package/opendoas: new package

OpenDoas: a portable version of OpenBSD's doas command.
doas is a minimal replacement for the venerable sudo.

https://github.com/Duncaen/OpenDoas

Signed-off-by: Francois Perrad <francois.perrad@gadz.org>
[Julien:
 - add package description in commit log
 - add comments justifying the generic-package infra
 - add missing dependency on host-bison
]
Signed-off-by: Julien Olivain <ju.o@free.fr>

DEVELOPERS

@@ -1205,6 +1205,7 @@ F:	package/lua*
 F:	package/lynis/
 F:	package/lzlib/
 F:	package/moarvm/
+F:	package/opendoas/
 F:	package/perl*
 F:	package/pkg-perl.mk
 F:	package/pkg-luarocks.mk

package/Config.in

@@ -2747,6 +2747,7 @@ comment "Utilities"
 	source "package/lowdown/Config.in"
 	source "package/minisign/Config.in"
 	source "package/neofetch/Config.in"
+	source "package/opendoas/Config.in"
 	source "package/pdmenu/Config.in"
 	source "package/pinentry/Config.in"
 	source "package/qprint/Config.in"

package/opendoas/Config.in

@@ -0,0 +1,9 @@
+config BR2_PACKAGE_OPENDOAS
+	bool "opendoas"
+	depends on BR2_USE_MMU # fork()
+	select BR2_PACKAGE_LIBXCRYPT if BR2_TOOLCHAIN_USES_GLIBC
+	help
+	  OpenDoas: a portable version of OpenBSD's doas command.
+	  doas is a minimal replacement for the venerable sudo.
+
+	  https://github.com/Duncaen/OpenDoas

package/opendoas/opendoas.hash

@@ -0,0 +1,3 @@
+# Locally computed
+sha256  6da058a0e70b7543bc60624389b0b00b686189ec933828c522bf8b2600495a67  opendoas-6.8.2.tar.gz
+sha256  293e7f2bc3a06396b200956cd660cd101bdb3c109f31c9ab6f2547f2105b38af  LICENSE

package/opendoas/opendoas.mk

@@ -0,0 +1,60 @@
+################################################################################
+#
+# opendoas
+#
+################################################################################
+
+OPENDOAS_VERSION = 6.8.2
+OPENDOAS_SITE = $(call github,Duncaen,OpenDoas,v$(OPENDOAS_VERSION))
+OPENDOAS_LICENSE = ISC
+OPENDOAS_LICENSE_FILES = LICENSE
+
+OPENDOAS_DEPENDENCIES = host-bison
+
+# Those options looks like autotools ones, but this package has a
+# handwritten "configure" script that mimic a subset of autotools.
+# This is why this package uses the generic-package infra. See:
+# https://github.com/Duncaen/OpenDoas/blob/v6.8.2/configure
+OPENDOAS_CONF_OPTS = \
+	--target=$(GNU_TARGET_NAME) \
+	--host=$(GNU_TARGET_NAME) \
+	--build=$(GNU_HOST_NAME) \
+	--prefix=/usr \
+	--sysconfdir=/etc \
+	--with-shadow
+
+ifeq ($(BR2_PACKAGE_LIBXCRYPT),y)
+OPENDOAS_DEPENDENCIES += libxcrypt
+endif
+
+ifeq ($(BR2_PACKAGE_LINUX_PAM),y)
+define OPENDOAS_INSTALL_PAM_CONF
+	$(INSTALL) -D -m 0644 $(@D)/pam.d__doas__linux $(TARGET_DIR)/etc/pam.d/doas
+endef
+
+OPENDOAS_DEPENDENCIES += linux-pam
+OPENDOAS_CONF_OPTS += --with-pam
+else
+OPENDOAS_CONF_OPTS += --without-pam
+endif
+
+define OPENDOAS_CONFIGURE_CMDS
+	(cd $(@D) && \
+	$(TARGET_CONFIGURE_OPTS) ./configure $(OPENDOAS_CONF_OPTS))
+endef
+
+define OPENDOAS_BUILD_CMDS
+	$(TARGET_MAKE_ENV) $(MAKE) -C $(@D) \
+		CC="$(TARGET_CC)" \
+		YACC="$(HOST_DIR)/bin/bison -y"
+endef
+
+define OPENDOAS_INSTALL_TARGET_CMDS
+	$(INSTALL) -D -m 0755 $(@D)/doas $(TARGET_DIR)/usr/bin/doas
+	$(OPENDOAS_INSTALL_PAM_CONF)
+endef
+
+# NOTE: Even though this package has a "configure" script, it is not
+# generated using autotools, so we have to use the generic package
+# infrastructure.
+$(eval $(generic-package))