- Add ports license framework, from GSoc 2008/2009.

- Feel free to populate bsd.licenses.db.mk and adjust the variables:
  NO_LICENSES_INSTALL and NO_LICENSES_DIALOGS (default to off).
- For more information see http://wiki.freebsd.org/PortsLicenseInfrastructure

Reviewed by:	erwin

1 files changed, 768 insertions, 0 deletions

diff --git a/Mk/bsd.licenses.mk b/Mk/bsd.licenses.mk
new file mode 100644
index 000000000000..03af74932c58
--- /dev/null
+++ b/Mk/bsd.licenses.mk
@@ -0,0 +1,768 @@
+#-*- mode: makefile; tab-width: 4; -*-
+# ex:ts=4
+#
+# $FreeBSD$
+#
+# bsd.licenses.mk - License auditing framework.
+#
+# Created by: Alejandro Pulver <alepulver@FreeBSD.org>
+#
+# Please view me with 4 column tabs!
+#
+
+# TODO:
+# - Bring back save and checksum with new dialog interface (only offers to do
+#   so if ran by root, otherwise silently remove the options). Also only allow
+#   saving per-port options (known or unknown), and only when accepted.
+# - Add custom restriction targets for better integration (now some files are
+#   removed from FTP if restricted for CDROM for example, as the old
+#   behavior).
+
+# The following cases are not considered:
+#
+# - Redistribution of modified distfiles, because is never done.
+# - Creating binaries from modified sources, because packages almost always
+#   contain modifications to the source, can not be autodetected (i.e.
+#   patch-* in ${FILESDIR}, post-* targets, etc), and these licenses tend to
+#   have more restrictions anyways.
+#
+
+# Integration with target sequences
+#
+# _SANITY_SEQ+=		check-license (after check-vulnerable)
+# _PATCH_SEQ+=		ask-license (before any other targets)
+# _INSTALL_SUSEQ+=	install-license (after install-desktop-entries)
+#
+# The 'check-license' target will determine if the license was accepted,
+# rejected or has to be asked later to the user in 'ask-license' (by then
+# licenses should be extracted).  The 'install-license' target installs the
+# applications' licenses, a general package license mentioning them, and a
+# restriction report (to be used by ports, scripts and similar tools).
+
+# Variables provided to the ports system and users in general, to modify the
+# behavior of the framework
+#
+# NO_LICENSES_INSTALL		- Do not install catalog, report and licenses.
+# NO_LICENSES_DIALOGS		- Disable interactive menus for asking licenses.
+
+#NO_LICENSES_INSTALL=		yes
+#NO_LICENSES_DIALOGS=		yes
+
+# Variables provided to users (can be passed to make or set in /etc/make.conf)
+#
+# LICENSES_ACCEPTED	- Accepted licenses.
+# LICENSES_REJECTED	- Rejected licenses.
+# LICENSES_GROUPS_ACCEPTED	- Accepted license groups.
+# LICENSES_GROUPS_REJECTED	- Rejected license groups.
+# LICENSES_ASK		- Require explicit user approval for all licenses not
+#					  present in previous variables (for example, stock
+#					  accepted licenses will ask confirmation).
+#
+
+# Variables provided to ports
+#
+# LICENSE			- Code of license (short name).
+# LICENSE_PERMS		- Permissions; use "none" if empty.
+# LICENSE_GROUPS	- Groups the license belongs.
+# LICENSE_NAME		- Full license name (for the reports).
+# LICENSE_FILE		- Full path to license (or use LICENSE_TEXT).
+# LICENSE_TEXT		- Text to use as a license, useful when referencing to
+#					  another place if it's not in the distfile.
+# LICENSE_DISTFILES	- Name of licensed files (defaults to ${_DISTFILES}).
+# LICENSE_COMB		- Set to "dual" or "multi", for OR/AND behavior
+# 					  (defaults to "single" if undefined, the common case)
+#
+# The following cases are supported after defining LICENSE:
+#
+# Case 1: license defined in the framework (aka "known").
+#
+# In this case the only allowed variables to set are LICENSE_FILE and
+# LICENSE_DISTFILES. The rest are managed by the framework and are not allowed
+# to change.
+#
+# Case 2: license only known by the port (aka "unknown").
+#
+# In this case LICENSE_{PERMS,NAME} are mandatory, in addition to
+# either LICENSE_FILE or LICENSE_TEXT. Optional variables are
+# LICENSE_{GROUPS,NOTES}.
+#
+# Available components for LICENSE_PERMS:
+# dist-mirror	- No free redistribution of distfile (like FTP mirroring; RESTRICTED).
+# dist-sell		- No selling of distfile (like in CD-ROM; NO_CDROM).
+# pkg-mirror	- No free redistribution of package (like FTP upload; NO_PACKAGE).
+# pkg-sell		- No selling of package (like in CD-ROM; NO_CDROM).
+# auto-accept	- If license is accepted by default, without presented
+# 				  agreement, at least the user defines LICENSES_ASK.
+#
+# Notes about permissions:
+# - Permissions use a default-deny policy.
+# - Components can be negated by prefixing them with "no-" (like
+#   "no-pkg-sell").
+# - In case a component is present and also excluded (i.e. no-dist-sell and
+#   dist-sell together in LICENSE_PERMS), it will be excluded.
+# - XXX Currently there is no point in "no-" prefixes, as permissions are not
+#   inherited from groups. Maybe it looks more clear that way than leaving the
+#   variable empty?
+#
+# Dual/multiple licenses:
+#
+# If LICENSE_COMB is set to "dual", then LICENSE can (must, actually) have
+# more than one component. After that each license "lic" in LICENSE falls in
+# previous cases (known or unknown), but their variables are prefixed by
+# _LICENSE_ and suffixed by _lic. The main license name, perms and groups will
+# be set automatically (following appropiate logic). The idea is that any
+# license from LICENSE can be chosen to use the package.
+#
+# The case when LICENSE_COMB is set to "multi" is similar. But the idea is
+# that all of the licenses in LICENSE must be agreed to use the package.
+#
+
+.if defined(_POSTMKINCLUDED) && !defined(BEFOREPORTMK)
+
+.if defined(LICENSE)
+
+# Include known licenses from database
+
+.include "${PORTSDIR}/Mk/bsd.licenses.db.mk"
+
+# Lists of variables and valid components
+#
+# _LICENSE_LIST_PERMS		- Valid permission components
+# _LICENSE_LIST_PORT_VARS	- License variables defined by the port
+
+_LICENSE_LIST_PERMS=		dist-mirror dist-sell pkg-mirror pkg-sell auto-accept none
+_LICENSE_LIST_PORT_VARS=	PERMS NAME GROUPS
+
+# Path variables
+#
+# _LICENSE_DIR		- Directory to install licenses
+# _LICENSE_DIR_REL	- Same as above, without ${PREFIX}
+# _LICENSE_CATALOG	- License catalog (make include file) to be created (dst)
+# _LICENSE_CATALOG_TMP	- Same as above, but in WRKDIR (src)
+# _LICENSE_REPORT	- License summary, shows licenses and how they are combined (dst)
+# _LICENSE_REPORT_TMP	- Same as above, but in WRKDIR (src)
+# _LICENSE_COOKIE	- Set when license is accepted, it is not present in
+# 					  bsd.port.mk to avoid creating LICENSE_{REQ,SEQ} for a
+# 					  few more targets only.
+
+_LICENSE_DIR?=		${PREFIX}/share/licenses/${PKGNAME}
+_LICENSE_DIR_REL?=	share/licenses/${PKGNAME}
+_LICENSE_CATALOG?=	${_LICENSE_DIR}/catalog.mk
+_LICENSE_CATALOG_TMP?=	${WRKDIR}/.license-catalog.mk
+_LICENSE_REPORT?=	${_LICENSE_DIR}/LICENSE
+_LICENSE_REPORT_TMP?=	${WRKDIR}/.license-report
+_LICENSE_COOKIE?=	${WRKDIR}/.license_done.${PORTNAME}.${PREFIX:S/\//_/g}
+
+# Defaults (never overriden for now)
+#
+# _LICENSE			- Copy of LICENSE (for now)
+# _LICENSE_COMB		- Copy of LICENSE_COMB (but "single" instead of empty)
+
+_LICENSE?=			${LICENSE}
+.if !defined(LICENSE_COMB)
+_LICENSE_COMB=		single
+.else
+_LICENSE_COMB=		${LICENSE_COMB}
+.endif
+
+# Check if single or dual/multiple license
+#
+# Make sure LICENSE_COMB is only used with more than one license.
+
+.if ${_LICENSE_COMB} != "single" && ${_LICENSE_COMB} != "dual" && ${_LICENSE_COMB} != "multi"
+_LICENSE_ERROR?=	invalid value for LICENSE_COMB: "${_LICENSE_COMB}" (should be "single", "dual" or "multi")
+.endif
+
+.for lic in ${_LICENSE}
+.	if defined(_LICENSE_DEFINED)
+.		if ${_LICENSE_COMB} == "single"
+_LICENSE_ERROR?=	multiple licenses in LICENSE, but LICENSE_COMB is set to "single" (or undefined)
+.		else
+_LICENSE_MULTI=		yes
+.		endif
+.	else
+_LICENSE_DEFINED=	yes
+.	endif
+.endfor
+.if ${_LICENSE_COMB} != "single" && !defined(_LICENSE_MULTI)
+_LICENSE_ERROR?=	single license in LICENSE, but LICENSE_COMB is set to "${_LICENSE_COMB}" (requires more than one)
+.endif
+.if !defined(_LICENSE_DEFINED)
+_LICENSE_ERROR?=	no licenses present in LICENSE (empty string)
+.endif
+.undef _LICENSE_DEFINED
+.undef _LICENSE_MULTI
+
+# Evaluate port license groups and permissions
+#
+# Available values for _LICENSE_TYPE:
+#
+# Case 1: "known" (license info taken from internal database)
+# Case 2: "unknown" (LICENSE is not known, and info taken from port)
+#
+# Make sure required variables are defined, and remove conflicting (positive
+# and negative) duplicated components.
+
+.if ${_LICENSE_COMB} == "single"
+# Defaults to empty
+_LICENSE_GROUPS?=	#
+# Start
+.	for lic in ${_LICENSE}
+.		if ${_LICENSE_LIST:M${lic}} != ""
+# Case 1: license defined in the framework.
+_LICENSE_TYPE=		known
+.			for var in ${_LICENSE_LIST_PORT_VARS}
+.				if defined(LICENSE_${var})
+_LICENSE_ERROR?=	redefining LICENSE_${var} is not allowed for known licenses, to define a custom license try another LICENSE name like ${_LICENSE}-variant
+.				endif
+.				if !defined(_LICENSE_${var}_${lic})
+_LICENGE_ERROR?=	ERROR: missing _LICENSE_${var}_${lic} in bsd.licenses.db.mk
+.				else
+_LICENSE_${var}=	${_LICENSE_${var}_${lic}}
+.				endif
+.			endfor
+# Check for LICENSE_FILE or at least LICENSE_TEXT (which simulates it)
+.			if !defined(LICENSE_FILE)
+.				if !defined(LICENSE_TEXT)
+# XXX Until we have a license pool under /usr/ports/Licenses use this
+_LICENSE_TEXT=		The license: ${_LICENSE} (${_LICENSE_NAME}) is standard, please read from the web.
+_LICENSE_FILE=		${WRKDIR}/${lic}
+.				else
+_LICENSE_ERROR?=	defining LICENSE_TEXT is not allowed for known licenses
+.				endif
+.			else
+_LICENSE_FILE=		${LICENSE_FILE}
+.			endif
+
+.		else
+# Case 2: license only known by the port.
+_LICENSE_TYPE=		unknown
+.			for var in ${_LICENSE_LIST_PORT_VARS}
+.				if defined(LICENSE_${var})
+_LICENSE_${var}=	${LICENSE_${var}}
+.				elif !defined(_LICENSE_${var})
+_LICENSE_ERROR?=	for unknown licenses, defining LICENSE_${var} is mandatory (otherwise use a known LICENSE)
+.				endif
+.			endfor
+# Check LICENSE_PERMS for invalid, ambiguous and duplicate components
+__LICENSE_PERMS:=	#
+.			for comp in ${_LICENSE_PERMS}
+.				if ${_LICENSE_LIST_PERMS:M${comp:C/^no-//}} == ""
+_LICENSE_ERROR?=	invalid LICENSE_PERMS component "${comp}"
+.				elif ${__LICENSE_PERMS:M${comp}} == "" && \
+					 ${_LICENSE_PERMS:Mno-${comp:C/^no-//}} == ""
+__LICENSE_PERMS+=	${comp}
+.				endif
+.			endfor
+_LICENSE_PERMS:=	${__LICENSE_PERMS}
+.			undef __LICENSE_PERMS
+# Check for LICENSE_FILE or at least LICENSE_TEXT (which simulates it)
+.			if !defined(LICENSE_FILE)
+.				if !defined(LICENSE_TEXT)
+_LICENSE_ERROR?=	either LICENSE_FILE or LICENSE_TEXT must be defined
+.				else
+_LICENSE_TEXT=		${LICENSE_TEXT}
+_LICENSE_FILE=		${WRKDIR}/${lic}
+.				endif
+.			else
+_LICENSE_FILE=		${LICENSE_FILE}
+.			endif
+.		endif
+
+# Only one is allowed
+.		if defined(LICENSE_FILE) && defined(LICENSE_TEXT)
+_LICENSE_ERROR?=	defining both LICENSE_FILE and LICENSE_TEXT is not allowed
+.		endif
+# Distfiles
+.		if !defined(LICENSE_DISTFILES)
+_LICENSE_DISTFILES=	${_DISTFILES}
+.		else
+_LICENSE_DISTFILES=	${LICENSE_DISTFILES}
+.		endif
+.	endfor
+
+.else
+.	for lic in ${_LICENSE}
+# Defaults to empty
+_LICENSE_GROUPS_${lic}?=#
+.		if ${_LICENSE_LIST:M${lic}} != ""
+# Case 1: license defined in the framework.
+_LICENSE_TYPE_${lic}=	known
+.			for var in ${_LICENSE_LIST_PORT_VARS}
+.				if defined(LICENSE_${var}_${lic})
+_LICENSE_ERROR?=	redefining LICENSE_${var}_${lic} is not allowed for known licenses, to define a custom license try another LICENSE name for ${lic} like ${lic}-variant
+.				endif
+.				if !defined(_LICENSE_${var}_${lic})
+_LICENGE_ERROR?=	ERROR: missing _LICENSE_${var}_${lic} in bsd.licenses.db.mk
+.				endif
+.			endfor
+# Check for LICENSE_FILE or at least LICENSE_TEXT (which simulates it)
+.			if !defined(LICENSE_FILE_${lic})
+.				if !defined(LICENSE_TEXT_${lic})
+# XXX Until we have a license pool under /usr/ports/Licenses use this
+_LICENSE_TEXT_${lic}=	The license: ${lic} (${_LICENSE_NAME_${lic}}) is standard, please read from the web.
+_LICENSE_FILE_${lic}=	${WRKDIR}/${lic}
+.				else
+_LICENSE_ERROR?=		defining LICENSE_TEXT_${lic} is not allowed for known licenses
+.				endif
+.			else
+_LICENSE_FILE_${lic}=	${LICENSE_FILE_${lic}}
+.			endif
+
+.		else
+# Case 2: license only known by the port.
+_LICENSE_TYPE_${lic}=	unknown
+.			for var in ${_LICENSE_LIST_PORT_VARS}
+.				if defined(LICENSE_${var}_${lic})
+_LICENSE_${var}_${lic}=	${LICENSE_${var}_${lic}}
+.				elif !defined(_LICENSE_${var}_${lic})
+_LICENSE_ERROR?=	for unknown licenses, defining LICENSE_${var}_${lic} is mandatory (otherwise use a known LICENSE)
+.				endif
+.			endfor
+# Check LICENSE_PERMS for invalid, ambiguous and duplicate components
+__LICENSE_PERMS:=	#
+.			for comp in ${_LICENSE_PERMS_${lic}}
+.				if ${_LICENSE_LIST_PERMS:M${comp:C/^no-//}} == ""
+_LICENSE_ERROR?=		invalid LICENSE_PERMS_${var} component "${comp}"
+.				elif ${__LICENSE_PERMS:M${comp}} == "" && \
+					 ${_LICENSE_PERMS_${lic}:Mno-${comp:C/^no-//}} == ""
+__LICENSE_PERMS+=		${comp}
+.				endif
+.			endfor
+_LICENSE_PERMS_${lic}:=	${__LICENSE_PERMS}
+.			undef __LICENSE_PERMS
+# Check for LICENSE_FILE or at least LICENSE_TEXT (which simulates it)
+.			if !defined(LICENSE_FILE_${lic})
+.				if !defined(LICENSE_TEXT_${lic})
+_LICENSE_ERROR?=		either LICENSE_FILE_${lic} or LICENSE_TEXT_${lic} must be defined
+.				else
+_LICENSE_TEXT_${lic}=	${LICENSE_TEXT_${lic}}
+_LICENSE_FILE_${lic}=	${WRKDIR}/${lic}
+.				endif
+.			else
+_LICENSE_FILE_${lic}=	${LICENSE_FILE_${lic}}
+.			endif
+.		endif
+
+# Only one is allowed
+.		if defined(LICENSE_FILE_${lic}) && defined(LICENSE_TEXT_${lic})
+_LICENSE_ERROR?=		defining both LICENSE_FILE_${lic} and LICENSE_TEXT_${lic}is not allowed
+.		endif
+# Distfiles
+.		if !defined(LICENSE_DISTFILES_${lic})
+_LICENSE_DISTFILES_${lic}=	${_DISTFILES}
+.		else
+_LICENSE_DISTFILES_${lic}=	${LICENSE_DISTFILES_${lic}}
+.		endif
+.	endfor
+.endif
+
+# Check if the user agrees with the license
+
+# Make sure these are defined
+
+LICENSES_ACCEPTED?=			#
+LICENSES_REJECTED?=			#
+LICENSES_GROUPS_ACCEPTED?=	#
+LICENSES_GROUPS_REJECTED?=	#
+
+# Evaluate per-license status
+
+.if ${_LICENSE_COMB} == "single"
+.	for lic in ${_LICENSE}
+.		if ${LICENSES_REJECTED:M${lic}} != ""
+_LICENSE_STATUS?=	rejected
+.		endif
+.		for group in ${_LICENSE_GROUPS}
+.			if ${LICENSES_GROUPS_REJECTED:M${group}} != ""
+_LICENSE_STATUS?=	rejected
+.			endif
+.			if ${LICENSES_GROUPS_ACCEPTED:M${group}} != ""
+_LICENSE_STATUS?=	accepted
+.			endif
+.		endfor
+.		if ${LICENSES_ACCEPTED:M${lic}} != ""
+_LICENSE_STATUS?=	accepted
+.		endif
+.		if ${_LICENSE_PERMS:Mauto-accept} != "" && !defined(LICENSES_ASK)
+_LICENSE_STATUS?=	accepted
+.		endif
+_LICENSE_STATUS?=	ask
+.	endfor
+
+.else
+.	for lic in ${_LICENSE}
+.		if ${LICENSES_REJECTED:M${lic}} != ""
+_LICENSE_STATUS_${lic}?=	rejected
+.		endif
+.		for group in ${_LICENSE_GROUPS_${lic}}
+.			if ${LICENSES_GROUPS_REJECTED:M${group}} != ""
+_LICENSE_STATUS_${lic}?=	rejected
+.			endif
+.			if ${LICENSES_GROUPS_ACCEPTED:M${group}} != ""
+_LICENSE_STATUS_${lic}?=	accepted
+.			endif
+.		endfor
+.		if ${LICENSES_ACCEPTED:M${lic}} != ""
+_LICENSE_STATUS_${lic}?=	accepted
+.		endif
+.		if ${_LICENSE_PERMS_${lic}:Mauto-accept} != "" && !defined(LICENSES_ASK)
+_LICENSE_STATUS_${lic}?=	accepted
+.		endif
+_LICENSE_STATUS_${lic}?=	ask
+.	endfor
+.endif
+
+# Evaluate general status
+
+.if ${_LICENSE_COMB} == "dual"
+.	for lic in ${_LICENSE}
+.		if ${_LICENSE_STATUS_${lic}} == "accepted"
+_LICENSE_STATUS=	accepted
+.		elif ${_LICENSE_STATUS_${lic}} == "ask"
+_LICENSE_STATUS?=	ask
+_LICENSE_TO_ASK+=	${lic}
+.		endif
+_LICENSE_STATUS?=	rejected
+.	endfor
+
+.elif ${_LICENSE_COMB} == "multi"
+.	for lic in ${_LICENSE}
+.		if ${_LICENSE_STATUS_${lic}} == "rejected"
+_LICENSE_STATUS=	rejected
+.		elif ${_LICENSE_STATUS_${lic}} == "ask"
+_LICENSE_STATUS?=	ask
+_LICENSE_TO_ASK+=	${lic}
+.		endif
+.	endfor
+_LICENSE_STATUS?=	accepted
+.endif
+
+# For dual/multi licenses, after processing all sub-licenses, the following
+# must be determined: _LICENSE_NAME, _LICENSE_PERMS and _LICENSE_GROUPS.
+
+.if ${_LICENSE_COMB} == "dual"
+_LICENSE_NAME=		Dual (any of): ${_LICENSE}
+# Calculate least restrictive permissions (union)
+_LICENSE_PERMS:=	#
+.	for lic in ${_LICENSE}
+.		for comp in ${_LICENSE_LIST_PERMS}
+.			if ${_LICENSE_PERMS_${lic}:M${comp}} != "" && \
+			   ${_LICENSE_PERMS:M${comp}} == ""
+_LICENSE_PERMS+=	${comp}
+.			endif
+.		endfor
+.	endfor
+# Calculate least restrictive groups (union)
+_LICENSE_GROUPS:=	#
+.	for lic in ${_LICENSE}
+.		for comp in ${_LICENSE_LIST_GROUPS}
+.			if ${_LICENSE_GROUPS_${lic}:M${comp}} != "" && \
+			   ${_LICENSE_GROUPS:M${comp}} == ""
+_LICENSE_GROUPS+=	${comp}
+.			endif
+.		endfor
+.	endfor
+
+.elif ${_LICENSE_COMB} == "multi"
+_LICENSE_NAME=		Multiple (all of): ${_LICENSE}
+# Calculate most restrictive permissions (intersection)
+_LICENSE_PERMS:=	${_LICENSE_LIST_PERMS}
+.	for lic in ${_LICENSE}
+.		for comp in ${_LICENSE_LIST_PERMS}
+.			if ${_LICENSE_PERMS_${lic}:M${comp}} == ""
+_LICENSE_PERMS:=	${_LICENSE_PERMS:N${comp}}
+.			endif
+.		endfor
+.	endfor
+# Calculate most restrictive groups (intersection)
+_LICENSE_GROUPS:=	${_LICENSE_LIST_GROUPS}
+.	for lic in ${_LICENSE}
+.		for comp in ${_LICENSE_LIST_GROUPS}
+.			if ${_LICENSE_GROUPS_${lic}:M${comp}} == ""
+_LICENSE_GROUPS:=	${_LICENSE_GROUPS:N${comp}}
+.			endif
+.		endfor
+.	endfor
+.endif
+
+# Prepare information for asking license to the user
+
+.if ${_LICENSE_STATUS} == "ask" && ${_LICENSE_COMB} != "single"
+_LICENSE_ASK_DATA!=	mktemp -t portslicense
+.endif
+
+# Calculate restrictions and set RESTRICTED_FILES when
+# appropiate, together with cleaning targets.
+#
+# XXX For multiple licenses restricted distfiles are always removed from both
+# CDROM and FTP, but the current framework supports separating them (would
+# require better/new delete-package and delete-distfiles targets)
+
+.if ${_LICENSE_PERMS:Mpkg-mirror} == ""
+_LICENSE_RESTRICTED+=	delete-package
+.elif ${_LICENSE_PERMS:Mpkg-sell} == ""
+_LICENSE_CDROM+=		delete-package
+.endif
+
+.if ${_LICENSE_COMB} == "multi"
+.	for lic in ${_LICENSE}
+.		if ${_LICENSE_PERMS_${lic}:Mdist-mirror} == "" || ${_LICENSE_PERMS_${lic}:Mdist-sell} == ""
+RESTRICTED_FILES+=		${_LICENSE_DISTFILES_${lic}}
+.		endif
+.	endfor
+.	if defined(RESTRICTED_FILES)
+RESTRICTED_FILES+=		${_PATCHFILES}
+_LICENSE_RESTRICTED+=	delete-distfiles
+_LICENSE_CDROM+=		delete-distfiles
+.	endif
+.else
+.	if ${_LICENSE_PERMS:Mdist-mirror} == ""
+_LICENSE_RESTRICTED+=	delete-distfiles
+RESTRICTED_FILES=		${_PATCHFILES} ${_DISTFILES}
+.	elif ${_LICENSE_PERMS:Mdist-sell} == ""
+_LICENSE_CDROM+=		delete-distfiles
+RESTRICTED_FILES=		${_PATCHFILES} ${_DISTFILES}
+.	endif
+.endif
+
+.if defined(_LICENSE_RESTRICTED)
+clean-restricted:	${_LICENSE_RESTRICTED}
+clean-restricted-list: ${_LICENSE_RESTRICTED:C/$/-list/}
+.else
+clean-restricted:
+clean-restricted-list:
+.endif
+
+.if defined(_LICENSE_CDROM)
+clean-for-cdrom:	${_LICENSE_CDROM}
+clean-for-cdrom-list: ${_LICENSE_CDROM:C/$/-list/}
+.else
+clean-for-cdrom:
+clean-for-cdrom-list:
+.endif
+
+# Check variables are correctly defined and print status up to here
+
+check-license:
+.if defined(_LICENSE_ERROR)
+		@${ECHO_MSG} "===>  License not correctly defined: ${_LICENSE_ERROR}"
+		@exit 1
+.endif
+.	if ${_LICENSE_STATUS} == "rejected"
+		@${ECHO_MSG} "===>  License rejected by the user"
+		@${ECHO_MSG}
+		@${ECHO_MSG} "If you want to install this port make sure the following license(s) are not present in LICENSES_REJECTED, either in make arguments or /etc/make.conf: ${_LICENSE}. Also check LICENSES_GROUPS_REJECTED in case they contain a group this license(s) belong to." | ${FMT}
+		@${ECHO_MSG}
+		@exit 1
+.	elif ${_LICENSE_STATUS} == "accepted"
+		@${ECHO_MSG} "===>  License accepted by the user"
+.	elif ${_LICENSE_STATUS} == "ask"
+.		if defined(BATCH)
+		@${ECHO_MSG} "===>  License needs confirmation, but BATCH is defined"
+		@exit 1
+.		else
+		@${ECHO_MSG} "===>  License needs confirmation, will ask later"
+.		endif
+.	endif
+
+# Display, ask and save preference if requested
+
+ask-license: ${_LICENSE_COOKIE}
+
+${_LICENSE_COOKIE}:
+# Make sure all required license files exist
+.if ${_LICENSE_COMB} == "single"
+.	if !defined(LICENSE_FILE) && defined(_LICENSE_TEXT)
+	@test -f ${_LICENSE_FILE} || ${ECHO_CMD} "${_LICENSE_TEXT}" | ${FMT} > ${_LICENSE_FILE}
+.	endif
+	@test -f ${_LICENSE_FILE} || \
+		(${ECHO_MSG} "===>  Missing license file for ${_LICENSE} in ${_LICENSE_FILE}"; exit 1)
+.else
+.	for lic in ${_LICENSE}
+.		if !defined(LICENSE_FILE_${lic}) && defined(_LICENSE_TEXT_${lic})
+	@test -f ${_LICENSE_FILE_${lic}} || ${ECHO_CMD} "${_LICENSE_TEXT_${lic}}" | ${FMT} > ${_LICENSE_FILE_${lic}}
+.		endif
+	@test -f ${_LICENSE_FILE_${lic}} || \
+		(${ECHO_MSG} "===>  Missing license file for ${lic} in ${_LICENSE_FILE_${lic}}"; exit 1)
+.	endfor
+.endif
+
+.if ${_LICENSE_STATUS} == "ask"
+.	if !defined(NO_LICENSES_DIALOGS)
+# Dialog interface
+.		if ${_LICENSE_COMB} == "single"
+	@while true; do \
+		tmpfile=$$(mktemp -t portlicenses); \
+		${DIALOG} --menu "License for ${PKGNAME} (${_LICENSE})" 21 70 15 accept "Accept license" reject "Reject license" view "View license" 2>"$${tmpfile}"; \
+		result=`${CAT} $${tmpfile}`; \
+		case $${result} in \
+		accept) break ;; \
+		reject) exit 1;; \
+		view)   ${DIALOG} --textbox "${_LICENSE_FILE}" 21 75 ;; \
+		esac; \
+	done
+
+.		elif ${_LICENSE_COMB} == "dual"
+	@${RM} -f ${_LICENSE_ASK_DATA}
+.			for lic in ${_LICENSE_TO_ASK}
+	@${ECHO_CMD} "${lic}:${_LICENSE_FILE_${lic}}" >> ${_LICENSE_ASK_DATA}
+.			endfor
+	@menu_cmd="${DIALOG} --hline \"This port requires you to accept at least one license\" --menu \"License for ${PKGNAME} (dual)\" 21 70 15"; \
+	tmpfile=$$(mktemp -t portlicenses); \
+	for lic in ${_LICENSE_TO_ASK}; do \
+		menu_cmd="$${menu_cmd} VIEW_$${lic} \"View the license $${lic}\" USE_$${lic} \"Accept the license $${lic}\""; \
+	done; \
+	menu_cmd="$${menu_cmd} REJECT \"Reject the licenses (all)\""; \
+	while true; do \
+		${SH} -c "$${menu_cmd} 2>\"$${tmpfile}\""; \
+		result=$$(${CAT} "$${tmpfile}"); \
+		case $${result} in \
+		REJECT) exit 1;; \
+		VIEW_*) name=$$(${ECHO_CMD} $${result} | ${SED} -e 's/^VIEW_//'); \
+				file=$$(${GREP} "^$${name}:" ${_LICENSE_ASK_DATA} | ${CUT} -d : -f 2); \
+				${DIALOG} --textbox "$${file}" 21 75 ;; \
+		USE_*)  name=$$(${ECHO_CMD} $${result} | ${SED} -e 's/^USE_//'); \
+				${ECHO_CMD} $${name} > ${_LICENSE_COOKIE}; \
+				break ;; \
+		esac; \
+	done
+
+.		elif ${_LICENSE_COMB} == "multi"
+	@${RM} -f ${_LICENSE_ASK_DATA}
+.			for lic in ${_LICENSE_TO_ASK}
+	@${ECHO_CMD} "${lic}:${_LICENSE_FILE_${lic}}" >> ${_LICENSE_ASK_DATA}
+.			endfor
+	@menu_cmd="${DIALOG} --hline \"This port requires you to accept all mentioned licenses\" --menu \"License for ${PKGNAME} (multi)\" 21 70 15"; \
+	tmpfile=$$(mktemp -t portlicenses); \
+	for lic in ${_LICENSE_TO_ASK}; do \
+		menu_cmd="$${menu_cmd} VIEW_$${lic} \"View the license $${lic}\""; \
+	done; \
+	menu_cmd="$${menu_cmd} ACCEPT \"Accept the licenses (all)\" REJECT \"Reject the licenses (all)\""; \
+	while true; do \
+		${SH} -c "$${menu_cmd} 2>\"$${tmpfile}\""; \
+		result=$$(${CAT} "$${tmpfile}"); \
+		case $${result} in \
+		ACCEPT) break ;; \
+		REJECT) exit 1 ;; \
+		VIEW_*) name=$$(${ECHO_CMD} $${result} | ${SED} -e 's/^VIEW_//'); \
+				file=$$(${GREP} "^$${name}:" ${_LICENSE_ASK_DATA} | ${CUT} -d : -f 2); \
+				${DIALOG} --textbox "$${file}" 21 75 ;; \
+		esac; \
+	done
+.		endif
+
+.	else
+# Text interface
+	@${ECHO_MSG}
+.		if ${_LICENSE_COMB} == "single"
+	@${ECHO_MSG} "To install the port you must agree to the license: ${_LICENSE} (${_LICENSE_NAME})." | ${FMT}
+	@${ECHO_MSG}
+	@${ECHO_MSG} "You can view the license at ${_LICENSE_FILE:S/${WRKDIR}\//${WRKDIR:T}\//}."
+.		elif ${_LICENSE_COMB} == "dual"
+	@${ECHO_MSG} "To install the port you must agree to any of the following licenses:"
+.		elif ${_LICENSE_COMB} == "multi"
+	@${ECHO_MSG} "To install the port you must agree to all of the following licenses:"
+.		endif
+	@${ECHO_MSG}
+.		if ${_LICENSE_COMB} != "single"
+.			for lic in ${_LICENSE_TO_ASK}
+	@${ECHO_MSG} "- ${lic} (${_LICENSE_NAME_${lic}}), available at ${_LICENSE_FILE_${lic}:S/${WRKDIR}\//${WRKDIR:T}\//}"
+.			endfor
+	@${ECHO_MSG}
+.		endif
+	@${ECHO_MSG} "If you agree with the corresponding license(s), add them to LICENSES_ACCEPTED either in make arguments or /etc/make.conf." | ${FMT}
+	@${ECHO_MSG}
+	@exit 1
+.	endif
+.endif
+
+# Create report and catalog
+.if !defined(NO_LICENSES_INSTALL)
+	@${RM} -f ${_LICENSE_CATALOG_TMP} ${_LICENSE_REPORT_TMP}
+.	if ${_LICENSE_COMB} == "single"
+# Catalog
+.		for var in _LICENSE _LICENSE_NAME _LICENSE_PERMS _LICENSE_GROUPS _LICENSE_DISTFILES
+	@${ECHO_CMD} "${var}=${${var}:C/^[[:blank:]]*//}" >> ${_LICENSE_CATALOG_TMP}
+.		endfor
+# Report
+	@${ECHO_CMD} "This package has a single license: ${_LICENSE} (${_LICENSE_NAME})." > ${_LICENSE_REPORT_TMP}
+.	else
+# Catalog
+.		for var in _LICENSE _LICENSE_COMB _LICENSE_NAME _LICENSE_PERMS _LICENSE_GROUPS
+	@${ECHO_CMD} "${var}=${${var}:C/^[[:blank:]]*//}" >> ${_LICENSE_CATALOG_TMP}
+.		endfor
+.		if ${_LICENSE_COMB} == "dual" && ${_LICENSE_STATUS} == "ask"
+	@${SED} -e 's/^/_LICENSE_SELECTED=/' ${_LICENSE_COOKIE} >> ${_LICENSE_CATALOG_TMP}
+.		endif
+.		for lic in ${_LICENSE}
+.			for var in NAME PERMS GROUPS DISTFILES
+	@${ECHO_CMD} "_LICENSE_${var}_${lic}=${_LICENSE_${var}_${lic}:C/^[[:blank:]]*//}" >> ${_LICENSE_CATALOG_TMP}
+.			endfor
+.		endfor
+# Report
+.		if ${_LICENSE_COMB} == "dual"
+	@${ECHO_CMD} "This package has dual licenses (any of):"  >> ${_LICENSE_REPORT_TMP}
+.		elif ${_LICENSE_COMB} == "multi"
+	@${ECHO_CMD} "This package has multiple licenses (all of):"  >> ${_LICENSE_REPORT_TMP}
+.		endif
+.		for lic in ${_LICENSE}
+	@${ECHO_CMD} "- ${lic} (${_LICENSE_NAME_${lic}})"  >> ${_LICENSE_REPORT_TMP}
+.		endfor
+.	endif
+.endif
+
+# Cookie (done here)
+	@${TOUCH} ${_LICENSE_COOKIE}
+
+# Package list entries, and installation
+
+.if !defined(NO_LICENSES_INSTALL)
+PLIST_FILES+=	${_LICENSE_DIR_REL}/${_LICENSE_CATALOG:T} \
+				${_LICENSE_DIR_REL}/${_LICENSE_REPORT:T}
+PLIST_DIRS+=	${_LICENSE_DIR_REL}
+
+.if ${_LICENSE_COMB} == "single"
+PLIST_FILES+=	${_LICENSE_DIR_REL}/${_LICENSE_FILE:T}
+.else
+.	for lic in ${_LICENSE}
+.		if defined(_LICENSE_FILE_${lic})
+PLIST_FILES+=	${_LICENSE_DIR_REL}/${_LICENSE_FILE_${lic}:T}
+.		endif
+.	endfor
+.endif
+
+install-license:
+	@${MKDIR} ${_LICENSE_DIR}
+	@${INSTALL_DATA} ${_LICENSE_CATALOG_TMP} ${_LICENSE_CATALOG}
+	@${INSTALL_DATA} ${_LICENSE_REPORT_TMP} ${_LICENSE_REPORT}
+.if ${_LICENSE_COMB} == "single"
+	@${INSTALL_DATA} ${_LICENSE_FILE} ${_LICENSE_DIR}
+.else
+.	for lic in ${_LICENSE}
+	@${INSTALL_DATA} ${_LICENSE_FILE_${lic}} ${_LICENSE_DIR}
+.	endfor
+.endif
+# XXX @dirrmtry entry must be here (no way to do with PLIST_* vars)
+	@${ECHO_CMD} "@unexec rmdir %D/share/licenses 2>/dev/null || true" >> ${TMPPLIST}
+
+.else
+install-license:
+	@${DO_NADA}
+
+.endif
+
+.else	# !LICENSE
+
+check-license:
+	@${ECHO_MSG} "===>  License check disabled, port has not defined LICENSE"
+
+ask-license:
+	@${DO_NADA}
+
+install-license:
+	@${DO_NADA}
+
+.endif	# LICENSE
+
+.endif