Function format_reference_chain

lib/utils.py:457–481

Colorize a chain of references

(chain)

@memoized
def format_reference_chain(chain):
    """
    Colorize a chain of references
    """
    v = t = vn = None
    text = ""
    if not chain:
        text += "Cannot access memory address"
    else:
        first = True
        for (v, t, vn) in chain:
            if t != "value":
                text += "%s%s " % ("--> " if not first else "", format_address(v, t))
            else:
                text += "%s%s " % ("--> " if not first else "", v)
            first = False

        if vn:
            text += "(%s)" % vn
        else:
            if v != "0x0":
                s = hex2str(v)
                if is_printable(s, "\x00"):
                    text += "(%s)" % string_repr(s.split(b"\x00")[0])
    return text

# vulnerable C functions, source: rats/flawfinder
VULN_FUNCTIONS = [