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#!/bin/sh
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create_socat_links() {
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# Bind linked docker container to localhost socket using socat
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USED_PORT="3000:22"
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while read NAME ADDR PORT; do
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if test -z "$NAME$ADDR$PORT"; then
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continue
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elif echo $USED_PORT | grep -E "(^|:)$PORT($|:)" > /dev/null; then
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echo "init:socat | Can't bind linked container ${NAME} to localhost, port ${PORT} already in use" 1>&2
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else
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SERV_FOLDER=/app/gogs/docker/s6/SOCAT_${NAME}_${PORT}
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mkdir -p ${SERV_FOLDER}
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CMD="socat -ls TCP4-LISTEN:${PORT},fork,reuseaddr TCP4:${ADDR}:${PORT}"
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echo -e "#!/bin/sh\nexec $CMD" > ${SERV_FOLDER}/run
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chmod +x ${SERV_FOLDER}/run
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USED_PORT="${USED_PORT}:${PORT}"
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echo "init:socat | Linked container ${NAME} will be binded to localhost on port ${PORT}" 1>&2
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fi
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done << EOT
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$(env | sed -En 's|(.*)_PORT_([0-9]+)_TCP=tcp://(.*):([0-9]+)|\1 \3 \4|p')
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EOT
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}
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cleanup() {
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# Cleanup SOCAT services and s6 event folder
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# On start and on shutdown in case container has been killed
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rm -rf $(find /app/gogs/docker/s6/ -name 'event')
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rm -rf /app/gogs/docker/s6/SOCAT_*
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}
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create_volume_subfolder() {
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# Create VOLUME subfolder
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for f in /data/gogs/data /data/gogs/conf /data/gogs/log /data/git /data/ssh; do
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if ! test -d $f; then
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mkdir -p $f
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fi
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done
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}
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cleanup
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create_volume_subfolder
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LINK=$(echo "$SOCAT_LINK" | tr '[:upper:]' '[:lower:]')
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if [ "$LINK" = "false" -o "$LINK" = "0" ]; then
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echo "init:socat | Will not try to create socat links as requested" 1>&2
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else
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create_socat_links
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fi
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# Exec CMD or S6 by default if nothing present
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if [ $# -gt 0 ];then
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exec "$@"
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else
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exec /bin/s6-svscan /app/gogs/docker/s6/
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fi
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