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NAME
     ttauth - TT authority file utility

SYNOPSIS
     ttauth [ -f authfile ] [ -vqib ] [ command arg ... ]

DESCRIPTION
     The ttauth program is used to edit and display the  authori-
     zation  information  used in connecting with Tooltalk.  This
     program is usually used  to  extract  authorization  records
     from  one  machine  and  merge them in on another (as is the
     case when using remote logins or granting  access  to  other
     users).   Commands (described below) may be entered interac-
     tively, on the ttauth command line, or in scripts.

OPTIONS
     The following options may be used with ttauth. They  may  be
     given individually (e.g. -q -i) or may combined (e.g. -qi):

     -f authfile
             This option specifies the name of the authority file
             to use.  By default, ttauth will use the file speci-
             fied by  the  TTAUTHORITY  environment  variable  or
             .TTauthority in the user's home directory.

     -q      This option indicates  that  ttauth  should  operate
             quietly  and  not print unsolicited status messages.
             This is the default if an ttauth command is is given
             on the command line or if the standard output is not
             directed to a terminal.

     -v      This option indicates  that  ttauth  should  operate
             verbosely  and  print status messages indicating the
             results of various operations (e.g. how many records
             have  been  read  in  or  written out).  This is the
             default if ttauth is reading commands from its stan-
             dard  input and its standard output is directed to a
             terminal.

     -i      This option indicates that ttauth should ignore  any
             authority  file locks.  Normally, ttauth will refuse
             to read or edit any authority files that  have  been
             locked  by other programs (usually xdm(1) or another
             ttauth).

     -b      This option indicates that ttauth should attempt  to
             break any authority file locks before proceeding and
             should only be used to clean up stale locks.

COMMANDS
     The following commands may be used to  manipulate  authority
     files:
     add displayname protocolname hexkey
             An authorization entry  for  the  indicated  display
             using  the  given  protocol and key data is added to
             the authorization file.  The data is specified as an
             even-lengthed  string  of  hexadecimal  digits, each
             pair representing one octet.   The  first  digit  of
             each  pair  gives the most significant 4 bits of the
             octet and the second  digit  of  the  pairgives  the
             least significant 4 bits.  For example, a 32 charac-
             ter hexkey would represent a 128-bit value.  A  pro-
             tocol  name  consisting  of  just a single period is
             treated as an abbreviation for MIT-MAGIC-COOKIE-1.

     add displayname protocolname 'string'
             An authorization entry  for  the  indicated  display
             using  the  given  protocol  and the protocolname is
             specified by 'string'.  If the authorization name is
             UN_DE-1,  then the data field contains an ASCII net-
             name.

     [n]extract filename displayname...
             Authorization entries  for  each  of  the  specified
             displays  are written to the indicated file.  If the
             nextract command is used, the entries are written in
             a  numeric  format suitable for non-binary transmis-
             sion  (such  as  secure   electronic   mail).    The
             extracted  entries  can  be  read  back in using the
             merge and nmerge commands.  If the the filename con-
             sists  of  just  a  single dash, the entries will be
             written to the standard output.

     [n]list [displayname...]
             Authorization entries  for  each  of  the  specified
             displays  (or  all  if  no  displays  are named) are
             printed on the standard output.  If the  nlist  com-
             mand  is  used, entries will be shown in the numeric
             format used by the nextract command; otherwise, they
             are  shown  in a textual format.  Key data is always
             displayed in the hexadecimal  format  given  in  the
             description of the add command.

     [n]merge [filename...]
             Authorization entries are read  from  the  specified
             files  and  are  merged into the authorization data-
             base, superceding any matching existing entries.  If
             the nmerge command is used, the numeric format given
             in the description of the extract command  is  used.
             If  a  filename  consists of just a single dash, the
             standard input will be read if it hasn't  been  read
             before.

     remove displayname...
             Authorization   entries   matching   the   specified
             displays are removed from the authority file.

     source filename
             The specified file is treated as a script containing
             ttauth  commands  to execute.  Blank lines and lines
             beginning with a sharp sign (#) are ignored.  A sin-
             gle dash may be used to indicate the standard input,
             if it hasn't already been read.

     info    Information  describing  the   authorization   file,
             whether  or not any changes have been made, and from
             where ttauth commands are being read is  printed  on
             the standard output.

     exit    If any modifications have been made,  the  authority
             file  is  written  out (if allowed), and the program
             exits.  An end of file is  treated  as  an  implicit
             exit command.

     quit    The program exits, ignoring any modifications.  This
             may  also  be accomplished by pressing the interrupt
             character.

     help [string]
             A description of all commands that  begin  with  the
             given string (or all commands if no string is given)
             is printed on the standard output.

     ?       A short list of the valid commands is printed on the
             standard output.

DISPLAY NAMES
     Display names for the add,  [n]extract,  [n]list,  [n]merge,
     and  remove  commands  use  the  same  format as the DISPLAY
     environment variable and the common  -display  command  line
     argument.   Display-specific information (such as the screen
     number) is unnecessary and will  be  ignored.   Same-machine
     connections  (such as local-host sockets, shared memory, and
     the Internet Protocol hostname localhost) are referred to as
     hostname/unix:displaynumber  so  that local entries for dif-
     ferent machines may be stored in one authority file.

ENVIRONMENT
     This ttauth program uses  the  following  environment  vari-
     ables:

     TTAUTHORITY
             to get the name of the authority file to use if  the
             -f  option isn't used.  If this variable is not set,
             ttauth will use  .TTauthority  in  the  user's  home
             directory.

     HOME    to get the  user's  home  directory  if  TTAUTHORITY
             isn't defined.

BUGS
     Users that have unsecure networks should take  care  to  use
     encrypted  file  transfer  mechanisms  to copy authorization
     entries between machines. Similarly, the  MIT-MAGIC-COOKIE-1
     protocol is not very useful in unsecure environments.  Sites
     that are interested in additional security may need  to  use
     encrypted authorization mechanisms such as Kerberos.

     Spaces are currently  not  allowed  in  the  protocol  name.
     Quoting could be added for the truly perverse.

EXAMPLES
     None.

AUTHOR
     Mitchell Greess, Solutions Atlantic

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