iankelling.org Git - distro-setup/blob - mailtest-check

   1 #!/bin/bash
   2
   3 # Usage: mail-test-check [slow] [anything]
   4 #
   5 # slow: do slow checks, like spamassassin
   6 #
   7 # anything: consider non-interactive, dont print unless something went
   8 # wrong
   9
  10
  11 source /b/errhandle/err
  12
  13 [[ $EUID == 0 ]] || exec sudo -E "${BASH_SOURCE[0]}" "$@"
  14
  15 shopt -s nullglob
  16
  17 e() { $int || return 0; printf "mailtest-check: %s\n" "$*"; }
  18
  19 getspamdpid() {
  20   if [[ ! $spamdpid || ! -d /proc/$spamdpid ]]; then
  21     # try twice in case we are restarting, it happens.
  22     for i in 1 2; do
  23       spamdpid=$(systemctl show --property MainPID --value spamassassin | sed 's/^[10]$//' ||:)
  24       if [[ $spamdpid ]]; then
  25         break
  26       fi
  27       sleep 30
  28     done
  29   fi
  30 }
  31 pr() {
  32   if [[ -e /var/lib/prometheus/node-exporter ]]; then
  33     cat >>/var/lib/prometheus/node-exporter/mailtest-check.prom.$$
  34   fi
  35 }
  36
  37
  38 #### begin arg processing ####
  39 # spamassassin checking takes about 8 seconds.
  40 slow=false
  41 if [[ $1 == slow ]]; then
  42   slow=true
  43   shift
  44 fi
  45
  46 int=false
  47 if [[ $SUDO_USER || $SSH_CONNECTION ]]; then
  48   int=true
  49 fi
  50
  51 if [[ $1 == int ]]; then
  52   int=true
  53 fi
  54
  55 if [[ $1 == nonint ]]; then
  56   int=false
  57 fi
  58 #### end arg processing ####
  59
  60
  61 if ! $int; then
  62   sleep 60
  63 fi
  64
  65
  66 # TODO, get je to deliver the local mailbox: /m/md/INBOX
  67 # dovecot appears to setup, i can t be sure.
  68
  69
  70
  71 main() {
  72
  73   case $HOSTNAME in
  74     bk)
  75       folders=(/m/md/{expertpathologyreview.com,amnimal.ninja}/testignore)
  76       froms=(ian@iankelling.org z@zroe.org testignore@je.b8.nz iank@gnu.org)
  77       ;;
  78     je)
  79       froms=(ian@iankelling.org z@zroe.org testignore@expertpathologyreview.com testignore@amnimal.ninja)
  80       folders=(/m/md/je.b8.nz/testignore)
  81       ;;
  82     *)
  83       folders=(/m/md/l/testignore)
  84       froms=(testignore@je.b8.nz testignore@expertpathologyreview.com testignore@amnimal.ninja ian@iankelling.org z@zroe.org iank@gnu.org)
  85       if ! $int; then
  86         timeout 120 rsync --chown iank:iank -e "ssh -oIdentitiesOnly=yes -F /dev/null -i /root/.ssh/jtuttle" -t --inplace -r 'jtuttle@fencepost.gnu.org:/home/j/jtuttle/Maildir/new/' /m/md/l/testignore/new
  87       fi
  88       ;;
  89   esac
  90
  91
  92   # avoid errors like this:
  93   # Nov  8 08:16:05.439 [6080] warn: plugin: failed to parse plugin (from @INC): Can't locate Mail/SpamAssassin/Plugin/WLBLEval.pm: lib/Mail/SpamAssassin/Plugin/WLBLEval.pm: Permission denied at (eval 59) line 1.
  94   #Nov  8 08:16:05.439 [6080] warn: plugin: failed to parse plugin (from @INC): Can't locate Mail/SpamAssassin/Plugin/VBounce.pm: lib/Mail/SpamAssassin/Plugin/VBounce.pm: Permission denied at (eval 60) line 1.
  95   # i dont know why, i just found the solution online
  96   cd /m/md
  97
  98
  99   getspamdpid
 100   # first time we write, overwrite anything existing
 101   if [[ -e /var/lib/prometheus/node-exporter ]]; then
 102     cat >/var/lib/prometheus/node-exporter/mailtest-check.prom.$$ <<EOF
 103 mailtest_check_found_spamd_pid_bool $(( ${spamdpid:-0} > 0 ))
 104 EOF
 105   fi
 106   e spamdpid: $spamdpid
 107   if [[ ! $spamdpid ]]; then
 108     echo mailtest spamd pid not found. systemctl status spamassassin:
 109     systemctl status spamassassin
 110   fi
 111   tmpfile=$(mktemp)
 112   declare -i unexpected=0
 113   for folder in ${folders[@]}; do
 114     for from in ${froms[@]}; do
 115       latest=
 116       last_sec=0
 117
 118       if ! grep -rlFx "From: $from" $folder/{new,cur} >$tmpfile; then
 119         echo "no message found from: $from"
 120         continue
 121       fi
 122       # webmail sends them to cur it seems
 123       while read -r file; do
 124         if [[ $file -nt $latest ]]; then
 125           latest=$file
 126         fi
 127       done <$tmpfile
 128
 129       to=$(awk '/^Envelope-to: / {print $2}' $latest)
 130       last_sec=$(awk '/^Subject: / {print $4}' $latest)
 131
 132       if $slow; then
 133         if ! $int; then
 134           find $folder/new $folder/cur -type f -mmin +1080 -delete
 135         fi
 136         getspamdpid
 137         if [[ $spamdpid ]]; then
 138           if [[ $(readlink /proc/$$/ns/net) != "$(readlink /proc/$spamdpid/ns/net)" ]]; then
 139             spamcpre="nsenter -t $spamdpid -n -m"
 140           fi
 141
 142           declare -A results
 143           # pyzor fails for our test message, so dont put useless load on their
 144           # servers.
 145           # example line that sed is parsing:
 146           # (-0.1 / 5.0 requ) DKIM_SIGNED=0.1,DKIM_VALID=-0.1,DKIM_VALID_AU=-0.1,SPF_HELO_PASS=-0.001,SPF_PASS=-0.001,TVD_SPACE_RATIO=0.001 autolearn=_AUTOLEARN
 147           raw_results="$($spamcpre sudo -u Debian-exim spamassassin -t --cf='score PYZOR_CHECK 0' <"$latest" | tail -n2 | head -n1 | sed -r 's/^\([^)]*\) *//;s/=[^, ]*([, ]|$)/ /g')"
 148           for r in $raw_results; do
 149             case $r in
 150               # got this in an update 2022-01. dun care
 151               T_SCC_BODY_TEXT_LINE|SCC_BODY_SINGLE_WORD) : ;;
 152               # we have a new domain, ignore this.
 153               # it seems like some versions of spamassassin do BODY_SINGLE_WORD, others dont, we dun care.
 154               # bayes_00 is a new one indicating ham, we dont care if its missing.
 155               BAYES_00|BODY_SINGLE_WORD|FROM_FMBLA_NEWDOM*|autolearn) : ;;
 156               SPF_HELO_NEUTRAL)
 157                 # some of my domains use neutral spf, treat them the same.
 158                 results[SPF_HELO_PASS]=t
 159                 ;;
 160               *)
 161                 results[$r]=t
 162                 ;;
 163             esac
 164           done
 165           # debugging
 166           # e results = ${!results[@]}
 167           missing=()
 168
 169           keys=(DKIM_SIGNED DKIM_VALID{,_AU,_EF} SPF_HELO_PASS SPF_PASS TVD_SPACE_RATIO)
 170           if [[ $to == *@gnu.org && $from == *@gnu.org ]]; then
 171             keys=(ALL_TRUSTED TVD_SPACE_RATIO)
 172           elif [[ $to == *@gnu.org ]]; then
 173             # eggs has RCVD_IN_DNSWL_MED
 174             keys+=(RCVD_IN_DNSWL_MED)
 175           elif [[ $from == *@gnu.org ]]; then
 176             # eggs has these
 177             keys+=(RCVD_IN_DNSWL_MED DKIMWL_WL_HIGH)
 178           fi
 179
 180           for t in  ${keys[@]}; do
 181             if [[ ${results[$t]} ]]; then
 182               unset "results[$t]"
 183             elif [[ $t == DKIM_VALID_EF && $from == *@[^.]*.[^.]*.[^.]* ]]; then
 184               :
 185               # third level domains dont hit this. its because
 186               # /usr/share/perl5/Mail/SpamAssassin/Plugin/DKIM.pm checks
 187               # if its signed with the registryboundaries domain. afaik:
 188               # we need the actual domain to sign it, this would result in
 189               # a second signature. I only use second level domains for
 190               # testing atm, fsf doesnt use them for anything but the
 191               # forum and I dont expect that to have any deliverability
 192               # problems.  So, not bothering atm.
 193             else
 194               missing+=($t)
 195             fi
 196           done
 197           if (( ${#results[@]} || ${#missing[@]} )); then
 198             printf "$HOSTNAME spamtest %s/%s\n" "$latest"
 199             if (( ${#results[@]} )); then
 200               printf "unexpected %s" "${!results[*]} "
 201             fi
 202             if (( ${#missing[@]} )); then
 203               printf "missing %s" "${missing[*]}"
 204             fi
 205             echo # ends our printf string buildup
 206
 207             if $int; then
 208               echo mailtest-check: cat $latest:
 209               cat $latest
 210               echo mailtest-check: end of cat
 211               echo "$(tput setaf 5 2>/dev/null ||:)█$(tput sgr0 2>/dev/null||:)%.0s" $(eval echo "{1..${COLUMNS:-60}}")
 212             fi
 213           fi
 214         fi # if spamdpid
 215       fi # if $slow
 216
 217       now=$EPOCHSECONDS
 218       age_sec=$(( now - last_sec ))
 219       e $((age_sec / 60)):$(( age_sec % 60 )) ago. to:$to from:$from $latest
 220
 221       # usec = unix seconds
 222       pr <<EOF
 223 mailtest_check_last_usec{folder="$folder",from="$from"} $last_sec
 224 EOF
 225     done
 226     unexpected=$(( unexpected + ${#results[@]} + ${#missing[@]} ))
 227   done
 228   if $slow; then
 229     pr <<EOF
 230 mailtest_check_unexpected_spamd_results $unexpected
 231 EOF
 232   fi
 233
 234   dir=/var/lib/prometheus/node-exporter
 235   if [[ -e $dir  ]]; then
 236     mv $dir/mailtest-check.prom.$$ $dir/mailtest-check.prom
 237     # note: node_textfile_mtime_seconds will tell us when this last happened. useful for debugging.
 238   fi
 239 }
 240
 241 loop-main() {
 242   while true; do
 243     premain_sec=$EPOCHSECONDS
 244     main
 245     sleep $(( 300 - ( $EPOCHSECONDS - premain_sec ) ))
 246   done
 247 }
 248
 249
 250 if [[ $INVOCATION_ID ]]; then
 251   loop-main
 252 else
 253   main
 254 fi
 255
 256 exit 0