Add initial set of ebuilds for Jitsi Meet on 64-bit Gentoo ^-^

Covers the baseline component set (usrsctp, videobridge, jicofo, etc)
for amd64 (x86_64) and arm64 (aarch64). Maven ebuilds are from source,
leveraging the provided java-maven-pkg eclass / mvn2ebuild flow
(although note that essentially all _dependency_ libs are currently
still pulled in as pre-built jars from upstream; there's a huge chunk
of work needed to bring each of these into Portage).

Supports OpenRC and systemd; nginx (preferred) and apache webservers;
automated Let's Encrypt certificate issuance / renewal is integrated.

Also, provides a cross-component configuration process that follows
(broadly) upstream's debconf / postinst flow.

To install the full (server-side) complex, issue:
  emerge net-im/jitsi-meet-server

Then configure (using a debconf-style Q&A), via:
  emerge --config net-im/jitsi-meet-master-config

Once that's done, start up the server complex, by issuing:
  rc-service jitsi-meet-server start   # OpenRC, or
  systemctl start jitsi-meet-server    # systemd

Many thanks to the various contributors on
  jitsi/docker-jitsi-meet#195
for showing how to build the usrsctp component on arm64!

acct-group/jitsi/jitsi-0.ebuild

@@ -0,0 +1,10 @@
+# Copyright (c) 2020 sakaki <[email protected]>
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=7
+
+inherit acct-group
+
+DESCRIPTION="A group for Jitsi services"
+ACCT_GROUP_ID=377
+

acct-group/jitsi/metadata.xml

@@ -0,0 +1,12 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE pkgmetadata SYSTEM "http://www.gentoo.org/dtd/metadata.dtd">
+<pkgmetadata>
+	<maintainer type="person">
+		<email>[email protected]</email>
+		<name>sakaki</name>
+	</maintainer>
+	<longdescription>
+		A group for Jitsi services
+	</longdescription>
+</pkgmetadata>
+

acct-user/jicofo/jicofo-0.ebuild

@@ -0,0 +1,15 @@
+# Copyright (c) 2020 sakaki <[email protected]>
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=7
+
+inherit acct-user
+
+DESCRIPTION="A user for JItsi COnference FOcus server"
+ACCT_USER_ID=377
+ACCT_USER_GROUPS=( jitsi )
+ACCT_USER_HOME=/etc/jitsi/jicofo
+ACCT_USER_HOME_PERMS=0750
+
+acct-user_add_deps
+

acct-user/jicofo/metadata.xml

@@ -0,0 +1,12 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE pkgmetadata SYSTEM "http://www.gentoo.org/dtd/metadata.dtd">
+<pkgmetadata>
+	<maintainer type="person">
+		<email>[email protected]</email>
+		<name>sakaki</name>
+	</maintainer>
+	<longdescription>
+		A user for JItsi COnference FOcus server
+	</longdescription>
+</pkgmetadata>
+

acct-user/jvb/jvb-0.ebuild

@@ -0,0 +1,15 @@
+# Copyright (c) 2020 sakaki <[email protected]>
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=7
+
+inherit acct-user
+
+DESCRIPTION="A user for Jitsi Videobridge SFU"
+ACCT_USER_ID=376
+ACCT_USER_GROUPS=( jitsi )
+ACCT_USER_HOME=/etc/jitsi/videobridge
+ACCT_USER_HOME_PERMS=0750
+
+acct-user_add_deps
+

acct-user/jvb/metadata.xml

@@ -0,0 +1,12 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE pkgmetadata SYSTEM "http://www.gentoo.org/dtd/metadata.dtd">
+<pkgmetadata>
+	<maintainer type="person">
+		<email>[email protected]</email>
+		<name>sakaki</name>
+	</maintainer>
+	<longdescription>
+		A user for Jitsi Videobridge SFU
+	</longdescription>
+</pkgmetadata>
+

app-portage/mvn2ebuild/files/mvn2ebuild-1

@@ -0,0 +1,112 @@
+#!/bin/bash
+#
+# Run in the top-level of a Maven project (once you have it
+# building correctly) in place of the "mvn" command, and
+# a 'starter' ebuild, using java-maven-pkg, will be
+# emitted to stdout (all other output is to stderr).
+#
+# Copyright (c) 2020 sakaki <[email protected]>
+# License: GPL v3+
+# NO WARRANTY
+
+
+T="$(mktemp -d)"
+D="${T##*/}"
+
+if [[ -z ${@} ]]; then
+	EMAVEN_PARAMS="-DskipTests -Dassembly.skipAssembly=false clean package install -f pom.xml"
+else
+	EMAVEN_PARAMS="${@}"
+fi
+if [[ $(uname -m) == "aarch64" ]]; then
+	EMAVEN_PARAMS+=" -Dos.detected.name=linux -Dos.detected.arch=aarch_64 -Dos.detected.classifier=linux-aarch_64"
+else
+	EMAVEN_PARAMS+=" -Dos.detected.name=linux -Dos.detected.arch=x86_64 -Dos.detected.classifier=linux-x86_64"
+fi
+EMAVEN_PARAMS+=" --batch-mode -Dmaven.repo.local=${T}"
+
+GIT_ECLASS=""
+GIT_DEFBLOCK=""
+
+# are we in a git repo?
+if GIT_COMMIT="$(git rev-parse HEAD)" 2>/dev/null; then
+	GIT_ECLASS=" git-r3"
+	GIT_BRANCH="$(git rev-parse --abbrev-ref HEAD)"
+	GIT_REMOTE_URL="$(git remote get-url origin)"
+	GIT_DEFBLOCK="
+EGIT_REPO_URI=\"${GIT_REMOTE_URL%.git}.git\"
+EGIT_BRANCH=\"${GIT_BRANCH}\"
+EGIT_COMMIT=\"${GIT_COMMIT}\"
+"
+fi
+
+echo "Running Maven: all output to stderr..." >&2
+echo "Params: ${EMAVEN_PARAMS}" >&2
+
+EMAVEN_VENDOR_DEFS="$(mvn ${EMAVEN_PARAMS} |& tee /dev/fd/2 | \
+	grep 'Downloaded' | \
+	grep -o 'https[^[:space:]]*' | sort | uniq | \
+	sed -r 's/^/\t"/g;s/$/"/g;s#(releases|maven2)/+#\1 #g;s#/(org|com|net)/# \1/#g')"
+
+rm -rf "/tmp/${D}"
+
+echo "Ouputting skeleton ebuild to stdout..." >&2
+
+cat <<EOF
+# Copyright 2020 <yourname> (<[email protected]>)
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=7
+
+JAVA_PKG_IUSE=""
+
+inherit unpacker java-pkg-2 java-maven-pkg${GIT_ECLASS}
+
+DESCRIPTION=""
+SRC_URI=""
+HOMEPAGE=""
+RESTRICT="mirror"
+
+JAVA_PKG_NO_CLEAN=1
+
+LICENSE="Apache-2.0"
+SLOT="0"
+KEYWORDS="~amd64 ~arm64"
+IUSE=""
+${GIT_DEFBLOCK}
+CP_DEPEND="
+"
+CDEPEND="
+"
+DEPEND="
+	\${CP_DEPEND}
+	\${CDEPEND}
+"
+RDEPEND="
+	\${CP_DEPEND}
+	\${CDEPEND}
+	>=virtual/jre-1.8
+"
+BDEPEND="
+	\${CP_DEPEND}
+	\${CDEPEND}
+	>=virtual/jdk-1.8
+"
+
+JAVA_GENTOO_CLASSPATH=""
+JAVA_GENTOO_CLASSPATH_EXTRA=""
+
+EMAVEN_VENDOR=(
+${EMAVEN_VENDOR_DEFS}
+)
+
+setup_maven_src_uri
+
+PATCHES=(
+)
+
+EMAVEN_PARAMS+=""
+#EMAVEN_INSTALL_JAR_FROM=""
+#EMAVEN_INSTALL_JAR_TO=""
+
+EOF

app-portage/mvn2ebuild/files/mvn2ebuild.1

@@ -0,0 +1,93 @@
+.nh
+.TH MVN2EBUILD 1 "Version 1.0.0: May 2020"
+.SH NAME
+.PP
+mvn2ebuild \- create a starter ebuild for a Maven project
+
+.SH SYNOPSIS
+.PP
+\fB\fCmvn2ebuild\fR [\fIMVN\_OPTIONS\fP]
+
+.SH DESCRIPTION
+.PP
+\fB\fCmvn2ebuild\fR is a simple script that can be used to create a 'starter'
+ebuild from a (working) Maven Java project. It is invoked in place
+of \fB\fCmvn\fR, in the top level directory, passing any options that
+would normally be given to \fB\fCmvn\fR (\fB\fC\-DskipTests\fR etc.)
+
+.PP
+The resulting ebuild is emitted to stdout; any other messages are
+sent to stderr.
+
+.PP
+The (usually long) list of URLs of all the jars, poms,
+etc that are required to be present in the Maven
+cache, in order to build and run the project, will be explicitly
+captured in the \fIEMAVEN\_VENDOR\fP array in the resulting ebuild
+(transformed into the correct format for use
+by the \fB\fCjava\-mavan\-pkg\fR eclass, which it inherits).
+
+.PP
+This, in turn, allows for the construction (via the eclass) of
+an 'on\-the\-fly' Maven cache during the
+ebuild's \fB\fCsrc\_prepare()\fR phase, sufficient to allow the rest of
+the build to proceed without needing to hit the network at all
+(necessary, if it is to run properly inside the \fB\fCportage\fR(5) sandbox).
+
+.PP
+You will almost certainly need to provide further functionality to
+the resulting ebuild, before it is ready for deployment.
+
+.SH OPTIONS
+.PP
+\fB\fC[MVN\_OPTIONS]\fR
+   Pass any options to \fB\fCmvn2ebuild\fR that you normally would to your
+   (working) \fB\fCmvn\fR clean build invocation. By default (if nothing is passed)
+   the following 'equivalent' Maven invocation will be assumed:
+   \fB\fCmvn \-DskipTests \-Dassembly.skipAssembly=false clean package install \-f pom.xml\fR
+   Note that \fB\fCmvn2ebuild\fR also passes
+   \fB\fC\-Dos.detected.{name,os,classifier}\fR parameters, to ensure these
+   are set correctly.
+
+.SH ALGORITHM
+.PP
+The script works by invoking \fB\fCmvn\fR with a temporary cache that is
+initially empty, and then recording all files downloaded, using these
+to populate the \fIEMAVEN\_VENDOR\fP array in the ebuild.
+
+.PP
+If invoked inside a \fB\fCgit\fR(1) repository, \fB\fCmvn2ebuild\fR will
+automatically inherit the \fB\fCgit\-r3\fR eclass in the ebuild, and
+set \fIEGIT\_REPO\_URI\fP, \fIEGIT\_BRANCH\fP and \fIEGIT\_COMMIT\fP appropriately.
+
+.SH BUGS
+.PP
+This is a very simple script, so many edge cases exist that can fool
+it. For example, if you pass some build options, but omit \fB\fCclean\fR, then
+the resulting \fIEMAVEN\_VENDOR\fP may be incomplete. The parsing out of
+Maven coordinates from captured URLs is primitive and may not work
+in certain cases. No attempt to create e.g. appropriate \fB\fCsrc\_install()\fR
+functions for zipped assemblies (etc.) is attempted (you need to roll
+your own install in such a case, but that is not particularly difficult).
+
+.SH COPYRIGHT
+.PP
+Copyright © 2020 sakaki
+
+.PP
+License GPLv3+ (GNU GPL version 3 or later)
+http://gnu.org/licenses/gpl.html
+\[la]http://gnu.org/licenses/gpl.html\[ra]
+
+.PP
+This is free software, you are free to change and redistribute it.
+There is NO WARRANTY, to the extent permitted by law.
+
+.SH AUTHOR
+.PP
+sakaki — send bug reports or comments to [email protected]
+\[la]mailto:[email protected]\[ra]
+
+.SH SEE ALSO
+.PP
+\fB\fCebuild\fR(5), \fB\fCgit\fR(1), \fB\fCportage\fR(5)

app-portage/mvn2ebuild/files/mvn2ebuild.md

@@ -0,0 +1,101 @@
+MVN2EBUILD 1 "Version 1.0.0: May 2020"
+======================================
+
+[//]: # ( Convert to manpage using e.g. go-md2man -in=mvn2ebuild.md -out=mvn2ebuild.1 )
+
+NAME
+----
+
+mvn2ebuild - create a starter ebuild for a Maven project
+
+SYNOPSIS
+--------
+
+`mvn2ebuild` [*MVN_OPTIONS*]
+
+DESCRIPTION
+-----------
+
+`mvn2ebuild` is a simple script that can be used to create a 'starter'
+ebuild from a (working) Maven Java project. It is invoked in place
+of `mvn`, in the top level directory, passing any options that
+would normally be given to `mvn` (`-DskipTests` etc.)
+
+The resulting ebuild is emitted to stdout; any other messages are
+sent to stderr.
+
+The (usually long) list of URLs of all the jars, poms,
+etc that are required to be present in the Maven
+cache, in order to build and run the project, will be explicitly
+captured in the *EMAVEN_VENDOR* array in the resulting ebuild
+(transformed into the correct format for use
+by the `java-mavan-pkg` eclass, which it inherits).
+
+This, in turn, allows for the construction (via the eclass) of 
+an 'on-the-fly' Maven cache during the
+ebuild's `src_prepare()` phase, sufficient to allow the rest of
+the build to proceed without needing to hit the network at all
+(necessary, if it is to run properly inside the `portage`(5) sandbox).
+
+You will almost certainly need to provide further functionality to
+the resulting ebuild, before it is ready for deployment.
+
+OPTIONS
+-------
+
+`[MVN_OPTIONS]`
+   Pass any options to `mvn2ebuild` that you normally would to your
+   (working) `mvn` clean build invocation. By default (if nothing is passed)
+   the following 'equivalent' Maven invocation will be assumed:
+   `mvn -DskipTests -Dassembly.skipAssembly=false clean package install -f pom.xml`
+   Note that `mvn2ebuild` also passes
+   `-Dos.detected.{name,os,classifier}` parameters, to ensure these
+   are set correctly.
+
+
+ALGORITHM
+---------
+
+The script works by invoking `mvn` with a temporary cache that is
+initially empty, and then recording all files downloaded, using these
+to populate the *EMAVEN_VENDOR* array in the ebuild.
+
+If invoked inside a `git`(1) repository, `mvn2ebuild` will
+automatically inherit the `git-r3` eclass in the ebuild, and
+set *EGIT_REPO_URI*, *EGIT_BRANCH* and *EGIT_COMMIT* appropriately.
+
+
+BUGS
+----
+
+This is a very simple script, so many edge cases exist that can fool
+it. For example, if you pass some build options, but omit `clean`, then
+the resulting *EMAVEN_VENDOR* may be incomplete. The parsing out of
+Maven coordinates from captured URLs is primitive and may not work
+in certain cases. No attempt to create e.g. appropriate `src_install()`
+functions for zipped assemblies (etc.) is attempted (you need to roll
+your own install in such a case, but that is not particularly difficult).
+
+
+COPYRIGHT
+---------
+
+Copyright © 2020 sakaki
+
+License GPLv3+ (GNU GPL version 3 or later)
+<http://gnu.org/licenses/gpl.html>
+
+This is free software, you are free to change and redistribute it.
+There is NO WARRANTY, to the extent permitted by law.
+
+
+AUTHOR
+------
+
+sakaki — send bug reports or comments to <[email protected]>
+
+
+SEE ALSO
+--------
+
+`ebuild`(5), `git`(1), `portage`(5)