endaoment

Ensure that user-controlled variables are properly quoted when used in shell commands, especially in pipelines. For arithmetic operations, it is safer to validate the input string to ensure it contains only numeric characters before passing it to `bc`. Alternatively, use a more robust language like Python for arithmetic. **Suggested fix:** Change `echo "$AMOUNT * 1000000"` to `echo "${AMOUNT}" * 1000000` (this is still not fully safe, as the shell will expand the unquoted `* 1000000` part. The most robust fix is to validate `$AMOUNT` with a regex like `^[0-9]+(\.[0-9]+)?$` before use, or use `printf '%s * 1000000\n' "$AMOUNT" | bc` to ensure the entire string is passed as a single argument to `echo`'s stdin, preventing shell expansion of `AMOUNT` itself.) **More robust fix for this specific line:** ```bash if ! [[ "$AMOUNT" =~ ^[0-9]+(\.[0-9]+)?$ ]]; then echo "Error: Invalid amount format." >&2 exit 1 fi AMOUNT_WEI=$(printf '%s * 1000000\n' "$AMOUNT" | bc | cut -d'.' -f1) ```

Ensure that user-controlled variables are properly quoted when used in shell commands, especially in pipelines. For EINs, it is safer to validate the input string to ensure it matches the expected format (e.g., digits and hyphens) before processing. **Suggested fix:** ```bash if ! [[ "$QUERY" =~ ^[0-9]{2}-[0-9]{7}$ || "$QUERY" =~ ^[0-9]{9}$ ]]; then # Handle non-EIN queries or exit if strict EIN format is required # For now, assuming it's an EIN if it matches the regex true # No error for non-EIN, as it might be a name search later fi CLEAN_EIN=$(printf '%s\n' "$QUERY" | tr -d '-') ```