################################################################################
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#
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# dropbear
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#
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################################################################################
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DROPBEAR_VERSION = 2019.78
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DROPBEAR_SITE = https://matt.ucc.asn.au/dropbear/releases
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DROPBEAR_SOURCE = dropbear-$(DROPBEAR_VERSION).tar.bz2
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DROPBEAR_LICENSE = MIT, BSD-2-Clause, BSD-3-Clause
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DROPBEAR_LICENSE_FILES = LICENSE
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DROPBEAR_TARGET_BINS = dropbearkey dropbearconvert scp
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DROPBEAR_PROGRAMS = dropbear $(DROPBEAR_TARGET_BINS)
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# Disable hardening flags added by dropbear configure.ac, and let
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# Buildroot add them when the relevant options are enabled. This
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# prevents dropbear from using SSP support when not available.
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DROPBEAR_CONF_OPTS = --disable-harden
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ifeq ($(BR2_PACKAGE_DROPBEAR_CLIENT),y)
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# Build dbclient, and create a convenience symlink named ssh
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DROPBEAR_PROGRAMS += dbclient
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DROPBEAR_TARGET_BINS += dbclient ssh
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endif
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DROPBEAR_MAKE = \
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$(MAKE) MULTI=1 SCPPROGRESS=1 \
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PROGRAMS="$(DROPBEAR_PROGRAMS)"
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# With BR2_SHARED_STATIC_LIBS=y the generic infrastructure adds a
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# --enable-static flags causing dropbear to be built as a static
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# binary. Adding a --disable-static reverts this
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ifeq ($(BR2_SHARED_STATIC_LIBS),y)
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DROPBEAR_CONF_OPTS += --disable-static
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endif
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ifeq ($(BR2_PACKAGE_LINUX_PAM),y)
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define DROPBEAR_SVR_PAM_AUTH
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echo '#define DROPBEAR_SVR_PASSWORD_AUTH 0' >> $(@D)/localoptions.h
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echo '#define DROPBEAR_SVR_PAM_AUTH 1' >> $(@D)/localoptions.h
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endef
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define DROPBEAR_INSTALL_PAM_CONF
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$(INSTALL) -D -m 644 package/dropbear/etc-pam.d-sshd $(TARGET_DIR)/etc/pam.d/sshd
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endef
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DROPBEAR_DEPENDENCIES += linux-pam
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DROPBEAR_CONF_OPTS += --enable-pam
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DROPBEAR_POST_EXTRACT_HOOKS += DROPBEAR_SVR_PAM_AUTH
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DROPBEAR_POST_INSTALL_TARGET_HOOKS += DROPBEAR_INSTALL_PAM_CONF
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else
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# Ensure that dropbear doesn't use crypt() when it's not available
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define DROPBEAR_SVR_PASSWORD_AUTH
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echo '#if !HAVE_CRYPT' >> $(@D)/localoptions.h
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echo '#define DROPBEAR_SVR_PASSWORD_AUTH 0' >> $(@D)/localoptions.h
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echo '#endif' >> $(@D)/localoptions.h
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endef
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DROPBEAR_POST_EXTRACT_HOOKS += DROPBEAR_SVR_PASSWORD_AUTH
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endif
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define DROPBEAR_DISABLE_LEGACY_CRYPTO
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echo '#define DROPBEAR_3DES 0' >> $(@D)/localoptions.h
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echo '#define DROPBEAR_ENABLE_CBC_MODE 0' >> $(@D)/localoptions.h
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echo '#define DROPBEAR_SHA1_96_HMAC 0' >> $(@D)/localoptions.h
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echo '#define DROPBEAR_DSS 0' >> $(@D)/localoptions.h
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echo '#define DROPBEAR_DH_GROUP1 0' >> $(@D)/localoptions.h
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endef
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ifneq ($(BR2_PACKAGE_DROPBEAR_LEGACY_CRYPTO),y)
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DROPBEAR_POST_EXTRACT_HOOKS += DROPBEAR_DISABLE_LEGACY_CRYPTO
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endif
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define DROPBEAR_ENABLE_REVERSE_DNS
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echo '#define DO_HOST_LOOKUP 1' >> $(@D)/localoptions.h
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endef
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define DROPBEAR_BUILD_FEATURED
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echo '#define DROPBEAR_SMALL_CODE 0' >> $(@D)/localoptions.h
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echo '#define DROPBEAR_TWOFISH128 1' >> $(@D)/localoptions.h
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echo '#define DROPBEAR_TWOFISH256 1' >> $(@D)/localoptions.h
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endef
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define DROPBEAR_DISABLE_STANDALONE
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echo '#define NON_INETD_MODE 0' >> $(@D)/localoptions.h
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endef
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define DROPBEAR_CUSTOM_PATH
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echo '#define DEFAULT_PATH $(BR2_SYSTEM_DEFAULT_PATH)' >>$(@D)/localoptions.h
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endef
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DROPBEAR_POST_EXTRACT_HOOKS += DROPBEAR_CUSTOM_PATH
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define DROPBEAR_INSTALL_INIT_SYSTEMD
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$(INSTALL) -D -m 644 package/dropbear/dropbear.service \
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$(TARGET_DIR)/usr/lib/systemd/system/dropbear.service
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endef
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ifeq ($(BR2_USE_MMU),y)
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define DROPBEAR_INSTALL_INIT_SYSV
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$(INSTALL) -D -m 755 package/dropbear/S50dropbear \
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$(TARGET_DIR)/etc/init.d/S50dropbear
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endef
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else
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DROPBEAR_POST_EXTRACT_HOOKS += DROPBEAR_DISABLE_STANDALONE
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endif
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ifeq ($(BR2_PACKAGE_DROPBEAR_DISABLE_REVERSEDNS),)
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DROPBEAR_POST_EXTRACT_HOOKS += DROPBEAR_ENABLE_REVERSE_DNS
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endif
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ifeq ($(BR2_PACKAGE_DROPBEAR_SMALL),y)
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DROPBEAR_CONF_OPTS += --disable-zlib --enable-bundled-libtom
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else
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DROPBEAR_POST_EXTRACT_HOOKS += DROPBEAR_BUILD_FEATURED
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DROPBEAR_DEPENDENCIES += zlib libtomcrypt
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DROPBEAR_CONF_OPTS += --disable-bundled-libtom
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endif
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ifneq ($(BR2_PACKAGE_DROPBEAR_WTMP),y)
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DROPBEAR_CONF_OPTS += --disable-wtmp
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endif
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ifneq ($(BR2_PACKAGE_DROPBEAR_LASTLOG),y)
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DROPBEAR_CONF_OPTS += --disable-lastlog
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endif
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DROPBEAR_LOCALOPTIONS_FILE = $(call qstrip,$(BR2_PACKAGE_DROPBEAR_LOCALOPTIONS_FILE))
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ifneq ($(DROPBEAR_LOCALOPTIONS_FILE),)
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define DROPBEAR_APPEND_LOCALOPTIONS_FILE
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cat $(DROPBEAR_LOCALOPTIONS_FILE) >> $(@D)/localoptions.h
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endef
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DROPBEAR_POST_EXTRACT_HOOKS += DROPBEAR_APPEND_LOCALOPTIONS_FILE
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endif
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define DROPBEAR_INSTALL_TARGET_CMDS
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$(INSTALL) -m 755 $(@D)/dropbearmulti $(TARGET_DIR)/usr/sbin/dropbear
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for f in $(DROPBEAR_TARGET_BINS); do \
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ln -snf ../sbin/dropbear $(TARGET_DIR)/usr/bin/$$f ; \
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done
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ln -snf /var/run/dropbear $(TARGET_DIR)/etc/dropbear
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endef
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$(eval $(autotools-package))
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