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nmap: add sub-options for ncat, nping and ndiff

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The forthcoming "libvirt" package will need a "nc" command with support
for Unix domain sockets in order to permit remote management using the
virt-manager utility. netcat-openbsd provides such command but requires
glibc, so we would not have remote management on uClibc-based systems.

Ncat is a much-improved reimplementation of the venerable Netcat and is
compatible with uClibc and musl. It provides features not available in
the ancient GNU netcat and its Busybox double like IPv6, proxies, and
Unix sockets.

Since 'nmap' itself is a fairly big program (~2.3 MB), we want to be
able to install only ncat. In addition, nmap requires an external
library, pcre.

So this commit adds sub-options to selectively enable/disable the
different programs part of nmap: nmap, nping, ndiff and ncat.

Finally, we symlink 'nc' to ncat if neiter netcat nor netcat-openbsd
is selected, even though ncat does not have the same interface as
netcat-openbsd.  However, since Fedora/RHEL install nmap-ncat as 'nc',
it can be assumed that packages that depend on 'nc' know how to deal
with this diversity.  For example, the virt-manager package does
that. Also user-supplied scripts can be assumed to do the right thing,
since the user also selects whether nmap-ncat, netcat or
netcat-openbsd is installed.

Signed-off-by: Carlos Santos <casantos@datacom.ind.br>
[Thomas:
 - don't just handle the ncat case in a special way: create
   sub-options for all nmap tools, and use <pkg>_MAKE_OPTS and
   <pkg>_INSTALL_TARGET_OPTS to select which ones should be
   built/installed.]
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
This commit is contained in:
Carlos Santos 2017-11-27 08:41:29 -02:00 committed by Thomas Petazzoni
parent 1189d03fe7
commit 55ec9b4e40
2 changed files with 90 additions and 7 deletions
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47
package/nmap/Config.in
View File

@ -4,13 +4,56 @@ config BR2_PACKAGE_NMAP
depends on BR2_USE_MMU # fork()
depends on BR2_TOOLCHAIN_HAS_THREADS
select BR2_PACKAGE_LIBPCAP
select BR2_PACKAGE_PCRE
select BR2_PACKAGE_NMAP_NMAP \
if !BR2_PACKAGE_NMAP_NCAT && !BR2_PACKAGE_NMAP_NPING && !BR2_PACKAGE_NMAP_NDIFF
help
Nmap ("Network Mapper") is a free and open source (license)
utility for network discovery and security auditing.
http://nmap.org
comment "nmap needs a toolchain w/ C++, threads"
if BR2_PACKAGE_NMAP
config BR2_PACKAGE_NMAP_NCAT
bool "install ncat"
depends on BR2_PACKAGE_BUSYBOX_SHOW_OTHERS
help
Ncat is a feature-packed networking utility which reads and
writes data across networks from the command line. Ncat was
written for the Nmap Project as a much-improved
reimplementation of the venerable Netcat.
If symlink to "nc" is installed if neither netcat or
netcat-openbsd is selected.
comment "a symlink from ncat to 'nc' will be installed"
depends on BR2_PACKAGE_NMAP_NCAT
depends on !BR2_PACKAGE_NETCAT
depends on !BR2_PACKAGE_NETCAT_OPENBSD
config BR2_PACKAGE_NMAP_NDIFF
bool "install ndiff"
# ndiff only works with python2.x
depends on BR2_PACKAGE_PYTHON
help
This option installs the 'ndiff' tool.
comment "ndiff needs Python 2.x"
depends on !BR2_PACKAGE_PYTHON
config BR2_PACKAGE_NMAP_NMAP
bool "install nmap"
select BR2_PACKAGE_PCRE
help
This option installs 'nmap' itself.
config BR2_PACKAGE_NMAP_NPING
bool "install nping"
help
This option installs the 'nping' tool.
endif
comment "nmap-nmap needs a toolchain w/ C++, threads"
depends on BR2_USE_MMU
depends on !(BR2_INSTALL_LIBSTDCPP && BR2_TOOLCHAIN_HAS_THREADS)

50
package/nmap/nmap.mk
View File

@ -7,10 +7,9 @@
NMAP_VERSION = 7.60
NMAP_SITE = https://nmap.org/dist
NMAP_SOURCE = nmap-$(NMAP_VERSION).tar.bz2
NMAP_DEPENDENCIES = libpcap pcre host-autoconf
NMAP_DEPENDENCIES = libpcap host-autoconf
NMAP_CONF_OPTS = --without-liblua --without-zenmap \
--with-libdnet=included --with-liblinear=included \
--with-libpcre="$(STAGING_DIR)/usr" --without-ncat
--with-libdnet=included --with-liblinear=included
NMAP_LICENSE = GPL-2.0
NMAP_LICENSE_FILES = COPYING
@ -51,11 +50,52 @@ else
NMAP_CONF_OPTS += --without-openssl
endif
# ndiff only works with python2.x
ifeq ($(BR2_PACKAGE_PYTHON),y)
NMAP_INSTALL_TARGET_OPTS = DESTDIR=$(TARGET_DIR)
ifeq ($(BR2_PACKAGE_NMAP_NCAT),y)
NMAP_CONF_OPTS += --with-ncat
NMAP_MAKE_OPTS += build-ncat
NMAP_INSTALL_TARGET_OPTS += install-ncat
else
NMAP_CONF_OPTS += --without-ncat
endif
ifeq ($(BR2_PACKAGE_NMAP_NDIFF),y)
NMAP_DEPENDENCIES += python
NMAP_CONF_OPTS += --with-ndiff
NMAP_MAKE_OPTS += build-ndiff
NMAP_INSTALL_TARGET_OPTS += install-ndiff
else
NMAP_CONF_OPTS += --without-ndiff
endif
ifeq ($(BR2_PACKAGE_NMAP_NMAP),y)
NMAP_DEPENDENCIES += pcre
NMAP_CONF_OPTS += --with-libpcre="$(STAGING_DIR)/usr"
NMAP_MAKE_OPTS += nmap
NMAP_INSTALL_TARGET_OPTS += install-nmap
endif
ifeq ($(BR2_PACKAGE_NMAP_NPING),y)
NMAP_CONF_OPTS += --with-nping
NMAP_MAKE_OPTS += build-nping
NMAP_INSTALL_TARGET_OPTS += install-nping
else
NMAP_CONF_OPTS += --without-nping
endif
# If we are going to install ncat, ensure Busybox gets built/installed
# before, so that this package overrides Busybox nc.
ifeq ($(BR2_PACKAGE_NMAP_NCAT)$(BR2_PACKAGE_BUSYBOX),yy)
NMAP_DEPENDENCIES += busybox
endif
# Add a symlink to "nc" if none of the competing netcats is selected
ifeq ($(BR2_PACKAGE_NMAP_NCAT):$(BR2_PACKAGE_NETCAT)$(BR2_PACKAGE_NETCAT_OPENBSD),y:)
define NMAP_INSTALL_NCAT_SYMLINK
ln -fs ncat $(TARGET_DIR)/usr/bin/nc
endef
NMAP_POST_INSTALL_TARGET_HOOKS += NMAP_INSTALL_NCAT_SYMLINK
endif
$(eval $(autotools-package))