diff options
author | Patrick J Volkerding <volkerdi@slackware.com> | 2018-05-28 19:12:29 +0000 |
---|---|---|
committer | Eric Hameleers <alien@slackware.com> | 2018-05-31 23:39:35 +0200 |
commit | 646a5c1cbfd95873950a87b5f75d52073a967023 (patch) | |
tree | b8b8d2ab3b0d432ea69ad1a64d1c789649d65020 /source/n/postfix | |
parent | d31c50870d0bee042ce660e445c9294a59a3a65b (diff) | |
download | current-646a5c1cbfd95873950a87b5f75d52073a967023.tar.gz |
Mon May 28 19:12:29 UTC 201820180528191229
a/pkgtools-15.0-noarch-13.txz: Rebuilt.
installpkg: default line length for --terselength is the number of columns.
removepkg: added --terse mode.
upgradepkg: default line length for --terselength is the number of columns.
upgradepkg: accept -option in addition to --option.
ap/vim-8.1.0026-x86_64-1.txz: Upgraded.
d/bison-3.0.5-x86_64-1.txz: Upgraded.
e/emacs-26.1-x86_64-1.txz: Upgraded.
kde/kopete-4.14.3-x86_64-8.txz: Rebuilt.
Recompiled against libidn-1.35.
n/conntrack-tools-1.4.5-x86_64-1.txz: Upgraded.
n/libnetfilter_conntrack-1.0.7-x86_64-1.txz: Upgraded.
n/libnftnl-1.1.0-x86_64-1.txz: Upgraded.
n/links-2.16-x86_64-2.txz: Rebuilt.
Rebuilt to enable X driver for -g mode.
n/lynx-2.8.9dev.19-x86_64-1.txz: Upgraded.
n/nftables-0.8.5-x86_64-1.txz: Upgraded.
n/p11-kit-0.23.11-x86_64-1.txz: Upgraded.
n/ulogd-2.0.7-x86_64-1.txz: Upgraded.
n/whois-5.3.1-x86_64-1.txz: Upgraded.
xap/network-manager-applet-1.8.12-x86_64-1.txz: Upgraded.
xap/vim-gvim-8.1.0026-x86_64-1.txz: Upgraded.
Diffstat (limited to 'source/n/postfix')
-rw-r--r-- | source/n/postfix/README | 25 | ||||
-rw-r--r-- | source/n/postfix/doinst.sh | 76 | ||||
-rwxr-xr-x | source/n/postfix/postfix.SlackBuild | 230 | ||||
-rw-r--r-- | source/n/postfix/postfix.only.warn.regular.files.diff | 11 | ||||
-rw-r--r-- | source/n/postfix/postfix.script.starting.message.diff | 14 | ||||
-rw-r--r-- | source/n/postfix/postfix.url | 1 | ||||
-rw-r--r-- | source/n/postfix/rc.postfix | 68 | ||||
-rw-r--r-- | source/n/postfix/slack-desc | 19 |
8 files changed, 444 insertions, 0 deletions
diff --git a/source/n/postfix/README b/source/n/postfix/README new file mode 100644 index 00000000..bfb212dd --- /dev/null +++ b/source/n/postfix/README @@ -0,0 +1,25 @@ +Postfix is Wietse Venema's mailer that started life as an alternative to the +widely-used Sendmail program. It attempts to be fast, easy to administer, and +secure, while at the same time, being sendmail compatible enough to not upset +existing users. Thus, the outside has a sendmail-ish flavor, but the inside is +completely different. + +This script builds postfix with support for Dovecot SASL, Cyrus SASL, and +TLS (using OpenSSL.) Support for Berkeley DB hash and btree maps, being a +Postfix requirement, is also detected and built. + +In addition database plugins are built for LDAP, MySQL, PCRE and sqlite3. To +add support for additional database plugins which are not provided in +Slackware, such as CDB or PostgreSQL, it is necessary to recompile this +package. See the comments in the SlackBuild script to get started. + +Postfix manual sections follow the BSD standard, where section 8 is only for +daemons, and all user commands, even root-user-only administrative commands +such as postfix(1), are in section 1. + +Postfix is exceptionally well documented. If you put a link to your +html_directory (/usr/doc/postfix/html) somewhere you can find it in your +favorite browser, all of this will be readily available to you. The place +to start is not with man pages, but with the various READMEs, all HTMLified +and with convenient hyperlinks to the relevant anchors in the HTML versions +of the manuals. diff --git a/source/n/postfix/doinst.sh b/source/n/postfix/doinst.sh new file mode 100644 index 00000000..e67f7ea1 --- /dev/null +++ b/source/n/postfix/doinst.sh @@ -0,0 +1,76 @@ +config() { + NEW="$1" + OLD="$(dirname $NEW)/$(basename $NEW .new)" + # If there's no config file by that name, mv it over: + if [ ! -r $OLD ]; then + mv $NEW $OLD + elif [ "$(cat $OLD | md5sum)" = "$(cat $NEW | md5sum)" ]; then + # toss the redundant copy + rm $NEW + fi + # Otherwise, we leave the .new copy for the admin to consider... +} + +preserve_perms() { + NEW="$1" + OLD="$(dirname $NEW)/$(basename $NEW .new)" + if [ -e $OLD ]; then + cp -a $OLD ${NEW}.incoming + cat $NEW > ${NEW}.incoming + mv ${NEW}.incoming $NEW + fi + config $NEW +} + +# Make sure that the postfix user (UID 91, GID 91), and the +# postdrop group (GID 92) exist on this system: +if ! grep -q "^postfix:" etc/passwd ; then + echo "postfix:x:91:91:User for Postfix MTA:/dev/null:/bin/false" >> etc/passwd +fi +if ! grep -q "^postfix:" etc/group ; then + echo "postfix:x:91:" >> etc/group +fi +if ! grep -q "^postdrop:" etc/group ; then + echo "postdrop:x:92:" >> etc/group +fi + +find etc/postfix -type f -name '*.new' | while read new ; do + config $new +done +preserve_perms etc/rc.d/rc.postfix.new +config etc/aliases.new + +# Don't keep aliases.new. If it exists, the user already defined aliases. +rm -f etc/aliases.new + +# No reason to keep these: upgrade-configuration will take care of merging +# changes needed to the existing files +rm -f etc/postfix/main.cf.new etc/postfix/master.cf.new + +# This is for backward compatibility with the old Sendmail package; some +# software might still expect to find the /usr/lib/sendmail link. +if [ ! -d usr/lib ]; then +mkdir -p usr/lib +( cd usr/lib ; rm -f sendmail ) +( cd usr/lib ; ln -s /usr/sbin/sendmail sendmail) +fi + +## COMMENTED OUT +## (The Slackware package should ship with correct permissions) +## +## This will set the permissions on all postfix files correctly +#if [ -x usr/sbin/postfix ]; then +# chroot . /usr/sbin/postfix set-permissions +#fi + +# The upgrade-configuration command will add any necessary new settings to +# existing config files (/etc/postfix/{main,master}.cf). It won't hurt +# anything on a new install. +if [ -x usr/sbin/postfix ]; then + chroot . /usr/sbin/postfix upgrade-configuration +fi + +# Process /etc/aliases into a database: +if [ -x usr/bin/newaliases ]; then + chroot . /usr/bin/newaliases +fi diff --git a/source/n/postfix/postfix.SlackBuild b/source/n/postfix/postfix.SlackBuild new file mode 100755 index 00000000..54304571 --- /dev/null +++ b/source/n/postfix/postfix.SlackBuild @@ -0,0 +1,230 @@ +#!/bin/bash +# +# Copyright 2006, 2011 Alan Hicks, Lizella, GA +# Copyright 2010, 2011, 2013, 2014, 2015, 2016, 2017 Mario Preksavec, Zagreb, Croatia +# Copyright 2017, 2018 Patrick J. Volkerding, Sebeka, MN USA +# All rights reserved. +# +# Redistribution and use of this script, with or without modification, is +# permitted provided that the following conditions are met: +# +# 1. Redistributions of this script must retain the above copyright +# notice, this list of conditions and the following disclaimer. +# +# THIS SOFTWARE IS PROVIDED BY THE AUTHOR "AS IS" AND ANY EXPRESS OR IMPLIED +# WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF +# MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO +# EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, +# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, +# PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; +# OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, +# WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR +# OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF +# ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + +# (Thanks also to /dev/rob0 somewhere on the Internet) + +cd $(dirname $0) ; CWD=$(pwd) + +PKGNAM=postfix +VERSION=${VERSION:-$(echo $PKGNAM-*.tar.?z | rev | cut -f 3- -d . | cut -f 1 -d - | rev)} +BUILD=${BUILD:-1} + +if [ -z "$ARCH" ]; then + case "$( uname -m )" in + i?86) ARCH=i586 ;; + arm*) ARCH=arm ;; + *) ARCH=$( uname -m ) ;; + esac +fi + +# If the variable PRINT_PACKAGE_NAME is set, then this script will report what +# the name of the created package would be, and then exit. This information +# could be useful to other scripts. +if [ ! -z "${PRINT_PACKAGE_NAME}" ]; then + echo "$PKGNAM-$VERSION-$ARCH-$BUILD.txz" + exit 0 +fi + +TMP=${TMP:-/tmp} +PKG=$TMP/package-$PKGNAM +OUTPUT=${OUTPUT:-/tmp} + +if [ "$ARCH" = "i586" ]; then + SLKCFLAGS="-O2 -march=i586 -mtune=i686" + LIBDIRSUFFIX="" +elif [ "$ARCH" = "i686" ]; then + SLKCFLAGS="-O2 -march=i686 -mtune=i686" + LIBDIRSUFFIX="" +elif [ "$ARCH" = "x86_64" ]; then + SLKCFLAGS="-O2 -fPIC" + LIBDIRSUFFIX="64" +else + SLKCFLAGS="-O2" + LIBDIRSUFFIX="" +fi + +NUMJOBS=${NUMJOBS:-" -j7 "} + +if [ "$(grep "^postfix:x:91:91" /etc/passwd)" = "" -o \ + "$(grep "^postfix:x:91:" /etc/group)" = "" -o \ + "$(grep "^postdrop:x:92:" /etc/group)" = "" ]; then +cat << EOF +The postfix user/group and/or the postdrop group do not exist on this system. +Before running this script, please add them with the following commands: + +groupadd -g 91 postfix +useradd -u 91 -d /dev/null -s /bin/false -g postfix postfix +groupadd -g 92 postdrop + +EOF +exit 1 +fi + +rm -rf $PKG +mkdir -p $TMP $PKG $OUTPUT +cd $TMP +rm -rf $PKGNAM-$VERSION +tar xvf $CWD/$PKGNAM-$VERSION.tar.?z || exit 1 +cd $PKGNAM-$VERSION || exit 1 + +chown -R root:root . +find -L . \ + \( -perm 777 -o -perm 775 -o -perm 750 -o -perm 711 -o -perm 555 \ + -o -perm 511 \) -exec chmod 755 {} \; -o \ + \( -perm 666 -o -perm 664 -o -perm 640 -o -perm 600 -o -perm 444 \ + -o -perm 440 -o -perm 400 \) -exec chmod 644 {} \; + +# Fix postfix-script so that it won't think a symlink in /etc/postfix is +# group writable. Only warn about regular files there. +zcat $CWD/postfix.only.warn.regular.files.diff.gz | patch -p1 --verbose || exit 1 + +# Make the postfix startup message look more like the other boot notices: +zcat $CWD/postfix.script.starting.message.diff.gz | patch -p1 --verbose || exit 1 + +# Postfix does not use a ./configure script (no GNU autoconf) +# +# The AUXLIBS variable is for dynamic library linking, which as of this +# writing is the only means of adding SASL and TLS support. But most map +# types now can be loaded as plugins at runtime. We build our Postfix +# package with LDAP, MySQL, PCRE and sqlite3 plugins. In addition, +# Berkeley DB support (required) is automatically detected and built. + +# Build with SASL support +SASLARGS="-DUSE_SASL_AUTH -I/usr/include/sasl -DUSE_CYRUS_SASL" +SASLLIBS="-L/usr/lib${LIBDIRSUFFIX}/sasl2 -lsasl2" +# Note: this enables both server SASL types (Cyrus and Dovecot) as well as +# client SASL with Cyrus. See SASL_README if you wish to customize this. +# For example, you might not wish to link against Cyrus SASL if not using +# client SASL. For Dovecot (server) SASL only, comment SASLLIBS, and set: +# SASLARGS="-DUSE_SASL_AUTH" + +# Build with TLS support, see TLS_README +TLSARGS="-DUSE_TLS" +TLSLIBS="-lssl -lcrypto" + +# Build with LDAP client support, see LDAP_README +LDAPARGS="-DHAS_LDAP" +# MySQL database support, see MYSQL_README +MYSQLARGS="-I/usr/include/mysql -DHAS_MYSQL" +# PCRE (perl-compatible regular expressions) support, see PCRE_README +PCREARGS="-DHAS_PCRE $( pcre-config --cflags )" +# SQLite3 database support, see SQLITE_README +SQLITEARGS="-DHAS_SQLITE" +# Finally, DBARGS lumps it all together: +DBARGS="$LDAPARGS $MYSQLARGS $PCREARGS $SQLITEARGS" + +### ADDITIONAL MAP TYPE PLUGINS +# +# Those who have installed other map types not included in Slackware could +# add support as follows: +# +# * AUXLIBS_CDB for CDB support, see /usr/doc/postfix/readme/CDB_README +# * AUXLIBS_LMDB for LMDB support, see /usr/doc/postfix/readme/LMDB_README +# * AUXLIBS_PGSQL for PostgreSQL support, see /usr/doc/postfix/readme/PGSQL_README +# * AUXLIBS_SDBM for SDBM support, see /usr/doc/postfix/readme/SDBM_README +# +# Note that each of these additional map types will require additions to +# the CCARGS variable. Typically this would be done by adding what is +# needed to $DBARGS. + +### CHANGING BUILT-IN DOCUMENTATION PATH SETTINGS +# +# If we try to use postfix-$VERSION in any of these paths, we'll get a compile +# failure: "error: too many decimal points in number" +# So we're pretty much forced to leave things as postfix expects them. +PATHARGS="'-DDEF_HTML_DIR=\"/usr/doc/postfix/html\"' \ + '-DDEF_MANPAGE_DIR=\"/usr/man\"' \ + '-DDEF_README_DIR=\"/usr/doc/postfix/readme\"'" + +make $NUMJOBS makefiles dynamicmaps=yes pie=yes shared=yes \ + shlib_directory=/usr/lib${LIBDIRSUFFIX}/postfix/MAIL_VERSION \ + CCARGS="$TLSARGS $SASLARGS $DBARGS $PATHARGS" \ + AUXLIBS="$TLSLIBS $SASLLIBS" \ + AUXLIBS_LDAP="-lldap -llber" \ + AUXLIBS_MYSQL="-L/usr/lib${LIBDIRSUFFIX}/mysql -lmysqlclient -lz -lm" \ + AUXLIBS_PCRE="$( pcre-config --libs )" \ + AUXLIBS_SQLITE="-lsqlite3 -lpthread" \ + OPT="$SLKCFLAGS" DEBUG="" || exit 1 + +# We put our documentation files in version-specific directories, but we'll +# use a symlink to provide the compiled-in path in /usr/doc/postfix/. +mkdir -p $PKG/usr/doc/$PKGNAM-$VERSION +ln -s $PKGNAM-$VERSION $PKG/usr/doc/$PKGNAM + +make non-interactive-package \ + install_root=$PKG \ + tempdir=$TMP/$PKGNAM-temp \ + sample_directory=no || exit 1 + +rm -f $PKG/etc/postfix/{TLS_,}LICENSE + +install -D -m 0644 -oroot -groot $CWD/rc.postfix $PKG/etc/rc.d/rc.postfix.new + +# Add greylist.pl per postfix documentation: +cp -a examples/smtpd-policy/greylist.pl $PKG/usr/libexec/postfix +chown root:root $PKG/usr/libexec/postfix/greylist.pl +chmod 755 $PKG/usr/libexec/postfix/greylist.pl + +# Move configuration files to filename.new: +find $PKG/etc/postfix -type f ! -name "*.default" ! -name "*.proto" ! -name "*.out" \ + ! -name "postfix-files" -exec mv {} {}.new \; + +# The aliases file is expected to be in /etc, so let's put it there: +mv $PKG/etc/postfix/aliases.new $PKG/etc/aliases.new +# Leave a symlink in /etc/postfix to point out this location: +( cd $PKG/etc/postfix ; ln -sf ../aliases . ) + +# Strip binaries: +find $PKG -print0 | xargs -0 file | grep -e "executable" -e "shared object" | grep ELF \ + | cut -f 1 -d : | xargs strip --strip-unneeded 2> /dev/null || true + +# Set proper permissions: +chown root:postdrop $PKG/usr/sbin/{postdrop,postqueue} +chmod 2755 $PKG/usr/sbin/{postdrop,postqueue} +chown postfix:root $PKG/var/lib/postfix +chown -R postfix:root $PKG/var/spool/postfix/* +chown root:root $PKG/var/spool/postfix/pid +chown postfix:postdrop $PKG/var/spool/postfix/{maildrop,public} + +# Compress man pages: +find $PKG/usr/man -type f -exec gzip -9 {} \; +for i in $( find $PKG/usr/man -type l ) ; do ln -s $( readlink $i ).gz $i.gz ; rm $i ; done + +sed -i $PKG/etc/postfix/postfix-files \ + -e 's#\($manpage_directory/man[158]/.\+\.[158]\)\(:.*\)#\1.gz\2#' \ + -e '/$config_directory\/LICENSE:f:root:-:644:1/ d' \ + -e '/$config_directory\/TLS_LICENSE:f:root:-:644:1/ d' + +# Add documentation files: +mkdir -p $PKG/usr/doc/$PKGNAM-$VERSION +cp -a AAAREADME COMPATIBILITY COPYRIGHT HISTORY IPv6-ChangeLog LICENSE PORTING \ + RELEASE_NOTES* TLS_* US_PATENT_* examples implementation-notes \ + $PKG/usr/doc/$PKGNAM-$VERSION + +mkdir -p $PKG/install +cat $CWD/slack-desc > $PKG/install/slack-desc +zcat $CWD/doinst.sh.gz > $PKG/install/doinst.sh + +cd $PKG +/sbin/makepkg -l y -c n --prepend $OUTPUT/$PKGNAM-$VERSION-$ARCH-$BUILD.txz diff --git a/source/n/postfix/postfix.only.warn.regular.files.diff b/source/n/postfix/postfix.only.warn.regular.files.diff new file mode 100644 index 00000000..2b6b788c --- /dev/null +++ b/source/n/postfix/postfix.only.warn.regular.files.diff @@ -0,0 +1,11 @@ +--- ./conf/postfix-script.orig 2016-01-31 15:05:46.000000000 -0600 ++++ ./conf/postfix-script 2017-11-05 15:09:40.838097647 -0600 +@@ -275,7 +275,7 @@ + find $todo ! -user root \ + -exec $WARN not owned by root: {} \; + +- find $todo \( -perm -020 -o -perm -002 \) \ ++ find $todo -type f \( -perm -020 -o -perm -002 \) \ + -exec $WARN group or other writable: {} \; + + # Check Postfix mail_owner-owned directory tree owner/permissions. diff --git a/source/n/postfix/postfix.script.starting.message.diff b/source/n/postfix/postfix.script.starting.message.diff new file mode 100644 index 00000000..8bea3461 --- /dev/null +++ b/source/n/postfix/postfix.script.starting.message.diff @@ -0,0 +1,14 @@ +--- ./conf/postfix-script.orig 2018-02-22 13:13:32.023937591 -0600 ++++ ./conf/postfix-script 2018-02-22 13:15:44.936950017 -0600 +@@ -139,7 +139,10 @@ + # Foreground this so it can be stopped. All inodes are cached. + $daemon_directory/postfix-script check-warn + fi +- $INFO starting the Postfix mail system ++ $INFO starting the Postfix mail system > /dev/null 2> /dev/null ++ # Because this is called during Slackware init, let's make it look ++ # similar to everything else printed on the screen: ++ echo "Starting the Postfix mail system: $command_directory/postfix start" + case $1 in + start) + # NOTE: wait in foreground process to get the initialization status. diff --git a/source/n/postfix/postfix.url b/source/n/postfix/postfix.url new file mode 100644 index 00000000..d0d454bb --- /dev/null +++ b/source/n/postfix/postfix.url @@ -0,0 +1 @@ +ftp://ftp.porcupine.org/mirrors/postfix-release/official/ diff --git a/source/n/postfix/rc.postfix b/source/n/postfix/rc.postfix new file mode 100644 index 00000000..6f583f21 --- /dev/null +++ b/source/n/postfix/rc.postfix @@ -0,0 +1,68 @@ +#!/bin/bash +# Copyright 2006, Alan Hicks, Lizella, GA +# Copyright 2017, Patrick J. Volkerding, Sebeka, MN USA +# All rights reserved. +# +# Redistribution and use of this script, with or without modification, is +# permitted provided that the following conditions are met: +# +# 1. Redistributions of this script must retain the above copyright +# notice, this list of conditions and the following disclaimer. +# +# THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED +# WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF +# MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO +# EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, +# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, +# PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; +# OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, +# WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR +# OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF +# ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. +# + +postfix_start() +{ + /usr/sbin/postfix start +} + +postfix_stop() +{ + /usr/sbin/postfix stop +} + +postfix_restart() +{ + postfix_stop + postfix_start +} + +postfix_reload() +{ + /usr/sbin/postfix reload +} + +postfix_status() +{ + /usr/sbin/postfix status +} + +case $1 in +'start') + postfix_start + ;; +'stop') + postfix_stop + ;; +'restart') + postfix_restart + ;; +'reload') + postfix_reload + ;; +'status') + postfix_status + ;; +*) + echo "usage $0 start|stop|restart|reload|status" +esac diff --git a/source/n/postfix/slack-desc b/source/n/postfix/slack-desc new file mode 100644 index 00000000..0c396404 --- /dev/null +++ b/source/n/postfix/slack-desc @@ -0,0 +1,19 @@ +# HOW TO EDIT THIS FILE: +# The "handy ruler" below makes it easier to edit a package description. +# Line up the first '|' above the ':' following the base package name, and +# the '|' on the right side marks the last column you can put a character in. +# You must make exactly 11 lines for the formatting to be correct. It's also +# customary to leave one space after the ':' except on otherwise blank lines. + + |-----handy-ruler------------------------------------------------------| +postfix: postfix (mail transport and submission agent) +postfix: +postfix: Postfix attempts to be fast, easy to administer, and secure, while at +postfix: the same time being sendmail compatible enough to not upset existing +postfix: users. Thus, the outside has a sendmail-ish flavor, but the inside is +postfix: completely different. +postfix: +postfix: Homepage: http://www.postfix.org +postfix: +postfix: +postfix: |