dropbear: added 0.47

Note from upstream author about 0.47 and fix for older:
 This release also fixes a potential security issue, which may allow
 authenticated users to run arbitrary code as the server user. I'm unsure
 exactly how likely it is to be exploitable, but anyone who's running a
 multi-user server is advised to upgrade.

6 files changed, 167 insertions, 0 deletions

diff --git a/packages/dropbear/dropbear-0.47/.mtn2git_empty b/packages/dropbear/dropbear-0.47/.mtn2git_empty
new file mode 100644
index 0000000000..e69de29bb2
--- /dev/null
+++ b/packages/dropbear/dropbear-0.47/.mtn2git_empty
diff --git a/packages/dropbear/dropbear-0.47/allow-nopw.patch b/packages/dropbear/dropbear-0.47/allow-nopw.patch
new file mode 100644
index 0000000000..1a709b8da0
--- /dev/null
+++ b/packages/dropbear/dropbear-0.47/allow-nopw.patch
@@ -0,0 +1,37 @@
+diff -Nurd dropbear-0.45/svr-auth.c dropbear-0.45.patched/svr-auth.c
+--- dropbear-0.45/svr-auth.c	2005-03-06 20:27:02.000000000 -0800
++++ dropbear-0.45.patched/svr-auth.c	2005-03-08 15:22:43.998592744 -0800
+@@ -237,6 +237,7 @@
+ 	}
+ 
+ 	/* check for an empty password */
++#ifdef DISALLOW_EMPTY_PW
+ 	if (ses.authstate.pw->pw_passwd[0] == '\0') {
+ 		TRACE(("leave checkusername: empty pword"))
+ 		dropbear_log(LOG_WARNING, "user '%s' has blank password, rejected",
+@@ -244,7 +245,7 @@
+ 		send_msg_userauth_failure(0, 1);
+ 		return DROPBEAR_FAILURE;
+ 	}
+-
++#endif
+ 	TRACE(("shell is %s", ses.authstate.pw->pw_shell))
+ 
+ 	/* check that the shell is set */
+diff -Nurd dropbear-0.45/svr-authpasswd.c dropbear-0.45.patched/svr-authpasswd.c
+--- dropbear-0.45/svr-authpasswd.c	2005-03-06 20:27:02.000000000 -0800
++++ dropbear-0.45.patched/svr-authpasswd.c	2005-03-08 15:22:44.010591023 -0800
+@@ -64,9 +64,13 @@
+ 	 * since the shadow password may differ to that tested
+ 	 * in auth.c */
+ 	if (passwdcrypt[0] == '\0') {
++#ifdef DISALLOW_EMPTY_PASSWD
+ 		dropbear_log(LOG_WARNING, "user '%s' has blank password, rejected",
+ 				ses.authstate.printableuser);
+ 		send_msg_userauth_failure(0, 1);
++#else
++		send_msg_userauth_success();
++#endif
+ 		return;
+ 	}
+ 
diff --git a/packages/dropbear/dropbear-0.47/configure.patch b/packages/dropbear/dropbear-0.47/configure.patch
new file mode 100644
index 0000000000..9ae84b2604
--- /dev/null
+++ b/packages/dropbear/dropbear-0.47/configure.patch
@@ -0,0 +1,27 @@
+diff -Nurd dropbear-0.45/configure.in dropbear-0.45.patched/configure.in
+--- dropbear-0.45/configure.in	2005-03-06 20:27:02.000000000 -0800
++++ dropbear-0.45.patched/configure.in	2005-03-08 15:22:44.040586721 -0800
+@@ -161,15 +161,20 @@
+ 			AC_MSG_RESULT(Not using openpty)
+ 		else
+ 			AC_MSG_RESULT(Using openpty if available)
+-			AC_SEARCH_LIBS(openpty, util, [AC_DEFINE(HAVE_OPENPTY,,Have openpty() function)])
++			AC_SEARCH_LIBS(openpty, util, [dropbear_cv_func_have_openpty=yes])
+ 		fi
+ 	],
+ 	[
+ 		AC_MSG_RESULT(Using openpty if available)
+-		AC_SEARCH_LIBS(openpty, util, [AC_DEFINE(HAVE_OPENPTY)])
++		AC_SEARCH_LIBS(openpty, util, [dropbear_cv_func_have_openpty=yes])
+ 	]
+ )
+-		
++
++if test "x$dropbear_cv_func_have_openpty" = "xyes"; then
++	AC_DEFINE(HAVE_OPENPTY,,Have openpty() function)
++	no_ptc_check=yes
++	no_ptmx_check=yes
++fi
+ 
+ AC_ARG_ENABLE(syslog,
+ 	[  --disable-syslog        Don't include syslog support],
diff --git a/packages/dropbear/dropbear-0.47/fix-2kb-keys.patch b/packages/dropbear/dropbear-0.47/fix-2kb-keys.patch
new file mode 100644
index 0000000000..ba2b19d44a
--- /dev/null
+++ b/packages/dropbear/dropbear-0.47/fix-2kb-keys.patch
@@ -0,0 +1,11 @@
+diff -Nurd dropbear-0.45/kex.h dropbear-0.45.patched/kex.h
+--- dropbear-0.45/kex.h	2005-03-06 20:27:02.000000000 -0800
++++ dropbear-0.45.patched/kex.h	2005-03-08 15:22:44.064583279 -0800
+@@ -64,6 +64,6 @@
+ 
+ };
+ 
+-#define MAX_KEXHASHBUF 2000
++#define MAX_KEXHASHBUF 3000
+ 
+ #endif /* _KEX_H_ */
diff --git a/packages/dropbear/dropbear-0.47/urandom-xauth-changes-to-options.h.patch b/packages/dropbear/dropbear-0.47/urandom-xauth-changes-to-options.h.patch
new file mode 100644
index 0000000000..e2b1dd5da5
--- /dev/null
+++ b/packages/dropbear/dropbear-0.47/urandom-xauth-changes-to-options.h.patch
@@ -0,0 +1,21 @@
+diff -Nurd dropbear-0.45/options.h dropbear-0.45.patched/options.h
+--- dropbear-0.45/options.h	2005-03-06 20:27:02.000000000 -0800
++++ dropbear-0.45.patched/options.h	2005-03-08 15:25:09.368742090 -0800
+@@ -143,7 +143,7 @@
+  * however significantly reduce the security of your ssh connections
+  * if the PRNG state becomes guessable - make sure you know what you are
+  * doing if you change this. */
+-#define DROPBEAR_RANDOM_DEV "/dev/random"
++#define DROPBEAR_RANDOM_DEV "/dev/urandom"
+ 
+ /* prngd must be manually set up to produce output */
+ /*#define DROPBEAR_PRNGD_SOCKET "/var/run/dropbear-rng"*/
+@@ -167,7 +167,7 @@
+ /* The command to invoke for xauth when using X11 forwarding.
+  * "-q" for quiet */
+ #ifndef XAUTH_COMMAND
+-#define XAUTH_COMMAND "/usr/X11R6/bin/xauth -q"
++#define XAUTH_COMMAND "xauth -q"
+ #endif
+ 
+ /* if you want to enable running an sftp server (such as the one included with
diff --git a/packages/dropbear/dropbear_0.47.bb b/packages/dropbear/dropbear_0.47.bb
new file mode 100644
index 0000000000..8035fb7969
--- /dev/null
+++ b/packages/dropbear/dropbear_0.47.bb
@@ -0,0 +1,71 @@
+DESCRIPTION = "Dropbear is a lightweight SSH and SCP Implementation"
+HOMEPAGE = "http://matt.ucc.asn.au/dropbear/dropbear.html"
+SECTION = "console/network"
+LICENSE = "MIT"
+DEPENDS = "zlib"
+PROVIDES = "ssh sshd"
+
+SRC_URI = "http://matt.ucc.asn.au/dropbear/releases/dropbear-${PV}.tar.bz2 \
+	   file://urandom-xauth-changes-to-options.h.patch;patch=1 \
+	   file://configure.patch;patch=1 \
+	   file://allow-nopw.patch \
+	   file://fix-2kb-keys.patch;patch=1 \
+	   file://init"
+
+inherit autotools update-rc.d
+
+INITSCRIPT_NAME = "dropbear"
+INITSCRIPT_PARAMS = "defaults 10"
+
+CFLAGS_prepend = "-I. "
+LD = "${CC}"
+
+SBINCOMMANDS = "dropbear dropbearkey dropbearconvert"
+BINCOMMANDS = "dbclient ssh scp"
+EXTRA_OEMAKE = 'MULTI=1 SCPPROGRESS=1 PROGRAMS="${SBINCOMMANDS} ${BINCOMMANDS}"'
+
+do_configure_prepend() {
+	if [ "${DISTRO_TYPE}" == "debug" ]; then
+		patch -p1 < ${WORKDIR}/allow-nopw.patch
+	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 0755 dropbearmulti ${D}${sbindir}/
+	ln -s ${sbindir}/dropbearmulti ${D}${bindir}/dbclient
+	
+	for i in ${SBINCOMMANDS}
+	do
+		ln -s ./dropbearmulti ${D}${sbindir}/$i
+	done
+	cat ${WORKDIR}/init | sed -e 's,/etc,${sysconfdir},g' \
+				  -e 's,/usr/sbin,${sbindir},g' \
+				  -e 's,/var,${localstatedir},g' \
+				  -e 's,/usr/bin,${bindir},g' \
+				  -e 's,/usr,${prefix},g' > ${D}${sysconfdir}/init.d/dropbear
+	chmod 755 ${D}${sysconfdir}/init.d/dropbear
+}
+
+pkg_postinst () {
+	update-alternatives --install ${bindir}/scp scp ${sbindir}/dropbearmulti 20
+	update-alternatives --install ${bindir}/ssh ssh ${sbindir}/dropbearmulti 20
+}
+
+pkg_postrm_append () {
+  if [ -f "${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
+  update-alternatives --remove ssh ${bindir}/dropbearmulti
+  update-alternatives --remove scp ${bindir}/dropbearmulti
+}