1 files changed, 80 insertions, 0 deletions
diff --git a/ansible/library/fetch_url_and_verify.py b/ansible/library/fetch_url_and_verify.py
new file mode 100644
index 000000000..6c5c0a8c2
--- /dev/null
+++ b/ansible/library/fetch_url_and_verify.py
@@ -0,0 +1,80 @@
+#!/usr/bin/env python
+# Copyright (c) 2017 Intel Corporation
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+DOCUMENTATION = '''
+---
+module: fetch_url_and_verify
+short_description: Fetch image and verify against a SHA256SUM URL
+description:
+    - Download a URL and check it against a remote SHA256SUMS file
+options:
+  url: Image URL
+  image_dest: Image filename
+  sha256_url: SHA256SUMS URL
+  dest: python file mode (w, wb, a, ab)
+  retries: fetch retries
+'''
+
+
+def main():
+    module = AnsibleModule(
+        argument_spec={
+            'url': {'required': True, 'type': 'str'},
+            'sha256url': {'required': True, 'type': 'str'},
+            'dest': {'required': True, 'type': 'path'},
+            'retries': {'required': False, 'type': 'int', 'default': 3},
+        }
+    )
+    params = module.params
+    url = params['url']
+    dest = params['dest']
+    sha256url = params['sha256url']
+    retries = params['retries']
+
+    image_dir, image_filename = os.path.split(dest)
+    rc, stdout, stderr = module.run_command(['curl', '-sS', sha256url])
+    if rc == 0 and stdout:
+        sha256line = next(
+            (l for l in stdout.splitlines() if image_filename in l), "")
+    if not sha256line:
+        module.fail_json(
+            msg="Unable to find SHA256SUMS line for file {}".format(
+                image_filename))
+    rc = \
+    module.run_command(['sha256sum', '-c'], data=sha256line, cwd=image_dir)[0]
+    if rc == 0:
+        sha256sum = sha256line.split()[0]
+        module.exit_json(changed=False, dest=dest, url=url,
+                         sha256sum=sha256sum)
+
+    for retry in range(retries):
+        curl_rc, stdout, stderr = module.run_command(
+            ['curl', '-sS', '-o', dest, url], cwd=image_dir)
+        if curl_rc == 0:
+            sha256_rc, stdout, stderr = module.run_command(['sha256sum', '-c'],
+                                                           data=sha256line,
+                                                           cwd=image_dir)
+            if sha256_rc == 0:
+                module.exit_json(changed=True)
+
+    module.fail_json(msg="Unable to download {}".format(url), stdout=stdout,
+                     stderr=stderr)
+
+
+# <<INCLUDE_ANSIBLE_MODULE_COMMON>>
+from ansible.module_utils.basic import *  # noqa
+
+if __name__ == '__main__':
+    main()