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https://github.com/shenxn/protonmail-bridge-docker.git
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Merge a3c684ffe1 into 97014ae98c
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@ -1,33 +1,52 @@
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# The build image could be golang, but it currently does not support riscv64. Only debian:sid does, at the time of writing.
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FROM debian:sid-slim AS build
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### The Deb install is just a repack of the official ProtonMail Bridge deb package with less dependencies.
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### I recommend you don't use this. It's here for legacy reasons.
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FROM golang:1.26-trixie AS build
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ARG version
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ENV version=${version}
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# Install dependencies
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RUN apt-get update && apt-get install -y golang build-essential libsecret-1-dev
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RUN apt-get update && apt-get install -y build-essential libsecret-1-dev libfido2-dev libcbor-dev
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# Build
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ADD https://github.com/ProtonMail/proton-bridge.git#${version} /build/
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WORKDIR /build/
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RUN make build-nogui vault-editor
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FROM debian:sid-slim
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# -----------------------------------------------------------------------------
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FROM debian:trixie-slim
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LABEL maintainer="Simon Felding <sife@adm.ku.dk>"
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# Select PTY tool for manage/attach commands: dtach (default), abduco, reptyr
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ARG PTY_TOOL=dtach
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ENV PTY_TOOL=${PTY_TOOL}
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EXPOSE 25/tcp
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EXPOSE 143/tcp
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# Install dependencies and protonmail bridge
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RUN apt-get update \
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&& apt-get install -y --no-install-recommends socat pass libsecret-1-0 ca-certificates \
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&& rm -rf /var/lib/apt/lists/*
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WORKDIR /protonmail
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# Copy bash scripts
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COPY gpgparams entrypoint.sh /protonmail/
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# Copy protonmail
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COPY --from=build /build/bridge /protonmail/
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COPY --from=build /build/proton-bridge /protonmail/
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COPY --from=build /build/vault-editor /protonmail/
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ENTRYPOINT ["bash", "/protonmail/entrypoint.sh"]
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RUN apt-get update \
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&& apt-get install -y --no-install-recommends \
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socat pass libsecret-1-0 libfido2-1 ca-certificates procps \
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&& case "${PTY_TOOL}" in \
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dtach) apt-get install -y --no-install-recommends dtach ;; \
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abduco) apt-get install -y --no-install-recommends abduco ;; \
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reptyr) apt-get install -y --no-install-recommends reptyr ;; \
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esac \
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&& chmod +x /protonmail/entrypoint.sh \
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&& rm -rf /var/lib/apt/lists/*
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HEALTHCHECK --interval=30s --timeout=5s --retries=3 --start-period=120s \
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CMD /bin/bash -c "true < /dev/tcp/localhost/25"
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ENTRYPOINT ["/protonmail/entrypoint.sh"]
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CMD ["run"]
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@ -1,35 +1,189 @@
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#!/bin/bash
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set -ex
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set -euo pipefail
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# Initialize
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if [[ $1 == init ]]; then
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PTY_TOOL="${PTY_TOOL:-dtach}"
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BRIDGE_SOCK=/protonmail/bridge.sock
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BRIDGE_PID_FILE=/protonmail/bridge.pid
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# Initialize pass
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gpg --generate-key --batch /protonmail/gpgparams
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pass init pass-key
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# Kill the other instance as only one can be running at a time.
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# This allows users to run entrypoint init inside a running conainter
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# which is useful in a k8s environment.
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# || true to make sure this would not fail in case there is no running instance.
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pkill protonmail-bridge || true
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# Clean stale gpg-agent sockets left from a previous run
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rm -f /root/.gnupg/S.gpg-agent* 2>/dev/null || true
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# Login
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/protonmail/proton-bridge --cli $@
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# --- PTY helpers (only used by: init, manage, attach) ---
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else
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pty_start() {
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case "${PTY_TOOL}" in
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dtach) dtach -n "${BRIDGE_SOCK}" "$@" ;;
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abduco) abduco -n bridge "$@" ;;
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# reptyr re-attaches existing PIDs; use nohup+setsid to launch headlessly instead
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reptyr) setsid "$@" </dev/null &>/dev/null & echo $! > "${BRIDGE_PID_FILE}" ;;
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esac
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}
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# socat will make the conn appear to come from 127.0.0.1
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# ProtonMail Bridge currently expects that.
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# It also allows us to bind to the real ports :)
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socat TCP-LISTEN:25,fork TCP:127.0.0.1:1025 &
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socat TCP-LISTEN:143,fork TCP:127.0.0.1:1143 &
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pty_attach() {
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case "${PTY_TOOL}" in
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dtach) exec dtach -a "${BRIDGE_SOCK}" -e '^\' ;;
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abduco) exec abduco -a bridge ;;
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reptyr) exec reptyr "$(cat "${BRIDGE_PID_FILE}")" ;;
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esac
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}
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# Start protonmail
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# Fake a terminal, so it does not quit because of EOF...
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rm -f faketty
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mkfifo faketty
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cat faketty | /protonmail/proton-bridge --cli $@
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detach_hint() {
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case "${PTY_TOOL}" in
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dtach|abduco) echo "Ctrl+\\" ;;
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reptyr) echo "Ctrl+C" ;;
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esac
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}
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fi
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# Wait up to $1 seconds for the bridge socket (or PID file) to appear
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wait_for_session() {
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local timeout="${1:-10}"
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local elapsed=0
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while [[ "${elapsed}" -lt "${timeout}" ]]; do
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case "${PTY_TOOL}" in
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dtach|abduco) [[ -S "${BRIDGE_SOCK}" ]] && return 0 ;;
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reptyr) [[ -f "${BRIDGE_PID_FILE}" ]] && return 0 ;;
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esac
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sleep 1
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(( elapsed++ )) || true
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done
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echo "ERROR: bridge session did not start within ${timeout}s." >&2
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return 1
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}
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# --- Commands ---
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CMD="${1:-run}"
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case "${CMD}" in
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init)
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# One-time setup: generate GPG key, init password store, interactive login.
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# Run as: docker run -it <image> init
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gpg --generate-key --batch /protonmail/gpgparams
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pass init pass-key
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exec /protonmail/proton-bridge --cli
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;;
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manage)
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# Open an interactive --cli session for account management (add/remove accounts etc).
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# Run as: docker run -it --rm -v <data-volume> <image> manage
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# NOTE: Stop the running daemon container first to avoid port/lock conflicts.
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CONTAINER_ID=$(hostname)
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echo " Starting management session... [PTY_TOOL=${PTY_TOOL}]"
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pty_start /protonmail/proton-bridge --cli
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# Wait for the session socket/pid to appear before printing attach instructions
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wait_for_session 10
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echo " Management session ready."
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echo " Attach: docker exec -it ${CONTAINER_ID} /protonmail/entrypoint.sh attach"
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echo " Detach: $(detach_hint)"
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# Block so the container stays alive for `docker exec attach`.
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# If stdin is a tty (docker run -it), jump straight into the session.
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if [[ -t 0 ]]; then
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pty_attach
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else
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# No tty: wait until the bridge session disappears then exit cleanly.
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while true; do
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case "${PTY_TOOL}" in
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dtach|abduco) [[ -S "${BRIDGE_SOCK}" ]] || break ;;
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reptyr) kill -0 "$(cat "${BRIDGE_PID_FILE}" 2>/dev/null)" 2>/dev/null || break ;;
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esac
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sleep 2
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done
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fi
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;;
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attach)
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# Reattach to a running manage session.
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case "${PTY_TOOL}" in
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dtach|abduco)
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if [[ ! -S "${BRIDGE_SOCK}" ]]; then
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echo "ERROR: No active session found (${BRIDGE_SOCK} does not exist)." >&2
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echo " Start one first: docker exec -it \$(hostname) /protonmail/entrypoint.sh manage" >&2
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exit 1
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fi
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;;
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reptyr)
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if [[ ! -f "${BRIDGE_PID_FILE}" ]]; then
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echo "ERROR: No active session found (${BRIDGE_PID_FILE} does not exist)." >&2
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echo " Start one first: docker exec -it \$(hostname) /protonmail/entrypoint.sh manage" >&2
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exit 1
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fi
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;;
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esac
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pty_attach
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;;
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run)
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# Daemon mode: --noninteractive runs headless, output goes directly to docker logs.
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CONTAINER_ID=$(hostname)
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echo "========================================"
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echo " ProtonMail Bridge daemon starting..."
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echo " Container: ${CONTAINER_ID}"
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echo ""
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echo " Available commands:"
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echo " First-time setup:"
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echo " docker run -it <image> init"
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echo ""
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echo " Manage accounts (stop daemon first):"
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echo " docker run -it --rm -v <data-volume> <image> manage"
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echo ""
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echo " Attach to a running manage session:"
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echo " docker exec -it ${CONTAINER_ID} /protonmail/entrypoint.sh attach"
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echo ""
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echo " View logs:"
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echo " docker logs -f ${CONTAINER_ID}"
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echo "========================================"
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# Start bridge in background so we can wait for it to bind its ports
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# before socat begins accepting connections.
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/protonmail/proton-bridge --noninteractive &
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BRIDGE_PID=$!
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# Wait for bridge to open its local SMTP and IMAP ports (up to 60s)
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echo " Waiting for bridge ports 1025/1143..."
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for port in 1025 1143; do
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elapsed=0
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until socat -u OPEN:/dev/null TCP:127.0.0.1:${port} 2>/dev/null; do
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sleep 1
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(( elapsed++ )) || true
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if [[ "${elapsed}" -ge 60 ]]; then
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echo "ERROR: bridge port ${port} did not open within 60s." >&2
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kill "${BRIDGE_PID}" 2>/dev/null || true
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exit 1
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fi
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done
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echo " Port ${port} ready."
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done
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# socat forwards standard ports to bridge's localhost-only listener ports.
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# retry=30,interval=2 handles transient bridge restarts without dropping connections.
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socat TCP-LISTEN:25,fork,reuseaddr TCP:127.0.0.1:1025,nodelay,retry=30,interval=2 &
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SOCAT_SMTP_PID=$!
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socat TCP-LISTEN:143,fork,reuseaddr TCP:127.0.0.1:1143,nodelay,retry=30,interval=2 &
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SOCAT_IMAP_PID=$!
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# Verify both socat processes started
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sleep 1
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for pid in "${SOCAT_SMTP_PID}" "${SOCAT_IMAP_PID}"; do
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if ! kill -0 "${pid}" 2>/dev/null; then
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echo "ERROR: socat port-forward (pid ${pid}) failed to start." >&2
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kill "${BRIDGE_PID}" 2>/dev/null || true
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exit 1
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fi
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done
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# Wait on bridge; if it exits, bring down socat too.
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wait "${BRIDGE_PID}"
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kill "${SOCAT_SMTP_PID}" "${SOCAT_IMAP_PID}" 2>/dev/null || true
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;;
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*)
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echo "Usage: entrypoint.sh [init|manage|attach|run]" >&2
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exit 1
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;;
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esac
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