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slords |
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#!/usr/bin/env python |
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import sys |
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import os |
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import re |
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import shutil |
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import getopt |
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from stat import * |
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#------------------------------------------------------------------------------ |
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# Command Line Args |
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doit = True |
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verbose = False |
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quiet = False |
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warn = False |
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force = False |
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print_mapping = False |
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remove_files = False |
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remove_installation = False |
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# Scan Results |
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existing_files = {} |
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non_existing_files = {} |
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# Directory and File mappings |
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# This is the complete directory map, it includes both data files |
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# and run-time files |
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dir_map = { |
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'/var/mailman' : '/var/lib/mailman', |
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'/var/mailman/Mailman' : '/usr/lib/mailman/Mailman', |
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'/var/mailman/archives' : '/var/lib/mailman/archives', |
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'/var/mailman/bin' : '/usr/lib/mailman/bin', |
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'/var/mailman/cgi-bin' : '/usr/lib/mailman/cgi-bin', |
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'/var/mailman/cron' : '/usr/lib/mailman/cron', |
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'/var/mailman/data' : '/var/lib/mailman/data', |
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'/var/mailman/lists' : '/var/lib/mailman/lists', |
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'/var/mailman/locks' : '/var/lock/mailman', |
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'/var/mailman/logs' : '/var/log/mailman', |
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'/var/mailman/mail' : '/usr/lib/mailman/mail', |
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'/var/mailman/messages' : '/usr/lib/mailman/messages', |
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'/var/mailman/pythonlib' : '/usr/lib/mailman/pythonlib', |
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'/var/mailman/qfiles' : '/var/spool/mailman', |
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'/var/spool/mailman/qfiles' : '/var/spool/mailman', |
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'/var/mailman/scripts' : '/usr/lib/mailman/scripts', |
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'/var/mailman/spam' : '/var/lib/mailman/spam', |
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'/var/mailman/templates' : '/usr/lib/mailman/templates', |
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'/var/mailman/tests' : '/usr/lib/mailman/tests' |
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} |
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# These are directories that contain data files the user may |
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# want to preserve from an old installation and should be copied |
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# into the new directory location. |
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data_dir_map = { |
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'/var/mailman/archives' : '/var/lib/mailman/archives', |
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'/var/mailman/data' : '/var/lib/mailman/data', |
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'/var/mailman/lists' : '/var/lib/mailman/lists', |
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'/var/mailman/logs' : '/var/log/mailman', |
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'/var/mailman/qfiles' : '/var/spool/mailman', |
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'/var/spool/mailman/qfiles' : '/var/spool/mailman', |
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'/var/mailman/spam' : '/var/lib/mailman/spam', |
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} |
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# These are mappings for individual files. They represent files that |
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# cannot be mapped via their parent dirctories, they must be treated |
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# individually. |
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file_map = { |
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'/var/mailman/data/adm.pw' : '/etc/mailman/adm.pw', |
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'/var/mailman/data/creator.pw' : '/etc/mailman/creator.pw', |
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'/var/mailman/data/aliases' : '/etc/mailman/aliases', |
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'/var/mailman/data/virtual-mailman' : '/etc/mailman/virtual-mailman', |
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'/var/mailman/data/sitelist.cfg' : '/etc/mailman/sitelist.cfg', |
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'/var/mailman/data/master-qrunner.pid' : '/var/run/mailman/master-qrunner.pid' |
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} |
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#------------------------------------------------------------------------------ |
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def DumpMapping(): |
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'''Print out the directory and file mappings''' |
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print "Directory Mapping:" |
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for key in dir_map.keys(): |
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print "%s --> %s" %(key, dir_map[key]) |
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print "\nFile Mapping:" |
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for key in file_map.keys(): |
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print "%s --> %s" %(key, file_map[key]) |
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def RecordFile(src, dst): |
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'''If the src files (old) exists record this as a potential |
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file operation. File operations are grouped into two sets, |
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those where the dst (new) files exists and those where it does not |
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exist. This is done to prevent overwriting files''' |
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global existing_files, non_existing_files |
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if not os.path.exists(src): |
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return |
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if existing_files.has_key(src): |
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if warn: |
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print "WARNING: src file already seen (%s) and has dst match: (%s)" % (src, dst) |
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return |
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if non_existing_files.has_key(src): |
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if warn: |
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print "WARNING: src file already seen (%s) does not have dst match" % (src) |
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return |
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if os.path.exists(dst): |
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existing_files[src] = dst |
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else: |
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non_existing_files[src] = dst |
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def GetCopyFiles(old_root, new_root): |
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'''Recursively generate a list of src files (old) in the old_root |
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and pair each of them with their new dst path name''' |
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prefix_re = re.compile("^(%s)/*(.*)" % re.escape(old_root)) |
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dst_files_existing = [] |
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dst_files_non_existing = [] |
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for root, dirs, files in os.walk(old_root): |
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match = prefix_re.match(root) |
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subdir = match.group(2) |
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for name in files: |
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oldpath = os.path.join(root, name) |
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newpath = os.path.join(new_root, subdir, name) |
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RecordFile(oldpath, newpath) |
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def CopyFile(src_path, dst_path): |
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'''Copy file, preserve its mode and ownership. If the dst directory |
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does not exist, create it preserving the mode and ownership of the |
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src direcotry''' |
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if not doit: |
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print "cp %s %s" % (src_path, dst_path) |
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return |
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src_dir = os.path.dirname(src_path) |
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dst_dir = os.path.dirname(dst_path) |
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if not os.path.isdir(dst_dir): |
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if os.path.exists(dst_dir): |
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print "ERROR: dst dir exists, but is not directory (%s)" % dst_dir |
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return |
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st = os.stat(src_dir) |
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os.makedirs(dst_dir, st[ST_MODE]) |
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os.chown(dst_dir, st[ST_UID], st[ST_GID]) |
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shutil.copy2(src_path, dst_path) |
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st = os.stat(src_path) |
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os.chown(dst_path, st[ST_UID], st[ST_GID]) |
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def RemoveFile(path): |
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'''Remove the file''' |
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if not os.path.exists(path): |
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if warn: |
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print "WARNING: attempt to remove non-existent file (%s)" % path |
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return |
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if not os.path.isfile(path): |
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if warn: |
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print "WARNING: attempt to remove non-plain file (%s)" % path |
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return |
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if not doit: |
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print "rm %s" % (path) |
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return |
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os.unlink(path) |
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def RemoveDirs(top): |
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'''Delete everything reachable from the directory named in 'top', |
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assuming there are no symbolic links. |
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CAUTION: This is dangerous! For example, if top == '/', it |
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could delete all your disk files.''' |
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for root, dirs, files in os.walk(top, topdown=False): |
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for name in files: |
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path = os.path.join(root, name) |
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if not doit: |
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print "rm %s" % (path) |
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else: |
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os.remove(path) |
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for name in dirs: |
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path = os.path.join(root, name) |
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if not doit: |
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print "rmdir %s" % (path) |
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else: |
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os.rmdir(path) |
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def Usage(): |
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print """ |
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This script will help you copy mailman data files from the old |
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directory structure to the new FHS directory structure. |
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Mailman should not be running when you perform this! |
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/sbin/service mailman stop |
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This script is conservative, by default it will not overwrite |
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any file in the new directory on the assumption it is most recent |
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and most correct. If you want to force overwrites use -f. |
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Files are copied to the new directories, if you want to remove the |
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old data files use -r. Hint: copy first and test, once everything is |
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working remove the old files with -r. If you want to remove the entire |
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old installation use -R |
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migrate [-f] [-n] [-q] [-v] [-w] [-m] [-r] [-R] |
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-n don't execute, but show what would be done |
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-f force destination overwrites |
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-m print mapping |
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-r remove old data files |
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-R remove entire old installation |
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-q be quiet |
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-v be verbose |
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-w print warnings |
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-h help |
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""" |
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#------------------------------------------------------------------------------ |
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try: |
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opts, args = getopt.getopt(sys.argv[1:], "nfvmqwhrR") |
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for o, a in opts: |
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if o == "-n": |
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doit = False |
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elif o == "-f": |
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force = True |
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elif o == "-v": |
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verbose = True |
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elif o == "-m": |
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print_mapping = True |
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elif o == "-q": |
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quiet = True |
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elif o == "-w": |
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warn = True |
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elif o == "-r": |
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remove_files = True |
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elif o == "-R": |
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remove_installation = True |
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elif o == "-h": |
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Usage() |
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sys.exit(1) |
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except getopt.GetoptError, err: |
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print err |
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Usage() |
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sys.exit(1) |
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if print_mapping: |
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DumpMapping() |
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sys.exit(0) |
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# Generate file list |
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for src_dir in data_dir_map.keys(): |
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GetCopyFiles(src_dir, dir_map[src_dir]) |
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for src_file in file_map.keys(): |
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RecordFile(src_file, file_map[src_file]) |
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# Copy files |
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for src in non_existing_files: |
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dst = non_existing_files[src] |
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CopyFile(src, dst) |
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if force: |
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for src in existing_files: |
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dst = existing_files[src] |
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CopyFile(src, dst) |
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else: |
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if len(existing_files) > 0 and not quiet: |
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print "\nThe following files already exist in the destination, they will NOT be copied" |
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print "To force overwriting invoke with -f\n" |
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for src in existing_files: |
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dst = existing_files[src] |
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print "# cp %s %s" %(src, dst) |
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# Remove old files |
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if remove_files: |
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for src in existing_files: |
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RemoveFile(src) |
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for src in non_existing_files: |
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RemoveFile(src) |
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if remove_installation: |
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for old_dir in dir_map.keys(): |
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RemoveDirs(old_dir) |
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sys.exit(0) |
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