Since net-server.c now uses libverto, only sendto_kdc.c consumes cm.c.
Move stuff out of cm.c and cm.h into sendto_kdc.c and get rid of them.
Change the sendto_kdc callback (used by chpw.c) to receive the socket
descriptor instead of the entire conn_state structure, and move the
declarations into os-proto.h.  struct remote_address also needs to be
in os-proto.h so that trace.c and t_trace.c can use it.  k5_curtime
isn't needed since k5-platform.h now guarantees the presence of
gettimeofday().

In struct conn_state, collect together the fields for the remote
address and put them in a substructure.  Pass this substructure to
trace logging macros instead of the entire conn_state structure, so
that trace.c doesn't have to know about the whole structure.

large numbers of open files.  Move krb5int_cm_call_select() to a
separate file so that the poll support doesn't interfere with
net-server.c's continuing use of select.

ticket: 6905

git-svn-id: svn://anonsvn.mit.edu/krb5/trunk@24908 dc483132-0cff-0310-8789-dd5450dbe970

and license comments.

git-svn-id: svn://anonsvn.mit.edu/krb5/trunk@24695 dc483132-0cff-0310-8789-dd5450dbe970

Restructure the locate_kdc and sendto_kdc code to defer getaddrinfo
calls until we need the answer.  This requires many changes:

* struct addrlist is now called struct serverlist, and is declared in
  os-proto.h instead of k5-int.h.  It contains an array of struct
  server_entry structures which can hold either a name or an address.
  (Address entries are used for locate_kdc module results.)

* The connection state list is now a linked list, and holds address
  information directly instead of using a struct addrinfo (this
  simplifies memory management).  Each connection entry contains a
  callback buffer (previously stored in a separate array) and an index
  into the server list.

* The {addrstate} trace formatting primitive is no longer needed, and
  has been replaced by {connstate}.  There is also a new tracing event
  for resolving hostnames.

* locate_server, locate_kdc, free_serverlist, and sendto get their
  prefixes changed from krb5int_ to k5_ as their prototypes were being
  adjusted anyway.  The family argument is gone from the locate
  functions as it was never productively used.  k5_sendto now receives
  the socket types of interest.

* krb5_sendto_kdc will now pass a 0 socktype to k5_locate_kdc if both
  socket types are wanted.  There were some allowances for this in
  locate but this was never previously done.  In order to be
  conservative when invoking locate modules, we always pass an
  explicit socktype, thus calling lookup twice (as we did before,
  albeit with a separate init/fini cycle) in the common case.  When
  creating hostname entries in serverlist from profile configuration,
  we preserve the 0 value of socktype, and later create both TCP and
  UDP addresses from the getaddrinfo results when the host is
  resolved.

* Some accessor functions previously used by libkrb4 have been removed
  as they impinged upon this work.

ticket: 6868

git-svn-id: svn://anonsvn.mit.edu/krb5/trunk@24635 dc483132-0cff-0310-8789-dd5450dbe970

Add trace logging infrastructure code, enabled by the KRB5_TRACE
environment variable or the API functions krb5_set_trace_callback()
or krb5_set_trace_filename().  As a start, add tracing events for:
  * AS-REQ client code, including FAST and preauth
  * TGS-REQ client code
  * AP-REQ and AP-REP code (client and server)
  * sendto_kdc
  * Selected ccache operations
  * Selected keytab operations

ticket: 6737

git-svn-id: svn://anonsvn.mit.edu/krb5/trunk@24118 dc483132-0cff-0310-8789-dd5450dbe970

Exclude include/gssrpc due to its Sun origin and k5-platform.h due to
macros too hairy for emacs c-mode to handle.

git-svn-id: svn://anonsvn.mit.edu/krb5/trunk@23180 dc483132-0cff-0310-8789-dd5450dbe970

make reindent

git-svn-id: svn://anonsvn.mit.edu/krb5/trunk@23100 dc483132-0cff-0310-8789-dd5450dbe970

* include/cm.h (state_strings, enum conn_states, struct incoming_krb5_message,
struct conn_state): Moved here from lib/krb5/os/sendto_kdc.c.
(stuct sendto_callback_info): New type.
* lib/krb5/os/sendto_kdc.c (set_conn_state_msg_length): New function.
(setup_connection): Deleted argument message_len_buf.  Don't store message
length; call set_conn_state_msg_length instead.
(start_connection): New arguments callback_info and callback_buffer.  Invoke
callback function if any, and set message length on success.
(maybe_send): New arguments callback_info and callback_buffer; pass them to
start_connection.
(krb5int_sendto): New arguments callback_info, remoteaddr, remoteaddrlen.  If
callback info is provided, allocate per-connection buffers, and pass them to
maybe_send.  On cleanup, invoke the cleanup callback function if any.
(krb5_sendto_kdc): Update krb5int_sendto call.
* include/k5-int.h (struct sendto_callback_info): Add forward declaration.
(krb5int_sendto, struct _krb5int_access.sendto_udp): Update for new signature.
* lib/krb5/os/send524 (krb5int_524_sendto_kdc): Update krb5int_sendto call.
* lib/krb4/send_to_kdc.c (krb5int_send_to_kdc_addr): Update sendto_udp call.

* lib/krb5/os/changepw.c (struct sendto_callback_context): New type.
(krb5_locate_kpasswd): New argument useTcp, used to select socket type in
krb5int_locate_server call.
(kpasswd_sendto_msg_cleanup, kpasswd_sendto_msg_callback): New functions.
(krb5_change_set_password): Call krb5int_sendto with callbacks, instead of
managing the exchange here.  On RESPONSE_TOO_BIG error, try again with TCP
only.

* lib/krb5/krb/chpw.c (krb5int_rd_chpw_rep): If length is wrong, check if a
buggy server sent a KRB_ERROR.

git-svn-id: svn://anonsvn.mit.edu/krb5/trunk@18518 dc483132-0cff-0310-8789-dd5450dbe970

git-svn-id: svn://anonsvn.mit.edu/krb5/trunk@17233 dc483132-0cff-0310-8789-dd5450dbe970