- Fix by Tofu Linden:

  Changelog for the c-ares project

* Aug 4 2008 (Daniel Stenberg)

- Fix by Tofu Linden:

  The symptom:

  * Users (usually, but not always) on 2-Wire routers and the Comcast service

  and a wired connection to their router would find that the second and

  subsequent DNS lookups from fresh processes using c-ares to resolve the same

  address would cause the process to never see a reply (it keeps polling for

  around 1m15s before giving up).

  The repro:

  * On such a machine (and yeah, it took us a lot of QA to find the systems

  that reproduce such a specific problem!), do 'ahost www.secondlife.com',

  then do it again.  The first process's lookup will work, subsequent lookups

  will time-out and fail.

  The cause:

  * init_id_key() was calling randomize_key() *before* it initialized

  key->state, meaning that the randomness generated by randomize_key() is

  immediately overwritten with deterministic values. (/dev/urandom was also

  being read incorrectly in the c-ares version we were using, but this was

  fixed in a later version.)

  * This makes the stream of generated query-IDs from any new c-ares process

  be an identical and predictable sequence of IDs.

  * This makes the 2-Wire's default built-in DNS server detect these queries

  as probable-duplicates and (erroneously) not respond at all.

* Aug 4 2008 (Yang Tse)

- Autoconf 2.62 has changed the behaviour of the AC_AIX macro which we use.

  Prior versions of autoconf defined _ALL_SOURCE if _AIX was defined. 2.62

 o configure process no longer needs nor checks size of curl_off_t

 o library will now be built with _REENTRANT symbol defined if needed

 o Improved configure detection of number of arguments for getservbyport_r

 o Improved query-ID randomness

Thanks go to these friendly people for their efforts and contributions:

 Brad House, Yang Tse, Phil Blundell

 Brad House, Yang Tse, Phil Blundell, Tofu Linden

 and obviously Daniel Stenberg

Have fun!

  if (!key_data_ptr)

    return ARES_ENOMEM;

  randomize_key(key->state,key_data_len);

  state = &key->state[0];

  for(counter = 0; counter < 256; counter++)

    /* unnecessary AND but it keeps some compilers happier */

    state[counter] = (unsigned char)(counter & 0xff);

  randomize_key(key->state,key_data_len);

  key->x = 0;

  key->y = 0;

  index1 = 0;