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#
# urlinstall.py - URL based install source method
#
# Erik Troan <ewt@redhat.com>
#
# Copyright 1999-2006 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 re
import time
import string
import socket
import urlparse
import urlgrabber.grabber as grabber
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 badPackageError(self, pkgname):
return _("The file %s cannot be opened. This is due to a missing "
"file or perhaps a corrupt package. Please verify your "
"mirror contains all required packages, and try using a "
"different one.\n\n"
"If you reboot, your system will be left in an inconsistent "
"state that will likely require reinstallation.\n\n") % pkgname
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 unlinkFilename(self, fullName):
os.remove(fullName)
def setIntf(self, intf):
self.intf = intf
def getMethodUri(self):
return self.baseUrl
def switchMedia(self, mediano, filename=""):
if self.splitmethod:
self.baseUrl = self.baseUrls[mediano - 1]
def __checkUrlForIsoMounts(self):
# account for multiple mounted ISOs on loopback...bleh
# assumes ISOs are mounted as AAAAN where AAAA is some alpha text
# and N is an integer. so users could have these paths:
# CD1, CD2, CD3
# disc1, disc2, disc3
# qux1, qux2, qux3
# as long as the alpha text is consistent and the ints increment
#
# NOTE: this code is basically a guess. we don't really know if
# they are doing a loopback ISO install, but make a guess and
# shove all that at yum and hope for the best --dcantrell
discdir = os.path.basename(self.pkgUrl)
alpharm = re.compile("^[^0-9]+")
discnum = alpharm.sub("", discdir)
try:
discnum = int(discnum)
stripnum = re.compile("%s$" % (discnum,))
basepath = stripnum.sub("", self.pkgUrl)
# add all possible baseurls
discnum = 1
baseurls = [] # self.pkgUrl ]
while True:
dirpath = "%s%s" % (basepath, discnum)
try:
filename = self.__copyFileToTemp(dirpath, ".discinfo")
self.unlinkFilename(filename)
except:
break
log.debug("Adding baseurl: %s" % (dirpath,))
baseurls.append("%s" % (dirpath,))
try:
self.unlinkFilename(filename)
except:
pass
discnum += 1
if len(baseurls) > 1:
self.baseUrls = tuple(baseurls)
self.splitmethod = True
except ValueError:
# we didn't figure out the user's dir naming scheme
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.__checkUrlForIsoMounts()
self.currentMedia = []
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