2 # No way I try to deal with a crippled sh just for POSIX foo.
4 # Copyright (C) 2011 Joerg Jaspert <joerg@debian.org>
6 # This program is free software; you can redistribute it and/or
7 # modify it under the terms of the GNU General Public License as
8 # published by the Free Software Foundation; version 2.
10 # This program is distributed in the hope that it will be useful, but
11 # WITHOUT ANY WARRANTY; without even the implied warranty of
12 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 # General Public License for more details.
15 # You should have received a copy of the GNU General Public License
16 # along with this program; if not, write to the Free Software
17 # Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
22 # make sure to only use defined variables
24 # ERR traps should be inherited from functions too.
27 # import the general variable set.
28 export SCRIPTVARS=/srv/ftp-master.debian.org/dak/config/debian/vars
33 # And use one locale, no matter what the caller has set
36 PROGRAM="buildd-add-keys"
38 # common functions are "outsourced"
39 . "${configdir}/common"
43 trap - ERR EXIT TERM HUP INT QUIT
45 for TEMPFILE in GPGSTATUS GPGLOGS GPGOUTF TEMPKEYDATA; do
47 if [ -n "${DELF}" ] && [ -f "${DELF}" ]; then
54 base="${base}/scripts/builddkeyrings"
55 INCOMING="${base}/incoming"
56 ERRORS="${base}/errors"
57 ADMINS="${base}/adminkeys.gpg"
58 STAMPFILE="${base}/updatedkeyring"
60 # Default options for our gpg calls
61 DEFGPGOPT="--no-default-keyring --batch --no-tty --no-options --exit-on-status-write-error --no-greeting"
63 if ! [ -d "${INCOMING}" ]; then
64 log "Missing incoming dir, nothing to do"
69 KEYS=$(find . -maxdepth 1 -mindepth 1 -type f -name \*.key | sed -e "s,./,," | xargs)
70 if [ -z "${KEYS}" ]; then
74 trap cleanup ERR EXIT TERM HUP INT QUIT
76 # Tell prepare-dir that there is an update and it can run
79 # Whenever something goes wrong, its put in there.
82 # We process all new files in our incoming directory
83 for file in ${KEYS}; do
85 # First we want to see if we recognize the filename. The buildd people have
86 # to follow a certain schema:
87 # architecture_builddname.YEAR-MONTH-DAY_HOURMINUTE.key
88 if [[ $file =~ (.*)_(.*).([0-9]{4}-[0-9]{2}-[0-9]{2}_[0-9]{2}[0-9]{2}).key ]]; then
89 ARCH=${BASH_REMATCH[1]}
90 BUILDD=${BASH_REMATCH[2]}
91 # Right now timestamp is unused
92 TIMESTAMP=${BASH_REMATCH[3]}
94 log "Unknown file ${file}, not processing"
95 mv "${INCOMING}/${file}" "${ERRORS}/unknown.${file}.$(date -Is)"
99 # Do we know the architecture?
101 for carch in ${archs}; do
102 if [ "${ARCH}" == "${carch}" ]; then
103 log "Known arch ${ARCH}, buildd ${BUILDD}"
109 if [ ${found} -eq 0 ]; then
110 log "Unknown architecture ${ARCH}"
111 mv "${INCOMING}/${file}" "${ERRORS}/unknownarch.${file}.$(date -Is)"
115 # If we did have a file with this name already somethings wrong
116 if [ -f "${base}/${ARCH}/${file}" ]; then
117 log "Already processed this file"
118 mv "${INCOMING}/${file}" "${ERRORS}/duplicate.${file}.$(date -Is)"
122 # Where we want the status-fd from gpgv turn up
123 GPGSTATUS=$(mktemp -p "${TMPDIR}" GPGSTATUS.XXXXXX)
124 # Same for the loggger-fd
125 GPGLOGS=$(mktemp -p "${TMPDIR}" GPGLOGS.XXXXXX)
126 # And "decrypt" gives us output, the key without the pgp sig around it
127 GPGOUTF=$(mktemp -p "${TMPDIR}" GPGOUTF.XXXXXX)
129 # Open the filehandles, assigning them to the two files, so we can let gpg use them
130 exec 4> "${GPGSTATUS}"
133 # So lets run gpg, status/logger into the two files, to "decrypt" the keyfile
134 if ! gpg ${DEFGPGOPT} --keyring "${ADMINS}" --status-fd 4 --logger-fd 5 --decrypt "${INCOMING}/${file}" > "${GPGOUTF}"; then
136 log "gpg returned with ${ret}, not adding key from file ${file}"
138 mv "${INCOMING}/${file}" "${ERRORS}/gpgerror.${file}.${DATE}"
139 mv "${GPGSTATUS}" "${ERRORS}/gpgerror.${file}.gpgstatus.${DATE}"
140 mv "${GPGLOGS}" "${ERRORS}/gpgerror.${file}.gpglogs.${DATE}"
145 # Read in the status output
146 GPGSTAT=$(cat "${GPGSTATUS}")
147 # And check if we like the sig. It has to be both, GOODISG and VALIDSIG or we don't accept it
148 if [[ ${GPGSTAT} =~ "GOODSIG" ]] && [[ ${GPGSTAT} =~ "VALIDSIG" ]]; then
149 log "Signature for ${file} accepted"
151 log "We are missing one of GOODSIG or VALIDSIG"
153 mv "${INCOMING}/${file}" "${ERRORS}/badsig.${file}.${DATE}"
154 mv "${GPGSTATUS}" "${ERRORS}/badsig.${file}.gpgstatus.${DATE}"
155 mv "${GPGLOGS}" "${ERRORS}/badsig.${file}.gpglogs.${DATE}"
160 # So at this point we know we accepted the signature of the file as valid,
161 # that is it is from a key allowed for this architecture. Which only
162 # leaves us with the task of checking if the key fulfills the requirements
163 # before we add it to the architectures keyring.
165 # Those currently are:
166 # - keysize 4096 or larger
167 # - RSA key, no encryption capability
168 # - UID matching "buildd autosigning key BUILDDNAME <buildd_ARCH-BUILDDNAME@buildd.debian.org>
169 # - expire within a 120 days
170 # - maximum 2 keys per architecture and buildd
172 TEMPKEYDATA=$(mktemp -p "${TMPDIR}" BDKEYS.XXXXXX)
174 gpg ${DEFGPGOPT} --with-colons "${GPGOUTF}" > "${TEMPKEYDATA}"
176 # Read in the TEMPKEYDATAFILE, but avoid using a subshell like a
177 # while read line otherwise would do
178 exec 4<> "${TEMPKEYDATA}"
180 #pub:-:4096:1:FAB983612A6554FA:2011-03-24:2011-07-22::-:buildd autosigning key poulenc <buildd_powerpc-poulenc@buildd.debian.org>:
182 # Of course this sucky gpg crapshit of an "interface" does give you different things depending on how people
183 # created their keys. And of course the buildd people created the test keys differently to what they now do
184 # which just means extra work for nothing. So as they now do other steps, the thing we get back suddenly looks like
186 #pub:-:4096:1:99595DC7865BEAD2:2011-03-26:2011-07-24::-:
187 #uid:::::::::buildd autosigning key corelli <buildd_mips-corelli@buildd.debian.org>:
189 # Besides fiddling out the data we need to check later, this regex also check:
190 # - the keytype (:1:, 1 there means RSA)
192 # - that the key does have an expiration date (or it wont match, the second date
193 # field would be empty
194 regex="^pub:-:([0-9]{4}):1:([0-9A-F]{16}):([0-9]{4}-[0-9]{2}-[0-9]{2}):([0-9]{4}-[0-9]{2}-[0-9]{2})::-:(buildd autosigning key ${BUILDD} <buildd_${ARCH}-${BUILDD}@buildd.debian.org>):$"
195 regex2="^pub:-:([0-9]{4}):1:([0-9A-F]{16}):([0-9]{4}-[0-9]{2}-[0-9]{2}):([0-9]{4}-[0-9]{2}-[0-9]{2})::-:$"
196 regex3="^uid:::::::::(buildd autosigning key ${BUILDD} <buildd_${ARCH}-${BUILDD}@buildd.debian.org>):$"
197 while read line <&4; do
198 if [[ $line =~ $regex ]]; then
199 KEYSIZE=${BASH_REMATCH[1]}
200 KEYID=${BASH_REMATCH[2]}
201 KEYCREATE=${BASH_REMATCH[3]}
202 KEYEXPIRE=${BASH_REMATCH[4]}
203 KEYUID=${BASH_REMATCH[5]}
204 elif [[ $line =~ $regex2 ]]; then
205 KEYSIZE=${BASH_REMATCH[1]}
206 KEYID=${BASH_REMATCH[2]}
207 KEYCREATE=${BASH_REMATCH[3]}
208 KEYEXPIRE=${BASH_REMATCH[4]}
209 elif [[ $line =~ $regex3 ]]; then
210 KEYUID=${BASH_REMATCH[1]}
212 log "Didn't recognize the key. Go kiss gpg"
214 mv "${INCOMING}/${file}" "${ERRORS}/badkey.${file}.${DATE}"
215 mv "${GPGSTATUS}" "${ERRORS}/badkey.${file}.gpgstatus.${DATE}"
216 mv "${GPGLOGS}" "${ERRORS}/badkey.${file}.gpglogs.${DATE}"
221 if [ -z "${KEYUID}" ]; then
222 log "Did not recognize the UID format"
224 mv "${INCOMING}/${file}" "${ERRORS}/keyuid.${file}.${DATE}"
225 mv "${GPGSTATUS}" "${ERRORS}/keyuid.${file}.gpgstatus.${DATE}"
226 mv "${GPGLOGS}" "${ERRORS}/keyuid.${file}.gpglogs.${DATE}"
230 # We do want 4096 or anything above
231 if [ ${KEYSIZE} -lt 4096 ]; then
232 log "Keysize ${KEYSIZE} too small"
234 mv "${INCOMING}/${file}" "${ERRORS}/keysize.${file}.${DATE}"
235 mv "${GPGSTATUS}" "${ERRORS}/keysize.${file}.gpgstatus.${DATE}"
236 mv "${GPGLOGS}" "${ERRORS}/keysize.${file}.gpglogs.${DATE}"
241 # We want a maximum lifetime of 120 days, so check that.
242 # Easiest to compare in epoch, so lets see, 120 days midnight from now,
243 # compared with their set expiration date at midnight
244 # maxdate should turn out higher. just in case we make it 121 for this check
245 maxdate=$(date -d '121 day 00:00:00' +%s)
246 theirexpire=$(date -d "${KEYEXPIRE} 00:00:00" +%s)
247 if [ ${theirexpire} -gt ${maxdate} ]; then
248 log "Key expiry ${KEYEXPIRE} wrong"
250 mv "${INCOMING}/${file}" "${ERRORS}/keyexpire.${file}.${DATE}"
251 mv "${GPGSTATUS}" "${ERRORS}/keyexpire.${file}.gpgstatus.${DATE}"
252 mv "${GPGLOGS}" "${ERRORS}/keyexpire.${file}.gpglogs.${DATE}"
257 # And now lets check how many keys this buildd already has. 2 is the maximum, so key
258 # rollover works. 3 won't, they have to rm one first
259 # We need to check for the amount of keys
260 ARCHKEYRING="${base}/${ARCH}/keyring.gpg"
262 KEYNO=$(gpg ${DEFGPGOPT} --keyring "${ARCHKEYRING}" --with-colons --list-keys "buildd_${ARCH}-${BUILDD}@buildd.debian.org" | grep -c '^pub:' || /bin/true )
263 if [ ${KEYNO} -gt 2 ]; then
265 mv "${INCOMING}/${file}" "${ERRORS}/toomany.${file}.${DATE}"
266 mv "${GPGSTATUS}" "${ERRORS}/toomany.${file}.gpgstatus.${DATE}"
267 mv "${GPGLOGS}" "${ERRORS}/toomany.${file}.gpglogs.${DATE}"
272 # Right. At this point everything should be in order, which means we should put the key into
274 KEYSUBMITTER=$(cat "${GPGSTATUS}"|grep GOODSIG)
275 KEYSUBMITTER=${KEYSUBMITTER##*GOODSIG}
276 log "${KEYSUBMITTER} added key ${KEYID} for ${ARCH} buildd ${BUILDD}, expire ${KEYEXPIRE}"
277 gpg ${DEFGPGOPT} --status-fd 4 --logger-fd 5 --keyring "${ARCHKEYRING}" --import "${GPGOUTF}" 2>/dev/null
279 mv "${INCOMING}/${file}" "${base}/${ARCH}"