src/src/eximon.src

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