35 lines
1.5 KiB
Bash
35 lines
1.5 KiB
Bash
#!/bin/sh
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# Regenerate the SPA's runtime config from the environment at container start.
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# Lets one prebuilt image target any Honcho backend without a rebuild.
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# OPENCONCHO_DEFAULT_HONCHO_URL — absolute URL seeding the first instance, or empty.
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# OPENCONCHO_UPSTREAM_ALLOWLIST — optional comma-separated host globs (SSRF guard).
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# Runs from /docker-entrypoint.d before nginx starts. Requires the html dir to
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# be writable (default); skip or bind-mount config.js when running --read-only.
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set -eu
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cat > /usr/share/nginx/html/config.js <<EOF
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window.__OPENCONCHO_DEFAULT_HONCHO_URL__ = "${OPENCONCHO_DEFAULT_HONCHO_URL:-}";
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EOF
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# Render the SSRF allowlist into an nginx map for $allow_upstream.
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# Unset/empty OPENCONCHO_UPSTREAM_ALLOWLIST → open (default 1), fine for the
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# localhost-bound default. Set it (comma-separated host globs) before exposing
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# the proxy (e.g. behind a tunnel) to reject non-matching upstreams.
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ALLOWLIST_CONF=/etc/nginx/conf.d/allowlist_map.conf
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if [ -z "${OPENCONCHO_UPSTREAM_ALLOWLIST:-}" ]; then
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printf 'map $http_x_honcho_upstream $allow_upstream { default 1; }\n' > "$ALLOWLIST_CONF"
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else
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{
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printf 'map $http_x_honcho_upstream $allow_upstream {\n'
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printf ' default 0;\n'
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IFS=','
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for host in $OPENCONCHO_UPSTREAM_ALLOWLIST; do
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host=$(printf '%s' "$host" | tr -d ' ')
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[ -z "$host" ] && continue
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esc=$(printf '%s' "$host" | sed -e 's/[.]/\\./g' -e 's#[*]#[^/]*#g')
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printf ' "~^https?://%s(:[0-9]+)?(/.*)?$" 1;\n' "$esc"
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done
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printf '}\n'
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} > "$ALLOWLIST_CONF"
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fi
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