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'''
This example shows how to use the lightblue.obex.OBEXClient class to implement a
basic client for the File Transfer Profile, which is a profile implemented on
top of OBEX. This profile allows clients to:
- send files
- retrieve files
- create and remove directories
- change the current working directory
You can find a copy of the profile specification at
<http://www.bluetooth.com/Bluetooth/Technology/Building/Specifications/>.
'''
import sys
import os
import lightblue
# This is the special Target UUID (F9EC7BC4-953C-11D2-984E-525400DC9E09) for the
# File Transfer Profile, in byte form. You can get this in Python 2.5 using the
# uuid module:
# >>> print uuid.UUID('{F9EC7BC4-953C-11D2-984E-525400DC9E09}').bytes
FTP_TARGET_UUID = '\xf9\xec{\xc4\x95<\x11\xd2\x98NRT\x00\xdc\x9e\t'
# A note about Connection ID headers:
# Notice that the FTPClient does not send the Connection ID in any of the
# request headers, even though this is required by the File Transfer Profile
# specs. This is because the OBEXClient class automatically sends the Connection
# ID with each request if it received one from the server in the initial Connect
# response headers, so you do not have to add it yourself.
class FTPClient(object):
def __init__(self, address, port):
self.client = lightblue.obex.OBEXClient(address, port)
def connect(self):
response = self.client.connect({'target': FTP_TARGET_UUID})
if response.code != lightblue.obex.OK:
raise Exception('OBEX server refused Connect request (server \
response was "%s")' % response.reason)
def disconnect(self):
print "Disconnecting..."
response = self.client.disconnect()
print 'Server response:', response.reason
def ls(self):
import StringIO
dirlist = StringIO.StringIO()
response = self.client.get({'type': 'x-obex/folder-listing'}, dirlist)
print 'Server response:', response.reason
if response.code == lightblue.obex.OK:
files = self._parsefolderlisting(dirlist.getvalue())
if len(files) == 0:
print 'No files found'
else:
print 'Found files:'
for f in files:
print '\t', f
def cd(self, dirname):
if dirname == os.sep:
# change to root dir
response = self.client.setpath({'name': ''})
elif dirname == '..':
# change to parent directory
response = self.client.setpath({}, cdtoparent=True)
else:
# change to subdirectory
response = self.client.setpath({'name': dirname})
print 'Server response:', response.reason
def put(self, filename):
print 'Sending %s...' % filename
try:
f = file(filename, 'rb')
except Exception, e:
print "Cannot open file %s" % filename
return
response = self.client.put({'name': os.path.basename(filename)}, f)
f.close()
print 'Server response:', response.reason
def get(self, filename):
if os.path.isfile(filename):
if raw_input("Overwrite local file %s?" % filename).lower() != "y":
return
print 'Retrieving %s...' % filename
f = file(filename, 'wb')
response = self.client.get({'name': filename}, f)
f.close()
print 'Server response:', response.reason
def rm(self, filename):
response = self.client.delete({'name': filename})
print 'Server response:', response.reason
def mkdir(self, dirname):
response = self.client.setpath({'name': dirname}, createdirs=True)
print 'Server response:', response.reason
def rmdir(self, dirname):
response = self.client.delete({'name': dirname})
print 'Server response:', response.reason
if response.code == lightblue.obex.PRECONDITION_FAILED:
print 'Directory contents must be deleted first'
def _parsefolderlisting(self, xmldata):
"""
Returns a list of basic details for the files and folders contained in
the given XML folder-listing data. (The complete folder-listing XML DTD
is documented in the IrOBEX specification.)
"""
if len(xmldata) == 0:
print "Error parsing folder-listing XML: no xml data"
return []
entries = []
import xml.dom.minidom
import xml.parsers.expat
try:
dom = xml.dom.minidom.parseString(xmldata)
except xml.parsers.expat.ExpatError, e:
print "Error parsing folder-listing XML (%s): '%s'" % \
(str(e), xmldata)
return []
parent = dom.getElementsByTagName('parent-folder')
if len(parent) != 0:
entries.append('..')
folders = dom.getElementsByTagName('folder')
for f in folders:
entries.append('%s/\t%s' % (f.getAttribute('name'),
f.getAttribute('size')))
files = dom.getElementsByTagName('file')
for f in files:
entries.append('%s\t%s' % (f.getAttribute('name'),
f.getAttribute('size')))
return entries
def processcommands(ftpclient):
while True:
input = raw_input('\nEnter command: ')
cmd = input.split(" ")[0].lower()
if not cmd:
continue
if cmd == 'exit':
break
try:
method = getattr(ftpclient, cmd)
except AttributeError:
print 'Unknown command "%s".' % cmd
print main.__doc__
continue
if cmd == 'ls':
if " " in input.strip():
print "(Ignoring path, can only list contents of current dir)"
method()
else:
name = input[len(cmd)+1:] # file or directory name required
method(name)
def main():
"""
Usage: python obex_ftp_client.py [address channel]
If the address and channel are not provided, the user will be prompted to
choose a service.
Once the client is connected, you can enter one of these commands:
ls
cd <directory> (use '..' to change to parent, or '/' to change to root)
put <file>
get <file>
rm <file>
mkdir <directory>
rmdir <directory>
exit
Some servers accept "/" path separators within the <file> or <filename>
arguments. Otherwise, you will have to just send either a single directory
or filename, without any paths.
"""
if len(sys.argv) > 1:
address = sys.argv[1]
channel = int(sys.argv[2])
else:
# ask user to choose a service
# a FTP service is usually called 'FTP', 'OBEX File Transfer', etc.
address, channel, servicename = lightblue.selectservice()
print 'Connecting to %s on channel %d...' % (address, channel)
ftpclient = FTPClient(address, channel)
ftpclient.connect()
print 'Connected.'
try:
processcommands(ftpclient)
finally:
try:
ftpclient.disconnect()
except Exception, e:
print "Error while disconnecting:", e
pass
if __name__ == "__main__":
main()
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