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 if test "x$1" = x--version
  23 then
  24     echo "`basename $0`: $0"
  25     echo "build: EXIM_RELEASE_VERSIONEXIM_VARIANT_VERSION"
  26     exit 0
  27 fi
  28
  29 # See if caller wants to invoke gdb
  30
  31 use_gdb=''
  32
  33 case ${1:-foo} in
  34   gdb*) use_gdb="$1"; shift ;;
  35 esac
  36
  37 # Save arguments (can be the usual X parameters)
  38
  39 cmd_args="$@"
  40
  41 # See if this installation is using the esoteric "USE_NODE" feature of Exim,
  42 # in which it uses the host's name as a suffix for the configuration file name.
  43
  44 if [ "CONFIGURE_FILE_USE_NODE" = "yes" ]; then
  45   hostsuffix=.`uname -n`
  46 fi
  47
  48 # Now find the configuration file name. This has got complicated because
  49 # CONFIGURE_FILE may now be a list of files. The one that is used is the first
  50 # one that exists. Mimic the code in readconf.c by testing first for the
  51 # suffixed file in each case.
  52
  53 set `awk -F: '{ for (i = 1; i <= NF; i++) print $i }' <<End
  54 CONFIGURE_FILE
  55 End
  56 `
  57 while [ "$config" = "" -a $# -gt 0 ] ; do
  58   if [ -f "$1$hostsuffix" ] ; then
  59     config="$1$hostsuffix"
  60   elif [ -f "$1" ] ; then
  61     config="$1"
  62   fi
  63   shift
  64 done
  65
  66 # Determine where the spool directory is and whether there is any setting of
  67 # log_file_path. Search for an exim_path setting in the configure file;
  68 # otherwise use the bin directory. Call that version of Exim to find the spool
  69 # directory and the setting of log_file_path.
  70
  71 config=${EXIMON_EXIM_CONFIG-$config}
  72
  73 # Add code here to redefine "config" if an alternative configuration file
  74 # should be used in some circumstances. If you do that, you should also arrange
  75 # for the value to be set in EXIMON_EXIM_CONFIG, and to export that variable
  76 # into the environment. BEWARE: a tab character is needed in the command below.
  77 # It has had a nasty tendency to get lost in the past. Use a variable to hold a
  78 # space and a tab to keep the tab in one place.
  79
  80 st='     '
  81 EXIM_PATH=`grep "^[$st]*exim_path" $config | sed "s/.*=[$st]*//"`
  82 if test "$EXIM_PATH" = ""; then EXIM_PATH=BIN_DIRECTORY/exim; fi
  83
  84 SPOOL_DIRECTORY=`$EXIM_PATH -C $config -bP spool_directory | sed 's/.*=[  ]*//'`
  85 LOG_FILE_PATH=`$EXIM_PATH -C $config -bP log_file_path | sed 's/.*=[  ]*//'`
  86
  87 # If log_file_path is "syslog" then logging is only to syslog, and the monitor
  88 # is unable to display a log tail unless EXIMON_LOG_FILE_PATH is set to tell
  89 # it where the log data is. If log_file_path is unset (i.e. empty) the default
  90 # is "mainlog" in the "log" directory in the spool directory. Otherwise,
  91 # remove any occurrences of "syslog:" or ":syslog" (spaces allowed in various
  92 # places) and look at the remainder of the entry. If it's null, check whether
  93 # LOG_FILE_NAME was set a compile time and contains a path. Otherwise fall
  94 # back to the default path.
  95
  96 if [ "$EXIMON_LOG_FILE_PATH" != "" ] ; then
  97   LOG_FILE_NAME="$EXIMON_LOG_FILE_PATH"
  98 elif [ "$LOG_FILE_PATH" = "syslog" ] ; then
  99   LOG_FILE_NAME=""
 100   echo \*\*\*
 101   echo Exim is using the syslog interface for its log data. If you redirect all
 102   echo MAIL.INFO syslog messages into a separate file, you can point eximon at
 103   echo that file with the EXIMON_LOG_FILE_PATH environment variable.
 104   echo \*\*\*
 105 elif [ "$LOG_FILE_PATH" = "" ] ; then
 106     LOG_FILE_NAME=$SPOOL_DIRECTORY/log/mainlog
 107 else
 108   LOG_FILE_NAME=`echo $LOG_FILE_PATH | \
 109     sed -e 's/ *: *syslog *: */:/' \
 110         -e 's/ *: *syslog *$//' \
 111         -e 's/^ *syslog *: *//' \
 112         -e 's/%s/main/'`
 113   if [ "$LOG_FILE_NAME" = "" ] ; then
 114     COMPILETIMEDEFAULT=`$EXIM_PATH -C /dev/null -bP log_file_path | \
 115       sed -e 's/.*=[  ]*//' \
 116         -e 's/ *: *syslog *: */:/' \
 117         -e 's/ *: *syslog *$//' \
 118         -e 's/^ *syslog *: *//' \
 119         -e 's/%s/main/'`
 120     if [ "$COMPILETIMEDEFAULT" != "" ] ; then
 121       LOG_FILE_NAME="$COMPILETIMEDEFAULT"
 122     else
 123       LOG_FILE_NAME=$SPOOL_DIRECTORY/log/mainlog
 124     fi
 125   fi
 126 fi
 127
 128 # The basename and hostname commands vary from system to system
 129
 130 basename=BASENAME_COMMAND
 131 hostname=HOSTNAME_COMMAND
 132
 133 # SunOS5 is a pain in that they may be in one of two places. So is Linux
 134 # in the case of basename. Set up a general mechanism for searching for
 135 # them in several places.
 136
 137 if [ "${basename}" = "look_for_it" ] ; then
 138   if [ -f /usr/bin/basename ] ; then
 139     basename=/usr/bin/basename
 140   else
 141     if [ -f /bin/basename ] ; then
 142       basename=/bin/basename
 143     else
 144       basename=/usr/ucb/basename
 145     fi
 146   fi
 147 fi
 148
 149 if [ "${hostname}" = "look_for_it" ] ; then
 150   if [ -f /usr/bin/hostname ] ; then
 151     hostname=/usr/bin/hostname
 152   else
 153     if [ -f /bin/hostname ] ; then
 154       hostname=/bin/hostname
 155     else
 156       hostname=/usr/ucb/hostname
 157     fi
 158   fi
 159 fi
 160
 161 # Set hostname to the full hostname with the specified domain
 162 # stripped off its end. On Solaris 2, the default basename
 163 # command treats its suffix argument as a pattern. Consequently,
 164 # if fullhostname contains no dots but ends with what looks like
 165 # the domain, straightforward use of basename screws things up.
 166 # Use a general test for this case, just in case any other OS
 167 # do the same.
 168
 169 fullhostname=`${hostname}`
 170 case `${basename} abc .c` in
 171   a) hostname=`${basename} ${fullhostname} '\.'${DOMAIN}` ;;
 172   *) hostname=`${basename} ${fullhostname} .${DOMAIN}` ;;
 173 esac
 174
 175
 176 # Arrange for the window title field to be substituted by the shell
 177 # so that it can contain either the full or the short host name. This
 178 # is a tedious little bit of magic, but I don't know how to do it
 179 # in a less tortuous way.
 180
 181 WINDOW_TITLE=`fullhostname=${fullhostname} hostname=${hostname} /bin/sh <<xx
 182 echo ${WINDOW_TITLE}
 183 xx
 184 `
 185
 186 # Add the X11 library to the library path, and then export the
 187 # environment variables used by eximon. The string X11-LD-LIBRARY
 188 # (with underscores, not hyphens) below is replaced by the configured
 189 # library name when the script is built. (Hyphens are used in the description
 190 # to stop it getting changed there too.)
 191
 192 X11LIB=X11_LD_LIBRARY
 193
 194 if [ "${LD_LIBRARY_PATH}" = "" ] ; then
 195   LD_LIBRARY_PATH=${X11LIB}
 196 else
 197   LD_LIBRARY_PATH=${LD_LIBRARY_PATH}:${X11LIB}
 198 fi
 199
 200 export EXIM_PATH LD_LIBRARY_PATH \
 201   LOG_BUFFER LOG_DEPTH LOG_FILE_NAME LOG_FONT LOG_WIDTH \
 202   ACTION_OUTPUT ACTION_QUEUE_UPDATE\
 203   MENU_EVENT MIN_HEIGHT MIN_WIDTH \
 204   QUALIFY_DOMAIN QUEUE_DEPTH QUEUE_FONT QUEUE_INTERVAL QUEUE_MAX_ADDRESSES \
 205   QUEUE_STRIPCHART_NAME QUEUE_TOTAL QUEUE_WIDTH SPOOL_DIRECTORY \
 206   START_DEPTH LOG_STRIPCHARTS SIZE_STRIPCHART SIZE_STRIPCHART_NAME \
 207   START_SMALL STRIPCHART_INTERVAL \
 208   TEXT_DEPTH WINDOW_TITLE
 209
 210 # Exec to the program we really want to run, thereby continuing in
 211 # just the one process, and let it run in parallel with whatever
 212 # called this script (unless gdb was requested in original $1).
 213
 214 if [ "${use_gdb:-}" = "" ] ; then
 215   exec "${EXIMON_BINARY}" $cmd_args &
 216 else
 217   exec "$use_gdb" "${EXIMON_BINARY}" $cmd_args
 218   # not backgrounded
 219 fi
 220
 221 # End