<commit_before>"""Tools for checking certificate revocation."""
import logging

from certbot import errors
from certbot import util

logger = logging.getLogger(__name__)


REV_LABEL = "REVOKED"

INSTALL_LABEL = "(Installed)"


def revoked_status(cert_path, chain_path):
    """Get revoked status for a particular cert version.

    .. todo:: Make this a non-blocking call

    :param str cert_path: Path to certificate
    :param str chain_path: Path to chain certificate

    """
    url, _ = util.run_script(
        ["openssl", "x509", "-in", cert_path, "-noout", "-ocsp_uri"])

    url = url.rstrip()
    host = url.partition("://")[2].rstrip("/")
    if not host:
        raise errors.Error(
            "Unable to get OCSP host from cert, url - %s", url)

    # This was a PITA...
    # Thanks to "Bulletproof SSL and TLS - <NAME>" for helping me out
    try:
        output, _ = util.run_script(
            ["openssl", "ocsp",
            "-no_nonce", "-header", "Host="+host,
            "-issuer", chain_path,
            "-cert", cert_path,
            "-url", url,
            "-CAfile", chain_path,
            "-verify_other", chain_path])
    except errors.SubprocessError:
        return "OCSP Failure"

    return _translate_ocsp_query(cert_path, output)


def _translate_ocsp_query(cert_path, ocsp_output):
    """Returns a label string out of the query."""
    if not "Response verify OK":
        return "Revocation Unknown"
    if cert_path + ": good" in ocsp_output:
        return ""<commit_msg>Run with both old and new versions of openssl<commit_after>"""Tools for checking certificate revocation."""
import logging

from subprocess import Popen, PIPE

from certbot import errors
from certbot import util

logger = logging.getLogger(__name__)


REV_LABEL = "REVOKED"

INSTALL_LABEL = "(Installed)"


def revoked_status(cert_path, chain_path):
    """Get revoked status for a particular cert version.

    .. todo:: Make this a non-blocking call

    :param str cert_path: Path to certificate
    :param str chain_path: Path to chain certificate

    """

    url, _ = util.run_script(
        ["openssl", "x509", "-in", cert_path, "-noout", "-ocsp_uri"])

    url = url.rstrip()
    host = url.partition("://")[2].rstrip("/")
    if not host:
        raise errors.Error(
            "Unable to get OCSP host from cert, url - %s", url)

    # New versions of openssl want -header var=val, old ones want -header var val
    test_host_format = Popen(["openssl", "ocsp", "-header", "var", "val"],
                             stdout=PIPE, stderr=PIPE)
    _out, err = test_host_format.communicate()
    if "Missing =" in err:
        host_arg = ["Host=" + host]
    else:
        host_arg = ["Host", host]

    # jdkasten thanks "Bulletproof SSL and TLS - <NAME>" for documenting this!
    try:
        output, _ = util.run_script(
            ["openssl", "ocsp",
            "-no_nonce",
            "-header"] + host_arg + [
            "-issuer", chain_path,
            "-cert", cert_path,
            "-url", url,
            "-CAfile", chain_path,
            "-verify_other", chain_path])
    except errors.SubprocessError:
        return "OCSP Failure"

    return _translate_ocsp_query(cert_path, output)


def _translate_ocsp_query(cert_path, ocsp_output):
    """Returns a label string out of the query."""
    if not "Response verify OK":
        return "Revocation Unknown"
    if cert_path + ": good" in ocsp_output:
        return ""
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