]>
Commit | Line | Data |
---|---|---|
71d3a659 SG |
1 | #!/bin/sh |
2 | ||
3 | # Client script for LXC container images. | |
4 | # | |
5 | # Copyright © 2014 Stéphane Graber <stgraber@ubuntu.com> | |
6 | # | |
7 | # This library is free software; you can redistribute it and/or | |
8 | # modify it under the terms of the GNU Lesser General Public | |
9 | # License as published by the Free Software Foundation; either | |
10 | # version 2.1 of the License, or (at your option) any later version. | |
11 | ||
12 | # This library is distributed in the hope that it will be useful, | |
13 | # but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
15 | # Lesser General Public License for more details. | |
16 | ||
17 | # You should have received a copy of the GNU Lesser General Public | |
18 | # License along with this library; if not, write to the Free Software | |
19 | # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 | |
20 | # USA | |
21 | ||
22 | set -eu | |
23 | ||
71d3a659 | 24 | LOCALSTATEDIR="@LOCALSTATEDIR@" |
f74e080c SG |
25 | LXC_HOOK_DIR="@LXCHOOKDIR@" |
26 | LXC_TEMPLATE_CONFIG="@LXCTEMPLATECONFIG@" | |
71d3a659 SG |
27 | |
28 | # Defaults | |
71d3a659 | 29 | DOWNLOAD_ARCH= |
f74e080c | 30 | DOWNLOAD_BUILD= |
3ab18243 | 31 | DOWNLOAD_COMPAT_LEVEL=4 |
f74e080c | 32 | DOWNLOAD_DIST= |
71d3a659 | 33 | DOWNLOAD_FLUSH_CACHE="false" |
41670b35 | 34 | DOWNLOAD_FORCE_CACHE="false" |
f74e080c | 35 | DOWNLOAD_INTERACTIVE="false" |
dd2dbcb9 | 36 | DOWNLOAD_KEYID="0xE7FB0CAEC8173D669066514CBAEFF88C22F6E216" |
f74e080c | 37 | DOWNLOAD_LIST_IMAGES="false" |
71d3a659 | 38 | DOWNLOAD_MODE="system" |
b0f0932a | 39 | DOWNLOAD_READY_GPG="false" |
f74e080c SG |
40 | DOWNLOAD_RELEASE= |
41 | DOWNLOAD_SERVER="images.linuxcontainers.org" | |
42 | DOWNLOAD_SHOW_GPG_WARNING="true" | |
43 | DOWNLOAD_SHOW_HTTP_WARNING="true" | |
44 | DOWNLOAD_TARGET="system" | |
45 | DOWNLOAD_URL= | |
46 | DOWNLOAD_USE_CACHE="false" | |
47 | DOWNLOAD_VALIDATE="true" | |
48 | DOWNLOAD_VARIANT="default" | |
71d3a659 | 49 | |
f74e080c SG |
50 | LXC_MAPPED_GID= |
51 | LXC_MAPPED_UID= | |
71d3a659 SG |
52 | LXC_NAME= |
53 | LXC_PATH= | |
54 | LXC_ROOTFS= | |
71d3a659 | 55 | |
a9a53b50 | 56 | if [ -z "${DOWNLOAD_KEYSERVER:-}" ]; then |
a6a7c7d1 TK |
57 | DOWNLOAD_KEYSERVER="hkp://pool.sks-keyservers.net" |
58 | ||
59 | # Deal with GPG over http proxy | |
60 | if [ -n "${http_proxy:-}" ]; then | |
61 | DOWNLOAD_KEYSERVER="hkp://p80.pool.sks-keyservers.net:80" | |
62 | fi | |
4eb706b3 SG |
63 | fi |
64 | ||
207bf0e4 SG |
65 | # Make sure the usual locations are in PATH |
66 | export PATH=$PATH:/usr/sbin:/usr/bin:/sbin:/bin | |
67 | ||
71d3a659 SG |
68 | # Some useful functions |
69 | cleanup() { | |
70 | if [ -d "$DOWNLOAD_TEMP" ]; then | |
71 | rm -Rf $DOWNLOAD_TEMP | |
72 | fi | |
73 | } | |
74 | ||
acabe1fa SG |
75 | wget_wrapper() { |
76 | for i in $(seq 3); do | |
77 | if wget $@; then | |
78 | return 0 | |
79 | fi | |
80 | done | |
81 | ||
82 | return 1 | |
83 | } | |
84 | ||
71d3a659 | 85 | download_file() { |
acabe1fa SG |
86 | if ! wget_wrapper -T 30 -q https://${DOWNLOAD_SERVER}/$1 -O $2 >/dev/null 2>&1; then |
87 | if ! wget_wrapper -T 30 -q http://${DOWNLOAD_SERVER}/$1 -O $2 >/dev/null 2>&1; then | |
71d3a659 SG |
88 | if [ "$3" = "noexit" ]; then |
89 | return 1 | |
90 | else | |
fad96766 | 91 | echo "ERROR: Failed to download http://${DOWNLOAD_SERVER}/$1" 1>&2 |
71d3a659 SG |
92 | exit 1 |
93 | fi | |
94 | elif [ "$DOWNLOAD_SHOW_HTTP_WARNING" = "true" ]; then | |
95 | DOWNLOAD_SHOW_HTTP_WARNING="false" | |
96 | echo "WARNING: Failed to download the file over HTTPs." 1>&2 | |
97 | echo -n " The file was instead download over HTTP. " 1>&2 | |
98 | echo "A server replay attack may be possible!" 1>&2 | |
99 | fi | |
100 | fi | |
101 | } | |
102 | ||
fad96766 | 103 | download_sig() { |
33aa351a SG |
104 | if ! download_file $1 $2 noexit; then |
105 | if [ "$DOWNLOAD_VALIDATE" = "true" ]; then | |
106 | if [ "$3" = "normal" ]; then | |
107 | echo "ERROR: Failed to download http://${DOWNLOAD_SERVER}/$1" 1>&2 | |
108 | exit 1 | |
109 | else | |
110 | return 1 | |
111 | fi | |
112 | else | |
113 | return 0 | |
114 | fi | |
fad96766 DE |
115 | fi |
116 | } | |
117 | ||
71d3a659 SG |
118 | gpg_setup() { |
119 | if [ "$DOWNLOAD_VALIDATE" = "false" ]; then | |
120 | return | |
121 | fi | |
122 | ||
b0f0932a SG |
123 | if [ "$DOWNLOAD_READY_GPG" = "true" ]; then |
124 | return | |
125 | fi | |
126 | ||
71d3a659 SG |
127 | echo "Setting up the GPG keyring" |
128 | ||
129 | mkdir -p "$DOWNLOAD_TEMP/gpg" | |
130 | chmod 700 "$DOWNLOAD_TEMP/gpg" | |
131 | export GNUPGHOME="$DOWNLOAD_TEMP/gpg" | |
809a1539 SG |
132 | |
133 | success= | |
134 | for i in $(seq 3); do | |
135 | if gpg --keyserver $DOWNLOAD_KEYSERVER \ | |
71d3a659 | 136 | --recv-keys ${DOWNLOAD_KEYID} >/dev/null 2>&1; then |
809a1539 SG |
137 | success=1 |
138 | break | |
139 | fi | |
140 | done | |
141 | ||
142 | if [ -z "$success" ]; then | |
71d3a659 SG |
143 | echo "ERROR: Unable to fetch GPG key from keyserver." |
144 | exit 1 | |
145 | fi | |
b0f0932a SG |
146 | |
147 | DOWNLOAD_READY_GPG="true" | |
71d3a659 SG |
148 | } |
149 | ||
150 | gpg_validate() { | |
151 | if [ "$DOWNLOAD_VALIDATE" = "false" ]; then | |
152 | if [ "$DOWNLOAD_SHOW_GPG_WARNING" = "true" ]; then | |
153 | echo "WARNING: Running without gpg validation!" 1>&2 | |
154 | fi | |
155 | DOWNLOAD_SHOW_GPG_WARNING="false" | |
156 | return 0 | |
157 | fi | |
158 | ||
159 | if ! gpg --verify $1 >/dev/zero 2>&1; then | |
160 | echo "ERROR: Invalid signature for $1" 1>&2 | |
161 | exit 1 | |
162 | fi | |
163 | } | |
164 | ||
165 | in_userns() { | |
166 | [ -e /proc/self/uid_map ] || { echo no; return; } | |
9f15e86a SG |
167 | while read line; do |
168 | fields=$(echo $line | awk '{ print $1 " " $2 " " $3 }') | |
169 | [ "$fields" = "0 0 4294967295" ] && { echo no; return; } || true | |
170 | echo $fields | grep -q " 0 1$" && { echo userns-root; return; } || true | |
171 | done < /proc/self/uid_map | |
a1b6244e | 172 | |
f74e080c SG |
173 | [ "$(cat /proc/self/uid_map)" = "$(cat /proc/1/uid_map)" ] && \ |
174 | { echo userns-root; return; } | |
71d3a659 SG |
175 | echo yes |
176 | } | |
177 | ||
178 | relevant_file() { | |
179 | FILE_PATH="${LXC_CACHE_PATH}/$1" | |
180 | if [ -e "${FILE_PATH}-${DOWNLOAD_MODE}" ]; then | |
181 | FILE_PATH="${FILE_PATH}-${DOWNLOAD_MODE}" | |
182 | fi | |
183 | if [ -e "$FILE_PATH.${DOWNLOAD_COMPAT_LEVEL}" ]; then | |
184 | FILE_PATH="${FILE_PATH}.${DOWNLOAD_COMPAT_LEVEL}" | |
185 | fi | |
186 | ||
187 | echo $FILE_PATH | |
188 | } | |
189 | ||
190 | usage() { | |
191 | cat <<EOF | |
192 | LXC container image downloader | |
193 | ||
7d540a26 MA |
194 | Special arguments: |
195 | [ -h | --help ]: Print this help message and exit. | |
196 | [ -l | --list ]: List all available images and exit. | |
197 | ||
71d3a659 SG |
198 | Required arguments: |
199 | [ -d | --dist <distribution> ]: The name of the distribution | |
200 | [ -r | --release <release> ]: Release name/version | |
201 | [ -a | --arch <architecture> ]: Architecture of the container | |
71d3a659 SG |
202 | |
203 | Optional arguments: | |
204 | [ --variant <variant> ]: Variant of the image (default: "default") | |
205 | [ --server <server> ]: Image server (default: "images.linuxcontainers.org") | |
206 | [ --keyid <keyid> ]: GPG keyid (default: 0x...) | |
d2e5c5d1 | 207 | [ --keyserver <keyserver> ]: GPG keyserver to use. Environment variable: DOWNLOAD_KEYSERVER |
71d3a659 SG |
208 | [ --no-validate ]: Disable GPG validation (not recommended) |
209 | [ --flush-cache ]: Flush the local copy (if present) | |
e145b7bb | 210 | [ --force-cache ]: Force the use of the local copy even if expired |
71d3a659 SG |
211 | |
212 | LXC internal arguments (do not pass manually!): | |
213 | [ --name <name> ]: The container name | |
214 | [ --path <path> ]: The path to the container | |
215 | [ --rootfs <rootfs> ]: The path to the container's rootfs | |
2133f58c SH |
216 | [ --mapped-uid <map> ]: A uid map (user namespaces) |
217 | [ --mapped-gid <map> ]: A gid map (user namespaces) | |
d2e5c5d1 TK |
218 | |
219 | Environment Variables: | |
220 | DOWNLOAD_KEYSERVER : The URL of the key server to use, instead of the default. | |
221 | Can be further overridden by using optional argument --keyserver | |
222 | ||
71d3a659 SG |
223 | EOF |
224 | return 0 | |
225 | } | |
226 | ||
10a5fab6 | 227 | options=$(getopt -o d:r:a:hl -l dist:,release:,arch:,help,list,variant:,\ |
3cd988cc | 228 | server:,keyid:,keyserver:,no-validate,flush-cache,force-cache,name:,path:,\ |
2133f58c | 229 | rootfs:,mapped-uid:,mapped-gid: -- "$@") |
71d3a659 SG |
230 | |
231 | if [ $? -ne 0 ]; then | |
232 | usage | |
233 | exit 1 | |
234 | fi | |
235 | eval set -- "$options" | |
236 | ||
237 | while :; do | |
238 | case "$1" in | |
10a5fab6 SG |
239 | -h|--help) usage && exit 1;; |
240 | -l|--list) DOWNLOAD_LIST_IMAGES="true"; shift 1;; | |
71d3a659 SG |
241 | -d|--dist) DOWNLOAD_DIST=$2; shift 2;; |
242 | -r|--release) DOWNLOAD_RELEASE=$2; shift 2;; | |
243 | -a|--arch) DOWNLOAD_ARCH=$2; shift 2;; | |
244 | --variant) DOWNLOAD_VARIANT=$2; shift 2;; | |
245 | --server) DOWNLOAD_SERVER=$2; shift 2;; | |
246 | --keyid) DOWNLOAD_KEYID=$2; shift 2;; | |
3cd988cc | 247 | --keyserver) DOWNLOAD_KEYSERVER=$2; shift 2;; |
71d3a659 SG |
248 | --no-validate) DOWNLOAD_VALIDATE="false"; shift 1;; |
249 | --flush-cache) DOWNLOAD_FLUSH_CACHE="true"; shift 1;; | |
9accc2ef | 250 | --force-cache) DOWNLOAD_FORCE_CACHE="true"; shift 1;; |
71d3a659 SG |
251 | --name) LXC_NAME=$2; shift 2;; |
252 | --path) LXC_PATH=$2; shift 2;; | |
253 | --rootfs) LXC_ROOTFS=$2; shift 2;; | |
254 | --mapped-uid) LXC_MAPPED_UID=$2; shift 2;; | |
2133f58c | 255 | --mapped-gid) LXC_MAPPED_GID=$2; shift 2;; |
71d3a659 SG |
256 | *) break;; |
257 | esac | |
258 | done | |
259 | ||
260 | # Check for required binaries | |
261 | for bin in tar xz wget; do | |
262 | if ! type $bin >/dev/null 2>&1; then | |
263 | echo "ERROR: Missing required tool: $bin" 1>&2 | |
264 | exit 1 | |
265 | fi | |
266 | done | |
267 | ||
268 | # Check for GPG | |
269 | if [ "$DOWNLOAD_VALIDATE" = "true" ]; then | |
270 | if ! type gpg >/dev/null 2>&1; then | |
271 | echo "ERROR: Missing recommended tool: gpg" 1>&2 | |
272 | echo "You can workaround this by using --no-validate." 1>&2 | |
273 | exit 1 | |
274 | fi | |
275 | fi | |
276 | ||
277 | # Check that we have all variables we need | |
278 | if [ -z "$LXC_NAME" ] || [ -z "$LXC_PATH" ] || [ -z "$LXC_ROOTFS" ]; then | |
308f4f39 MA |
279 | if [ "$DOWNLOAD_LIST_IMAGES" != "true" ]; then |
280 | echo "ERROR: Not running through LXC." 1>&2 | |
281 | exit 1 | |
282 | fi | |
71d3a659 SG |
283 | fi |
284 | ||
f74e080c SG |
285 | USERNS=$(in_userns) |
286 | ||
287 | if [ "$USERNS" != "no" ]; then | |
288 | if [ "$USERNS" = "yes" ]; then | |
289 | if [ -z "$LXC_MAPPED_UID" ] || [ "$LXC_MAPPED_UID" = "-1" ]; then | |
290 | echo "ERROR: In a user namespace without a map." 1>&2 | |
291 | exit 1 | |
292 | fi | |
293 | DOWNLOAD_MODE="user" | |
294 | DOWNLOAD_TARGET="user" | |
295 | else | |
296 | DOWNLOAD_MODE="user" | |
297 | DOWNLOAD_TARGET="system" | |
71d3a659 | 298 | fi |
71d3a659 SG |
299 | fi |
300 | ||
b0f0932a SG |
301 | if [ -z "$DOWNLOAD_DIST" ] || [ -z "$DOWNLOAD_RELEASE" ] || \ |
302 | [ -z "$DOWNLOAD_ARCH" ]; then | |
303 | DOWNLOAD_INTERACTIVE="true" | |
71d3a659 SG |
304 | fi |
305 | ||
306 | # Trap all exit signals | |
307 | trap cleanup EXIT HUP INT TERM | |
843a5874 SG |
308 | |
309 | if ! type mktemp >/dev/null 2>&1; then | |
310 | DOWNLOAD_TEMP=/tmp/lxc-download.$$ | |
311 | mkdir -p $DOWNLOAD_TEMP | |
312 | else | |
313 | DOWNLOAD_TEMP=$(mktemp -d) | |
314 | fi | |
71d3a659 | 315 | |
10a5fab6 | 316 | # Simply list images |
b0f0932a SG |
317 | if [ "$DOWNLOAD_LIST_IMAGES" = "true" ] || \ |
318 | [ "$DOWNLOAD_INTERACTIVE" = "true" ]; then | |
10a5fab6 SG |
319 | # Initialize GPG |
320 | gpg_setup | |
321 | ||
322 | # Grab the index | |
323 | DOWNLOAD_INDEX_PATH=/meta/1.0/index-${DOWNLOAD_MODE} | |
324 | ||
325 | echo "Downloading the image index" | |
326 | if ! download_file ${DOWNLOAD_INDEX_PATH}.${DOWNLOAD_COMPAT_LEVEL} \ | |
327 | ${DOWNLOAD_TEMP}/index noexit || | |
328 | ! download_sig ${DOWNLOAD_INDEX_PATH}.${DOWNLOAD_COMPAT_LEVEL}.asc \ | |
329 | ${DOWNLOAD_TEMP}/index.asc noexit; then | |
330 | download_file ${DOWNLOAD_INDEX_PATH} ${DOWNLOAD_TEMP}/index normal | |
331 | download_sig ${DOWNLOAD_INDEX_PATH}.asc \ | |
332 | ${DOWNLOAD_TEMP}/index.asc normal | |
333 | fi | |
334 | ||
335 | gpg_validate ${DOWNLOAD_TEMP}/index.asc | |
336 | ||
337 | # Parse it | |
338 | echo "" | |
339 | echo "---" | |
96283b54 | 340 | printf "DIST\tRELEASE\tARCH\tVARIANT\tBUILD\n" |
10a5fab6 SG |
341 | echo "---" |
342 | while read line; do | |
343 | # Basic CSV parser | |
344 | OLD_IFS=$IFS | |
345 | IFS=";" | |
346 | set -- $line | |
347 | IFS=$OLD_IFS | |
348 | ||
349 | [ -n "$DOWNLOAD_DIST" ] && [ "$1" != "$DOWNLOAD_DIST" ] && continue | |
350 | [ -n "$DOWNLOAD_RELEASE" ] && [ "$2" != "$DOWNLOAD_RELEASE" ] && continue | |
351 | [ -n "$DOWNLOAD_ARCH" ] && [ "$3" != "$DOWNLOAD_ARCH" ] && continue | |
352 | [ -n "$DOWNLOAD_VARIANT" ] && [ "$4" != "$DOWNLOAD_VARIANT" ] && continue | |
353 | [ -z "$5" ] || [ -z "$6" ] && continue | |
354 | ||
96283b54 | 355 | printf "$1\t$2\t$3\t$4\t$5\n" |
10a5fab6 SG |
356 | done < ${DOWNLOAD_TEMP}/index |
357 | echo "---" | |
358 | ||
b0f0932a SG |
359 | if [ "$DOWNLOAD_LIST_IMAGES" = "true" ]; then |
360 | exit 1 | |
361 | fi | |
362 | ||
363 | # Interactive mode | |
364 | echo "" | |
365 | ||
366 | if [ -z "$DOWNLOAD_DIST" ]; then | |
367 | echo -n "Distribution: " | |
368 | read DOWNLOAD_DIST | |
369 | fi | |
370 | ||
371 | if [ -z "$DOWNLOAD_RELEASE" ]; then | |
372 | echo -n "Release: " | |
373 | read DOWNLOAD_RELEASE | |
374 | fi | |
375 | ||
376 | if [ -z "$DOWNLOAD_ARCH" ]; then | |
377 | echo -n "Architecture: " | |
378 | read DOWNLOAD_ARCH | |
379 | fi | |
380 | ||
381 | echo "" | |
10a5fab6 SG |
382 | fi |
383 | ||
71d3a659 | 384 | # Setup the cache |
f74e080c | 385 | if [ "$DOWNLOAD_TARGET" = "system" ]; then |
b56661fe | 386 | LXC_CACHE_BASE="$LOCALSTATEDIR/cache/lxc/" |
71d3a659 SG |
387 | else |
388 | LXC_CACHE_BASE="$HOME/.cache/lxc/" | |
71d3a659 SG |
389 | fi |
390 | ||
6dc6f80b KC |
391 | # Allow the setting of the LXC_CACHE_PATH with the usage of environment variables. |
392 | LXC_CACHE_PATH=${LXC_CACHE_PATH:-"$LXC_CACHE_BASE"} | |
393 | LXC_CACHE_PATH=$LXC_CACHE_PATH/download/$DOWNLOAD_DIST | |
b56661fe SG |
394 | LXC_CACHE_PATH="$LXC_CACHE_PATH/$DOWNLOAD_RELEASE/$DOWNLOAD_ARCH/" |
395 | LXC_CACHE_PATH="$LXC_CACHE_PATH/$DOWNLOAD_VARIANT" | |
396 | ||
71d3a659 SG |
397 | if [ -d "$LXC_CACHE_PATH" ]; then |
398 | if [ "$DOWNLOAD_FLUSH_CACHE" = "true" ]; then | |
399 | echo "Flushing the cache..." | |
400 | rm -Rf $LXC_CACHE_PATH | |
9accc2ef SG |
401 | elif [ "$DOWNLOAD_FORCE_CACHE" = "true" ]; then |
402 | DOWNLOAD_USE_CACHE="true" | |
71d3a659 SG |
403 | else |
404 | DOWNLOAD_USE_CACHE="true" | |
405 | if [ -e "$(relevant_file expiry)" ]; then | |
406 | if [ "$(cat $(relevant_file expiry))" -lt $(date +%s) ]; then | |
407 | echo "The cached copy has expired, re-downloading..." | |
408 | DOWNLOAD_USE_CACHE="false" | |
71d3a659 SG |
409 | fi |
410 | fi | |
411 | fi | |
412 | fi | |
413 | ||
414 | # Download what's needed | |
415 | if [ "$DOWNLOAD_USE_CACHE" = "false" ]; then | |
416 | # Initialize GPG | |
417 | gpg_setup | |
418 | ||
419 | # Grab the index | |
420 | DOWNLOAD_INDEX_PATH=/meta/1.0/index-${DOWNLOAD_MODE} | |
421 | ||
422 | echo "Downloading the image index" | |
423 | if ! download_file ${DOWNLOAD_INDEX_PATH}.${DOWNLOAD_COMPAT_LEVEL} \ | |
424 | ${DOWNLOAD_TEMP}/index noexit || | |
33aa351a | 425 | ! download_sig ${DOWNLOAD_INDEX_PATH}.${DOWNLOAD_COMPAT_LEVEL}.asc \ |
71d3a659 SG |
426 | ${DOWNLOAD_TEMP}/index.asc noexit; then |
427 | download_file ${DOWNLOAD_INDEX_PATH} ${DOWNLOAD_TEMP}/index normal | |
fad96766 | 428 | download_sig ${DOWNLOAD_INDEX_PATH}.asc \ |
33aa351a | 429 | ${DOWNLOAD_TEMP}/index.asc normal |
71d3a659 SG |
430 | fi |
431 | ||
432 | gpg_validate ${DOWNLOAD_TEMP}/index.asc | |
433 | ||
434 | # Parse it | |
435 | while read line; do | |
436 | # Basic CSV parser | |
437 | OLD_IFS=$IFS | |
438 | IFS=";" | |
439 | set -- $line | |
440 | IFS=$OLD_IFS | |
441 | ||
442 | if [ "$1" != "$DOWNLOAD_DIST" ] || \ | |
443 | [ "$2" != "$DOWNLOAD_RELEASE" ] || \ | |
444 | [ "$3" != "$DOWNLOAD_ARCH" ] || \ | |
445 | [ "$4" != "$DOWNLOAD_VARIANT" ] || \ | |
446 | [ -z "$6" ]; then | |
447 | continue | |
448 | fi | |
449 | ||
9accc2ef | 450 | DOWNLOAD_BUILD=$5 |
71d3a659 SG |
451 | DOWNLOAD_URL=$6 |
452 | break | |
453 | done < ${DOWNLOAD_TEMP}/index | |
454 | ||
455 | if [ -z "$DOWNLOAD_URL" ]; then | |
456 | echo "ERROR: Couldn't find a matching image." 1>&1 | |
457 | exit 1 | |
458 | fi | |
459 | ||
9accc2ef SG |
460 | if [ -d "$LXC_CACHE_PATH" ] && [ -f "$LXC_CACHE_PATH/build_id" ] && \ |
461 | [ "$(cat $LXC_CACHE_PATH/build_id)" = "$DOWNLOAD_BUILD" ]; then | |
462 | echo "The cache is already up to date." | |
463 | echo "Using image from local cache" | |
464 | else | |
465 | # Download the actual files | |
466 | echo "Downloading the rootfs" | |
467 | download_file $DOWNLOAD_URL/rootfs.tar.xz \ | |
468 | ${DOWNLOAD_TEMP}/rootfs.tar.xz normal | |
469 | download_sig $DOWNLOAD_URL/rootfs.tar.xz.asc \ | |
470 | ${DOWNLOAD_TEMP}/rootfs.tar.xz.asc normal | |
471 | gpg_validate ${DOWNLOAD_TEMP}/rootfs.tar.xz.asc | |
472 | ||
473 | echo "Downloading the metadata" | |
474 | download_file $DOWNLOAD_URL/meta.tar.xz \ | |
475 | ${DOWNLOAD_TEMP}/meta.tar.xz normal | |
476 | download_sig $DOWNLOAD_URL/meta.tar.xz.asc \ | |
477 | ${DOWNLOAD_TEMP}/meta.tar.xz.asc normal | |
478 | gpg_validate ${DOWNLOAD_TEMP}/meta.tar.xz.asc | |
479 | ||
480 | if [ -d $LXC_CACHE_PATH ]; then | |
481 | rm -Rf $LXC_CACHE_PATH | |
482 | fi | |
483 | mkdir -p $LXC_CACHE_PATH | |
484 | mv ${DOWNLOAD_TEMP}/rootfs.tar.xz $LXC_CACHE_PATH | |
485 | if ! tar Jxf ${DOWNLOAD_TEMP}/meta.tar.xz -C $LXC_CACHE_PATH; then | |
486 | echo "ERROR: Invalid rootfs tarball." 2>&1 | |
487 | exit 1 | |
488 | fi | |
71d3a659 | 489 | |
9accc2ef SG |
490 | echo $DOWNLOAD_BUILD > $LXC_CACHE_PATH/build_id |
491 | ||
492 | if [ -n "$LXC_MAPPED_UID" ] && [ "$LXC_MAPPED_UID" != "-1" ]; then | |
0d656b05 | 493 | chown -R $LXC_MAPPED_UID $LXC_CACHE_BASE >/dev/null 2>&1 || true |
9accc2ef | 494 | fi |
2133f58c SH |
495 | if [ -n "$LXC_MAPPED_GID" ] && [ "$LXC_MAPPED_GID" != "-1" ]; then |
496 | chgrp -R $LXC_MAPPED_GID $LXC_CACHE_BASE >/dev/null 2>&1 || true | |
497 | fi | |
9accc2ef | 498 | echo "The image cache is now ready" |
71d3a659 | 499 | fi |
71d3a659 SG |
500 | else |
501 | echo "Using image from local cache" | |
502 | fi | |
503 | ||
504 | # Unpack the rootfs | |
505 | echo "Unpacking the rootfs" | |
fecf101c SG |
506 | |
507 | EXCLUDES="" | |
508 | excludelist=$(relevant_file excludes) | |
509 | if [ -f "${excludelist}" ]; then | |
510 | while read line; do | |
511 | EXCLUDES="$EXCLUDES --exclude=$line" | |
512 | done < $excludelist | |
71d3a659 SG |
513 | fi |
514 | ||
fecf101c SG |
515 | tar --anchored ${EXCLUDES} --numeric-owner -xpJf \ |
516 | ${LXC_CACHE_PATH}/rootfs.tar.xz -C ${LXC_ROOTFS} | |
517 | ||
518 | mkdir -p ${LXC_ROOTFS}/dev/pts/ | |
519 | ||
71d3a659 SG |
520 | # Setup the configuration |
521 | configfile=$(relevant_file config) | |
522 | fstab=$(relevant_file fstab) | |
523 | if [ ! -e $configfile ]; then | |
524 | echo "ERROR: meta tarball is missing the configuration file" 1>&2 | |
525 | exit 1 | |
526 | fi | |
527 | ||
528 | ## Extract all the network config entries | |
7fa3f2e9 | 529 | sed -i -e "/lxc.net.0/{w ${LXC_PATH}/config-network" -e "d}" \ |
71d3a659 SG |
530 | ${LXC_PATH}/config |
531 | ||
532 | ## Extract any other config entry | |
533 | sed -i -e "/lxc./{w ${LXC_PATH}/config-auto" -e "d}" ${LXC_PATH}/config | |
534 | ||
535 | ## Append the defaults | |
536 | echo "" >> ${LXC_PATH}/config | |
537 | echo "# Distribution configuration" >> ${LXC_PATH}/config | |
538 | cat $configfile >> ${LXC_PATH}/config | |
539 | ||
540 | ## Add the container-specific config | |
541 | echo "" >> ${LXC_PATH}/config | |
542 | echo "# Container specific configuration" >> ${LXC_PATH}/config | |
543 | if [ -e "${LXC_PATH}/config-auto" ]; then | |
544 | cat ${LXC_PATH}/config-auto >> ${LXC_PATH}/config | |
545 | rm ${LXC_PATH}/config-auto | |
546 | fi | |
547 | if [ -e "$fstab" ]; then | |
548 | echo "lxc.mount = ${LXC_PATH}/fstab" >> ${LXC_PATH}/config | |
549 | fi | |
550 | echo "lxc.utsname = ${LXC_NAME}" >> ${LXC_PATH}/config | |
551 | ||
552 | ## Re-add the previously removed network config | |
553 | if [ -e "${LXC_PATH}/config-network" ]; then | |
554 | echo "" >> ${LXC_PATH}/config | |
555 | echo "# Network configuration" >> ${LXC_PATH}/config | |
556 | cat ${LXC_PATH}/config-network >> ${LXC_PATH}/config | |
557 | rm ${LXC_PATH}/config-network | |
558 | fi | |
559 | ||
560 | TEMPLATE_FILES="${LXC_PATH}/config" | |
561 | ||
562 | # Setup the fstab | |
563 | if [ -e $fstab ]; then | |
564 | cp ${fstab} ${LXC_PATH}/fstab | |
565 | TEMPLATE_FILES="$TEMPLATE_FILES ${LXC_PATH}/fstab" | |
566 | fi | |
567 | ||
568 | # Look for extra templates | |
569 | if [ -e "$(relevant_file templates)" ]; then | |
570 | while read line; do | |
571 | fullpath=${LXC_ROOTFS}/$line | |
572 | [ ! -e "$fullpath" ] && continue | |
573 | TEMPLATE_FILES="$TEMPLATE_FILES $fullpath" | |
574 | done < $(relevant_file templates) | |
575 | fi | |
576 | ||
577 | # Replace variables in all templates | |
578 | for file in $TEMPLATE_FILES; do | |
fad96766 | 579 | [ ! -f "$file" ] && continue |
71d3a659 SG |
580 | |
581 | sed -i "s#LXC_NAME#$LXC_NAME#g" $file | |
582 | sed -i "s#LXC_PATH#$LXC_PATH#g" $file | |
583 | sed -i "s#LXC_ROOTFS#$LXC_ROOTFS#g" $file | |
584 | sed -i "s#LXC_TEMPLATE_CONFIG#$LXC_TEMPLATE_CONFIG#g" $file | |
585 | sed -i "s#LXC_HOOK_DIR#$LXC_HOOK_DIR#g" $file | |
586 | done | |
587 | ||
491a01cf | 588 | # prevent mingetty from calling vhangup(2) since it fails with userns on CentOS / Oracle |
6e53ca56 SC |
589 | if [ -f ${LXC_ROOTFS}/etc/init/tty.conf ]; then |
590 | sed -i 's|mingetty|mingetty --nohangup|' ${LXC_ROOTFS}/etc/init/tty.conf | |
591 | fi | |
592 | ||
71d3a659 | 593 | if [ -n "$LXC_MAPPED_UID" ] && [ "$LXC_MAPPED_UID" != "-1" ]; then |
0d656b05 | 594 | chown $LXC_MAPPED_UID $LXC_PATH/config $LXC_PATH/fstab >/dev/null 2>&1 || true |
71d3a659 | 595 | fi |
2133f58c SH |
596 | if [ -n "$LXC_MAPPED_GID" ] && [ "$LXC_MAPPED_GID" != "-1" ]; then |
597 | chgrp $LXC_MAPPED_GID $LXC_PATH/config $LXC_PATH/fstab >/dev/null 2>&1 || true | |
598 | fi | |
71d3a659 SG |
599 | |
600 | if [ -e "$(relevant_file create-message)" ]; then | |
601 | echo "" | |
602 | echo "---" | |
603 | cat "$(relevant_file create-message)" | |
604 | fi | |
605 | ||
606 | exit 0 |