+++ /dev/null
-#! /usr/bin/env python
-
-"""Mirror a remote ftp subtree into a local directory tree.
-
-usage: ftpmirror [-v] [-q] [-i] [-m] [-n] [-r] [-s pat]
- [-l username [-p passwd [-a account]]]
- hostname[:port] [remotedir [localdir]]
--v: verbose
--q: quiet
--i: interactive mode
--m: macintosh server (NCSA telnet 2.4) (implies -n -s '*.o')
--n: don't log in
--r: remove local files/directories no longer pertinent
--l username [-p passwd [-a account]]: login info (default .netrc or anonymous)
--s pat: skip files matching pattern
-hostname: remote host w/ optional port separated by ':'
-remotedir: remote directory (default initial)
-localdir: local directory (default current)
-"""
-
-import os
-import sys
-import time
-import getopt
-import ftplib
-import netrc
-from fnmatch import fnmatch
-
-# Print usage message and exit
-def usage(*args):
- sys.stdout = sys.stderr
- for msg in args: print msg
- print __doc__
- sys.exit(2)
-
-verbose = 1 # 0 for -q, 2 for -v
-interactive = 0
-mac = 0
-rmok = 0
-nologin = 0
-skippats = ['.', '..', '.mirrorinfo']
-
-# Main program: parse command line and start processing
-def main():
- global verbose, interactive, mac, rmok, nologin
- try:
- opts, args = getopt.getopt(sys.argv[1:], 'a:bil:mnp:qrs:v')
- except getopt.error, msg:
- usage(msg)
- login = ''
- passwd = ''
- account = ''
- if not args: usage('hostname missing')
- host = args[0]
- port = 0
- if ':' in host:
- host, port = host.split(':', 1)
- port = int(port)
- try:
- auth = netrc.netrc().authenticators(host)
- if auth is not None:
- login, account, passwd = auth
- except (netrc.NetrcParseError, IOError):
- pass
- for o, a in opts:
- if o == '-l': login = a
- if o == '-p': passwd = a
- if o == '-a': account = a
- if o == '-v': verbose = verbose + 1
- if o == '-q': verbose = 0
- if o == '-i': interactive = 1
- if o == '-m': mac = 1; nologin = 1; skippats.append('*.o')
- if o == '-n': nologin = 1
- if o == '-r': rmok = 1
- if o == '-s': skippats.append(a)
- remotedir = ''
- localdir = ''
- if args[1:]:
- remotedir = args[1]
- if args[2:]:
- localdir = args[2]
- if args[3:]: usage('too many arguments')
- #
- f = ftplib.FTP()
- if verbose: print "Connecting to '%s%s'..." % (host,
- (port and ":%d"%port or ""))
- f.connect(host,port)
- if not nologin:
- if verbose:
- print 'Logging in as %r...' % (login or 'anonymous')
- f.login(login, passwd, account)
- if verbose: print 'OK.'
- pwd = f.pwd()
- if verbose > 1: print 'PWD =', repr(pwd)
- if remotedir:
- if verbose > 1: print 'cwd(%s)' % repr(remotedir)
- f.cwd(remotedir)
- if verbose > 1: print 'OK.'
- pwd = f.pwd()
- if verbose > 1: print 'PWD =', repr(pwd)
- #
- mirrorsubdir(f, localdir)
-
-# Core logic: mirror one subdirectory (recursively)
-def mirrorsubdir(f, localdir):
- pwd = f.pwd()
- if localdir and not os.path.isdir(localdir):
- if verbose: print 'Creating local directory', repr(localdir)
- try:
- makedir(localdir)
- except os.error, msg:
- print "Failed to establish local directory", repr(localdir)
- return
- infofilename = os.path.join(localdir, '.mirrorinfo')
- try:
- text = open(infofilename, 'r').read()
- except IOError, msg:
- text = '{}'
- try:
- info = eval(text)
- except (SyntaxError, NameError):
- print 'Bad mirror info in', repr(infofilename)
- info = {}
- subdirs = []
- listing = []
- if verbose: print 'Listing remote directory %r...' % (pwd,)
- f.retrlines('LIST', listing.append)
- filesfound = []
- for line in listing:
- if verbose > 1: print '-->', repr(line)
- if mac:
- # Mac listing has just filenames;
- # trailing / means subdirectory
- filename = line.strip()
- mode = '-'
- if filename[-1:] == '/':
- filename = filename[:-1]
- mode = 'd'
- infostuff = ''
- else:
- # Parse, assuming a UNIX listing
- words = line.split(None, 8)
- if len(words) < 6:
- if verbose > 1: print 'Skipping short line'
- continue
- filename = words[-1].lstrip()
- i = filename.find(" -> ")
- if i >= 0:
- # words[0] had better start with 'l'...
- if verbose > 1:
- print 'Found symbolic link %r' % (filename,)
- linkto = filename[i+4:]
- filename = filename[:i]
- infostuff = words[-5:-1]
- mode = words[0]
- skip = 0
- for pat in skippats:
- if fnmatch(filename, pat):
- if verbose > 1:
- print 'Skip pattern', repr(pat),
- print 'matches', repr(filename)
- skip = 1
- break
- if skip:
- continue
- if mode[0] == 'd':
- if verbose > 1:
- print 'Remembering subdirectory', repr(filename)
- subdirs.append(filename)
- continue
- filesfound.append(filename)
- if info.has_key(filename) and info[filename] == infostuff:
- if verbose > 1:
- print 'Already have this version of',repr(filename)
- continue
- fullname = os.path.join(localdir, filename)
- tempname = os.path.join(localdir, '@'+filename)
- if interactive:
- doit = askabout('file', filename, pwd)
- if not doit:
- if not info.has_key(filename):
- info[filename] = 'Not retrieved'
- continue
- try:
- os.unlink(tempname)
- except os.error:
- pass
- if mode[0] == 'l':
- if verbose:
- print "Creating symlink %r -> %r" % (filename, linkto)
- try:
- os.symlink(linkto, tempname)
- except IOError, msg:
- print "Can't create %r: %s" % (tempname, msg)
- continue
- else:
- try:
- fp = open(tempname, 'wb')
- except IOError, msg:
- print "Can't create %r: %s" % (tempname, msg)
- continue
- if verbose:
- print 'Retrieving %r from %r as %r...' % (filename, pwd, fullname)
- if verbose:
- fp1 = LoggingFile(fp, 1024, sys.stdout)
- else:
- fp1 = fp
- t0 = time.time()
- try:
- f.retrbinary('RETR ' + filename,
- fp1.write, 8*1024)
- except ftplib.error_perm, msg:
- print msg
- t1 = time.time()
- bytes = fp.tell()
- fp.close()
- if fp1 != fp:
- fp1.close()
- try:
- os.unlink(fullname)
- except os.error:
- pass # Ignore the error
- try:
- os.rename(tempname, fullname)
- except os.error, msg:
- print "Can't rename %r to %r: %s" % (tempname, fullname, msg)
- continue
- info[filename] = infostuff
- writedict(info, infofilename)
- if verbose and mode[0] != 'l':
- dt = t1 - t0
- kbytes = bytes / 1024.0
- print int(round(kbytes)),
- print 'Kbytes in',
- print int(round(dt)),
- print 'seconds',
- if t1 > t0:
- print '(~%d Kbytes/sec)' % \
- int(round(kbytes/dt),)
- print
- #
- # Remove files from info that are no longer remote
- deletions = 0
- for filename in info.keys():
- if filename not in filesfound:
- if verbose:
- print "Removing obsolete info entry for",
- print repr(filename), "in", repr(localdir or ".")
- del info[filename]
- deletions = deletions + 1
- if deletions:
- writedict(info, infofilename)
- #
- # Remove local files that are no longer in the remote directory
- try:
- if not localdir: names = os.listdir(os.curdir)
- else: names = os.listdir(localdir)
- except os.error:
- names = []
- for name in names:
- if name[0] == '.' or info.has_key(name) or name in subdirs:
- continue
- skip = 0
- for pat in skippats:
- if fnmatch(name, pat):
- if verbose > 1:
- print 'Skip pattern', repr(pat),
- print 'matches', repr(name)
- skip = 1
- break
- if skip:
- continue
- fullname = os.path.join(localdir, name)
- if not rmok:
- if verbose:
- print 'Local file', repr(fullname),
- print 'is no longer pertinent'
- continue
- if verbose: print 'Removing local file/dir', repr(fullname)
- remove(fullname)
- #
- # Recursively mirror subdirectories
- for subdir in subdirs:
- if interactive:
- doit = askabout('subdirectory', subdir, pwd)
- if not doit: continue
- if verbose: print 'Processing subdirectory', repr(subdir)
- localsubdir = os.path.join(localdir, subdir)
- pwd = f.pwd()
- if verbose > 1:
- print 'Remote directory now:', repr(pwd)
- print 'Remote cwd', repr(subdir)
- try:
- f.cwd(subdir)
- except ftplib.error_perm, msg:
- print "Can't chdir to", repr(subdir), ":", repr(msg)
- else:
- if verbose: print 'Mirroring as', repr(localsubdir)
- mirrorsubdir(f, localsubdir)
- if verbose > 1: print 'Remote cwd ..'
- f.cwd('..')
- newpwd = f.pwd()
- if newpwd != pwd:
- print 'Ended up in wrong directory after cd + cd ..'
- print 'Giving up now.'
- break
- else:
- if verbose > 1: print 'OK.'
-
-# Helper to remove a file or directory tree
-def remove(fullname):
- if os.path.isdir(fullname) and not os.path.islink(fullname):
- try:
- names = os.listdir(fullname)
- except os.error:
- names = []
- ok = 1
- for name in names:
- if not remove(os.path.join(fullname, name)):
- ok = 0
- if not ok:
- return 0
- try:
- os.rmdir(fullname)
- except os.error, msg:
- print "Can't remove local directory %r: %s" % (fullname, msg)
- return 0
- else:
- try:
- os.unlink(fullname)
- except os.error, msg:
- print "Can't remove local file %r: %s" % (fullname, msg)
- return 0
- return 1
-
-# Wrapper around a file for writing to write a hash sign every block.
-class LoggingFile:
- def __init__(self, fp, blocksize, outfp):
- self.fp = fp
- self.bytes = 0
- self.hashes = 0
- self.blocksize = blocksize
- self.outfp = outfp
- def write(self, data):
- self.bytes = self.bytes + len(data)
- hashes = int(self.bytes) / self.blocksize
- while hashes > self.hashes:
- self.outfp.write('#')
- self.outfp.flush()
- self.hashes = self.hashes + 1
- self.fp.write(data)
- def close(self):
- self.outfp.write('\n')
-
-# Ask permission to download a file.
-def askabout(filetype, filename, pwd):
- prompt = 'Retrieve %s %s from %s ? [ny] ' % (filetype, filename, pwd)
- while 1:
- reply = raw_input(prompt).strip().lower()
- if reply in ['y', 'ye', 'yes']:
- return 1
- if reply in ['', 'n', 'no', 'nop', 'nope']:
- return 0
- print 'Please answer yes or no.'
-
-# Create a directory if it doesn't exist. Recursively create the
-# parent directory as well if needed.
-def makedir(pathname):
- if os.path.isdir(pathname):
- return
- dirname = os.path.dirname(pathname)
- if dirname: makedir(dirname)
- os.mkdir(pathname, 0777)
-
-# Write a dictionary to a file in a way that can be read back using
-# rval() but is still somewhat readable (i.e. not a single long line).
-# Also creates a backup file.
-def writedict(dict, filename):
- dir, fname = os.path.split(filename)
- tempname = os.path.join(dir, '@' + fname)
- backup = os.path.join(dir, fname + '~')
- try:
- os.unlink(backup)
- except os.error:
- pass
- fp = open(tempname, 'w')
- fp.write('{\n')
- for key, value in dict.items():
- fp.write('%r: %r,\n' % (key, value))
- fp.write('}\n')
- fp.close()
- try:
- os.rename(filename, backup)
- except os.error:
- pass
- os.rename(tempname, filename)
-
-
-if __name__ == '__main__':
- main()
projects / python / commitdiff