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
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
|
#!/bin/bash
# Imports packages from upstream Arch repos.
#
# License: GPLv3
set -eE -o pipefail
shopt -s extglob globstar nullglob
source "$(librelib messages)"
setup_traps
indent() {
/usr/lib/libretools/chroot/indent ' | '
}
# usage: expac_file <file.db> <expac_args>
#
# Uses the ${WORKDIR} global
expac_file() {
local dbfile=$1
local args=("${@:2}")
local reponame=${dbfile##*/}
reponame=${reponame%%.*}
mkdir -p -- "${WORKDIR}/expac/root"
cat >"${WORKDIR}/expac/pacman.conf" <<-EOT
[options]
RootDir = ${WORKDIR}/expac/root
DBPath = ${WORKDIR}/expac/root
[${reponame}]
Server = file://$(realpath --no-symlinks -- "${dbfile%/*}")
EOT
fakeroot pacman --config="${WORKDIR}/expac/pacman.conf" -Syy >/dev/null
# expac exits with non-zero on emtpy databases, so ignore errors
expac --config="${WORKDIR}/expac/pacman.conf" --sync "${args[@]}" || true
}
# usage: fetch_dbs <from> <into>
#
# Fetch excluding everything but db files
# TODO: we could be doing without things other than what is in
# ${ARCHTAGS[@]}
fetch_dbs() {
local extra=()
if [[ $arg_verbose = true ]]; then
extra+=(-v)
fi
rsync "${extra[@]}" --no-motd -mrtLH --no-p \
--include="*/" \
--include="*.db" \
--exclude="*" \
--delete-after \
"$1" "$2"
}
# usage: get_repo_dir <repo> <arch>
#
# Prints repo directory path for the given <repo> <arch> combination,
# relative to the rsync root.
get_repo_dir() {
repo=$1 arch=$2 envsubst '$repo $arch' <<<"$ARCHPATH"
}
# usage: db_list_pkgs <path-to-db>
#
# Prints a list of packages within a given <path-to-db>, one-per-line,
# in the format:
#
# pkgname [epoch:]pkgver-pkgrel
db_list_pkgs() {
expac_file "$1" '%n %v' | sort -u
}
# usage: filter_blacklisted <FULL_LIST >FILTERED_LIST
#
# Given a list of packages in the format:
#
# pkgname [epoch:]pkgver-pkgrel
#
# filter out all of the packages named in blacklist.txt.
filter_blacklisted() {
sort -u | join -v1 \
- \
<(libreblacklist cat | libreblacklist get-pkg | sort -u)
}
# usage: sync_pool <from> <path-to-whitelist> <into>
#
# Sync excluding everything but whitelist
sync_pool() {
local -r _from=$1 _whitelist=$2 _into=$3
local extra=()
if [[ $arg_verbose = true ]]; then
extra+=(-v)
fi
mkdir -p -- "$_into"
msg2 "Retrieving up to %d files from %s pool" \
"$(wc -l < "$_whitelist")" \
"$(basename "$_into")"
# *Don't delete-after*, this is the job of
# cleanup scripts. It will remove our packages too
rsync "${extra[@]}" --no-motd -rtlH --no-t \
--delay-updates \
--safe-links \
--include-from="$_whitelist" \
--exclude="*" \
"$_from" \
"$_into"
}
# Main function. Process the databases and get the libre packages
# Outline:
# 1. Fetch package info
# * Get blacklist.txt
# * Get repo.db from an Arch-like repo
# 2. Figure out what we want
# * Generate textfiles describing the current repo state, (using
# blacklist.txt) the desired repo state, and how to get from one
# to the other.
# 3. Fetch the packages we want
# * Symlink to files with the same name in INHERIT pools
# * sync_pool to download the others
# 4. Modify the repos
# * db-move
# * db-update
# * db-remove
#
# Files:
# (misc)
# - ${WORKDIR}/expac/ : Scratch directory for expac_file()
# (download)
# - ${WORKDIR}/rsync/ : Where we download '.db' files to
# - ${WORKDIR}/staging/${repo} : Where we download packages to
# - ${WORKDIR}/staging/${SRCPOOL} : Where we download sources to
# (analysis)
# - ${FTP_BASE}/${INHERIT} : Where we look for duplicate files
# - ${FTP_BASE}/.../${repo}.db : Where we generate ${WORKDIR}/old/ from
# - ${WORKDIR}/old/ : .txt files describing the way the repos are
# - ${WORKDIR}/new/ : .txt files describing the way we want them to be
# - ${WORKDIR}/dif/ : .txt files describing how to make it happen
# - ${WORKDIR}/${tag}.pkg.whitelist : List of package filenames to download
# - ${WORKDIR}/all.src.whitelist : Glob list of source-package filenames to download
# (release)
# - ${WORKDIR}/staging/ : STAGING= directory for db-update
main() {
##############################################################
# 0. Initialization #
##############################################################
# Run as `V=true db-import-pkg` to get verbose output
declare -r arg_verbose="$V"
# Print usage message
if [[ $# -ne 0 ]] || [[ -z "$DBSCRIPTS_CONFIG" ]] || ! grep -q ARCHMIRROR -- "$DBSCRIPTS_CONFIG"; then
msg 'usage: [V=true] DBSCRIPTS_CONFIG=/path/to/file %s' "${0##*/}"
exit $EXIT_INVALIDARGUMENT
fi
local config_file
config_file="$(dirname "$(readlink -e "$0")")/config"
source "$config_file"
local ret=0 varname varref
for varname in PKGEXTS FTP_BASE PKGPOOL SRCPOOL; do
if [[ -z ${!varname:-} ]] || is_array "$varname"; then
print "Configure '%s' as a non-empty string in %q (or %q):" "$varname" "$config_file" "$LOCAL_CONFIG"
ret=$EXIT_NOTCONFIGURED
fi
done
for varname in ARCHMIRROR ARCHPATH; do # optional: ARCHPKGPOOL ARCHSRCPOOL
if [[ -z ${!varname:-} ]] || is_array "$varname"; then
print "Configure '%s' as a non-empty string in DBSCRIPTS_CONFIG=%q (did you set DBSCRIPTS_CONFIG correctly?):" "$varname" "$LOCAL_CONFIG"
ret=$EXIT_NOTCONFIGURED
fi
done
for varname in ARCHTAGS; do # optional: INHERIT
declare -n varref="$varname"
if (( ${#varref[*]} == 0 )) || ! is_array "$varname"; then
print "Configure '%s' as a non-empty array in DBSCRIPTS_CONFIG=%q (did you set DBSCRIPTS_CONFIG correctly?):" "$varname" "$LOCAL_CONFIG"
ret=$EXIT_NOTCONFIGURED
fi
done
WORKDIR=$(mktemp -dt "${0##*/}.XXXXXXXXXX")
readonly WORKDIR
trap "rm -rf -- ${WORKDIR@Q}" EXIT
##############################################################
# 1. Fetch package info #
##############################################################
# Get the blacklisted packages
libreblacklist update
# Sync the repos databases
msg 'Downloading .db and .files files to import'
mkdir "${WORKDIR}/rsync"
fetch_dbs "${ARCHMIRROR}/" "${WORKDIR}/rsync"
##############################################################
# 2. Figure out what we want #
##############################################################
mkdir "${WORKDIR}"/{old,new,dif}
local _tag _repo _arch db_file
for _tag in "${ARCHTAGS[@]}"; do
_repo=${_tag%-*}
_arch=${_tag##*-}
# FIXME: this should use db-functions to lock the
# repos while we read them.
db_file="${FTP_BASE}/${_repo}/os/${_arch}/${_repo}.db"
db_list_pkgs "$db_file" > "${WORKDIR}/old/${_tag}.txt"
db_file="${WORKDIR}/rsync/$(get_repo_dir "${_repo}" "${_arch}")/${_repo}.db"
db_list_pkgs "$db_file" | filter_blacklisted > "${WORKDIR}/new/${_tag}.txt"
done
# We now have ${WORKDIR}/old/ describing the way the repos
# are, and ${WORKDIR}/new/ describing the way we want them to
# be. We now create ${WORKDIR}/dif/ describing how to get
# from point A to point B.
cat "${WORKDIR}"/old/*-*.txt | sort -u > "${WORKDIR}/old/all.txt"
# db-move <repo-from> <repo-to> <pkgname|pkgbase> ...
#
# db-move doesn't allow us to limit the operation to a
# specific arch, but the DBSCRIPTS_CONFIG will limit what
# arches it applies to, and we currently only import 1 arch
# from each upstream.
local tag_from tag_to
for tag_from in "${ARCHTAGS[@]}"; do
arch_from=${tag_from##*-}
for tag_to in "${ARCHTAGS[@]}"; do
arch_to=${tag_to##*-}
[[ $tag_from != $tag_to ]] || continue
[[ $arch_from == $arch_to ]] || continue
comm -12 \
"${WORKDIR}/old/${tag_from}.txt" \
"${WORKDIR}/new/${tag_to}.txt" \
>> "${WORKDIR}/dif/move:${tag_from}:${tag_to}.txt"
done
done
# db-update
local tag
for tag in "${ARCHTAGS[@]}"; do
comm -13 \
"${WORKDIR}/old/all.txt" \
"${WORKDIR}/new/${tag}.txt" \
> "${WORKDIR}/dif/update:${tag}.txt"
done
# db-remove <repo> <arch> <pkgname|pkgbase> ...
for tag in "${ARCHTAGS[@]}"; do
# pkgnames (that need to leave this tag) AND (haven't
# already been removed from this tag by db-move).
comm -23 \
<(cut -d' ' -f1 -- "${WORKDIR}/old/${tag}.txt" | sort -u) \
<(cut -d' ' -f1 -- "${WORKDIR}/new/${tag}.txt" "${WORKDIR}/dif/move:${tag}":*.txt | sort -u) \
> "${WORKDIR}/dif/remove:${tag}.txt"
done
##############################################################
# 3. Fetch the packages we want #
##############################################################
# For some packages, "fetch" means to create a symlink to a
# pool we INHERIT from. For others, it means to actually
# download it from arg_upstream with rsync.
for tag in "${ARCHTAGS[@]}";do
msg "Processing %s" "$tag"
repo=${tag%-*}
arch=${tag##*-}
mkdir -p -- "${WORKDIR}/staging/${repo}"
local pkgname filename pgpsig
while read -r pkgname filename pgpsig; do
local pool staged=false
for pool in "${INHERIT[@]}"; do
filepath=("${FTP_BASE}/${pool}/${filename}")
if [[ -f $filepath && ! -h $filepath ]]; then
ln -srT -- "$filepath" "${WORKDIR}/staging/${repo}/${filename}"
ln -srT -- "$filepath".sig "${WORKDIR}/staging/${repo}/${filename}".sig
staged=true
fi
done
if ! $staged; then
printf '%s\n' "$filename"{,.sig} >> "${WORKDIR}/${tag}.pkg.whitelist"
printf '%s\n' "${filename%$PKGEXTS}*.src.tar*" >> "${WORKDIR}/all.src.whitelist"
fi
done < <(
mapfile -t pkgnames < <(cut -d' ' -f1 <"${WORKDIR}/dif/update:${tag}.txt")
db_file="${WORKDIR}/rsync/$(get_repo_dir "${repo}" "${arch}")/${repo}.db"
if (( ${#pkgnames[@]} > 0 )); then
expac_file "$db_file" '%n %f %g' "${pkgnames[@]}"
fi
)
if [[ -f "${WORKDIR}/${tag}.pkg.whitelist" ]]; then
sync_pool \
"${ARCHMIRROR}/${ARCHPKGPOOL:-$(get_repo_dir "${repo}" "${arch}")}/" \
"${WORKDIR}/${tag}.pkg.whitelist" \
"${WORKDIR}/staging/${repo}/"
fi
done
if [[ -n ${ARCHSRCPOOL:-} && -f "${WORKDIR}/all.src.whitelist" ]]; then
sync_pool \
"${ARCHMIRROR}/${ARCHSRCPOOL}/" \
"${WORKDIR}/all.src.whitelist" \
"${WORKDIR}/staging/${SRCPOOL}/"
fi
##############################################################
# 4. Modify the repos #
##############################################################
msg "Modifying the actual repos"
# db-move
msg2 'Step 1 of 3: db-move'
for tag_from in "${ARCHTAGS[@]}"; do
repo_from=${tag_from%-*}
arch_from=${tag_from##*-}
for tag_to in "${ARCHTAGS[@]}"; do
repo_to=${tag_to%-*}
arch_to=${tag_to##*-}
[[ $tag_from != $tag_to ]] || continue
[[ $arch_from == $arch_to ]] || continue
plain '%s -> %s' "$tag_from" "$tag_to"
< "${WORKDIR}/dif/move:${tag_from}:${tag_to}.txt" \
cut -d' ' -f1 | \
sed 's/^/pkgname=/' | \
xargs -r -d $'\n' db-move "$repo_from" "$repo_to" |& \
indent
done
done
# db-update
msg2 'Step 2 of 3: db-update'
STAGING=${WORKDIR}/staging db-update |& indent
# db-remove
msg2 'Step 3 of 3: db-remove'
for tag in "${ARCHTAGS[@]}"; do
repo=${tag%-*}
arch=${tag##*-}
plain '%s' "$tag"
< "${WORKDIR}/dif/remove:${tag}.txt" \
cut -d' ' -f1 | \
sed 's/^/pkgname=/' | \
xargs -r -d $'\n' db-remove "$repo" "$arch" |& \
indent
done
}
main "$@"
|