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adds feature to detect multiple certificates in PEM bundles #182

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adds feature to detect multiple certificates in PEM bundles #182

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58 changes: 42 additions & 16 deletions sslcertificates/agents/plugins/sslcertificates
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Original file line number Diff line number Diff line change
Expand Up @@ -23,7 +23,7 @@ if [ ! -x "$OPENSSL" ]; then
fi

CERT_DIRS="/etc/ssl/certs"

CERT_SEPARATOR="-----BEGIN CERTIFICATE-----"
CONFIG_FILE="$MK_CONFDIR/sslcertificates"

if [ -r "$CONFIG_FILE" ]; then
Expand All @@ -32,28 +32,54 @@ if [ -r "$CONFIG_FILE" ]; then

fi

get_cert() {
local certfile="$1"
local -i index=$2
if [ $index -eq 0 ]; then
cat $certfile
else
cert_count=0
while read LINE; do
if [[ "${LINE:0:${#CERT_SEPARATOR}}" = "$CERT_SEPARATOR" ]]; then
cert_count=$((cert_count+1))
fi
if [ $((index+1)) -eq $cert_count ]; then
echo "$LINE"
fi
done < $certfile
fi
}

get_cert_info() {
certfile="$1"
single="$2"
if [ -f "$certfile" -a -r "$certfile" -a \( ! -L "$certfile" -o "$single" \) ] && ! [[ $certfile =~ .*~$ ]] && ! [[ $certfile =~ .*_CA.crt$ ]] && ! [[ $certfile =~ .*/ca-certificates.crt$ ]]; then
inform='DER'
if grep -q -- '-----BEGIN CERTIFICATE-----' "$certfile"; then
inform='PEM'
inform='PEM'
cert_count=$(grep -c -- "$CERT_SEPARATOR" "$certfile")
if [ $cert_count -eq 0 ]; then
inform='DER'
cert_count=1
fi

cert_subject=$($OPENSSL x509 -inform $inform -noout -subject -nameopt utf8 -in "$certfile" 2> /dev/null) || return
cert_subject=$(cut -d "=" -f 2- <<<"$cert_subject" | sed -e 's/"/\\"/g')
if ! grep -q '@snakeoil.dom' <<<"$cert_subject"; then
cert_startdate=$($OPENSSL x509 -inform $inform -noout -startdate -in "$certfile" | cut -d "=" -f 2 )
cert_startdate_epoch=$(date --date "$cert_startdate" '+%s')
cert_enddate=$($OPENSSL x509 -inform $inform -noout -enddate -in "$certfile" | cut -d "=" -f 2 )
cert_enddate_epoch=$(date --date "$cert_enddate" '+%s')
cert_algosign=$($OPENSSL x509 -inform $inform -noout -text -in "$certfile" | awk '/Signature Algorithm: / { print $3; exit;}' )
cert_issuer_hash=$($OPENSSL x509 -inform $inform -noout -issuer_hash -in "$certfile" )
cert_issuer=$($OPENSSL x509 -inform $inform -noout -issuer -in "$certfile" | sed -e 's/ = /=/g' -e 's/, /,/g' -e 's/issuer=//' -e 's/"//g')
for ((cert_index=0; cert_index<cert_count; cert_index++)); do
cert_subject=$($OPENSSL x509 -inform $inform -noout -subject -nameopt utf8 -in <(get_cert $certfile $cert_index) 2> /dev/null) || return
cert_subject=$(cut -d "=" -f 2- <<<"$cert_subject" | sed -e 's/"/\\"/g')
if ! grep -q '@snakeoil.dom' <<<"$cert_subject"; then
cert_startdate=$($OPENSSL x509 -inform $inform -noout -startdate -in <(get_cert $certfile $cert_index) | cut -d "=" -f 2 )
cert_startdate_epoch=$(date --date "$cert_startdate" '+%s')
cert_enddate=$($OPENSSL x509 -inform $inform -noout -enddate -in <(get_cert $certfile $cert_index) | cut -d "=" -f 2 )
cert_enddate_epoch=$(date --date "$cert_enddate" '+%s')
cert_algosign=$($OPENSSL x509 -inform $inform -noout -text -in <(get_cert $certfile $cert_index) | awk '/Signature Algorithm: / { print $3; exit;}' )
cert_issuer_hash=$($OPENSSL x509 -inform $inform -noout -issuer_hash -in <(get_cert $certfile $cert_index) )
cert_issuer=$($OPENSSL x509 -inform $inform -noout -issuer -in <(get_cert $certfile $cert_index) | sed -e 's/ = /=/g' -e 's/, /,/g' -e 's/issuer=//' -e 's/"//g')
cert_suffix=""
if [ $cert_index -gt 0 ]; then
cert_suffix="#$cert_index"
fi

echo "{\"file\": \"$certfile\", \"starts\": $cert_startdate_epoch, \"expires\": $cert_enddate_epoch, \"algosign\": \"$cert_algosign\", \"issuer_hash\": \"$cert_issuer_hash\", \"issuer\": \"$cert_issuer\", \"subj\": \"$cert_subject\"}"
fi
echo "{\"file\": \"$certfile$cert_suffix\", \"starts\": $cert_startdate_epoch, \"expires\": $cert_enddate_epoch, \"algosign\": \"$cert_algosign\", \"issuer_hash\": \"$cert_issuer_hash\", \"issuer\": \"$cert_issuer\", \"subj\": \"$cert_subject\"}"
fi
done
fi
}

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