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HardenedBSD/usr.sbin/freebsd-update/freebsd-update.sh
Colin Percival 97d4be7ebc Add '%' and '@' to the set of characters which can appear in path names. 
Without this change, freebsd-update refuses to accept 9.0 metadata files.
2011-10-23 06:23:11 +00:00

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#!/bin/sh
#-
# Copyright 2004-2007 Colin Percival
# All rights reserved
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted providing that the following conditions
# are met:
# 1. Redistributions of source code must retain the above copyright
# notice, this list of conditions and the following disclaimer.
# 2. Redistributions in binary form must reproduce the above copyright
# notice, this list of conditions and the following disclaimer in the
# documentation and/or other materials provided with the distribution.
#
# THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
# IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
# WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
# ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
# DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
# STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
# IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
# POSSIBILITY OF SUCH DAMAGE.
# $FreeBSD$
#### Usage function -- called from command-line handling code.
# Usage instructions. Options not listed:
# --debug -- don't filter output from utilities
# --no-stats -- don't show progress statistics while fetching files
usage () {
cat <<EOF
usage: `basename $0` [options] command ... [path]
Options:
-b basedir -- Operate on a system mounted at basedir
(default: /)
-d workdir -- Store working files in workdir
(default: /var/db/freebsd-update/)
-f conffile -- Read configuration options from conffile
(default: /etc/freebsd-update.conf)
-k KEY -- Trust an RSA key with SHA256 hash of KEY
-r release -- Target for upgrade (e.g., 6.2-RELEASE)
-s server -- Server from which to fetch updates
(default: update.FreeBSD.org)
-t address -- Mail output of cron command, if any, to address
(default: root)
Commands:
fetch -- Fetch updates from server
cron -- Sleep rand(3600) seconds, fetch updates, and send an
email if updates were found
upgrade -- Fetch upgrades to FreeBSD version specified via -r option
install -- Install downloaded updates or upgrades
rollback -- Uninstall most recently installed updates
IDS -- Compare the system against an index of "known good" files.
EOF
exit 0
}
#### Configuration processing functions
#-
# Configuration options are set in the following order of priority:
# 1. Command line options
# 2. Configuration file options
# 3. Default options
# In addition, certain options (e.g., IgnorePaths) can be specified multiple
# times and (as long as these are all in the same place, e.g., inside the
# configuration file) they will accumulate. Finally, because the path to the
# configuration file can be specified at the command line, the entire command
# line must be processed before we start reading the configuration file.
#
# Sound like a mess? It is. Here's how we handle this:
# 1. Initialize CONFFILE and all the options to "".
# 2. Process the command line. Throw an error if a non-accumulating option
# is specified twice.
# 3. If CONFFILE is "", set CONFFILE to /etc/freebsd-update.conf .
# 4. For all the configuration options X, set X_saved to X.
# 5. Initialize all the options to "".
# 6. Read CONFFILE line by line, parsing options.
# 7. For each configuration option X, set X to X_saved iff X_saved is not "".
# 8. Repeat steps 4-7, except setting options to their default values at (6).
CONFIGOPTIONS="KEYPRINT WORKDIR SERVERNAME MAILTO ALLOWADD ALLOWDELETE
KEEPMODIFIEDMETADATA COMPONENTS IGNOREPATHS UPDATEIFUNMODIFIED
BASEDIR VERBOSELEVEL TARGETRELEASE STRICTCOMPONENTS MERGECHANGES
IDSIGNOREPATHS BACKUPKERNEL BACKUPKERNELDIR BACKUPKERNELSYMBOLFILES"
# Set all the configuration options to "".
nullconfig () {
for X in ${CONFIGOPTIONS}; do
eval ${X}=""
done
}
# For each configuration option X, set X_saved to X.
saveconfig () {
for X in ${CONFIGOPTIONS}; do
eval ${X}_saved=\$${X}
done
}
# For each configuration option X, set X to X_saved if X_saved is not "".
mergeconfig () {
for X in ${CONFIGOPTIONS}; do
eval _=\$${X}_saved
if ! [ -z "${_}" ]; then
eval ${X}=\$${X}_saved
fi
done
}
# Set the trusted keyprint.
config_KeyPrint () {
if [ -z ${KEYPRINT} ]; then
KEYPRINT=$1
else
return 1
fi
}
# Set the working directory.
config_WorkDir () {
if [ -z ${WORKDIR} ]; then
WORKDIR=$1
else
return 1
fi
}
# Set the name of the server (pool) from which to fetch updates
config_ServerName () {
if [ -z ${SERVERNAME} ]; then
SERVERNAME=$1
else
return 1
fi
}
# Set the address to which 'cron' output will be mailed.
config_MailTo () {
if [ -z ${MAILTO} ]; then
MAILTO=$1
else
return 1
fi
}
# Set whether FreeBSD Update is allowed to add files (or directories, or
# symlinks) which did not previously exist.
config_AllowAdd () {
if [ -z ${ALLOWADD} ]; then
case $1 in
[Yy][Ee][Ss])
ALLOWADD=yes
;;
[Nn][Oo])
ALLOWADD=no
;;
*)
return 1
;;
esac
else
return 1
fi
}
# Set whether FreeBSD Update is allowed to remove files/directories/symlinks.
config_AllowDelete () {
if [ -z ${ALLOWDELETE} ]; then
case $1 in
[Yy][Ee][Ss])
ALLOWDELETE=yes
;;
[Nn][Oo])
ALLOWDELETE=no
;;
*)
return 1
;;
esac
else
return 1
fi
}
# Set whether FreeBSD Update should keep existing inode ownership,
# permissions, and flags, in the event that they have been modified locally
# after the release.
config_KeepModifiedMetadata () {
if [ -z ${KEEPMODIFIEDMETADATA} ]; then
case $1 in
[Yy][Ee][Ss])
KEEPMODIFIEDMETADATA=yes
;;
[Nn][Oo])
KEEPMODIFIEDMETADATA=no
;;
*)
return 1
;;
esac
else
return 1
fi
}
# Add to the list of components which should be kept updated.
config_Components () {
for C in $@; do
COMPONENTS="${COMPONENTS} ${C}"
done
}
# Add to the list of paths under which updates will be ignored.
config_IgnorePaths () {
for C in $@; do
IGNOREPATHS="${IGNOREPATHS} ${C}"
done
}
# Add to the list of paths which IDS should ignore.
config_IDSIgnorePaths () {
for C in $@; do
IDSIGNOREPATHS="${IDSIGNOREPATHS} ${C}"
done
}
# Add to the list of paths within which updates will be performed only if the
# file on disk has not been modified locally.
config_UpdateIfUnmodified () {
for C in $@; do
UPDATEIFUNMODIFIED="${UPDATEIFUNMODIFIED} ${C}"
done
}
# Add to the list of paths within which updates to text files will be merged
# instead of overwritten.
config_MergeChanges () {
for C in $@; do
MERGECHANGES="${MERGECHANGES} ${C}"
done
}
# Work on a FreeBSD installation mounted under $1
config_BaseDir () {
if [ -z ${BASEDIR} ]; then
BASEDIR=$1
else
return 1
fi
}
# When fetching upgrades, should we assume the user wants exactly the
# components listed in COMPONENTS, rather than trying to guess based on
# what's currently installed?
config_StrictComponents () {
if [ -z ${STRICTCOMPONENTS} ]; then
case $1 in
[Yy][Ee][Ss])
STRICTCOMPONENTS=yes
;;
[Nn][Oo])
STRICTCOMPONENTS=no
;;
*)
return 1
;;
esac
else
return 1
fi
}
# Upgrade to FreeBSD $1
config_TargetRelease () {
if [ -z ${TARGETRELEASE} ]; then
TARGETRELEASE=$1
else
return 1
fi
if echo ${TARGETRELEASE} | grep -qE '^[0-9.]+$'; then
TARGETRELEASE="${TARGETRELEASE}-RELEASE"
fi
}
# Define what happens to output of utilities
config_VerboseLevel () {
if [ -z ${VERBOSELEVEL} ]; then
case $1 in
[Dd][Ee][Bb][Uu][Gg])
VERBOSELEVEL=debug
;;
[Nn][Oo][Ss][Tt][Aa][Tt][Ss])
VERBOSELEVEL=nostats
;;
[Ss][Tt][Aa][Tt][Ss])
VERBOSELEVEL=stats
;;
*)
return 1
;;
esac
else
return 1
fi
}
config_BackupKernel () {
if [ -z ${BACKUPKERNEL} ]; then
case $1 in
[Yy][Ee][Ss])
BACKUPKERNEL=yes
;;
[Nn][Oo])
BACKUPKERNEL=no
;;
*)
return 1
;;
esac
else
return 1
fi
}
config_BackupKernelDir () {
if [ -z ${BACKUPKERNELDIR} ]; then
if [ -z "$1" ]; then
echo "BackupKernelDir set to empty dir"
return 1
fi
# We check for some paths which would be extremely odd
# to use, but which could cause a lot of problems if
# used.
case $1 in
/|/bin|/boot|/etc|/lib|/libexec|/sbin|/usr|/var)
echo "BackupKernelDir set to invalid path $1"
return 1
;;
/*)
BACKUPKERNELDIR=$1
;;
*)
echo "BackupKernelDir ($1) is not an absolute path"
return 1
;;
esac
else
return 1
fi
}
config_BackupKernelSymbolFiles () {
if [ -z ${BACKUPKERNELSYMBOLFILES} ]; then
case $1 in
[Yy][Ee][Ss])
BACKUPKERNELSYMBOLFILES=yes
;;
[Nn][Oo])
BACKUPKERNELSYMBOLFILES=no
;;
*)
return 1
;;
esac
else
return 1
fi
}
# Handle one line of configuration
configline () {
if [ $# -eq 0 ]; then
return
fi
OPT=$1
shift
config_${OPT} $@
}
#### Parameter handling functions.
# Initialize parameters to null, just in case they're
# set in the environment.
init_params () {
# Configration settings
nullconfig
# No configuration file set yet
CONFFILE=""
# No commands specified yet
COMMANDS=""
}
# Parse the command line
parse_cmdline () {
while [ $# -gt 0 ]; do
case "$1" in
# Location of configuration file
-f)
if [ $# -eq 1 ]; then usage; fi
if [ ! -z "${CONFFILE}" ]; then usage; fi
shift; CONFFILE="$1"
;;
# Configuration file equivalents
-b)
if [ $# -eq 1 ]; then usage; fi; shift
config_BaseDir $1 || usage
;;
-d)
if [ $# -eq 1 ]; then usage; fi; shift
config_WorkDir $1 || usage
;;
-k)
if [ $# -eq 1 ]; then usage; fi; shift
config_KeyPrint $1 || usage
;;
-s)
if [ $# -eq 1 ]; then usage; fi; shift
config_ServerName $1 || usage
;;
-r)
if [ $# -eq 1 ]; then usage; fi; shift
config_TargetRelease $1 || usage
;;
-t)
if [ $# -eq 1 ]; then usage; fi; shift
config_MailTo $1 || usage
;;
-v)
if [ $# -eq 1 ]; then usage; fi; shift
config_VerboseLevel $1 || usage
;;
# Aliases for "-v debug" and "-v nostats"
--debug)
config_VerboseLevel debug || usage
;;
--no-stats)
config_VerboseLevel nostats || usage
;;
# Commands
cron | fetch | upgrade | install | rollback | IDS)
COMMANDS="${COMMANDS} $1"
;;
# Anything else is an error
*)
usage
;;
esac
shift
done
# Make sure we have at least one command
if [ -z "${COMMANDS}" ]; then
usage
fi
}
# Parse the configuration file
parse_conffile () {
# If a configuration file was specified on the command line, check
# that it exists and is readable.
if [ ! -z "${CONFFILE}" ] && [ ! -r "${CONFFILE}" ]; then
echo -n "File does not exist "
echo -n "or is not readable: "
echo ${CONFFILE}
exit 1
fi
# If a configuration file was not specified on the command line,
# use the default configuration file path. If that default does
# not exist, give up looking for any configuration.
if [ -z "${CONFFILE}" ]; then
CONFFILE="/etc/freebsd-update.conf"
if [ ! -r "${CONFFILE}" ]; then
return
fi
fi
# Save the configuration options specified on the command line, and
# clear all the options in preparation for reading the config file.
saveconfig
nullconfig
# Read the configuration file. Anything after the first '#' is
# ignored, and any blank lines are ignored.
L=0
while read LINE; do
L=$(($L + 1))
LINEX=`echo "${LINE}" | cut -f 1 -d '#'`
if ! configline ${LINEX}; then
echo "Error processing configuration file, line $L:"
echo "==> ${LINE}"
exit 1
fi
done < ${CONFFILE}
# Merge the settings read from the configuration file with those
# provided at the command line.
mergeconfig
}
# Provide some default parameters
default_params () {
# Save any parameters already configured, and clear the slate
saveconfig
nullconfig
# Default configurations
config_WorkDir /var/db/freebsd-update
config_MailTo root
config_AllowAdd yes
config_AllowDelete yes
config_KeepModifiedMetadata yes
config_BaseDir /
config_VerboseLevel stats
config_StrictComponents no
config_BackupKernel yes
config_BackupKernelDir /boot/kernel.old
config_BackupKernelSymbolFiles no
# Merge these defaults into the earlier-configured settings
mergeconfig
}
# Set utility output filtering options, based on ${VERBOSELEVEL}
fetch_setup_verboselevel () {
case ${VERBOSELEVEL} in
debug)
QUIETREDIR="/dev/stderr"
QUIETFLAG=" "
STATSREDIR="/dev/stderr"
DDSTATS=".."
XARGST="-t"
NDEBUG=" "
;;
nostats)
QUIETREDIR=""
QUIETFLAG=""
STATSREDIR="/dev/null"
DDSTATS=".."
XARGST=""
NDEBUG=""
;;
stats)
QUIETREDIR="/dev/null"
QUIETFLAG="-q"
STATSREDIR="/dev/stdout"
DDSTATS=""
XARGST=""
NDEBUG="-n"
;;
esac
}
# Perform sanity checks and set some final parameters
# in preparation for fetching files. Figure out which
# set of updates should be downloaded: If the user is
# running *-p[0-9]+, strip off the last part; if the
# user is running -SECURITY, call it -RELEASE. Chdir
# into the working directory.
fetchupgrade_check_params () {
export HTTP_USER_AGENT="freebsd-update (${COMMAND}, `uname -r`)"
_SERVERNAME_z=\
"SERVERNAME must be given via command line or configuration file."
_KEYPRINT_z="Key must be given via -k option or configuration file."
_KEYPRINT_bad="Invalid key fingerprint: "
_WORKDIR_bad="Directory does not exist or is not writable: "
if [ -z "${SERVERNAME}" ]; then
echo -n "`basename $0`: "
echo "${_SERVERNAME_z}"
exit 1
fi
if [ -z "${KEYPRINT}" ]; then
echo -n "`basename $0`: "
echo "${_KEYPRINT_z}"
exit 1
fi
if ! echo "${KEYPRINT}" | grep -qE "^[0-9a-f]{64}$"; then
echo -n "`basename $0`: "
echo -n "${_KEYPRINT_bad}"
echo ${KEYPRINT}
exit 1
fi
if ! [ -d "${WORKDIR}" -a -w "${WORKDIR}" ]; then
echo -n "`basename $0`: "
echo -n "${_WORKDIR_bad}"
echo ${WORKDIR}
exit 1
fi
chmod 700 ${WORKDIR}
cd ${WORKDIR} || exit 1
# Generate release number. The s/SECURITY/RELEASE/ bit exists
# to provide an upgrade path for FreeBSD Update 1.x users, since
# the kernels provided by FreeBSD Update 1.x are always labelled
# as X.Y-SECURITY.
RELNUM=`uname -r |
sed -E 's,-p[0-9]+,,' |
sed -E 's,-SECURITY,-RELEASE,'`
ARCH=`uname -m`
FETCHDIR=${RELNUM}/${ARCH}
PATCHDIR=${RELNUM}/${ARCH}/bp
# Figure out what directory contains the running kernel
BOOTFILE=`sysctl -n kern.bootfile`
KERNELDIR=${BOOTFILE%/kernel}
if ! [ -d ${KERNELDIR} ]; then
echo "Cannot identify running kernel"
exit 1
fi
# Figure out what kernel configuration is running. We start with
# the output of `uname -i`, and then make the following adjustments:
# 1. Replace "SMP-GENERIC" with "SMP". Why the SMP kernel config
# file says "ident SMP-GENERIC", I don't know...
# 2. If the kernel claims to be GENERIC _and_ ${ARCH} is "amd64"
# _and_ `sysctl kern.version` contains a line which ends "/SMP", then
# we're running an SMP kernel. This mis-identification is a bug
# which was fixed in 6.2-STABLE.
KERNCONF=`uname -i`
if [ ${KERNCONF} = "SMP-GENERIC" ]; then
KERNCONF=SMP
fi
if [ ${KERNCONF} = "GENERIC" ] && [ ${ARCH} = "amd64" ]; then
if sysctl kern.version | grep -qE '/SMP$'; then
KERNCONF=SMP
fi
fi
# Define some paths
BSPATCH=/usr/bin/bspatch
SHA256=/sbin/sha256
PHTTPGET=/usr/libexec/phttpget
# Set up variables relating to VERBOSELEVEL
fetch_setup_verboselevel
# Construct a unique name from ${BASEDIR}
BDHASH=`echo ${BASEDIR} | sha256 -q`
}
# Perform sanity checks etc. before fetching updates.
fetch_check_params () {
fetchupgrade_check_params
if ! [ -z "${TARGETRELEASE}" ]; then
echo -n "`basename $0`: "
echo -n "-r option is meaningless with 'fetch' command. "
echo "(Did you mean 'upgrade' instead?)"
exit 1
fi
}
# Perform sanity checks etc. before fetching upgrades.
upgrade_check_params () {
fetchupgrade_check_params
# Unless set otherwise, we're upgrading to the same kernel config.
NKERNCONF=${KERNCONF}
# We need TARGETRELEASE set
_TARGETRELEASE_z="Release target must be specified via -r option."
if [ -z "${TARGETRELEASE}" ]; then
echo -n "`basename $0`: "
echo "${_TARGETRELEASE_z}"
exit 1
fi
# The target release should be != the current release.
if [ "${TARGETRELEASE}" = "${RELNUM}" ]; then
echo -n "`basename $0`: "
echo "Cannot upgrade from ${RELNUM} to itself"
exit 1
fi
# Turning off AllowAdd or AllowDelete is a bad idea for upgrades.
if [ "${ALLOWADD}" = "no" ]; then
echo -n "`basename $0`: "
echo -n "WARNING: \"AllowAdd no\" is a bad idea "
echo "when upgrading between releases."
echo
fi
if [ "${ALLOWDELETE}" = "no" ]; then
echo -n "`basename $0`: "
echo -n "WARNING: \"AllowDelete no\" is a bad idea "
echo "when upgrading between releases."
echo
fi
# Set EDITOR to /usr/bin/vi if it isn't already set
: ${EDITOR:='/usr/bin/vi'}
}
# Perform sanity checks and set some final parameters in
# preparation for installing updates.
install_check_params () {
# Check that we are root. All sorts of things won't work otherwise.
if [ `id -u` != 0 ]; then
echo "You must be root to run this."
exit 1
fi
# Check that securelevel <= 0. Otherwise we can't update schg files.
if [ `sysctl -n kern.securelevel` -gt 0 ]; then
echo "Updates cannot be installed when the system securelevel"
echo "is greater than zero."
exit 1
fi
# Check that we have a working directory
_WORKDIR_bad="Directory does not exist or is not writable: "
if ! [ -d "${WORKDIR}" -a -w "${WORKDIR}" ]; then
echo -n "`basename $0`: "
echo -n "${_WORKDIR_bad}"
echo ${WORKDIR}
exit 1
fi
cd ${WORKDIR} || exit 1
# Construct a unique name from ${BASEDIR}
BDHASH=`echo ${BASEDIR} | sha256 -q`
# Check that we have updates ready to install
if ! [ -L ${BDHASH}-install ]; then
echo "No updates are available to install."
echo "Run '$0 fetch' first."
exit 1
fi
if ! [ -f ${BDHASH}-install/INDEX-OLD ] ||
! [ -f ${BDHASH}-install/INDEX-NEW ]; then
echo "Update manifest is corrupt -- this should never happen."
echo "Re-run '$0 fetch'."
exit 1
fi
# Figure out what directory contains the running kernel
BOOTFILE=`sysctl -n kern.bootfile`
KERNELDIR=${BOOTFILE%/kernel}
if ! [ -d ${KERNELDIR} ]; then
echo "Cannot identify running kernel"
exit 1
fi
}
# Perform sanity checks and set some final parameters in
# preparation for UNinstalling updates.
rollback_check_params () {
# Check that we are root. All sorts of things won't work otherwise.
if [ `id -u` != 0 ]; then
echo "You must be root to run this."
exit 1
fi
# Check that we have a working directory
_WORKDIR_bad="Directory does not exist or is not writable: "
if ! [ -d "${WORKDIR}" -a -w "${WORKDIR}" ]; then
echo -n "`basename $0`: "
echo -n "${_WORKDIR_bad}"
echo ${WORKDIR}
exit 1
fi
cd ${WORKDIR} || exit 1
# Construct a unique name from ${BASEDIR}
BDHASH=`echo ${BASEDIR} | sha256 -q`
# Check that we have updates ready to rollback
if ! [ -L ${BDHASH}-rollback ]; then
echo "No rollback directory found."
exit 1
fi
if ! [ -f ${BDHASH}-rollback/INDEX-OLD ] ||
! [ -f ${BDHASH}-rollback/INDEX-NEW ]; then
echo "Update manifest is corrupt -- this should never happen."
exit 1
fi
}
# Perform sanity checks and set some final parameters
# in preparation for comparing the system against the
# published index. Figure out which index we should
# compare against: If the user is running *-p[0-9]+,
# strip off the last part; if the user is running
# -SECURITY, call it -RELEASE. Chdir into the working
# directory.
IDS_check_params () {
export HTTP_USER_AGENT="freebsd-update (${COMMAND}, `uname -r`)"
_SERVERNAME_z=\
"SERVERNAME must be given via command line or configuration file."
_KEYPRINT_z="Key must be given via -k option or configuration file."
_KEYPRINT_bad="Invalid key fingerprint: "
_WORKDIR_bad="Directory does not exist or is not writable: "
if [ -z "${SERVERNAME}" ]; then
echo -n "`basename $0`: "
echo "${_SERVERNAME_z}"
exit 1
fi
if [ -z "${KEYPRINT}" ]; then
echo -n "`basename $0`: "
echo "${_KEYPRINT_z}"
exit 1
fi
if ! echo "${KEYPRINT}" | grep -qE "^[0-9a-f]{64}$"; then
echo -n "`basename $0`: "
echo -n "${_KEYPRINT_bad}"
echo ${KEYPRINT}
exit 1
fi
if ! [ -d "${WORKDIR}" -a -w "${WORKDIR}" ]; then
echo -n "`basename $0`: "
echo -n "${_WORKDIR_bad}"
echo ${WORKDIR}
exit 1
fi
cd ${WORKDIR} || exit 1
# Generate release number. The s/SECURITY/RELEASE/ bit exists
# to provide an upgrade path for FreeBSD Update 1.x users, since
# the kernels provided by FreeBSD Update 1.x are always labelled
# as X.Y-SECURITY.
RELNUM=`uname -r |
sed -E 's,-p[0-9]+,,' |
sed -E 's,-SECURITY,-RELEASE,'`
ARCH=`uname -m`
FETCHDIR=${RELNUM}/${ARCH}
PATCHDIR=${RELNUM}/${ARCH}/bp
# Figure out what directory contains the running kernel
BOOTFILE=`sysctl -n kern.bootfile`
KERNELDIR=${BOOTFILE%/kernel}
if ! [ -d ${KERNELDIR} ]; then
echo "Cannot identify running kernel"
exit 1
fi
# Figure out what kernel configuration is running. We start with
# the output of `uname -i`, and then make the following adjustments:
# 1. Replace "SMP-GENERIC" with "SMP". Why the SMP kernel config
# file says "ident SMP-GENERIC", I don't know...
# 2. If the kernel claims to be GENERIC _and_ ${ARCH} is "amd64"
# _and_ `sysctl kern.version` contains a line which ends "/SMP", then
# we're running an SMP kernel. This mis-identification is a bug
# which was fixed in 6.2-STABLE.
KERNCONF=`uname -i`
if [ ${KERNCONF} = "SMP-GENERIC" ]; then
KERNCONF=SMP
fi
if [ ${KERNCONF} = "GENERIC" ] && [ ${ARCH} = "amd64" ]; then
if sysctl kern.version | grep -qE '/SMP$'; then
KERNCONF=SMP
fi
fi
# Define some paths
SHA256=/sbin/sha256
PHTTPGET=/usr/libexec/phttpget
# Set up variables relating to VERBOSELEVEL
fetch_setup_verboselevel
}
#### Core functionality -- the actual work gets done here
# Use an SRV query to pick a server. If the SRV query doesn't provide
# a useful answer, use the server name specified by the user.
# Put another way... look up _http._tcp.${SERVERNAME} and pick a server
# from that; or if no servers are returned, use ${SERVERNAME}.
# This allows a user to specify "portsnap.freebsd.org" (in which case
# portsnap will select one of the mirrors) or "portsnap5.tld.freebsd.org"
# (in which case portsnap will use that particular server, since there
# won't be an SRV entry for that name).
#
# We ignore the Port field, since we are always going to use port 80.
# Fetch the mirror list, but do not pick a mirror yet. Returns 1 if
# no mirrors are available for any reason.
fetch_pick_server_init () {
: > serverlist_tried
# Check that host(1) exists (i.e., that the system wasn't built with the
# WITHOUT_BIND set) and don't try to find a mirror if it doesn't exist.
if ! which -s host; then
: > serverlist_full
return 1
fi
echo -n "Looking up ${SERVERNAME} mirrors... "
# Issue the SRV query and pull out the Priority, Weight, and Target fields.
# BIND 9 prints "$name has SRV record ..." while BIND 8 prints
# "$name server selection ..."; we allow either format.
MLIST="_http._tcp.${SERVERNAME}"
host -t srv "${MLIST}" |
sed -nE "s/${MLIST} (has SRV record|server selection) //p" |
cut -f 1,2,4 -d ' ' |
sed -e 's/\.$//' |
sort > serverlist_full
# If no records, give up -- we'll just use the server name we were given.
if [ `wc -l < serverlist_full` -eq 0 ]; then
echo "none found."
return 1
fi
# Report how many mirrors we found.
echo `wc -l < serverlist_full` "mirrors found."
# Generate a random seed for use in picking mirrors. If HTTP_PROXY
# is set, this will be used to generate the seed; otherwise, the seed
# will be random.
if [ -n "${HTTP_PROXY}${http_proxy}" ]; then
RANDVALUE=`sha256 -qs "${HTTP_PROXY}${http_proxy}" |
tr -d 'a-f' |
cut -c 1-9`
else
RANDVALUE=`jot -r 1 0 999999999`
fi
}
# Pick a mirror. Returns 1 if we have run out of mirrors to try.
fetch_pick_server () {
# Generate a list of not-yet-tried mirrors
sort serverlist_tried |
comm -23 serverlist_full - > serverlist
# Have we run out of mirrors?
if [ `wc -l < serverlist` -eq 0 ]; then
echo "No mirrors remaining, giving up."
return 1
fi
# Find the highest priority level (lowest numeric value).
SRV_PRIORITY=`cut -f 1 -d ' ' serverlist | sort -n | head -1`
# Add up the weights of the response lines at that priority level.
SRV_WSUM=0;
while read X; do
case "$X" in
${SRV_PRIORITY}\ *)
SRV_W=`echo $X | cut -f 2 -d ' '`
SRV_WSUM=$(($SRV_WSUM + $SRV_W))
;;
esac
done < serverlist
# If all the weights are 0, pretend that they are all 1 instead.
if [ ${SRV_WSUM} -eq 0 ]; then
SRV_WSUM=`grep -E "^${SRV_PRIORITY} " serverlist | wc -l`
SRV_W_ADD=1
else
SRV_W_ADD=0
fi
# Pick a value between 0 and the sum of the weights - 1
SRV_RND=`expr ${RANDVALUE} % ${SRV_WSUM}`
# Read through the list of mirrors and set SERVERNAME. Write the line
# corresponding to the mirror we selected into serverlist_tried so that
# we won't try it again.
while read X; do
case "$X" in
${SRV_PRIORITY}\ *)
SRV_W=`echo $X | cut -f 2 -d ' '`
SRV_W=$(($SRV_W + $SRV_W_ADD))
if [ $SRV_RND -lt $SRV_W ]; then
SERVERNAME=`echo $X | cut -f 3 -d ' '`
echo "$X" >> serverlist_tried
break
else
SRV_RND=$(($SRV_RND - $SRV_W))
fi
;;
esac
done < serverlist
}
# Take a list of ${oldhash}|${newhash} and output a list of needed patches,
# i.e., those for which we have ${oldhash} and don't have ${newhash}.
fetch_make_patchlist () {
grep -vE "^([0-9a-f]{64})\|\1$" |
tr '|' ' ' |
while read X Y; do
if [ -f "files/${Y}.gz" ] ||
[ ! -f "files/${X}.gz" ]; then
continue
fi
echo "${X}|${Y}"
done | uniq
}
# Print user-friendly progress statistics
fetch_progress () {
LNC=0
while read x; do
LNC=$(($LNC + 1))
if [ $(($LNC % 10)) = 0 ]; then
echo -n $LNC
elif [ $(($LNC % 2)) = 0 ]; then
echo -n .
fi
done
echo -n " "
}
# Function for asking the user if everything is ok
continuep () {
while read -p "Does this look reasonable (y/n)? " CONTINUE; do
case "${CONTINUE}" in
y*)
return 0
;;
n*)
return 1
;;
esac
done
}
# Initialize the working directory
workdir_init () {
mkdir -p files
touch tINDEX.present
}
# Check that we have a public key with an appropriate hash, or
# fetch the key if it doesn't exist. Returns 1 if the key has
# not yet been fetched.
fetch_key () {
if [ -r pub.ssl ] && [ `${SHA256} -q pub.ssl` = ${KEYPRINT} ]; then
return 0
fi
echo -n "Fetching public key from ${SERVERNAME}... "
rm -f pub.ssl
fetch ${QUIETFLAG} http://${SERVERNAME}/${FETCHDIR}/pub.ssl \
2>${QUIETREDIR} || true
if ! [ -r pub.ssl ]; then
echo "failed."
return 1
fi
if ! [ `${SHA256} -q pub.ssl` = ${KEYPRINT} ]; then
echo "key has incorrect hash."
rm -f pub.ssl
return 1
fi
echo "done."
}
# Fetch metadata signature, aka "tag".
fetch_tag () {
echo -n "Fetching metadata signature "
echo ${NDEBUG} "for ${RELNUM} from ${SERVERNAME}... "
rm -f latest.ssl
fetch ${QUIETFLAG} http://${SERVERNAME}/${FETCHDIR}/latest.ssl \
2>${QUIETREDIR} || true
if ! [ -r latest.ssl ]; then
echo "failed."
return 1
fi
openssl rsautl -pubin -inkey pub.ssl -verify \
< latest.ssl > tag.new 2>${QUIETREDIR} || true
rm latest.ssl
if ! [ `wc -l < tag.new` = 1 ] ||
! grep -qE \
"^freebsd-update\|${ARCH}\|${RELNUM}\|[0-9]+\|[0-9a-f]{64}\|[0-9]{10}" \
tag.new; then
echo "invalid signature."
return 1
fi
echo "done."
RELPATCHNUM=`cut -f 4 -d '|' < tag.new`
TINDEXHASH=`cut -f 5 -d '|' < tag.new`
EOLTIME=`cut -f 6 -d '|' < tag.new`
}
# Sanity-check the patch number in a tag, to make sure that we're not
# going to "update" backwards and to prevent replay attacks.
fetch_tagsanity () {
# Check that we're not going to move from -pX to -pY with Y < X.
RELPX=`uname -r | sed -E 's,.*-,,'`
if echo ${RELPX} | grep -qE '^p[0-9]+$'; then
RELPX=`echo ${RELPX} | cut -c 2-`
else
RELPX=0
fi
if [ "${RELPATCHNUM}" -lt "${RELPX}" ]; then
echo
echo -n "Files on mirror (${RELNUM}-p${RELPATCHNUM})"
echo " appear older than what"
echo "we are currently running (`uname -r`)!"
echo "Cowardly refusing to proceed any further."
return 1
fi
# If "tag" exists and corresponds to ${RELNUM}, make sure that
# it contains a patch number <= RELPATCHNUM, in order to protect
# against rollback (replay) attacks.
if [ -f tag ] &&
grep -qE \
"^freebsd-update\|${ARCH}\|${RELNUM}\|[0-9]+\|[0-9a-f]{64}\|[0-9]{10}" \
tag; then
LASTRELPATCHNUM=`cut -f 4 -d '|' < tag`
if [ "${RELPATCHNUM}" -lt "${LASTRELPATCHNUM}" ]; then
echo
echo -n "Files on mirror (${RELNUM}-p${RELPATCHNUM})"
echo " are older than the"
echo -n "most recently seen updates"
echo " (${RELNUM}-p${LASTRELPATCHNUM})."
echo "Cowardly refusing to proceed any further."
return 1
fi
fi
}
# Fetch metadata index file
fetch_metadata_index () {
echo ${NDEBUG} "Fetching metadata index... "
rm -f ${TINDEXHASH}
fetch ${QUIETFLAG} http://${SERVERNAME}/${FETCHDIR}/t/${TINDEXHASH}
2>${QUIETREDIR}
if ! [ -f ${TINDEXHASH} ]; then
echo "failed."
return 1
fi
if [ `${SHA256} -q ${TINDEXHASH}` != ${TINDEXHASH} ]; then
echo "update metadata index corrupt."
return 1
fi
echo "done."
}
# Print an error message about signed metadata being bogus.
fetch_metadata_bogus () {
echo
echo "The update metadata$1 is correctly signed, but"
echo "failed an integrity check."
echo "Cowardly refusing to proceed any further."
return 1
}
# Construct tINDEX.new by merging the lines named in $1 from ${TINDEXHASH}
# with the lines not named in $@ from tINDEX.present (if that file exists).
fetch_metadata_index_merge () {
for METAFILE in $@; do
if [ `grep -E "^${METAFILE}\|" ${TINDEXHASH} | wc -l` \
-ne 1 ]; then
fetch_metadata_bogus " index"
return 1
fi
grep -E "${METAFILE}\|" ${TINDEXHASH}
done |
sort > tINDEX.wanted
if [ -f tINDEX.present ]; then
join -t '|' -v 2 tINDEX.wanted tINDEX.present |
sort -m - tINDEX.wanted > tINDEX.new
rm tINDEX.wanted
else
mv tINDEX.wanted tINDEX.new
fi
}
# Sanity check all the lines of tINDEX.new. Even if more metadata lines
# are added by future versions of the server, this won't cause problems,
# since the only lines which appear in tINDEX.new are the ones which we
# specifically grepped out of ${TINDEXHASH}.
fetch_metadata_index_sanity () {
if grep -qvE '^[0-9A-Z.-]+\|[0-9a-f]{64}$' tINDEX.new; then
fetch_metadata_bogus " index"
return 1
fi
}
# Sanity check the metadata file $1.
fetch_metadata_sanity () {
# Some aliases to save space later: ${P} is a character which can
# appear in a path; ${M} is the four numeric metadata fields; and
# ${H} is a sha256 hash.
P="[-+./:=%@_[[:alnum:]]"
M="[0-9]+\|[0-9]+\|[0-9]+\|[0-9]+"
H="[0-9a-f]{64}"
# Check that the first four fields make sense.
if gunzip -c < files/$1.gz |
grep -qvE "^[a-z]+\|[0-9a-z]+\|${P}+\|[fdL-]\|"; then
fetch_metadata_bogus ""
return 1
fi
# Remove the first three fields.
gunzip -c < files/$1.gz |
cut -f 4- -d '|' > sanitycheck.tmp
# Sanity check entries with type 'f'
if grep -E '^f' sanitycheck.tmp |
grep -qvE "^f\|${M}\|${H}\|${P}*\$"; then
fetch_metadata_bogus ""
return 1
fi
# Sanity check entries with type 'd'
if grep -E '^d' sanitycheck.tmp |
grep -qvE "^d\|${M}\|\|\$"; then
fetch_metadata_bogus ""
return 1
fi
# Sanity check entries with type 'L'
if grep -E '^L' sanitycheck.tmp |
grep -qvE "^L\|${M}\|${P}*\|\$"; then
fetch_metadata_bogus ""
return 1
fi
# Sanity check entries with type '-'
if grep -E '^-' sanitycheck.tmp |
grep -qvE "^-\|\|\|\|\|\|"; then
fetch_metadata_bogus ""
return 1
fi
# Clean up
rm sanitycheck.tmp
}
# Fetch the metadata index and metadata files listed in $@,
# taking advantage of metadata patches where possible.
fetch_metadata () {
fetch_metadata_index || return 1
fetch_metadata_index_merge $@ || return 1
fetch_metadata_index_sanity || return 1
# Generate a list of wanted metadata patches
join -t '|' -o 1.2,2.2 tINDEX.present tINDEX.new |
fetch_make_patchlist > patchlist
if [ -s patchlist ]; then
# Attempt to fetch metadata patches
echo -n "Fetching `wc -l < patchlist | tr -d ' '` "
echo ${NDEBUG} "metadata patches.${DDSTATS}"
tr '|' '-' < patchlist |
lam -s "${FETCHDIR}/tp/" - -s ".gz" |
xargs ${XARGST} ${PHTTPGET} ${SERVERNAME} \
2>${STATSREDIR} | fetch_progress
echo "done."
# Attempt to apply metadata patches
echo -n "Applying metadata patches... "
tr '|' ' ' < patchlist |
while read X Y; do
if [ ! -f "${X}-${Y}.gz" ]; then continue; fi
gunzip -c < ${X}-${Y}.gz > diff
gunzip -c < files/${X}.gz > diff-OLD
# Figure out which lines are being added and removed
grep -E '^-' diff |
cut -c 2- |
while read PREFIX; do
look "${PREFIX}" diff-OLD
done |
sort > diff-rm
grep -E '^\+' diff |
cut -c 2- > diff-add
# Generate the new file
comm -23 diff-OLD diff-rm |
sort - diff-add > diff-NEW
if [ `${SHA256} -q diff-NEW` = ${Y} ]; then
mv diff-NEW files/${Y}
gzip -n files/${Y}
else
mv diff-NEW ${Y}.bad
fi
rm -f ${X}-${Y}.gz diff
rm -f diff-OLD diff-NEW diff-add diff-rm
done 2>${QUIETREDIR}
echo "done."
fi
# Update metadata without patches
cut -f 2 -d '|' < tINDEX.new |
while read Y; do
if [ ! -f "files/${Y}.gz" ]; then
echo ${Y};
fi
done |
sort -u > filelist
if [ -s filelist ]; then
echo -n "Fetching `wc -l < filelist | tr -d ' '` "
echo ${NDEBUG} "metadata files... "
lam -s "${FETCHDIR}/m/" - -s ".gz" < filelist |
xargs ${XARGST} ${PHTTPGET} ${SERVERNAME} \
2>${QUIETREDIR}
while read Y; do
if ! [ -f ${Y}.gz ]; then
echo "failed."
return 1
fi
if [ `gunzip -c < ${Y}.gz |
${SHA256} -q` = ${Y} ]; then
mv ${Y}.gz files/${Y}.gz
else
echo "metadata is corrupt."
return 1
fi
done < filelist
echo "done."
fi
# Sanity-check the metadata files.
cut -f 2 -d '|' tINDEX.new > filelist
while read X; do
fetch_metadata_sanity ${X} || return 1
done < filelist
# Remove files which are no longer needed
cut -f 2 -d '|' tINDEX.present |
sort > oldfiles
cut -f 2 -d '|' tINDEX.new |
sort |
comm -13 - oldfiles |
lam -s "files/" - -s ".gz" |
xargs rm -f
rm patchlist filelist oldfiles
rm ${TINDEXHASH}
# We're done!
mv tINDEX.new tINDEX.present
mv tag.new tag
return 0
}
# Extract a subset of a downloaded metadata file containing only the parts
# which are listed in COMPONENTS.
fetch_filter_metadata_components () {
METAHASH=`look "$1|" tINDEX.present | cut -f 2 -d '|'`
gunzip -c < files/${METAHASH}.gz > $1.all
# Fish out the lines belonging to components we care about.
for C in ${COMPONENTS}; do
look "`echo ${C} | tr '/' '|'`|" $1.all
done > $1
# Remove temporary file.
rm $1.all
}
# Generate a filtered version of the metadata file $1 from the downloaded
# file, by fishing out the lines corresponding to components we're trying
# to keep updated, and then removing lines corresponding to paths we want
# to ignore.
fetch_filter_metadata () {
# Fish out the lines belonging to components we care about.
fetch_filter_metadata_components $1
# Canonicalize directory names by removing any trailing / in
# order to avoid listing directories multiple times if they
# belong to multiple components. Turning "/" into "" doesn't
# matter, since we add a leading "/" when we use paths later.
cut -f 3- -d '|' $1 |
sed -e 's,/|d|,|d|,' |
sort -u > $1.tmp
# Figure out which lines to ignore and remove them.
for X in ${IGNOREPATHS}; do
grep -E "^${X}" $1.tmp
done |
sort -u |
comm -13 - $1.tmp > $1
# Remove temporary files.
rm $1.tmp
}
# Filter the metadata file $1 by adding lines with "/boot/$2"
# replaced by ${KERNELDIR} (which is `sysctl -n kern.bootfile` minus the
# trailing "/kernel"); and if "/boot/$2" does not exist, remove
# the original lines which start with that.
# Put another way: Deal with the fact that the FOO kernel is sometimes
# installed in /boot/FOO/ and is sometimes installed elsewhere.
fetch_filter_kernel_names () {
grep ^/boot/$2 $1 |
sed -e "s,/boot/$2,${KERNELDIR},g" |
sort - $1 > $1.tmp
mv $1.tmp $1
if ! [ -d /boot/$2 ]; then
grep -v ^/boot/$2 $1 > $1.tmp
mv $1.tmp $1
fi
}
# For all paths appearing in $1 or $3, inspect the system
# and generate $2 describing what is currently installed.
fetch_inspect_system () {
# No errors yet...
rm -f .err
# Tell the user why his disk is suddenly making lots of noise
echo -n "Inspecting system... "
# Generate list of files to inspect
cat $1 $3 |
cut -f 1 -d '|' |
sort -u > filelist
# Examine each file and output lines of the form
# /path/to/file|type|device-inum|user|group|perm|flags|value
# sorted by device and inode number.
while read F; do
# If the symlink/file/directory does not exist, record this.
if ! [ -e ${BASEDIR}/${F} ]; then
echo "${F}|-||||||"
continue
fi
if ! [ -r ${BASEDIR}/${F} ]; then
echo "Cannot read file: ${BASEDIR}/${F}" \
>/dev/stderr
touch .err
return 1
fi
# Otherwise, output an index line.
if [ -L ${BASEDIR}/${F} ]; then
echo -n "${F}|L|"
stat -n -f '%d-%i|%u|%g|%Mp%Lp|%Of|' ${BASEDIR}/${F};
readlink ${BASEDIR}/${F};
elif [ -f ${BASEDIR}/${F} ]; then
echo -n "${F}|f|"
stat -n -f '%d-%i|%u|%g|%Mp%Lp|%Of|' ${BASEDIR}/${F};
sha256 -q ${BASEDIR}/${F};
elif [ -d ${BASEDIR}/${F} ]; then
echo -n "${F}|d|"
stat -f '%d-%i|%u|%g|%Mp%Lp|%Of|' ${BASEDIR}/${F};
else
echo "Unknown file type: ${BASEDIR}/${F}" \
>/dev/stderr
touch .err
return 1
fi
done < filelist |
sort -k 3,3 -t '|' > $2.tmp
rm filelist
# Check if an error occurred during system inspection
if [ -f .err ]; then
return 1
fi
# Convert to the form
# /path/to/file|type|user|group|perm|flags|value|hlink
# by resolving identical device and inode numbers into hard links.
cut -f 1,3 -d '|' $2.tmp |
sort -k 1,1 -t '|' |
sort -s -u -k 2,2 -t '|' |
join -1 2 -2 3 -t '|' - $2.tmp |
awk -F \| -v OFS=\| \
'{
if (($2 == $3) || ($4 == "-"))
print $3,$4,$5,$6,$7,$8,$9,""
else
print $3,$4,$5,$6,$7,$8,$9,$2
}' |
sort > $2
rm $2.tmp
# We're finished looking around
echo "done."
}
# For any paths matching ${MERGECHANGES}, compare $1 and $2 and find any
# files which differ; generate $3 containing these paths and the old hashes.
fetch_filter_mergechanges () {
# Pull out the paths and hashes of the files matching ${MERGECHANGES}.
for F in $1 $2; do
for X in ${MERGECHANGES}; do
grep -E "^${X}" ${F}
done |
cut -f 1,2,7 -d '|' |
sort > ${F}-values
done
# Any line in $2-values which doesn't appear in $1-values and is a
# file means that we should list the path in $3.
comm -13 $1-values $2-values |
fgrep '|f|' |
cut -f 1 -d '|' > $2-paths
# For each path, pull out one (and only one!) entry from $1-values.
# Note that we cannot distinguish which "old" version the user made
# changes to; but hopefully any changes which occur due to security
# updates will exist in both the "new" version and the version which
# the user has installed, so the merging will still work.
while read X; do
look "${X}|" $1-values |
head -1
done < $2-paths > $3
# Clean up
rm $1-values $2-values $2-paths
}
# For any paths matching ${UPDATEIFUNMODIFIED}, remove lines from $[123]
# which correspond to lines in $2 with hashes not matching $1 or $3, unless
# the paths are listed in $4. For entries in $2 marked "not present"
# (aka. type -), remove lines from $[123] unless there is a corresponding
# entry in $1.
fetch_filter_unmodified_notpresent () {
# Figure out which lines of $1 and $3 correspond to bits which
# should only be updated if they haven't changed, and fish out
# the (path, type, value) tuples.
# NOTE: We don't consider a file to be "modified" if it matches
# the hash from $3.
for X in ${UPDATEIFUNMODIFIED}; do
grep -E "^${X}" $1
grep -E "^${X}" $3
done |
cut -f 1,2,7 -d '|' |
sort > $1-values
# Do the same for $2.
for X in ${UPDATEIFUNMODIFIED}; do
grep -E "^${X}" $2
done |
cut -f 1,2,7 -d '|' |
sort > $2-values
# Any entry in $2-values which is not in $1-values corresponds to
# a path which we need to remove from $1, $2, and $3, unless it
# that path appears in $4.
comm -13 $1-values $2-values |
sort -t '|' -k 1,1 > mlines.tmp
cut -f 1 -d '|' $4 |
sort |
join -v 2 -t '|' - mlines.tmp |
sort > mlines
rm $1-values $2-values mlines.tmp
# Any lines in $2 which are not in $1 AND are "not present" lines
# also belong in mlines.
comm -13 $1 $2 |
cut -f 1,2,7 -d '|' |
fgrep '|-|' >> mlines
# Remove lines from $1, $2, and $3
for X in $1 $2 $3; do
sort -t '|' -k 1,1 ${X} > ${X}.tmp
cut -f 1 -d '|' < mlines |
sort |
join -v 2 -t '|' - ${X}.tmp |
sort > ${X}
rm ${X}.tmp
done
# Store a list of the modified files, for future reference
fgrep -v '|-|' mlines |
cut -f 1 -d '|' > modifiedfiles
rm mlines
}
# For each entry in $1 of type -, remove any corresponding
# entry from $2 if ${ALLOWADD} != "yes". Remove all entries
# of type - from $1.
fetch_filter_allowadd () {
cut -f 1,2 -d '|' < $1 |
fgrep '|-' |
cut -f 1 -d '|' > filesnotpresent
if [ ${ALLOWADD} != "yes" ]; then
sort < $2 |
join -v 1 -t '|' - filesnotpresent |
sort > $2.tmp
mv $2.tmp $2
fi
sort < $1 |
join -v 1 -t '|' - filesnotpresent |
sort > $1.tmp
mv $1.tmp $1
rm filesnotpresent
}
# If ${ALLOWDELETE} != "yes", then remove any entries from $1
# which don't correspond to entries in $2.
fetch_filter_allowdelete () {
# Produce a lists ${PATH}|${TYPE}
for X in $1 $2; do
cut -f 1-2 -d '|' < ${X} |
sort -u > ${X}.nodes
done
# Figure out which lines need to be removed from $1.
if [ ${ALLOWDELETE} != "yes" ]; then
comm -23 $1.nodes $2.nodes > $1.badnodes
else
: > $1.badnodes
fi
# Remove the relevant lines from $1
while read X; do
look "${X}|" $1
done < $1.badnodes |
comm -13 - $1 > $1.tmp
mv $1.tmp $1
rm $1.badnodes $1.nodes $2.nodes
}
# If ${KEEPMODIFIEDMETADATA} == "yes", then for each entry in $2
# with metadata not matching any entry in $1, replace the corresponding
# line of $3 with one having the same metadata as the entry in $2.
fetch_filter_modified_metadata () {
# Fish out the metadata from $1 and $2
for X in $1 $2; do
cut -f 1-6 -d '|' < ${X} > ${X}.metadata
done
# Find the metadata we need to keep
if [ ${KEEPMODIFIEDMETADATA} = "yes" ]; then
comm -13 $1.metadata $2.metadata > keepmeta
else
: > keepmeta
fi
# Extract the lines which we need to remove from $3, and
# construct the lines which we need to add to $3.
: > $3.remove
: > $3.add
while read LINE; do
NODE=`echo "${LINE}" | cut -f 1-2 -d '|'`
look "${NODE}|" $3 >> $3.remove
look "${NODE}|" $3 |
cut -f 7- -d '|' |
lam -s "${LINE}|" - >> $3.add
done < keepmeta
# Remove the specified lines and add the new lines.
sort $3.remove |
comm -13 - $3 |
sort -u - $3.add > $3.tmp
mv $3.tmp $3
rm keepmeta $1.metadata $2.metadata $3.add $3.remove
}
# Remove lines from $1 and $2 which are identical;
# no need to update a file if it isn't changing.
fetch_filter_uptodate () {
comm -23 $1 $2 > $1.tmp
comm -13 $1 $2 > $2.tmp
mv $1.tmp $1
mv $2.tmp $2
}
# Fetch any "clean" old versions of files we need for merging changes.
fetch_files_premerge () {
# We only need to do anything if $1 is non-empty.
if [ -s $1 ]; then
# Tell the user what we're doing
echo -n "Fetching files from ${OLDRELNUM} for merging... "
# List of files wanted
fgrep '|f|' < $1 |
cut -f 3 -d '|' |
sort -u > files.wanted
# Only fetch the files we don't already have
while read Y; do
if [ ! -f "files/${Y}.gz" ]; then
echo ${Y};
fi
done < files.wanted > filelist
# Actually fetch them
lam -s "${OLDFETCHDIR}/f/" - -s ".gz" < filelist |
xargs ${XARGST} ${PHTTPGET} ${SERVERNAME} \
2>${QUIETREDIR}
# Make sure we got them all, and move them into /files/
while read Y; do
if ! [ -f ${Y}.gz ]; then
echo "failed."
return 1
fi
if [ `gunzip -c < ${Y}.gz |
${SHA256} -q` = ${Y} ]; then
mv ${Y}.gz files/${Y}.gz
else
echo "${Y} has incorrect hash."
return 1
fi
done < filelist
echo "done."
# Clean up
rm filelist files.wanted
fi
}
# Prepare to fetch files: Generate a list of the files we need,
# copy the unmodified files we have into /files/, and generate
# a list of patches to download.
fetch_files_prepare () {
# Tell the user why his disk is suddenly making lots of noise
echo -n "Preparing to download files... "
# Reduce indices to ${PATH}|${HASH} pairs
for X in $1 $2 $3; do
cut -f 1,2,7 -d '|' < ${X} |
fgrep '|f|' |
cut -f 1,3 -d '|' |
sort > ${X}.hashes
done
# List of files wanted
cut -f 2 -d '|' < $3.hashes |
sort -u |
while read HASH; do
if ! [ -f files/${HASH}.gz ]; then
echo ${HASH}
fi
done > files.wanted
# Generate a list of unmodified files
comm -12 $1.hashes $2.hashes |
sort -k 1,1 -t '|' > unmodified.files
# Copy all files into /files/. We only need the unmodified files
# for use in patching; but we'll want all of them if the user asks
# to rollback the updates later.
while read LINE; do
F=`echo "${LINE}" | cut -f 1 -d '|'`
HASH=`echo "${LINE}" | cut -f 2 -d '|'`
# Skip files we already have.
if [ -f files/${HASH}.gz ]; then
continue
fi
# Make sure the file hasn't changed.
cp "${BASEDIR}/${F}" tmpfile
if [ `sha256 -q tmpfile` != ${HASH} ]; then
echo
echo "File changed while FreeBSD Update running: ${F}"
return 1
fi
# Place the file into storage.
gzip -c < tmpfile > files/${HASH}.gz
rm tmpfile
done < $2.hashes
# Produce a list of patches to download
sort -k 1,1 -t '|' $3.hashes |
join -t '|' -o 2.2,1.2 - unmodified.files |
fetch_make_patchlist > patchlist
# Garbage collect
rm unmodified.files $1.hashes $2.hashes $3.hashes
# We don't need the list of possible old files any more.
rm $1
# We're finished making noise
echo "done."
}
# Fetch files.
fetch_files () {
# Attempt to fetch patches
if [ -s patchlist ]; then
echo -n "Fetching `wc -l < patchlist | tr -d ' '` "
echo ${NDEBUG} "patches.${DDSTATS}"
tr '|' '-' < patchlist |
lam -s "${PATCHDIR}/" - |
xargs ${XARGST} ${PHTTPGET} ${SERVERNAME} \
2>${STATSREDIR} | fetch_progress
echo "done."
# Attempt to apply patches
echo -n "Applying patches... "
tr '|' ' ' < patchlist |
while read X Y; do
if [ ! -f "${X}-${Y}" ]; then continue; fi
gunzip -c < files/${X}.gz > OLD
bspatch OLD NEW ${X}-${Y}
if [ `${SHA256} -q NEW` = ${Y} ]; then
mv NEW files/${Y}
gzip -n files/${Y}
fi
rm -f diff OLD NEW ${X}-${Y}
done 2>${QUIETREDIR}
echo "done."
fi
# Download files which couldn't be generate via patching
while read Y; do
if [ ! -f "files/${Y}.gz" ]; then
echo ${Y};
fi
done < files.wanted > filelist
if [ -s filelist ]; then
echo -n "Fetching `wc -l < filelist | tr -d ' '` "
echo ${NDEBUG} "files... "
lam -s "${FETCHDIR}/f/" - -s ".gz" < filelist |
xargs ${XARGST} ${PHTTPGET} ${SERVERNAME} \
2>${QUIETREDIR}
while read Y; do
if ! [ -f ${Y}.gz ]; then
echo "failed."
return 1
fi
if [ `gunzip -c < ${Y}.gz |
${SHA256} -q` = ${Y} ]; then
mv ${Y}.gz files/${Y}.gz
else
echo "${Y} has incorrect hash."
return 1
fi
done < filelist
echo "done."
fi
# Clean up
rm files.wanted filelist patchlist
}
# Create and populate install manifest directory; and report what updates
# are available.
fetch_create_manifest () {
# If we have an existing install manifest, nuke it.
if [ -L "${BDHASH}-install" ]; then
rm -r ${BDHASH}-install/
rm ${BDHASH}-install
fi
# Report to the user if any updates were avoided due to local changes
if [ -s modifiedfiles ]; then
echo
echo -n "The following files are affected by updates, "
echo "but no changes have"
echo -n "been downloaded because the files have been "
echo "modified locally:"
cat modifiedfiles
fi | $PAGER
rm modifiedfiles
# If no files will be updated, tell the user and exit
if ! [ -s INDEX-PRESENT ] &&
! [ -s INDEX-NEW ]; then
rm INDEX-PRESENT INDEX-NEW
echo
echo -n "No updates needed to update system to "
echo "${RELNUM}-p${RELPATCHNUM}."
return
fi
# Divide files into (a) removed files, (b) added files, and
# (c) updated files.
cut -f 1 -d '|' < INDEX-PRESENT |
sort > INDEX-PRESENT.flist
cut -f 1 -d '|' < INDEX-NEW |
sort > INDEX-NEW.flist
comm -23 INDEX-PRESENT.flist INDEX-NEW.flist > files.removed
comm -13 INDEX-PRESENT.flist INDEX-NEW.flist > files.added
comm -12 INDEX-PRESENT.flist INDEX-NEW.flist > files.updated
rm INDEX-PRESENT.flist INDEX-NEW.flist
# Report removed files, if any
if [ -s files.removed ]; then
echo
echo -n "The following files will be removed "
echo "as part of updating to ${RELNUM}-p${RELPATCHNUM}:"
cat files.removed
fi | $PAGER
rm files.removed
# Report added files, if any
if [ -s files.added ]; then
echo
echo -n "The following files will be added "
echo "as part of updating to ${RELNUM}-p${RELPATCHNUM}:"
cat files.added
fi | $PAGER
rm files.added
# Report updated files, if any
if [ -s files.updated ]; then
echo
echo -n "The following files will be updated "
echo "as part of updating to ${RELNUM}-p${RELPATCHNUM}:"
cat files.updated
fi | $PAGER
rm files.updated
# Create a directory for the install manifest.
MDIR=`mktemp -d install.XXXXXX` || return 1
# Populate it
mv INDEX-PRESENT ${MDIR}/INDEX-OLD
mv INDEX-NEW ${MDIR}/INDEX-NEW
# Link it into place
ln -s ${MDIR} ${BDHASH}-install
}
# Warn about any upcoming EoL
fetch_warn_eol () {
# What's the current time?
NOWTIME=`date "+%s"`
# When did we last warn about the EoL date?
if [ -f lasteolwarn ]; then
LASTWARN=`cat lasteolwarn`
else
LASTWARN=`expr ${NOWTIME} - 63072000`
fi
# If the EoL time is past, warn.
if [ ${EOLTIME} -lt ${NOWTIME} ]; then
echo
cat <<-EOF
WARNING: `uname -sr` HAS PASSED ITS END-OF-LIFE DATE.
Any security issues discovered after `date -r ${EOLTIME}`
will not have been corrected.
EOF
return 1
fi
# Figure out how long it has been since we last warned about the
# upcoming EoL, and how much longer we have left.
SINCEWARN=`expr ${NOWTIME} - ${LASTWARN}`
TIMELEFT=`expr ${EOLTIME} - ${NOWTIME}`
# Don't warn if the EoL is more than 3 months away
if [ ${TIMELEFT} -gt 7884000 ]; then
return 0
fi
# Don't warn if the time remaining is more than 3 times the time
# since the last warning.
if [ ${TIMELEFT} -gt `expr ${SINCEWARN} \* 3` ]; then
return 0
fi
# Figure out what time units to use.
if [ ${TIMELEFT} -lt 604800 ]; then
UNIT="day"
SIZE=86400
elif [ ${TIMELEFT} -lt 2678400 ]; then
UNIT="week"
SIZE=604800
else
UNIT="month"
SIZE=2678400
fi
# Compute the right number of units
NUM=`expr ${TIMELEFT} / ${SIZE}`
if [ ${NUM} != 1 ]; then
UNIT="${UNIT}s"
fi
# Print the warning
echo
cat <<-EOF
WARNING: `uname -sr` is approaching its End-of-Life date.
It is strongly recommended that you upgrade to a newer
release within the next ${NUM} ${UNIT}.
EOF
# Update the stored time of last warning
echo ${NOWTIME} > lasteolwarn
}
# Do the actual work involved in "fetch" / "cron".
fetch_run () {
workdir_init || return 1
# Prepare the mirror list.
fetch_pick_server_init && fetch_pick_server
# Try to fetch the public key until we run out of servers.
while ! fetch_key; do
fetch_pick_server || return 1
done
# Try to fetch the metadata index signature ("tag") until we run
# out of available servers; and sanity check the downloaded tag.
while ! fetch_tag; do
fetch_pick_server || return 1
done
fetch_tagsanity || return 1
# Fetch the latest INDEX-NEW and INDEX-OLD files.
fetch_metadata INDEX-NEW INDEX-OLD || return 1
# Generate filtered INDEX-NEW and INDEX-OLD files containing only
# the lines which (a) belong to components we care about, and (b)
# don't correspond to paths we're explicitly ignoring.
fetch_filter_metadata INDEX-NEW || return 1
fetch_filter_metadata INDEX-OLD || return 1
# Translate /boot/${KERNCONF} into ${KERNELDIR}
fetch_filter_kernel_names INDEX-NEW ${KERNCONF}
fetch_filter_kernel_names INDEX-OLD ${KERNCONF}
# For all paths appearing in INDEX-OLD or INDEX-NEW, inspect the
# system and generate an INDEX-PRESENT file.
fetch_inspect_system INDEX-OLD INDEX-PRESENT INDEX-NEW || return 1
# Based on ${UPDATEIFUNMODIFIED}, remove lines from INDEX-* which
# correspond to lines in INDEX-PRESENT with hashes not appearing
# in INDEX-OLD or INDEX-NEW. Also remove lines where the entry in
# INDEX-PRESENT has type - and there isn't a corresponding entry in
# INDEX-OLD with type -.
fetch_filter_unmodified_notpresent \
INDEX-OLD INDEX-PRESENT INDEX-NEW /dev/null
# For each entry in INDEX-PRESENT of type -, remove any corresponding
# entry from INDEX-NEW if ${ALLOWADD} != "yes". Remove all entries
# of type - from INDEX-PRESENT.
fetch_filter_allowadd INDEX-PRESENT INDEX-NEW
# If ${ALLOWDELETE} != "yes", then remove any entries from
# INDEX-PRESENT which don't correspond to entries in INDEX-NEW.
fetch_filter_allowdelete INDEX-PRESENT INDEX-NEW
# If ${KEEPMODIFIEDMETADATA} == "yes", then for each entry in
# INDEX-PRESENT with metadata not matching any entry in INDEX-OLD,
# replace the corresponding line of INDEX-NEW with one having the
# same metadata as the entry in INDEX-PRESENT.
fetch_filter_modified_metadata INDEX-OLD INDEX-PRESENT INDEX-NEW
# Remove lines from INDEX-PRESENT and INDEX-NEW which are identical;
# no need to update a file if it isn't changing.
fetch_filter_uptodate INDEX-PRESENT INDEX-NEW
# Prepare to fetch files: Generate a list of the files we need,
# copy the unmodified files we have into /files/, and generate
# a list of patches to download.
fetch_files_prepare INDEX-OLD INDEX-PRESENT INDEX-NEW || return 1
# Fetch files.
fetch_files || return 1
# Create and populate install manifest directory; and report what
# updates are available.
fetch_create_manifest || return 1
# Warn about any upcoming EoL
fetch_warn_eol || return 1
}
# If StrictComponents is not "yes", generate a new components list
# with only the components which appear to be installed.
upgrade_guess_components () {
if [ "${STRICTCOMPONENTS}" = "no" ]; then
# Generate filtered INDEX-ALL with only the components listed
# in COMPONENTS.
fetch_filter_metadata_components $1 || return 1
# Tell the user why his disk is suddenly making lots of noise
echo -n "Inspecting system... "
# Look at the files on disk, and assume that a component is
# supposed to be present if it is more than half-present.
cut -f 1-3 -d '|' < INDEX-ALL |
tr '|' ' ' |
while read C S F; do
if [ -e ${BASEDIR}/${F} ]; then
echo "+ ${C}|${S}"
fi
echo "= ${C}|${S}"
done |
sort |
uniq -c |
sed -E 's,^ +,,' > compfreq
grep ' = ' compfreq |
cut -f 1,3 -d ' ' |
sort -k 2,2 -t ' ' > compfreq.total
grep ' + ' compfreq |
cut -f 1,3 -d ' ' |
sort -k 2,2 -t ' ' > compfreq.present
join -t ' ' -1 2 -2 2 compfreq.present compfreq.total |
while read S P T; do
if [ ${P} -gt `expr ${T} / 2` ]; then
echo ${S}
fi
done > comp.present
cut -f 2 -d ' ' < compfreq.total > comp.total
rm INDEX-ALL compfreq compfreq.total compfreq.present
# We're done making noise.
echo "done."
# Sometimes the kernel isn't installed where INDEX-ALL
# thinks that it should be: In particular, it is often in
# /boot/kernel instead of /boot/GENERIC or /boot/SMP. To
# deal with this, if "kernel|X" is listed in comp.total
# (i.e., is a component which would be upgraded if it is
# found to be present) we will add it to comp.present.
# If "kernel|<anything>" is in comp.total but "kernel|X" is
# not, we print a warning -- the user is running a kernel
# which isn't part of the release.
KCOMP=`echo ${KERNCONF} | tr 'A-Z' 'a-z'`
grep -E "^kernel\|${KCOMP}\$" comp.total >> comp.present
if grep -qE "^kernel\|" comp.total &&
! grep -qE "^kernel\|${KCOMP}\$" comp.total; then
cat <<-EOF
WARNING: This system is running a "${KCOMP}" kernel, which is not a
kernel configuration distributed as part of FreeBSD ${RELNUM}.
This kernel will not be updated: you MUST update the kernel manually
before running "$0 install".
EOF
fi
# Re-sort the list of installed components and generate
# the list of non-installed components.
sort -u < comp.present > comp.present.tmp
mv comp.present.tmp comp.present
comm -13 comp.present comp.total > comp.absent
# Ask the user to confirm that what we have is correct. To
# reduce user confusion, translate "X|Y" back to "X/Y" (as
# subcomponents must be listed in the configuration file).
echo
echo -n "The following components of FreeBSD "
echo "seem to be installed:"
tr '|' '/' < comp.present |
fmt -72
echo
echo -n "The following components of FreeBSD "
echo "do not seem to be installed:"
tr '|' '/' < comp.absent |
fmt -72
echo
continuep || return 1
echo
# Suck the generated list of components into ${COMPONENTS}.
# Note that comp.present.tmp is used due to issues with
# pipelines and setting variables.
COMPONENTS=""
tr '|' '/' < comp.present > comp.present.tmp
while read C; do
COMPONENTS="${COMPONENTS} ${C}"
done < comp.present.tmp
# Delete temporary files
rm comp.present comp.present.tmp comp.absent comp.total
fi
}
# If StrictComponents is not "yes", COMPONENTS contains an entry
# corresponding to the currently running kernel, and said kernel
# does not exist in the new release, add "kernel/generic" to the
# list of components.
upgrade_guess_new_kernel () {
if [ "${STRICTCOMPONENTS}" = "no" ]; then
# Grab the unfiltered metadata file.
METAHASH=`look "$1|" tINDEX.present | cut -f 2 -d '|'`
gunzip -c < files/${METAHASH}.gz > $1.all
# If "kernel/${KCOMP}" is in ${COMPONENTS} and that component
# isn't in $1.all, we need to add kernel/generic.
for C in ${COMPONENTS}; do
if [ ${C} = "kernel/${KCOMP}" ] &&
! grep -qE "^kernel\|${KCOMP}\|" $1.all; then
COMPONENTS="${COMPONENTS} kernel/generic"
NKERNCONF="GENERIC"
cat <<-EOF
WARNING: This system is running a "${KCOMP}" kernel, which is not a
kernel configuration distributed as part of FreeBSD ${RELNUM}.
As part of upgrading to FreeBSD ${RELNUM}, this kernel will be
replaced with a "generic" kernel.
EOF
continuep || return 1
fi
done
# Don't need this any more...
rm $1.all
fi
}
# Convert INDEX-OLD (last release) and INDEX-ALL (new release) into
# INDEX-OLD and INDEX-NEW files (in the sense of normal upgrades).
upgrade_oldall_to_oldnew () {
# For each ${F}|... which appears in INDEX-ALL but does not appear
# in INDEX-OLD, add ${F}|-|||||| to INDEX-OLD.
cut -f 1 -d '|' < $1 |
sort -u > $1.paths
cut -f 1 -d '|' < $2 |
sort -u |
comm -13 $1.paths - |
lam - -s "|-||||||" |
sort - $1 > $1.tmp
mv $1.tmp $1
# Remove lines from INDEX-OLD which also appear in INDEX-ALL
comm -23 $1 $2 > $1.tmp
mv $1.tmp $1
# Remove lines from INDEX-ALL which have a file name not appearing
# anywhere in INDEX-OLD (since these must be files which haven't
# changed -- if they were new, there would be an entry of type "-").
cut -f 1 -d '|' < $1 |
sort -u > $1.paths
sort -k 1,1 -t '|' < $2 |
join -t '|' - $1.paths |
sort > $2.tmp
rm $1.paths
mv $2.tmp $2
# Rename INDEX-ALL to INDEX-NEW.
mv $2 $3
}
# Helper for upgrade_merge: Return zero true iff the two files differ only
# in the contents of their $FreeBSD$ tags.
samef () {
X=`sed -E 's/\\$FreeBSD.*\\$/\$FreeBSD\$/' < $1 | ${SHA256}`
Y=`sed -E 's/\\$FreeBSD.*\\$/\$FreeBSD\$/' < $2 | ${SHA256}`
if [ $X = $Y ]; then
return 0;
else
return 1;
fi
}
# From the list of "old" files in $1, merge changes in $2 with those in $3,
# and update $3 to reflect the hashes of merged files.
upgrade_merge () {
# We only need to do anything if $1 is non-empty.
if [ -s $1 ]; then
cut -f 1 -d '|' $1 |
sort > $1-paths
# Create staging area for merging files
rm -rf merge/
while read F; do
D=`dirname ${F}`
mkdir -p merge/old/${D}
mkdir -p merge/${OLDRELNUM}/${D}
mkdir -p merge/${RELNUM}/${D}
mkdir -p merge/new/${D}
done < $1-paths
# Copy in files
while read F; do
# Currently installed file
V=`look "${F}|" $2 | cut -f 7 -d '|'`
gunzip < files/${V}.gz > merge/old/${F}
# Old release
if look "${F}|" $1 | fgrep -q "|f|"; then
V=`look "${F}|" $1 | cut -f 3 -d '|'`
gunzip < files/${V}.gz \
> merge/${OLDRELNUM}/${F}
fi
# New release
if look "${F}|" $3 | cut -f 1,2,7 -d '|' |
fgrep -q "|f|"; then
V=`look "${F}|" $3 | cut -f 7 -d '|'`
gunzip < files/${V}.gz \
> merge/${RELNUM}/${F}
fi
done < $1-paths
# Attempt to automatically merge changes
echo -n "Attempting to automatically merge "
echo -n "changes in files..."
: > failed.merges
while read F; do
# If the file doesn't exist in the new release,
# the result of "merging changes" is having the file
# not exist.
if ! [ -f merge/${RELNUM}/${F} ]; then
continue
fi
# If the file didn't exist in the old release, we're
# going to throw away the existing file and hope that
# the version from the new release is what we want.
if ! [ -f merge/${OLDRELNUM}/${F} ]; then
cp merge/${RELNUM}/${F} merge/new/${F}
continue
fi
# Some files need special treatment.
case ${F} in
/etc/spwd.db | /etc/pwd.db | /etc/login.conf.db)
# Don't merge these -- we're rebuild them
# after updates are installed.
cp merge/old/${F} merge/new/${F}
;;
*)
if ! merge -p -L "current version" \
-L "${OLDRELNUM}" -L "${RELNUM}" \
merge/old/${F} \
merge/${OLDRELNUM}/${F} \
merge/${RELNUM}/${F} \
> merge/new/${F} 2>/dev/null; then
echo ${F} >> failed.merges
fi
;;
esac
done < $1-paths
echo " done."
# Ask the user to handle any files which didn't merge.
while read F; do
# If the installed file differs from the version in
# the old release only due to $FreeBSD$ tag expansion
# then just use the version in the new release.
if samef merge/old/${F} merge/${OLDRELNUM}/${F}; then
cp merge/${RELNUM}/${F} merge/new/${F}
continue
fi
cat <<-EOF
The following file could not be merged automatically: ${F}
Press Enter to edit this file in ${EDITOR} and resolve the conflicts
manually...
EOF
read dummy </dev/tty
${EDITOR} `pwd`/merge/new/${F} < /dev/tty
done < failed.merges
rm failed.merges
# Ask the user to confirm that he likes how the result
# of merging files.
while read F; do
# Skip files which haven't changed except possibly
# in their $FreeBSD$ tags.
if [ -f merge/old/${F} ] && [ -f merge/new/${F} ] &&
samef merge/old/${F} merge/new/${F}; then
continue
fi
# Skip files where the installed file differs from
# the old file only due to $FreeBSD$ tags.
if [ -f merge/old/${F} ] &&
[ -f merge/${OLDRELNUM}/${F} ] &&
samef merge/old/${F} merge/${OLDRELNUM}/${F}; then
continue
fi
# Warn about files which are ceasing to exist.
if ! [ -f merge/new/${F} ]; then
cat <<-EOF
The following file will be removed, as it no longer exists in
FreeBSD ${RELNUM}: ${F}
EOF
continuep < /dev/tty || return 1
continue
fi
# Print changes for the user's approval.
cat <<-EOF
The following changes, which occurred between FreeBSD ${OLDRELNUM} and
FreeBSD ${RELNUM} have been merged into ${F}:
EOF
diff -U 5 -L "current version" -L "new version" \
merge/old/${F} merge/new/${F} || true
continuep < /dev/tty || return 1
done < $1-paths
# Store merged files.
while read F; do
if [ -f merge/new/${F} ]; then
V=`${SHA256} -q merge/new/${F}`
gzip -c < merge/new/${F} > files/${V}.gz
echo "${F}|${V}"
fi
done < $1-paths > newhashes
# Pull lines out from $3 which need to be updated to
# reflect merged files.
while read F; do
look "${F}|" $3
done < $1-paths > $3-oldlines
# Update lines to reflect merged files
join -t '|' -o 1.1,1.2,1.3,1.4,1.5,1.6,2.2,1.8 \
$3-oldlines newhashes > $3-newlines
# Remove old lines from $3 and add new lines.
sort $3-oldlines |
comm -13 - $3 |
sort - $3-newlines > $3.tmp
mv $3.tmp $3
# Clean up
rm $1-paths newhashes $3-oldlines $3-newlines
rm -rf merge/
fi
# We're done with merging files.
rm $1
}
# Do the work involved in fetching upgrades to a new release
upgrade_run () {
workdir_init || return 1
# Prepare the mirror list.
fetch_pick_server_init && fetch_pick_server
# Try to fetch the public key until we run out of servers.
while ! fetch_key; do
fetch_pick_server || return 1
done
# Try to fetch the metadata index signature ("tag") until we run
# out of available servers; and sanity check the downloaded tag.
while ! fetch_tag; do
fetch_pick_server || return 1
done
fetch_tagsanity || return 1
# Fetch the INDEX-OLD and INDEX-ALL.
fetch_metadata INDEX-OLD INDEX-ALL || return 1
# If StrictComponents is not "yes", generate a new components list
# with only the components which appear to be installed.
upgrade_guess_components INDEX-ALL || return 1
# Generate filtered INDEX-OLD and INDEX-ALL files containing only
# the components we want and without anything marked as "Ignore".
fetch_filter_metadata INDEX-OLD || return 1
fetch_filter_metadata INDEX-ALL || return 1
# Merge the INDEX-OLD and INDEX-ALL files into INDEX-OLD.
sort INDEX-OLD INDEX-ALL > INDEX-OLD.tmp
mv INDEX-OLD.tmp INDEX-OLD
rm INDEX-ALL
# Adjust variables for fetching files from the new release.
OLDRELNUM=${RELNUM}
RELNUM=${TARGETRELEASE}
OLDFETCHDIR=${FETCHDIR}
FETCHDIR=${RELNUM}/${ARCH}
# Try to fetch the NEW metadata index signature ("tag") until we run
# out of available servers; and sanity check the downloaded tag.
while ! fetch_tag; do
fetch_pick_server || return 1
done
# Fetch the new INDEX-ALL.
fetch_metadata INDEX-ALL || return 1
# If StrictComponents is not "yes", COMPONENTS contains an entry
# corresponding to the currently running kernel, and said kernel
# does not exist in the new release, add "kernel/generic" to the
# list of components.
upgrade_guess_new_kernel INDEX-ALL || return 1
# Filter INDEX-ALL to contain only the components we want and without
# anything marked as "Ignore".
fetch_filter_metadata INDEX-ALL || return 1
# Convert INDEX-OLD (last release) and INDEX-ALL (new release) into
# INDEX-OLD and INDEX-NEW files (in the sense of normal upgrades).
upgrade_oldall_to_oldnew INDEX-OLD INDEX-ALL INDEX-NEW
# Translate /boot/${KERNCONF} or /boot/${NKERNCONF} into ${KERNELDIR}
fetch_filter_kernel_names INDEX-NEW ${NKERNCONF}
fetch_filter_kernel_names INDEX-OLD ${KERNCONF}
# For all paths appearing in INDEX-OLD or INDEX-NEW, inspect the
# system and generate an INDEX-PRESENT file.
fetch_inspect_system INDEX-OLD INDEX-PRESENT INDEX-NEW || return 1
# Based on ${MERGECHANGES}, generate a file tomerge-old with the
# paths and hashes of old versions of files to merge.
fetch_filter_mergechanges INDEX-OLD INDEX-PRESENT tomerge-old
# Based on ${UPDATEIFUNMODIFIED}, remove lines from INDEX-* which
# correspond to lines in INDEX-PRESENT with hashes not appearing
# in INDEX-OLD or INDEX-NEW. Also remove lines where the entry in
# INDEX-PRESENT has type - and there isn't a corresponding entry in
# INDEX-OLD with type -.
fetch_filter_unmodified_notpresent \
INDEX-OLD INDEX-PRESENT INDEX-NEW tomerge-old
# For each entry in INDEX-PRESENT of type -, remove any corresponding
# entry from INDEX-NEW if ${ALLOWADD} != "yes". Remove all entries
# of type - from INDEX-PRESENT.
fetch_filter_allowadd INDEX-PRESENT INDEX-NEW
# If ${ALLOWDELETE} != "yes", then remove any entries from
# INDEX-PRESENT which don't correspond to entries in INDEX-NEW.
fetch_filter_allowdelete INDEX-PRESENT INDEX-NEW
# If ${KEEPMODIFIEDMETADATA} == "yes", then for each entry in
# INDEX-PRESENT with metadata not matching any entry in INDEX-OLD,
# replace the corresponding line of INDEX-NEW with one having the
# same metadata as the entry in INDEX-PRESENT.
fetch_filter_modified_metadata INDEX-OLD INDEX-PRESENT INDEX-NEW
# Remove lines from INDEX-PRESENT and INDEX-NEW which are identical;
# no need to update a file if it isn't changing.
fetch_filter_uptodate INDEX-PRESENT INDEX-NEW
# Fetch "clean" files from the old release for merging changes.
fetch_files_premerge tomerge-old
# Prepare to fetch files: Generate a list of the files we need,
# copy the unmodified files we have into /files/, and generate
# a list of patches to download.
fetch_files_prepare INDEX-OLD INDEX-PRESENT INDEX-NEW || return 1
# Fetch patches from to-${RELNUM}/${ARCH}/bp/
PATCHDIR=to-${RELNUM}/${ARCH}/bp
fetch_files || return 1
# Merge configuration file changes.
upgrade_merge tomerge-old INDEX-PRESENT INDEX-NEW || return 1
# Create and populate install manifest directory; and report what
# updates are available.
fetch_create_manifest || return 1
# Leave a note behind to tell the "install" command that the kernel
# needs to be installed before the world.
touch ${BDHASH}-install/kernelfirst
# Remind the user that they need to run "freebsd-update install"
# to install the downloaded bits, in case they didn't RTFM.
echo "To install the downloaded upgrades, run \"$0 install\"."
}
# Make sure that all the file hashes mentioned in $@ have corresponding
# gzipped files stored in /files/.
install_verify () {
# Generate a list of hashes
cat $@ |
cut -f 2,7 -d '|' |
grep -E '^f' |
cut -f 2 -d '|' |
sort -u > filelist
# Make sure all the hashes exist
while read HASH; do
if ! [ -f files/${HASH}.gz ]; then
echo -n "Update files missing -- "
echo "this should never happen."
echo "Re-run '$0 fetch'."
return 1
fi
done < filelist
# Clean up
rm filelist
}
# Remove the system immutable flag from files
install_unschg () {
# Generate file list
cat $@ |
cut -f 1 -d '|' > filelist
# Remove flags
while read F; do
if ! [ -e ${BASEDIR}/${F} ]; then
continue
fi
chflags noschg ${BASEDIR}/${F} || return 1
done < filelist
# Clean up
rm filelist
}
# Decide which directory name to use for kernel backups.
backup_kernel_finddir () {
CNT=0
while true ; do
# Pathname does not exist, so it is OK use that name
# for backup directory.
if [ ! -e $BACKUPKERNELDIR ]; then
return 0
fi
# If directory do exist, we only use if it has our
# marker file.
if [ -d $BACKUPKERNELDIR -a \
-e $BACKUPKERNELDIR/.freebsd-update ]; then
return 0
fi
# We could not use current directory name, so add counter to
# the end and try again.
CNT=$((CNT + 1))
if [ $CNT -gt 9 ]; then
echo "Could not find valid backup dir ($BACKUPKERNELDIR)"
exit 1
fi
BACKUPKERNELDIR="`echo $BACKUPKERNELDIR | sed -Ee 's/[0-9]\$//'`"
BACKUPKERNELDIR="${BACKUPKERNELDIR}${CNT}"
done
}
# Backup the current kernel using hardlinks, if not disabled by user.
# Since we delete all files in the directory used for previous backups
# we create a marker file called ".freebsd-update" in the directory so
# we can determine on the next run that the directory was created by
# freebsd-update and we then do not accidentally remove user files in
# the unlikely case that the user has created a directory with a
# conflicting name.
backup_kernel () {
# Only make kernel backup is so configured.
if [ $BACKUPKERNEL != yes ]; then
return 0
fi
# Decide which directory name to use for kernel backups.
backup_kernel_finddir
# Remove old kernel backup files. If $BACKUPKERNELDIR was
# "not ours", backup_kernel_finddir would have exited, so
# deleting the directory content is as safe as we can make it.
if [ -d $BACKUPKERNELDIR ]; then
rm -fr $BACKUPKERNELDIR
fi
# Create directories for backup.
mkdir -p $BACKUPKERNELDIR
mtree -cdn -p "${KERNELDIR}" | \
mtree -Ue -p "${BACKUPKERNELDIR}" > /dev/null
# Mark the directory as having been created by freebsd-update.
touch $BACKUPKERNELDIR/.freebsd-update
if [ $? -ne 0 ]; then
echo "Could not create kernel backup directory"
exit 1
fi
# Disable pathname expansion to be sure *.symbols is not
# expanded.
set -f
# Use find to ignore symbol files, unless disabled by user.
if [ $BACKUPKERNELSYMBOLFILES = yes ]; then
FINDFILTER=""
else
FINDFILTER=-"a ! -name *.symbols"
fi
# Backup all the kernel files using hardlinks.
(cd $KERNELDIR && find . -type f $FINDFILTER -exec \
cp -pl '{}' ${BACKUPKERNELDIR}/'{}' \;)
# Re-enable patchname expansion.
set +f
}
# Install new files
install_from_index () {
# First pass: Do everything apart from setting file flags. We
# can't set flags yet, because schg inhibits hard linking.
sort -k 1,1 -t '|' $1 |
tr '|' ' ' |
while read FPATH TYPE OWNER GROUP PERM FLAGS HASH LINK; do
case ${TYPE} in
d)
# Create a directory
install -d -o ${OWNER} -g ${GROUP} \
-m ${PERM} ${BASEDIR}/${FPATH}
;;
f)
if [ -z "${LINK}" ]; then
# Create a file, without setting flags.
gunzip < files/${HASH}.gz > ${HASH}
install -S -o ${OWNER} -g ${GROUP} \
-m ${PERM} ${HASH} ${BASEDIR}/${FPATH}
rm ${HASH}
else
# Create a hard link.
ln -f ${BASEDIR}/${LINK} ${BASEDIR}/${FPATH}
fi
;;
L)
# Create a symlink
ln -sfh ${HASH} ${BASEDIR}/${FPATH}
;;
esac
done
# Perform a second pass, adding file flags.
tr '|' ' ' < $1 |
while read FPATH TYPE OWNER GROUP PERM FLAGS HASH LINK; do
if [ ${TYPE} = "f" ] &&
! [ ${FLAGS} = "0" ]; then
chflags ${FLAGS} ${BASEDIR}/${FPATH}
fi
done
}
# Remove files which we want to delete
install_delete () {
# Generate list of new files
cut -f 1 -d '|' < $2 |
sort > newfiles
# Generate subindex of old files we want to nuke
sort -k 1,1 -t '|' $1 |
join -t '|' -v 1 - newfiles |
sort -r -k 1,1 -t '|' |
cut -f 1,2 -d '|' |
tr '|' ' ' > killfiles
# Remove the offending bits
while read FPATH TYPE; do
case ${TYPE} in
d)
rmdir ${BASEDIR}/${FPATH}
;;
f)
rm ${BASEDIR}/${FPATH}
;;
L)
rm ${BASEDIR}/${FPATH}
;;
esac
done < killfiles
# Clean up
rm newfiles killfiles
}
# Install new files, delete old files, and update linker.hints
install_files () {
# If we haven't already dealt with the kernel, deal with it.
if ! [ -f $1/kerneldone ]; then
grep -E '^/boot/' $1/INDEX-OLD > INDEX-OLD
grep -E '^/boot/' $1/INDEX-NEW > INDEX-NEW
# Backup current kernel before installing a new one
backup_kernel || return 1
# Install new files
install_from_index INDEX-NEW || return 1
# Remove files which need to be deleted
install_delete INDEX-OLD INDEX-NEW || return 1
# Update linker.hints if necessary
if [ -s INDEX-OLD -o -s INDEX-NEW ]; then
kldxref -R /boot/ 2>/dev/null
fi
# We've finished updating the kernel.
touch $1/kerneldone
# Do we need to ask for a reboot now?
if [ -f $1/kernelfirst ] &&
[ -s INDEX-OLD -o -s INDEX-NEW ]; then
cat <<-EOF
Kernel updates have been installed. Please reboot and run
"$0 install" again to finish installing updates.
EOF
exit 0
fi
fi
# If we haven't already dealt with the world, deal with it.
if ! [ -f $1/worlddone ]; then
# Install new shared libraries next
grep -vE '^/boot/' $1/INDEX-NEW |
grep -E '/lib/.*\.so\.[0-9]+\|' > INDEX-NEW
install_from_index INDEX-NEW || return 1
# Deal with everything else
grep -vE '^/boot/' $1/INDEX-OLD |
grep -vE '/lib/.*\.so\.[0-9]+\|' > INDEX-OLD
grep -vE '^/boot/' $1/INDEX-NEW |
grep -vE '/lib/.*\.so\.[0-9]+\|' > INDEX-NEW
install_from_index INDEX-NEW || return 1
install_delete INDEX-OLD INDEX-NEW || return 1
# Rebuild /etc/spwd.db and /etc/pwd.db if necessary.
if [ /etc/master.passwd -nt /etc/spwd.db ] ||
[ /etc/master.passwd -nt /etc/pwd.db ]; then
pwd_mkdb /etc/master.passwd
fi
# Rebuild /etc/login.conf.db if necessary.
if [ /etc/login.conf -nt /etc/login.conf.db ]; then
cap_mkdb /etc/login.conf
fi
# We've finished installing the world and deleting old files
# which are not shared libraries.
touch $1/worlddone
# Do we need to ask the user to portupgrade now?
grep -vE '^/boot/' $1/INDEX-NEW |
grep -E '/lib/.*\.so\.[0-9]+\|' |
cut -f 1 -d '|' |
sort > newfiles
if grep -vE '^/boot/' $1/INDEX-OLD |
grep -E '/lib/.*\.so\.[0-9]+\|' |
cut -f 1 -d '|' |
sort |
join -v 1 - newfiles |
grep -q .; then
cat <<-EOF
Completing this upgrade requires removing old shared object files.
Please rebuild all installed 3rd party software (e.g., programs
installed from the ports tree) and then run "$0 install"
again to finish installing updates.
EOF
rm newfiles
exit 0
fi
rm newfiles
fi
# Remove old shared libraries
grep -vE '^/boot/' $1/INDEX-NEW |
grep -E '/lib/.*\.so\.[0-9]+\|' > INDEX-NEW
grep -vE '^/boot/' $1/INDEX-OLD |
grep -E '/lib/.*\.so\.[0-9]+\|' > INDEX-OLD
install_delete INDEX-OLD INDEX-NEW || return 1
# Remove temporary files
rm INDEX-OLD INDEX-NEW
}
# Rearrange bits to allow the installed updates to be rolled back
install_setup_rollback () {
# Remove the "reboot after installing kernel", "kernel updated", and
# "finished installing the world" flags if present -- they are
# irrelevant when rolling back updates.
if [ -f ${BDHASH}-install/kernelfirst ]; then
rm ${BDHASH}-install/kernelfirst
rm ${BDHASH}-install/kerneldone
fi
if [ -f ${BDHASH}-install/worlddone ]; then
rm ${BDHASH}-install/worlddone
fi
if [ -L ${BDHASH}-rollback ]; then
mv ${BDHASH}-rollback ${BDHASH}-install/rollback
fi
mv ${BDHASH}-install ${BDHASH}-rollback
}
# Actually install updates
install_run () {
echo -n "Installing updates..."
# Make sure we have all the files we should have
install_verify ${BDHASH}-install/INDEX-OLD \
${BDHASH}-install/INDEX-NEW || return 1
# Remove system immutable flag from files
install_unschg ${BDHASH}-install/INDEX-OLD \
${BDHASH}-install/INDEX-NEW || return 1
# Install new files, delete old files, and update linker.hints
install_files ${BDHASH}-install || return 1
# Rearrange bits to allow the installed updates to be rolled back
install_setup_rollback
echo " done."
}
# Rearrange bits to allow the previous set of updates to be rolled back next.
rollback_setup_rollback () {
if [ -L ${BDHASH}-rollback/rollback ]; then
mv ${BDHASH}-rollback/rollback rollback-tmp
rm -r ${BDHASH}-rollback/
rm ${BDHASH}-rollback
mv rollback-tmp ${BDHASH}-rollback
else
rm -r ${BDHASH}-rollback/
rm ${BDHASH}-rollback
fi
}
# Install old files, delete new files, and update linker.hints
rollback_files () {
# Install old shared library files which don't have the same path as
# a new shared library file.
grep -vE '^/boot/' $1/INDEX-NEW |
grep -E '/lib/.*\.so\.[0-9]+\|' |
cut -f 1 -d '|' |
sort > INDEX-NEW.libs.flist
grep -vE '^/boot/' $1/INDEX-OLD |
grep -E '/lib/.*\.so\.[0-9]+\|' |
sort -k 1,1 -t '|' - |
join -t '|' -v 1 - INDEX-NEW.libs.flist > INDEX-OLD
install_from_index INDEX-OLD || return 1
# Deal with files which are neither kernel nor shared library
grep -vE '^/boot/' $1/INDEX-OLD |
grep -vE '/lib/.*\.so\.[0-9]+\|' > INDEX-OLD
grep -vE '^/boot/' $1/INDEX-NEW |
grep -vE '/lib/.*\.so\.[0-9]+\|' > INDEX-NEW
install_from_index INDEX-OLD || return 1
install_delete INDEX-NEW INDEX-OLD || return 1
# Install any old shared library files which we didn't install above.
grep -vE '^/boot/' $1/INDEX-OLD |
grep -E '/lib/.*\.so\.[0-9]+\|' |
sort -k 1,1 -t '|' - |
join -t '|' - INDEX-NEW.libs.flist > INDEX-OLD
install_from_index INDEX-OLD || return 1
# Delete unneeded shared library files
grep -vE '^/boot/' $1/INDEX-OLD |
grep -E '/lib/.*\.so\.[0-9]+\|' > INDEX-OLD
grep -vE '^/boot/' $1/INDEX-NEW |
grep -E '/lib/.*\.so\.[0-9]+\|' > INDEX-NEW
install_delete INDEX-NEW INDEX-OLD || return 1
# Deal with kernel files
grep -E '^/boot/' $1/INDEX-OLD > INDEX-OLD
grep -E '^/boot/' $1/INDEX-NEW > INDEX-NEW
install_from_index INDEX-OLD || return 1
install_delete INDEX-NEW INDEX-OLD || return 1
if [ -s INDEX-OLD -o -s INDEX-NEW ]; then
kldxref -R /boot/ 2>/dev/null
fi
# Remove temporary files
rm INDEX-OLD INDEX-NEW INDEX-NEW.libs.flist
}
# Actually rollback updates
rollback_run () {
echo -n "Uninstalling updates..."
# If there are updates waiting to be installed, remove them; we
# want the user to re-run 'fetch' after rolling back updates.
if [ -L ${BDHASH}-install ]; then
rm -r ${BDHASH}-install/
rm ${BDHASH}-install
fi
# Make sure we have all the files we should have
install_verify ${BDHASH}-rollback/INDEX-NEW \
${BDHASH}-rollback/INDEX-OLD || return 1
# Remove system immutable flag from files
install_unschg ${BDHASH}-rollback/INDEX-NEW \
${BDHASH}-rollback/INDEX-OLD || return 1
# Install old files, delete new files, and update linker.hints
rollback_files ${BDHASH}-rollback || return 1
# Remove the rollback directory and the symlink pointing to it; and
# rearrange bits to allow the previous set of updates to be rolled
# back next.
rollback_setup_rollback
echo " done."
}
# Compare INDEX-ALL and INDEX-PRESENT and print warnings about differences.
IDS_compare () {
# Get all the lines which mismatch in something other than file
# flags. We ignore file flags because sysinstall doesn't seem to
# set them when it installs FreeBSD; warning about these adds a
# very large amount of noise.
cut -f 1-5,7-8 -d '|' $1 > $1.noflags
sort -k 1,1 -t '|' $1.noflags > $1.sorted
cut -f 1-5,7-8 -d '|' $2 |
comm -13 $1.noflags - |
fgrep -v '|-|||||' |
sort -k 1,1 -t '|' |
join -t '|' $1.sorted - > INDEX-NOTMATCHING
# Ignore files which match IDSIGNOREPATHS.
for X in ${IDSIGNOREPATHS}; do
grep -E "^${X}" INDEX-NOTMATCHING
done |
sort -u |
comm -13 - INDEX-NOTMATCHING > INDEX-NOTMATCHING.tmp
mv INDEX-NOTMATCHING.tmp INDEX-NOTMATCHING
# Go through the lines and print warnings.
while read LINE; do
FPATH=`echo "${LINE}" | cut -f 1 -d '|'`
TYPE=`echo "${LINE}" | cut -f 2 -d '|'`
OWNER=`echo "${LINE}" | cut -f 3 -d '|'`
GROUP=`echo "${LINE}" | cut -f 4 -d '|'`
PERM=`echo "${LINE}" | cut -f 5 -d '|'`
HASH=`echo "${LINE}" | cut -f 6 -d '|'`
LINK=`echo "${LINE}" | cut -f 7 -d '|'`
P_TYPE=`echo "${LINE}" | cut -f 8 -d '|'`
P_OWNER=`echo "${LINE}" | cut -f 9 -d '|'`
P_GROUP=`echo "${LINE}" | cut -f 10 -d '|'`
P_PERM=`echo "${LINE}" | cut -f 11 -d '|'`
P_HASH=`echo "${LINE}" | cut -f 12 -d '|'`
P_LINK=`echo "${LINE}" | cut -f 13 -d '|'`
# Warn about different object types.
if ! [ "${TYPE}" = "${P_TYPE}" ]; then
echo -n "${FPATH} is a "
case "${P_TYPE}" in
f) echo -n "regular file, "
;;
d) echo -n "directory, "
;;
L) echo -n "symlink, "
;;
esac
echo -n "but should be a "
case "${TYPE}" in
f) echo -n "regular file."
;;
d) echo -n "directory."
;;
L) echo -n "symlink."
;;
esac
echo
# Skip other tests, since they don't make sense if
# we're comparing different object types.
continue
fi
# Warn about different owners.
if ! [ "${OWNER}" = "${P_OWNER}" ]; then
echo -n "${FPATH} is owned by user id ${P_OWNER}, "
echo "but should be owned by user id ${OWNER}."
fi
# Warn about different groups.
if ! [ "${GROUP}" = "${P_GROUP}" ]; then
echo -n "${FPATH} is owned by group id ${P_GROUP}, "
echo "but should be owned by group id ${GROUP}."
fi
# Warn about different permissions. We do not warn about
# different permissions on symlinks, since some archivers
# don't extract symlink permissions correctly and they are
# ignored anyway.
if ! [ "${PERM}" = "${P_PERM}" ] &&
! [ "${TYPE}" = "L" ]; then
echo -n "${FPATH} has ${P_PERM} permissions, "
echo "but should have ${PERM} permissions."
fi
# Warn about different file hashes / symlink destinations.
if ! [ "${HASH}" = "${P_HASH}" ]; then
if [ "${TYPE}" = "L" ]; then
echo -n "${FPATH} is a symlink to ${P_HASH}, "
echo "but should be a symlink to ${HASH}."
fi
if [ "${TYPE}" = "f" ]; then
echo -n "${FPATH} has SHA256 hash ${P_HASH}, "
echo "but should have SHA256 hash ${HASH}."
fi
fi
# We don't warn about different hard links, since some
# some archivers break hard links, and as long as the
# underlying data is correct they really don't matter.
done < INDEX-NOTMATCHING
# Clean up
rm $1 $1.noflags $1.sorted $2 INDEX-NOTMATCHING
}
# Do the work involved in comparing the system to a "known good" index
IDS_run () {
workdir_init || return 1
# Prepare the mirror list.
fetch_pick_server_init && fetch_pick_server
# Try to fetch the public key until we run out of servers.
while ! fetch_key; do
fetch_pick_server || return 1
done
# Try to fetch the metadata index signature ("tag") until we run
# out of available servers; and sanity check the downloaded tag.
while ! fetch_tag; do
fetch_pick_server || return 1
done
fetch_tagsanity || return 1
# Fetch INDEX-OLD and INDEX-ALL.
fetch_metadata INDEX-OLD INDEX-ALL || return 1
# Generate filtered INDEX-OLD and INDEX-ALL files containing only
# the components we want and without anything marked as "Ignore".
fetch_filter_metadata INDEX-OLD || return 1
fetch_filter_metadata INDEX-ALL || return 1
# Merge the INDEX-OLD and INDEX-ALL files into INDEX-ALL.
sort INDEX-OLD INDEX-ALL > INDEX-ALL.tmp
mv INDEX-ALL.tmp INDEX-ALL
rm INDEX-OLD
# Translate /boot/${KERNCONF} to ${KERNELDIR}
fetch_filter_kernel_names INDEX-ALL ${KERNCONF}
# Inspect the system and generate an INDEX-PRESENT file.
fetch_inspect_system INDEX-ALL INDEX-PRESENT /dev/null || return 1
# Compare INDEX-ALL and INDEX-PRESENT and print warnings about any
# differences.
IDS_compare INDEX-ALL INDEX-PRESENT
}
#### Main functions -- call parameter-handling and core functions
# Using the command line, configuration file, and defaults,
# set all the parameters which are needed later.
get_params () {
init_params
parse_cmdline $@
parse_conffile
default_params
}
# Fetch command. Make sure that we're being called
# interactively, then run fetch_check_params and fetch_run
cmd_fetch () {
if [ ! -t 0 ]; then
echo -n "`basename $0` fetch should not "
echo "be run non-interactively."
echo "Run `basename $0` cron instead."
exit 1
fi
fetch_check_params
fetch_run || exit 1
}
# Cron command. Make sure the parameters are sensible; wait
# rand(3600) seconds; then fetch updates. While fetching updates,
# send output to a temporary file; only print that file if the
# fetching failed.
cmd_cron () {
fetch_check_params
sleep `jot -r 1 0 3600`
TMPFILE=`mktemp /tmp/freebsd-update.XXXXXX` || exit 1
if ! fetch_run >> ${TMPFILE} ||
! grep -q "No updates needed" ${TMPFILE} ||
[ ${VERBOSELEVEL} = "debug" ]; then
mail -s "`hostname` security updates" ${MAILTO} < ${TMPFILE}
fi
rm ${TMPFILE}
}
# Fetch files for upgrading to a new release.
cmd_upgrade () {
upgrade_check_params
upgrade_run || exit 1
}
# Install downloaded updates.
cmd_install () {
install_check_params
install_run || exit 1
}
# Rollback most recently installed updates.
cmd_rollback () {
rollback_check_params
rollback_run || exit 1
}
# Compare system against a "known good" index.
cmd_IDS () {
IDS_check_params
IDS_run || exit 1
}
#### Entry point
# Make sure we find utilities from the base system
export PATH=/sbin:/bin:/usr/sbin:/usr/bin:${PATH}
# Set a pager if the user doesn't
if [ -z "$PAGER" ]; then
PAGER=/usr/bin/more
fi
# Set LC_ALL in order to avoid problems with character ranges like [A-Z].
export LC_ALL=C
get_params $@
for COMMAND in ${COMMANDS}; do
cmd_${COMMAND}
done
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