Revert all non-bugfixes merged since the last release.

Revert "Fix documentation. (#751)"
Revert "ACME modules: simplify code, refactor argspec handling code, move csr/csr_content to own docs fragment (#750)"
Revert "Refactor and extend argument spec helper, use for ACME modules (#749)"
Revert "Avoid exception if certificate has no AKI in acme_certificate. (#748)"
Revert "ACME: improve acme_certificate docs, include cert_id in acme_certificate_renewal_info return value (#747)"
Revert "Add acme_certificate_renewal_info module (#746)"
Revert "Refactor time code, add tests, fix bug when parsing absolute timestamps that omit seconds (#745)"
Revert "Add tests for acme_certificate_deactivate_authz module. (#744)"
Revert "Create acme_certificate_deactivate_authz module (#741)"
Revert "acme_certificate: allow to request renewal of a certificate according to ARI (#739)"
Revert "Implement basic acme_ari_info module. (#732)"
Revert "Add function for retrieval of ARI information. (#738)"
Revert "acme module utils: add functions for parsing Retry-After header values and computation of ARI certificate IDs (#737)"
Revert "Implement certificate information retrieval code in the ACME backends. (#736)"
Revert "Split up the default acme docs fragment to allow modules ot not need account data. (#735)"

This reverts commits 5e59c5261e, aa82575a78,
f3c9cb7a8a, f82b335916, 553ab45f46,
59606d48ad, 0a15be1017, 9501a28a93,
d906914737, 33d278ad8f, 6d4fc589ae,
9614b09f7a, af5f4b57f8, c6fbe58382,
and afe7f7522c.

plugins/module_utils/acme/utils.py

@@ -10,7 +10,6 @@ __metaclass__ = type
 
 
 import base64
-import datetime
 import re
 import textwrap
 import traceback
@@ -20,10 +19,6 @@ from ansible.module_utils.six.moves.urllib.parse import unquote
 
 from ansible_collections.community.crypto.plugins.module_utils.acme.errors import ModuleFailException
 
-from ansible_collections.community.crypto.plugins.module_utils.crypto.math import convert_int_to_bytes
-
-from ansible_collections.community.crypto.plugins.module_utils.time import get_now_datetime
-
 
 def nopad_b64(data):
     return base64.urlsafe_b64encode(data).decode('utf8').replace("=", "")
@@ -70,61 +65,8 @@ def pem_to_der(pem_filename=None, pem_content=None):
 def process_links(info, callback):
     '''
     Process link header, calls callback for every link header with the URL and relation as options.
-
-    https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Link
     '''
     if 'link' in info:
         link = info['link']
         for url, relation in re.findall(r'<([^>]+)>;\s*rel="(\w+)"', link):
             callback(unquote(url), relation)
-
-
-def parse_retry_after(value, relative_with_timezone=True, now=None):
-    '''
-    Parse the value of a Retry-After header and return a timestamp.
-
-    https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Retry-After
-    '''
-    # First try a number of seconds
-    try:
-        delta = datetime.timedelta(seconds=int(value))
-        if now is None:
-            now = get_now_datetime(relative_with_timezone)
-        return now + delta
-    except ValueError:
-        pass
-
-    try:
-        return datetime.datetime.strptime(value, '%a, %d %b %Y %H:%M:%S GMT')
-    except ValueError:
-        pass
-
-    raise ValueError('Cannot parse Retry-After header value %s' % repr(value))
-
-
-def compute_cert_id(
-    backend,
-    cert_info=None,
-    cert_filename=None,
-    cert_content=None,
-    none_if_required_information_is_missing=False,
-):
-    # Obtain certificate info if not provided
-    if cert_info is None:
-        cert_info = backend.get_cert_information(cert_filename=cert_filename, cert_content=cert_content)
-
-    # Convert Authority Key Identifier to string
-    if cert_info.authority_key_identifier is None:
-        if none_if_required_information_is_missing:
-            return None
-        raise ModuleFailException('Certificate has no Authority Key Identifier extension')
-    aki = to_native(base64.urlsafe_b64encode(cert_info.authority_key_identifier)).replace('=', '')
-
-    # Convert serial number to string
-    serial_bytes = convert_int_to_bytes(cert_info.serial_number)
-    if ord(serial_bytes[:1]) >= 128:
-        serial_bytes = b'\x00' + serial_bytes
-    serial = to_native(base64.urlsafe_b64encode(serial_bytes)).replace('=', '')
-
-    # Compose cert ID
-    return '{aki}.{serial}'.format(aki=aki, serial=serial)