Jorijn van der Graaf
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305 lines
14 KiB
Shell
Executable file
305 lines
14 KiB
Shell
Executable file
#!/bin/sh
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# Turn on the self-hosted EURC rail in production.
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#
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# tools/enable-eurc.sh POOL_FILE validate, install, restart, verify
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# tools/enable-eurc.sh POOL_FILE --append top up an existing pool (append-only)
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# --host NAME ssh destination (default: hetzner — root via ~/.ssh/config)
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# --chains FILE use this chains JSON instead of the built-in mainnet pair
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# (how you rehearse against Sepolia — see deploy/README.md)
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# --yes skip the contract confirmation prompt
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#
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# POOL_FILE is the list your wallet generated at home: one receiving address
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# per line, # comments allowed. COPY it from the wallet, never retype — the
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# server cannot verify EIP-55 checksums (and neither can this script: that
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# needs keccak-256, which nothing in a stock shell provides), so a mistyped
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# but well-formed address would be accepted and published to real buyers.
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#
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# What this automates is deploy/README.md "The EURC rail": install the chains
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# file and the address pool, add EURC_CHAINS= to payments.env (setting that
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# variable IS selecting the rail), restart, and prove the journal now says
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# crypto=eurc. If the restart refuses — the rail's loader treats a bad pool as
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# a startup refusal, not a degraded mode — the env line is rolled back and the
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# service restarted bank-only, so a botched enable never takes checkout down.
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#
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# The remote pool is APPEND-ONLY once live: <pool>.cursor is an index into it,
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# so rewriting or reordering re-issues addresses already bound to old orders.
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# That is why an existing pool is a refusal without --append, and why --append
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# adds only addresses the pool does not already hold.
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set -eu
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UNIT=catcrafts-server
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CIRCLE_URL="https://developers.circle.com/stablecoins/eurc-contract-addresses"
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POOL_SRC=""
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HOST=hetzner
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CHAINS_SRC=""
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APPEND=0
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ASSUME_YES=0
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while [ $# -gt 0 ]; do
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case "$1" in
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--host) HOST="${2:?--host needs a value}"; shift 2 ;;
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--chains) CHAINS_SRC="${2:?--chains needs a value}"; shift 2 ;;
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--append) APPEND=1; shift ;;
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--yes) ASSUME_YES=1; shift ;;
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-h|--help) sed -n '2,28p' "$0" | sed 's/^# \{0,1\}//'; exit 0 ;;
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-*) echo "enable-eurc: unknown option $1 (try --help)" >&2; exit 1 ;;
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*) [ -n "$POOL_SRC" ] && { echo "enable-eurc: one pool file only" >&2; exit 1; }
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POOL_SRC="$1"; shift ;;
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esac
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done
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[ -n "$POOL_SRC" ] || { echo "enable-eurc: usage: tools/enable-eurc.sh POOL_FILE [--host H] [--chains F] [--append] [--yes]" >&2; exit 1; }
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[ -r "$POOL_SRC" ] || { echo "enable-eurc: cannot read pool file '$POOL_SRC'" >&2; exit 1; }
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WORK="$(mktemp -d)"
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trap 'rm -rf "$WORK"' EXIT INT TERM
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# ── validate the pool locally, by the server's own rules ─────────────────
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#
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# Mirror of EurcRail::LoadPool: strip # comments and whitespace, lowercase,
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# require 0x + 40 hex, refuse duplicates (case-insensitively — the server
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# lowercases before comparing, so "0xAB.." and "0xab.." are the same reuse
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# bug). Refusing here means the service is never restarted into a refusal.
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awk '
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{ sub(/#.*/, ""); gsub(/^[ \t]+|[ \t\r]+$/, ""); if ($0 == "") next
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addr = tolower($0)
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if (addr !~ /^0x[0-9a-f]{40}$/) { printf "enable-eurc: pool line %d is not an address\n", NR > "/dev/stderr"; bad = 1; exit 1 }
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if (addr in seen) { printf "enable-eurc: pool line %d duplicates an earlier address\n", NR > "/dev/stderr"; bad = 1; exit 1 }
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seen[addr] = 1; print addr }
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END { if (!bad && length(seen) == 0) { print "enable-eurc: pool file holds no addresses" > "/dev/stderr"; exit 1 } }
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' "$POOL_SRC" > "$WORK/pool.txt"
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COUNT=$(wc -l < "$WORK/pool.txt")
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# The rail warns at 25 addresses left; starting anywhere near that is starting
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# on the reserve tank.
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if [ "$COUNT" -lt 50 ] && [ "$APPEND" -eq 0 ]; then
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echo "enable-eurc: WARNING: only $COUNT addresses — the low-water warning fires at 25 left. Consider generating more before going live." >&2
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fi
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# ── the chains file ──────────────────────────────────────────────────────
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#
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# Built-in default is mainnet Base + Ethereum, Base first because file order
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# is display order and its note is the fee nudge the buyer sees. Contracts
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# must match Circle's list and nowhere else — matching the CONTRACT, not the
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# ticker, is what makes a fake "EURC" worthless here — hence the prompt.
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if [ -n "$CHAINS_SRC" ]; then
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[ -r "$CHAINS_SRC" ] || { echo "enable-eurc: cannot read chains file '$CHAINS_SRC'" >&2; exit 1; }
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cp "$CHAINS_SRC" "$WORK/chains.json"
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else
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# Several endpoints per chain, from DIFFERENT operators, because a payment
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# is confirmed only when min_confirmations of them independently agree that
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# the money is there — no single node's word settles an order. Base gets
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# three (Coinbase's own, Allnodes, Automata) so one being down still leaves
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# a quorum; Ethereum gets two. All five were checked to answer
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# eth_chainId AND a balanceOf eth_call at block_tag=finalized, which is
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# what this rail actually asks of them (Cloudflare's endpoint refuses
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# finalized eth_call, which is why it is not here).
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cat > "$WORK/chains.json" <<'JSON'
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{"chains": [
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{"name": "base",
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"rpcs": ["https://mainnet.base.org",
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"https://base-rpc.publicnode.com",
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"https://1rpc.io/base"],
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"min_confirmations": 2,
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"contract": "0x60a3E35Cc302bFA44Cb288Bc5a4F316Fdb1adb42",
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"chain_id": 8453, "note": "lowest network fees"},
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{"name": "ethereum",
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"rpcs": ["https://ethereum-rpc.publicnode.com",
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"https://1rpc.io/eth"],
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"min_confirmations": 2,
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"contract": "0x1aBaEA1f7C830bD89Acc67eC4af516284b1bC33c",
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"chain_id": 1}
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]}
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JSON
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fi
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if command -v jq >/dev/null 2>&1; then
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jq -e '.chains | length > 0' "$WORK/chains.json" >/dev/null \
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|| { echo "enable-eurc: chains file is not valid chains JSON" >&2; exit 1; }
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fi
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if [ "$ASSUME_YES" -eq 0 ]; then
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echo "About to install these chains ($COUNT addresses in the pool):"
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sed 's/^/ /' "$WORK/chains.json"
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echo "Each chain lists several independent endpoints; a payment settles only"
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echo "when min_confirmations of them agree, so no single node can fake one."
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echo "Verify every contract against Circle's list — the only source that counts:"
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echo " $CIRCLE_URL"
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printf 'Contracts verified? Type yes to continue: '
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read -r answer
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[ "$answer" = "yes" ] || { echo "enable-eurc: aborted — nothing was touched." >&2; exit 1; }
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fi
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# ── the remote apply script ──────────────────────────────────────────────
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#
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# Everything travels in ONE ssh connection (a tar of chains.json, pool.txt and
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# this script, unpacked and run on the box) because the host firewalls ssh
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# with `ufw limit 22/tcp`: a chatty multi-connection script trips the limiter
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# and the failure looks like a network fault, not a firewall choice.
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cat > "$WORK/apply.sh" <<'REMOTE'
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#!/bin/sh
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set -eu
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UNIT=catcrafts-server
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work="$(dirname "$0")"
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# Derive paths from the unit itself rather than hardcoding: the unit is the
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# authority on where the ledger and env file live.
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ORDERS=$(systemctl cat "$UNIT" | sed -n 's/^[[:space:]]*--orders=\([^ \\]*\).*/\1/p' | head -1)
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[ -n "$ORDERS" ] || ORDERS=/var/lib/catcrafts/orders.jsonl
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ENVF=$(systemctl cat "$UNIT" | sed -n 's/^EnvironmentFile=-\{0,1\}\(.*\)/\1/p' | head -1)
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[ -n "$ENVF" ] || ENVF=/etc/catcrafts/payments.env
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[ -e "$ENVF" ] || { echo "apply: $ENVF does not exist — is the Mollie side even configured?" >&2; exit 1; }
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# Respect an explicit EURC_POOL override if one is already configured;
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# otherwise the server's default: the pool hangs off the orders path.
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POOL=$(sed -n 's/^EURC_POOL=//p' "$ENVF" | head -1)
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[ -n "$POOL" ] || POOL="$ORDERS.eurc-addresses"
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CHAINS_DEST=/etc/catcrafts/eurc-chains.json
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SVC_USER=$(systemctl cat "$UNIT" | sed -n 's/^User=//p' | head -1)
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[ -n "$SVC_USER" ] || SVC_USER=catcrafts
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if [ -e "$POOL" ] && [ "${APPEND:-0}" != 1 ]; then
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echo "apply: $POOL already exists. The pool is append-only (the cursor is an index into it) — rerun with --append to top it up. Refusing to overwrite." >&2
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exit 1
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fi
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if [ -e "$POOL" ]; then
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# Append only genuinely new addresses: a duplicate in the pool is a
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# startup refusal, so filtering here is what keeps --append rerunnable.
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added=0
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while IFS= read -r addr; do
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if ! grep -qixF "$addr" "$POOL"; then
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printf '%s\n' "$addr" >> "$POOL"
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added=$((added + 1))
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fi
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done < "$work/pool.txt"
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echo "apply: appended $added new address(es) to $POOL"
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else
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install -o "$SVC_USER" -g "$SVC_USER" -m 0600 "$work/pool.txt" "$POOL"
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echo "apply: installed $(wc -l < "$POOL") addresses at $POOL"
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fi
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# World-readable is fine — chain names and Circle's public contracts are not
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# secrets, and the service user must be able to read it.
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install -m 0644 "$work/chains.json" "$CHAINS_DEST"
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# Append the rail selection, newline-safely, and remember whether WE are the
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# ones who added it.
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#
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# Two bugs lived in the one-liner this replaces. First, payments.env is
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# hand-maintained, so its last line may have no trailing newline — and then a
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# bare >> concatenated onto it, turning MOLLIE_API_KEY=live_abc into
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# MOLLIE_API_KEY=live_abcEURC_CHAINS=/etc/... : both rails broken, and the
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# rollback below could not even see it because the line no longer started with
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# EURC_CHAINS. Second, the rollback deleted EVERY EURC_CHAINS= line, including
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# one the operator had set themselves pointing at a different chains file — so
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# a timeout during an --append top-up of an already-live rail switched crypto
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# off on a host where it had been working.
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ADDED_ENV_LINE=0
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if grep -q '^EURC_CHAINS=' "$ENVF"; then
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echo "apply: EURC_CHAINS is already set in $ENVF — leaving it as it is"
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else
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# A file that does not end in a newline gets one before the append.
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if [ -s "$ENVF" ] && [ "$(tail -c1 "$ENVF" | od -An -c | tr -d ' \n')" != '\\n' ]; then
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printf '\n' >> "$ENVF"
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fi
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printf 'EURC_CHAINS=%s\n' "$CHAINS_DEST" >> "$ENVF"
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ADDED_ENV_LINE=1
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fi
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# Not a bare command: under `set -e` a non-zero restart would abort the script
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# here and the rollback below would never run, leaving EURC_CHAINS set and the
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# service down. Type=simple returns 0 even when the process dies immediately,
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# so today this is defensive — but the unit type is not this script's to
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# guarantee.
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systemctl restart "$UNIT" || echo "apply: systemctl restart reported failure" >&2
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# Success is evidence from THIS invocation, and never the stdout listening
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# line: under journald stdout is fully buffered, so that line arrives minutes
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# to hours late or dies unflushed with the process — polling for it rolled
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# back two perfectly healthy enables. What is prompt and truthful:
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# - the rail loader's stderr line ("eurc: N chains, ...") — printed only
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# when EURC_CHAINS selected the rail AND the pool + chains loaded, and
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# - /api/healthz answering — the server is actually serving.
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# Newer binaries print the listening line to stderr too; accept it as a
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# third, sufficient signal when it shows up.
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INV=$(systemctl show -p InvocationID --value "$UNIT")
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PORT=$(systemctl cat "$UNIT" | sed -n 's/^ExecStart=.*--serve \([0-9]*\).*/\1/p' | head -1)
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[ -n "$PORT" ] || PORT=8081
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echo "apply: waiting for the rail to prove itself (up to 60s)..."
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eurc_line=""
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healthy=0
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tries=0
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while [ "$tries" -lt 60 ]; do
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[ "$(systemctl is-active "$UNIT" || true)" = failed ] && break
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inv_log=$(journalctl "_SYSTEMD_INVOCATION_ID=$INV" --no-pager 2>/dev/null || true)
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if printf '%s' "$inv_log" | grep -q 'crypto=eurc'; then
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eurc_line=$(printf '%s' "$inv_log" | grep 'crypto=eurc' | tail -1)
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healthy=1
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break
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fi
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eurc_line=$(printf '%s' "$inv_log" | grep -E 'eurc: [0-9]+ chains' | tail -1 || true)
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if [ -n "$eurc_line" ] && curl -sf --max-time 2 "http://127.0.0.1:$PORT/api/healthz" >/dev/null 2>&1; then
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healthy=1
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break
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fi
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sleep 1
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tries=$((tries + 1))
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done
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if systemctl is-active --quiet "$UNIT" && [ "$healthy" -eq 1 ]; then
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printf '%s\n' "$eurc_line"
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echo "apply: healthz answers on :$PORT"
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echo "apply: EURC rail is LIVE"
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exit 0
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fi
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# The enable failed — put the shop back the way it was before saying so. The
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# pool and chains files stay (harmless without the env line); only the rail
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# selection is rolled back, so bank checkout is never collateral damage.
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echo "apply: service did not come up with crypto=eurc — rolling back" >&2
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if [ "$ADDED_ENV_LINE" = 1 ]; then
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# Only the exact line this run appended, and only if we appended it.
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sed -i "\\|^EURC_CHAINS=$CHAINS_DEST\$|d" "$ENVF"
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else
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echo "apply: EURC_CHAINS was already configured before this run — leaving it" >&2
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echo "apply: alone. Crypto stays as the operator had it; only the pool and" >&2
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echo "apply: chains files this run installed remain." >&2
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fi
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systemctl restart "$UNIT" || true
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echo "apply: rolled back. The refusal:" >&2
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journalctl -u "$UNIT" --since "-60 seconds" --no-pager | tail -15 >&2
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exit 1
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REMOTE
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tar -cf "$WORK/payload.tar" -C "$WORK" chains.json pool.txt apply.sh
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echo "enable-eurc: applying on $HOST (one ssh connection)..."
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if ! ssh "$HOST" "work=\$(mktemp -d) && trap 'rm -rf \"\$work\"' EXIT && tar xf - -C \"\$work\" && APPEND=$APPEND sh \"\$work/apply.sh\"" < "$WORK/payload.tar"; then
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# apply.sh narrates its own rollback when the restart refused; a failure
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# before that (ssh, tar, an apply refusal) means nothing was ever touched.
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# Claiming either state from here would be a guess, so point at the output.
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echo "enable-eurc: FAILED — see above for how far it got. apply.sh rolls back the rail selection itself if the restart refused." >&2
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exit 1
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fi
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# Public proof, informative only: the donation form should now offer the
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# payment choice (it renders no radios when only one rail exists).
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if [ "$HOST" = hetzner ]; then
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if curl -s --max-time 10 https://catcrafts.net/shop/donation | grep -q 'name="pay"'; then
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echo "enable-eurc: catcrafts.net/shop/donation now offers the payment choice."
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else
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echo "enable-eurc: WARNING: the live donation page does not show the pay choice yet — check by hand." >&2
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fi
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fi
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cat <<'DONE'
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enable-eurc: done. Next:
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1. Smoke test with real money, smallest denomination: a 1 euro donation
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paid in EURC on Base exercises the whole path for ~a cent of fees.
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2. Add the pool (+.cursor) to whatever backs up orders.jsonl.
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3. Decide the sweep cadence BEFORE the first real donation arrives —
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the shop holds EURC until you sell it for euros at an exchange.
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DONE
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