PC-Online 1996 May/PCOnline_05_1996.bin/linux/source/n/bind/bind-4.001/bind-4~/bind-4.9.3-BETA9/TODO

Text File | 1994-07-19 | 9KB | 170 lines

$Id: TODO,v 4.9.1.8 1994/07/19 22:51:24 vixie Exp $

Things to do.  Each entry should contain the proposer, date proposed, and an
explaination of what's being proposed.  New ones are added at the bottom.
Note that the author/coordinator of BIND does not neccessarily endorse all
of the proposals listed herein; if you did not get explicit "buy-in" then
your changes may not be accepted even if they appear in proposal form here
in this file.

[[e-mail] 25apr93]: clean up #ifdef's and portability
    feature #ifdef's should be limited to whole functions, which will be
    called no matter what and would only be non-empty if the feature is
    enabled.  allow feature ifdef's in .h files, though.

    portability #ifdef's should be limited to whole functions, too.  add
    a new portability.c module that implements anything which varies from
    system to system.

    add a second portability.h-like file that is included _before_ all the
    system includes.  portability.h as it stands is included _after_ all
    system includes, which is convenient for most things but not all.

[[e-mail] 26apr93]: sortlist improvement
    Improve the code around the sortlist area to better cope with parallel
    networks of different speeds. The -i hack I sent to you could function
    as inspiration only.

[[e-mail] 26apr93]: add an INN style control interface
    to replace sending signals.  With that expand debugging to
    permit monitoring of actions taken on a single query
    (query through control port, full traced as it occurs)
    or all queries that reference some particular name or
    zone, or which are forwarded, or asked, of some
    particluar server.   Allow reloads & dumps of a single
    zone, rather     than the whole universe.  Allow selective
    cache pruning (to edit away bad data that's been obtained
    from somewhere)

[[e-mail] 26apr93]: add a syntax to zone files (non rfc
    standard, but I don't care) to permit RR's to age away
    at some particular time, and others to become active at
    some particular time (probably with a syntax something
    like     "<[date]"  or  "@[date]"   preceding, or in the
    former case, replacing, the TTL field of the record).
    Approaching "date" in the "<[date]" case, the TTL's on
    the record would be decreased, so no data cached anywhere
    will remain valid after "date", after "date", this RR
    would simply be inoperative (essentially identical to
    a comment).  In the "@[date]" case (or perhaps ">[date]"
    for symmetry) the RR would be ignored until "date" at
    which time the "@[date]" field would simply be ignored.
    Both annotations could be used together (with
    appropriate interpretations depending on which date is
    earlier than the other).   Annotations on RR's in a zone
    would cause the SOA parameters to be automatically
    adjusted in zone transfers (and SOA requests) so that
    secondary servers would also hand out the same values
    (dropping the TTL down low as a "<[date]" approaches,
    and forcing a new zone transfer at "date").

[[e-mail] 26apr93]: TXT RR improvements
    - fix TXT records so that they can deal properly with multiple
    strings (e.g., ``foo    IN    TXT    "aaa" "bbb"'').  This
    results in a fair number of smallish changes throughout the
    code and also throughout various tools (e.g., nslookup).

[[e-mail] 16may93]: need an option to die if primary zone file missing
    as of 4.9, a server will not forward a query if it is itself on the
    NS list for the relevant domain.  this means that if a primary server
    cannot load its zone file, it will not be able to answer queries in
    that zone -- it won't even forward them.  this is arguably correct,
    since it prevents bad forwarding loops when two or more servers are
    all unable to load the zone (primary or secondary, with secondary
    failures being the more common).  what is needed is real loop detection
    such that reasonable non-looping queries can be forwarded.  what we're
    likely to actually get is an option that causes named to just syslog
    and die if it can't load a primary zone file.  note that at present,
    named is running somewhat bare-assed since an expired zone in a
    secondary (or missing zone file in a primary) will cause that named
    to return SERVFAIL for all queries to that zone.  if your screwed up
    primary/secondary server is also the forwarding server for a collection
    of hosts, those hosts will get SERVFAIL's back from queries to the
    affected domains, and depending on the age of their resolvers, they
    might not try other servers after they get the first SERVFAIL.
    [ this entry was written by Paul Vixie after getting a problem report
      from Kyle after uu.net disappeared in a brief but ugly way.  --vix ]

[[e-mail] 05jun94]: things i'm expecting to fix someday:
    -> finish STATS (b+tree?), remove older A_RR-based tagging
    -> (more?) svr4 changes from wisner@well, marc@cam, istewart@datlog
    -> switch completely to posix-style signals
    -> xfrnets directives should aggregate
    -> syntactic sugar to use "mtime" of file as soa serial number
    -> better support for "firewalls" (zohar@ibm, minnich@dupont)
    -> attributes in TXT RR (cpw@lanl)
    -> fix database consistency problems during zone reloads (Bob Heiney)
    -> preliminary support for variable width subnet masks
    -> failover isn't working very well for hesiod queries (gshapiro)
    -> dig needs to be able to turn on RES_INSECURE{1,2} options
    -> clean out old RR's that lay within a newly loaded zone file (heiney)
    -> automatically refresh root.cache from the root servers periodically
    -> Makefiles should use/pass CFLAGS rather than modifying CC
    -> use Berkeley DB rather than malloc() for all database ops
    -> include files should be generated from templates
    -> use nvi-style port/* hierarchy, fewer portability #ifdef's
    -> make __res static, add procedural interface to replace "extern"'ing
    -> add hesiod/yp capable versions of get{pw,serv,???}by*()
    -> add hesiod/yp to get{net,host}by*()
    -> do something like solaris' /etc/nsswitch.conf (but in resolv.conf)
    -> we should only need one copy of binary->text, text->binary, and
       packet marshalling/unmarshalling.  add general routines to -lresolv,
       and rearrange the code to use them.
    -> apps that want to do DNS queries should not have to learn res_query;
       a higher level interface should be provided, that has its own cache
       and/or shares with the server's DB-based one.
    -> implement or integrate the next round of RFC's (coming soon).

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