Install specific protoc version when generating protobufs

scripts/.gitignore

@@ -0,0 +1 @@
+protobuf-bin/

scripts/download-protoc.sh

@@ -0,0 +1,78 @@
+#!/usr/bin/env bash
+set -eou pipefail
+
+# Specify the protobuf release version
+PROTOBUF_VERSION="29.2"
+
+# Define SHA-256 hashes for each supported platform
+# Update these hashes by running ./print-protoc-hashes.sh
+declare -A SHA256_HASHES=(
+  ["linux-aarch64"]="0019dfc4b32d63c1392aa264aed2253c1e0c2fb09216f8e2cc269bbfb8bb49b5"
+  ["linux-x86_64"]="52e9e7ece55c7e30e7e8bbd254b4b21b408a5309bca826763c7124b696a132e9"
+  ["darwin-aarch64"]="0e153a38d6da19594c980e7f7cd3ea0ddd52c9da1068c03c0d8533369fbfeb20"
+)
+
+# Determine the platform
+OS="$(uname -s | tr '[:upper:]' '[:lower:]')"
+ARCH="$(uname -m)"
+[[ "${ARCH}" == "arm64" ]] && ARCH="aarch64"
+
+PLATFORM="${OS}-${ARCH}"
+
+# Set the download URL based on the platform
+case "${PLATFORM}" in
+linux-x86_64)
+  PROTOC_ZIP="protoc-${PROTOBUF_VERSION}-linux-x86_64.zip"
+  ;;
+linux-aarch64)
+  PROTOC_ZIP="protoc-${PROTOBUF_VERSION}-linux-aarch64.zip"
+  ;;
+darwin-aarch64)
+  PROTOC_ZIP="protoc-${PROTOBUF_VERSION}-osx-aarch_64.zip"
+  ;;
+*)
+  echo "Unsupported platform: ${PLATFORM}" >&2
+  exit 1
+  ;;
+esac
+
+# Download the specified version of protobuf
+DOWNLOAD_URL="https://github.com/protocolbuffers/protobuf/releases/download/v${PROTOBUF_VERSION}/${PROTOC_ZIP}"
+echo "Downloading from: ${DOWNLOAD_URL}" >&2
+curl -LO "${DOWNLOAD_URL}"
+
+# Verify checksum
+EXPECTED_SHA256="${SHA256_HASHES[${PLATFORM}]}"
+if command -v shasum >/dev/null 2>&1; then
+  ACTUAL_SHA256=$(shasum -a 256 "${PROTOC_ZIP}" | cut -d' ' -f1)
+else
+  ACTUAL_SHA256=$(sha256sum "${PROTOC_ZIP}" | cut -d' ' -f1)
+fi
+
+if [[ "${ACTUAL_SHA256}" != "${EXPECTED_SHA256}" ]]; then
+  echo "Checksum verification failed!" >&2
+  echo "Expected: ${EXPECTED_SHA256}" >&2
+  echo "Got: ${ACTUAL_SHA256}" >&2
+  rm "${PROTOC_ZIP}"
+  exit 1
+fi
+
+echo "Checksum verified successfully" >&2
+
+# Create a directory for extraction
+SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+INSTALL_DIR="$SCRIPT_DIR/protobuf-bin/protoc-${PROTOBUF_VERSION}"
+mkdir -p "${INSTALL_DIR}"
+
+# Unzip the downloaded file
+unzip -q -o "${PROTOC_ZIP}" -d "${INSTALL_DIR}"
+
+# Clean up the zip file
+rm "${PROTOC_ZIP}"
+
+# Return a new PATH with the protobuf binary
+PROTOC_BIN="${INSTALL_DIR}/bin"
+echo "Installed protoc ${PROTOBUF_VERSION} to ${INSTALL_DIR}" >&2
+
+# Return the protoc bin path to stdout
+printf "${PROTOC_BIN}"

scripts/gen-proto.sh

@@ -4,25 +4,29 @@ set -eou pipefail
 root=$1
 
 proto_array=(
-    core/crypto/pb/crypto.proto
-    core/record/pb/envelope.proto
-    core/peer/pb/peer_record.proto
-    core/sec/insecure/pb/plaintext.proto
-    p2p/host/autonat/pb/autonat.proto
-    p2p/security/noise/pb/payload.proto
-    p2p/transport/webrtc/pb/message.proto
-    p2p/protocol/identify/pb/identify.proto
-    p2p/protocol/circuitv2/pb/circuit.proto
-    p2p/protocol/circuitv2/pb/voucher.proto
-    p2p/protocol/autonatv2/pb/autonatv2.proto
-    p2p/protocol/holepunch/pb/holepunch.proto
-    p2p/host/peerstore/pstoreds/pb/pstore.proto
+  core/crypto/pb/crypto.proto
+  core/record/pb/envelope.proto
+  core/peer/pb/peer_record.proto
+  core/sec/insecure/pb/plaintext.proto
+  p2p/host/autonat/pb/autonat.proto
+  p2p/security/noise/pb/payload.proto
+  p2p/transport/webrtc/pb/message.proto
+  p2p/protocol/identify/pb/identify.proto
+  p2p/protocol/circuitv2/pb/circuit.proto
+  p2p/protocol/circuitv2/pb/voucher.proto
+  p2p/protocol/autonatv2/pb/autonatv2.proto
+  p2p/protocol/holepunch/pb/holepunch.proto
+  p2p/host/peerstore/pstoreds/pb/pstore.proto
 )
 
 proto_paths=""
 for path in "${proto_array[@]}"; do
-    proto_paths+="$path "
+  proto_paths+="$path "
 done
 
+SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+PROTOC_BIN_PATH="$("${SCRIPT_DIR}/download-protoc.sh")"
+export PATH="$PROTOC_BIN_PATH:$PATH"
+
 echo protoc --version $(protoc --version)
 protoc --proto_path=$root --go_out=$root --go_opt=paths=source_relative $proto_paths

scripts/print-protoc-hashes.sh

@@ -0,0 +1,62 @@
+#!/usr/bin/env bash
+set -eou pipefail
+
+# Specify the protobuf release version
+PROTOBUF_VERSION="29.2"
+
+# Define the platforms
+PLATFORMS=("linux-x86_64" "linux-aarch64" "darwin-aarch64")
+
+# Array to store the hashes
+declare -A HASHES
+
+# Function to download and calculate the SHA-256 hash
+calculate_hash() {
+  local platform=$1
+  local protoc_zip
+
+  case "${platform}" in
+  linux-x86_64)
+    protoc_zip="protoc-${PROTOBUF_VERSION}-linux-x86_64.zip"
+    ;;
+  linux-aarch64)
+    protoc_zip="protoc-${PROTOBUF_VERSION}-linux-aarch64.zip"
+    ;;
+  darwin-aarch64)
+    protoc_zip="protoc-${PROTOBUF_VERSION}-osx-aarch_64.zip"
+    ;;
+  *)
+    echo "Unsupported platform: ${platform}"
+    exit 1
+    ;;
+  esac
+
+  # Download the specified version of protobuf
+  download_url="https://github.com/protocolbuffers/protobuf/releases/download/v${PROTOBUF_VERSION}/${protoc_zip}"
+  echo "Downloading from: ${download_url}"
+  curl -LO "${download_url}"
+
+  # Calculate the SHA-256 hash
+  if command -v shasum >/dev/null 2>&1; then
+    sha256_hash=$(shasum -a 256 "${protoc_zip}" | cut -d' ' -f1)
+  else
+    sha256_hash=$(sha256sum "${protoc_zip}" | cut -d' ' -f1)
+  fi
+
+  # Store the hash in the array
+  HASHES["${platform}"]="${sha256_hash}"
+
+  # Clean up the zip file
+  rm "${protoc_zip}"
+}
+
+# Iterate over the platforms and calculate the hashes
+for platform in "${PLATFORMS[@]}"; do
+  calculate_hash "${platform}"
+done
+
+# Print all the hashes together at the end
+echo "Expected SHA-256 hashes for protobuf ${PROTOBUF_VERSION}:"
+for platform in "${!HASHES[@]}"; do
+  echo "[\"${platform}\"]=\"${HASHES[${platform}]}\""
+done