summaryrefslogtreecommitdiff
blob: 40627b9267901a5f537ac16ab8f622ca4a12190e (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
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
# Copyright 1999-2007 Gentoo Foundation
# Distributed under the terms of the GNU General Public License v2
# $Header: /var/cvsroot/gentoo-x86/net-firewall/iptables/iptables-1.3.8-r2.ebuild,v 1.10 2008/01/10 17:59:20 nixnut Exp $

inherit eutils flag-o-matic toolchain-funcs linux-info

L7_PV=2.13
L7_P=netfilter-layer7-v${L7_PV}
IMQ_PATCH=iptables-1.3.6-imq.diff

DESCRIPTION="Linux kernel (2.4+) firewall, NAT and packet mangling tools"
HOMEPAGE="http://www.iptables.org/ http://www.linuximq.net/ http://l7-filter.sf.net/"
SRC_URI="http://iptables.org/projects/iptables/files/${P}.tar.bz2
	imq? ( http://www.linuximq.net/patchs/${IMQ_PATCH} )
	l7filter? ( mirror://sourceforge/l7-filter/${L7_P}.tar.gz )"

LICENSE="GPL-2"
SLOT="0"
KEYWORDS="alpha amd64 arm hppa ia64 m68k ~mips ppc ppc64 s390 sh sparc x86"
IUSE="extensions imq ipv6 l7filter static"

DEPEND="virtual/os-headers
	l7filter? ( virtual/linux-sources )
	imq? ( virtual/linux-sources )"
RDEPEND=""

pkg_setup() {
	if use l7filter || use imq || use extensions ; then
		ewarn "WARNING: 3rd party extensions has been enabled."
		ewarn "This means that iptables will use your currently installed"
		ewarn "kernel in ${KERNEL_DIR} as headers for iptables."
		ewarn
		if use extensions ; then
			ewarn "You may have to patch your kernel to allow iptables to build."
			ewarn "Please check http://ftp.netfilter.org/pub/patch-o-matic-ng/snapshot/ for patches"
			ewarn "for your kernel."
			ewarn
		fi
		linux-info_pkg_setup
	fi

	if kernel_is ge 2 6 20
	then
		L7FILE=${KERNEL_DIR}/net/netfilter/xt_layer7.c
	else
		L7FILE=${KERNEL_DIR}/net/ipv4/netfilter/ipt_layer7.c
	fi
	if use l7filter && \
		[ ! -f "${L7FILE}" ]; then
		die "For layer 7 support emerge net-misc/l7-filter-${L7_PV} before this"
	fi
	if use imq && \
		[ ! -f "${KERNEL_DIR}/net/ipv4/netfilter/ipt_IMQ.c" ]; then
		die "For IMQ support add a patch from http://www.linuximq.net/patches.html to your kernel"
	fi
}

src_unpack() {
	unpack ${P}.tar.bz2
	if use l7filter
	then
		unpack ${L7_P}.tar.gz
	fi
	cd "${S}"

	epatch "${FILESDIR}"/${PN}-1.3.7-sparc64.patch #166201
	epatch "${FILESDIR}"/${PN}-1.3.7-kernel-dir.patch #172209

	EPATCH_OPTS="-p0" \
	epatch "${FILESDIR}"/1.3.1-files/install_ipv6_apps.patch
	EPATCH_OPTS="-p1" \
	epatch "${FILESDIR}"/1.3.1-files/install_all_dev_files.patch-1.3.1

	# this provide's grsec's stealth match
	EPATCH_OPTS="-p0" \
	epatch "${FILESDIR}"/1.3.1-files/grsecurity-1.2.8-iptables.patch-1.3.1
	sed -i \
		-e "s/PF_EXT_SLIB:=/PF_EXT_SLIB:=stealth /g" \
		extensions/Makefile || die "failed to enable stealth extension"

	local check base=${PORTAGE_CONFIGROOT}/etc/portage/patches
	for check in {${CATEGORY}/${PF},${CATEGORY}/${P},${CATEGORY}/${PN}}; do
		EPATCH_SOURCE=${base}/${CTARGET}/${check}
		[[ -r ${EPATCH_SOURCE} ]] || EPATCH_SOURCE=${base}/${CHOST}/${check}
		[[ -r ${EPATCH_SOURCE} ]] || EPATCH_SOURCE=${base}/${check}
		if [[ -d ${EPATCH_SOURCE} ]] ; then
			EPATCH_SUFFIX="patch"
			EPATCH_FORCE="yes" \
			EPATCH_MULTI_MSG="Applying user patches from ${EPATCH_SOURCE} ..." \
			epatch
			break
		fi
	done

	if use imq ; then
		EPATCH_OPTS="-p1" epatch "${DISTDIR}"/${IMQ_PATCH}
		for OA in extensions/.IMQ-test extensions/.IMQ-test6 ; do
			mv ${OA} ${OA}.orig
			tr '\015' '\012'  < ${OA}.orig > ${OA}
			rm ${OA}.orig
		done
		chmod +x extensions/.IMQ-test*
	fi
	if use l7filter ; then
		#yes choosing 2.6.20 was deliberate - upstream mistake possibly
		if kernel_is ge 2 6 20
		then
			L7_PATCH=iptables-for-kernel-2.6.20forward-layer7-${L7_PV}.patch
		else
			L7_PATCH=iptables-for-kernel-pre2.6.20-layer7-${L7_PV}.patch
		fi
		EPATCH_OPTS="-p1" epatch "${WORKDIR}"/${L7_P}/${L7_PATCH}
		chmod +x extensions/.layer7-test*
	fi

	# the net directory is moving around so account for new/old locations
	cd "${S}"/extensions
	local x
	for x in .*-test* ; do
		sed -e 's:net/ipv[46]/netfilter:net/netfilter:g' ${x} > .new-${x}
		if cmp ${x} .new-${x} > /dev/null ; then
			rm -f .new-${x}
		else
			chmod a+rx .new-${x}
		fi
	done
}

src_defs() {
	# these are used in both of src_compile and src_install
	myconf=""
	myconf="${myconf} PREFIX="
	myconf="${myconf} LIBDIR=/$(get_libdir)"
	myconf="${myconf} BINDIR=/sbin"
	myconf="${myconf} MANDIR=/usr/share/man"
	myconf="${myconf} INCDIR=/usr/include"
	# iptables and libraries are now installed to /sbin and /lib, so that
	# systems with remote network-mounted /usr filesystems can get their
	# network interfaces up and running correctly without /usr.
	use ipv6 || myconf="${myconf} DO_IPV6=0"
	use static && myconf="${myconf} NO_SHARED_LIBS=0"
	export myconf
	if ! use l7filter && ! use imq && ! use extensions ; then
		export KERNEL_DIR=$(
			# ugh -- iptables has scripts which check for the existence of
			# files so we need to give it the right path to our toolchains
			# include dir where the linux headers are.
			# FYI IPTABLES: YOU FAIL
			echo '#include <linux/limits.h>' | $(tc-getCPP) - | grep -o '/[^"]*linux/limits.h' | sed s:/include/linux/limits.h::
		)
		diemsg="failure"
	else
		diemsg="failure - with l7filter and/or imq patch and/or other miscellanious patches added"
	fi
	export diemsg
}

src_compile() {
	src_defs

	# iptables will NOT work correctly unless -O[123] are present!
	replace-flags -O0 -O2
	get-flag -O || append-flags -O2
	# cannot work with the following according to Makefile near check:
	# -g -pg -DIPTC_DEBUG

	emake -j1 \
		COPT_FLAGS="${CFLAGS}" ${myconf} \
		KERNEL_DIR="${KERNEL_DIR}" \
		CC="$(tc-getCC)" \
		|| die "${diemsg}"
}

src_install() {
	src_defs
	make ${myconf} \
		DESTDIR="${D}" \
		KERNEL_DIR="${KERNEL_DIR}" \
		install install-devel || die "${diemsg}"

	dodir /usr/$(get_libdir)
	mv -f "${D}"/$(get_libdir)/*.a "${D}"/usr/$(get_libdir)

	keepdir /var/lib/iptables
	newinitd "${FILESDIR}"/${PN}-1.3.2.init iptables
	newconfd "${FILESDIR}"/${PN}-1.3.2.confd iptables

	if use ipv6 ; then
		keepdir /var/lib/ip6tables
		newinitd "${FILESDIR}"/iptables-1.3.2.init ip6tables
		newconfd "${FILESDIR}"/ip6tables-1.3.2.confd ip6tables
	fi
}

pkg_postinst() {
	elog "This package now includes an initscript which loads and saves"
	elog "rules stored in /var/lib/iptables/rules-save"
	use ipv6 && elog "and /var/lib/ip6tables/rules-save"
	elog "This location can be changed in /etc/conf.d/iptables"
	elog
	elog "If you are using the iptables initsscript you should save your"
	elog "rules using the new iptables version before rebooting."
	elog
	elog "If you are upgrading to a >=2.4.21 kernel you may need to rebuild"
	elog "iptables."
	elog
	ewarn "!!! ipforwarding is not a part of the iptables initscripts."
	ewarn
	ewarn "To enable ipforwarding at bootup:"
	ewarn "/etc/sysctl.conf and set net.ipv4.ip_forward = 1"
	if use ipv6 ; then
		ewarn "and/or"
		ewarn "  net.ipv6.ip_forward = 1"
		ewarn "for ipv6."
	fi
	if has_version '=net-firewall/iptables-1.2*' ; then
		ewarn
		ewarn "When upgrading from iptables-1.2.x, you may be unable to remove"
		ewarn "rules added with iptables-1.2.x.  This is a known issue, please see:"
		ewarn "http://bugs.gentoo.org/92535"
	fi
}