├── Dockerfile ├── LICENSE ├── README.md ├── boot.sh ├── build.sh ├── create_config.exp ├── no-ip-hernandito.png ├── noip.conf ├── noip.sh └── parse_config_file.sh /Dockerfile: -------------------------------------------------------------------------------- 1 | FROM alpine:3.7 2 | 3 | MAINTAINER David Coppit 4 | 5 | ENV TERM=xterm-256color 6 | 7 | RUN true && \ 8 | \ 9 | echo "http://dl-cdn.alpinelinux.org/alpine/v3.7/community" >> /etc/apk/repositories && \ 10 | apk --update upgrade && \ 11 | \ 12 | # Basics, including runit 13 | apk add bash curl htop runit && \ 14 | \ 15 | # Needed by our code 16 | apk add expect libc6-compat && \ 17 | \ 18 | rm -rf /var/cache/apk/* && \ 19 | \ 20 | # RunIt stuff 21 | adduser -h /home/user-service -s /bin/sh -D user-service -u 2000 && \ 22 | chown user-service:user-service /home/user-service && \ 23 | mkdir -p /etc/run_once /etc/service 24 | 25 | # Boilerplate startup code 26 | COPY ./boot.sh /sbin/boot.sh 27 | RUN chmod +x /sbin/boot.sh 28 | CMD [ "/sbin/boot.sh" ] 29 | 30 | VOLUME ["/config"] 31 | 32 | ADD https://www.noip.com/client/linux/noip-duc-linux.tar.gz /files/ 33 | 34 | RUN set -x \ 35 | && chmod a+rwX /files \ 36 | && tar -C /files -x -f /files/noip-duc-linux.tar.gz noip-2.1.9-1/binaries/noip2-x86_64 \ 37 | && mv /files/noip-2.1.9-1/binaries/noip2-x86_64 /files \ 38 | && rm -rf /files/noip-2.1.9-1 /files/noip-duc-linux.tar.gz 39 | 40 | COPY ["noip.conf", "create_config.exp", "/files/"] 41 | 42 | # run-parts ignores files with "." in them 43 | COPY parse_config_file.sh /etc/run_once/parse_config_file 44 | RUN chmod +x /etc/run_once/parse_config_file 45 | 46 | COPY noip.sh /etc/service/noip/run 47 | RUN chmod +x /etc/service/noip/run 48 | -------------------------------------------------------------------------------- /LICENSE: -------------------------------------------------------------------------------- 1 | GNU GENERAL PUBLIC LICENSE 2 | Version 2, June 1991 3 | 4 | Copyright (C) 1989, 1991 Free Software Foundation, Inc., 5 | 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA 6 | Everyone is permitted to copy and distribute verbatim copies 7 | of this license document, but changing it is not allowed. 8 | 9 | Preamble 10 | 11 | The licenses for most software are designed to take away your 12 | freedom to share and change it. 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Of course, the commands you use may 322 | be called something other than `show w' and `show c'; they could even be 323 | mouse-clicks or menu items--whatever suits your program. 324 | 325 | You should also get your employer (if you work as a programmer) or your 326 | school, if any, to sign a "copyright disclaimer" for the program, if 327 | necessary. Here is a sample; alter the names: 328 | 329 | Yoyodyne, Inc., hereby disclaims all copyright interest in the program 330 | `Gnomovision' (which makes passes at compilers) written by James Hacker. 331 | 332 | {signature of Ty Coon}, 1 April 1989 333 | Ty Coon, President of Vice 334 | 335 | This General Public License does not permit incorporating your program into 336 | proprietary programs. If your program is a subroutine library, you may 337 | consider it more useful to permit linking proprietary applications with the 338 | library. If this is what you want to do, use the GNU Lesser General 339 | Public License instead of this License. 340 | -------------------------------------------------------------------------------- /README.md: -------------------------------------------------------------------------------- 1 | docker-no-ip 2 | ============ 3 | 4 | This is a simple Docker container for running the [No-IP2](http://www.noip.com/) dynamic DNS update script. It will keep 5 | your domain.ddns.net DNS alias up-to-date as your home IP changes. 6 | 7 | Usage 8 | ----- 9 | 10 | This docker image is available as a [trusted build on the docker index](https://index.docker.io/u/coppit/no-ip/). 11 | 12 | There are two modes of running this container. The first is with environment variables: 13 | 14 | `sudo docker run --name=noip -d -v /etc/localtime:/etc/localtime -v /config/dir/path:/config -e USERNAME= -e PASSWORD= -e DOMAINS= -e INTERVAL= coppit/no-ip` 15 | 16 | The second mode is with a config file. To create a template config file, run: 17 | 18 | `sudo docker run --name=noip -d -v /etc/localtime:/etc/localtime -v /config/dir/path:/config coppit/no-ip` 19 | 20 | When run for the first time, a file named noip.conf will be created in the config dir, and the container will exit. Edit 21 | this file, adding your username (email), password, domains, and update interval. Then rerun the command to start the 22 | container. 23 | 24 | In both modes, a binary config file /config/dir/path/no-ip2.generated.conf will be generated. Please do not edit this 25 | file, as it is used by the noip2 agent. Please do not edit this file, as it is used by the noip2 agent. 26 | 27 | To check the status, run `docker logs noip`. 28 | -------------------------------------------------------------------------------- /boot.sh: -------------------------------------------------------------------------------- 1 | #!/bin/sh 2 | 3 | # Based on https://github.com/sanjeevan/baseimage 4 | 5 | shutdown() { 6 | echo 7 | echo "Shutting down container..." 8 | 9 | # first shutdown any service started by runit 10 | for _srv in $(ls -1 /etc/service); do 11 | sv force-stop $_srv 12 | done 13 | 14 | # shutdown runsvdir command 15 | kill -HUP $RUNSVDIR 16 | wait $RUNSVDIR 17 | 18 | # give processes time to stop 19 | sleep 0.5 20 | 21 | # kill any other processes still running in the container 22 | for _pid in $(ps -eo pid | grep -v PID | tr -d ' ' | grep -v '^1$' | head -n -6); do 23 | timeout -t 5 /bin/sh -c "kill $_pid && wait $_pid || kill -9 $_pid" 24 | done 25 | 26 | exit 27 | } 28 | 29 | # catch shutdown signals 30 | trap shutdown SIGTERM SIGHUP SIGQUIT SIGINT 31 | 32 | # store environment variables 33 | export > /etc/envvars 34 | 35 | PATH=/bin:/sbin:/usr/bin 36 | 37 | # run all scripts in the run_once folder 38 | if ! /bin/run-parts /etc/run_once 39 | then 40 | echo "Run-once scripts failed. Stopping container" 41 | shutdown 42 | fi 43 | 44 | exec env - PATH=$PATH runsvdir -P /etc/service & 45 | 46 | RUNSVDIR=$! 47 | echo "Started runsvdir, PID is $RUNSVDIR. Waiting for processes to start...." 48 | 49 | sleep 5 50 | for _srv in $(ls -1 /etc/service); do 51 | sv status $_srv 52 | done 53 | 54 | wait $RUNSVDIR 55 | 56 | shutdown 57 | -------------------------------------------------------------------------------- /build.sh: -------------------------------------------------------------------------------- 1 | #!/usr/bin/bash 2 | docker build --rm=true -t coppit/no-ip . 3 | -------------------------------------------------------------------------------- /create_config.exp: -------------------------------------------------------------------------------- 1 | #!/usr/bin/expect 2 | 3 | # An expect script to automate the creation of the config file for noip2. 4 | 5 | if {$argc != 4} { 6 | send_error "\nERROR: Pass arguments .\n" 7 | exit 1 8 | } 9 | 10 | set email [lindex $argv 0] 11 | set password [lindex $argv 1] 12 | # This can be a single domain name, a comma-delimited list, or a group name 13 | set domains [split [lindex $argv 2] ","] 14 | set interval [lindex $argv 3] 15 | 16 | set config_file "/config/no-ip2.generated.conf" 17 | 18 | spawn /files/noip2-x86_64 -C -c $config_file 19 | 20 | expect "Please enter the login/email string for no-ip.com" 21 | send "$email\r" 22 | 23 | expect "Please enter the password for user" 24 | send "$password\r" 25 | 26 | set number_updated 0 27 | 28 | expect { 29 | timeout { send_user "\nERROR: Timed out looking for host information\n"; exit 1 } 30 | 31 | eof { send_user "\nERROR: Hit EOF looking for host information\n"; exit 1 } 32 | 33 | # The case where there are no registered domains 34 | "No hosts are available for this user" { 35 | send_error "\nERROR: No domains registered to the account ($domains).\n" 36 | send_error "Please visit the No-Ip website and create one.\n" 37 | exit 2 38 | } 39 | 40 | # If there is only one group or host, verify that it's the one we want to update 41 | -re "Only one (.*) \\\[(.*)\\\] is registered to this account" { 42 | if {[llength $domains] != 1} { 43 | send_error "\nThere is only one registered host or group, but more than one was provided to be updated.\n" 44 | exit 2 45 | } elseif {$expect_out(2,string) != [lindex $domains 0]} { 46 | send_error "\nERROR: $expect_out(1,string) registered to the account ($expect_out(2,string)) does not match expected value ($domains).\n" 47 | send_error "Check your local config file and No-Ip website config.\n" 48 | send_error "If $domains is a host name, then remove the group in the No-Ip website, or change to use the group here.\n" 49 | exit 1 50 | } else { 51 | send_user "\nThere is only one registered $expect_out(1,string), and it is the expected one\n" 52 | incr number_updated 53 | } 54 | } 55 | 56 | # If there are multiple hosts and groups, then we need to loop over them 57 | "Do you wish to have them all updated?" { 58 | send "n" 59 | 60 | # Start looking for a matching host or group 61 | expect { 62 | timeout { send_user "\nERROR: Timed out processing registered hosts and groups one-by-one\n"; exit 1 } 63 | 64 | eof { send_user "\nERROR: Hit EOF processing hosts and groups one-by-one\n"; exit 1 } 65 | 66 | -re "Do you wish to have .* \\\[(.*)\\\] updated" { 67 | # Matching group found, so answer "y" 68 | if {[lsearch $domains $expect_out(1,string)] != -1} { 69 | send "y" 70 | incr number_updated 71 | exp_continue 72 | # Not a match, so answer "n" 73 | } else { 74 | send "n" 75 | exp_continue 76 | } 77 | } 78 | 79 | # If we don't find a match, exit. Check for errors afterward 80 | "Nothing selected" { } 81 | 82 | # If we do find a match, the noip2 will prompt for the update interval 83 | "Please enter an update interval" { } 84 | } 85 | } 86 | } 87 | 88 | if {[llength $domains] != $number_updated} { 89 | send_error "\n[llength $domains] hosts or groups were supposed to be updated, but only $number_updated were found\n" 90 | exit 2 91 | } 92 | 93 | send "$interval\r" 94 | 95 | expect "Do you wish to run something at successful update" 96 | send "n" 97 | 98 | send_user "\nFinished creating config file\n" 99 | 100 | close 101 | -------------------------------------------------------------------------------- /no-ip-hernandito.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/coppit/docker-no-ip/05d32d9cd4ae6c1fed5213728b56e1b1004e8128/no-ip-hernandito.png -------------------------------------------------------------------------------- /noip.conf: -------------------------------------------------------------------------------- 1 | # This is an email address 2 | USERNAME='email@example.com' 3 | 4 | PASSWORD='your password here' 5 | 6 | # Your hostname, group name, or a comma-delimited list of a mix of them. 7 | DOMAINS='foo.ddns.net' 8 | 9 | # Examples: 5 m, 5 h, 5 d. Minimum is 5 minutes. 10 | INTERVAL='30m' 11 | -------------------------------------------------------------------------------- /noip.sh: -------------------------------------------------------------------------------- 1 | #!/bin/bash 2 | 3 | GENERATED_CONFIG_FILE=/config/no-ip2.generated.conf 4 | 5 | #----------------------------------------------------------------------------------------------------------------------- 6 | 7 | function ts { 8 | echo [`date '+%b %d %X'`] 9 | } 10 | 11 | #----------------------------------------------------------------------------------------------------------------------- 12 | 13 | while true 14 | do 15 | echo "$(ts) Launching the noip2 daemon" 16 | /files/noip2-x86_64 -c "$GENERATED_CONFIG_FILE" 17 | 18 | # Give it a few seconds to do the first update. This helps avoid questions about "Last IP Address set 0.0.0.0" 19 | sleep 5 20 | 21 | while true 22 | do 23 | output=$(/files/noip2-x86_64 -c "$GENERATED_CONFIG_FILE" -S 2>&1) 24 | 25 | echo "$(ts) Current status" 26 | echo "$output" 27 | 28 | if [[ "$output" != *"started as"* ]]; then 29 | echo "$(ts) ERROR: noip2 daemon has stopped running. Restarting it in 60 seconds." 30 | sleep 60 31 | break 32 | fi 33 | 34 | sleep 60 35 | done 36 | done 37 | -------------------------------------------------------------------------------- /parse_config_file.sh: -------------------------------------------------------------------------------- 1 | #!/bin/bash 2 | 3 | # Container-specific stuff first 4 | 5 | REQUIRED_SETTINGS="USERNAME PASSWORD DOMAINS" 6 | DEFAULT_SETTINGS="INTERVAL=30m DEBUG=false" 7 | 8 | TEMPLATE_CONFIG_FILE=/files/noip.conf 9 | CONFIG_FILE=/config/noip.conf 10 | GENERATED_CONFIG_FILE=/config/no-ip2.generated.conf 11 | BREADCRUMB_FILE=/config/no-ip2.generated.conf.breadcrumb 12 | 13 | EXPECT_SCRIPT=/files/create_config.exp 14 | 15 | #----------------------------------------------------------------------------------------------------------------------- 16 | 17 | validate_values() { 18 | if [ $(all_required_settings_exist) != true ] 19 | then 20 | echo "Missing required settings, which must be provided in the config file or by environment variables:" 21 | echo "$REQUIRED_SETTINGS" 22 | exit 0 23 | fi 24 | 25 | if [[ ! "$INTERVAL" =~ ^[0-9]+[mhd]$ ]]; then 26 | echo "INTERVAL must be a number followed by m, h, or d. Example: 5m" 27 | exit 2 28 | fi 29 | 30 | if [[ "${INTERVAL: -1}" == 'm' && "${INTERVAL:0:-1}" -lt 5 ]]; then 31 | echo "The shortest allowed INTERVAL is 5 minutes" 32 | exit 2 33 | fi 34 | 35 | if [ ${INTERVAL: -1} == 'm' ] 36 | then 37 | INTERVAL="${INTERVAL:: -1}" 38 | elif [ ${INTERVAL: -1} == 'h' ] 39 | then 40 | INTERVAL="$((${INTERVAL:: -1} * 60))" 41 | # Days 42 | else 43 | INTERVAL="$((${INTERVAL:: -1} * 60 * 24))" 44 | fi 45 | } 46 | 47 | #----------------------------------------------------------------------------------------------------------------------- 48 | 49 | print_config() { 50 | echo "Configuration:" 51 | echo " USERNAME=$USERNAME" 52 | echo " PASSWORD=" 53 | echo " DOMAINS=$DOMAINS" 54 | echo " INTERVAL=$INTERVAL" 55 | echo " DEBUG=$DEBUG" 56 | } 57 | 58 | #----------------------------------------------------------------------------------------------------------------------- 59 | 60 | generate_binary_config() { 61 | current_expect_script_md5=$(md5sum "$EXPECT_SCRIPT" | awk '{print $1}') 62 | current_md5=$(echo "$current_expect_script_md5|$USERNAME|$PASSWORD|$DOMAINS|$INTERVAL" | md5sum | awk '{print $1}') 63 | 64 | if [[ -f "$BREADCRUMB_FILE" ]] 65 | then 66 | breadcrumb_md5=$(cat "$BREADCRUMB_FILE") 67 | else 68 | breadcrumb_md5="" 69 | fi 70 | 71 | if [[ "$current_md5" == "$breadcrumb_md5" ]] 72 | then 73 | echo "Settings have not changed, so no need to regenerate the binary config file." 74 | return 75 | fi 76 | 77 | if ! expect "$EXPECT_SCRIPT" "$USERNAME" "$PASSWORD" "$DOMAINS" "$INTERVAL" 78 | then 79 | echo "Failed to create noip2 configuration file $GENERATED_CONFIG_FILE. Exiting" 80 | exit 4 81 | fi 82 | 83 | echo -n "$current_md5" > "$BREADCRUMB_FILE" 84 | } 85 | 86 | ######################################################################################################################## 87 | 88 | ENV_VARS=/etc/envvars 89 | MERGED_ENV_VARS=/etc/envvars.merged 90 | 91 | #----------------------------------------------------------------------------------------------------------------------- 92 | 93 | all_required_settings_exist() { 94 | ALL_REQUIRED_SETTINGS_EXIST=true 95 | for required_setting in $REQUIRED_SETTINGS 96 | do 97 | if [ -z "$(eval "echo \$$required_setting")" ] 98 | then 99 | ALL_REQUIRED_SETTINGS_EXIST=false 100 | break 101 | fi 102 | done 103 | 104 | echo $ALL_REQUIRED_SETTINGS_EXIST 105 | } 106 | 107 | #----------------------------------------------------------------------------------------------------------------------- 108 | 109 | create_and_validate_config_file() { 110 | # Search for config file. If it doesn't exist, copy the default one 111 | if [ ! -f "$CONFIG_FILE" ]; then 112 | echo "Creating config file. Please do not forget to edit it to specify your settings!" 113 | cp "$TEMPLATE_CONFIG_FILE" "$CONFIG_FILE" 114 | chmod a+w "$CONFIG_FILE" 115 | exit 1 116 | fi 117 | 118 | # Check to see if they didn't edit the config file 119 | if diff "$TEMPLATE_CONFIG_FILE" "$CONFIG_FILE" >/dev/null 120 | then 121 | echo "Please edit the config file to specify your settings" 122 | exit 3 123 | fi 124 | 125 | # Translate line endings, since they may have edited the file in Windows 126 | PROCESSED_CONFIG_FILE=$(mktemp) 127 | 128 | tr -d '\r' < "$CONFIG_FILE" > "$PROCESSED_CONFIG_FILE" 129 | 130 | echo "$PROCESSED_CONFIG_FILE" 131 | } 132 | 133 | #----------------------------------------------------------------------------------------------------------------------- 134 | 135 | merge_config_vars_and_env_vars() { 136 | SAFE_CONFIG_FILE=$1 137 | 138 | . "$SAFE_CONFIG_FILE" 139 | export $(grep = "$SAFE_CONFIG_FILE" | grep -v '^ *#' | cut -d= -f1) 140 | 141 | # Env vars take precedence 142 | . "$ENV_VARS" 143 | export $(cut -d= -f1 "$ENV_VARS") 144 | } 145 | 146 | #----------------------------------------------------------------------------------------------------------------------- 147 | 148 | set_default_values() { 149 | # Handle defaults now 150 | for KEY_VALUE in $DEFAULT_SETTINGS 151 | do 152 | KEY=$(echo "$KEY_VALUE" | cut -d= -f1) 153 | VALUE=$(echo "$KEY_VALUE" | cut -d= -f2) 154 | 155 | eval "export $KEY=\${$KEY:=$VALUE}" 156 | done 157 | } 158 | 159 | ######################################################################################################################## 160 | 161 | . "$ENV_VARS" 162 | 163 | if [ $(all_required_settings_exist) = true ] 164 | then 165 | echo "All required settings passed as environment variables. Skipping config file creation." 166 | exit 0 167 | fi 168 | 169 | SAFE_CONFIG_FILE=$(create_and_validate_config_file) 170 | 171 | merge_config_vars_and_env_vars $SAFE_CONFIG_FILE 172 | 173 | validate_values 174 | 175 | set_default_values 176 | 177 | print_config 178 | 179 | generate_binary_config 180 | 181 | # Now dump the envvars, in the style that boot.sh does. exec to avoid SHLVL=2 182 | exec sh -c "export > \"$MERGED_ENV_VARS\"" 183 | --------------------------------------------------------------------------------