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|
#
# urlinstall.py - URL based install source method
#
# Erik Troan <ewt@redhat.com>
#
# Copyright 1999-2007 Red Hat, Inc.
#
# This software may be freely redistributed under the terms of the GNU
# library public license.
#
# You should have received a copy of the GNU Library Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
#
from installmethod import InstallMethod, FileCopyException
import os
import time
import shutil
import string
import socket
import urlparse
import urlgrabber.grabber as grabber
import isys
from snack import *
from constants import *
from rhpl.translate import _
import logging
log = logging.getLogger("anaconda")
def urlretrieve(location, file, callback=None):
"""Downloads from location and saves to file."""
if callback is not None:
callback(_("Connecting..."), 0)
try:
url = grabber.urlopen(location)
except grabber.URLGrabError, e:
raise IOError (e.errno, e.strerror)
# see if there is a size
try:
filesize = int(url.info()["Content-Length"])
if filesize == 0:
filesize = None
except:
filesize = None
# create output file
f = open(file, 'w+')
# if they dont want a status callback just do it in one big swoop
if callback is None:
f.write(url.read())
else:
buf = url.read(65535)
tot = len(buf)
while len(buf) > 0:
if filesize is not None:
callback("downloading", "%3d%%" % ((100*tot)/filesize,))
else:
callback("downloading", "%dKB" % (tot/1024,))
f.write(buf)
buf = url.read(65535)
tot += len(buf)
f.close()
url.close()
class UrlInstallMethod(InstallMethod):
def systemUnmounted(self):
if self.loopbackFile:
isys.lochangefd("/dev/loop0",
"%s/images/stage2.img" % (self.tree,))
self.loopbackFile = None
def systemMounted(self, fsset, chroot):
if self.tree is None:
return
if not os.path.exists("%s/images/stage2.img" %(self.tree,)):
log.debug("Not copying stage2.img as we can't find it")
return
self.loopbackFile = "%s%s%s" % (chroot,
fsset.filesystemSpace(chroot)[0][0],
"/rhinstall-stage2.img")
try:
win = self.waitWindow (_("Copying File"),
_("Transferring install image to hard drive..."))
shutil.copyfile("%s/images/stage2.img" % (self.tree,),
self.loopbackFile)
win.pop()
except Exception, e:
if win:
win.pop()
log.critical("error transferring stage2.img: %s" %(e,))
self.messageWindow(_("Error"),
_("An error occurred transferring the install image "
"to your hard drive. You are probably out of disk "
"space."))
os.unlink(self.loopbackFile)
return 1
isys.lochangefd("/dev/loop0", self.loopbackFile)
def getFilename(self, filename, callback=None, destdir=None, retry=1):
if destdir is None:
tmppath = self.getTempPath()
else:
tmppath = destdir
base = self.pkgUrl
fullPath = base + "/" + filename
file = tmppath + "/" + os.path.basename(fullPath)
tries = 0
while tries < 5:
try:
rc=urlretrieve(fullPath, file, callback=callback)
except IOError, (errnum, msg):
log.critical("IOError %s occurred getting %s: %s"
%(errnum, fullPath.replace("%", "%%"), str(msg)))
if not retry:
raise FileCopyException
time.sleep(5)
else:
break
tries = tries + 1
if tries >= 5:
raise FileCopyException
return file
def __copyFileToTemp(self, baseurl, filename, raise404=False):
tmppath = self.getTempPath()
fullPath = baseurl + "/" + filename
file = tmppath + "/" + os.path.basename(fullPath)
tries = 0
while tries < 5:
try:
urlretrieve(fullPath, file)
except IOError, (errnum, msg):
if errnum == 14 and "404" in msg and raise404:
raise
log.critical("IOError %s occurred getting %s: %s",
errnum, fullPath.replace("%", "%%"), str(msg))
time.sleep(5)
else:
break
tries = tries + 1
if tries >= 5:
raise FileCopyException
return file
def copyFileToTemp(self, filename):
return self.__copyFileToTemp(self.pkgUrl, filename)
def setIntf(self, intf):
self.intf = intf
self.messageWindow = intf.messageWindow
self.progressWindow = intf.progressWindow
def getMethodUri(self):
return self.baseUrl
def unmountCD(self):
if not self.tree:
return
done = 0
while done == 0:
try:
isys.umount("/mnt/source")
break
except Exception, e:
log.error("exception in unmountCD: %s" %(e,))
self.messageWindow(_("Error"),
_("An error occurred unmounting the disc. "
"Please make sure you're not accessing "
"%s from the shell on tty2 "
"and then click OK to retry.")
% ("/mnt/source",))
def filesDone(self):
# we're trying to unmount the CD here. if it fails, oh well,
# they'll reboot soon enough I guess :)
try:
isys.umount("/mnt/source")
except Exception:
pass
if not self.loopbackFile: return
try:
# this isn't the exact right place, but it's close enough
os.unlink(self.loopbackFile)
except SystemError:
pass
def __init__(self, url, rootPath, intf):
InstallMethod.__init__(self, url, rootPath, intf)
(scheme, netloc, path, query, fragid) = urlparse.urlsplit(url)
try:
socket.inet_pton(socket.AF_INET6, netloc)
netloc = '[' + netloc + ']'
except:
pass
# encoding fun so that we can handle absolute paths
if scheme == "ftp" and path and path.startswith("//"):
path = "/%2F" + path[1:]
self.baseUrl = urlparse.urlunsplit((scheme,netloc,path,query,fragid))
self.pkgUrl = self.baseUrl
self.currentMedia = []
self.messageWindow = intf.messageWindow
self.progressWindow = intf.progressWindow
self.waitWindow = intf.waitWindow
self.loopbackFile = None
self.tree = "/mnt/source"
for path in ("/tmp/ramfs/stage2.img", "/tmp/ramfs/minstg2.img"):
if os.access(path, os.R_OK):
# we used a remote stage2. no need to worry about ejecting CDs
self.tree = None
break
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