Revert "Remove deployment extensions that are in morph"a

This reverts commit 21c5c335597e802f9a2f53f1a11d08514e69c506.

We still need these extensions to be able to work with the latests
changes in the morphs repository, using baserock-8 version of morph.

1 files changed, 112 insertions, 0 deletions

diff --git a/install-files.configure b/install-files.configure
new file mode 100755
index 00000000..669fc518
--- /dev/null
+++ b/install-files.configure
@@ -0,0 +1,112 @@
+#!/usr/bin/python
+# Copyright (C) 2013  Codethink Limited
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; version 2 of the License.
+#
+# 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, write to the Free Software Foundation, Inc.,
+# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+
+
+''' A Morph configuration extension for adding arbitrary files to a system
+
+It will read the manifest files specified in the environment variable
+INSTALL_FILES, then use the contens of those files to determine which files
+to install into the target system.
+
+'''
+
+import cliapp
+import os
+import re
+import sys
+import shlex
+import shutil
+import stat
+
+class InstallFilesConfigureExtension(cliapp.Application):
+
+    '''Install the files specified in the manifests listed in INSTALL_FILES
+
+    The manifest is formatted as:
+
+        <octal mode> <uid decimal> <gid decimal> <filename>
+
+    Where the filename is how the file is found inside whatever directory
+    the manifest is stored in, and also the path within the system to
+    install to.
+
+    Directories on the target must be created if they do not exist.
+    
+    This extension supports files, symlinks and directories.
+
+    '''
+
+    def process_args(self, args):
+        if not 'INSTALL_FILES' in os.environ:
+            return
+        target_root = args[0]
+        manifests = shlex.split(os.environ['INSTALL_FILES'])
+        for manifest in manifests:
+            self.install_manifest(manifest, target_root)
+
+    def install_manifest(self, manifest, target_root):
+        manifest_dir = os.path.dirname(manifest)
+        with open(manifest) as f:
+            entries = f.readlines()
+            for entry in entries:
+                self.install_entry(entry, manifest_dir, target_root)
+
+    def install_entry(self, entry, manifest_root, target_root):
+        entry_data = re.split('\W+', entry.strip(), maxsplit=3)
+        mode = int(entry_data[0], 8)
+        uid = int(entry_data[1])
+        gid = int(entry_data[2])
+        path = entry_data[3]
+        dest_path = os.path.join(target_root, './' + path)
+        if stat.S_ISDIR(mode):
+            if os.path.exists(dest_path):
+                dest_stat = os.stat(dest_path)
+                if (mode != dest_stat.st_mode
+                    or uid != dest_stat.st_uid
+                    or gid != dest_stat.st_gid):
+                        raise cliapp.AppException('"%s" exists and is not '
+                                                  'identical to directory '
+                                                  '"%s"' % (dest_path, entry))
+            else:
+                os.mkdir(dest_path, mode)
+                os.chown(dest_path, uid, gid)
+                os.chmod(dest_path, mode)
+
+        elif stat.S_ISLNK(mode):
+            if os.path.lexists(dest_path):
+                raise cliapp.AppException('Symlink already exists at %s'
+                                          % dest_path)
+            else:
+                linkdest = os.readlink(os.path.join(manifest_root,
+                                                    './' + path))
+                os.symlink(linkdest, dest_path)
+                os.lchown(dest_path, uid, gid)
+
+        elif stat.S_ISREG(mode):
+            if os.path.lexists(dest_path):
+                raise cliapp.AppException('File already exists at %s'
+                                           % dest_path)
+            else:
+                shutil.copyfile(os.path.join(manifest_root, './' + path),
+                                dest_path)
+                os.chown(dest_path, uid, gid)
+                os.chmod(dest_path, mode)
+
+        else:
+            raise cliapp.AppException('Mode given in "%s" is not a file,'
+                                      ' symlink or directory' % entry)
+
+InstallFilesConfigureExtension().run()