Fixes 1012854 by implementing file writing, adjusts

other code to have user/group parsing in util instead
of in stages.py, renames decomp_str to decomp_gzip since
it is more meaningful when named that (as thats all it can
decompress).

1 files changed, 69 insertions, 0 deletions

diff --git a/cloudinit/config/cc_write_files.py b/cloudinit/config/cc_write_files.py
new file mode 100644
index 00000000..683eac27
--- /dev/null
+++ b/cloudinit/config/cc_write_files.py
@@ -0,0 +1,69 @@
+# vi: ts=4 expandtab
+#
+#    Copyright (C) 2012 Yahoo! Inc.
+#
+#    Author: Joshua Harlow <harlowja@yahoo-inc.com>
+#
+#    This program is free software: you can redistribute it and/or modify
+#    it under the terms of the GNU General Public License version 3, as
+#    published by the Free Software Foundation.
+#
+#    This program 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 this program.  If not, see <http://www.gnu.org/licenses/>.
+
+import base64
+import os
+
+from cloudinit import util
+from cloudinit.settings import PER_INSTANCE
+
+frequency = PER_INSTANCE
+
+DEFAULT_PERMS = 0644
+
+
+def handle(name, cfg, _cloud, log, _args):
+    files = cfg.get('files')
+    if not files:
+        log.debug(("Skipping module named %s,"
+                   " no/empty 'files' key in configuration"), name)
+        return
+    write_files(name, files, log)
+
+
+def write_files(name, files, log):
+    if not files:
+        return
+
+    for (i, f_info) in enumerate(files):
+        path = f_info.get('path')
+        if not path:
+            log.warn("No path provided to write for entry %s in module %s",
+                     i + 1, name)
+            continue
+        path = os.path.abspath(path)
+        contents = decode_string(f_info.get('content', ''),
+                                 f_info.get('compression'))
+        (u, g) = util.extract_usergroup(f_info.get('owner'))
+        perms = safe_int(f_info.get('permissions'), DEFAULT_PERMS)
+        util.write_file(path, contents, mode=perms)
+        util.chownbyname(path, u, g)
+
+
+def safe_int(text, default):
+    try:
+        return int(text)
+    except (TypeError, ValueError):
+        return default
+
+
+def decode_string(contents, content_type):
+    if util.is_true(content_type, addons=['gzip', 'gz']):
+        contents_dec = base64.b64decode(contents)
+        contents = util.decomp_gzip(contents_dec, quiet=False)
+    return contents