summaryrefslogtreecommitdiff
path: root/src/lib/libreblacklist
blob: 1e5a4677277b6e55fc31381aa51d544b17910818 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
#!/usr/bin/env bash
# This may be included with or without `set -euE`
# When run directly, it does `set -euE`

# Copyright (C) 2013-2014 Luke Shumaker <lukeshu@sbcglobal.net>
#
# License: GNU GPLv2+
#
# 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/>.

# make sure XDG_CACHE_HOME is set
. "$(librelib conf)"

# Usage: blacklist-normalize <$file
# Normalizes the syntax of the blacklist on stdin.
blacklist-normalize() {
	sed -e '/^#/d' -e 's/^[^:]*$/&::/' -e 's/^[^:]*:[^:]*$/&:/'
}

# Usage: blacklist-cat
# Prints the blacklist.
# Uses the cache, but downloads it if it doesn't exist.  Also normalizes the blacklist for easier parsing.
blacklist-cat() {
	local file="$XDG_CACHE_HOME/libretools/blacklist.txt"
	if ! [[ -e $file ]]; then
		# exit on failure, whether set -e or not
		blacklist-update || return $?
	fi
	blacklist-normalize < "$file"
}

# Usage: blacklist-update
# Updates (or creates) the cached copy of the blacklist.
blacklist-update() (
	. libremessages
	load_files libretools || return 1
	check_vars libretools BLACKLIST || return 1

	local remote_blacklist="$BLACKLIST"
	local local_blacklist="$XDG_CACHE_HOME/libretools/blacklist.txt"

	_l stat_busy "Downloading blacklist of proprietary software packages"

	mkdir -p "${local_blacklist%/*}"
	if wget -N -q -O "${local_blacklist}.part" "$remote_blacklist" 2>/dev/null; then
		stat_done
		mv -f "${local_blacklist}.part" "$local_blacklist"
	else
		stat_done
		rm "${local_blacklist}.part"
		if [[ -e "$local_blacklist" ]]; then
			_l warning "Using local copy of blacklist"
		else
			_l error "Download failed, exiting"
			return 1
		fi

	fi
)

# Usage: blacklist-cat | blacklist-lookup $pkgname
# Filters to obtain the line for $pkgname from the blacklist on stdin.
# Exits successfully whether a line is found or not.
blacklist-lookup() {
	local pkg=$1
	# we accept that $pkg contains no regex-nes
	blacklist-normalize | grep "^$pkg:" || true
}

# Usage: blacklist-cat | blacklist-get-pkg
# Prints only the package name field of the blacklist line(s) on stdin.
blacklist-get-pkg() {
	blacklist-normalize | cut -d: -f1
}

# Usage: blacklist-cat | blacklist-get-rep
# Prints only the replacement package field of the blacklist line(s) on stdin.
blacklist-get-rep() {
	blacklist-normalize | cut -d: -f2
}

# Usage: blacklist-cat | blacklist-get-reason
# Prints only the reason field of the blacklist line(s) on stdin.
blacklist-get-reason() {
	blacklist-normalize | cut -d: -f3-
}

if [[ "${0##*/}" == libreblacklist ]]; then
	set -euE
	usage-outside() {
		sed -n '/^# Usage:/,/()/p' "$0" |
		tr '\n' '\r' | sed 's/\s*()\s*[{(]/\n/g'
	}
	# The output format of this is:
	#  - The first line is "Usage:"
	#  - The second line is a brief description
	#  - The last line is the command name (prefixed with "blacklist-")
	#  - The in-between lines are the extended description.
	usage-inside() {
		sed 's/\r/\n/g'<<<"$1"|sed -e '/^$/d' -e 's/^# //'
	}
	usage() {
		export TEXTDOMAIN='librelib'
		export TEXTDOMAINDIR='/usr/share/locale'
		. "$(librelib messages)"
		if [[ $# -eq 0 ]]; then
			print "Usage: %s [-h] COMMAND [ARGUMENTS]" "${0##*/}"
			print "Tool for working with the nonfree software blacklist"
			echo
			print "Commands:"
			usage-outside | while read -r sec; do sec="$(usage-inside "$sec")"
				cmd=$(<<<"$sec" sed -n '$s/^blacklist-//p')
				desc="$(_ "$(sed -n 2p <<<"$sec")")"
				flag "$cmd" "${desc//blacklist-/${0##*/} }"
			done
		else
			usage-outside | while read -r sec; do sec="$(usage-inside "$sec")"
				cmd=$(<<<"$sec" sed -n '$s/^blacklist-//p')
				if [[ "$cmd" == "$1" ]]; then
					<<<"$sec" sed '$d' |
					while read -r line; do print "$line"; done |
					sed "s/blacklist-/${0##*/} /g" |
					fmt -us
					return 0
				fi
			done
		fi
	}

	if [[ $# -eq 0 ]]; then
		usage >&2
		exit 1
	fi
	_blacklist_cmd=$1
	shift
	if [[ $_blacklist_cmd == -h ]]; then
		usage "$@"
	else
		"blacklist-$_blacklist_cmd" "$@"
	fi
fi