49 lines
1.4 KiB
Bash
Executable File
49 lines
1.4 KiB
Bash
Executable File
#!/bin/sh
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set -eu
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container_name="${1:-DockDeck}"
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icon_url="${2:-}"
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template_path="/boot/config/plugins/dockerMan/templates-user/my-${container_name}.xml"
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persistent_dir="/var/lib/docker/unraid/images"
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runtime_dir="/usr/local/emhttp/state/plugins/dynamix.docker.manager/images"
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fail() {
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printf 'DockDeck icon refresh failed: %s\n' "$1" >&2
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exit 1
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}
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[ "$(id -u)" -eq 0 ] || fail "run this helper as root on the Unraid host"
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case "$container_name" in
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"" | *[!A-Za-z0-9_.-]*) fail "invalid container name" ;;
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esac
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if [ -z "$icon_url" ] && [ -f "$template_path" ]; then
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icon_url="$(sed -n 's#.*<Icon>\(.*\)</Icon>.*#\1#p' "$template_path" | head -n 1)"
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fi
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case "$icon_url" in
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http://* | https://*) ;;
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*) fail "provide an HTTP(S) icon URL or a user template containing <Icon>" ;;
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esac
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temporary_icon="$(mktemp /tmp/dockdeck-icon.XXXXXX)"
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trap 'rm -f "$temporary_icon"' EXIT HUP INT TERM
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curl --fail --silent --show-error --location \
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--connect-timeout 5 --max-time 20 \
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"$icon_url" --output "$temporary_icon"
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[ "$(file -b --mime-type "$temporary_icon")" = "image/png" ] || \
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fail "the downloaded asset is not a real PNG"
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mkdir -p "$persistent_dir" "$runtime_dir"
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install -m 0644 -o root -g root \
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"$temporary_icon" "$persistent_dir/${container_name}-icon.png"
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install -m 0644 -o root -g root \
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"$temporary_icon" "$runtime_dir/${container_name}-icon.png"
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printf 'Refreshed both Unraid icon caches for %s from %s\n' \
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"$container_name" "$icon_url"
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