src/src/eximon.src

   1 # $Cambridge: exim/src/src/eximon.src,v 1.1 2004/10/07 10:39:01 ph10 Exp $
   2
   3 # Base source of start-up shell script for the Exim Monitor. Used to set the
   4 # required environment variables before running the program. Using script
   5 # rather than a configuration file means that computation can be done.
   6 # The build process concatenates on the front of this various settings from
   7 # os-specific files and from the user's configuration file.
   8
   9 # Copyright (c) 2004 University of Cambridge.
  10 # See the file NOTICE for conditions of use and distribution.
  11
  12 # Except when they appear in comments, the following placeholders in this
  13 # source are replaced when it is turned into a runnable script:
  14 #
  15 # CONFIGURE_FILE_USE_NODE
  16 # CONFIGURE_FILE
  17 # BIN_DIRECTORY
  18 # BASENAME_COMMAND
  19 # HOSTNAME_COMMAND
  20 # X11_LD_LIBRARY
  21
  22 # PROCESSED_FLAG
  23
  24 # Save arguments (can be the usual X parameters)
  25
  26 cmd_args="$@"
  27
  28 # See if this installation is using the esoteric "USE_NODE" feature of Exim,
  29 # in which it uses the host's name as a suffix for the configuration file name.
  30
  31 if [ "CONFIGURE_FILE_USE_NODE" = "yes" ]; then
  32   hostsuffix=.`uname -n`
  33 fi
  34
  35 # Now find the configuration file name. This has got complicated because
  36 # CONFIGURE_FILE may now be a list of files. The one that is used is the first
  37 # one that exists. Mimic the code in readconf.c by testing first for the
  38 # suffixed file in each case.
  39
  40 set `awk -F: '{ for (i = 1; i <= NF; i++) print $i }' <<End
  41 CONFIGURE_FILE
  42 End
  43 `
  44 while [ "$config" = "" -a $# -gt 0 ] ; do
  45   if [ -f "$1$hostsuffix" ] ; then
  46     config="$1$hostsuffix"
  47   elif [ -f "$1" ] ; then
  48     config="$1"
  49   fi
  50   shift
  51 done
  52
  53 # Determine where the spool directory is and whether there is any setting of
  54 # log_file_path. Search for an exim_path setting in the configure file;
  55 # otherwise use the bin directory. Call that version of Exim to find the spool
  56 # directory and the setting of log_file_path.
  57
  58 config=${EXIMON_EXIM_CONFIG-$config}
  59
  60 # Add code here to redefine "config" if an alternative configuration file
  61 # should be used in some circumstances. If you do that, you should also arrange
  62 # for the value to be set in EXIMON_EXIM_CONFIG, and to export that variable
  63 # into the environment. BEWARE: a tab character is needed in the command below.
  64 # It has had a nasty tendency to get lost in the past. Use a variable to hold a
  65 # space and a tab to keep the tab in one place.
  66
  67 st='     '
  68 EXIM_PATH=`grep "^[$st]*exim_path" $config | sed "s/.*=[$st]*//"`
  69 if test "$EXIM_PATH" = ""; then EXIM_PATH=BIN_DIRECTORY/exim; fi
  70
  71 SPOOL_DIRECTORY=`$EXIM_PATH -C $config -bP spool_directory | sed 's/.*=[  ]*//'`
  72 LOG_FILE_PATH=`$EXIM_PATH -C $config -bP log_file_path | sed 's/.*=[  ]*//'`
  73
  74 # If log_file_path is "syslog" then logging is only to syslog, and the monitor
  75 # is unable to display a log tail unless EXIMON_LOG_FILE_PATH is set to tell
  76 # it where the log data is. Otherwise, remove any occurrences of
  77 # "syslog:" or ":syslog" (spaces allowed in various places) and look at the
  78 # remainder of the entry. If it's null, the default is "mainlog" in the
  79 # "log" directory in the spool directory. Otherwise, set the name from the
  80 # given path.
  81
  82 if [ "$EXIMON_LOG_FILE_PATH" != "" ] ; then
  83   LOG_FILE_NAME="$EXIMON_LOG_FILE_PATH"
  84 elif [ "$LOG_FILE_PATH" = "syslog" ] ; then
  85   LOG_FILE_NAME=""
  86   echo \*\*\*
  87   echo Exim is using the syslog interface for its log data. If you redirect all
  88   echo MAIL.INFO syslog messages into a separate file, you can point eximon at
  89   echo that file with the EXIMON_LOG_FILE_PATH environment variable.
  90   echo \*\*\*
  91 else
  92   LOG_FILE_NAME=`echo $LOG_FILE_PATH | \
  93     sed -e 's/ *: *syslog *: */:/' \
  94         -e 's/ *: *syslog *$//' \
  95         -e 's/^ *syslog *: *//' \
  96         -e 's/%s/main/'`
  97   if [ "$LOG_FILE_NAME" = "" ] ; then
  98     LOG_FILE_NAME=$SPOOL_DIRECTORY/log/mainlog
  99   fi
 100 fi
 101
 102 # The basename and hostname commands vary from system to system
 103
 104 basename=BASENAME_COMMAND
 105 hostname=HOSTNAME_COMMAND
 106
 107 # SunOS5 is a pain in that they may be in one of two places. So is Linux
 108 # in the case of basename. Set up a general mechanism for searching for
 109 # them in several places.
 110
 111 if [ "${basename}" = "look_for_it" ] ; then
 112   if [ -f /usr/bin/basename ] ; then
 113     basename=/usr/bin/basename
 114   else
 115     if [ -f /bin/basename ] ; then
 116       basename=/bin/basename
 117     else
 118       basename=/usr/ucb/basename
 119     fi
 120   fi
 121 fi
 122
 123 if [ "${hostname}" = "look_for_it" ] ; then
 124   if [ -f /usr/bin/hostname ] ; then
 125     hostname=/usr/bin/hostname
 126   else
 127     if [ -f /bin/hostname ] ; then
 128       hostname=/bin/hostname
 129     else
 130       hostname=/usr/ucb/hostname
 131     fi
 132   fi
 133 fi
 134
 135 # Set hostname to the full hostname with the specified domain
 136 # stripped off its end. On Solaris 2, the default basename
 137 # command treats its suffix argument as a pattern. Consequently,
 138 # if fullhostname contains no dots but ends with what looks like
 139 # the domain, straightforward use of basename screws things up.
 140 # Use a general test for this case, just in case any other OS
 141 # do the same.
 142
 143 fullhostname=`${hostname}`
 144 case `${basename} abc .c` in
 145   a) hostname=`${basename} ${fullhostname} '\.'${DOMAIN}` ;;
 146   *) hostname=`${basename} ${fullhostname} .${DOMAIN}` ;;
 147 esac
 148
 149
 150 # Arrange for the window title field to be substituted by the shell
 151 # so that it can contain either the full or the short host name. This
 152 # is a tedious little bit of magic, but I don't know how to do it
 153 # in a less tortuous way.
 154
 155 WINDOW_TITLE=`fullhostname=${fullhostname} hostname=${hostname} /bin/sh <<xx
 156 echo ${WINDOW_TITLE}
 157 xx
 158 `
 159
 160 # Add the X11 library to the library path, and then export the
 161 # environment variables used by eximon. The string X11-LD-LIBRARY
 162 # (with underscores, not hyphens) below is replaced by the configured
 163 # library name when the script is built. (Hyphens are used in the description
 164 # to stop it getting changed there too.)
 165
 166 X11LIB=X11_LD_LIBRARY
 167
 168 if [ "${LD_LIBRARY_PATH}" = "" ] ; then
 169   LD_LIBRARY_PATH=${X11LIB}
 170 else
 171   LD_LIBRARY_PATH=${LD_LIBRARY_PATH}:${X11LIB}
 172 fi
 173
 174 export EXIM_PATH LD_LIBRARY_PATH \
 175   LOG_BUFFER LOG_DEPTH LOG_FILE_NAME LOG_FONT LOG_WIDTH \
 176   ACTION_OUTPUT ACTION_QUEUE_UPDATE\
 177   MENU_EVENT MIN_HEIGHT MIN_WIDTH \
 178   QUALIFY_DOMAIN QUEUE_DEPTH QUEUE_FONT QUEUE_INTERVAL QUEUE_MAX_ADDRESSES \
 179   QUEUE_STRIPCHART_NAME QUEUE_TOTAL QUEUE_WIDTH SPOOL_DIRECTORY \
 180   START_DEPTH LOG_STRIPCHARTS SIZE_STRIPCHART SIZE_STRIPCHART_NAME \
 181   START_SMALL STRIPCHART_INTERVAL \
 182   TEXT_DEPTH WINDOW_TITLE
 183
 184 # Exec to the program we really want to run, thereby continuing in
 185 # just the one process, and let it run in parallel with whatever
 186 # called this script.
 187
 188 exec ${EXIMON_BINARY} $cmd_args &
 189
 190 # End