diff --git a/recipes-core/dropbear/dropbear/0001-urandom-xauth-changes-to-options.h.patch b/recipes-core/dropbear/dropbear/0001-urandom-xauth-changes-to-options.h.patch new file mode 100644 index 0000000..99adcfd --- /dev/null +++ b/recipes-core/dropbear/dropbear/0001-urandom-xauth-changes-to-options.h.patch @@ -0,0 +1,23 @@ +Subject: [PATCH 1/6] urandom-xauth-changes-to-options.h + +Upstream-Status: Inappropriate [configuration] +--- + default_options.h | 2 +- + 1 file changed, 1 insertion(+), 1 deletion(-) + +diff --git a/default_options.h b/default_options.h +index 349338c..5ffac25 100644 +--- a/default_options.h ++++ b/default_options.h +@@ -289,7 +289,7 @@ group1 in Dropbear server too */ + + /* The command to invoke for xauth when using X11 forwarding. + * "-q" for quiet */ +-#define XAUTH_COMMAND "/usr/bin/xauth -q" ++#define XAUTH_COMMAND "xauth -q" + + + /* If you want to enable running an sftp server (such as the one included with +-- +2.25.1 + diff --git a/recipes-core/dropbear/dropbear/0005-dropbear-enable-pam.patch b/recipes-core/dropbear/dropbear/0005-dropbear-enable-pam.patch new file mode 100644 index 0000000..32c3ea5 --- /dev/null +++ b/recipes-core/dropbear/dropbear/0005-dropbear-enable-pam.patch @@ -0,0 +1,41 @@ +From b8cece92ba19aa77ac013ea161bfe4c7147747c9 Mon Sep 17 00:00:00 2001 +From: Jussi Kukkonen +Date: Wed, 2 Dec 2015 11:36:02 +0200 +Subject: Enable pam + +We need modify file default_options.h besides enabling pam in +configure if we want dropbear to support pam. + +Upstream-Status: Pending + +Signed-off-by: Xiaofeng Yan +Signed-off-by: Jussi Kukkonen +--- + default_options.h | 4 ++-- + 1 file changed, 2 insertions(+), 2 deletions(-) + +diff --git a/default_options.h b/default_options.h +index 0e3d027..349338c 100644 +--- a/default_options.h ++++ b/default_options.h +@@ -210,7 +210,7 @@ group1 in Dropbear server too */ + + /* Authentication Types - at least one required. + RFC Draft requires pubkey auth, and recommends password */ +-#define DROPBEAR_SVR_PASSWORD_AUTH 1 ++#define DROPBEAR_SVR_PASSWORD_AUTH 0 + + /* Note: PAM auth is quite simple and only works for PAM modules which just do + * a simple "Login: " "Password: " (you can edit the strings in svr-authpam.c). +@@ -218,7 +218,7 @@ group1 in Dropbear server too */ + * but there's an interface via a PAM module. It won't work for more complex + * PAM challenge/response. + * You can't enable both PASSWORD and PAM. */ +-#define DROPBEAR_SVR_PAM_AUTH 0 ++#define DROPBEAR_SVR_PAM_AUTH 1 + + /* ~/.ssh/authorized_keys authentication. + * You must define DROPBEAR_SVR_PUBKEY_AUTH in order to use plugins. */ +-- +2.25.1 + diff --git a/recipes-core/dropbear/dropbear/0006-dropbear-configuration-file.patch b/recipes-core/dropbear/dropbear/0006-dropbear-configuration-file.patch new file mode 100644 index 0000000..deed78f --- /dev/null +++ b/recipes-core/dropbear/dropbear/0006-dropbear-configuration-file.patch @@ -0,0 +1,33 @@ +From e3a5db1b6d3f6382a15b2266458c26c645a10f18 Mon Sep 17 00:00:00 2001 +From: Mingli Yu +Date: Thu, 6 Sep 2018 15:54:00 +0800 +Subject: [PATCH] dropbear configuration file + +dropbear: Change the path ("/etc/pam.d/sshd" as default) to find a pam configuration file \ +to "/etc/pam.d/dropbear for dropbear when enabling pam supporting" + +Upstream-Status: Inappropriate [configuration] + +Signed-off-by: Maxin B. John +Signed-off-by: Xiaofeng Yan +Signed-off-by: Mingli Yu +--- + svr-authpam.c | 2 +- + 1 file changed, 1 insertion(+), 1 deletion(-) + +diff --git a/svr-authpam.c b/svr-authpam.c +index d201bc9..165ec5c 100644 +--- a/svr-authpam.c ++++ b/svr-authpam.c +@@ -223,7 +223,7 @@ void svr_auth_pam(int valid_user) { + } + + /* Init pam */ +- if ((rc = pam_start("sshd", NULL, &pamConv, &pamHandlep)) != PAM_SUCCESS) { ++ if ((rc = pam_start("dropbear", NULL, &pamConv, &pamHandlep)) != PAM_SUCCESS) { + dropbear_log(LOG_WARNING, "pam_start() failed, rc=%d, %s", + rc, pam_strerror(pamHandlep, rc)); + goto cleanup; +-- +2.7.4 + diff --git a/recipes-core/dropbear/dropbear/dropbear b/recipes-core/dropbear/dropbear/dropbear new file mode 100644 index 0000000..47e787f --- /dev/null +++ b/recipes-core/dropbear/dropbear/dropbear @@ -0,0 +1,4 @@ +#%PAM-1.0 + +auth include common-auth +account include common-account diff --git a/recipes-core/dropbear/dropbear/dropbear-disable-weak-ciphers.patch b/recipes-core/dropbear/dropbear/dropbear-disable-weak-ciphers.patch new file mode 100644 index 0000000..5c60868 --- /dev/null +++ b/recipes-core/dropbear/dropbear/dropbear-disable-weak-ciphers.patch @@ -0,0 +1,31 @@ +From c347ece05a7fdbf50d76cb136b9ed45caed333f6 Mon Sep 17 00:00:00 2001 +From: Joseph Reynolds +Date: Thu, 20 Jun 2019 16:29:15 -0500 +Subject: [PATCH] dropbear: new feature: disable-weak-ciphers + +This feature disables all CBC, SHA1, and diffie-hellman group1 ciphers +in the dropbear ssh server and client since they're considered weak ciphers +and we want to support the stong algorithms. + +Upstream-Status: Inappropriate [configuration] +Signed-off-by: Joseph Reynolds +--- + default_options.h | 2 +- + 1 file changed, 1 insertion(+), 1 deletion(-) + +diff --git a/default_options.h b/default_options.h +index d417588..bc5200f 100644 +--- a/default_options.h ++++ b/default_options.h +@@ -180,7 +180,7 @@ IMPORTANT: Some options will require "make clean" after changes */ + * Small systems should generally include either curve25519 or ecdh for performance. + * curve25519 is less widely supported but is faster + */ +-#define DROPBEAR_DH_GROUP14_SHA1 1 ++#define DROPBEAR_DH_GROUP14_SHA1 0 + #define DROPBEAR_DH_GROUP14_SHA256 1 + #define DROPBEAR_DH_GROUP16 0 + #define DROPBEAR_CURVE25519 1 +-- +2.25.1 + diff --git a/recipes-core/dropbear/dropbear/dropbear.default b/recipes-core/dropbear/dropbear/dropbear.default new file mode 100644 index 0000000..522453a --- /dev/null +++ b/recipes-core/dropbear/dropbear/dropbear.default @@ -0,0 +1,2 @@ +# Disallow root logins by default +DROPBEAR_EXTRA_ARGS="-w" diff --git a/recipes-core/dropbear/dropbear/dropbear.socket b/recipes-core/dropbear/dropbear/dropbear.socket new file mode 100644 index 0000000..e5c61b7 --- /dev/null +++ b/recipes-core/dropbear/dropbear/dropbear.socket @@ -0,0 +1,10 @@ +[Unit] +Conflicts=dropbear.service + +[Socket] +ListenStream=22 +Accept=yes + +[Install] +WantedBy=sockets.target +Also=dropbearkey.service diff --git a/recipes-core/dropbear/dropbear/dropbear@.service b/recipes-core/dropbear/dropbear/dropbear@.service new file mode 100644 index 0000000..b420bcd --- /dev/null +++ b/recipes-core/dropbear/dropbear/dropbear@.service @@ -0,0 +1,12 @@ +[Unit] +Description=SSH Per-Connection Server +Wants=dropbearkey.service +After=syslog.target dropbearkey.service + +[Service] +Environment="DROPBEAR_RSAKEY_DIR=/etc/dropbear" +EnvironmentFile=-/etc/default/dropbear +ExecStart=-@SBINDIR@/dropbear -i -r ${DROPBEAR_RSAKEY_DIR}/dropbear_rsa_host_key $DROPBEAR_EXTRA_ARGS +ExecReload=@BASE_BINDIR@/kill -HUP $MAINPID +StandardInput=socket +KillMode=process diff --git a/recipes-core/dropbear/dropbear/dropbearkey.service b/recipes-core/dropbear/dropbear/dropbearkey.service new file mode 100644 index 0000000..71a12a6 --- /dev/null +++ b/recipes-core/dropbear/dropbear/dropbearkey.service @@ -0,0 +1,14 @@ +[Unit] +Description=SSH Key Generation +RequiresMountsFor=/var /var/lib +ConditionPathExists=!/etc/dropbear/dropbear_rsa_host_key +ConditionPathExists=!/var/lib/dropbear/dropbear_rsa_host_key + +[Service] +Environment="DROPBEAR_RSAKEY_DIR=/etc/dropbear" +EnvironmentFile=-/etc/default/dropbear +Type=oneshot +ExecStart=@BASE_BINDIR@/mkdir -p ${DROPBEAR_RSAKEY_DIR} +ExecStart=@SBINDIR@/dropbearkey -t rsa -f ${DROPBEAR_RSAKEY_DIR}/dropbear_rsa_host_key +RemainAfterExit=yes +Nice=10 diff --git a/recipes-core/dropbear/dropbear/init b/recipes-core/dropbear/dropbear/init new file mode 100755 index 0000000..ffab7a2 --- /dev/null +++ b/recipes-core/dropbear/dropbear/init @@ -0,0 +1,79 @@ +#!/bin/sh +### BEGIN INIT INFO +# Provides: sshd +# Required-Start: $remote_fs $syslog $networking +# Required-Stop: $remote_fs $syslog +# Default-Start: 2 3 4 5 +# Default-Stop: 1 +# Short-Description: Dropbear Secure Shell server +### END INIT INFO +# +# Do not configure this file. Edit /etc/default/dropbear instead! +# + +PATH=/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin +DAEMON=/usr/sbin/dropbear +NAME=dropbear +DESC="Dropbear SSH server" +PIDFILE=/var/run/dropbear.pid + +# These values may be replaced by those from /etc/default/dropbear +DROPBEAR_RSAKEY_DIR="/etc/dropbear" +DROPBEAR_PORT=22 +DROPBEAR_EXTRA_ARGS= +DROPBEAR_RSAKEY_ARGS= +NO_START=0 + +set -e + +test ! -r /etc/default/dropbear || . /etc/default/dropbear +test "$NO_START" = "0" || exit 0 +test -x "$DAEMON" || exit 0 +test ! -h /var/service/dropbear || exit 0 + +test -z "$DROPBEAR_BANNER" || \ + DROPBEAR_EXTRA_ARGS="$DROPBEAR_EXTRA_ARGS -b $DROPBEAR_BANNER" +test -n "$DROPBEAR_RSAKEY" || \ + DROPBEAR_RSAKEY="${DROPBEAR_RSAKEY_DIR}/dropbear_rsa_host_key" + +gen_keys() { + if [ -f "$DROPBEAR_RSAKEY" -a ! -s "$DROPBEAR_RSAKEY" ]; then + rm $DROPBEAR_RSAKEY || true + fi + if [ ! -f "$DROPBEAR_RSAKEY" ]; then + mkdir -p ${DROPBEAR_RSAKEY%/*} + dropbearkey -t rsa -f $DROPBEAR_RSAKEY $DROPBEAR_RSAKEY_ARGS + fi +} + +case "$1" in + start) + echo -n "Starting $DESC: " + gen_keys + start-stop-daemon -S -p $PIDFILE \ + -x "$DAEMON" -- -r $DROPBEAR_RSAKEY \ + -p "$DROPBEAR_PORT" $DROPBEAR_EXTRA_ARGS + echo "$NAME." + ;; + stop) + echo -n "Stopping $DESC: " + start-stop-daemon -K -x "$DAEMON" -p $PIDFILE + echo "$NAME." + ;; + restart|force-reload) + echo -n "Restarting $DESC: " + start-stop-daemon -K -x "$DAEMON" -p $PIDFILE + sleep 1 + start-stop-daemon -S -p $PIDFILE \ + -x "$DAEMON" -- -r $DROPBEAR_RSAKEY \ + -p "$DROPBEAR_PORT" $DROPBEAR_EXTRA_ARGS + echo "$NAME." + ;; + *) + N=/etc/init.d/$NAME + echo "Usage: $N {start|stop|restart|force-reload}" >&2 + exit 1 + ;; +esac + +exit 0 diff --git a/recipes-core/dropbear/dropbear_2022.83.bb b/recipes-core/dropbear/dropbear_2022.83.bb new file mode 100644 index 0000000..0c7a8f4 --- /dev/null +++ b/recipes-core/dropbear/dropbear_2022.83.bb @@ -0,0 +1,133 @@ +SUMMARY = "A lightweight SSH and SCP implementation" +HOMEPAGE = "http://matt.ucc.asn.au/dropbear/dropbear.html" +DESCRIPTION = "Dropbear is a relatively small SSH server and client. It runs on a variety of POSIX-based platforms. Dropbear is open source software, distributed under a MIT-style license. Dropbear is particularly useful for "embedded"-type Linux (or other Unix) systems, such as wireless routers." +SECTION = "console/network" + +# some files are from other projects and have others license terms: +# public domain, OpenSSH 3.5p1, OpenSSH3.6.1p2, PuTTY +LICENSE = "MIT & BSD-3-Clause & BSD-2-Clause & PD" +LIC_FILES_CHKSUM = "file://LICENSE;md5=25cf44512b7bc8966a48b6b1a9b7605f" + +DEPENDS = "zlib virtual/crypt" +RPROVIDES:${PN} = "ssh sshd" +RCONFLICTS:${PN} = "openssh-sshd openssh" + +SRC_URI = "http://matt.ucc.asn.au/dropbear/releases/dropbear-${PV}.tar.bz2 \ + file://0001-urandom-xauth-changes-to-options.h.patch \ + file://init \ + file://dropbearkey.service \ + file://dropbear@.service \ + file://dropbear.socket \ + file://dropbear.default \ + ${@bb.utils.contains('DISTRO_FEATURES', 'pam', '${PAM_SRC_URI}', '', d)} \ + ${@bb.utils.contains('PACKAGECONFIG', 'disable-weak-ciphers', 'file://dropbear-disable-weak-ciphers.patch', '', d)} \ + " + +SRC_URI[sha256sum] = "bc5a121ffbc94b5171ad5ebe01be42746d50aa797c9549a4639894a16749443b" + +PAM_SRC_URI = "file://0005-dropbear-enable-pam.patch \ + file://0006-dropbear-configuration-file.patch \ + file://dropbear" + +PAM_PLUGINS = "libpam-runtime \ + pam-plugin-deny \ + pam-plugin-permit \ + pam-plugin-unix \ + " +inherit autotools update-rc.d systemd + +CVE_PRODUCT = "dropbear_ssh" + +INITSCRIPT_NAME = "dropbear" +INITSCRIPT_PARAMS = "defaults 10" + +SYSTEMD_SERVICE:${PN} = "dropbear.socket" + +SBINCOMMANDS = "dropbear dropbearkey dropbearconvert" +BINCOMMANDS = "dbclient ssh scp" +EXTRA_OEMAKE = 'MULTI=1 SCPPROGRESS=1 PROGRAMS="${SBINCOMMANDS} ${BINCOMMANDS}"' + +PACKAGECONFIG ?= "disable-weak-ciphers ${@bb.utils.filter('DISTRO_FEATURES', 'pam', d)}" +PACKAGECONFIG[pam] = "--enable-pam,--disable-pam,libpam,${PAM_PLUGINS}" +PACKAGECONFIG[system-libtom] = "--disable-bundled-libtom,--enable-bundled-libtom,libtommath libtomcrypt" +PACKAGECONFIG[disable-weak-ciphers] = "" +PACKAGECONFIG[enable-x11-forwarding] = "" + +# This option appends to CFLAGS and LDFLAGS from OE +# This is causing [textrel] QA warning +EXTRA_OECONF += "--disable-harden" + +# musl does not implement wtmp/logwtmp APIs +EXTRA_OECONF:append:libc-musl = " --disable-wtmp --disable-lastlog" + +do_configure:append() { + echo "/* Dropbear features */" > ${B}/localoptions.h + if ${@bb.utils.contains('PACKAGECONFIG', 'enable-x11-forwarding', 'true', 'false', d)}; then + echo "#define DROPBEAR_X11FWD 1" >> ${B}/localoptions.h + fi +} + +do_install() { + install -d ${D}${sysconfdir} \ + ${D}${sysconfdir}/init.d \ + ${D}${sysconfdir}/default \ + ${D}${sysconfdir}/dropbear \ + ${D}${bindir} \ + ${D}${sbindir} \ + ${D}${localstatedir} + + install -m 0644 ${WORKDIR}/dropbear.default ${D}${sysconfdir}/default/dropbear + + install -m 0755 dropbearmulti ${D}${sbindir}/ + + for i in ${BINCOMMANDS} + do + # ssh and scp symlinks are created by update-alternatives + if [ $i = ssh ] || [ $i = scp ]; then continue; fi + ln -s ${sbindir}/dropbearmulti ${D}${bindir}/$i + done + for i in ${SBINCOMMANDS} + do + ln -s ./dropbearmulti ${D}${sbindir}/$i + done + sed -e 's,/etc,${sysconfdir},g' \ + -e 's,/usr/sbin,${sbindir},g' \ + -e 's,/var,${localstatedir},g' \ + -e 's,/usr/bin,${bindir},g' \ + -e 's,/usr,${prefix},g' ${WORKDIR}/init > ${D}${sysconfdir}/init.d/dropbear + chmod 755 ${D}${sysconfdir}/init.d/dropbear + if [ "${@bb.utils.filter('DISTRO_FEATURES', 'pam', d)}" ]; then + install -d ${D}${sysconfdir}/pam.d + install -m 0644 ${WORKDIR}/dropbear ${D}${sysconfdir}/pam.d/ + fi + + # deal with systemd unit files + install -d ${D}${systemd_system_unitdir} + install -m 0644 ${WORKDIR}/dropbearkey.service ${D}${systemd_system_unitdir} + install -m 0644 ${WORKDIR}/dropbear@.service ${D}${systemd_system_unitdir} + install -m 0644 ${WORKDIR}/dropbear.socket ${D}${systemd_system_unitdir} + sed -i -e 's,@BASE_BINDIR@,${base_bindir},g' \ + -e 's,@BINDIR@,${bindir},g' \ + -e 's,@SBINDIR@,${sbindir},g' \ + ${D}${systemd_system_unitdir}/dropbear.socket ${D}${systemd_system_unitdir}/*.service +} + +inherit update-alternatives + +ALTERNATIVE_PRIORITY = "20" +ALTERNATIVE:${PN} = "${@bb.utils.filter('BINCOMMANDS', 'scp ssh', d)}" + +ALTERNATIVE_TARGET = "${sbindir}/dropbearmulti" + +pkg_postrm:${PN} () { + if [ -f "${sysconfdir}/dropbear/dropbear_rsa_host_key" ]; then + rm ${sysconfdir}/dropbear/dropbear_rsa_host_key + fi + if [ -f "${sysconfdir}/dropbear/dropbear_dss_host_key" ]; then + rm ${sysconfdir}/dropbear/dropbear_dss_host_key + fi +} + +CONFFILES:${PN} = "${sysconfdir}/default/dropbear" + +FILES:${PN} += "${bindir}"