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Annotation of openbsd/fw_update/fw_install.sh, Revision 1.38

1.1       afresh1     1: #!/bin/ksh
1.36      afresh1     2: #      $OpenBSD$
1.1       afresh1     3: set -e
                      4:
1.38    ! afresh1     5: # Copyright (c) 2021 Andrew Hewus Fresh <afresh1@openbsd.org>
        !             6: #
        !             7: # Permission to use, copy, modify, and distribute this software for any
        !             8: # purpose with or without fee is hereby granted, provided that the above
        !             9: # copyright notice and this permission notice appear in all copies.
        !            10: #
        !            11: # THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
        !            12: # WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
        !            13: # MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
        !            14: # ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
        !            15: # WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
        !            16: # ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
        !            17: # OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
        !            18:
1.24      afresh1    19: # Fake up some things from install.sub that we don't need to actually do
1.22      afresh1    20: prefetcharea_fs_list() {
1.27      afresh1    21:        echo "${DESTDIR}/tmp"
1.22      afresh1    22: }
                     23:
1.8       afresh1    24: # tmpdir, do_as, unpriv, and unpriv2 are from install.sub
                     25:
                     26: # Create a temporary directory based on the supplied directory name prefix.
                     27: tmpdir() {
                     28:        local _i=1 _dir
                     29:
                     30:        until _dir="${1?}.$_i.$RANDOM" && mkdir -- "$_dir" 2>/dev/null; do
                     31:                ((++_i < 10000)) || return 1
                     32:        done
                     33:        echo "$_dir"
                     34: }
1.6       afresh1    35:
                     36: # Run a command ($2+) as unprivileged user ($1).
                     37: # Take extra care that after "cmd" no "user" processes exist.
                     38: #
                     39: # Optionally:
                     40: #      - create "file" and chown it to "user"
                     41: #      - after "cmd", chown "file" back to root
                     42: #
                     43: # Usage: do_as user [-f file] cmd
                     44: do_as() {
                     45:        (( $# >= 2 )) || return
                     46:
                     47:        local _file _rc _user=$1
                     48:        shift
                     49:
                     50:        if [[ $1 == -f ]]; then
                     51:                _file=$2
                     52:                shift 2
                     53:        fi
                     54:
                     55:        if [[ -n $_file ]]; then
                     56:                >$_file
                     57:                chown "$_user" "$_file"
                     58:        fi
                     59:
                     60:        doas -u "$_user" "$@"
                     61:        _rc=$?
                     62:
                     63:        while doas -u "$_user" kill -9 -1 2>/dev/null; do
                     64:                echo "Processes still running for user $_user after: $@"
                     65:                sleep 1
                     66:        done
                     67:
                     68:        [[ -n $_file ]] && chown root "$_file"
                     69:
                     70:        return $_rc
                     71: }
                     72:
                     73: unpriv() {
                     74:        do_as _sndio "$@"
                     75: }
                     76:
                     77: unpriv2() {
                     78:        do_as _file "$@"
                     79: }
                     80:
1.33      afresh1    81: VNAME=${VNAME:-$(sysctl -n kern.osrelease)}
1.34      afresh1    82: VERSION=${VERSION:-"${VNAME%.*}${VNAME#*.}"}
1.33      afresh1    83: FWDIR=${FWDIR:-$VNAME}
1.29      afresh1    84: MODE=${MODE:-install}
1.1       afresh1    85:
1.14      afresh1    86: # TODO: We need the firmware for the system we just installed
                     87: #       not the one we booted from.  For example:
                     88: #       * booting from a snapshot bsd.rd that thinks it is the 7.0 release
                     89: #         will install the firmware from the 7.0 directory instead of
                     90: #         from the snapshots dir.
                     91: #       If they're using sysupgrade, then the installer kernel will be correct.
                     92: #       If we're doing this in the installer we can check what they picked
                     93: #       for downloading sets and use that value.
                     94: #       Otherwise, the fw_update after first boot will fix it up for us.
                     95:
1.7       afresh1    96: HTTP_FWDIR=$FWDIR
1.30      afresh1    97: set -- sed -n "/^OpenBSD $VNAME\([^ ]*\).*$/s//\1/p" /var/run/dmesg.boot
1.7       afresh1    98: [[ $1 == -!(stable) ]] && HTTP_FWDIR=snapshots
                     99:
                    100: FWURL=http://firmware.openbsd.org/firmware/${HTTP_FWDIR}
                    101: FWPUB_KEY=${DESTDIR}/etc/signify/openbsd-${VERSION}-fw.pub
1.37      afresh1   102: FWPATTERNS="${DESTDIR}/usr/share/misc/firmware_patterns"
1.1       afresh1   103:
1.20      afresh1   104: # TODO: support srclocal installation of firmware somehow
1.35      afresh1   105: fw_install() {
1.24      afresh1   106:        local _src=$1 _tmpfs_list _tmpfs _tmpsrc \
1.27      afresh1   107:                _t=Get _cfile="/tmp/SHA256" _pkgdir=${DESTDIR}/var/db/pkg \
1.25      afresh1   108:                _f _r _remove _i _installed
                    109:        local _srclocal=false _unpriv=unpriv
1.26      afresh1   110:
                    111:        echo "Let's $MODE firmware!"
1.15      afresh1   112:        local _d _drivers=$(
1.11      afresh1   113:                last=''
1.15      afresh1   114:                while read _d _m; do
1.11      afresh1   115:                        grep=grep
1.15      afresh1   116:                        [ "$last" = "$_d" ] && continue
                    117:                        [ "$_m" ] || _m="^$_d[0-9][0-9]* at "
                    118:                        [ "$_m" = "${_m#^}" ] && grep=fgrep
                    119:                        $grep -q "$_m" /var/run/dmesg.boot || continue
                    120:                        echo $_d
                    121:                        last=$_d
1.37      afresh1   122:                done < $FWPATTERNS
1.11      afresh1   123:        )
                    124:
                    125:        if [ -z "$_drivers" ]; then
1.22      afresh1   126:                echo "No devices found which need firmware files to be downloaded."
1.11      afresh1   127:                return
                    128:        fi
1.1       afresh1   129:
1.22      afresh1   130:        ! _tmpfs_list=$(prefetcharea_fs_list) &&
                    131:                echo "Cannot determine prefetch area" >&2 && return
                    132:
                    133:        for _tmpfs in $_tmpfs_list; do
                    134:                # Try to clean up from previous runs, assuming
                    135:                # the _tmpfs selection yields the same mount
                    136:                # point.
                    137:                for _tmpsrc in $_tmpfs/firmware.+([0-9]).+([0-9]); do
                    138:                        [[ -d $_tmpsrc ]] && rm -r $_tmpsrc
                    139:                done
                    140:
                    141:                # Create a download directory for the firmware and
                    142:                # check that the _sndio user can read files from
                    143:                # it. Otherwise cleanup and skip the filesystem.
                    144:                if _tmpsrc=$(tmpdir "$_tmpfs/firmware"); then
                    145:                        (
                    146:                        >$_tmpsrc/t &&
                    147:                        $_unpriv cat $_tmpsrc/t
                    148:                        ) >/dev/null 2>&1 && break ||
                    149:                                rm -r $_tmpsrc
                    150:                fi
                    151:        done
1.1       afresh1   152:
1.11      afresh1   153:        [[ ! -d $_tmpsrc ]] &&
1.22      afresh1   154:                echo "Cannot create prefetch area" >&2 && return 1
1.1       afresh1   155:
1.16      afresh1   156:        # Cleanup from previous runs.
                    157:        rm -f $_cfile $_cfile.sig
                    158:
1.21      afresh1   159:        _t=Get/Verify
1.17      afresh1   160:
1.11      afresh1   161:        ! $_unpriv ftp -D "$_t" -Vmo - "$_src/SHA256.sig" >"$_cfile.sig" &&
1.22      afresh1   162:            echo "Cannot fetch SHA256.sig" >&2 && return 1
1.1       afresh1   163:
1.11      afresh1   164:        # Verify signature file with public keys.
1.24      afresh1   165:        ! $_unpriv -f "$_cfile" \
1.11      afresh1   166:            signify -Vep $FWPUB_KEY -x "$_cfile.sig" -m "$_cfile" &&
1.22      afresh1   167:            echo "Signature check of SHA256.sig failed" >&2 && return 1
1.11      afresh1   168:
1.15      afresh1   169:        for _d in $_drivers; do
                    170:                _f=$( 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}/${_f%.tgz}/+CONTENTS" <<EOL
1.1       afresh1   246: /^@comment pkgpath/ -1a
                    247: @option manual-installation
                    248: @option firmware
                    249: @comment install-script
                    250: .
                    251: w
                    252: EOL
1.11      afresh1   253:        done
                    254: }
1.1       afresh1   255:
1.35      afresh1   256: fw_install "$FWURL"

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