Initial Commit

.dev_env

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+DATABASE_TYPE=Pg
+DATABASE_HOST=localhost
+DATABASE_NAME=postgres
+DATABASE_USER=fetchmail
+DATABASE_PASSWORD=MySecretPassword

.drone.yml

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+---
+kind: pipeline
+type: kubernetes
+name: linter
+
+platform:
+  os: linux
+  arch: amd64
+
+steps:
+- name: markdown lint
+  commands:
+  - markdownlint *.md
+  image: docker.io/tmknom/markdownlint:0.23.1
+  resources:
+    limits:
+      cpu: 50
+      memory: 50M
+
+- name: email-notification
+  environment:
+    PLUGIN_HOST:
+      from_secret: smtp_host
+    PLUGIN_USERNAME:
+      from_secret: smtp_username
+    PLUGIN_PASSWORD:
+      from_secret: smtp_password
+    PLUGIN_FROM:
+      from_secret: smtp_mail_address
+  image: docker.io/drillster/drone-email:latest
+  resources:
+    limits:
+      cpu: 50
+      memory: 25M
+  when:
+    status:
+    - changed
+    - failure
+
+trigger:
+  event:
+    exclude:
+    - tag
+---
+kind: pipeline
+type: docker
+name: build
+
+platform:
+  os: linux
+  arch: amd64
+
+steps:
+- name: build
+  image: docker.io/volkerraschek/build-image:latest
+  commands:
+  - make container-image/build
+  volumes:
+  - name: docker_socket
+    path: /var/run/docker.sock
+  when:
+    branch:
+    - master
+
+- name: push
+  image: docker.io/volkerraschek/build-image:latest
+  commands:
+  - make container-image/push
+  environment:
+    FETCHMAIL_IMAGE_REGISTRY_PASSWORD:
+      from_secret: container_image_registry_password
+  volumes:
+  - name: docker_socket
+    path: /var/run/docker.sock
+  when:
+    branch:
+    - master
+    repo:
+    - volker.raschek/fetchmail-docker
+
+- name: delete
+  image: docker.io/volkerraschek/build-image:latest
+  commands:
+  - make container-image/delete
+  volumes:
+  - name: docker_socket
+    path: /var/run/docker.sock
+  when:
+    branch:
+    - master
+
+- name: notify
+  image: drillster/drone-email
+  environment:
+    PLUGIN_HOST:
+      from_secret: smtp_host
+    PLUGIN_USERNAME:
+      from_secret: smtp_username
+    PLUGIN_PASSWORD:
+      from_secret: smtp_password
+    PLUGIN_FROM:
+      from_secret: smtp_mail_address
+  when:
+    status:
+    - changed
+    - failure
+
+volumes:
+- name: docker_socket
+  host:
+    path: /var/run/docker.sock
+
+trigger:
+  event:
+    exclude:
+    - tag
+---
+kind: pipeline
+type: kubernetes
+name: sync
+
+platform:
+  os: linux
+  arch: amd64
+
+steps:
+- name: github
+  image: docker.io/appleboy/drone-git-push:latest
+  resources:
+    limits:
+      cpu: 50
+      memory: 25M
+  settings:
+    branch: master
+    remote: ssh://git@github.com/volker-raschek/fetchmail-docker.git
+    force: true
+    ssh_key:
+      from_secret: ssh_key
+
+- name: email-notification
+  environment:
+    PLUGIN_HOST:
+      from_secret: smtp_host
+    PLUGIN_USERNAME:
+      from_secret: smtp_username
+    PLUGIN_PASSWORD:
+      from_secret: smtp_password
+    PLUGIN_FROM:
+      from_secret: smtp_mail_address
+  image: docker.io/drillster/drone-email:latest
+  resources:
+    limits:
+      cpu: 50
+      memory: 25M
+  when:
+    status:
+    - changed
+    - failure
+
+trigger:
+  event:
+  - push
+  repo:
+  - volker.raschek/fetchmail-docker

.editorconfig

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+root = true
+
+[*]
+indent_style = space
+indent_size = 2
+end_of_line = lf
+charset = utf-8
+trim_trailing_whitespace = true
+insert_final_newline = false
+
+[Makefile]
+indent_style = tab

.gitattributes

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+Makefile eol=lf

.gitignore

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+.env

.markdownlint.yaml

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+# markdownlint YAML configuration
+# https://github.com/DavidAnson/markdownlint/blob/main/schema/.markdownlint.yaml
+
+# Default state for all rules
+default: true
+
+# Path to configuration file to extend
+extends: null
+
+# MD003/heading-style/header-style - Heading style
+MD003:
+  # Heading style
+  style: "atx"
+
+# MD004/ul-style - Unordered list style
+MD004:
+  style: "dash"
+
+# MD007/ul-indent - Unordered list indentation
+MD007:
+  # Spaces for indent
+  indent: 2
+  # Whether to indent the first level of the list
+  start_indented: false
+
+# MD009/no-trailing-spaces - Trailing spaces
+MD009:
+  # Spaces for line break
+  br_spaces: 2
+  # Allow spaces for empty lines in list items
+  list_item_empty_lines: false
+  # Include unnecessary breaks
+  strict: false
+
+# MD010/no-hard-tabs - Hard tabs
+MD010:
+  # Include code blocks
+  code_blocks: true
+
+# MD012/no-multiple-blanks - Multiple consecutive blank lines
+MD012:
+  # Consecutive blank lines
+  maximum: 1
+
+# MD013/line-length - Line length
+MD013:
+  # Number of characters
+  line_length: 80
+  # Number of characters for headings
+  heading_line_length: 80
+  # Number of characters for code blocks
+  code_block_line_length: 80
+  # Include code blocks
+  code_blocks: false
+  # Include tables
+  tables: false
+  # Include headings
+  headings: true
+  # Include headings
+  headers: true
+  # Strict length checking
+  strict: false
+  # Stern length checking
+  stern: false
+
+# MD022/blanks-around-headings/blanks-around-headers - Headings should be surrounded by blank lines
+MD022:
+  # Blank lines above heading
+  lines_above: 1
+  # Blank lines below heading
+  lines_below: 1
+
+# MD024/no-duplicate-heading/no-duplicate-header - Multiple headings with the same content
+MD024:
+  # Only check sibling headings
+  allow_different_nesting: true
+
+# MD025/single-title/single-h1 - Multiple top-level headings in the same document
+MD025:
+  # Heading level
+  level: 1
+  # RegExp for matching title in front matter
+  front_matter_title: "^\\s*title\\s*[:=]"
+
+# MD026/no-trailing-punctuation - Trailing punctuation in heading
+MD026:
+  # Punctuation characters
+  punctuation: ".,;:!。，；：！"
+
+# MD029/ol-prefix - Ordered list item prefix
+MD029:
+  # List style
+  style: "one_or_ordered"
+
+# MD030/list-marker-space - Spaces after list markers
+MD030:
+  # Spaces for single-line unordered list items
+  ul_single: 1
+  # Spaces for single-line ordered list items
+  ol_single: 1
+  # Spaces for multi-line unordered list items
+  ul_multi: 1
+  # Spaces for multi-line ordered list items
+  ol_multi: 1
+
+# MD033/no-inline-html - Inline HTML
+MD033:
+  # Allowed elements
+  allowed_elements: []
+
+# MD035/hr-style - Horizontal rule style
+MD035:
+  # Horizontal rule style
+  style: "---"
+
+# MD036/no-emphasis-as-heading/no-emphasis-as-header - Emphasis used instead of a heading
+MD036:
+  # Punctuation characters
+  punctuation: ".,;:!?。，；：！？"
+
+# MD041/first-line-heading/first-line-h1 - First line in a file should be a top-level heading
+MD041:
+  # Heading level
+  level: 1
+  # RegExp for matching title in front matter
+  front_matter_title: "^\\s*title\\s*[:=]"
+
+# MD044/proper-names - Proper names should have the correct capitalization
+MD044:
+  # List of proper names
+  names: []
+  # - some-thing
+  # Include code blocks
+  code_blocks: false
+
+# MD046/code-block-style - Code block style
+MD046:
+  # Block style
+  style: "fenced"
+
+# MD048/code-fence-style - Code fence style
+MD048:
+  # Code fence syle
+  style: "backtick"

Dockerfile

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+FROM docker.io/library/alpine:3.11.2
+
+RUN echo "http://dl-3.alpinelinux.org/alpine/edge/testing/" >> /etc/apk/repositories
+RUN apk add --update perl perl-lockfile-simple perl-dbi perl-dbd-pg perl-dbd-mysql fetchmail
+RUN mkdir --parents /run/fetchmail
+
+COPY --chown=fetchmail:fetchmail fetchmail.pl /usr/local/bin/fetchmail.pl
+
+USER fetchmail
+
+ENTRYPOINT [ "/usr/bin/perl" ]
+CMD [ "/usr/local/bin/fetchmail.pl" ]

LICENSE

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+Copyright 2019 Markus Pesch
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.

Makefile

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+# CONTAINER_RUNTIME
+# The CONTAINER_RUNTIME variable will be used to specified the path to a
+# container runtime. This is needed to start and run a container image.
+CONTAINER_RUNTIME?=$(shell which docker)
+
+# FETCHMAIL_IMAGE_REGISTRY_NAME
+# Defines the name of the new container to be built using several variables.
+FETCHMAIL_IMAGE_REGISTRY_NAME:=docker.io
+FETCHMAIL_IMAGE_REGISTRY_USER:=volkerraschek
+
+FETCHMAIL_IMAGE_NAMESPACE?=${FETCHMAIL_IMAGE_REGISTRY_USER}
+FETCHMAIL_IMAGE_NAME:=fetchmail
+FETCHMAIL_IMAGE_VERSION?=latest
+FETCHMAIL_IMAGE_FULLY_QUALIFIED=${FETCHMAIL_IMAGE_REGISTRY_NAME}/${FETCHMAIL_IMAGE_NAMESPACE}/${FETCHMAIL_IMAGE_NAME}:${FETCHMAIL_IMAGE_VERSION}
+FETCHMAIL_IMAGE_UNQUALIFIED=${FETCHMAIL_IMAGE_NAMESPACE}/${FETCHMAIL_IMAGE_NAME}:${FETCHMAIL_IMAGE_VERSION}
+
+# BUILD CONTAINER IMAGE
+# ==============================================================================
+PHONY:=container-image/build
+container-image/build:
+	${CONTAINER_RUNTIME} build \
+		--file Dockerfile \
+		--no-cache \
+		--pull \
+		--tag ${FETCHMAIL_IMAGE_FULLY_QUALIFIED} \
+		--tag ${FETCHMAIL_IMAGE_UNQUALIFIED} \
+		.
+
+# DELETE CONTAINER IMAGE
+# ==============================================================================
+PHONY:=container-image/delete
+container-image/delete:
+	- ${CONTAINER_RUNTIME} image rm ${FETCHMAIL_IMAGE_FULLY_QUALIFIED} ${FETCHMAIL_IMAGE_UNQUALIFIED}
+	- ${CONTAINER_RUNTIME} image rm ${BASE_IMAGE_FULL}
+
+# PUSH CONTAINER IMAGE
+# ==============================================================================
+PHONY+=container-image/push
+container-image/push:
+	echo ${FETCHMAIL_IMAGE_REGISTRY_PASSWORD} | ${CONTAINER_RUNTIME} login ${FETCHMAIL_IMAGE_REGISTRY_NAME} --username ${FETCHMAIL_IMAGE_REGISTRY_USER} --password-stdin
+	${CONTAINER_RUNTIME} push ${FETCHMAIL_IMAGE_FULLY_QUALIFIED}
+
+# PHONY
+# ==============================================================================
+# Declare the contents of the PHONY variable as phony.  We keep that information
+# in a variable so we can use it in if_changed.
+.PHONY: ${PHONY}

README.md

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+# fetchmail-docker
+
+[![Build Status](https://drone.cryptic.systems/api/badges/volker.raschek/fetchmail-docker/status.svg)](https://drone.cryptic.systems/volker.raschek/fetchmail-docker)
+[![Docker Pulls](https://img.shields.io/docker/pulls/volkerraschek/fetchmail)](https://hub.docker.com/r/volkerraschek/fetchmail)
+
+This project contains all sources to build the container image
+`docker.io/volkerraschek/fetchmail`. The primary goal of the image is to fetch
+mails from external servers and forward them to on local running mail server.
+
+The configuration file will be automatically generated based on information from
+a database. As table the fetchmail table from the schema of
+[postfixadmin](https://github.com/postfixadmin/postfixadmin) is expected.
+
+## Usage
+
+Possible database types are `my` for MySQL and `Pg` for postgres. Make sure that
+the database and the SMTP server are accessible. Otherwise, adjust the enclosed
+docker-compose or docker command accordingly. Alternatively you can use
+docker-compose in addition to the docker commands.
+
+### PostgreSQL
+
+```bash
+$ docker run \
+  --rm \
+  --env DATABASE_TYPE: Pg \
+  --env DATABASE_HOST: postgres \
+  --env DATABASE_NAME: postgres \
+  --env DATABASE_USER: fetchmail \
+  --env DATABASE_PASSWORD: MySecretPassword \
+  --network host \
+  volkerraschek/fetchmail:latest
+```
+
+### MySQL
+
+```bash
+$ docker run \
+  --rm \
+  --env DATABASE_TYPE: my \
+  --env DATABASE_HOST: root \
+  --env DATABASE_NAME: mysql \
+  --env DATABASE_USER: fetchmail \
+  --env DATABASE_PASSWORD: MySecretPassword \
+  --network host \
+  volkerraschek/fetchmail:latest
+```
+
+### docker-compose
+
+The repository contains a default `docker-compose.yml` file, which can be used
+to start the container. To set the environment variables you need a `.env` file.
+The `.dev_env` from this repository can be used for this. This must be located
+exclusively in the same directory as the `docker-compose.yml` file and must be
+renamed as `.env`.
+
+```yml
+version: "3"
+services:
+  fetchmail:
+    image: volkerraschek/fetchmail:latest
+    environment:
+    - DATABASE_TYPE=${DATABASE_TYPE}
+    - DATABASE_HOST=${DATABASE_HOST}
+    - DATABASE_NAME=${DATABASE_NAME}
+    - DATABASE_USER=${DATABASE_USER}
+    - DATABASE_PASSWORD=${DATABASE_PASSWORD}
+    network_mode: host
+```
+
+## Build container image manually
+
+To build the images manually check out the repository on
+[github](https://github.com/volker-raschek/fetchmail-docker) with git and use
+the make command to build the container image.
+
+```bash
+make container-image/build
+```

docker-compose.yml

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+version: "3"
+services:
+  fetchmail:
+    container_name: fetchmail
+    image: volkerraschek/fetchmail-docker:latest
+    environment:
+    - DATABASE_TYPE=${DATABASE_TYPE}
+    - DATABASE_HOST=${DATABASE_HOST}
+    - DATABASE_NAME=${DATABASE_NAME}
+    - DATABASE_USER=${DATABASE_USER}
+    - DATABASE_PASSWORD=${DATABASE_PASSWORD}
+    network_mode: host

fetchmail.pl

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+#!/usr/bin/perl
+
+use DBI;
+use MIME::Base64;
+# use Data::Dumper;
+use File::Temp qw/ mkstemp /;
+use Sys::Syslog;
+# require liblockfile-simple-perl
+use LockFile::Simple qw(lock trylock unlock);
+
+######################################################################
+########## Change the following variables to fit your needs ##########
+
+# database settings
+
+# database backend - uncomment one of these
+our $db_type=$ENV{'DATABASE_TYPE'};
+our $db_host=$ENV{'DATABASE_HOST'};
+our $db_name=$ENV{'DATABASE_NAME'};
+our $db_username=$ENV{'DATABASE_USER'};
+our $db_password=$ENV{'DATABASE_PASSWORD'};
+
+# instead of changing this script, you can put your settings to /etc/mail/postfixadmin/fetchmail.conf
+# just use perl syntax there to fill the variables listed above (without the "our" keyword). Example:
+# $db_username = 'mail';
+if (-f "/etc/mail/postfixadmin/fetchmail.conf") {
+  require "/etc/mail/postfixadmin/fetchmail.conf";
+}
+
+#################### Don't change anything below! ####################
+######################################################################
+
+openlog("fetchmail-all", "pid", "mail");
+
+sub log_and_die {
+  my($message) = @_;
+  syslog("err", $message);
+  die $message;
+}
+
+# read options and arguments
+
+$configfile = "/etc/fetchmail-all/config";
+
+@ARGS1 = @ARGV;
+
+while ($_ = shift @ARGS1) {
+    if (/^-/) {
+        if (/^--config$/) {
+            $configfile = shift @ARGS1
+        }
+    }
+}
+
+$run_dir="/run/fetchmail";
+
+# use specified config file
+if (-e $configfile) {
+    do $configfile;
+}
+
+if($db_type eq "Pg" || $db_type eq "mysql") {
+  $dsn = "DBI:$db_type:database=$db_name;host=$db_host";
+} else {
+  log_and_die "unsupported db_type $db_type";
+}
+
+$lock_file=$run_dir . "/fetchmail-all.lock";
+
+$lockmgr = LockFile::Simple->make(-autoclean => 1, -max => 1);
+$lockmgr->lock($lock_file) || log_and_die "can't lock ${lock_file}";
+
+# database connect
+$dbh = DBI->connect($dsn, $db_username, $db_password) || log_and_die "cannot connect the database";
+
+if($db_type eq "Pg") {
+  $sql_cond = "active = 't' AND date_part('epoch',now())-date_part('epoch',date)";
+} elsif($db_type eq "mysql") {
+  $sql_cond = "active = 1 AND unix_timestamp(now())-unix_timestamp(date)";
+}
+
+$sql = "
+  SELECT id,mailbox,src_server,src_auth,src_user,src_password,src_folder,fetchall,keep,protocol,mda,extra_options,usessl, sslcertck, sslcertpath, sslfingerprint
+  FROM fetchmail
+  WHERE $sql_cond  > poll_time*60
+  ";
+
+my (%config);
+map{
+  my ($id,$mailbox,$src_server,$src_auth,$src_user,$src_password,$src_folder,$fetchall,$keep,$protocol,$mda,$extra_options,$usessl,$sslcertck,$sslcertpath,$sslfingerprint)=@$_;
+
+  syslog("info","fetch ${src_user}@${src_server} for ${mailbox}");
+
+  $cmd="user '${src_user}' there with password '".decode_base64($src_password)."'";
+  $cmd.=" folder '${src_folder}'" if ($src_folder);
+  $cmd.=" mda ".$mda if ($mda);
+
+#	$cmd.=" mda \"/usr/local/libexec/dovecot/deliver -m ${mailbox}\"";
+  $cmd.=" is '${mailbox}' here";
+
+  $cmd.=" keep" if ($keep);
+  $cmd.=" fetchall" if ($fetchall);
+  $cmd.=" ssl" if ($usessl);
+  $cmd.=" sslcertck" if($sslcertck);
+  $cmd.=" sslcertpath $sslcertpath" if ($sslcertck && $sslcertpath);
+  $cmd.=" sslfingerprint \"$sslfingerprint\"" if ($sslfingerprint);
+  $cmd.=" ".$extra_options if ($extra_options);
+
+  $text=<<TXT;
+set postmaster "postmaster"
+set nobouncemail
+set no spambounce
+set properties ""
+set syslog
+
+poll ${src_server} with proto ${protocol}
+  $cmd
+
+TXT
+
+  ($file_handler, $filename) = mkstemp( "/tmp/fetchmail-all-XXXXX" ) or log_and_die "cannot open/create fetchmail temp file";
+  print $file_handler $text;
+  close $file_handler;
+
+  $ret=`/usr/bin/fetchmail -f $filename -i $run_dir/fetchmail.pid`;
+
+  unlink $filename;
+
+  $sql="UPDATE fetchmail SET returned_text=".$dbh->quote($ret).", date=now() WHERE id=".$id;
+  $dbh->do($sql);
+}@{$dbh->selectall_arrayref($sql)};
+
+$lockmgr->unlock($lock_file);
+closelog();