#-*- 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
#
# DISABLE_LICENSES			- Disable license auditing framework completely.
# 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) && !defined(DISABLE_LICENSES)

# 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}_${lic})
_LICENSE_ERROR?=	ERROR: missing _LICENSE_${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}_${lic})
_LICENSE_ERROR?=	ERROR: missing _LICENSE_${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}

.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} "@cwd ${PREFIX}" >> ${TMPPLIST}
	@${ECHO_CMD} "@dirrm ${_LICENSE_DIR_REL}" >> ${TMPPLIST}
	@${ECHO_CMD} "@unexec rmdir %D/share/licenses 2>/dev/null || true" >> ${TMPPLIST}

.else
install-license:
	@${DO_NADA}

.endif

.elif !defined(DISABLE_LICENSES)	# !LICENSE

check-license:
	@${ECHO_MSG} "===>  License check disabled, port has not defined LICENSE"

.endif	# LICENSE

.endif