mirror of
https://github.com/freebsd/freebsd-src
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3fed4f0db5
Unfortunately tar will not be able to extract base.txz to a system where /etc and /usr are not on the same filesystem if the certificates are hard links. PR: 277828 Reviewed by: mp Differential Revision: https://reviews.freebsd.org/D44496
367 lines
8.8 KiB
Bash
Executable file
367 lines
8.8 KiB
Bash
Executable file
#!/bin/sh
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#-
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# SPDX-License-Identifier: BSD-2-Clause
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#
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# Copyright 2018 Allan Jude <allanjude@freebsd.org>
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#
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# Redistribution and use in source and binary forms, with or without
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# modification, are permitted providing that the following conditions
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# are met:
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# 1. Redistributions of source code must retain the above copyright
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# notice, this list of conditions and the following disclaimer.
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# 2. Redistributions in binary form must reproduce the above copyright
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# notice, this list of conditions and the following disclaimer in the
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# documentation and/or other materials provided with the distribution.
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#
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# THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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# IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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# WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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# ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
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# DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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# STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
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# IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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# POSSIBILITY OF SUCH DAMAGE.
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#
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set -u
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############################################################ CONFIGURATION
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: ${DESTDIR:=}
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: ${DISTBASE:=}
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############################################################ GLOBALS
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SCRIPTNAME="${0##*/}"
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ERRORS=0
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NOOP=false
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UNPRIV=false
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VERBOSE=false
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############################################################ FUNCTIONS
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info()
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{
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echo "${0##*/}: $@" >&2
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}
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verbose()
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{
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if "${VERBOSE}" ; then
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info "$@"
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fi
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}
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perform()
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{
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if ! "${NOOP}" ; then
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"$@"
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fi
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}
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cert_files_in()
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{
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find -L "$@" -type f \( \
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-name '*.pem' -or \
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-name '*.crt' -or \
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-name '*.cer' \
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\) 2>/dev/null
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}
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eolcvt()
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{
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cat "$@" | tr -s '\r' '\n'
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}
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do_hash()
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{
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local hash
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if hash=$(openssl x509 -noout -subject_hash -in "$1") ; then
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echo "$hash"
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return 0
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else
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info "Error: $1"
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ERRORS=$((ERRORS + 1))
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return 1
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fi
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}
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get_decimal()
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{
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local checkdir hash decimal
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checkdir=$1
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hash=$2
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decimal=0
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while [ -e "$checkdir/$hash.$decimal" ] ; do
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decimal=$((decimal + 1))
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done
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echo ${decimal}
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return 0
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}
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create_trusted()
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{
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local hash certhash otherfile otherhash
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local suffix
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local link=${2:+-lrs}
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hash=$(do_hash "$1") || return
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certhash=$(openssl x509 -sha1 -in "$1" -noout -fingerprint)
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for otherfile in $(find $UNTRUSTDESTDIR -name "$hash.*") ; do
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otherhash=$(openssl x509 -sha1 -in "$otherfile" -noout -fingerprint)
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if [ "$certhash" = "$otherhash" ] ; then
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info "Skipping untrusted certificate $hash ($otherfile)"
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return 0
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fi
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done
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for otherfile in $(find $CERTDESTDIR -name "$hash.*") ; do
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otherhash=$(openssl x509 -sha1 -in "$otherfile" -noout -fingerprint)
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if [ "$certhash" = "$otherhash" ] ; then
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verbose "Skipping duplicate entry for certificate $hash"
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return 0
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fi
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done
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suffix=$(get_decimal "$CERTDESTDIR" "$hash")
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verbose "Adding $hash.$suffix to trust store"
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perform install ${INSTALLFLAGS} -m 0444 ${link} \
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"$(realpath "$1")" "$CERTDESTDIR/$hash.$suffix"
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}
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# Accepts either dot-hash form from `certctl list` or a path to a valid cert.
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resolve_certname()
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{
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local hash srcfile filename
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local suffix
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# If it exists as a file, we'll try that; otherwise, we'll scan
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if [ -e "$1" ] ; then
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hash=$(do_hash "$1") || return
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srcfile=$(realpath "$1")
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suffix=$(get_decimal "$UNTRUSTDESTDIR" "$hash")
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filename="$hash.$suffix"
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echo "$srcfile" "$hash.$suffix"
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elif [ -e "${CERTDESTDIR}/$1" ] ; then
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srcfile=$(realpath "${CERTDESTDIR}/$1")
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hash=$(echo "$1" | sed -Ee 's/\.([0-9])+$//')
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suffix=$(get_decimal "$UNTRUSTDESTDIR" "$hash")
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filename="$hash.$suffix"
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echo "$srcfile" "$hash.$suffix"
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fi
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}
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create_untrusted()
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{
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local srcfile filename
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local link=${2:+-lrs}
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set -- $(resolve_certname "$1")
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srcfile=$1
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filename=$2
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if [ -z "$srcfile" -o -z "$filename" ] ; then
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return
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fi
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verbose "Adding $filename to untrusted list"
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perform install ${INSTALLFLAGS} -m 0444 ${link} \
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"$srcfile" "$UNTRUSTDESTDIR/$filename"
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}
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do_scan()
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{
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local CFUNC CSEARCH CPATH CFILE CERT SPLITDIR
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local oldIFS="$IFS"
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CFUNC="$1"
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CSEARCH="$2"
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IFS=:
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set -- $CSEARCH
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IFS="$oldIFS"
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for CFILE in $(cert_files_in "$@") ; do
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verbose "Reading $CFILE"
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case $(eolcvt "$CFILE" | egrep -c '^-+BEGIN CERTIFICATE-+$') in
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0)
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;;
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1)
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"$CFUNC" "$CFILE" link
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;;
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*)
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verbose "Multiple certificates found, splitting..."
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SPLITDIR=$(mktemp -d)
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eolcvt "$CFILE" | egrep '^(---|[0-9A-Za-z/+=]+$)' | \
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split -p '^-+BEGIN CERTIFICATE-+$' - "$SPLITDIR/x"
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for CERT in $(find "$SPLITDIR" -type f) ; do
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"$CFUNC" "$CERT"
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done
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rm -rf "$SPLITDIR"
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;;
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esac
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done
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}
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do_list()
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{
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local CFILE subject
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for CFILE in $(find "$@" \( -type f -or -type l \) -name '*.[0-9]') ; do
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if [ ! -s "$CFILE" ] ; then
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info "Unable to read $CFILE"
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ERRORS=$((ERRORS + 1))
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continue
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fi
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subject=
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if ! "$VERBOSE" ; then
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subject=$(openssl x509 -noout -subject -nameopt multiline -in "$CFILE" | sed -n '/commonName/s/.*= //p')
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fi
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if [ -z "$subject" ] ; then
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subject=$(openssl x509 -noout -subject -in "$CFILE")
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fi
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printf "%s\t%s\n" "${CFILE##*/}" "$subject"
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done
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}
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cmd_rehash()
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{
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if [ -e "$CERTDESTDIR" ] ; then
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perform find "$CERTDESTDIR" \( -type f -or -type l \) -delete
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else
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perform install -d -m 0755 "$CERTDESTDIR"
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fi
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if [ -e "$UNTRUSTDESTDIR" ] ; then
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perform find "$UNTRUSTDESTDIR" \( -type f -or -type l \) -delete
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else
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perform install -d -m 0755 "$UNTRUSTDESTDIR"
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fi
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do_scan create_untrusted "$UNTRUSTPATH"
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do_scan create_trusted "$TRUSTPATH"
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}
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cmd_list()
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{
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info "Listing Trusted Certificates:"
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do_list "$CERTDESTDIR"
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}
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cmd_untrust()
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{
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local UTFILE
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shift # verb
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perform install -d -m 0755 "$UNTRUSTDESTDIR"
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for UTFILE in "$@"; do
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info "Adding $UTFILE to untrusted list"
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create_untrusted "$UTFILE"
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done
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}
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cmd_trust()
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{
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local UTFILE untrustedhash certhash hash
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shift # verb
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for UTFILE in "$@"; do
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if [ -s "$UTFILE" ] ; then
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hash=$(do_hash "$UTFILE")
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certhash=$(openssl x509 -sha1 -in "$UTFILE" -noout -fingerprint)
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for UNTRUSTEDFILE in $(find $UNTRUSTDESTDIR -name "$hash.*") ; do
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untrustedhash=$(openssl x509 -sha1 -in "$UNTRUSTEDFILE" -noout -fingerprint)
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if [ "$certhash" = "$untrustedhash" ] ; then
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info "Removing $(basename "$UNTRUSTEDFILE") from untrusted list"
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perform rm -f $UNTRUSTEDFILE
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fi
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done
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elif [ -e "$UNTRUSTDESTDIR/$UTFILE" ] ; then
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info "Removing $UTFILE from untrusted list"
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perform rm -f "$UNTRUSTDESTDIR/$UTFILE"
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else
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info "Cannot find $UTFILE"
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ERRORS=$((ERRORS + 1))
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fi
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done
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}
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cmd_untrusted()
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{
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info "Listing Untrusted Certificates:"
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do_list "$UNTRUSTDESTDIR"
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}
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usage()
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{
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exec >&2
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echo "Manage the TLS trusted certificates on the system"
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echo " $SCRIPTNAME [-v] list"
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echo " List trusted certificates"
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echo " $SCRIPTNAME [-v] untrusted"
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echo " List untrusted certificates"
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echo " $SCRIPTNAME [-nUv] [-D <destdir>] [-d <distbase>] [-M <metalog>] rehash"
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echo " Generate hash links for all certificates"
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echo " $SCRIPTNAME [-nv] untrust <file>"
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echo " Add <file> to the list of untrusted certificates"
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echo " $SCRIPTNAME [-nv] trust <file>"
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echo " Remove <file> from the list of untrusted certificates"
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exit 64
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}
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############################################################ MAIN
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while getopts D:d:M:nUv flag; do
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case "$flag" in
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D) DESTDIR=${OPTARG} ;;
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d) DISTBASE=${OPTARG} ;;
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M) METALOG=${OPTARG} ;;
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n) NOOP=true ;;
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U) UNPRIV=true ;;
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v) VERBOSE=true ;;
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esac
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done
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shift $((OPTIND - 1))
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DESTDIR=${DESTDIR%/}
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if ! [ -z "${CERTCTL_VERBOSE:-}" ] ; then
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VERBOSE=true
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fi
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: ${METALOG:=${DESTDIR}/METALOG}
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INSTALLFLAGS=
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if "$UNPRIV" ; then
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INSTALLFLAGS="-U -M ${METALOG} -D ${DESTDIR}"
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fi
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: ${LOCALBASE:=$(sysctl -n user.localbase)}
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: ${TRUSTPATH:=${DESTDIR}${DISTBASE}/usr/share/certs/trusted:${DESTDIR}${LOCALBASE}/share/certs:${DESTDIR}${LOCALBASE}/etc/ssl/certs}
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: ${UNTRUSTPATH:=${DESTDIR}${DISTBASE}/usr/share/certs/untrusted:${DESTDIR}${LOCALBASE}/etc/ssl/untrusted:${DESTDIR}${LOCALBASE}/etc/ssl/blacklisted}
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: ${CERTDESTDIR:=${DESTDIR}${DISTBASE}/etc/ssl/certs}
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: ${UNTRUSTDESTDIR:=${DESTDIR}${DISTBASE}/etc/ssl/untrusted}
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[ $# -gt 0 ] || usage
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case "$1" in
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list) cmd_list ;;
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rehash) cmd_rehash ;;
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blacklist) cmd_untrust "$@" ;;
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untrust) cmd_untrust "$@" ;;
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trust) cmd_trust "$@" ;;
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unblacklist) cmd_trust "$@" ;;
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untrusted) cmd_untrusted ;;
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blacklisted) cmd_untrusted ;;
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*) usage # NOTREACHED
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esac
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retval=$?
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if [ $ERRORS -gt 0 ] ; then
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info "Encountered $ERRORS errors"
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fi
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exit $retval
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################################################################################
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# END
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################################################################################
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