From cf32ae029098853fdbc557ed26e2dcc8ba201a62 Mon Sep 17 00:00:00 2001
From: GGabriele <gabrielegerbino@gmail.com>
Date: Wed, 31 Aug 2016 16:35:19 +0200
Subject: [PATCH] Adding nxos_acl module

---
 network/nxos/nxos_acl.py | 1001 ++++++++++++++++++++++++++++++++++++++
 1 file changed, 1001 insertions(+)
 create mode 100644 network/nxos/nxos_acl.py

diff --git a/network/nxos/nxos_acl.py b/network/nxos/nxos_acl.py
new file mode 100644
index 00000000000..eac9f52efe7
--- /dev/null
+++ b/network/nxos/nxos_acl.py
@@ -0,0 +1,1001 @@
+#!/usr/bin/python
+#
+# This file is part of Ansible
+#
+# Ansible is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# Ansible is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with Ansible.  If not, see <http://www.gnu.org/licenses/>.
+#
+
+DOCUMENTATION = '''
+---
+module: nxos_acl
+version_added: "2.2"
+short_description: Manages access list entries for ACLs.
+description:
+    - Manages access list entries for ACLs.
+extends_documentation_fragment: nxos
+author:
+    - Jason Edelman (@jedelman8)
+    - Gabriele Gerbino (@GGabriele)
+notes:
+    - I(state)=absent removes the ACE if it exists
+    - I(state)=delete_acl deleted the ACL if it exists
+    - for idempotency, use port numbers for the src/dest port
+      params like I(src_port1) and names for the well defined protocols
+      for the I(proto) param.
+    - while this module is idempotent in that if the ace as presented in the
+      task is identical to the one on the switch, no changes will be made. If
+      there is any difference, what is in Ansible will be pushed (configured
+      options will be overridden).  This is to improve security, but at the
+      same time remember an ACE is removed, then re-added, so if there is a
+      change, the new ACE will be exacty what params you are sending to the
+      module.
+options:
+    seq:
+        description:
+            - sequence number of the entry (ACE)
+        required: true
+    name:
+        description:
+            - Case sensitive name of the access list (ACL)
+        required: true
+    action:
+        description:
+            - action of the ACE
+        required: true
+        choices: ['permit', 'deny', 'remark']
+    remark:
+        description:
+            - If action is set to remark, this is the description
+        required: false
+        default: null
+    proto:
+        description:
+            - port number or protocol (as supported by the switch)
+        required: true
+    src:
+        description:
+            - src ip and mask using IP/MASK notation and supports keyword 'any'
+        required: true
+    src_port_op:
+        description:
+            - src port operands such as eq, neq, gt, lt, range
+        required: false
+        default: null
+        choices: ['any', 'eq', 'gt', 'lt', 'neq', 'range']
+    src_port1:
+        description:
+            - port/protocol and also first (lower) port when using range
+              operand
+        required: false
+        default: null
+    src_port2:
+        description:
+            - second (end) port when using range operand
+        required: false
+        default: null
+    dest:
+        description:
+            - dest ip and mask using IP/MASK notation and supports the
+              keyword 'any'
+        required: true
+        default: null
+    dest_port_op:
+        description:
+            - dest port operands such as eq, neq, gt, lt, range
+        required: false
+        default: null
+        choices: ['any', 'eq', 'gt', 'lt', 'neq', 'range']
+    dest_port1:
+        description:
+            - port/protocol and also first (lower) port when using range
+              operand
+        required: false
+        default: null
+    dest_port2:
+        description:
+            - second (end) port when using range operand
+        required: false
+        default: null
+    log:
+        description:
+            - Log matches against this entry
+        required: false
+        default: null
+        choices: ['enable']
+    urg:
+        description:
+            - Match on the URG bit
+        required: false
+        default: null
+        choices: ['enable']
+    ack:
+        description:
+            - Match on the ACK bit
+        required: false
+        default: null
+        choices: ['enable']
+    psh:
+        description:
+            - Match on the PSH bit
+        required: false
+        default: null
+        choices: ['enable']
+    rst:
+        description:
+            - Match on the RST bit
+        required: false
+        default: null
+        choices: ['enable']
+    syn:
+        description:
+            - Match on the SYN bit
+        required: false
+        default: null
+        choices: ['enable']
+    fin:
+        description:
+            - Match on the FIN bit
+        required: false
+        default: null
+        choices: ['enable']
+    established:
+        description:
+            - Match established connections
+        required: false
+        default: null
+        choices: ['enable']
+    fragments:
+        description:
+            - Check non-initial fragments
+        required: false
+        default: null
+        choices: ['enable']
+    time-range:
+        description:
+            - Name of time-range to apply
+        required: false
+        default: null
+    precedence:
+        description:
+            - Match packets with given precedence
+        required: false
+        default: null
+        choices: ['critical', 'flash', 'flash-override', 'immediate',
+                  'internet', 'network', 'priority', 'routine']
+    dscp:
+        description:
+            - Match packets with given dscp value
+        required: false
+        default: null
+        choices: ['af11, 'af12, 'af13, 'af21', 'af22', 'af23','af31','af32',
+                  'af33', 'af41', 'af42', 'af43', 'cs1', 'cs2', 'cs3', 'cs4',
+                  'cs5', 'cs6', 'cs7', 'default', 'ef']
+    state:
+        description:
+            - Specify desired state of the resource
+        required: false
+        default: present
+        choices: ['present','absent','delete_acl']
+'''
+
+EXAMPLES = '''
+
+# configure ACL ANSIBLE
+- nxos_acl:
+    name: ANSIBLE
+    seq: 10
+    action: permit
+    proto: tcp
+    src: 1.1.1.1/24
+    dest: any
+    state: present
+    provider: "{{ nxos_provider }}"
+'''
+
+
+# COMMON CODE FOR MIGRATION
+
+import re
+import time
+import collections
+import itertools
+import shlex
+import itertools
+
+from ansible.module_utils.basic import BOOLEANS_TRUE, BOOLEANS_FALSE
+
+DEFAULT_COMMENT_TOKENS = ['#', '!']
+
+class ConfigLine(object):
+
+    def __init__(self, text):
+        self.text = text
+        self.children = list()
+        self.parents = list()
+        self.raw = None
+
+    @property
+    def line(self):
+        line = ['set']
+        line.extend([p.text for p in self.parents])
+        line.append(self.text)
+        return ' '.join(line)
+
+    def __str__(self):
+        return self.raw
+
+    def __eq__(self, other):
+        if self.text == other.text:
+            return self.parents == other.parents
+
+    def __ne__(self, other):
+        return not self.__eq__(other)
+
+def ignore_line(text, tokens=None):
+    for item in (tokens or DEFAULT_COMMENT_TOKENS):
+        if text.startswith(item):
+            return True
+
+def get_next(iterable):
+    item, next_item = itertools.tee(iterable, 2)
+    next_item = itertools.islice(next_item, 1, None)
+    return itertools.izip_longest(item, next_item)
+
+def parse(lines, indent, comment_tokens=None):
+    toplevel = re.compile(r'\S')
+    childline = re.compile(r'^\s*(.+)$')
+
+    ancestors = list()
+    config = list()
+
+    for line in str(lines).split('\n'):
+        text = str(re.sub(r'([{};])', '', line)).strip()
+
+        cfg = ConfigLine(text)
+        cfg.raw = line
+
+        if not text or ignore_line(text, comment_tokens):
+            continue
+
+        # handle top level commands
+        if toplevel.match(line):
+            ancestors = [cfg]
+
+        # handle sub level commands
+        else:
+            match = childline.match(line)
+            line_indent = match.start(1)
+            level = int(line_indent / indent)
+            parent_level = level - 1
+
+            cfg.parents = ancestors[:level]
+
+            if level > len(ancestors):
+                config.append(cfg)
+                continue
+
+            for i in range(level, len(ancestors)):
+                ancestors.pop()
+
+            ancestors.append(cfg)
+            ancestors[parent_level].children.append(cfg)
+
+        config.append(cfg)
+
+    return config
+
+
+class CustomNetworkConfig(object):
+
+    def __init__(self, indent=None, contents=None, device_os=None):
+        self.indent = indent or 1
+        self._config = list()
+        self._device_os = device_os
+
+        if contents:
+            self.load(contents)
+
+    @property
+    def items(self):
+        return self._config
+
+    @property
+    def lines(self):
+        lines = list()
+        for item, next_item in get_next(self.items):
+            if next_item is None:
+                lines.append(item.line)
+            elif not next_item.line.startswith(item.line):
+                lines.append(item.line)
+        return lines
+
+    def __str__(self):
+        text = ''
+        for item in self.items:
+            if not item.parents:
+                expand = self.get_section(item.text)
+                text += '%s\n' % self.get_section(item.text)
+        return str(text).strip()
+
+    def load(self, contents):
+        self._config = parse(contents, indent=self.indent)
+
+    def load_from_file(self, filename):
+        self.load(open(filename).read())
+
+    def get(self, path):
+        if isinstance(path, basestring):
+            path = [path]
+        for item in self._config:
+            if item.text == path[-1]:
+                parents = [p.text for p in item.parents]
+                if parents == path[:-1]:
+                    return item
+
+    def search(self, regexp, path=None):
+        regex = re.compile(r'^%s' % regexp, re.M)
+
+        if path:
+            parent = self.get(path)
+            if not parent or not parent.children:
+                return
+            children = [c.text for c in parent.children]
+            data = '\n'.join(children)
+        else:
+            data = str(self)
+
+        match = regex.search(data)
+        if match:
+            if match.groups():
+                values = match.groupdict().values()
+                groups = list(set(match.groups()).difference(values))
+                return (groups, match.groupdict())
+            else:
+                return match.group()
+
+    def findall(self, regexp):
+        regexp = r'%s' % regexp
+        return re.findall(regexp, str(self))
+
+    def expand(self, obj, items):
+        block = [item.raw for item in obj.parents]
+        block.append(obj.raw)
+
+        current_level = items
+        for b in block:
+            if b not in current_level:
+                current_level[b] = collections.OrderedDict()
+            current_level = current_level[b]
+        for c in obj.children:
+            if c.raw not in current_level:
+                current_level[c.raw] = collections.OrderedDict()
+
+    def to_lines(self, section):
+        lines = list()
+        for entry in section[1:]:
+            line = ['set']
+            line.extend([p.text for p in entry.parents])
+            line.append(entry.text)
+            lines.append(' '.join(line))
+        return lines
+
+    def to_block(self, section):
+        return '\n'.join([item.raw for item in section])
+
+    def get_section(self, path):
+        try:
+            section = self.get_section_objects(path)
+            if self._device_os == 'junos':
+                return self.to_lines(section)
+            return self.to_block(section)
+        except ValueError:
+            return list()
+
+    def get_section_objects(self, path):
+        if not isinstance(path, list):
+            path = [path]
+        obj = self.get_object(path)
+        if not obj:
+            raise ValueError('path does not exist in config')
+        return self.expand_section(obj)
+
+    def expand_section(self, configobj, S=None):
+        if S is None:
+            S = list()
+        S.append(configobj)
+        for child in configobj.children:
+            if child in S:
+                continue
+            self.expand_section(child, S)
+        return S
+
+    def flatten(self, data, obj=None):
+        if obj is None:
+            obj = list()
+        for k, v in data.items():
+            obj.append(k)
+            self.flatten(v, obj)
+        return obj
+
+    def get_object(self, path):
+        for item in self.items:
+            if item.text == path[-1]:
+                parents = [p.text for p in item.parents]
+                if parents == path[:-1]:
+                    return item
+
+    def get_children(self, path):
+        obj = self.get_object(path)
+        if obj:
+            return obj.children
+
+    def difference(self, other, path=None, match='line', replace='line'):
+        updates = list()
+
+        config = self.items
+        if path:
+            config = self.get_children(path) or list()
+
+        if match == 'line':
+            for item in config:
+                if item not in other.items:
+                    updates.append(item)
+
+        elif match == 'strict':
+            if path:
+                current = other.get_children(path) or list()
+            else:
+                current = other.items
+
+            for index, item in enumerate(config):
+                try:
+                    if item != current[index]:
+                        updates.append(item)
+                except IndexError:
+                    updates.append(item)
+
+        elif match == 'exact':
+            if path:
+                current = other.get_children(path) or list()
+            else:
+                current = other.items
+
+            if len(current) != len(config):
+                updates.extend(config)
+            else:
+                for ours, theirs in itertools.izip(config, current):
+                    if ours != theirs:
+                        updates.extend(config)
+                        break
+
+        if self._device_os == 'junos':
+            return updates
+
+        diffs = collections.OrderedDict()
+        for update in updates:
+            if replace == 'block' and update.parents:
+                update = update.parents[-1]
+            self.expand(update, diffs)
+
+        return self.flatten(diffs)
+
+    def replace(self, replace, text=None, regex=None, parents=None,
+            add_if_missing=False, ignore_whitespace=False):
+        match = None
+
+        parents = parents or list()
+        if text is None and regex is None:
+            raise ValueError('missing required arguments')
+
+        if not regex:
+            regex = ['^%s$' % text]
+
+        patterns = [re.compile(r, re.I) for r in to_list(regex)]
+
+        for item in self.items:
+            for regexp in patterns:
+                if ignore_whitespace is True:
+                    string = item.text
+                else:
+                    string = item.raw
+                if regexp.search(item.text):
+                    if item.text != replace:
+                        if parents == [p.text for p in item.parents]:
+                            match = item
+                            break
+
+        if match:
+            match.text = replace
+            indent = len(match.raw) - len(match.raw.lstrip())
+            match.raw = replace.rjust(len(replace) + indent)
+
+        elif add_if_missing:
+            self.add(replace, parents=parents)
+
+
+    def add(self, lines, parents=None):
+        """Adds one or lines of configuration
+        """
+
+        ancestors = list()
+        offset = 0
+        obj = None
+
+        ## global config command
+        if not parents:
+            for line in to_list(lines):
+                item = ConfigLine(line)
+                item.raw = line
+                if item not in self.items:
+                    self.items.append(item)
+
+        else:
+            for index, p in enumerate(parents):
+                try:
+                    i = index + 1
+                    obj = self.get_section_objects(parents[:i])[0]
+                    ancestors.append(obj)
+
+                except ValueError:
+                    # add parent to config
+                    offset = index * self.indent
+                    obj = ConfigLine(p)
+                    obj.raw = p.rjust(len(p) + offset)
+                    if ancestors:
+                        obj.parents = list(ancestors)
+                        ancestors[-1].children.append(obj)
+                    self.items.append(obj)
+                    ancestors.append(obj)
+
+            # add child objects
+            for line in to_list(lines):
+                # check if child already exists
+                for child in ancestors[-1].children:
+                    if child.text == line:
+                        break
+                else:
+                    offset = len(parents) * self.indent
+                    item = ConfigLine(line)
+                    item.raw = line.rjust(len(line) + offset)
+                    item.parents = ancestors
+                    ancestors[-1].children.append(item)
+                    self.items.append(item)
+
+
+def argument_spec():
+    return dict(
+        # config options
+        running_config=dict(aliases=['config']),
+        save_config=dict(type='bool', default=False, aliases=['save'])
+    )
+nxos_argument_spec = argument_spec()
+
+def get_config(module):
+    config = module.params['running_config']
+    if not config:
+        config = module.get_config()
+    return CustomNetworkConfig(indent=2, contents=config)
+
+def load_config(module, candidate):
+    config = get_config(module)
+
+    commands = candidate.difference(config)
+    commands = [str(c).strip() for c in commands]
+
+    save_config = module.params['save_config']
+
+    result = dict(changed=False)
+
+    if commands:
+        if not module.check_mode:
+            module.configure(commands)
+            if save_config:
+                module.config.save_config()
+
+        result['changed'] = True
+        result['updates'] = commands
+
+    return result
+# END OF COMMON CODE
+
+
+def get_cli_body_ssh(command, response, module):
+    """Get response for when transport=cli.  This is kind of a hack and mainly
+    needed because these modules were originally written for NX-API.  And
+    not every command supports "| json" when using cli/ssh.  As such, we assume
+    if | json returns an XML string, it is a valid command, but that the
+    resource doesn't exist yet. Instead, we assume if '^' is found in response,
+    it is an invalid command.
+    """
+    if 'xml' in response[0]:
+        body = []
+    elif '^' in response[0]:
+        body = response
+    else:
+        try:
+            body = [json.loads(response[0])]
+        except ValueError:
+            module.fail_json(msg='Command does not support JSON output',
+                             command=command)
+    return body
+
+
+def execute_show(cmds, module, command_type=None):
+    try:
+        if command_type:
+            response = module.execute(cmds, command_type=command_type)
+        else:
+            response = module.execute(cmds)
+    except ShellError:
+        clie = get_exception()
+        module.fail_json(msg='Error sending {0}'.format(cmds),
+                         error=str(clie))
+    return response
+
+
+def execute_show_command(command, module, command_type='cli_show'):
+    if module.params['transport'] == 'cli':
+        command += ' | json'
+        cmds = [command]
+        response = execute_show(cmds, module)
+        body = get_cli_body_ssh(command, response, module)
+    elif module.params['transport'] == 'nxapi':
+        cmds = [command]
+        body = execute_show(cmds, module, command_type=command_type)
+
+    return body
+
+
+def get_acl(module, acl_name, seq_number):
+    command = 'show ip access-list'
+    new_acl = []
+    saveme = {}
+    seqs = []
+    acl_body = {}
+
+    body = execute_show_command(command, module)[0]
+    all_acl_body = body['TABLE_ip_ipv6_mac']['ROW_ip_ipv6_mac']
+
+    for acl in all_acl_body:
+        if acl.get('acl_name') == acl_name:
+            acl_body = acl
+
+    try:
+        acl_entries = acl_body['TABLE_seqno']['ROW_seqno']
+        acl_name = acl_body.get('acl_name')
+    except KeyError:  # could be raised if no ACEs are configured for an ACL
+        return saveme, [{'acl': 'no_entries'}], seqs
+
+    if isinstance(acl_entries, dict):
+        acl_entries = [acl_entries]
+
+    for each in acl_entries:
+        temp = collections.OrderedDict()
+        keep = {}
+        temp['name'] = acl_name
+        temp['seq'] = str(each.get('seqno'))
+        temp['options'] = {}
+        remark = each.get('remark')
+        if remark:
+            temp['remark'] = remark
+            temp['action'] = 'remark'
+        else:
+            temp['action'] = each.get('permitdeny')
+            temp['proto'] = each.get('proto', each.get('proto_str', each.get('ip')))
+            temp['src'] = each.get('src_any', each.get('src_ip_prefix'))
+            temp['src_port_op'] = each.get('src_port_op')
+            temp['src_port1'] = each.get('src_port1_num')
+            temp['src_port2'] = each.get('src_port2_num')
+            temp['dest'] = each.get('dest_any', each.get('dest_ip_prefix'))
+            temp['dest_port_op'] = each.get('dest_port_op')
+            temp['dest_port1'] = each.get('dest_port1_num')
+            temp['dest_port2'] = each.get('dest_port2_num')
+
+            options = collections.OrderedDict()
+            options['log'] = each.get('log')
+            options['urg'] = each.get('urg')
+            options['ack'] = each.get('ack')
+            options['psh'] = each.get('psh')
+            options['rst'] = each.get('rst')
+            options['syn'] = each.get('syn')
+            options['fin'] = each.get('fin')
+            options['established'] = each.get('established')
+            options['dscp'] = each.get('dscp_str')
+            options['precedence'] = each.get('precedence_str')
+            options['fragments'] = each.get('fragments')
+            options['time_range'] = each.get('timerange')
+
+            options_no_null = {}
+            for key, value in options.iteritems():
+                if value is not None:
+                    options_no_null[key] = value
+
+            keep['options'] = options_no_null
+
+        for key, value in temp.iteritems():
+            if value:
+                keep[key] = value
+        # ensure options is always in the dict
+        if keep.get('options', 'DNE') == 'DNE':
+            keep['options'] = {}
+
+        if keep.get('seq') == seq_number:
+            saveme = dict(keep)
+
+        seqs.append(str(keep.get('seq')))
+        new_acl.append(keep)
+
+    return saveme, new_acl, seqs
+
+
+def _acl_operand(operand, srcp1, sprcp2):
+    sub_entry = ' ' + operand
+
+    if operand == 'range':
+        sub_entry += ' ' + srcp1 + ' ' + sprcp2
+    else:
+        sub_entry += ' ' + srcp1
+
+    return sub_entry
+
+
+def config_core_acl(proposed):
+    seq = proposed.get('seq')
+    action = proposed.get('action')
+    remark = proposed.get('remark')
+    proto = proposed.get('proto')
+    src = proposed.get('src')
+    src_port_op = proposed.get('src_port_op')
+    src_port1 = proposed.get('src_port1')
+    src_port2 = proposed.get('src_port2')
+
+    dest = proposed.get('dest')
+    dest_port_op = proposed.get('dest_port_op')
+    dest_port1 = proposed.get('dest_port1')
+    dest_port2 = proposed.get('dest_port2')
+
+    ace_start_entries = [action, proto, src]
+    if not remark:
+        ace = seq + ' ' + ' '.join(ace_start_entries)
+        if src_port_op:
+            ace += _acl_operand(src_port_op, src_port1, src_port2)
+        ace += ' ' + dest
+        if dest_port_op:
+            ace += _acl_operand(dest_port_op, dest_port1, dest_port2)
+    else:
+        ace = seq + ' remark ' + remark
+
+    return ace
+
+
+def config_acl_options(options):
+    ENABLE_ONLY = ['psh', 'urg', 'log', 'ack', 'syn',
+                   'established', 'rst', 'fin', 'fragments',
+                   'log']
+
+    OTHER = ['dscp', 'precedence', 'time-range']
+    # packet-length is the only option not currently supported
+
+    if options.get('time_range'):
+        options['time-range'] = options.get('time_range')
+        options.pop('time_range')
+
+    command = ''
+    for option, value in options.iteritems():
+        if option in ENABLE_ONLY:
+            if value == 'enable':
+                command += ' ' + option
+        elif option in OTHER:
+            command += ' ' + option + ' ' + value
+    if command:
+        command = command.strip()
+        return command
+
+
+def flatten_list(command_lists):
+    flat_command_list = []
+    for command in command_lists:
+        if isinstance(command, list):
+            flat_command_list.extend(command)
+        else:
+            flat_command_list.append(command)
+    return flat_command_list
+
+
+def execute_config_command(commands, module):
+    try:
+        module.configure(commands)
+    except ShellError:
+        clie = get_exception()
+        module.fail_json(msg='Error sending CLI commands',
+                         error=str(clie), commands=commands)
+
+
+def main():
+    argument_spec = dict(
+            seq=dict(required=True, type='str'),
+            name=dict(required=True, type='str'),
+            action=dict(required=True, choices=['remark', 'permit', 'deny']),
+            remark=dict(requried=False, type='str'),
+            proto=dict(required=True, type='str'),
+            src=dict(required=True, type='str'),
+            src_port_op=dict(required=False),
+            src_port1=dict(required=False, type='str'),
+            src_port2=dict(required=False, type='str'),
+            dest=dict(required=True, type='str'),
+            dest_port_op=dict(required=False),
+            dest_port1=dict(required=False, type='str'),
+            dest_port2=dict(required=False, type='str'),
+            log=dict(required=False, choices=['enable']),
+            urg=dict(required=False, choices=['enable']),
+            ack=dict(required=False, choices=['enable']),
+            psh=dict(required=False, choices=['enable']),
+            rst=dict(required=False, choices=['enable']),
+            syn=dict(required=False, choices=['enable']),
+            fragments=dict(required=False, choices=['enable']),
+            fin=dict(required=False, choices=['enable']),
+            established=dict(required=False, choices=['enable']),
+            time_range=dict(required=False),
+            precedence=dict(required=False, choices=['critical', 'flash',
+                                                     'flash-override',
+                                                     'immediate', 'internet',
+                                                     'network', 'priority',
+                                                     'routine']),
+            dscp=dict(required=False, choices=['af11', 'af12', 'af13', 'af21',
+                                               'af22', 'af23', 'af31', 'af32',
+                                               'af33', 'af41', 'af42', 'af43',
+                                               'cs1', 'cs2', 'cs3', 'cs4',
+                                               'cs5', 'cs6', 'cs7', 'default',
+                                               'ef']),
+            state=dict(choices=['absent', 'present', 'delete_acl'],
+                       default='present'),
+            protocol=dict(choices=['http', 'https'], default='http'),
+            host=dict(required=True),
+            username=dict(type='str'),
+            password=dict(no_log=True, type='str'),
+    )
+    argument_spec.update(nxos_argument_spec)
+    module = get_module(argument_spec=argument_spec,
+                        supports_check_mode=True)
+
+    state = module.params['state']
+    action = module.params['action']
+    remark = module.params['remark']
+    dscp = module.params['dscp']
+    precedence = module.params['precedence']
+    seq = module.params['seq']
+    name = module.params['name']
+    seq = module.params['seq']
+
+    if action == 'remark' and not remark:
+        module.fail_json(msg='when state is action, remark param is also '
+                             'required')
+
+    REQUIRED = ['seq', 'name', 'action', 'proto', 'src', 'dest']
+    ABSENT = ['name', 'seq']
+    if state == 'present':
+        if action and remark and seq:
+            pass
+        else:
+            for each in REQUIRED:
+                if module.params[each] is None:
+                    module.fail_json(msg="req'd params when state is present:",
+                                     params=REQUIRED)
+    elif state == 'absent':
+        for each in ABSENT:
+            if module.params[each] is None:
+                module.fail_json(msg='require params when state is absent',
+                                 params=ABSENT)
+    elif state == 'delete_acl':
+        if module.params['name'] is None:
+            module.fail_json(msg="param name req'd when state is delete_acl")
+
+    if dscp and precedence:
+        module.fail_json(msg='only one of the params dscp/precedence '
+                             'are allowed')
+
+    OPTIONS_NAMES = ['log', 'urg', 'ack', 'psh', 'rst', 'syn', 'fin',
+                     'established', 'dscp', 'precedence', 'fragments',
+                     'time_range']
+
+    CORE = ['seq', 'name', 'action', 'proto', 'src', 'src_port_op',
+            'src_port1', 'src_port2', 'dest', 'dest_port_op',
+            'dest_port1', 'dest_port2', 'remark']
+
+    proposed_core = dict((param, value) for (param, value) in
+                         module.params.iteritems()
+                         if param in CORE and value is not None)
+
+    proposed_options = dict((param, value) for (param, value) in
+                            module.params.iteritems()
+                            if param in OPTIONS_NAMES and value is not None)
+    proposed = {}
+    proposed.update(proposed_core)
+    proposed.update(proposed_options)
+
+    existing_options = {}
+
+    # getting existing existing_core=dict, acl=list, seq=list
+    existing_core, acl, seqs = get_acl(module, name, seq)
+    if existing_core:
+        existing_options = existing_core.get('options')
+        existing_core.pop('options')
+
+    end_state = acl
+    commands = []
+    changed = False
+    delta_core = {}
+    delta_options = {}
+
+    if not existing_core.get('remark'):
+        delta_core = dict(
+            set(proposed_core.iteritems()).difference(
+                existing_core.iteritems())
+            )
+        delta_options = dict(
+            set(proposed_options.iteritems()).difference(
+                existing_options.iteritems())
+        )
+
+    if state == 'present':
+        if delta_core or delta_options:
+            if existing_core:  # if the ace exists already
+                commands.append(['no {0}'.format(seq)])
+            if delta_options:
+                myacl_str = config_core_acl(proposed_core)
+                myacl_str += ' ' + config_acl_options(proposed_options)
+            else:
+                myacl_str = config_core_acl(proposed_core)
+            command = [myacl_str]
+            commands.append(command)
+    elif state == 'absent':
+        if existing_core:
+            commands.append(['no {0}'.format(seq)])
+    elif state == 'delete_acl':
+        if acl[0].get('acl') != 'no_entries':
+            commands.append(['no ip access-list {0}'.format(name)])
+
+    results = {}
+    cmds = []
+    if commands:
+        preface = []
+        if state in ['present', 'absent']:
+            preface = ['ip access-list {0}'.format(name)]
+            commands.insert(0, preface)
+
+        cmds = flatten_list(commands)
+        if module.check_mode:
+            module.exit_json(changed=True, commands=cmds)
+        else:
+            execute_config_command(cmds, module)
+            changed = True
+            existing_core, end_state, seqs = get_acl(module, name, seq)
+
+    results['proposed'] = proposed
+    results['existing'] = existing_core
+    results['state'] = state
+    results['changed'] = changed
+    results['updates'] = cmds
+    results['end_state'] = end_state
+
+    module.exit_json(**results)
+
+
+from ansible.module_utils.basic import *
+from ansible.module_utils.urls import *
+from ansible.module_utils.shell import *
+from ansible.module_utils.netcfg import *
+from ansible.module_utils.nxos import *
+if __name__ == '__main__':
+    main()