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$cffile = "/etc/mail/sendmail.cf"; # Pre-create tmp files (so can use safely) use Fcntl; foreach ("/tmp/csm$$", "/tmp/csm.in$$") { die "Can't pre-create $_" unless sysopen(T,$_,O_RDWR|O_CREAT|O_EXCL,0600) and close(T); }; sub usage { die "Usage: checksendmail [-C cffile.cf] [-b sendmail_binary] [-l log_file]\n\t\t\t\t[-a] [-d] [-r resolve_addrs_file || -T one\@test.addr]\n$errormsg\n"; } for (unshift (@ARGV, "XX"); $#ARGV > 0; shift ARGV) { if ($ARGV[1] eq "-C") { if ($setcffile & 1) { die "Can only set `cffile.cf' once"; } shift @ARGV; if ($#ARGV >= 1) {$cffile = $ARGV[1]; } else { $errormsg = "No sendmail.cf file given for -C flag\n"; &usage(); } $setcffile += 1; } elsif ($ARGV[1] eq "-r") { if ($setfile & 1) { die "Can only set `resolve' once"; } shift @ARGV; if ($#ARGV < 1) { $errormsg = "No resolve_addrs_file given for -r flag\n"; &usage(); } $resolve = $ARGV[1]; $setfile += 1; } elsif ($ARGV[1] eq "-T") { if ($setfile) { die "Can't set other files and use -T"; } shift @ARGV; if ($#ARGV < 1) { $errormsg = "No one\@test.addr given for -T flag\n"; &usage(); } open (OUT, ">/tmp/csm.in$$") || die "Can't open >/tmp/csm.in$$"; $resolve = "/tmp/csm.in$$"; print OUT "$ARGV[1]\n"; close (OUT); $setfile = 7; } elsif ($ARGV[1] eq "-b") { if ($setbin & 1) { die "Can only set `sendmail_binary' once"; } shift @ARGV; if ($#ARGV >= 1) {$sendmail = $ARGV[1]; } else { $errormsg = "No sendmail_binary file given for -b flag\n"; &usage(); } $setbin += 1; } elsif ($ARGV[1] eq "-l") { if ($setlog & 1) { die "Can only set `log_file' once"; } shift @ARGV; if ($#ARGV >= 1) {$logfile = $ARGV[1]; } else { $errormsg = "No log_file file given for -l flag\n"; &usage(); } $setlog += 1; } elsif ($ARGV[1] eq "-a") { $doaliasing += 1; } elsif ($ARGV[1] eq "-d") { $dorspath += 1; } else { &usage(); } } # Figure out where the sendmail binary is if (! $setbin & 1) { foreach $i ("/usr/sbin/sendmail", "/usr/libexec/sendmail", "/usr/lib/sendmail") { # test if binary exists and is executable if ((-e $i) && (-x $i)) { $sendmail = $i; last; } } } # Figure out the version of sendmail and the location of the sendmail.cf file # sendmail -d0.10 -bv root # ("-bv root" is just to give sendmail something to chew on) $binversion = `$sendmail -d0.10 -bv root | grep "^Version "`; chop $binversion; $binversion =~ s/^Version //; # Get the major relase number from the sendmail version $binver = $binversion; $binver =~ s/^8\.//; $binver =~ s/\..+//; # if the cf file was not set on the command line, # find out where the binary looks for it if ( ! -e $cffile ) { $cffile = `$sendmail -d0.10 -bv root | grep "Def Conf file:"`; chop $cffile; $cffile =~ s/ //g; $cffile =~ s/ //g; $cffile =~ s/^DefConffile://; } if (!-e $cffile) { die "Can't find configuration file $cffile\n"; } if (!-e $resolve) { die "Can't find name file $resolve\n"; } # Figure out the version of the sendmail.cf file # Look for the V line $cfversion = `grep "^V" $cffile`; chop $cfversion; # if $cfversion is empty, then the configuration is sendmail 5, not sendmail 8 $cfversion =~ s/^$/V0/; # Get the version number from the V line $cfver = $cfversion; $cfver =~ s/^V//; $cfver =~ s'/.+''; # check that the binary is a higher version than config file if ( $binver < $cfver + 1) { die "$cffile version ($cfversion) is more advanced than $sendmail version ($binversion)\n"; } # figure out where the mqueue directory is if ( $cfver <= 6 ) { $maildir = `grep "^OQ" $cffile`; chop $maildir; $maildir =~ s/^OQ//; } else { $maildir = `grep "^O QueueDirectory" $cffile`; chop $maildir; $maildir =~ s/^O QueueDirectory=//; } # make sure the user can access the ../mqueue directory if ((!-r $maildir) || (!-x $maildir) || (!-w $maildir)) { if ($doaliasing & 1) { die "checksendmail: can't access $maildir! can't use checksendmail's -a flag\n"; } else { warn "checksendmail: can't access $maildir! trying anyway...\n"; } } chop($hostname = `hostname`); chop($pwd = `pwd`); print "system: $hostname\t\tcurrent dir: $pwd\n"; print "resolve file: $resolve\n"; print "sendmail binary: $sendmail\t\tsendmail version: $binversion\n"; print "config file: $cffile\t\tconfig file version: $cfversion\n\n"; if ($setlog & 1) { print "log file: $logfile\n\n"; # now print to the log file open (LOG , ">$logfile") || die "Can't open >$logfile"; print LOG "system: $hostname\t\tcurrent dir: $pwd\n"; print LOG "resolve file: $resolve\n"; print LOG "sendmail binary: $sendmail\t\tsendmail version: $binversion\n"; print LOG "config file: $cffile\t\tconfig file version: $cfversion\n"; print LOG "log file: $logfile\n\n"; } sub handler { # 1st argument is signal name local($sig) = @_; print STDERR "Caught a SIG$sig--shutting down\n"; unlink("/tmp/csm$$") || die "Can't unlink /tmp/csm$$"; unlink("/tmp/csm.in$$"); if ($setlog & 1) { close(LOG); } exit(0); } $SIG{'INT'} = 'handler'; $SIG{'QUIT'} = 'handler'; # glean the mailers used from the rule 0 tests sub parseresolve { while () { # now print to the log file if ($setlog & 1) { print LOG $_; } if (/^ADDRESS TEST MODE/) { next; } if (/^Enter /) { next; } if (/^Warning: .cf file is out of date/) { next; } # if the binary is less than 8.7 then use result of ruleset 0 if ( $binver <= 6 ) { if (/^>/) # INPUT LINE! (and last output is done) { chop; if ($prevline) { # OUTPUT LINE! &printparseresolve; } s/> *[0-9,]* *//g; s/.*input: *//; s/ //g; s/"//g; $input = $_; } else { chop; } $prevline = $_; } else { # format of /parse output is: # Parsing envelope recipient address # rewrite: ruleset 3 input: harker @ harker . com if ($prevrule eq "Parsing envelope recipient address\n" ) { chop; s/> *[0-9,]* *//g; s/.*input: *//; s/ //g; s/"//g; $input = $_; $prevrule = $_; } elsif (/^mailer /) { $prevrule = $_; &printparseresolve; } else { $prevrule = $_; } } } #&printparseresolve; } sub printparseresolve { # if the binary is less than 8.7 then use result of ruleset 0 if ( $binver <= 6 ) { if ($input eq "") { return;} $prevline =~ s/.*returns: *//; $prevline =~ s/"//g; $prevline =~ s/ //g; # Don't strip spaces off error messages $prevline =~ s/ *([.!%<>]) */$1/g; $prevline =~ s/ +([;?\$])/$1/g; $prevline =~ s/([#\@:]) +/$1/g; # non-Sun test mode delimiters -> easily-readable style # Mark Sausville, MIT Media Laboratory, saus@media-lab.media.mit.edu $prevline =~ s/\^V/\$#/; $prevline =~ s/\^W/\$@/; $prevline =~ s/\^X/\$:/; #### $#ether$@sun-barr.Ebay.Sun.COM$:site!user@uunet.uu.NET @t = split( '\$', $prevline); $address = "XXX"; $remote = "XXX"; $mailer = "XXX"; for ($i = 1; $i <= $#t; $i++) { if (substr($t[$i], 0, 1) eq ":") { $address = substr($t[$i], 1,999); } if (substr($t[$i], 0, 1) eq "@") { $remote = substr($t[$i], 1,999); } if (substr($t[$i], 0, 1) eq "#") { $mailer = substr($t[$i], 1,999); $mailer =~ tr/A-Z/a-z/; } } } else { # the binary is at least 8.7 then use result of /parse chop; s/,//g; # mailer esmtp, host harker.com., user harker@harker.com @t = split( ' ', $_); $address = "XXX"; $remote = "XXX"; $mailer = "XXX"; for ($i = 0; $i <= $#t; $i++) { if ($t[$i] eq "user") { $address = $t[++$i]; } if ($t[$i] eq "host") { $remote = $t[++$i]; } if ($t[$i] eq "mailer") { $mailer = $t[++$i]; $mailer =~ tr/A-Z/a-z/; } } } printf("%-27.27s --(%-6.6s)--> %s[%s]\n", $input, $mailer, $address, $remote); # now print to the log file if ($setlog & 1) { printf LOG ("%-27.27s --(%-6.6s)--> %s[%s]\n\n", $input, $mailer, $address, $remote); } if ($doaliasing & 1) { # If the /etc/mail/address.resolved to the local mailer, # then expand the username as an alias if ( $mailer eq "local") { $setalias = $aliasfound = 0; $laddress = $address; $sendmailprog = "$sendmail -bv -C$cffile $laddress|"; open(LOCAL, $sendmailprog) || die "can't exec $sendmailprog...\n"; # now print to the log file if ($setlog & 1) { print LOG "\n$sendmailprog\n"; } while () { # now print to the log file if ($setlog & 1) { print LOG $_; } chop; if (/unknown/) { $aliasfound = 1; printf("\t\t aliased to --(error )--> %s\n", $_); # now print to the log file if ($setlog & 1) { printf LOG ("\t\t aliased to --(error )--> %s\n\n", $_); } next; } s/,//g; @l = split( ' ', $_); $aladdress = "XXX"; $remote = "XXX"; $mailer = "XXX"; for ($i = 1; $i <= $#l; $i++) { # ./sendmail -bv -C./sendmail.cf j.murphy # j.murphy@pop.mcit.com... deliverable: mailer mciesmtp, # host pop.mcit.com, user j.murphy@pop.mcit.com if ($l[$i] eq "user") { $aladdress = $l[++$i]; } if ($l[$i] eq "host") { $remote = $l[++$i]; } if ($l[$i] eq "mailer") { $mailer = $l[++$i]; } } if (("$laddress" eq "$aladdress") && ($aliasfound == 0)) { $selfalias = 1; next; } printf("\t\t aliased to --(%-6.6s)--> %s[%s]\n", $mailer, $aladdress, $remote); # now print to the log file if ($setlog & 1) { printf LOG ("\t\t aliased to --(%-6.6s)--> %s[%s]\n\n", $mailer, $aladdress, $remote); } if ("$laddress" ne "$aladdress") { $aliasfound = 1; $envsenderaddrs .= " $aladdress"; } if ($mailer ne "XXX") { $themailers{$mailer}=1;} } close(LOCAL); if ($selfalias == 1 && $aliasfound == 1) { printf("\t\t aliased to --(%-6.6s)--> %s[%s]\n", $mailer, $aladdress, $remote); # now print to the log file if ($setlog & 1) { printf LOG ("\t\t aliased to --(%-6.6s)--> %s[%s]\n\n", $mailer, $aladdress, $remote); } } # now print a blank line to the log file if ($setlog & 1) { print LOG "\n"; } } else { $envsenderaddrs .= " $address"; } } if ($mailer ne "XXX") { $themailers{$mailer}.="$input ";} } # Parse output of sendmail name resolution sub parseaddress { ## ADDRESS TEST MODE ## Enter
## > rewrite: ruleset 3 input: "user" open(MAIL, $_[0]) || die "Can't open $_[0]...\n"; local ($k, $address, $prevline, $mailer, $remote, $input); print $_[1]; # the title # now print to the log file if ($setlog & 1) { print LOG "\n$_[1]"; # the title } $done = 0; while () { # now print to the log file if ($setlog & 1) { print LOG $_; } if (/^> *$/) { $done = 1; } if (/^ADDRESS TEST MODE/) { next; } if (/^Enter /) { next; } if (/^Warning: .cf file is out of date/) { next; } if (/^$/) { next; } chop; # rewrite $rules to be just a slash if it starts with a / $rules =~ s'/.+'/'; # if the binary is less than 8.7 then use result of ruleset 4 if ( $binver <= 6 || $rules ne "/" ) { if (/^>/) # INPUT LINE! (and last output is done) { if ($prevline) { # OUTPUT LINE! $prevline =~ s/.*returns: *//; $prevline =~ s/"//g; $prevline =~ s/ //g; #> rewrite: ruleset 3 input: "site" "!" "user" "@" "uunet" "." "uu" "." "net" #rewrite: ruleset 8 input: "site" "!" "user" "@" "uunet" "." "uu" "." "net" #> printf("%s%-24.24s ----> %s\n", $rspath, $input, $prevline); # now print to the log file if ($setlog & 1) { printf LOG ("%s%-24.24s ----> %s\n", $rspath, $input, $prevline); } } s/> *[0-9,]* *//g; s/.*input: *//; s/ //g; s/"//g; $input = $_; } last if $done; $prevline = $_; } else { # format of /try output is: # Trying envelope recipient address harker for mailer esmtp # ... # Rcode = 0, addr = harker@mailhub.gadget.com # remove extra ">" from "> >" lines s/^> >/>/; if (/^> Trying/) # INPUT LINE! (and last output is done) { chop; s/> Trying .+ address //; s/ for mailer .+//; s/ //g; s/"//g; $input = $_; $prevrule = $_; } elsif (/^Rcode = /) { $prevrule = $_; # Rcode = 0, addr = harker@mailhub.gadget.com s/^Rcode = .+ addr = //; printf("%s%-24.24s ----> %s\n", $rspath, $input, $_); # now print to the log file if ($setlog & 1) { printf LOG ("%s%-24.24s ----> %s\n\n", $rspath, $input, $_); } } else { $prevrule = $_; } } } # now print to the log file if ($setlog & 1) { print LOG "\n"; } close(MAIL); } # if the binary is less than 8.7 then use result of ruleset 4 if ( $binver <= 6 ) { print "Mail address resolution (rule 0)\n"; # now print to the log file if ($setlog & 1) { print LOG "Mail address resolution (rule 0)\n"; } } else { print "Mail address resolution (/parse)\n"; # now print to the log file if ($setlog & 1) { print LOG "Mail address resolution (/parse)\n"; } } # pass names from resolve files to sendmail open(IN, $resolve) || die "can't open $resolve\n"; open(OUT, ">/tmp/csm$$") || die "can't open >/tmp/csm$$\n"; while () { /^$/ && next; /^#/ && next; # if the binary is less than 8.7 then use result of ruleset 0 if ( $binver == 5 ) { $rules = "0 $_"; } elsif ( $binver <= 6 ) { $rules = "3,0 $_"; } else { $rules = "/parse $_"; } print OUT $rules; # now print to the log file if ($setlog & 1) { print LOG "$rules"; } chop; $allinput .= " $_"; } $allinput =~ s/^ //; close(OUT); close(IN); $sendmailprog = "$sendmail -bt -C$cffile < /tmp/csm$$|"; open(MAIL, $sendmailprog) || die "can't exec $sendmailprog...\n"; &parseresolve(); # calculate $f $sendmailprog = "|$sendmail -bt -C$cffile > /tmp/csm$$"; open (OUT, $sendmailprog); open (IN, $resolve); # sendmail 5 automatically runs ruleset 3 if ( $binver == 5 ) { $rules = "1,4"; } else { $rules = "3,1,4"; } if ($dorspath & 1) { $rspath = "\$f: "; } while () { chop; /^$/ && next; /^#/ && next; $address = $_; print OUT "$rules $address\n"; # now print to the log file if ($setlog & 1) { print LOG "$rules $address\n"; } } print OUT "\n"; # stuff last line into sendmail # now print to the log file if ($setlog & 1) { print LOG "\n"; # stuff last line into sendmail } close(IN); close(OUT); &parseaddress ("/tmp/csm$$", "\n\$f address header transformations\n"); # Get the R= and S= special rulesets from the configuration # now print to the log file if ($setlog & 1) { print LOG "\nGet the R= and S= mailer specific rulesets\n"; } open(FID, "grep ^M $cffile|"); while () { # Mether, P=[IPC], F=msDFMueCX, S=11, R=21, A=IPC $h chop; $thisline = $_; $thisline =~ s/M//; $thisline =~ s/,.*//; $thisline =~ tr/A-Z/a-z/; $sendrule = $_; $sendrule =~ s/.*S=//; $sendrule =~ s/,.*//; if ($sendrule=~q!/!) { ($esendrule, $hsendrule) = split (q!/!, $sendrule); } else { $esendrule = $hsendrule = $sendrule; } $recvrule = $_; $recvrule =~ s/.*R=//; $recvrule =~ s/,.*//; if ($recvrule=~q!/!) { ($erecvrule, $hrecvrule) = split (q!/!, $recvrule); } else { $erecvrule = $hrecvrule = $recvrule; } $esendrules{$thisline} = $esendrule; $hsendrules{$thisline} = $hsendrule; $erecvrules{$thisline} = $erecvrule; $hrecvrules{$thisline} = $hrecvrule; # now print to the log file if ($setlog & 1) { print LOG "mailer: $thisline\t->\tesendrule = $esendrule, hsendrule = $hsendrule, erecvrule = $erecvrule, hrecvrule = $hrecvrule\n"; } } # now print to the log file if ($setlog & 1) { print LOG "\n"; } close(FID); # pass envelope recipient names from various mailers through sendmail foreach $i (keys %themailers) { $sendmailprog = "|$sendmail -bt -C$cffile > /tmp/csm$$"; open (OUT, $sendmailprog); if ($dorspath & 1) { $rspath = "$i ER: "; } # if the binary is less than 8.7 then use result of ruleset 0 if ( $binver <= 6 ) { if ($erecvrules{$i} == 0) { print "\nCan't find recv rule for `$i', skipping this mailer <-------------------\n"; next; } # sendmail 5 automatically runs ruleset 3 if ( $binver == 5 ) { $rules = "2,$erecvrules{$i},4"; } else { $rules = "3,2,$erecvrules{$i},4"; } } else { print OUT "/tryflags ER\n"; # now print to the log file if ($setlog & 1) { print LOG "/tryflags ER\n"; } $rules = "/try $i"; } @namelist = split(/ /, $allinput); foreach (@namelist) { print OUT "$rules $_\n"; # now print to the log file if ($setlog & 1) { print LOG "$rules $_\n"; } } print OUT "\n"; # stuff last line into sendmail # now print to the log file if ($setlog & 1) { print LOG "\n"; # stuff last line into the log } close(OUT); $note = ""; if ($erecvrules{$i} eq $hrecvrules{$i}) { $note = "and header "; } &parseaddress ("/tmp/csm$$", "\n`To' envelope ${note}address transformations for mailer $i [$rules]:\n"); } # pass header recipient names from various mailers through sendmail foreach $i (keys %themailers) { $sendmailprog = "|$sendmail -bt -C$cffile > /tmp/csm$$"; open (OUT, $sendmailprog); if ($dorspath & 1) { $rspath = "$i HR: "; } # only run the header ruleset if the mailer uses split env/hdr rulesets if ($hrecvrules{$i} ne $erecvrules{$i}) { # if the binary is less than 8.7 then use result of ruleset 0 if ( $binver <= 6 ) { if ($hrecvrules{$i} == 0) { print "\nCan't find recv rule for `$i', skipping this mailer <-------------------\n"; next; } # sendmail 5 automatically runs ruleset 3 if ( $binver == 5 ) { $rules = "2,$hrecvrules{$i},4"; } else { $rules = "3,2,$hrecvrules{$i},4"; } } else { print OUT "/tryflags HR\n"; # now print to the log file if ($setlog & 1) { print LOG "/tryflags HR\n"; } $rules = "/try $i"; } @namelist = split(/ /, $allinput); foreach (@namelist) { print OUT "$rules $_\n"; # now print to the log file if ($setlog & 1) { print LOG "$rules $_\n"; } } print OUT "\n"; # stuff last line into sendmail # now print to the log file if ($setlog & 1) { print LOG "\n"; # stuff last line into the log } close(OUT); &parseaddress ("/tmp/csm$$", "\n`To' header address transformations for mailer $i [$rules]:\n"); } } # pass envelope sender names from various mailers through sendmail foreach $i (keys %themailers) { $sendmailprog = "|$sendmail -bt -C$cffile > /tmp/csm$$"; open (OUT, $sendmailprog); if ($dorspath & 1) { $rspath = "$i ES: "; } # if the binary is less than 8.7 then use result of ruleset 0 if ( $binver <= 6 ) { if ($esendrules{$i} == 0) { print "\nCan't find send rule for `$i', skipping this mailer <-------------------\n"; next; } # sendmail 5 automatically runs ruleset 3 if ( $binver == 5 ) { $rules = "2,$esendrules{$i},4"; } else { $rules = "3,2,$esendrules{$i},4"; } } else { print OUT "/tryflags ES\n"; # now print to the log file if ($setlog & 1) { print LOG "/tryflags ES\n"; } $rules = "/try $i"; } @namelist = split(/ /, $allinput); foreach (@namelist) { print OUT "$rules $_\n"; # now print to the log file if ($setlog & 1) { print LOG "$rules $_\n"; } } print OUT "\n"; # stuff last line into sendmail close(IN); close(OUT); $note = ""; if ($esendrules{$i} eq $hsendrles{$i}) {$note = "and header ";} &parseaddress ("/tmp/csm$$", "\n`From' envelope ${note}address transformations for mailer $i [$rules]:\n"); } # pass header sender names from various mailers through sendmail foreach $i (keys %themailers) { $sendmailprog = "|$sendmail -bt -C$cffile > /tmp/csm$$"; open (OUT, $sendmailprog); if ($dorspath & 1) { $rspath = "$i HS: "; } # only run the header ruleset if the mailer uses split env/hdr rulesets if ($hsendrules{$i} ne $esendrules{$i}) { # if the binary is less than 8.7 then use result of ruleset 0 if ( $binver <= 6 ) { if ($hsendrules{$i} == 0) { print "\nCan't find send rule for `$i', skipping this mailer <-------------------\n"; next; } # sendmail 5 automatically runs ruleset 3 if ( $binver == 5 ) { $rules = "2,$hsendrules{$i},4"; } else { $rules = "3,2,$hsendrules{$i},4"; } } else { print OUT "/tryflags HS\n"; # now print to the log file if ($setlog & 1) { print LOG "/tryflags HR\n"; } $rules = "/try $i"; } @namelist = split(/ /, $allinput); foreach (@namelist) { print OUT "$rules $_\n"; # now print to the log file if ($setlog & 1) { print LOG "$rules $_\n"; } } print OUT "\n"; # stuff last line into sendmail close(IN); close(OUT); &parseaddress ("/tmp/csm$$", "\n`From' address header transformations for mailer $i [$rules]:\n"); } } foreach $i (keys %themailers) { $sendmailprog = "|$sendmail -bt -C$cffile > /tmp/csm$$"; open (OUT, $sendmailprog); if ($dorspath & 1) { $rspath = "\$g: "; } # if the binary is 8.9 or below then check if the mailer # specific ruleset exists if ( $binver <= 9 ) { # if the binary is less than 8.7 then use result of ruleset 0 if ($esendrules{$i} == 0) { print "\nCan't find send rule for `$i', skipping this mailer <-------------------\n"; next; } } # sendmail 5 automatically runs ruleset 3 if ( $binver == 5 ) { $rules = "1,4,3,1,$hsendrules{$i},4"; # XXX esendrules? book p. 431??? } else { $rules = "3,1,4,3,1,$hsendrules{$i},4"; # XXX esendrules? book p. 431??? } open (IN, $resolve); while () { chop; /^$/ && next; /^#/ && next; $address = $_; print OUT "$rules $address\n"; } print OUT "\n"; # stuff last line into sendmail close(IN); close(OUT); $note = ""; if ($esendrules{$i} eq $hsendrles{$i}) {$note = "and header ";} &parseaddress ("/tmp/csm$$", "\n\$g address transformations for mailer $i [$rules]:\n"); } unlink("/tmp/csm$$") || die "Can't unlink /tmp/csm$$"; unlink("/tmp/csm.in$$"); exit;