64 lines
1.9 KiB
Bash
Executable file
64 lines
1.9 KiB
Bash
Executable file
#!/usr/bin/env bash
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set -e
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set -o pipefail
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[ -n "$1" ] || { echo "error: Provide a beacon address" >&2; exit 1; }
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BEACON="$1"
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[ -n "$FSOCIETY_TELEGRAM_BACKUP_N" ] || { echo "error: N env var not set." >&2; exit 1; }
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[ -n "$FSOCIETY_TELEGRAM_BACKUP_LOCATION" ] || { echo "error: N env var not set." >&2; exit 1; }
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ALPHABET="0 1 2"
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BEACONPORT="60666"
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WORKDIR="/run/user/$UID/ftb"
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ZIPPED_KEYS="$FSOCIETY_TELEGRAM_BACKUP_LOCATION/fsociety-archive-secret-slot$FSOCIETY_TELEGRAM_BACKUP_N.zip.gpg"
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TOMB="$FSOCIETY_TELEGRAM_BACKUP_LOCATION/fsociety-archive-2024-01-05.img"
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cleanup() {
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sudo umount ./backup
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sudo cryptsetup close /dev/mapper/fsociety_backup
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sudo sudo chattr +i "$TOMB" "$ZIPPED_KEYS"
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rm -rfd "$WORKDIR"
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}
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trap cleanup EXIT
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check_dependency() {
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command -v $1 > /dev/null || { echo "error: $1 not found" >&2; exit 1; }
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}
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check_dependencies() {
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for dep in "$@"; do
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check_dependency "$dep"
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done
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}
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check_dependencies "firefox" "ncat" "gpg" "cryptsetup" "unzip" "shred"
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[ ! -e "$WORKDIR" ] || { echo "error: Delete $WORKDIR." >&2; exit 1; }
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mkdir -p "$WORKDIR"
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cd "$WORKDIR"
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sudo sudo chattr -i "$TOMB" "$ZIPPED_KEYS"
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gpg -d "$ZIPPED_KEYS" > keys.zip
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unzip keys.zip
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HEADER="$WORKDIR/fsociety-archive-secret-slot$FSOCIETY_TELEGRAM_BACKUP_N/header$(echo $ALPHABET | tr " " $'\n' | grep -v "^$FSOCIETY_TELEGRAM_BACKUP_N$" | sed 's/^/-slot/' | tr -d $'\n').luks-header"
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ncat -v --ssl "$BEACON" "$BEACONPORT" </dev/null | gpg -d | sudo cryptsetup open --header "$HEADER" --key-file - "$TOMB" fsociety_backup
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rm -rfd *
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mkdir backup
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sudo mount -o ro /dev/mapper/fsociety_backup backup
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FFPROFILE="$WORKDIR/ff-$$.$RANDOM.d"
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mkdir -p "$FFPROFILE"
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firefox -profile "$FFPROFILE" --no-remote ./backup/messages.html
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find "$FFPROFILE" -type f -exec shred {} \;
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cleanup()
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echo "I go to my fathers... in whose mighty company... I shall not now feel ashamed."
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