561 lines
22 KiB
Python
561 lines
22 KiB
Python
#!/usr/bin/python
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# -*- coding: utf-8 -*-
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# Copyright (c) 2014, Chris Schmidt <chris.schmidt () contrastsecurity.com>
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#
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# Built using https://github.com/hamnis/useful-scripts/blob/master/python/download-maven-artifact
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# as a reference and starting point.
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#
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# GNU General Public License v3.0+ (see COPYING or https://www.gnu.org/licenses/gpl-3.0.txt)
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from __future__ import absolute_import, division, print_function
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__metaclass__ = type
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ANSIBLE_METADATA = {'metadata_version': '1.1',
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'status': ['preview'],
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'supported_by': 'community'}
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DOCUMENTATION = '''
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---
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module: maven_artifact
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short_description: Downloads an Artifact from a Maven Repository
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version_added: "2.0"
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description:
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- Downloads an artifact from a maven repository given the maven coordinates provided to the module.
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- Can retrieve snapshots or release versions of the artifact and will resolve the latest available
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version if one is not available.
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author: "Chris Schmidt (@chrisisbeef)"
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requirements:
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- lxml
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- boto if using a S3 repository (s3://...)
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options:
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group_id:
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description:
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- The Maven groupId coordinate
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required: true
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artifact_id:
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description:
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- The maven artifactId coordinate
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required: true
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version:
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description:
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- The maven version coordinate
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default: latest
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classifier:
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description:
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- The maven classifier coordinate
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extension:
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description:
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- The maven type/extension coordinate
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default: jar
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repository_url:
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description:
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- The URL of the Maven Repository to download from.
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- Use s3://... if the repository is hosted on Amazon S3, added in version 2.2.
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- Use file://... if the repository is local, added in version 2.6
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default: http://repo1.maven.org/maven2
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username:
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description:
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- The username to authenticate as to the Maven Repository. Use AWS secret key of the repository is hosted on S3
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aliases: [ "aws_secret_key" ]
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password:
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description:
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- The password to authenticate with to the Maven Repository. Use AWS secret access key of the repository is hosted on S3
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aliases: [ "aws_secret_access_key" ]
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dest:
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description:
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- The path where the artifact should be written to
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- If file mode or ownerships are specified and destination path already exists, they affect the downloaded file
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required: true
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state:
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description:
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- The desired state of the artifact
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default: present
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choices: [present,absent]
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timeout:
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description:
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- Specifies a timeout in seconds for the connection attempt
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default: 10
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version_added: "2.3"
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validate_certs:
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description:
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- If C(no), SSL certificates will not be validated. This should only be set to C(no) when no other option exists.
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type: bool
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default: 'yes'
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version_added: "1.9.3"
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keep_name:
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description:
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- If C(yes), the downloaded artifact's name is preserved, i.e the version number remains part of it.
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- This option only has effect when C(dest) is a directory and C(version) is set to C(latest).
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type: bool
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default: 'no'
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version_added: "2.4"
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verify_checksum:
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description:
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- If C(never), the md5 checksum will never be downloaded and verified.
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- If C(download), the md5 checksum will be downloaded and verified only after artifact download. This is the default.
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- If C(change), the md5 checksum will be downloaded and verified if the destination already exist,
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to verify if they are identical. This was the behaviour before 2.6. Since it downloads the md5 before (maybe)
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downloading the artifact, and since some repository software, when acting as a proxy/cache, return a 404 error
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if the artifact has not been cached yet, it may fail unexpectedly.
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If you still need it, you should consider using C(always) instead - if you deal with a checksum, it is better to
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use it to verify integrity after download.
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- C(always) combines C(download) and C(change).
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required: false
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default: 'download'
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choices: ['never', 'download', 'change', 'always']
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version_added: "2.6"
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extends_documentation_fragment:
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- files
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'''
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EXAMPLES = '''
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# Download the latest version of the JUnit framework artifact from Maven Central
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- maven_artifact:
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group_id: junit
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artifact_id: junit
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dest: /tmp/junit-latest.jar
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# Download JUnit 4.11 from Maven Central
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- maven_artifact:
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group_id: junit
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artifact_id: junit
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version: 4.11
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dest: /tmp/junit-4.11.jar
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# Download an artifact from a private repository requiring authentication
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- maven_artifact:
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group_id: com.company
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artifact_id: library-name
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repository_url: 'https://repo.company.com/maven'
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username: user
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password: pass
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dest: /tmp/library-name-latest.jar
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# Download a WAR File to the Tomcat webapps directory to be deployed
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- maven_artifact:
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group_id: com.company
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artifact_id: web-app
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extension: war
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repository_url: 'https://repo.company.com/maven'
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dest: /var/lib/tomcat7/webapps/web-app.war
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# Keep a downloaded artifact's name, i.e. retain the version
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- maven_artifact:
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version: latest
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artifact_id: spring-core
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group_id: org.springframework
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dest: /tmp/
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keep_name: yes
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# Download the latest version of the JUnit framework artifact from Maven local
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- maven_artifact:
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group_id: junit
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artifact_id: junit
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dest: /tmp/junit-latest.jar
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repository_url: "file://{{ lookup('env','HOME') }}/.m2/repository"
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'''
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import hashlib
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import os
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import posixpath
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import sys
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import shutil
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import io
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try:
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from lxml import etree
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HAS_LXML_ETREE = True
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except ImportError:
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HAS_LXML_ETREE = False
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try:
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import boto3
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HAS_BOTO = True
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except ImportError:
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HAS_BOTO = False
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from ansible.module_utils.basic import AnsibleModule
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from ansible.module_utils.six.moves.urllib.parse import urlparse
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from ansible.module_utils.urls import fetch_url
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from ansible.module_utils._text import to_bytes, to_native, to_text
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def split_pre_existing_dir(dirname):
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'''
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Return the first pre-existing directory and a list of the new directories that will be created.
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'''
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head, tail = os.path.split(dirname)
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b_head = to_bytes(head, errors='surrogate_or_strict')
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if not os.path.exists(b_head):
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(pre_existing_dir, new_directory_list) = split_pre_existing_dir(head)
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else:
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return head, [tail]
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new_directory_list.append(tail)
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return pre_existing_dir, new_directory_list
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def adjust_recursive_directory_permissions(pre_existing_dir, new_directory_list, module, directory_args, changed):
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'''
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Walk the new directories list and make sure that permissions are as we would expect
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'''
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if new_directory_list:
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working_dir = os.path.join(pre_existing_dir, new_directory_list.pop(0))
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directory_args['path'] = working_dir
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changed = module.set_fs_attributes_if_different(directory_args, changed)
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changed = adjust_recursive_directory_permissions(working_dir, new_directory_list, module, directory_args, changed)
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return changed
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class Artifact(object):
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def __init__(self, group_id, artifact_id, version, classifier='', extension='jar'):
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if not group_id:
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raise ValueError("group_id must be set")
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if not artifact_id:
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raise ValueError("artifact_id must be set")
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self.group_id = group_id
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self.artifact_id = artifact_id
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self.version = version
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self.classifier = classifier
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if not extension:
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self.extension = "jar"
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else:
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self.extension = extension
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def is_snapshot(self):
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return self.version and self.version.endswith("SNAPSHOT")
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def path(self, with_version=True):
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base = posixpath.join(self.group_id.replace(".", "/"), self.artifact_id)
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if with_version and self.version:
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base = posixpath.join(base, self.version)
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return base
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def _generate_filename(self):
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filename = self.artifact_id + "-" + self.classifier + "." + self.extension
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if not self.classifier:
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filename = self.artifact_id + "." + self.extension
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return filename
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def get_filename(self, filename=None):
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if not filename:
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filename = self._generate_filename()
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elif os.path.isdir(filename):
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filename = os.path.join(filename, self._generate_filename())
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return filename
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def __str__(self):
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result = "%s:%s:%s" % (self.group_id, self.artifact_id, self.version)
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if self.classifier:
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result = "%s:%s:%s:%s:%s" % (self.group_id, self.artifact_id, self.extension, self.classifier, self.version)
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elif self.extension != "jar":
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result = "%s:%s:%s:%s" % (self.group_id, self.artifact_id, self.extension, self.version)
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return result
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@staticmethod
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def parse(input):
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parts = input.split(":")
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if len(parts) >= 3:
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g = parts[0]
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a = parts[1]
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v = parts[len(parts) - 1]
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t = None
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c = None
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if len(parts) == 4:
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t = parts[2]
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if len(parts) == 5:
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t = parts[2]
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c = parts[3]
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return Artifact(g, a, v, c, t)
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else:
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return None
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class MavenDownloader:
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def __init__(self, module, base="http://repo1.maven.org/maven2", local=False):
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self.module = module
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if base.endswith("/"):
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base = base.rstrip("/")
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self.base = base
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self.local = local
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self.user_agent = "Maven Artifact Downloader/1.0"
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self.latest_version_found = None
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self.metadata_file_name = "maven-metadata-local.xml" if local else "maven-metadata.xml"
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def find_latest_version_available(self, artifact):
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if self.latest_version_found:
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return self.latest_version_found
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path = "/%s/%s" % (artifact.path(False), self.metadata_file_name)
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content = self._getContent(self.base + path, "Failed to retrieve the maven metadata file: " + path)
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xml = etree.fromstring(content)
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v = xml.xpath("/metadata/versioning/versions/version[last()]/text()")
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if v:
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self.latest_version_found = v[0]
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return v[0]
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def find_uri_for_artifact(self, artifact):
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if artifact.version == "latest":
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artifact.version = self.find_latest_version_available(artifact)
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if artifact.is_snapshot():
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if self.local:
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return self._uri_for_artifact(artifact, artifact.version)
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path = "/%s/%s" % (artifact.path(), self.metadata_file_name)
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content = self._getContent(self.base + path, "Failed to retrieve the maven metadata file: " + path)
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xml = etree.fromstring(content)
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for snapshotArtifact in xml.xpath("/metadata/versioning/snapshotVersions/snapshotVersion"):
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classifier = snapshotArtifact.xpath("classifier/text()")
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artifact_classifier = classifier[0] if classifier else ''
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extension = snapshotArtifact.xpath("extension/text()")
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artifact_extension = extension[0] if extension else ''
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if artifact_classifier == artifact.classifier and artifact_extension == artifact.extension:
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return self._uri_for_artifact(artifact, snapshotArtifact.xpath("value/text()")[0])
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timestamp_xmlpath = xml.xpath("/metadata/versioning/snapshot/timestamp/text()")
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if timestamp_xmlpath:
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timestamp = timestamp_xmlpath[0]
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build_number = xml.xpath("/metadata/versioning/snapshot/buildNumber/text()")[0]
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return self._uri_for_artifact(artifact, artifact.version.replace("SNAPSHOT", timestamp + "-" + build_number))
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return self._uri_for_artifact(artifact, artifact.version)
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def _uri_for_artifact(self, artifact, version=None):
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if artifact.is_snapshot() and not version:
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raise ValueError("Expected uniqueversion for snapshot artifact " + str(artifact))
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elif not artifact.is_snapshot():
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version = artifact.version
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if artifact.classifier:
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return posixpath.join(self.base, artifact.path(), artifact.artifact_id + "-" + version + "-" + artifact.classifier + "." + artifact.extension)
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return posixpath.join(self.base, artifact.path(), artifact.artifact_id + "-" + version + "." + artifact.extension)
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# for small files, directly get the full content
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def _getContent(self, url, failmsg, force=True):
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if self.local:
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parsed_url = urlparse(url)
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if os.path.isfile(parsed_url.path):
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with io.open(parsed_url.path, 'rb') as f:
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return f.read()
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if force:
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raise ValueError(failmsg + " because can not find file: " + url)
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return None
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response = self._request(url, failmsg, force)
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if response:
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return response.read()
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return None
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# only for HTTP request
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def _request(self, url, failmsg, force=True):
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url_to_use = url
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parsed_url = urlparse(url)
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if parsed_url.scheme == 's3':
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parsed_url = urlparse(url)
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bucket_name = parsed_url.netloc
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key_name = parsed_url.path[1:]
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client = boto3.client('s3', aws_access_key_id=self.module.params.get('username', ''), aws_secret_access_key=self.module.params.get('password', ''))
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url_to_use = client.generate_presigned_url('get_object', Params={'Bucket': bucket_name, 'Key': key_name}, ExpiresIn=10)
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req_timeout = self.module.params.get('timeout')
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# Hack to add parameters in the way that fetch_url expects
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self.module.params['url_username'] = self.module.params.get('username', '')
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self.module.params['url_password'] = self.module.params.get('password', '')
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self.module.params['http_agent'] = self.module.params.get('user_agent', None)
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response, info = fetch_url(self.module, url_to_use, timeout=req_timeout)
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if info['status'] == 200:
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return response
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if force:
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raise ValueError(failmsg + " because of " + info['msg'] + "for URL " + url_to_use)
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return None
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def download(self, artifact, verify_download, filename=None):
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filename = artifact.get_filename(filename)
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if not artifact.version or artifact.version == "latest":
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artifact = Artifact(artifact.group_id, artifact.artifact_id, self.find_latest_version_available(artifact),
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artifact.classifier, artifact.extension)
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url = self.find_uri_for_artifact(artifact)
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if self.local:
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parsed_url = urlparse(url)
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if os.path.isfile(parsed_url.path):
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shutil.copy2(parsed_url.path, filename)
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else:
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return "Can not find local file: " + parsed_url.path
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else:
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response = self._request(url, "Failed to download artifact " + str(artifact))
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with io.open(filename, 'wb') as f:
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self._write_chunks(response, f, report_hook=self.chunk_report)
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if verify_download:
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invalid_md5 = self.is_invalid_md5(filename, url)
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if invalid_md5:
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# if verify_change was set, the previous file would be deleted
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os.remove(filename)
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return invalid_md5
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return None
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def chunk_report(self, bytes_so_far, chunk_size, total_size):
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percent = float(bytes_so_far) / total_size
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percent = round(percent * 100, 2)
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sys.stdout.write("Downloaded %d of %d bytes (%0.2f%%)\r" %
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(bytes_so_far, total_size, percent))
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if bytes_so_far >= total_size:
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sys.stdout.write('\n')
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def _write_chunks(self, response, filehandle, chunk_size=8192, report_hook=None):
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total_size = response.info().get('Content-Length').strip()
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total_size = int(total_size)
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bytes_so_far = 0
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while True:
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chunk = response.read(chunk_size)
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bytes_so_far += len(chunk)
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if not chunk:
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break
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filehandle.write(chunk)
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if report_hook:
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report_hook(bytes_so_far, chunk_size, total_size)
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return bytes_so_far
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def is_invalid_md5(self, file, remote_url):
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if os.path.exists(file):
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local_md5 = self._local_md5(file)
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if self.local:
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parsed_url = urlparse(remote_url)
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remote_md5 = self._local_md5(parsed_url.path)
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else:
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try:
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remote_md5 = to_text(self._getContent(remote_url + '.md5', "Failed to retrieve MD5", False), errors='strict')
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except UnicodeError as e:
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return "Cannot retrieve a valid md5 from %s: %s" % (remote_url, to_native(e))
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if(not remote_md5):
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return "Cannot find md5 from " + remote_url
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if local_md5 == remote_md5:
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return None
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else:
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return "Checksum does not match: we computed " + local_md5 + "but the repository states " + remote_md5
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return "Path does not exist: " + file
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def _local_md5(self, file):
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md5 = hashlib.md5()
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with io.open(file, 'rb') as f:
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for chunk in iter(lambda: f.read(8192), b''):
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md5.update(chunk)
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return md5.hexdigest()
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def main():
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module = AnsibleModule(
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argument_spec=dict(
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group_id=dict(default=None),
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artifact_id=dict(default=None),
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version=dict(default="latest"),
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classifier=dict(default=''),
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extension=dict(default='jar'),
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repository_url=dict(default=None),
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username=dict(default=None, aliases=['aws_secret_key']),
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password=dict(default=None, no_log=True, aliases=['aws_secret_access_key']),
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state=dict(default="present", choices=["present", "absent"]), # TODO - Implement a "latest" state
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timeout=dict(default=10, type='int'),
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dest=dict(type="path", default=None),
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validate_certs=dict(required=False, default=True, type='bool'),
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keep_name=dict(required=False, default=False, type='bool'),
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verify_checksum=dict(required=False, default='download', choices=['never', 'download', 'change', 'always'])
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),
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add_file_common_args=True
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)
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if not HAS_LXML_ETREE:
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module.fail_json(msg='module requires the lxml python library installed on the managed machine')
|
|
|
|
repository_url = module.params["repository_url"]
|
|
if not repository_url:
|
|
repository_url = "http://repo1.maven.org/maven2"
|
|
try:
|
|
parsed_url = urlparse(repository_url)
|
|
except AttributeError as e:
|
|
module.fail_json(msg='url parsing went wrong %s' % e)
|
|
|
|
local = parsed_url.scheme == "file"
|
|
|
|
if parsed_url.scheme == 's3' and not HAS_BOTO:
|
|
module.fail_json(msg='boto3 required for this module, when using s3:// repository URLs')
|
|
|
|
group_id = module.params["group_id"]
|
|
artifact_id = module.params["artifact_id"]
|
|
version = module.params["version"]
|
|
classifier = module.params["classifier"]
|
|
extension = module.params["extension"]
|
|
state = module.params["state"]
|
|
dest = module.params["dest"]
|
|
b_dest = to_bytes(dest, errors='surrogate_or_strict')
|
|
keep_name = module.params["keep_name"]
|
|
verify_checksum = module.params["verify_checksum"]
|
|
verify_download = verify_checksum in ['download', 'always']
|
|
verify_change = verify_checksum in ['change', 'always']
|
|
|
|
downloader = MavenDownloader(module, repository_url, local)
|
|
|
|
try:
|
|
artifact = Artifact(group_id, artifact_id, version, classifier, extension)
|
|
except ValueError as e:
|
|
module.fail_json(msg=e.args[0])
|
|
|
|
changed = False
|
|
prev_state = "absent"
|
|
|
|
if dest.endswith(os.sep):
|
|
b_dest = to_bytes(dest, errors='surrogate_or_strict')
|
|
if not os.path.exists(b_dest):
|
|
(pre_existing_dir, new_directory_list) = split_pre_existing_dir(dest)
|
|
os.makedirs(b_dest)
|
|
directory_args = module.load_file_common_arguments(module.params)
|
|
directory_mode = module.params["directory_mode"]
|
|
if directory_mode is not None:
|
|
directory_args['mode'] = directory_mode
|
|
else:
|
|
directory_args['mode'] = None
|
|
changed = adjust_recursive_directory_permissions(pre_existing_dir, new_directory_list, module, directory_args, changed)
|
|
|
|
if os.path.isdir(b_dest):
|
|
version_part = version
|
|
if keep_name and version == 'latest':
|
|
version_part = downloader.find_latest_version_available(artifact)
|
|
|
|
if classifier:
|
|
dest = posixpath.join(dest, "%s-%s-%s.%s" % (artifact_id, version_part, classifier, extension))
|
|
else:
|
|
dest = posixpath.join(dest, "%s-%s.%s" % (artifact_id, version_part, extension))
|
|
b_dest = to_bytes(dest, errors='surrogate_or_strict')
|
|
|
|
if os.path.lexists(b_dest) and ((not verify_change) or not downloader.is_invalid_md5(dest, downloader.find_uri_for_artifact(artifact))):
|
|
prev_state = "present"
|
|
|
|
if prev_state == "absent":
|
|
try:
|
|
download_error = downloader.download(artifact, verify_download, b_dest)
|
|
if download_error is None:
|
|
changed = True
|
|
else:
|
|
module.fail_json(msg="Cannot retrieve the artifact to destination: " + download_error)
|
|
except ValueError as e:
|
|
module.fail_json(msg=e.args[0])
|
|
|
|
module.params['dest'] = dest
|
|
file_args = module.load_file_common_arguments(module.params)
|
|
changed = module.set_fs_attributes_if_different(file_args, changed)
|
|
if changed:
|
|
module.exit_json(state=state, dest=dest, group_id=group_id, artifact_id=artifact_id, version=version, classifier=classifier,
|
|
extension=extension, repository_url=repository_url, changed=changed)
|
|
else:
|
|
module.exit_json(state=state, dest=dest, changed=changed)
|
|
|
|
|
|
if __name__ == '__main__':
|
|
main()
|