[meta-networking][PATCH] strongswan: Split plugins

[David Vincent <freesilicon@gmail.com>]

strongSwan offers a plugin mechanism therefore it should not be
mandatory to install all of them when installing the package. Each
plugin is now a self-contained package with the library and its
configuration.

To remain compatible with the current configuration, a default set of
plugins has been selected as RDEPENDS of the main package. This default
list is based on the default strongSwan list minus some plugins enabled
via PACKAGECONFIG
(see https://wiki.strongswan.org/projects/strongswan/PluginList).

Signed-off-by: David Vincent <freesilicon@gmail.com>
---
 .../recipes-support/strongswan/strongswan_5.5.1.bb | 101 ++++++++++++++++++---
 1 file changed, 88 insertions(+), 13 deletions(-)

diff --git a/meta-networking/recipes-support/strongswan/strongswan_5.5.1.bb b/meta-networking/recipes-support/strongswan/strongswan_5.5.1.bb
index f9e7ae3c1..d63214ba4 100644
--- a/meta-networking/recipes-support/strongswan/strongswan_5.5.1.bb
+++ b/meta-networking/recipes-support/strongswan/strongswan_5.5.1.bb
@@ -24,17 +24,17 @@ EXTRA_OECONF += "${@bb.utils.contains('DISTRO_FEATURES', 'systemd', '--with-syst
 PACKAGECONFIG ??= "charon curl gmp openssl stroke sqlite3 \
         ${@bb.utils.filter('DISTRO_FEATURES', 'ldap', d)} \
 "
-PACKAGECONFIG[aesni] = "--enable-aesni,--disable-aesni,"
+PACKAGECONFIG[aesni] = "--enable-aesni,--disable-aesni,,${PN}-plugin-aesni"
 PACKAGECONFIG[charon] = "--enable-charon,--disable-charon,"
-PACKAGECONFIG[curl] = "--enable-curl,--disable-curl,curl,"
-PACKAGECONFIG[gmp] = "--enable-gmp,--disable-gmp,gmp,"
-PACKAGECONFIG[ldap] = "--enable-ldap,--disable-ldap,openldap,"
-PACKAGECONFIG[mysql] = "--enable-mysql,--disable-mysql,mysql5,"
-PACKAGECONFIG[openssl] = "--enable-openssl,--disable-openssl,openssl,"
+PACKAGECONFIG[curl] = "--enable-curl,--disable-curl,curl,${PN}-plugin-curl"
+PACKAGECONFIG[gmp] = "--enable-gmp,--disable-gmp,gmp,${PN}-plugin-gmp"
+PACKAGECONFIG[ldap] = "--enable-ldap,--disable-ldap,openldap,${PN}-plugin-ldap"
+PACKAGECONFIG[mysql] = "--enable-mysql,--disable-mysql,mysql5,${PN}-plugin-mysql"
+PACKAGECONFIG[openssl] = "--enable-openssl,--disable-openssl,openssl,${PN}-plugin-openssl"
 PACKAGECONFIG[scep] = "--enable-scepclient,--disable-scepclient,"
-PACKAGECONFIG[soup] = "--enable-soup,--disable-soup,libsoup-2.4,"
-PACKAGECONFIG[sqlite3] = "--enable-sqlite,--disable-sqlite,sqlite3,"
-PACKAGECONFIG[stroke] = "--enable-stroke,--disable-stroke,"
+PACKAGECONFIG[soup] = "--enable-soup,--disable-soup,libsoup-2.4,${PN}-plugin-soup"
+PACKAGECONFIG[sqlite3] = "--enable-sqlite,--disable-sqlite,sqlite3,${PN}-plugin-sqlite"
+PACKAGECONFIG[stroke] = "--enable-stroke,--disable-stroke,,${PN}-plugin-stroke"
 PACKAGECONFIG[swanctl] = "--enable-swanctl,--disable-swanctl,,libgcc"
 
 # requires swanctl
@@ -44,10 +44,85 @@ inherit autotools systemd pkgconfig
 
 RRECOMMENDS_${PN} = "kernel-module-ipsec"
 
-FILES_${PN} += "${libdir}/ipsec/lib*${SOLIBS} ${libdir}/ipsec/plugins/*.so"
-FILES_${PN}-dbg += "${libdir}/ipsec/.debug ${libdir}/ipsec/plugins/.debug ${libexecdir}/ipsec/.debug"
-FILES_${PN}-dev += "${libdir}/ipsec/lib*${SOLIBSDEV} ${libdir}/ipsec/*.la ${libdir}/ipsec/plugins/*.la"
-FILES_${PN}-staticdev += "${libdir}/ipsec/*.a ${libdir}/ipsec/plugins/*.a"
+FILES_${PN} += "${libdir}/ipsec/lib*${SOLIBS}"
+FILES_${PN}-dbg += "${bindir}/.debug ${libdir}/ipsec/.debug ${libexecdir}/ipsec/.debug"
+FILES_${PN}-dev += "${libdir}/ipsec/lib*${SOLIBSDEV} ${libdir}/ipsec/*.la"
+FILES_${PN}-staticdev += "${libdir}/ipsec/*.a"
+
+CONFFILES_${PN} = "${sysconfdir}/*.conf ${sysconfdir}/ipsec.d/*.conf ${sysconfdir}/strongswan.d/*.conf"
+
+PACKAGES += "${PN}-plugins"
+ALLOW_EMPTY_${PN}-plugins = "1"
+
+PACKAGES_DYNAMIC += "^${PN}-plugin-.*$"
+NOAUTOPACKAGEDEBUG = "1"
+
+python split_strongswan_plugins () {
+    sysconfdir = d.expand('${sysconfdir}/strongswan.d/charon')
+    libdir = d.expand('${libdir}/ipsec/plugins')
+    dbglibdir = os.path.join(libdir, '.debug')
+
+    def add_plugin_conf(f, pkg, file_regex, output_pattern, modulename):
+        dvar = d.getVar('PKGD', True)
+        oldfiles = d.getVar('CONFFILES_' + pkg, True)
+        newfile = '/' + os.path.relpath(f, dvar)
+
+        if not oldfiles:
+            d.setVar('CONFFILES_' + pkg, newfile)
+        else:
+            d.setVar('CONFFILES_' + pkg, oldfiles + " " + newfile)
+
+    split_packages = do_split_packages(d, libdir, 'libstrongswan-(.*)\.so', '${PN}-plugin-%s', 'strongSwan %s plugin', prepend=True)
+    do_split_packages(d, sysconfdir, '(.*)\.conf', '${PN}-plugin-%s', 'strongSwan %s plugin', prepend=True, hook=add_plugin_conf)
+
+    split_dbg_packages = do_split_packages(d, dbglibdir, 'libstrongswan-(.*)\.so', '${PN}-plugin-%s-dbg', 'strongSwan %s plugin - Debugging files', prepend=True, extra_depends='${PN}-dbg')
+    split_dev_packages = do_split_packages(d, libdir, 'libstrongswan-(.*)\.la', '${PN}-plugin-%s-dev', 'strongSwan %s plugin - Development files', prepend=True, extra_depends='${PN}-dev')
+    split_staticdev_packages = do_split_packages(d, libdir, 'libstrongswan-(.*)\.a', '${PN}-plugin-%s-staticdev', 'strongSwan %s plugin - Development files (Static Libraries)', prepend=True, extra_depends='${PN}-staticdev')
+
+    if split_packages:
+        pn = d.getVar('PN', True)
+        d.setVar('RRECOMMENDS_' + pn + '-plugins', ' '.join(split_packages))
+        d.appendVar('RRECOMMENDS_' + pn + '-dbg', ' ' + ' '.join(split_dbg_packages))
+        d.appendVar('RRECOMMENDS_' + pn + '-dev', ' ' + ' '.join(split_dev_packages))
+        d.appendVar('RRECOMMENDS_' + pn + '-staticdev', ' ' + ' '.join(split_staticdev_packages))
+}
+
+PACKAGESPLITFUNCS_prepend = "split_strongswan_plugins "
+
+# Install some default plugins based on default strongSwan ./configure options
+# See https://wiki.strongswan.org/projects/strongswan/wiki/Pluginlist
+RDEPENDS_${PN} += "\
+    ${PN}-plugin-aes \
+    ${PN}-plugin-attr \
+    ${PN}-plugin-cmac \
+    ${PN}-plugin-constraints \
+    ${PN}-plugin-des \
+    ${PN}-plugin-dnskey \
+    ${PN}-plugin-hmac \
+    ${PN}-plugin-kernel-netlink \
+    ${PN}-plugin-md5 \
+    ${PN}-plugin-nonce \
+    ${PN}-plugin-pem \
+    ${PN}-plugin-pgp \
+    ${PN}-plugin-pkcs1 \
+    ${PN}-plugin-pkcs7 \
+    ${PN}-plugin-pkcs8 \
+    ${PN}-plugin-pkcs12 \
+    ${PN}-plugin-pubkey \
+    ${PN}-plugin-random \
+    ${PN}-plugin-rc2 \
+    ${PN}-plugin-resolve \
+    ${PN}-plugin-revocation \
+    ${PN}-plugin-sha1 \
+    ${PN}-plugin-sha2 \
+    ${PN}-plugin-socket-default \
+    ${PN}-plugin-sshkey \
+    ${PN}-plugin-updown \
+    ${PN}-plugin-vici \
+    ${PN}-plugin-x509 \
+    ${PN}-plugin-xauth-generic \
+    ${PN}-plugin-xcbc \
+    "
 
 RPROVIDES_${PN} += "${PN}-systemd"
 RREPLACES_${PN} += "${PN}-systemd"
-- 
2.12.2