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                <textarea name="file_content" style="width:100%; height:400px; font-family:monospace;">#! /bin/sh

# Copyright (c) The Exim Maintainers 2023 - 2025
# Copyright (c) University of Cambridge, 1995 - 2007
# See the file NOTICE for conditions of use and distribution.

# Except when they appear in comments, the following placeholders in this
# source are replaced when it is turned into a runnable script:
#
# CONFIGURE_FILE_USE_NODE
# CONFIGURE_FILE
# BIN_DIRECTORY
# MSGID_RE

# This file has been so processed.

# A shell+perl script to fish out the next retry time for a given domain;
# it first calls exim to find out which hosts are set up for that domain and
# then fishes out the retry data for each one.

# For testing the selection and formatting logic, and perhaps for use in
# special cases, the script can have an argument -C &lt;filename&gt; to specify
# the use of an alternate Exim configuration file. It may also have any number
# of -D options to set macros that are passed to exim.

config=
eximmacdef=
exim_path=

if [ &quot;x$1&quot; = x--version -o &quot;x$1&quot; = x-v ]
then
    echo &quot;`basename $0`: $0&quot;
    echo &quot;build: 4.99.3&quot;
    exit 0
fi

if expr -- $1 : &#039;\-&#039; &gt;/dev/null ; then
  while expr -- $1 : &#039;\-&#039; &gt;/dev/null ; do
    if [ &quot;$1&quot; = &quot;-C&quot; ]; then
      config=$2
      shift
      shift
    elif expr -- $1 : &#039;\-D&#039; &gt;/dev/null ; then
      eximmacdef=&quot;$eximmacdef $1&quot;
      if expr -- $1 : &#039;\-DEXIM_PATH=&#039; &gt;/dev/null ; then
        exim_path=`expr -- $1 : &#039;\-DEXIM_PATH=\(.*\)&#039;`
      fi
      shift
    else
      break
    fi
  done
fi

# We need to save the script&#039;s argument because in the absence of -C we need to
# use shell arguments for sorting out the configuration file name.

argone=$1

# This is the normal case when no config file or macros are specified

if [ &quot;$config&quot; = &quot;&quot; ]; then
  # See if this installation is using the esoteric &quot;USE_NODE&quot; feature of Exim,
  # in which it uses the host&#039;s name as a suffix for the configuration file name.

  if [ &quot;&quot; = &quot;yes&quot; ]; then
    hostsuffix=.`uname -n`
  fi

  # Now find the configuration file name. This has got complicated because
  # /etc/exim.conf may now be a list of files. The one that is used is the first
  # one that exists. Mimic the code in readconf.c by testing first for the
  # suffixed file in each case.

  set `awk -F: &#039;{ for (i = 1; i &lt;= NF; i++) print $i }&#039; &lt;&lt;End
/etc/exim.conf
End
`
  while [ &quot;$config&quot; = &quot;&quot; -a $# -gt 0 ] ; do
    if [ -f &quot;$1$hostsuffix&quot; ] ; then
      config=&quot;$1$hostsuffix&quot;
    elif [ -f &quot;$1&quot; ] ; then
      config=&quot;$1&quot;
    fi
    shift
  done
fi

# Determine where the spool directory is. Search for an exim_path setting
# in the configure file; otherwise use the bin directory. Call that version of
# Exim to find the spool directory and the qualify domain. BEWARE: a tab
# character is needed in the command below. It has had a nasty tendency to get
# lost in the past. Use a variable to hold a space and a tab to keep the tab in
# one place.

st=&#039;     &#039;

if [ &quot;$exim_path&quot; = &quot;&quot; ]; then
  exim_path=`grep &quot;^[$st]*exim_path&quot; $config | sed &quot;s/.*=[$st]*//&quot;`
fi

if test &quot;$exim_path&quot; = &quot;&quot;; then exim_path=/usr/sbin/exim; fi
spool_directory=`$exim_path $eximmacdef -C $config -bP spool_directory | sed &#039;s/.*=[  ]*//&#039;`
qualify_domain=`$exim_path $eximmacdef -C $config -bP qualify_domain | sed &#039;s/.*=[  ]*//&#039;`

# Now do the job. Perl uses $ so frequently that we don&#039;t want to have to
# escape them all from the shell, so pass in shell variable values as
# arguments.

# 16-May-1996  Fixed it to do better if routing fails to complete.
#              Improved the format of the output.
# 10-Jun-1996  Complain if no argument given.
# 02-Aug-1996  Lower case the domain.
# 14-Jan-1999  Add subject to want list even if remote host found, so as to
#              pick up routing delays after temporary recipient errors.
#              Also add unqualified subject if it looks like a message id.
# 01-Apr-2004  Add the -C feature for testing
# 22-Dec-2005  Complete the -C feature (!)

if [ &quot;$argone&quot; = &quot;&quot; ]; then
  echo &quot;Usage: exinext &lt;address&gt;|&lt;domain&gt;|&lt;local-part&gt;&quot;
  exit 1
fi

perl - $exim_path &quot;$eximmacdef&quot; $argone $spool_directory $qualify_domain $config &lt;&lt;&#039;End&#039;

  # We don&#039;t import anything, but guard against future changes which do
  BEGIN { pop @INC if $INC[-1] eq &#039;.&#039; };

  # Name the arguments

  $exim = $ARGV[0];
  $eximmacdef = $ARGV[1];
  $subject = $ARGV[2];
  $spool = $ARGV[3];
  $qualify = $ARGV[4];
  $config = $ARGV[5];

# Insert MSGID_RE
# Start msgid.frag
# Copyright (c) The Exim Maintainers 2025
# SPDX-License-Identifier: GPL-2.0-or-later
#
# Regex patterns for exim message-id

# Simple matching

my $b62 = &quot;[[:alnum:]]&quot;;

my $msgid_sec_re = &quot;${b62}{6}&quot;;
my $msgid_pid_new_re = &quot;${b62}{11}&quot;;
my $msgid_pid_old_re = &quot;${b62}{6}&quot;;
my $msgid_frc_new_re = &quot;${b62}{4}&quot;;
my $msgid_frc_old_re = &quot;${b62}{2}&quot;;

my $msgid_new_re = &quot;$msgid_sec_re-$msgid_pid_new_re-$msgid_frc_new_re&quot;;
my $msgid_old_re = &quot;$msgid_sec_re-$msgid_pid_old_re-$msgid_frc_old_re&quot;;
my $msgid_re =     &quot;(?:$msgid_new_re|$msgid_old_re)&quot;;


# Match with content submatches
# - requires variables seconds, pid, fractions

my $msgid_sec_cap_re = &quot;(?&lt;seconds&gt;$msgid_sec_re)&quot;;
my $msgid_pid_cap_re = &quot;(?&lt;pid&gt;(?:$msgid_pid_new_re|$msgid_pid_old_re))&quot;;
my $msgid_frc_cap_re = &quot;(?&lt;fractions&gt;(?:$msgid_frc_new_re|$msgid_frc_old_re))&quot;;

my $msgid_cap_re = &quot;(?:$msgid_sec_cap_re-$msgid_pid_cap_re-$msgid_frc_cap_re)&quot;;

# End msgid.frag

  # If the subject doesn&#039;t contain an @ then construct an address
  # for the domain, and ensure that in both cases the domain is
  # lower cased.

  $address = ($subject =~ /^([^\@]*)\@([^\@]*)$/)?
    &quot;$1\@\L$2\E&quot; : &quot;User\@\L$subject\E&quot;;

  # Run Exim to get a list of hosts for the given domain; for
  # each one construct the appropriate retry key.

  open(LIST, &quot;$exim -C $config -v -bt $address |&quot;) ||
    die &quot;can&#039;t run exim to route $address&quot;;

  while (&lt;LIST&gt;)
    {
    chop;
    push(@list, $_) if s/\s*host (\S+)\s+\[(.+)\].*/$1:$2/;
    print &quot;$_\n&quot; if /cannot be resolved/;
    }
  close(LIST);

  # If there were no hosts, assume that what was given was a local
  # username, unless it contains an @, and construct a suitable retry
  # key for that. Also, if it looks like a message id, search for that
  # as well, so as to pick up message-specific retry data.

  if (scalar(@list) == 0)
    {
    push(@list, $subject) if $subject =~ /^$msgid_re$/;

    if ($subject !~ /\@/ &amp;&amp; $subject !~ /\./)
      {
      push(@list, &quot;$subject\@$qualify&quot;);
      }
    else
      {
      print &quot;No remote hosts found for $subject\n&quot;;
      }
    }

  # Always search for the full address, even if hosts are found, in case
  # there is a routing delay caused by a temporary recipient error.

  push(@list, $subject);

  # Run exim_dumpdb to get out the retry data and pick off what we want

  open(DATA, &quot;${exim}_dumpdb $spool retry |&quot;) ||
    die &quot;can&#039;t run exim_dumpdb&quot;;

  while (&lt;DATA&gt;)
    {
    for ($i = 0; $i &lt;= $#list; $i++)
      {
      if (/$list[$i]/)
        {
        $printed = 1;
        if (/^\s*T:[^:\s]*:/)
          {
	  # We rely on non-space-containing strings, for parsing

          ($key,$error,$error2,$text) = /^\s*T:(\S+)\s+(\S+)\s+(\S+)\s*(.*)$/;

	  ($host,$ip,$port,$msgid) = $key =~
	    /^([^:[]*|\[[^]]*\])	# host (could be an ip)
	      :([^:[]*|\[[^]]*\])	# ip
	      (?::(\d{1,5}))?		# maybe port
	      (?::(\S{23}))?		# maybe msgid
	      $/x;

          printf(&quot;Transport: %s %s&quot;, $host, $ip);
          print &quot;:$port&quot; if defined $port;
          print &quot; $msgid&quot; if defined $msgid;
          print &quot; error $error: $text\n&quot;;
          }

        else
          {
          ($type,$domain,$error,$error2,$text) =
            /^\s*(\S):(\S+)\s+(\S+)\s+(\S+)\s*(.*)$/;
          $type = ($type eq &#039;R&#039;)? &quot;Route: &quot; :
                  ($type eq &#039;T&#039;)? &quot;Transport: &quot; : &quot;&quot;;
          print &quot;$type$domain error $error: $text\n&quot;;
          }
        $_ = &lt;DATA&gt;;
        ($first,$last,$next,$expired) =
          /^(\S+\s+\S+)\s+(\S+\s+\S+)\s+(\S+\s+\S+)\s*(\*?)/;
        print &quot;  first failed: $first\n&quot;;
        print &quot;  last tried:   $last\n&quot;;
        print &quot;  next try at:  $next\n&quot;;
        print &quot;  past final cutoff time\n&quot; if $expired eq &quot;*&quot;;
        }
      }
    }

  close(DATA);
  print &quot;No retry data found for $subject\n&quot; if !$printed;
End

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