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Annotation of openbsd/fw_update/fw_install.sh, Revision 1.28

1.1       afresh1     1: #!/bin/ksh
                      2: set -e
                      3:
                      4: scan_dmesg() {
                      5:        # no bsort for now
                      6:        sed -n "$1" /var/run/dmesg.boot
                      7: }
                      8:
1.24      afresh1     9: # Fake up some things from install.sub that we don't need to actually do
1.22      afresh1    10: prefetcharea_fs_list() {
1.27      afresh1    11:        echo "${DESTDIR}/tmp"
1.22      afresh1    12: }
                     13: reset_watchdog() {
                     14: }
                     15:
1.8       afresh1    16: # tmpdir, do_as, unpriv, and unpriv2 are from install.sub
                     17:
                     18: # Create a temporary directory based on the supplied directory name prefix.
                     19: tmpdir() {
                     20:        local _i=1 _dir
                     21:
                     22:        until _dir="${1?}.$_i.$RANDOM" && mkdir -- "$_dir" 2>/dev/null; do
                     23:                ((++_i < 10000)) || return 1
                     24:        done
                     25:        echo "$_dir"
                     26: }
1.6       afresh1    27:
                     28: # Run a command ($2+) as unprivileged user ($1).
                     29: # Take extra care that after "cmd" no "user" processes exist.
                     30: #
                     31: # Optionally:
                     32: #      - create "file" and chown it to "user"
                     33: #      - after "cmd", chown "file" back to root
                     34: #
                     35: # Usage: do_as user [-f file] cmd
                     36: do_as() {
                     37:        (( $# >= 2 )) || return
                     38:
                     39:        local _file _rc _user=$1
                     40:        shift
                     41:
                     42:        if [[ $1 == -f ]]; then
                     43:                _file=$2
                     44:                shift 2
                     45:        fi
                     46:
                     47:        if [[ -n $_file ]]; then
                     48:                >$_file
                     49:                chown "$_user" "$_file"
                     50:        fi
                     51:
                     52:        doas -u "$_user" "$@"
                     53:        _rc=$?
                     54:
                     55:        while doas -u "$_user" kill -9 -1 2>/dev/null; do
                     56:                echo "Processes still running for user $_user after: $@"
                     57:                sleep 1
                     58:        done
                     59:
                     60:        [[ -n $_file ]] && chown root "$_file"
                     61:
                     62:        return $_rc
                     63: }
                     64:
                     65: unpriv() {
                     66:        do_as _sndio "$@"
                     67: }
                     68:
                     69: unpriv2() {
                     70:        do_as _file "$@"
                     71: }
                     72:
1.20      afresh1    73: # "fail" needs to be replaced with the "ask_yn" loop like in the installer.
1.8       afresh1    74: _issue=
                     75: fail() {
                     76:        echo $_issue >&2
                     77:        exit 1
                     78: }
                     79:
1.7       afresh1    80: VNAME=$(sysctl -n kern.osrelease)
                     81: VERSION="${VNAME%.*}${VNAME#*.}"
                     82: FWDIR="$VNAME"
1.1       afresh1    83:
1.14      afresh1    84: # TODO: We need the firmware for the system we just installed
                     85: #       not the one we booted from.  For example:
                     86: #       * booting from a snapshot bsd.rd that thinks it is the 7.0 release
                     87: #         will install the firmware from the 7.0 directory instead of
                     88: #         from the snapshots dir.
                     89: #       If they're using sysupgrade, then the installer kernel will be correct.
                     90: #       If we're doing this in the installer we can check what they picked
                     91: #       for downloading sets and use that value.
                     92: #       Otherwise, the fw_update after first boot will fix it up for us.
                     93:
1.7       afresh1    94: HTTP_FWDIR=$FWDIR
                     95: set -- $(scan_dmesg "/^OpenBSD $VNAME\([^ ]*\).*$/s//\1/p")
                     96: [[ $1 == -!(stable) ]] && HTTP_FWDIR=snapshots
                     97:
                     98: FWURL=http://firmware.openbsd.org/firmware/${HTTP_FWDIR}
                     99: FWPUB_KEY=${DESTDIR}/etc/signify/openbsd-${VERSION}-fw.pub
1.20      afresh1   100: FWPATTERNS="file:${0%/*}/firmware_patterns"
1.1       afresh1   101:
1.20      afresh1   102: # TODO: support srclocal installation of firmware somehow
1.11      afresh1   103: fw_update() {
1.24      afresh1   104:        local _src=$1 _tmpfs_list _tmpfs _tmpsrc \
1.27      afresh1   105:                _t=Get _cfile="/tmp/SHA256" _pkgdir=${DESTDIR}/var/db/pkg \
1.25      afresh1   106:                _f _r _remove _i _installed
                    107:        local _srclocal=false _unpriv=unpriv
1.26      afresh1   108:
                    109:        echo "Let's $MODE firmware!"
1.15      afresh1   110:        local _d _drivers=$(
1.11      afresh1   111:                last=''
1.24      afresh1   112:                $_unpriv ftp -D "Detecting" -Vmo- $FWPATTERNS |
1.15      afresh1   113:                while read _d _m; do
1.11      afresh1   114:                        grep=grep
1.15      afresh1   115:                        [ "$last" = "$_d" ] && continue
                    116:                        [ "$_m" ] || _m="^$_d[0-9][0-9]* at "
                    117:                        [ "$_m" = "${_m#^}" ] && grep=fgrep
                    118:                        $grep -q "$_m" /var/run/dmesg.boot || continue
                    119:                        echo $_d
                    120:                        last=$_d
1.11      afresh1   121:                done
                    122:        )
                    123:
                    124:        if [ -z "$_drivers" ]; then
1.22      afresh1   125:                echo "No devices found which need firmware files to be downloaded."
1.11      afresh1   126:                return
                    127:        fi
1.1       afresh1   128:
1.22      afresh1   129:        ! _tmpfs_list=$(prefetcharea_fs_list) &&
                    130:                echo "Cannot determine prefetch area" >&2 && return
                    131:
                    132:        for _tmpfs in $_tmpfs_list; do
                    133:                # Try to clean up from previous runs, assuming
                    134:                # the _tmpfs selection yields the same mount
                    135:                # point.
                    136:                for _tmpsrc in $_tmpfs/firmware.+([0-9]).+([0-9]); do
                    137:                        [[ -d $_tmpsrc ]] && rm -r $_tmpsrc
                    138:                done
                    139:
                    140:                # Create a download directory for the firmware and
                    141:                # check that the _sndio user can read files from
                    142:                # it. Otherwise cleanup and skip the filesystem.
                    143:                if _tmpsrc=$(tmpdir "$_tmpfs/firmware"); then
                    144:                        (
                    145:                        >$_tmpsrc/t &&
                    146:                        $_unpriv cat $_tmpsrc/t
                    147:                        ) >/dev/null 2>&1 && break ||
                    148:                                rm -r $_tmpsrc
                    149:                fi
                    150:        done
1.1       afresh1   151:
1.11      afresh1   152:        [[ ! -d $_tmpsrc ]] &&
1.22      afresh1   153:                echo "Cannot create prefetch area" >&2 && return 1
1.1       afresh1   154:
1.16      afresh1   155:        # Cleanup from previous runs.
                    156:        rm -f $_cfile $_cfile.sig
                    157:
1.21      afresh1   158:        _t=Get/Verify
1.17      afresh1   159:
1.11      afresh1   160:        ! $_unpriv ftp -D "$_t" -Vmo - "$_src/SHA256.sig" >"$_cfile.sig" &&
1.22      afresh1   161:            echo "Cannot fetch SHA256.sig" >&2 && return 1
1.1       afresh1   162:
1.11      afresh1   163:        # Verify signature file with public keys.
1.24      afresh1   164:        ! $_unpriv -f "$_cfile" \
1.11      afresh1   165:            signify -Vep $FWPUB_KEY -x "$_cfile.sig" -m "$_cfile" &&
1.22      afresh1   166:            echo "Signature check of SHA256.sig failed" >&2 && return 1
1.11      afresh1   167:
1.15      afresh1   168:        for _d in $_drivers; do
1.22      afresh1   169:                $UU && reset_watchdog
1.15      afresh1   170:                _f=$( sed -n "s/.*(\($_d-firmware-.*\.tgz\)).*/\1/p" "$_cfile" )
1.19      afresh1   171:                _installed=$(
1.22      afresh1   172:                for fw in "${_pkgdir}/$_d-firmware"*; do
1.19      afresh1   173:                        [ -e "$fw" ] || continue
                    174:                        echo ${fw##*/}
                    175:                done
1.21      afresh1   176:                )
1.15      afresh1   177:
                    178:                for _i in $_installed; do
                    179:                        if [ "$_f" = "$_i.tgz" ]; then
1.24      afresh1   180:                                echo "$_i already installed"
1.11      afresh1   181:                                continue 2
1.1       afresh1   182:                        fi
                    183:                done
                    184:
1.11      afresh1   185:                rm -f /tmp/h /tmp/fail
                    186:
                    187:                # Fetch firmware file and create a checksum by piping through
                    188:                # sha256. Create a flag file in case ftp failed. Firmware
                    189:                # from net is written to the prefetch area.
                    190:                ( $_unpriv ftp -D "$_t" -Vmo - "$_src/$_f" || >/tmp/fail ) |
                    191:                ( $_srclocal && unpriv2 sha256 -b >/tmp/h ||
                    192:                    unpriv2 -f /tmp/h sha256 -bph /tmp/h >"$_tmpsrc/$_f" )
                    193:
                    194:                # Handle failed transfer.
                    195:                if [[ -f /tmp/fail ]]; then
                    196:                        rm -f "$_tmpsrc/$_f"
1.22      afresh1   197:                        echo "Fetching of $_f failed!" >&2
                    198:                        continue
1.11      afresh1   199:                fi
                    200:
                    201:                # Verify firmware by comparing its checksum with SHA256.
1.22      afresh1   202:                if ! fgrep -qx "SHA256 ($_f) = $(</tmp/h)" "$_cfile"; then
1.11      afresh1   203:                        [[ -d "$_tmpsrc" ]] && rm -rf "$_tmpsrc"
1.22      afresh1   204:                        echo "Checksum test for $_f failed." >&2
                    205:                        continue
1.11      afresh1   206:                fi
                    207:
                    208:                # TODO: Check hash for files before deleting
1.22      afresh1   209:                if [ "$_installed" ] && [ -e "${_pkgdir}/$_installed/+CONTENTS" ]; then
1.18      afresh1   210:                        echo "Uninstalling $_installed"
1.22      afresh1   211:                        cwd=${_pkgdir}/$_installed
1.11      afresh1   212:
                    213:                        set -A _remove -- "${cwd}/+CONTENTS" "${cwd}"
                    214:
                    215:                        while read c g; do
                    216:                                case $c in
1.27      afresh1   217:                                @cwd) cwd="${DESTDIR}/$g"
1.11      afresh1   218:                                  ;;
                    219:                                @*) continue
                    220:                                  ;;
                    221:                                *)  set -A _remove -- "$cwd/$c" "${_remove[@]}"
                    222:                                  ;;
                    223:                                esac
1.22      afresh1   224:                        done < "${_pkgdir}/$_installed/+CONTENTS"
1.11      afresh1   225:
1.21      afresh1   226:                        # We specifically rm -f here because not removing files/dirs
                    227:                        # is probably not worth failing over.
1.11      afresh1   228:                        for _r in "${_remove[@]}" ; do
                    229:                                if [ -d "$_r" ]; then
                    230:                                        # Try hard not to actually remove recursively
                    231:                                        # without rmdir on the install media.
                    232:                                        [ "$_r/*" = $( echo "$_r"/* ) ] && rm -rf "$_r"
                    233:                                else
                    234:                                        rm -f "$_r"
                    235:                                fi
                    236:                        done
                    237:                fi
                    238:
1.21      afresh1   239:                # TODO: Should we mark these so real fw_update can -Drepair?
1.25      afresh1   240:                ftp -D "Install" -Vmo- "file:$_tmpsrc/$_f" |
                    241:                        tar -s ",^\+,${_pkgdir}/${_f%.tgz}/+," \
1.28    ! afresh1   242:                        -s ",^firmware,${DESTDIR}/etc/firmware," \
1.25      afresh1   243:                        -C / -zxphf - "+*" "firmware/*"
1.23      afresh1   244:
1.22      afresh1   245:                ed -s "${_pkgdir}/${_f%.tgz}/+CONTENTS" <<EOL
1.1       afresh1   246: /^@comment pkgpath/ -1a
                    247: @option manual-installation
                    248: @option firmware
                    249: @comment install-script
                    250: .
                    251: w
                    252: EOL
1.11      afresh1   253:        done
                    254: }
1.1       afresh1   255:
1.24      afresh1   256: fw_update "$FWURL"

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