation for self-contained hostent and netent, and also
a couple of fixes.

knf

make separate structures for pack and unpack

include yp headers if necessary.
remove unused variable.

implement basic YP support for gethostbyname_async()/gethostbyaddr_async()
by using the blocking YP API internally.

When building dynamic hostent and netent, allocate a single linear buffer to
hold both the structure and the data. The freehostent() and freenetent() API
functions are not needed anymore. While ther

When building dynamic hostent and netent, allocate a single linear buffer to
hold both the structure and the data. The freehostent() and freenetent() API
functions are not needed anymore. While there, ensure that the constructed
addr and alias lists are really NULL terminated.

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unused variables

simplify the code, improve error handling and plug a potential fd leak on error

use the value actually passed to the function

fix a few warnings

Import asr, an experimental async resolver implementation.
The idea is to eventually replace the existing resolver with
something better. Time to start working on it in tree.

ok deraadt@