93 lines
2.3 KiB
Bash
Executable File
93 lines
2.3 KiB
Bash
Executable File
#!/usr/bin/env bash
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if [[ ${1,,} == "-h" ]] || [[ ${1,,} == "-help" ]] || \
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[[ ${1,,} == "--help" ]]; then
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echo "Usage: $0 [dir_name]"
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echo "Convert the system default trust store into an OpenSSL -CApath"
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echo "compatible dir"
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echo
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echo "dir_name - name of the directory in which the certificates will be"
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echo " placed, \`ca_trusted' by default"
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exit 0
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fi
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DIR="${1:-ca_trusted}"
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# sanity check the target directory
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if [[ -e $DIR ]] && [[ ! -d $DIR ]]; then
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echo "$DIR must either not exist or be a directory!" >&2
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exit 1
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fi
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# prepare directory
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if [[ ! -e $DIR ]]; then
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mkdir "$DIR"
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if [ $? -ne 0 ]; then
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echo "mkdir failed, check your privileges" >&2
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return 1
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fi
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fi
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pushd "$DIR" >/dev/null
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# search for trust anchors
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for f in "${CACERTS}" \
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/etc/pki/tls/certs/ca-bundle.crt \
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/etc/ssl/certs/ca-certificates.crt \
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"$(dirname $0)/../ca-bundle.crt" \
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"$(dirname $0)/../../ca-bundle.crt"; do
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if [ -e "$f" ]; then
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CACERTS="$f"
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break
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fi
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done
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if [ ! -e "$CACERTS" ]; then
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echo "No CA trust root store found" >&2
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return 1
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fi
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# search for openssl
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for f in "$(dirname $0)/../openssl" \
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"$(dirname $0)/../../openssl" \
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"$(which openssl 2>/dev/null)"; do
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if [ -x "$f" ]; then
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OPENSSL="$f"
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break
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fi
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done
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if [ ! -x "$OPENSSL" ]; then
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echo "openssl not found!" >&2
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return 1
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fi
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# split the file with all CA certs into single certs
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awk '
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split_after == 1 {n++;split_after=0}
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/-----END CERTIFICATE-----/ {split_after=1}
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{print > ".tmp.cert" n ".pem"}' < "$CACERTS"
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# rename the files to their sha256 hashes
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for file in .tmp.cert*.pem; do
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f_hash=($(${OPENSSL} x509 -in "${file}" -outform der 2>/dev/null | \
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${OPENSSL} dgst -r -sha256 2>/dev/null))
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f_name="${f_hash[0]}.pem"
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mv ${file} ${f_name}
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done
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# create links that make the directory into -CApath compatible dir
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for file in *.pem; do
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h=$(${OPENSSL} x509 -in "$file" -noout -hash 2>/dev/null)
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for ((num=0; num<=100; num++)); do
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if [[ ${h}.${num} -ef ${file} ]]; then
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# file already linked, skip
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break
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fi
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if [[ ! -e ${h}.${num} ]]; then
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ln -s "${file}" "${h}.${num}"
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break
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fi
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done
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done
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popd >/dev/null
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