Initial commit

LICENSE

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+MIT License
+
+Copyright (c) 2021 Matthew Howle
+
+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

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+# plugin-system-updates
+
+Collect system updates

system_updates.py

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+from __future__ import absolute_import, division, print_function
+__metaclass__ = type
+
+DOCUMENTATION = r'''
+---
+module: system_updates
+short_description: Collect system updates as ansible_facts
+description:
+    - Collects system updates from APT or Yum
+'''
+
+from ansible.module_utils.basic import AnsibleModule
+
+HAVE_PYTHON_APT = False
+HAVE_PYTHON_YUM = False
+
+try:
+    import apt
+    import apt_pkg
+    HAVE_PYTHON_APT = True
+except ImportError:
+    pass
+
+try:
+    import yum
+    from yum.logginglevels import __NO_LOGGING
+    HAVE_PYTHON_YUM = True
+except ImportError:
+    pass
+
+
+def get_updates_apt():
+    """Collect upgrades from APT"""
+
+    def is_critical_package(version):
+        for origin in version.origins:
+            if 'security' in origin.site.lower():
+                return True
+            if 'security' in origin.label.lower():
+                return True
+        return False
+
+    cache = apt.Cache(progress=None)
+    updated_packages = []
+
+    for pkg in cache:
+        for ver in pkg.versions:
+            if not ver.is_installed:
+                continue
+
+            candidate_ver = pkg.candidate
+            if pkg.is_upgradable:
+                updated_packages.append(dict(
+                    name=pkg.name,
+                    version=candidate_ver.version,
+                    arch=candidate_ver.architecture,
+                    category=candidate_ver.section,
+                    origin=candidate_ver.origins[0].origin,
+                    installed_version=ver.version,
+                    critical=is_critical_package(candidate_ver),
+                    description=ver.summary
+                ))
+    return updated_packages
+
+
+def get_updates_yum():
+    """Collect upgrades from Yum"""
+
+    def get_installed_version(package_name, arch=None):
+        search_results = yb.rpmdb.searchNevra(name=package_name, arch=arch)
+        return search_results[0].version if search_results else None
+
+    def is_critical_update(metadata):
+        for ref in metadata['references']:
+            if ref['type'].lower() in ('cve', 'security'):
+                return True
+            if 'CVE' in ref['title']:
+                return True
+        return False
+
+    # Make yum quiet
+    import logging
+    # grep -EIohr "getLogger\([^)]+\)" /usr/lib/python2.7/site-packages/yum/
+    loggers = ['yum', 'yum.Depsolve', 'yum.filelogging', 'yum.filelogging.RPMInstallCallback',
+               'yum.filelogging.YumBase', 'yum.plugin', 'yum.Repos', 'yum.ReposStorage', 'yum.update_md', 'yum.verbose',
+               'yum.verbose.Depsolve', 'yum.verbose.plugin', 'yum.ProcessTrasactionBaseCallback', 'yum.verbose.Repos',
+               'yum.verbose.update_md', 'yum.verbose.YumBase', 'yum.verbose.YumPlugins', 'yum.YumBase']
+
+    for name in loggers:
+        logger = logging.getLogger(name)
+        logger.setLevel(__NO_LOGGING)
+
+    yb = yum.YumBase()
+    yb.setCacheDir()
+
+    pkglist = yb.doPackageLists(pkgnarrow='updates')
+
+    umd = yum.update_md.UpdateMetadata()
+
+    repos = []
+    for update in pkglist.updates:
+        if update.repo not in repos:
+            repos.append(update.repo)
+            try:
+                umd.add(update.repo)
+            except yum.Errors.RepoMDError:
+                pass
+
+    updated_packages = []
+    for update in pkglist.updates:
+        critical_update = False
+        notice = umd.get_notice((update.name, update.ver, update.rel))
+        if notice:
+            metadata = notice.get_metadata()
+            critical_update = is_critical_update(metadata)
+
+        candidate = dict(
+            name=update.name,
+            version=update.version,
+            release=update.release,
+            epoch=update.epoch,
+            arch=update.arch,
+            installed_version=get_installed_version(update.name, update.arch),
+            critical=critical_update,
+            description=update.description
+        )
+        updated_packages.append(candidate)
+
+    return updated_packages
+
+
+def get_updates():
+    if HAVE_PYTHON_APT:
+        return get_updates_apt()
+    if HAVE_PYTHON_YUM:
+        return get_updates_yum()
+    return None
+
+
+def main():
+    module = AnsibleModule(argument_spec=dict(),
+                           supports_check_mode=True)
+
+    results = dict()
+    facts = dict()
+    updates = get_updates()
+
+    if updates is None:
+        results['skipped'] = True
+        results['msg'] = 'WARNING: Could not obtain updates'
+    else:
+        facts = updates
+
+    results['changed'] = False
+    results['ansible_facts'] = {'system_updates': facts }
+
+    module.exit_json(**results)
+
+
+if __name__ == '__main__':
+    main()