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#
# urlinstall.py - URL based install source method
#
# Erik Troan <ewt@redhat.com>
#
# Copyright 1999-2002 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 hdrlist import groupSetFromCompsFile, HeaderList
from installmethod import InstallMethod, FileCopyException
import iutil
import isys
import os
import rpm
import time
import urllib2
import string
import struct
import socket
from snack import *
from constants import *
from rhpl.translate import _
# we import these explicitly because urllib loads them dynamically, which
# stinks -- and we need to have them imported for the --traceonly option
import ftplib
import httplib
import StringIO
from rhpl.log import log
FILENAME = 1000000
DISCNUM = 1000002
def urlretrieve(location, file, callback=None):
"""Downloads from location and saves to file."""
if callback is not None:
callback(_("Connecting..."), 0)
try:
url = urllib2.urlopen(location)
except urllib2.HTTPError, e:
raise IOError(e.code, e.msg)
except urllib2.URLError, e:
raise IOError(-1, e.reason)
# see if there is a size
try:
filesize = int(url.info()["Content-Length"])
except:
filesize = None
# handle zero length case
if filesize == 0:
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 readCompsViaMethod(self, hdlist):
fname = self.findBestFileMatch(None, 'comps.xml')
# if not local then assume its on host
if fname is None:
fname = '%s/%s/base/comps.xml' % (self.baseUrl, productPath)
log("Comps not in update dirs, using %s",fname)
return groupSetFromCompsFile(fname, hdlist)
def filesDone(self):
if self.tree is None:
return
try:
isys.umount("/mnt/source")
except Exception, e:
log("failed to umount /mnt/source in filesDone")
if self.loopbackFile:
try:
os.unlink(self.loopbackFile)
except:
pass
def systemUnmounted(self):
if self.loopbackFile:
isys.makeDevInode("loop0", "/tmp/loop")
isys.lochangefd("/tmp/loop",
"%s/%s/base/stage2.img" % (self.tree, productPath))
self.loopbackFile = None
def systemMounted(self, fsset, chroot):
if self.tree is None:
return
self.loopbackFile = "%s%s%s" % (chroot,
fsset.filesystemSpace(chroot)[0][0],
"/rhinstall-stage2.img")
try:
iutil.copyFile("%s/%s/base/stage2.img" % (self.tree, productPath),
self.loopbackFile,
(self.progressWindow, _("Copying File"),
_("Transferring install image to hard drive...")))
except Exception, e:
log("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.makeDevInode("loop0", "/tmp/loop")
isys.lochangefd("/tmp/loop", self.loopbackFile)
def getFilename(self, filename, callback=None, destdir=None, retry=1,
disc = 1):
if destdir is None:
tmppath = self.getTempPath()
else:
tmppath = destdir
if self.multiDiscs:
base = "%s/disc%d" %(self.pkgUrl, disc)
else:
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("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 getRPMFilename(self, h, timer, callback=None):
fullPath = "/%s/RPMS/%s" % (productPath, h[FILENAME])
return self.getFilename(fullPath, callback=callback, disc = h[DISCNUM])
def copyFileToTemp(self, filename):
tmppath = self.getTempPath()
if self.multiDiscs:
base = "%s/disc1" % (self.pkgUrl,)
else:
base = self.pkgUrl
fullPath = base + "/" + filename
file = tmppath + "/" + os.path.basename(fullPath)
tries = 0
while tries < 5:
try:
urlretrieve(fullPath, file)
except IOError, (errnum, msg):
log("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 unlinkFilename(self, fullName):
os.remove(fullName)
def readHeaders(self):
tries = 0
while tries < 5:
hdurl = "%s/%s/base/hdlist" % (self.baseUrl, productPath)
try:
url = urllib2.urlopen(hdurl)
except urllib2.HTTPError, e:
log("HTTPError: %s occurred getting %s", hdurl, e)
except urllib2.URLError, e:
log("URLError: %s occurred getting %s", hdurl, e)
except IOError, (errnum, msg):
log("IOError %s occurred getting %s: %s",
errnum, hdurl, msg)
else:
break
time.sleep(5)
tries = tries + 1
if tries >= 5:
raise FileCopyException
raw = url.read(16)
if raw is None or len(raw) < 1:
raise TypeError, "header list is empty!"
hl = []
while (raw and len(raw)>0):
info = struct.unpack("iiii", raw)
magic1 = socket.ntohl(info[0]) & 0xffffffffL
if (magic1 != 0x8eade801L or info[1]):
raise TypeError, "bad magic in header"
il = socket.ntohl(info[2])
dl = socket.ntohl(info[3])
totalSize = il * 16 + dl;
hdrString = raw[8:] + url.read(totalSize)
hdr = rpm.headerLoad(hdrString)
hl.append(hdr)
raw = url.read(16)
return HeaderList(hl)
def mergeFullHeaders(self, hdlist):
fn = self.getFilename("%s/base/hdlist2" % (productPath,), callback=None)
hdlist.mergeFullHeaders(fn)
os.unlink(fn)
def setIntf(self, intf):
self.intf = intf
self.messageWindow = intf.messageWindow
self.progressWindow = intf.progressWindow
def __init__(self, url, rootPath):
InstallMethod.__init__(self, rootPath)
if url.startswith("ftp"):
isFtp = 1
else:
isFtp = 0
# build up the url. this is tricky so that we can replace
# the first instance of // with /%3F to do absolute URLs right
i = string.index(url, '://') + 3
self.baseUrl = url[:i]
rem = url[i:]
i = string.index(rem, '/') + 1
self.baseUrl = self.baseUrl + rem[:i]
rem = rem[i:]
# encoding fun so that we can handle absolute paths
if rem.startswith("/") and isFtp:
rem = "%2F" + rem[1:]
self.baseUrl = self.baseUrl + rem
if self.baseUrl[-1] == "/":
self.baseUrl = self.baseUrl[:-1]
# self.baseUrl points at the path which contains the 'RedHat'
# directory with the hdlist.
if self.baseUrl[-6:] == "/disc1":
self.multiDiscs = 1
self.pkgUrl = self.baseUrl[:-6]
else:
self.multiDiscs = 0
self.pkgUrl = self.baseUrl
self.intf = None
self.messageWindow = None
self.progressWindow = None
self.loopbackFile = None
self.tree = "/mnt/source"
for path in ("/tmp/ramfs/stage2.img", "/tmp/ramfs/netstg2.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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