This is to avoid having a warning saying that there is no makefile.dep
file, which will be generated right after the warning and then
included in the Makefile.
Lua 5.3 adds several awesome features of particular interest to nmap including
bitwise operators and integers, a utf8 library, and standard binary pack/unpack
functions.
In addition to adding Lua 5.3, this branch changes:
o Complete removal of the NSE bit library (in C), It has been replaced with
a new Lua library wrapping Lua 5.3's bit-wise operators.
o Complete removal of the NSE bin library (in C). It has been replaced with a
new Lua library wrapping Lua 5.3's string.pack|unpack functions.
o The bin.pack "B" format specifier (which has never worked correctly) is
unimplemented. All scripts/libraries which use it have been updated. Most
usage of this option was to allow string based bit-wise operations which are no
longer necessary now that Lua 5.3 provides integers and bit-wise operators.
o The base32/base64 libraries have been reimplemented using Lua 5.3's new
bitwise operators. (This library was the main user of the bin.pack "B" format
specifier.)
o A new "bits" library has been added for common bit hacks. Currently only has
a reverse function.
Thanks to David Fifield, Daniel Miller, Jacek Wielemborek, and Paulino
Calderon for testing this branch.
The formats has been tested and verified on Mac OS X 10.8.5,
Mac OS X 10.11.5 and Ubuntu 14.04 LTS, all on x86_64 machines
and OSs. It mainly silences warnings. There were no warnings on
Ubuntu but a few on Mac OS, so the fix is intended to silence
warnings on Mac OS whithout triggering new warnings on other OSs.
Example of warnings previously encountered:
netutil.cc:2828:74: warning: format specifies type 'unsigned short'
but the argument has type 'int' [-Wformat]
See http://seclists.org/nmap-dev/2012/q4/334 for why this wasn't really
a big problem. This solution is essentially how netcat-openbsd does it:
mkstemp creates the file and opens it, but then we just unlink it and
only use the returned name. Functionality is pretty much the same as the
tempnam version.
