libmakepkg/lint_pkgbuild: lint depends/etc. as if they are pkgname

depends, provides, conflicts, replaces, and other variables that are
meant to contain package names, are now checked to ensure

1) the name component contains only characters that would equate to
   a valid pkgname.
2) the version component contains only characters that would equate
   to a valid pkgver.
3) comparison operator is a valid comparison operator (e.g. provides
   only allows exact = while optdepends doesn't allow anything)

This also refactors pkgname into a shared utility function, wires up
pkgbase optdepends and provides to use it, and gives pkgver a touchup
to allow referencing where it was called from.

Fixes FS#57833 and a bit of extra.

Signed-off-by: Eli Schwartz <eschwartz@archlinux.org>
Signed-off-by: Allan McRae <allan@archlinux.org>

10 files changed, 308 insertions, 82 deletions

diff --git a/scripts/libmakepkg/lint_pkgbuild/checkdepends.sh.in b/scripts/libmakepkg/lint_pkgbuild/checkdepends.sh.in
new file mode 100644
index 00000000..5d15bfb2
--- /dev/null
+++ b/scripts/libmakepkg/lint_pkgbuild/checkdepends.sh.in
@@ -0,0 +1,56 @@
+#!/bin/bash
+#
+#   checkdepends.sh - Check the 'checkdepends' array conforms to requirements.
+#
+#   Copyright (c) 2014-2018 Pacman Development Team <pacman-dev@archlinux.org>
+#
+#   This program is free software; you can redistribute it and/or modify
+#   it under the terms of the GNU General Public License as published by
+#   the Free Software Foundation; either version 2 of the License, or
+#   (at your option) any later version.
+#
+#   This program is distributed in the hope that it will be useful,
+#   but WITHOUT ANY WARRANTY; without even the implied warranty of
+#   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+#   GNU General Public License for more details.
+#
+#   You should have received a copy of the GNU General Public License
+#   along with this program.  If not, see <http://www.gnu.org/licenses/>.
+#
+
+[[ -n "$LIBMAKEPKG_LINT_PKGBUILD_CHECKDEPENDS_SH" ]] && return
+LIBMAKEPKG_LINT_PKGBUILD_CHECKDEPENDS_SH=1
+
+LIBRARY=${LIBRARY:-'@libmakepkgdir@'}
+
+source "$LIBRARY/lint_pkgbuild/pkgname.sh"
+source "$LIBRARY/lint_pkgbuild/pkgver.sh"
+source "$LIBRARY/util/message.sh"
+source "$LIBRARY/util/pkgbuild.sh"
+
+
+lint_pkgbuild_functions+=('lint_checkdepends')
+
+
+lint_checkdepends() {
+	local checkdepends_list checkdepend name ver ret=0
+
+	get_pkgbuild_all_split_attributes checkdepends checkdepends_list
+
+	# save our shell options and turn on extglob
+	local shellopts=$(shopt -p)
+	shopt -s extglob
+
+	for checkdepend in "${checkdepends_list[@]}"; do
+		name=${checkdepend%%@(<|>|=|>=|<=)*}
+		ver=${checkdepend#*@(<|>|=|>=|<=)}
+		lint_one_pkgname checkdepends "$name" || ret=1
+		if [[ $ver != $checkdepend ]]; then
+			check_pkgver "$ver" checkdepends || ret=1
+		fi
+	done
+
+	eval "$shellopts"
+
+	return $ret
+}
diff --git a/scripts/libmakepkg/lint_pkgbuild/conflicts.sh.in b/scripts/libmakepkg/lint_pkgbuild/conflicts.sh.in
new file mode 100644
index 00000000..d81e9784
--- /dev/null
+++ b/scripts/libmakepkg/lint_pkgbuild/conflicts.sh.in
@@ -0,0 +1,56 @@
+#!/bin/bash
+#
+#   conflicts.sh - Check the 'conflicts' array conforms to requirements.
+#
+#   Copyright (c) 2014-2018 Pacman Development Team <pacman-dev@archlinux.org>
+#
+#   This program is free software; you can redistribute it and/or modify
+#   it under the terms of the GNU General Public License as published by
+#   the Free Software Foundation; either version 2 of the License, or
+#   (at your option) any later version.
+#
+#   This program is distributed in the hope that it will be useful,
+#   but WITHOUT ANY WARRANTY; without even the implied warranty of
+#   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+#   GNU General Public License for more details.
+#
+#   You should have received a copy of the GNU General Public License
+#   along with this program.  If not, see <http://www.gnu.org/licenses/>.
+#
+
+[[ -n "$LIBMAKEPKG_LINT_PKGBUILD_CONFLICTS_SH" ]] && return
+LIBMAKEPKG_LINT_PKGBUILD_CONFLICTS_SH=1
+
+LIBRARY=${LIBRARY:-'@libmakepkgdir@'}
+
+source "$LIBRARY/lint_pkgbuild/pkgname.sh"
+source "$LIBRARY/lint_pkgbuild/pkgver.sh"
+source "$LIBRARY/util/message.sh"
+source "$LIBRARY/util/pkgbuild.sh"
+
+
+lint_pkgbuild_functions+=('lint_conflicts')
+
+
+lint_conflicts() {
+	local conflicts_list conflict name ver ret=0
+
+	get_pkgbuild_all_split_attributes conflicts conflicts_list
+
+	# save our shell options and turn on extglob
+	local shellopts=$(shopt -p)
+	shopt -s extglob
+
+	for conflict in "${conflicts_list[@]}"; do
+		name=${conflict%%@(<|>|=|>=|<=)*}
+		ver=${conflict#*@(<|>|=|>=|<=)}
+		lint_one_pkgname conflicts "$name" || ret=1
+		if [[ $ver != $conflict ]]; then
+			check_pkgver "$ver" conflicts || ret=1
+		fi
+	done
+
+	eval "$shellopts"
+
+	return $ret
+}
diff --git a/scripts/libmakepkg/lint_pkgbuild/depends.sh.in b/scripts/libmakepkg/lint_pkgbuild/depends.sh.in
new file mode 100644
index 00000000..f17bc545
--- /dev/null
+++ b/scripts/libmakepkg/lint_pkgbuild/depends.sh.in
@@ -0,0 +1,56 @@
+#!/bin/bash
+#
+#   depends.sh - Check the 'depends' array conforms to requirements.
+#
+#   Copyright (c) 2014-2018 Pacman Development Team <pacman-dev@archlinux.org>
+#
+#   This program is free software; you can redistribute it and/or modify
+#   it under the terms of the GNU General Public License as published by
+#   the Free Software Foundation; either version 2 of the License, or
+#   (at your option) any later version.
+#
+#   This program is distributed in the hope that it will be useful,
+#   but WITHOUT ANY WARRANTY; without even the implied warranty of
+#   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+#   GNU General Public License for more details.
+#
+#   You should have received a copy of the GNU General Public License
+#   along with this program.  If not, see <http://www.gnu.org/licenses/>.
+#
+
+[[ -n "$LIBMAKEPKG_LINT_PKGBUILD_DEPENDS_SH" ]] && return
+LIBMAKEPKG_LINT_PKGBUILD_DEPENDS_SH=1
+
+LIBRARY=${LIBRARY:-'@libmakepkgdir@'}
+
+source "$LIBRARY/lint_pkgbuild/pkgname.sh"
+source "$LIBRARY/lint_pkgbuild/pkgver.sh"
+source "$LIBRARY/util/message.sh"
+source "$LIBRARY/util/pkgbuild.sh"
+
+
+lint_pkgbuild_functions+=('lint_depends')
+
+
+lint_depends() {
+	local depends_list depend name ver ret=0
+
+	get_pkgbuild_all_split_attributes depends depends_list
+
+	# save our shell options and turn on extglob
+	local shellopts=$(shopt -p)
+	shopt -s extglob
+
+	for depend in "${depends_list[@]}"; do
+		name=${depend%%@(<|>|=|>=|<=)*}
+		ver=${depend#*@(<|>|=|>=|<=)}
+		lint_one_pkgname depends "$name" || ret=1
+		if [[ $ver != $depend ]]; then
+			check_pkgver "$ver" depends || ret=1
+		fi
+	done
+
+	eval "$shellopts"
+
+	return $ret
+}
diff --git a/scripts/libmakepkg/lint_pkgbuild/makedepends.sh.in b/scripts/libmakepkg/lint_pkgbuild/makedepends.sh.in
new file mode 100644
index 00000000..1d0762fb
--- /dev/null
+++ b/scripts/libmakepkg/lint_pkgbuild/makedepends.sh.in
@@ -0,0 +1,56 @@
+#!/bin/bash
+#
+#   makedepends.sh - Check the 'makedepends' array conforms to requirements.
+#
+#   Copyright (c) 2014-2018 Pacman Development Team <pacman-dev@archlinux.org>
+#
+#   This program is free software; you can redistribute it and/or modify
+#   it under the terms of the GNU General Public License as published by
+#   the Free Software Foundation; either version 2 of the License, or
+#   (at your option) any later version.
+#
+#   This program is distributed in the hope that it will be useful,
+#   but WITHOUT ANY WARRANTY; without even the implied warranty of
+#   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+#   GNU General Public License for more details.
+#
+#   You should have received a copy of the GNU General Public License
+#   along with this program.  If not, see <http://www.gnu.org/licenses/>.
+#
+
+[[ -n "$LIBMAKEPKG_LINT_PKGBUILD_MAKEDEPENDS_SH" ]] && return
+LIBMAKEPKG_LINT_PKGBUILD_MAKEDEPENDS_SH=1
+
+LIBRARY=${LIBRARY:-'@libmakepkgdir@'}
+
+source "$LIBRARY/lint_pkgbuild/pkgname.sh"
+source "$LIBRARY/lint_pkgbuild/pkgver.sh"
+source "$LIBRARY/util/message.sh"
+source "$LIBRARY/util/pkgbuild.sh"
+
+
+lint_pkgbuild_functions+=('lint_makedepends')
+
+
+lint_makedepends() {
+	local makedepends_list makedepend name ver ret=0
+
+	get_pkgbuild_all_split_attributes makedepends makedepends_list
+
+	# save our shell options and turn on extglob
+	local shellopts=$(shopt -p)
+	shopt -s extglob
+
+	for makedepend in "${makedepends_list[@]}"; do
+		name=${makedepend%%@(<|>|=|>=|<=)*}
+		ver=${makedepend#*@(<|>|=|>=|<=)}
+		lint_one_pkgname makedepends "$name" || ret=1
+		if [[ $ver != $makedepend ]]; then
+			check_pkgver "$ver" makedepends || ret=1
+		fi
+	done
+
+	eval "$shellopts"
+
+	return $ret
+}
diff --git a/scripts/libmakepkg/lint_pkgbuild/optdepends.sh.in b/scripts/libmakepkg/lint_pkgbuild/optdepends.sh.in
index 7758334c..87e561cb 100644
--- a/scripts/libmakepkg/lint_pkgbuild/optdepends.sh.in
+++ b/scripts/libmakepkg/lint_pkgbuild/optdepends.sh.in
@@ -33,31 +33,13 @@ lint_pkgbuild_functions+=('lint_optdepends')
 lint_optdepends() {
 	local a list name optdepends_list ret=0
 
-	optdepends_list=("${optdepends[@]}")
-	for a in "${arch[@]}"; do
-		array_build list "optdepends_$a"
-		optdepends_list+=("${list[@]}")
-	done
-
-	for name in "${pkgname[@]}"; do
-		if extract_function_variable "package_$name" optdepends 1 list; then
-			optdepends_list+=("${list[@]}")
-		fi
+	local optdepends_list optdepend name ret=0
 
-		for a in "${arch[@]}"; do
-			if extract_function_variable "package_$name" "optdepends_$a" 1 list; then
-				optdepends_list+=("${list[@]}")
-			fi
-		done
-	done
+	get_pkgbuild_all_split_attributes optdepends optdepends_list
 
-	for name in "${optdepends_list[@]}"; do
-		local pkg=${name%%:[[:space:]]*}
-		# the '-' character _must_ be first or last in the character range
-		if [[ $pkg != +([-[:alnum:]><=.+_:]) ]]; then
-			error "$(gettext "Invalid syntax for %s: '%s'")" "optdepend" "$name"
-			ret=1
-		fi
+	for optdepend in "${optdepends_list[@]}"; do
+		name=${optdepend%%:[[:space:]]*}
+		lint_one_pkgname optdepends "$name" || ret=1
 	done
 
 	return $ret
diff --git a/scripts/libmakepkg/lint_pkgbuild/pkgbase.sh.in b/scripts/libmakepkg/lint_pkgbuild/pkgbase.sh.in
index b2f7af04..b012b226 100644
--- a/scripts/libmakepkg/lint_pkgbuild/pkgbase.sh.in
+++ b/scripts/libmakepkg/lint_pkgbuild/pkgbase.sh.in
@@ -23,6 +23,7 @@ LIBMAKEPKG_LINT_PKGBUILD_PKGBASE_SH=1
 
 LIBRARY=${LIBRARY:-'@libmakepkgdir@'}
 
+source "$LIBRARY/lint_pkgbuild/pkgname.sh"
 source "$LIBRARY/util/message.sh"
 
 
@@ -30,21 +31,9 @@ lint_pkgbuild_functions+=('lint_pkgbase')
 
 
 lint_pkgbase() {
-	local ret=0
-
-	if [[ ${pkgbase:0:1} = "-" ]]; then
-		error "$(gettext "%s is not allowed to start with a hyphen.")" "pkgname"
-		return 1
-	fi
-	if [[ ${pkgbase:0:1} = "." ]]; then
-		error "$(gettext "%s is not allowed to start with a dot.")" "pkgbase"
-		ret=1
-	fi
-	if [[ $pkgbase = *[^[:alnum:]+_.@-]* ]]; then
-		error "$(gettext "%s contains invalid characters: '%s'")" \
-				'pkgbase' "${i//[[:alnum:]+_.@-]}"
-		ret=1
+	if [[ -z $pkgbase ]]; then
+		return 0
 	fi
 
-	return $ret
+	lint_one_pkgname "pkgbase" "$pkgbase"
 }
diff --git a/scripts/libmakepkg/lint_pkgbuild/pkgname.sh.in b/scripts/libmakepkg/lint_pkgbuild/pkgname.sh.in
index 4024253e..d51c6313 100644
--- a/scripts/libmakepkg/lint_pkgbuild/pkgname.sh.in
+++ b/scripts/libmakepkg/lint_pkgbuild/pkgname.sh.in
@@ -29,34 +29,43 @@ source "$LIBRARY/util/message.sh"
 lint_pkgbuild_functions+=('lint_pkgname')
 
 
+lint_one_pkgname() {
+	local type=$1 name=$2 ret=0
+
+
+	if [[ -z $name ]]; then
+		error "$(gettext "%s is not allowed to be empty.")" "$type"
+		ret=1
+		continue
+	fi
+	if [[ ${name:0:1} = "-" ]]; then
+		error "$(gettext "%s is not allowed to start with a hyphen.")" "$type"
+		ret=1
+	fi
+	if [[ ${name:0:1} = "." ]]; then
+		error "$(gettext "%s is not allowed to start with a dot.")" "$type"
+		ret=1
+	fi
+	if [[ $name = *[^[:alnum:]+_.@-]* ]]; then
+		error "$(gettext "%s contains invalid characters: '%s'")" \
+				"$type" "${name//[[:alnum:]+_.@-]}"
+		ret=1
+	fi
+
+	return $ret
+}
+
 lint_pkgname() {
 	local ret=0 i
 
 	if [[ -z ${pkgname[@]} ]]; then
 		error "$(gettext "%s is not allowed to be empty.")" "pkgname"
-		return 1
+		ret=1
+	else
+		for i in "${pkgname[@]}"; do
+			lint_one_pkgname "pkgname" "$i" || ret=1
+		done
 	fi
 
-	for i in "${pkgname[@]}"; do
-		if [[ -z $i ]]; then
-			error "$(gettext "%s is not allowed to be empty.")" "pkgname"
-			ret=1
-			continue
-		fi
-		if [[ ${i:0:1} = "-" ]]; then
-			error "$(gettext "%s is not allowed to start with a hyphen.")" "pkgname"
-			ret=1
-		fi
-		if [[ ${i:0:1} = "." ]]; then
-			error "$(gettext "%s is not allowed to start with a dot.")" "pkgname"
-			ret=1
-		fi
-		if [[ $i = *[^[:alnum:]+_.@-]* ]]; then
-			error "$(gettext "%s contains invalid characters: '%s'")" \
-					'pkgname' "${i//[[:alnum:]+_.@-]}"
-			ret=1
-		fi
-	done
-
 	return $ret
 }
diff --git a/scripts/libmakepkg/lint_pkgbuild/pkgver.sh.in b/scripts/libmakepkg/lint_pkgbuild/pkgver.sh.in
index b9e2e439..c105212b 100644
--- a/scripts/libmakepkg/lint_pkgbuild/pkgver.sh.in
+++ b/scripts/libmakepkg/lint_pkgbuild/pkgver.sh.in
@@ -30,13 +30,15 @@ lint_pkgbuild_functions+=('lint_pkgver')
 
 
 check_pkgver() {
-	if [[ -z $1 ]]; then
-		error "$(gettext "%s is not allowed to be empty.")" "pkgver"
+	local ver=$1 type=$2
+
+	if [[ -z $ver ]]; then
+		error "$(gettext "%s is not allowed to be empty.")" "pkgver${type:+ in $type}"
 		return 1
 	fi
 
-	if [[ $1 = *[[:space:]/:-]* ]]; then
-		error "$(gettext "%s is not allowed to contain colons, forward slashes, hyphens or whitespace.")" "pkgver"
+	if [[ $ver = *[[:space:]/:-]* ]]; then
+		error "$(gettext "%s is not allowed to contain colons, forward slashes, hyphens or whitespace.")" "pkgver${type:+ in $type}"
 		return 1
 	fi
 }
diff --git a/scripts/libmakepkg/lint_pkgbuild/provides.sh.in b/scripts/libmakepkg/lint_pkgbuild/provides.sh.in
index c2407dc0..7500a88a 100644
--- a/scripts/libmakepkg/lint_pkgbuild/provides.sh.in
+++ b/scripts/libmakepkg/lint_pkgbuild/provides.sh.in
@@ -23,6 +23,8 @@ LIBMAKEPKG_LINT_PKGBUILD_PROVIDES_SH=1
 
 LIBRARY=${LIBRARY:-'@libmakepkgdir@'}
 
+source "$LIBRARY/lint_pkgbuild/pkgname.sh"
+source "$LIBRARY/lint_pkgbuild/pkgver.sh"
 source "$LIBRARY/util/message.sh"
 source "$LIBRARY/util/pkgbuild.sh"
 
@@ -31,30 +33,21 @@ lint_pkgbuild_functions+=('lint_provides')
 
 
 lint_provides() {
-	local a list name provides_list ret=0
+	local provides_list provide name ver ret=0
 
-	provides_list=("${provides[@]}")
-	for a in "${arch[@]}"; do
-		array_build list "provides_$a"
-		provides_list+=("${list[@]}")
-	done
-
-	for name in "${pkgname[@]}"; do
-		if extract_function_variable "package_$name" provides 1 list; then
-			provides_list+=("${list[@]}")
-		fi
-
-		for a in "${arch[@]}"; do
-			if extract_function_variable "package_$name" "provides_$a" 1 list; then
-				provides_list+=("${list[@]}")
-			fi
-		done
-	done
+	get_pkgbuild_all_split_attributes provides provides_list
 
 	for provide in "${provides_list[@]}"; do
 		if [[ $provide == *['<>']* ]]; then
 			error "$(gettext "%s array cannot contain comparison (< or >) operators.")" "provides"
 			ret=1
+			continue
+		fi
+		name=${provide%%=*}
+		ver=${provide#*=}
+		lint_one_pkgname provides "$name" || ret=1
+		if [[ $ver != $provide ]]; then
+			check_pkgver "$ver" provides || ret=1
 		fi
 	done
 
diff --git a/scripts/libmakepkg/util/pkgbuild.sh.in b/scripts/libmakepkg/util/pkgbuild.sh.in
index d35c064b..2db46f1f 100644
--- a/scripts/libmakepkg/util/pkgbuild.sh.in
+++ b/scripts/libmakepkg/util/pkgbuild.sh.in
@@ -116,6 +116,33 @@ get_pkgbuild_attribute() {
 	fi
 }
 
+get_pkgbuild_all_split_attributes() {
+	local attrname=$1 outputvar=$2 all_list list
+
+	if extract_global_variable "$attrname" 1 list; then
+		all_list+=("${list[@]}")
+	fi
+	for a in "${arch[@]}"; do
+		if extract_global_variable "${attrname}_$a" 1 list; then
+			all_list+=("${list[@]}")
+		fi
+	done
+
+	for name in "${pkgname[@]}"; do
+		if extract_function_variable "package_$name" "$attrname" 1 list; then
+			all_list+=("${list[@]}")
+		fi
+
+		for a in "${arch[@]}"; do
+			if extract_function_variable "package_$name" "${attrname}_$a" 1 list; then
+				all_list+=("${list[@]}")
+			fi
+		done
+	done
+
+	[[ ${all_list[@]} ]] && array_build "$outputvar" all_list
+}
+
 ##
 #  usage : get_full_version()
 # return : full version spec, including epoch (if necessary), pkgver, pkgrel