summaryrefslogtreecommitdiff
blob: 7a43dc6e80e4fc6ff58a4f4c82ee5fb8d1f8fba6 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
# Copyright 1999-2021 Gentoo Authors
# Distributed under the terms of the GNU General Public License v2

EAPI="7"

MODULES_OPTIONAL_USE=modules
MODULES_OPTIONAL_USE_IUSE_DEFAULT=1
inherit eutils linux-info linux-mod multilib toolchain-funcs

DESCRIPTION="iptables extensions not yet accepted in the main kernel"
HOMEPAGE="https://inai.de/projects/xtables-addons/"
SRC_URI="https://inai.de/files/xtables-addons/${P}.tar.xz"

LICENSE="GPL-2"
SLOT="0"
KEYWORDS="amd64 x86"

MODULES="quota2 psd pknock lscan length2 ipv4options ipp2p iface gradm geoip fuzzy condition tarpit sysrq logmark ipmark echo dnetmap dhcpmac delude chaos account"

for mod in ${MODULES}; do
	IUSE="${IUSE} xtables_addons_${mod}"
done

DEPEND=">=net-firewall/iptables-1.6.0"

RDEPEND="${DEPEND}
	xtables_addons_geoip? (
		app-arch/unzip
		dev-perl/Net-CIDR-Lite
		dev-perl/Text-CSV_XS
		virtual/perl-Getopt-Long
	)
"

DEPEND="${DEPEND}
	virtual/linux-sources"

SKIP_MODULES=""

XA_check4internal_module() {
	local mod=${1}
	local version=${3}
	local kconfigname=${3}

	if use xtables_addons_${mod} && kernel_is -gt ${version}; then
		ewarn "${kconfigname} should be provided by the kernel. Skipping its build..."
		if ! linux_chkconfig_present ${kconfigname}; then
			ewarn "Please enable ${kconfigname} target in your kernel
			configuration or disable checksum module in ${PN}."
		fi
		# SKIP_MODULES in case we need to disable building of everything
		# like having this USE disabled
		SKIP_MODULES+=" ${mod}"
	fi
}

pkg_setup() {
	if use modules; then
		get_version
		check_modules_supported
		CONFIG_CHECK="NF_CONNTRACK NF_CONNTRACK_MARK ~CONNECTOR"
		ERROR_CONNECTOR="Please, enable CONFIG_CONNECTOR if you wish to receive userspace notifications from pknock through netlink/connector"
		linux-mod_pkg_setup

		if ! linux_chkconfig_present IPV6; then
			SKIP_IPV6_MODULES="ip6table_rawpost"
			ewarn "No IPV6 support in kernel. Disabling: ${SKIP_IPV6_MODULES}"
		fi
		kernel_is -lt 4 18 && die "${P} requires kernel version >= 4.18"
	fi
}

# Helper for maintainer: cheks if all possible MODULES are listed.
XA_qa_check() {
	local all_modules
	all_modules=$(sed -n '/^build_/{s/build_\(.*\)=.*/\L\1/;G;s/\n/ /;s/ $//;h}; ${x;p}' "${S}/mconfig")
	if [[ ${all_modules} != ${MODULES} ]]; then
		ewarn "QA: Modules in mconfig differ from \$MODULES in ebuild."
		ewarn "Please, update MODULES in ebuild."
		ewarn "'${all_modules}'"
	fi
}

# Is there any use flag set?
XA_has_something_to_build() {
	local mod
	for mod in ${MODULES}; do
		use xtables_addons_${mod} && return
	done

	eerror "All modules are disabled. What do you want me to build?"
	eerror "Please, set XTABLES_ADDONS to any combination of"
	eerror "${MODULES}"
	die "All modules are disabled."
}

# Parse Kbuid files and generates list of sources
XA_get_module_name() {
	[[ $# != 1 ]] && die "XA_get_sources_for_mod: needs exactly one argument."
	local mod objdir build_mod sources_list
	mod=${1}
	objdir=${S}/extensions
	# Take modules name from mconfig
	build_mod=$(sed -n "s/\(build_${mod}\)=.*/\1/Ip" "${S}/mconfig")
	# strip .o, = and everything before = and print
	sources_list=$(sed -n "/^obj-[$][{]${build_mod}[}]/\
		{s:obj-[^+]\+ [+]=[[:space:]]*::;s:[.]o::g;p}" \
				"${objdir}/Kbuild")

	if [[ -d ${S}/extensions/${sources_list} ]]; then
		objdir=${S}/extensions/${sources_list}
		sources_list=$(sed -n "/^obj-m/\
			{s:obj-[^+]\+ [+]=[[:space:]]*::;s:[.]o::g;p}" \
				"${objdir}/Kbuild")
	fi
	for mod_src in ${sources_list}; do
		has ${mod_src} ${SKIP_IPV6_MODULES} || \
			echo " ${mod_src}(xtables_addons:${S}/extensions:${objdir})"
	done
}

# Die on modules known to fail on certain kernel version.
XA_known_failure() {
	local module_name=$1
	local KV_max=$2

	if use xtables_addons_${module_name} && kernel_is ge ${KV_max//./ }; then
		eerror
		eerror "XTABLES_ADDONS=${module_name} fails to build on linux ${KV_max} or above."
		eerror "Either remove XTABLES_ADDONS=${module_name} or use an earlier version of the kernel."
		eerror
		die
	fi
}

src_prepare() {
	XA_qa_check
	XA_has_something_to_build

	# Bug #553630#c2.  echo fails on linux-4 and above.
	# This appears to be fixed, at least as of linux-4.2
	# XA_known_failure "echo" 4

	local mod module_name
	if use modules; then
		MODULE_NAMES="compat_xtables(xtables_addons:${S}/extensions:)"
	fi
	for mod in ${MODULES}; do
		if ! has ${mod} ${SKIP_MODULES} && use xtables_addons_${mod}; then
			sed "s/\(build_${mod}=\).*/\1m/I" -i mconfig || die
			if use modules; then
				for module_name in $(XA_get_module_name ${mod}); do
					MODULE_NAMES+=" ${module_name}"
				done
			fi
		else
			sed "s/\(build_${mod}=\).*/\1n/I" -i mconfig || die
		fi
	done
	einfo "${MODULE_NAMES}" # for debugging

	sed -e 's/depmod -a/true/' -i Makefile.in || die
	sed -e '/^all-local:/{s: modules::}' \
		-e '/^install-exec-local:/{s: modules_install::}' \
			-i extensions/Makefile.in || die

	use xtables_addons_geoip || sed  -e '/^SUBDIRS/{s/geoip//}' -i Makefile.in

	eapply_user
}

src_configure() {
	set_arch_to_kernel # .. or it'll look for /arch/amd64/Makefile
	econf --prefix="${EPREFIX}/" \
		--libexecdir="${EPREFIX}/$(get_libdir)/" \
		--with-kbuild="${KV_OUT_DIR}"
}

src_compile() {
	emake CFLAGS="${CFLAGS}" CC="$(tc-getCC)" V=1
	use modules && BUILD_PARAMS="V=1" BUILD_TARGETS="modules" linux-mod_src_compile
}

src_install() {
	emake DESTDIR="${D}" install
	use modules && linux-mod_src_install
	dodoc -r README doc/*
	find "${ED}" -type f -name '*.la' -exec rm -rf '{}' '+'
}