fetch-vcruntime.sh

#!/usr/bin/env bash
set -euo pipefail

R="$(cd "$(dirname "${BASH_SOURCE[0]}")/.." && pwd)"
DEST="$R/app/Madeira/x86_64-vcruntime"
URL="https://aka.ms/vs/17/release/vc_redist.x64.exe"
TMP="$(mktemp -d "${TMPDIR:-/tmp}/madeira-vcrt.XXXXXX" 2>/dev/null || mktemp -d)"

trap 'rm -rf "$TMP"' EXIT

mkdir -p "$DEST"
mkdir -p "$TMP/cab_out" "$TMP/stage"

echo "fetching VC_redist.x64.exe..."
curl --proto '=https' --tlsv1.2 -fL --retry 3 -o "$TMP/VC_redist.x64.exe" "$URL"

if command -v shasum >/dev/null 2>&1; then
    echo -n "downloaded sha256: "
    shasum -a 256 "$TMP/VC_redist.x64.exe" | awk '{print $1}'
fi

SEVENZIP=""
if command -v 7zz >/dev/null 2>&1; then
    SEVENZIP="7zz"
elif command -v 7z >/dev/null 2>&1; then
    SEVENZIP="7z"
else
    echo "error: 7zz or 7z not found (brew install sevenzip)" >&2
    exit 1
fi

"$SEVENZIP" x "$TMP/VC_redist.x64.exe" -o"$TMP/ext" -y >/dev/null

i=0
while IFS= read -r -d '' cab; do
    i=$((i + 1))
    out="$TMP/cab_out/$i"
    mkdir -p "$out"
    if ! "$SEVENZIP" x "$cab" -o"$out" -y >"$TMP/7z-$i.log" 2>&1; then
        echo "warn: could not extract $cab (log: $TMP/7z-$i.log)" >&2
    fi
done < <(find "$TMP/ext" -type f -iname '*.cab' -print0)

if [ "$i" -eq 0 ]; then
    echo "error: no cab files found in installer" >&2
    exit 1
fi

WANTED=(
    "concrt140.dll"
    "msvcp140.dll"
    "msvcp140_1.dll"
    "msvcp140_2.dll"
    "msvcp140_atomic_wait.dll"
    "msvcp140_codecvt_ids.dll"
    "vcamp140.dll"
    "vccorlib140.dll"
    "vcomp140.dll"
    "vcruntime140.dll"
    "vcruntime140_1.dll"
    "vcruntime140_threads.dll"
    "mfc140.dll"
    "mfc140u.dll"
)

is_x64() {
    python3 -c '
import struct, sys
try:
    with open(sys.argv[1], "rb") as f:
        d = f.read(1024)
        if len(d) >= 0x40 and d[:2] == b"MZ":
            pe = struct.unpack_from("<I", d, 0x3c)[0]
            m = struct.unpack_from("<H", d, pe + 4)[0]
            if m == 0x8664:
                sys.exit(0)
except Exception:
    pass
sys.exit(1)
' "$1" 2>/dev/null
}

missing=()
for name in "${WANTED[@]}"; do
    base="${name%.dll}"
    matches=()
    while IFS= read -r -d '' match; do
        if is_x64 "$match"; then
            matches+=("$match")
        fi
    done < <(find "$TMP/cab_out" -type f \( -iname "$name" -o -iname "${name}_amd64" -o -iname "${name}*" -o -iname "F_CENTRAL_${base}_*" \) -print0)

    if [ "${#matches[@]}" -eq 0 ]; then
        missing+=("$name")
    else
        cp "${matches[0]}" "$TMP/stage/$name"
    fi
done

if [ "${#missing[@]}" -ne 0 ]; then
    echo "error: ${#missing[@]} of ${#WANTED[@]} files not found in installer:" >&2
    for m in "${missing[@]}"; do
        echo "  - $m" >&2
    done
    exit 1
fi

cp "$TMP/stage/"*.dll "$DEST/"
echo "${#WANTED[@]}/${#WANTED[@]} runtime files copied to $DEST"

python3 "$R/tests/host/check-vcruntime.py" --strict