From 2b118846facad475542792d727fb7d04374b253d Mon Sep 17 00:00:00 2001
From: "Rodrigo Q. Saramago" <rodrigoqsaramago@gmail.com>
Date: Sat, 17 Sep 2022 15:38:32 +0200
Subject: [PATCH] =?UTF-8?q?Add=20CI=20job=20to=20check=20if=20updateBinary?=
 =?UTF-8?q?=20downloads=20the=20correct=20release=20Co-authored-by:=20Kami?=
 =?UTF-8?q?l=20=C5=9Aliwak=20<kamil.sliwak@codepoets.it>?=
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---
 .circleci/config.yml            | 19 ++++++++++++
 scripts/is-binary-up-to-date.sh | 54 +++++++++++++++++++++++++++++++++
 2 files changed, 73 insertions(+)
 create mode 100755 scripts/is-binary-up-to-date.sh

diff --git a/.circleci/config.yml b/.circleci/config.yml
index 7acfa445..0db416dd 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -14,6 +14,7 @@ workflows:
       - truffle-sample-project
       - cli-smoke-test
       - solidity-solcjs-ext-test
+      - update-binary-test
 
 version: 2.1
 
@@ -353,6 +354,24 @@ jobs:
       - run: cd solidity/ && curl "https://binaries.soliditylang.org/bin/soljson-nightly.js" --location --output soljson.js
       - run: cd solidity/ && test/externalTests/solc-js/solc-js.sh "$(realpath soljson.js)" "$(scripts/get_version.sh)" "$(realpath ../solc-js/)"
 
+  update-binary-test:
+    docker:
+      - image: cimg/node:current
+    steps:
+      - show-npm-version
+      - checkout:
+          path: solc-js
+      - install-dependencies:
+          cache-id: solc-js
+          path: solc-js
+      - run:
+          name: Verify that `npm run updateBinary` downloads the latest release
+          command: |
+            cd solc-js
+            npm run updateBinary
+            npm run build
+            scripts/is-binary-up-to-date.sh
+
   node-v10:
     <<: *node-base
     docker:
diff --git a/scripts/is-binary-up-to-date.sh b/scripts/is-binary-up-to-date.sh
new file mode 100755
index 00000000..3a9080b2
--- /dev/null
+++ b/scripts/is-binary-up-to-date.sh
@@ -0,0 +1,54 @@
+#!/usr/bin/env bash
+
+set -euo pipefail
+
+BASE_URL="https://binaries.soliditylang.org/bin"
+REPO_ROOT="$(dirname "$0")/.."
+LIST_FILE=$(mktemp -t solc-bin-list-XXXXXX.json)
+
+function fail() {
+    echo -e "ERROR: $*" >&2
+    exit 1
+}
+
+function check_release_version() {
+    local current_version="$1"
+
+    curl --silent --fail "${BASE_URL}/list.json" -o "$LIST_FILE"
+    [[ ! -f $LIST_FILE ]] && fail "Download of release list failed:\n    [url]: ${BASE_URL}/list.json"
+
+    # Retrieve the latest released version
+    latest_version_short=$(jq --raw-output ".latestRelease" "$LIST_FILE")
+    latest_version_long=$(jq --raw-output ".releases | .[\"${latest_version_short}\"]" "$LIST_FILE" | sed --regexp-extended --quiet 's/^soljson-v(.*).js$/\1/p')
+
+    # Check if current version is the latest release
+    if [[ "$current_version" != "$latest_version_long" ]]; then
+        fail "Version is not the latest release:\n    [current]: ${current_version}\n    [latest]: ${latest_version_short}"
+    fi
+
+    current_sha=$(shasum --binary --algorithm 256 ./soljson.js | awk '{ print $1 }')
+    release_sha=$(jq --raw-output ".builds[] | select(.longVersion == \"${latest_version_long}\") | .sha256" "$LIST_FILE" | sed 's/^0x//')
+
+    # Check if sha matches
+    if [[ "$current_sha" != "$release_sha" ]]; then
+        fail "Checksum mismatch.\n    [current]: ${current_sha}\n    [release]: ${release_sha}"
+    fi
+}
+
+(
+    cd "$REPO_ROOT"
+
+    current_version=$(node ./dist/solc.js --version | sed --regexp-extended --quiet 's/^(.*).Emscripten.*/\1/p')
+
+    # Verify if current version matches the package version.
+    # It already exits with an error if the version mismatch
+    node ./dist/verifyVersion.js
+
+    # Verify if current version is the latest release
+    if check_release_version "$current_version"; then
+        echo "The currently installed soljson.js binary (${current_version}) matches the latest release available in solc-bin."
+    fi
+
+    # Cleanup temp files
+    rm -f "$LIST_FILE"
+)