# bash completion for openssl

have openssl && {
_openssl_sections()
{
    local config f

    # check if a specific configuration file is used
    for (( i=2; i < COMP_CWORD; i++ )); do
        if [[ "${COMP_WORDS[i]}" == -config ]]; then
            config=${COMP_WORDS[i+1]}
            break
        fi
    done

    # if no config given, check some usual default locations
    if [ -z "$config" ]; then
        for f in /etc/ssl/openssl.cnf /etc/pki/tls/openssl.cnf \
            /usr/share/ssl/openssl.cnf; do
            [ -f $f ] && config=$f && break
        done
    fi

    [ ! -f "$config" ] && return 0

    COMPREPLY=( $( compgen -W "$( awk '/\[.*\]/ {print $2}' $config )" \
        -- "$cur" ) )
}

_openssl()
{
    local cur prev commands command options formats

    COMPREPLY=()
    _get_comp_words_by_ref cur prev

    commands='asn1parse ca ciphers crl crl2pkcs7 dgst dh dhparam dsa \
        dsaparam ec ecparam enc engine errstr gendh gendsa genrsa \
        nseq ocsp passwd pkcs12 pkcs7 pkcs8 prime rand req rsa \
        rsautl s_client s_server s_time sess_id smime speed spkac \
        verify version x509 md2 md4 md5 rmd160 sha sha1 aes-128-cbc \
        aes-128-ecb aes-192-cbc aes-192-ecb aes-256-cbc aes-256-ecb \
        base64 bf bf-cbc bf-cfb bf-ecb bf-ofb camellia-128-cbc \
        camellia-128-ecb camellia-192-cbc camellia-192-ecb \
        camellia-256-cbc camellia-256-ecb cast cast-cbc cast5-cbc \
        cast5-cfb cast5-ecb cast5-ofb des des-cbc des-cfb des-ecb \
        des-ede des-ede-cbc des-ede-cfb des-ede-ofb des-ede3 \
        des-ede3-cbc des-ede3-cfb des-ede3-ofb des-ofb des3 desx rc2 \
        rc2-40-cbc rc2-64-cbc rc2-cbc rc2-cfb rc2-ecb rc2-ofb rc4 \
        rc4-40'

    if [ $COMP_CWORD -eq 1 ]; then
        COMPREPLY=( $( compgen -W "$commands" -- "$cur" ) )
    else
        command=${COMP_WORDS[1]}
        case $prev in
            -CA|-CAfile|-CAkey|-CAserial|-cert|-certfile|-config|-content| \
            -dcert|-dkey|-dhparam|-extfile|-in|-inkey|-kfile|-key|-keyout| \
            -out|-oid|-prvrify|-rand|-recip|-revoke|-sess_in|-sess_out| \
            -spkac|-sign|-signkey|-signer|-signature|-ss_cert|-untrusted| \
            -verify)
                _filedir
                return 0
                ;;
            -outdir|-CApath)
                _filedir -d
                return 0
                ;;
            -name|-crlexts|-extensions)
                _openssl_sections
                return 0
                ;;
            -inform|-outform|-keyform|-certform|-CAform|-CAkeyform|-dkeyform|-dcertform)
                formats='DER PEM'
                case $command in
                    x509)
                        formats="$formats NET"
                        ;;
                    smime)
                        formats="$formats SMIME"
                        ;;
                esac
                COMPREPLY=( $( compgen -W "$formats" -- "$cur" ) )
                return 0
                ;;
            -connect)
                _known_hosts_real "$cur"
                return 0
                ;;
            -starttls)
                COMPREPLY=( $( compgen -W 'smtp pop3 imap ftp' \
                    -- "$cur" ) )
                return 0
                ;;
            -cipher)
                COMPREPLY=( $( compgen -W "$(openssl ciphers | \
                    tr ':' '\n')" -- "$cur" ) )
                return 0
                ;;
        esac

        if [[ "$cur" == -* ]]; then
            # possible options for the command
            case $command in
                asn1parse)
                    options='-inform -in -out -noout -offset -length -i -oid \
                        -strparse'
                    ;;
                ca)
                    options='-verbose -config -name -gencrl -revoke \
                        -crl_reason -crl_hold -crl_compromise \
                        -crl_CA_compromise -crldays -crlhours -crlexts \
                        -startdate -enddate -days -md -policy -keyfile -key \
                        -passin -cert -selfsig -in -out -notext -outdir \
                        -infiles -spkac -ss_cert -preserveDN -noemailDN \
                        -batch -msie_hack -extensions -extfile -engine \
                        -subj -utf8 -multivalue-rdn'
                        ;;
                ciphers)
                    options='-v -ssl2 -ssl3 -tls1'
                    ;;
                crl)
                    options='-inform -outform -text -in -out -noout -hash \
                        -issuer -lastupdate -nextupdate -CAfile -CApath'
                    ;;
                crl2pkcs7)
                    options='-inform -outform -in -out -print_certs'
                    ;;
                dgst)
                    options='-md5 -md4 -md2 -sha1 -sha -mdc2 -ripemd160 -dss1 \
                        -c -d -hex -binary -out -sign -verify -prverify \
                        -signature'
                    ;;
                dsa)
                    options='-inform -outform -in -passin -out -passout -des \
                        -des3 -idea -text -noout -modulus -pubin -pubout'
                    ;;
                dsaparam)
                    options='-inform -outform -in -out -noout -text -C -rand \
                        -genkey'
                    ;;
                enc)
                    options='-ciphername -in -out -pass -e -d -a -A -k -kfile \
                        -S -K -iv -p -P -bufsize -debug'
                    ;;
                dhparam)
                    options='-inform -outform -in -out -dsaparam -noout -text \
                        -C -2 -5 -rand'
                    ;;
                gendsa)
                    options='-out -des -des3 -idea -rand'
                    ;;
                genrsa)
                    options='-out -passout -des -des3 -idea -f4 -3 -rand'
                    ;;
                pkcs7)
                    options='-inform -outform -in -out -print_certs -text \
                        -noout'
                    ;;
                rand)
                    options='-out -rand -base64'
                    ;;
                req)
                    options='-inform -outform -in -passin -out -passout -text \
                        -noout -verify -modulus -new -rand -newkey -newkey \
                        -nodes -key -keyform -keyout -md5 -sha1 -md2 -mdc2 \
                        -config -x509 -days -asn1-kludge -newhdr -extensions \
                        -reqexts section'
                    ;;
                rsa)
                    options='-inform -outform -in -passin -out -passout \
                        -sgckey -des -des3 -idea -text -noout -modulus -check \
                        -pubin -pubout -engine'
                    ;;
                rsautl)
                    options='-in -out -inkey -pubin -certin -sign -verify \
                        -encrypt -decrypt -pkcs -ssl -raw -hexdump -asn1parse'
                    ;;
                s_client)
                    options='-connect -verify -cert -certform -key -keyform \
                        -pass -CApath -CAfile -reconnect -pause -showcerts \
                        -debug -msg -nbio_test -state -nbio -crlf -ign_eof \
                        -quiet -ssl2 -ssl3 -tls1 -no_ssl2 -no_ssl3 -no_tls1 \
                        -bugs -cipher -starttls -engine -tlsextdebug \
                        -no_ticket -sess_out -sess_in -rand'
                    ;;
                s_server)
                    options='-accept -context -verify -Verify -crl_check \
                        -crl_check_all -cert -certform -key -keyform -pass \
                        -dcert -dcertform -dkey -dkeyform -dpass -dhparam \
                        -nbio -nbio_test -crlf -debug -msg -state -CApath \
                        -CAfile -nocert -cipher -quiet -no_tmp_rsa -ssl2 \
                        -ssl3 -tls1 -no_ssl2 -no_ssl3 -no_tls1 -no_dhe \
                        -bugs -hack -www -WWW -HTTP -engine -tlsextdebug \
                        -no_ticket -id_prefix -rand'
                    ;;
                s_time)
                    options='-connect -www -cert -key -CApath -CAfile -reuse \
                        -new -verify -nbio -time -ssl2 -ssl3 -bugs -cipher'
                    ;;
                sess_id)
                    options='-inform -outform -in -out -text -noout -context \
                        ID'
                    ;;
                smime)
                    options='-encrypt -decrypt -sign -verify -pk7out -des \
                        -des3 -rc2-40 -rc2-64 -rc2-128 -aes128 -aes192 -aes256 \
                        -in -certfile -signer -recip -inform -passin -inkey \
                        -out -outform -content -to -from -subject -text -rand'
                    ;;
                speed)
                    options='-engine'
                    ;;
                verify)
                    options='-CApath -CAfile -purpose -untrusted -help \
                        -issuer_checks -verbose -certificates'
                    ;;
                x509)
                    options='-inform -outform -keyform -CAform -CAkeyform -in \
                        -out -serial -hash -subject_hash -issuer_hash -subject \
                        -issuer -nameopt -email -startdate -enddate -purpose \
                        -dates -modulus -fingerprint -alias -noout -trustout \
                        -clrtrust -clrreject -addtrust -addreject -setalias \
                        -days -set_serial -signkey -x509toreq -req -CA -CAkey \
                        -CAcreateserial -CAserial -text -C -md2 -md5 -sha1 \
                        -mdc2 -clrext -extfile -extensions -engine'
                    ;;
                md5|md4|md2|sha1|sha|mdc2|ripemd160)
                    options='-c -d'
                    ;;
            esac
            COMPREPLY=( $( compgen -W "$options" -- "$cur" ) )
        else
            if [[ "$command" == speed ]]; then
                COMPREPLY=( $( compgen -W 'md2 mdc2 md5 hmac sha1 rmd160 \
                    idea-cbc rc2-cbc rc5-cbc bf-cbc des-cbc des-ede3 rc4 \
                    rsa512 rsa1024 rsa2048 rsa4096 dsa512 dsa1024 dsa2048 idea \
                    rc2 des rsa blowfish' -- "$cur" ) )
            else
                _filedir
            fi
        fi
    fi
}
complete -F _openssl -o default openssl
}

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