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 - 2012 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 # See if caller wants to invoke gdb
  23
  24 use_gdb=''
  25
  26 case ${1:-foo} in
  27   gdb*) use_gdb="$1"; shift ;;
  28 esac
  29
  30 # Save arguments (can be the usual X parameters)
  31
  32 cmd_args="$@"
  33
  34 # See if this installation is using the esoteric "USE_NODE" feature of Exim,
  35 # in which it uses the host's name as a suffix for the configuration file name.
  36
  37 if [ "CONFIGURE_FILE_USE_NODE" = "yes" ]; then
  38   hostsuffix=.`uname -n`
  39 fi
  40
  41 # Now find the configuration file name. This has got complicated because
  42 # CONFIGURE_FILE may now be a list of files. The one that is used is the first
  43 # one that exists. Mimic the code in readconf.c by testing first for the
  44 # suffixed file in each case.
  45
  46 set `awk -F: '{ for (i = 1; i <= NF; i++) print $i }' <<End
  47 CONFIGURE_FILE
  48 End
  49 `
  50 while [ "$config" = "" -a $# -gt 0 ] ; do
  51   if [ -f "$1$hostsuffix" ] ; then
  52     config="$1$hostsuffix"
  53   elif [ -f "$1" ] ; then
  54     config="$1"
  55   fi
  56   shift
  57 done
  58
  59 # Determine where the spool directory is and whether there is any setting of
  60 # log_file_path. Search for an exim_path setting in the configure file;
  61 # otherwise use the bin directory. Call that version of Exim to find the spool
  62 # directory and the setting of log_file_path.
  63
  64 config=${EXIMON_EXIM_CONFIG-$config}
  65
  66 # Add code here to redefine "config" if an alternative configuration file
  67 # should be used in some circumstances. If you do that, you should also arrange
  68 # for the value to be set in EXIMON_EXIM_CONFIG, and to export that variable
  69 # into the environment. BEWARE: a tab character is needed in the command below.
  70 # It has had a nasty tendency to get lost in the past. Use a variable to hold a
  71 # space and a tab to keep the tab in one place.
  72
  73 st='     '
  74 EXIM_PATH=`grep "^[$st]*exim_path" $config | sed "s/.*=[$st]*//"`
  75 if test "$EXIM_PATH" = ""; then EXIM_PATH=BIN_DIRECTORY/exim; fi
  76
  77 SPOOL_DIRECTORY=`$EXIM_PATH -C $config -bP spool_directory | sed 's/.*=[  ]*//'`
  78 LOG_FILE_PATH=`$EXIM_PATH -C $config -bP log_file_path | sed 's/.*=[  ]*//'`
  79
  80 # If log_file_path is "syslog" then logging is only to syslog, and the monitor
  81 # is unable to display a log tail unless EXIMON_LOG_FILE_PATH is set to tell
  82 # it where the log data is. Otherwise, remove any occurrences of
  83 # "syslog:" or ":syslog" (spaces allowed in various places) and look at the
  84 # remainder of the entry. If it's null, the default is "mainlog" in the
  85 # "log" directory in the spool directory. Otherwise, set the name from the
  86 # given path.
  87
  88 if [ "$EXIMON_LOG_FILE_PATH" != "" ] ; then
  89   LOG_FILE_NAME="$EXIMON_LOG_FILE_PATH"
  90 elif [ "$LOG_FILE_PATH" = "syslog" ] ; then
  91   LOG_FILE_NAME=""
  92   echo \*\*\*
  93   echo Exim is using the syslog interface for its log data. If you redirect all
  94   echo MAIL.INFO syslog messages into a separate file, you can point eximon at
  95   echo that file with the EXIMON_LOG_FILE_PATH environment variable.
  96   echo \*\*\*
  97 else
  98   LOG_FILE_NAME=`echo $LOG_FILE_PATH | \
  99     sed -e 's/ *: *syslog *: */:/' \
 100         -e 's/ *: *syslog *$//' \
 101         -e 's/^ *syslog *: *//' \
 102         -e 's/%s/main/'`
 103   if [ "$LOG_FILE_NAME" = "" ] ; then
 104     LOG_FILE_NAME=$SPOOL_DIRECTORY/log/mainlog
 105   fi
 106 fi
 107
 108 # The basename and hostname commands vary from system to system
 109
 110 basename=BASENAME_COMMAND
 111 hostname=HOSTNAME_COMMAND
 112
 113 # SunOS5 is a pain in that they may be in one of two places. So is Linux
 114 # in the case of basename. Set up a general mechanism for searching for
 115 # them in several places.
 116
 117 if [ "${basename}" = "look_for_it" ] ; then
 118   if [ -f /usr/bin/basename ] ; then
 119     basename=/usr/bin/basename
 120   else
 121     if [ -f /bin/basename ] ; then
 122       basename=/bin/basename
 123     else
 124       basename=/usr/ucb/basename
 125     fi
 126   fi
 127 fi
 128
 129 if [ "${hostname}" = "look_for_it" ] ; then
 130   if [ -f /usr/bin/hostname ] ; then
 131     hostname=/usr/bin/hostname
 132   else
 133     if [ -f /bin/hostname ] ; then
 134       hostname=/bin/hostname
 135     else
 136       hostname=/usr/ucb/hostname
 137     fi
 138   fi
 139 fi
 140
 141 # Set hostname to the full hostname with the specified domain
 142 # stripped off its end. On Solaris 2, the default basename
 143 # command treats its suffix argument as a pattern. Consequently,
 144 # if fullhostname contains no dots but ends with what looks like
 145 # the domain, straightforward use of basename screws things up.
 146 # Use a general test for this case, just in case any other OS
 147 # do the same.
 148
 149 fullhostname=`${hostname}`
 150 case `${basename} abc .c` in
 151   a) hostname=`${basename} ${fullhostname} '\.'${DOMAIN}` ;;
 152   *) hostname=`${basename} ${fullhostname} .${DOMAIN}` ;;
 153 esac
 154
 155
 156 # Arrange for the window title field to be substituted by the shell
 157 # so that it can contain either the full or the short host name. This
 158 # is a tedious little bit of magic, but I don't know how to do it
 159 # in a less tortuous way.
 160
 161 WINDOW_TITLE=`fullhostname=${fullhostname} hostname=${hostname} /bin/sh <<xx
 162 echo ${WINDOW_TITLE}
 163 xx
 164 `
 165
 166 # Add the X11 library to the library path, and then export the
 167 # environment variables used by eximon. The string X11-LD-LIBRARY
 168 # (with underscores, not hyphens) below is replaced by the configured
 169 # library name when the script is built. (Hyphens are used in the description
 170 # to stop it getting changed there too.)
 171
 172 X11LIB=X11_LD_LIBRARY
 173
 174 if [ "${LD_LIBRARY_PATH}" = "" ] ; then
 175   LD_LIBRARY_PATH=${X11LIB}
 176 else
 177   LD_LIBRARY_PATH=${LD_LIBRARY_PATH}:${X11LIB}
 178 fi
 179
 180 export EXIM_PATH LD_LIBRARY_PATH \
 181   LOG_BUFFER LOG_DEPTH LOG_FILE_NAME LOG_FONT LOG_WIDTH \
 182   ACTION_OUTPUT ACTION_QUEUE_UPDATE\
 183   MENU_EVENT MIN_HEIGHT MIN_WIDTH \
 184   QUALIFY_DOMAIN QUEUE_DEPTH QUEUE_FONT QUEUE_INTERVAL QUEUE_MAX_ADDRESSES \
 185   QUEUE_STRIPCHART_NAME QUEUE_TOTAL QUEUE_WIDTH SPOOL_DIRECTORY \
 186   START_DEPTH LOG_STRIPCHARTS SIZE_STRIPCHART SIZE_STRIPCHART_NAME \
 187   START_SMALL STRIPCHART_INTERVAL \
 188   TEXT_DEPTH WINDOW_TITLE
 189
 190 # Exec to the program we really want to run, thereby continuing in
 191 # just the one process, and let it run in parallel with whatever
 192 # called this script (unless gdb was requested in original $1).
 193
 194 if [ "${use_gdb:-}" = "" ] ; then
 195   exec "${EXIMON_BINARY}" $cmd_args &
 196 else
 197   exec "$use_gdb" "${EXIMON_BINARY}" $cmd_args
 198   # not backgrounded
 199 fi
 200
 201 # End