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 . "${configdir}/common"
43 trap - ERR EXIT TERM HUP INT QUIT
45 for TEMPFILE in GPGSTATUS GPGLOGS GPGOUTF TEMPKEYDATA; do
46 TFILE=${TEMPFILE:=$TEMPFILE}
48 if [ -n "${DELF}" ] && [ -f "${DELF}" ]; then
55 base="${base}/scripts/builddkeyrings"
56 INCOMING="${base}/incoming"
57 ERRORS="${base}/errors"
58 ADMINS="${base}/adminkeys.gpg"
59 STAMPFILE="${base}/updatedkeyring"
61 # Default options for our gpg calls
62 DEFGPGOPT="--no-default-keyring --batch --no-tty --no-options --exit-on-status-write-error --no-greeting"
64 if ! [ -d "${INCOMING}" ]; then
65 log "Missing incoming dir, nothing to do"
70 KEYS=$(find . -maxdepth 1 -mindepth 1 -type f -name \*.key | sed -e "s,./,," | xargs)
71 if [ -z "${KEYS}" ]; then
75 trap cleanup ERR EXIT TERM HUP INT QUIT
77 # Whenever something goes wrong, its put in there.
80 # We process all new files in our incoming directory
81 for file in ${KEYS}; do
83 # First we want to see if we recognize the filename. The buildd people have
84 # to follow a certain schema:
85 # architecture_builddname.YEAR-MONTH-DAY_HOURMINUTE.key
86 if [[ $file =~ (.*)_(.*).([0-9]{4}-[0-9]{2}-[0-9]{2}_[0-9]{2}[0-9]{2}).key ]]; then
87 ARCH=${BASH_REMATCH[1]}
88 BUILDD=${BASH_REMATCH[2]}
89 # Right now timestamp is unused
90 TIMESTAMP=${BASH_REMATCH[3]}
92 log "Unknown file ${file}, not processing"
93 mv "${INCOMING}/${file}" "${ERRORS}/unknown.${file}.$(date -Is)"
97 # Do we know the architecture?
99 for carch in ${archs}; do
100 if [ "${ARCH}" == "${carch}" ]; then
101 log "Known arch ${ARCH}, buildd ${BUILDD}"
107 if [ ${found} -eq 0 ]; then
108 log "Unknown architecture ${ARCH}"
109 mv "${INCOMING}/${file}" "${ERRORS}/unknownarch.${file}.$(date -Is)"
113 # If we did have a file with this name already somethings wrong
114 if [ -f "${base}/${ARCH}/${file}" ]; then
115 log "Already processed this file"
116 mv "${INCOMING}/${file}" "${ERRORS}/duplicate.${file}.$(date -Is)"
120 # Where we want the status-fd from gpgv turn up
121 GPGSTATUS=$(mktemp -p "${TMPDIR}" GPGSTATUS.XXXXXX)
122 # Same for the loggger-fd
123 GPGLOGS=$(mktemp -p "${TMPDIR}" GPGLOGS.XXXXXX)
124 # And "decrypt" gives us output, the key without the pgp sig around it
125 GPGOUTF=$(mktemp -p "${TMPDIR}" GPGOUTF.XXXXXX)
127 # Open the filehandles, assigning them to the two files, so we can let gpg use them
128 exec 4> "${GPGSTATUS}"
131 # So lets run gpg, status/logger into the two files, to "decrypt" the keyfile
132 if ! gpg ${DEFGPGOPT} --keyring "${ADMINS}" --status-fd 4 --logger-fd 5 --decrypt "${INCOMING}/${file}" > "${GPGOUTF}"; then
134 log "gpg returned with ${ret}, not adding key from file ${file}"
136 mv "${INCOMING}/${file}" "${ERRORS}/gpgerror.${file}.${DATE}"
137 mv "${GPGSTATUS}" "${ERRORS}/gpgerror.${file}.gpgstatus.${DATE}"
138 mv "${GPGLOGS}" "${ERRORS}/gpgerror.${file}.gpglogs.${DATE}"
143 # Read in the status output
144 GPGSTAT=$(cat "${GPGSTATUS}")
145 # And check if we like the sig. It has to be both, GOODISG and VALIDSIG or we don't accept it
146 if [[ ${GPGSTAT} =~ "GOODSIG" ]] && [[ ${GPGSTAT} =~ "VALIDSIG" ]]; then
147 log "Signature for ${file} accepted"
149 log "We are missing one of GOODSIG or VALIDSIG"
151 mv "${INCOMING}/${file}" "${ERRORS}/badsig.${file}.${DATE}"
152 mv "${GPGSTATUS}" "${ERRORS}/badsig.${file}.gpgstatus.${DATE}"
153 mv "${GPGLOGS}" "${ERRORS}/badsig.${file}.gpglogs.${DATE}"
158 # So at this point we know we accepted the signature of the file as valid,
159 # that is it is from a key allowed for this architecture. Which only
160 # leaves us with the task of checking if the key fulfills the requirements
161 # before we add it to the architectures keyring.
163 # Those currently are:
164 # - keysize 4096 or larger
165 # - RSA key, no encryption capability
166 # - UID matching "buildd autosigning key BUILDDNAME <buildd_ARCH-BUILDDNAME@buildd.debian.org>
167 # - expire within a 120 days
168 # - maximum 2 keys per architecture and buildd
170 TEMPKEYDATA=$(mktemp -p "${TMPDIR}" BDKEYS.XXXXXX)
172 gpg ${DEFGPGOPT} --with-colons "${GPGOUTF}" > "${TEMPKEYDATA}"
174 # Read in the TEMPKEYDATAFILE, but avoid using a subshell like a
175 # while read line otherwise would do
176 exec 4<> "${TEMPKEYDATA}"
178 while read line <&4; do
179 #pub:-:4096:1:FAB983612A6554FA:2011-03-24:2011-07-22::-:buildd autosigning key poulenc <buildd_powerpc-poulenc@buildd.debian.org>:
181 # Besides fiddling out the data we need to check later, this regex also check:
182 # - the keytype (:1:, 1 there means RSA)
184 # - that the key does have an expiration date (or it wont match, the second date
185 # field would be empty
186 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}-${BUILDD}@buildd.debian.org>:$"
187 if [[ $line =~ $regex ]]; then
188 KEYSIZE=${BASH_REMATCH[1]}
189 KEYID=${BASH_REMATCH[2]}
190 KEYCREATE=${BASH_REMATCH[3]}
191 KEYEXPIRE=${BASH_REMATCH[4]}
193 # We do want 4096 or anything above
194 if [ ${KEYSIZE} -lt 4096 ]; then
195 log "Keysize ${KEYSIZE} too small"
196 error="${error} Keysize ${KEYSIZE} too small"
200 # We want a maximum lifetime of 120 days, so check that.
201 # Easiest to compare in epoch, so lets see, 120 days midnight from now,
202 # compared with their set expiration date at midnight
203 # maxdate should turn out higher. just in case we make it 121 for this check
204 maxdate=$(date -d '121 day 00:00:00' +%s)
205 theirexpire=$(date -d "${KEYEXPIRE} 00:00:00" +%s)
206 if [ ${theirexpire} -gt ${maxdate} ]; then
207 log "Key expiry ${KEYEXPIRE} wrong"
208 error="${error} Key expiry ${KEYEXPIRE} wrong"
212 log "Unknown line $line, sod off"
213 error="${error} Unknown line $line, sod off"
217 if [ -n "${error}" ]; then
220 mv "${INCOMING}/${file}" "${ERRORS}/badkey.${file}.${DATE}"
221 mv "${GPGSTATUS}" "${ERRORS}/badkey.${file}.gpgstatus.${DATE}"
222 mv "${GPGLOGS}" "${ERRORS}/badkey.${file}.gpglogs.${DATE}"
223 echo "${error}" >> "${ERRORS}/badkey.${file}.error.${DATE}"
228 # And now lets check how many keys this buildd already has. 2 is the maximum, so key
229 # rollover works. 3 won't, they have to rm one first
230 # We need to check for the amount of keys
231 ARCHKEYRING="${base}/${ARCH}/keyring.gpg"
233 KEYNO=$(gpg ${DEFGPGOPT} --keyring "${ARCHKEYRING}" --with-colons --list-keys "buildd_${ARCH}-${BUILDD}@buildd.debian.org" | grep -c '^pub:' || /bin/true )
234 if [ ${KEYNO} -gt 2 ]; then
236 mv "${INCOMING}/${file}" "${ERRORS}/toomany.${file}.${DATE}"
237 mv "${GPGSTATUS}" "${ERRORS}/toomany.${file}.gpgstatus.${DATE}"
238 mv "${GPGLOGS}" "${ERRORS}/toomany.${file}.gpglogs.${DATE}"
243 # Right. At this point everything should be in order, which means we should put the key into
245 log "Accepting key ${KEYID} for ${ARCH} buildd ${BUILDD}, expire ${KEYEXPIRE}"
246 gpg ${DEFGPGOPT} --status-fd 4 --logger-fd 5 --keyring "${ARCHKEYRING}" --import "${GPGOUTF}" 2>/dev/null
248 mv "${INCOMING}/${file}" "${base}/${ARCH}"