initial commit

.drone.jsonnet

@@ -0,0 +1,148 @@
+local PipelineLinting = {
+    kind: "pipeline",
+    name: "linting",
+    platform: {
+        os: "linux",
+        arch: "amd64",
+    },
+    steps: [
+        {
+            name: "ansible-later",
+            image: "xoxys/ansible-later:latest",
+            environment: {
+                PY_COLORS: 1
+            },
+            commands: [
+                "git clone https://gitea.rknet.org/ansible/ansible-later-policy.git ~/policy",
+                "ansible-later -c ~/policy/config.yml"
+            ],
+        },
+    ],
+    trigger: {
+        ref: ["refs/heads/master", "refs/tags/**", "refs/pull/**"],
+    },
+};
+
+local PipelineDeployment = {
+    kind: "pipeline",
+    name: "deployment",
+    platform: {
+        os: "linux",
+        arch: "amd64",
+    },
+    concurrency: {
+        limit: 1
+    },
+    workspace: {
+        base: "/drone/src",
+        path: "xoxys.kernel"
+    },
+    steps: [
+        {
+            name: "ansible-molecule",
+            image: "xoxys/molecule:do-linux-amd64",
+            environment: {
+                DO_API_KEY: { "from_secret": "do_api_key" },
+                USER: "root",
+                MOLECULE_CUSTOM_MODULES_REPO: "https://gitea.rknet.org/ansible/custom_modules",
+                MOLECULE_CUSTOM_FILTERS_REPO: "https://gitea.rknet.org/ansible/custom_filters",
+                PY_COLORS: 1
+            },
+            commands: [
+                "/bin/bash /docker-entrypoint.sh",
+                "molecule test -s default",
+            ],
+        },
+    ],
+    depends_on: [
+        "linting",
+    ],
+    trigger: {
+        ref: ["refs/heads/master", "refs/tags/**"],
+    },
+};
+
+local PipelineDocumentation = {
+    kind: "pipeline",
+    name: "documentation",
+    platform: {
+        os: "linux",
+        arch: "amd64",
+    },
+    steps: [
+        {
+            name: "ansible-doctor",
+            image: "xoxys/ansible-doctor:latest",
+            environment: {
+                ANSIBLE_DOCTOR_LOG_LEVEL: "INFO",
+                ANSIBLE_DOCTOR_FORCE_OVERWRITE: true,
+                ANSIBLE_DOCTOR_EXCLUDE_FILES: "molecule/",
+                ANSIBLE_DOCTOR_CUSTOM_HEADER: "HEADER.md",
+                PY_COLORS: 1
+            },
+        },
+        {
+            name: "push-to-repo",
+            image: "plugins/git-action:latest",
+            settings: {
+                actions: ["commit", "push"],
+                author_email: "shipper@rknet.org",
+                author_name: "DroneShipper",
+                branch: "master",
+                message: "[SKIP CI] update readme",
+                remote: "https://gitea.rknet.org/ansible/xoxys.kernel",
+                netrc_machine: "gitea.rknet.org",
+                netrc_username: {"from_secret": "gitea_username"},
+                netrc_password: {"from_secret": "gitea_token"},
+            },
+            when: {
+                ref: ["refs/heads/master"],
+            },
+        },
+    ],
+    depends_on: [
+        "deployment",
+    ],
+    trigger: {
+        ref: ["refs/heads/master", "refs/tags/**", "refs/pull/**"],
+    },
+};
+
+local PipelineNotification= {
+    kind: "pipeline",
+    name: "notification",
+    platform: {
+        os: "linux",
+        arch: "amd64",
+    },
+    clone: {
+        disable: true,
+    },
+    steps: [
+        {
+            name: "matrix",
+            image: "plugins/matrix",
+            settings: {
+                homeserver: { "from_secret": "matrix_homeserver" },
+                roomid: { "from_secret": "matrix_roomid" },
+                template: "Status: **{{ build.status }}**<br/> Build: [{{ repo.Owner }}/{{ repo.Name }}]({{ build.link }}) ({{ build.branch }}) by {{ build.author }}<br/> Message: {{ build.message }}",
+                username: { "from_secret": "matrix_username" },
+                password: { "from_secret": "matrix_password" },
+            },
+        },
+    ],
+    depends_on: [
+        "documentation",
+    ],
+    trigger: {
+        status: [ "success", "failure" ],
+        ref: ["refs/heads/master", "refs/tags/**"],
+    },
+};
+
+[
+    PipelineLinting,
+    PipelineDeployment,
+    PipelineDocumentation,
+    PipelineNotification,
+]

.drone.yml

@@ -0,0 +1,148 @@
+---
+kind: pipeline
+name: linting
+
+platform:
+  os: linux
+  arch: amd64
+
+steps:
+- name: ansible-later
+  image: xoxys/ansible-later:latest
+  commands:
+  - git clone https://gitea.rknet.org/ansible/ansible-later-policy.git ~/policy
+  - ansible-later -c ~/policy/config.yml
+  environment:
+    PY_COLORS: 1
+
+trigger:
+  ref:
+  - refs/heads/master
+  - refs/tags/**
+  - refs/pull/**
+
+---
+kind: pipeline
+name: deployment
+
+platform:
+  os: linux
+  arch: amd64
+
+concurrency:
+  limit: 1
+
+workspace:
+  base: /drone/src
+  path: xoxys.kernel
+
+steps:
+- name: ansible-molecule
+  image: xoxys/molecule:do-linux-amd64
+  commands:
+  - /bin/bash /docker-entrypoint.sh
+  - molecule test -s default
+  environment:
+    DO_API_KEY:
+      from_secret: do_api_key
+    MOLECULE_CUSTOM_FILTERS_REPO: https://gitea.rknet.org/ansible/custom_filters
+    MOLECULE_CUSTOM_MODULES_REPO: https://gitea.rknet.org/ansible/custom_modules
+    PY_COLORS: 1
+    USER: root
+
+trigger:
+  ref:
+  - refs/heads/master
+  - refs/tags/**
+
+depends_on:
+- linting
+
+---
+kind: pipeline
+name: documentation
+
+platform:
+  os: linux
+  arch: amd64
+
+steps:
+- name: ansible-doctor
+  image: xoxys/ansible-doctor:latest
+  environment:
+    ANSIBLE_DOCTOR_CUSTOM_HEADER: HEADER.md
+    ANSIBLE_DOCTOR_EXCLUDE_FILES: molecule/
+    ANSIBLE_DOCTOR_FORCE_OVERWRITE: true
+    ANSIBLE_DOCTOR_LOG_LEVEL: INFO
+    PY_COLORS: 1
+
+- name: push-to-repo
+  image: plugins/git-action:latest
+  settings:
+    actions:
+    - commit
+    - push
+    author_email: shipper@rknet.org
+    author_name: DroneShipper
+    branch: master
+    message: "[SKIP CI] update readme"
+    netrc_machine: gitea.rknet.org
+    netrc_password:
+      from_secret: gitea_token
+    netrc_username:
+      from_secret: gitea_username
+    remote: https://gitea.rknet.org/ansible/xoxys.kernel
+  when:
+    ref:
+    - refs/heads/master
+
+trigger:
+  ref:
+  - refs/heads/master
+  - refs/tags/**
+  - refs/pull/**
+
+depends_on:
+- deployment
+
+---
+kind: pipeline
+name: notification
+
+platform:
+  os: linux
+  arch: amd64
+
+clone:
+  disable: true
+
+steps:
+- name: matrix
+  image: plugins/matrix
+  settings:
+    homeserver:
+      from_secret: matrix_homeserver
+    password:
+      from_secret: matrix_password
+    roomid:
+      from_secret: matrix_roomid
+    template: "Status: **{{ build.status }}**<br/> Build: [{{ repo.Owner }}/{{ repo.Name }}]({{ build.link }}) ({{ build.branch }}) by {{ build.author }}<br/> Message: {{ build.message }}"
+    username:
+      from_secret: matrix_username
+
+trigger:
+  ref:
+  - refs/heads/master
+  - refs/tags/**
+  status:
+  - success
+  - failure
+
+depends_on:
+- documentation
+
+---
+kind: signature
+hmac: 2cc589a9377534e945cf77181b67faff083e9ac3f7955b0f9891a82e117a7512
+
+...

.gitignore

@@ -0,0 +1,11 @@
+# ---> Ansible
+*.retry
+plugins
+library
+
+# ---> Python
+# Byte-compiled / optimized / DLL files
+__pycache__/
+*.py[cod]
+*$py.class
+

HEADER.md

@@ -0,0 +1,4 @@
+# xoxys.kernel
+  
+[![Build Status](https://drone.rknet.org/api/badges/ansible/xoxys.kernel/status.svg)](https://drone.rknet.org/ansible/xoxys.kernel)
+

LICENSE

@@ -0,0 +1,8 @@
+MIT License
+Copyright (c) <year> <copyright holders>
+
+Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

README.md

@@ -0,0 +1,2 @@
+# xoxys.kernel
+

defaults/main.yml

@@ -0,0 +1,7 @@
+---
+kernel_disable_modules:
+  - usb-storage
+kernel_blacklist_modules:
+  - firewire-core
+kernel_namespace_support_enabled: False
+kernel_coredump_enabled: True

handlers/main.yml

@@ -0,0 +1,6 @@
+---
+- name: Reload kernel configuration
+  command: "sysctl --system"
+  listen: __kernel_reload
+  become: True
+  become_user: root

meta/main.yml

@@ -0,0 +1,13 @@
+# Standards: 0.1
+---
+galaxy_info:
+  author: xoxys
+  description:
+  license: MIT
+  min_ansible_version: 2.4
+  platforms:
+    - name: EL
+      versions:
+        - 7
+  galaxy_tags:
+dependencies:

molecule/default/create.yml

@@ -0,0 +1,87 @@
+---
+- name: Create
+  hosts: localhost
+  connection: local
+  gather_facts: false
+  no_log: "{{ molecule_no_log }}"
+  vars:
+    ssh_user: root
+    ssh_port: 22
+
+    keypair_name: molecule_key
+    keypair_path: "{{ lookup('env', 'MOLECULE_EPHEMERAL_DIRECTORY') }}/ssh_key"
+  tasks:
+    - name: Create local keypair
+      user:
+        name: "{{ lookup('env', 'USER') }}"
+        generate_ssh_key: true
+        ssh_key_file: "{{ keypair_path }}"
+      register: local_keypair
+
+    - name: Create remote keypair
+      digital_ocean_sshkey:
+        name: "{{ keypair_name }}"
+        ssh_pub_key: "{{ local_keypair.ssh_public_key }}"
+        state: present
+      register: remote_keypair
+
+    - name: Create molecule instance(s)
+      digital_ocean_droplet:
+        name: "{{ item.name }}"
+        unique_name: true
+        region: "{{ item.region_id }}"
+        image: "{{ item.image_id }}"
+        size: "{{ item.size_id }}"
+        ssh_keys: "{{ remote_keypair.data.ssh_key.id }}"
+        wait: true
+        wait_timeout: 300
+        state: present
+      register: server
+      loop: "{{ molecule_yml.platforms }}"
+      async: 7200
+      poll: 0
+
+    - name: Wait for instance(s) creation to complete
+      async_status:
+        jid: "{{ item.ansible_job_id }}"
+      register: digitalocean_jobs
+      until: digitalocean_jobs.finished
+      retries: 300
+      loop: "{{ server.results }}"
+
+    # Mandatory configuration for Molecule to function.
+
+    - name: Populate instance config dict
+      set_fact:
+        instance_conf_dict: {
+          'instance': "{{ item.data.droplet.name }}",
+          'address': "{{ item.data.ip_address }}",
+          'user': "{{ ssh_user }}",
+          'port': "{{ ssh_port }}",
+          'identity_file': "{{ keypair_path }}",
+          'droplet_id': "{{ item.data.droplet.id }}",
+          'ssh_key_id': "{{ remote_keypair.data.ssh_key.id }}",
+        }
+      loop: "{{ digitalocean_jobs.results }}"
+      register: instance_config_dict
+      when: server.changed | bool
+
+    - name: Convert instance config dict to a list
+      set_fact:
+        instance_conf: "{{ instance_config_dict.results | map(attribute='ansible_facts.instance_conf_dict') | list }}"
+      when: server.changed | bool
+
+    - name: Dump instance config
+      copy:
+        content: "{{ instance_conf | to_json | from_json | molecule_to_yaml | molecule_header }}"
+        dest: "{{ molecule_instance_config }}"
+      when: server.changed | bool
+
+    - name: Wait for SSH
+      wait_for:
+        port: "{{ ssh_port }}"
+        host: "{{ item.address }}"
+        search_regex: SSH
+        delay: 10
+        timeout: 320
+      loop: "{{ lookup('file', molecule_instance_config) | molecule_from_yaml }}"

molecule/default/destroy.yml

@@ -0,0 +1,54 @@
+---
+- name: Destroy
+  hosts: localhost
+  connection: local
+  gather_facts: false
+  no_log: "{{ molecule_no_log }}"
+  tasks:
+    - block:
+        - name: Populate instance config
+          set_fact:
+            instance_conf: "{{ lookup('file', molecule_instance_config) | molecule_from_yaml }}"
+            skip_instances: false
+      rescue:
+        - name: Populate instance config when file missing
+          set_fact:
+            instance_conf: {}
+            skip_instances: true
+
+    - name: Destroy molecule instance(s)
+      digital_ocean_droplet:
+        name: "{{ item.instance }}"
+        id: "{{ item.droplet_id }}"
+        state: absent
+      register: server
+      loop: "{{ instance_conf | flatten(levels=1) }}"
+      when: not skip_instances
+      async: 7200
+      poll: 0
+
+    - name: Wait for instance(s) deletion to complete
+      async_status:
+        jid: "{{ item.ansible_job_id }}"
+      register: digitalocean_jobs
+      until: digitalocean_jobs.finished
+      retries: 300
+      loop: "{{ server.results }}"
+
+    - name: Delete remote keypair
+      digital_ocean_sshkey:
+        fingerprint: "{{ item.ssh_key_id }}"
+        state: absent
+      loop: "{{ instance_conf | flatten(levels=1) }}"
+
+    # Mandatory configuration for Molecule to function.
+
+    - name: Populate instance config
+      set_fact:
+        instance_conf: {}
+
+    - name: Dump instance config
+      copy:
+        content: "{{ instance_conf | molecule_to_yaml | molecule_header }}"
+        dest: "{{ molecule_instance_config }}"
+      when: server.changed | bool

molecule/default/molecule.yml

@@ -0,0 +1,24 @@
+---
+dependency:
+  name: galaxy
+driver:
+  name: digitalocean
+platforms:
+  - name: centos7-kernel
+    region_id: fra1
+    image_id: centos-7-x64
+    size_id: s-1vcpu-1gb
+lint:
+  name: yamllint
+  enabled: False
+provisioner:
+  name: ansible
+  lint:
+    name: ansible-lint
+    enabled: False
+verifier:
+  name: testinfra
+  lint:
+    name: flake8
+    options:
+      max-line-length: 120

molecule/default/playbook.yml

@@ -0,0 +1,8 @@
+---
+- name: Converge
+  hosts: all
+  vars:
+    kernel_coredump_enabled: False
+
+  roles:
+    - role: xoxys.kernel

molecule/default/prepare.yml

@@ -0,0 +1,9 @@
+---
+- name: Prepare
+  hosts: all
+  gather_facts: false
+  tasks:
+    - name: Install python for Ansible
+      raw: test -e /usr/bin/python || (apt -y update && apt install -y python-minimal)
+      become: true
+      changed_when: false

molecule/default/tests/test_default.py

@@ -0,0 +1,35 @@
+import os
+
+import testinfra.utils.ansible_runner
+
+import warnings
+warnings.filterwarnings("ignore", category=DeprecationWarning)
+
+testinfra_hosts = testinfra.utils.ansible_runner.AnsibleRunner(
+    os.environ['MOLECULE_INVENTORY_FILE']).get_hosts('all')
+
+
+def test_sysctl_file(host):
+    sysctl = host.file("/etc/sysctl.d/local.conf")
+
+    assert sysctl.exists
+    assert sysctl.user == "root"
+    assert sysctl.group == "root"
+    assert sysctl.mode == 0o644
+
+
+def test_modprobe_file(host):
+    modprobe = host.file("/etc/modprobe.d/custom.conf")
+
+    assert modprobe.exists
+    assert modprobe.user == "root"
+    assert modprobe.group == "root"
+    assert modprobe.mode == 0o644
+    assert modprobe.contains("install usb-storage /bin/true")
+    assert modprobe.contains("blacklist firewire-core")
+
+
+def test_coredump_config(host):
+    assert host.file("/etc/sysctl.d/dump.conf").exists
+    assert host.file("/etc/security/limits.d/dump.conf").exists
+    assert host.file("/etc/profile.d/dump.sh").exists

molecule/pytest.ini

@@ -0,0 +1,3 @@
+[pytest]
+filterwarnings =
+    ignore::DeprecationWarning

tasks/coredump.yml

@@ -0,0 +1,28 @@
+---
+- block:
+    - name: Disable core dump for setuid programs
+      template:
+        src: etc/sysctl.d/dump.conf.j2
+        dest: /etc/sysctl.d/dump.conf
+        owner: root
+        group: root
+        mode: 0644
+      notify: __kernel_reload
+
+    - name: Disable core dump for all users
+      template:
+        src: etc/security/limits.d/dump.conf.j2
+        dest: /etc/security/limits.d/dump.conf
+        owner: root
+        group: root
+        mode: 0644
+
+    - name: Disable core dump via soft limits
+      template:
+        src: etc/profile.d/dump.sh.j2
+        dest: /etc/profile.d/dump.sh
+        owner: root
+        group: root
+        mode: 0644
+  become: True
+  become_user: root

tasks/kernel.yml

@@ -0,0 +1,21 @@
+---
+- block:
+    - name: Set kernel hardening parameters
+      template:
+        src: etc/sysctl.d/local.conf.j2
+        dest: /etc/sysctl.d/local.conf
+        owner: root
+        group: root
+        mode: 0644
+      notify: __kernel_reload
+
+    - name: Deploy custom modprobe
+      template:
+        src: etc/modprobe.d/custom.conf.j2
+        dest: /etc/modprobe.d/custom.conf
+        owner: root
+        group: root
+        mode: 0644
+      notify: __kernel_reload
+  become: True
+  become_user: root

tasks/main.yml

@@ -0,0 +1,4 @@
+---
+- include_tasks: kernel.yml
+- include_tasks: coredump.yml
+  when: not kernel_coredump_enabled

templates/etc/modprobe.d/custom.conf.j2

@@ -0,0 +1,10 @@
+#jinja2: lstrip_blocks: True
+{{ ansible_managed | comment }}
+
+{% for module in kernel_disable_modules %}
+install {{ module }} /bin/true
+
+{% endfor %}
+{% for module in kernel_blacklist_modules %}
+blacklist {{ module }}
+{% endfor %}

templates/etc/profile.d/dump.sh.j2

@@ -0,0 +1,3 @@
+{{ ansible_managed | comment}}
+# Disable core dumps via soft limits for all users
+ulimit -S -c 0 > /dev/null 2>&1

templates/etc/security/limits.d/dump.conf.j2

@@ -0,0 +1,3 @@
+{{ ansible_managed | comment }}
+# Prevent core dumps for all users
+* hard core 0

templates/etc/sysctl.d/dump.conf.j2

@@ -0,0 +1,3 @@
+{{ ansible_managed | comment }}
+# disable core dumps for setuid programs
+fs.suid_dumpable = 0

templates/etc/sysctl.d/local.conf.j2

@@ -0,0 +1,71 @@
+#jinja2: lstrip_blocks: True
+{{ ansible_managed | comment }}
+# Buffer Overflow Protection
+kernel.exec-shield = 1
+kernel.randomize_va_space = 2
+
+# Restricting access to kernel pointers in the proc filesystem
+kernel.kptr_restrict = 1
+
+# Controls the System Request debugging functionality of the kernel
+kernel.sysrq = 0
+
+# Restrict unprivileged access to kernel syslog
+kernel.dmesg_restrict = 1
+
+# Restrict kernel address exposing
+kernel.kptr_restrict = 2
+
+# Limit scope for ptrace
+kernel.yama.ptrace_scope = 2
+
+# Avoid a smurf attack
+net.ipv4.icmp_echo_ignore_broadcasts = 1
+
+# Turn on protection for bad icmp error messages
+net.ipv4.icmp_ignore_bogus_error_responses = 1
+
+# Turn on syncookies for SYN flood attack protection
+net.ipv4.tcp_syncookies = 1
+
+# Turn on and log spoofed, source routed, and redirect packets
+net.ipv4.conf.all.log_martians = 1
+net.ipv4.conf.default.accept_source_route = 0
+
+# No source routed packets here
+net.ipv4.conf.all.accept_source_route = 0
+net.ipv4.conf.default.accept_source_route = 0
+
+# Turn on reverse path filtering
+net.ipv4.conf.all.rp_filter = 1
+net.ipv4.conf.default.rp_filter = 1
+
+# Make sure no one can alter the routing tables
+net.ipv4.conf.all.accept_redirects = 0
+net.ipv4.conf.default.accept_redirects = 0
+net.ipv4.conf.all.secure_redirects = 0
+net.ipv4.conf.default.secure_redirects = 0
+
+# Don't act as a router
+net.ipv4.ip_forward = 0
+net.ipv4.conf.all.send_redirects = 0
+net.ipv4.conf.default.send_redirects = 0
+
+# Make sure spoofed packets get logged
+net.ipv4.conf.all.log_martians = 1
+net.ipv4.conf.default.log_martians = 1
+
+# Turn off the tcp_timestamps
+net.ipv4.tcp_timestamps = 0
+
+# Disable IPv6 for all interfaces
+net.ipv6.conf.all.disable_ipv6 = 1
+net.ipv6.conf.default.disable_ipv6 = 1
+
+# Disable ICMP routing redirects
+net.ipv6.conf.all.accept_redirects = 0
+net.ipv6.conf.default.accept_redirects = 0
+
+{% if kernel_namespace_support_enabled %}
+user.max_user_namespaces = 15076
+{% endif %}