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 - 2015 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 $config -bP log_file_path | sed 's/.*=[  ]*//'`
  79
  80 # If log_file_path is "syslog" then logging is only to syslog, and the monitor
  81 # is unable to display a log tail unless EXIMON_LOG_FILE_PATH is set to tell
  82 # it where the log data is. If log_file_path is unset (i.e. empty) the default
  83 # is "mainlog" in the "log" directory in the spool directory. Otherwise,
  84 # remove any occurrences of "syslog:" or ":syslog" (spaces allowed in various
  85 # places) and look at the remainder of the entry. If it's null, check whether
  86 # LOG_FILE_NAME was set a compile time and contains a path. Otherwise fall
  87 # back to the default path.
  88
  89 if [ "$EXIMON_LOG_FILE_PATH" != "" ] ; then
  90   LOG_FILE_NAME="$EXIMON_LOG_FILE_PATH"
  91 elif [ "$LOG_FILE_PATH" = "syslog" ] ; then
  92   LOG_FILE_NAME=""
  93   echo \*\*\*
  94   echo Exim is using the syslog interface for its log data. If you redirect all
  95   echo MAIL.INFO syslog messages into a separate file, you can point eximon at
  96   echo that file with the EXIMON_LOG_FILE_PATH environment variable.
  97   echo \*\*\*
  98 elif [ "$LOG_FILE_PATH" = "" ] ; then
  99     LOG_FILE_NAME=$SPOOL_DIRECTORY/log/mainlog
 100 else
 101   LOG_FILE_NAME=`echo $LOG_FILE_PATH | \
 102     sed -e 's/ *: *syslog *: */:/' \
 103         -e 's/ *: *syslog *$//' \
 104         -e 's/^ *syslog *: *//' \
 105         -e 's/%s/main/'`
 106   if [ "$LOG_FILE_NAME" = "" ] ; then
 107     COMPILETIMEDEFAULT=`$EXIM_PATH -C /dev/null -bP log_file_path | \
 108       sed -e 's/.*=[  ]*//' \
 109         -e 's/ *: *syslog *: */:/' \
 110         -e 's/ *: *syslog *$//' \
 111         -e 's/^ *syslog *: *//' \
 112         -e 's/%s/main/'`
 113     if [ "$COMPILETIMEDEFAULT" != "" ] ; then
 114       LOG_FILE_NAME="$COMPILETIMEDEFAULT"
 115     else
 116       LOG_FILE_NAME=$SPOOL_DIRECTORY/log/mainlog
 117     fi
 118   fi
 119 fi
 120
 121 # The basename and hostname commands vary from system to system
 122
 123 basename=BASENAME_COMMAND
 124 hostname=HOSTNAME_COMMAND
 125
 126 # SunOS5 is a pain in that they may be in one of two places. So is Linux
 127 # in the case of basename. Set up a general mechanism for searching for
 128 # them in several places.
 129
 130 if [ "${basename}" = "look_for_it" ] ; then
 131   if [ -f /usr/bin/basename ] ; then
 132     basename=/usr/bin/basename
 133   else
 134     if [ -f /bin/basename ] ; then
 135       basename=/bin/basename
 136     else
 137       basename=/usr/ucb/basename
 138     fi
 139   fi
 140 fi
 141
 142 if [ "${hostname}" = "look_for_it" ] ; then
 143   if [ -f /usr/bin/hostname ] ; then
 144     hostname=/usr/bin/hostname
 145   else
 146     if [ -f /bin/hostname ] ; then
 147       hostname=/bin/hostname
 148     else
 149       hostname=/usr/ucb/hostname
 150     fi
 151   fi
 152 fi
 153
 154 # Set hostname to the full hostname with the specified domain
 155 # stripped off its end. On Solaris 2, the default basename
 156 # command treats its suffix argument as a pattern. Consequently,
 157 # if fullhostname contains no dots but ends with what looks like
 158 # the domain, straightforward use of basename screws things up.
 159 # Use a general test for this case, just in case any other OS
 160 # do the same.
 161
 162 fullhostname=`${hostname}`
 163 case `${basename} abc .c` in
 164   a) hostname=`${basename} ${fullhostname} '\.'${DOMAIN}` ;;
 165   *) hostname=`${basename} ${fullhostname} .${DOMAIN}` ;;
 166 esac
 167
 168
 169 # Arrange for the window title field to be substituted by the shell
 170 # so that it can contain either the full or the short host name. This
 171 # is a tedious little bit of magic, but I don't know how to do it
 172 # in a less tortuous way.
 173
 174 WINDOW_TITLE=`fullhostname=${fullhostname} hostname=${hostname} /bin/sh <<xx
 175 echo ${WINDOW_TITLE}
 176 xx
 177 `
 178
 179 # Add the X11 library to the library path, and then export the
 180 # environment variables used by eximon. The string X11-LD-LIBRARY
 181 # (with underscores, not hyphens) below is replaced by the configured
 182 # library name when the script is built. (Hyphens are used in the description
 183 # to stop it getting changed there too.)
 184
 185 X11LIB=X11_LD_LIBRARY
 186
 187 if [ "${LD_LIBRARY_PATH}" = "" ] ; then
 188   LD_LIBRARY_PATH=${X11LIB}
 189 else
 190   LD_LIBRARY_PATH=${LD_LIBRARY_PATH}:${X11LIB}
 191 fi
 192
 193 export EXIM_PATH LD_LIBRARY_PATH \
 194   LOG_BUFFER LOG_DEPTH LOG_FILE_NAME LOG_FONT LOG_WIDTH \
 195   ACTION_OUTPUT ACTION_QUEUE_UPDATE\
 196   MENU_EVENT MIN_HEIGHT MIN_WIDTH \
 197   QUALIFY_DOMAIN QUEUE_DEPTH QUEUE_FONT QUEUE_INTERVAL QUEUE_MAX_ADDRESSES \
 198   QUEUE_STRIPCHART_NAME QUEUE_TOTAL QUEUE_WIDTH SPOOL_DIRECTORY \
 199   START_DEPTH LOG_STRIPCHARTS SIZE_STRIPCHART SIZE_STRIPCHART_NAME \
 200   START_SMALL STRIPCHART_INTERVAL \
 201   TEXT_DEPTH WINDOW_TITLE
 202
 203 # Exec to the program we really want to run, thereby continuing in
 204 # just the one process, and let it run in parallel with whatever
 205 # called this script (unless gdb was requested in original $1).
 206
 207 if [ "${use_gdb:-}" = "" ] ; then
 208   exec "${EXIMON_BINARY}" $cmd_args &
 209 else
 210   exec "$use_gdb" "${EXIMON_BINARY}" $cmd_args
 211   # not backgrounded
 212 fi
 213
 214 # End