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vfs.py
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vfs.py
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# -*- coding: iso8859-1 -*-
"""vfs.py
This module manages vfs connections via avfs, sshfs, curlftpfs
"""
import os
from tempfile import mkdtemp
import curses
import wcall
from utils import get_shell_output
######################################################################
arch_vfs = ('tar:', 'tbz2:', 'tgz:', 'gz:', 'zip:', 'rar:', 'cab:', 'deb:', 'rpm:')
net_vfs = ('ssh:', 'ftp:')
pkg_exts = ('.tar', '.tar.bz2', '.tbz2', '.bz2', '.tar.gz', '.tgz', '.tar.Z', '.gz', '.zip','.rar','.deb','.rpm','cpio','lha','zoo')
def check_avfs_type(filename):
for e in pkg_exts:
if filename.endswith(e):
return True
return False
class VFS:
def __init__(self, vfs_path, tab_path, filename, vfstype = 'pkg:'):
self.base =''
self.prev_path = ''
self.avfs = os.path.expanduser('~/.avfs')
self.server = vfs_path
self.__execute_command()
self.set_virtual_base()
self.mounted = True
if not os.path.isdir(self.base) or not os.listdir(self.base):
self.mounted = False
self.exit()
self.prev_path = tab_path
self.sel_file = filename
def __execute_command(self):
cmd = 'mountavfs'
get_shell_output(cmd)
self.base = self.avfs + self.server
def set_virtual_base(self):
"""set prefix for the virtual path, like 'ssh://me@myserver.com'"""
self.vbase = 'pkg://'+self.base.replace(self.avfs, '')
def __del(self):
self.exit()
def exit(self):
self.base = ''
self.vfs = ''
self.vbase = ''
self.vfs_file = ''
def check_exit(self,path):
normpath = os.path.normpath(path)
if normpath.find(os.path.basename(self.server)) <= 0: #tmpdirname not in path ?
self.exit()
if os.path.basename(path) == os.pardir:
path = os.path.dirname(self.vbase)
self.vfs, self.base, self.vbase = '', '',''
return self.sel_file, self.prev_path # exit vfs
return '','' # do not exit vfs
def vfs_name(self):
return self.server
def vfs_path(self, path):
'''return full virtual path, i.e vbase + server path '''
return 'pkg://'+path.replace(self.avfs, '')
class VFS_net:
def __init__(self, app, vfs_path, tab_path, filename, vfstype):
self.app = app
self.base =''
self.cmd = ''
self.prev_path = ''
self.vfs = vfstype
if vfstype in net_vfs:
if not self.__parse_command(vfs_path):
return
if not self.__build_command():
return
self.__execute_command()
self.vbase = self.__set_virtual_base()
self.mounted = True
if not os.listdir(self.base):
self.mounted = False
self.exit()
self.prev_path = tab_path
self.sel_file = filename
def __execute_command(self):
self.base = mkdtemp('',self.server) # tempdir basename
curses.endwin()
cmd = 'echo \'Connecting to host %s..\'; %s %s'\
%(self.server,self.cmd, self.base)
os.system(cmd)
curses.curs_set(0)
def __parse_command(self, path):
self.protocol, self.login, self.server, self.port, self.path =\
'','','','',''
try:
self.protocol, cmd = path.split('//',1)
except:
wcall.err_unsuported_protocol()
return False
lst = cmd.split('@',1)
if len(lst) > 1:
self.login, cmd = lst[0], lst[1]
else:
cmd = lst[0]
lst2 =cmd.split('/',1)
if len(lst2) > 1:
self.path = os.sep + lst2[1]
lst3 = lst2[0].split(':',1)
self.server = lst3[0]
if len(lst3) > 1:
self.port = lst3[1]
return True
def __build_command(self):
if self.protocol == 'ssh:':
self.cmd = self.server
if self.login:
self.cmd = ''.join([self.login,'@',self.cmd])
if not self.path:
self.path = os.sep
#instead of path add use server root dir for mounting
self.cmd = ''.join([self.cmd, ':' ,os.sep])
if self.port:
self.cmd = ''.join([self.cmd,' -p ',self.port])
self.cmd = ''.join(['sshfs ', self.cmd, ' '])
elif self.protocol == 'ftp:':
self.cmd = self.server
if not self.login:
self.login = 'anonymous:no'
self.cmd = ''.join(['-o user=', self.login,' ',self.cmd])
if self.port:
self.cmd = ''.join([self.cmd, ':', self.port])
if not self.path:
self.path = os.sep
#instead of path add use server root dir for mounting
self.cmd = ''.join([self.cmd, os.sep])
self.cmd = ''.join(['curlftpfs ', self.cmd, ' '])
else:
wcall.err_unsuported_protocol()
return False
return True
def __set_virtual_base(self):
"""set prefix for the virtual path, like 'ssh://me@myserver.com'"""
vbase = ''.join([self.protocol,'//',self.login,'@',self.server])
if self.port:
vbase = ''.join([vbase, ':', self.port])
return vbase
def __del(self):
self.exit()
def exit(self):
if self.base:
if self.mounted:
os.system('fusermount -u %s' %(self.base))
try:
os.rmdir(self.base)
except:
pass
self.base = ''
self.vfs = ''
self.vbase = ''
self.vfs_file = ''
def check_exit(self,path):
normpath = os.path.normpath(path)
if normpath.find(os.path.basename(self.base)) <= 0: #tmpdirname not in path ?
self.exit()
if os.path.basename(path) == os.pardir:
path = os.path.dirname(self.vbase)
self.vfs, self.base, self.vbase = '', '',''
return self.sel_file, self.prev_path # exit vfs
return '','' # do not exit vfs
def vfs_name(self):
return self.server
def vfs_path(self, path):
'''return full virtual path, i.e vbase + server path '''
return self.vbase + path.replace(self.base, '')