def compose_bcd(self, kernel_params, local_host):
"""Composes the Windows boot configuration data.
:param kernel_params: An instance of `KernelParameters`.
:return: Binary data
"""
preseed_url = self.compose_preseed_url(kernel_params.preseed_url)
release_path = "%s\\source" % kernel_params.release
remote_path = "\\\\%s\\reminst" % local_host
loadoptions = "%s;%s;%s" % \
(remote_path, release_path, preseed_url)
# Generate the bcd file.
bcd_template = self.get_resource_path(kernel_params, "bcd")
if not os.path.isfile(bcd_template):
raise BootMethodError("Failed to find bcd template: %s" %
bcd_template)
with tempdir() as tmp:
bcd_tmp = os.path.join(tmp, "bcd")
shutil.copyfile(bcd_template, bcd_tmp)
bcd = Bcd(bcd_tmp)
bcd.set_load_options(loadoptions)
with open(bcd_tmp, 'rb') as stream:
return BytesReader(stream.read())
def match_path(self, backend, path):
"""Checks path to see if the boot method should handle
the requested file.
:param backend: requesting backend
:param path: requested path
:return: dict of match params from path, None if no match
"""
# If the node is requesting the initial bootloader, then we
# need to see if this node is set to boot Windows first.
local_host, local_port = tftp.get_local_address()
if path in ['pxelinux.0', 'lpxelinux.0']:
data = yield self.get_node_info()
if data is None:
returnValue(None)
# Only provide the Windows bootloader when installing
# PXELINUX chainloading will work for the rest of the time.
purpose = data.get('purpose')
if purpose != 'install':
returnValue(None)
osystem = data.get('osystem')
if osystem == 'windows':
# python-hivex is needed to continue.
if get_hivex_module() is None:
raise BootMethodError('python-hivex package is missing.')
returnValue({
'mac': data.get('mac'),
'path': self.bootloader_path,
'local_host': local_host,
})
# Fix the paths for the other static files, Windows requests.
elif path.lower() in STATIC_FILES:
returnValue({
'mac': get_remote_mac(),
'path': self.clean_path(path),
'local_host': local_host,
})
returnValue(None)
def match_path(self, backend, path):
"""Checks path to see if the boot method should handle
the requested file.
:param backend: requesting backend
:param path: requested path
:return: dict of match params from path, None if no match
"""
# If the node is requesting the initial bootloader, then we
# need to see if this node is set to boot Windows first.
local_host, local_port = tftp.get_local_address()
if path in ["pxelinux.0", "lpxelinux.0"]:
data = yield self.get_node_info()
if data is None:
return None
# Only provide the Windows bootloader when installing
# PXELINUX chainloading will work for the rest of the time.
purpose = data.get("purpose")
if purpose != "install":
return None
osystem = data.get("osystem")
if osystem == "windows":
# python-hivex is needed to continue.
if get_hivex_module() is None:
raise BootMethodError("python-hivex package is missing.")
return {
"mac": data.get("mac"),
"path": self.bootloader_path,
"local_host": local_host,
}
# Fix the paths for the other static files, Windows requests.
elif path.lower() in STATIC_FILES:
return {
"mac": get_remote_mac(),
"path": self.clean_path(path),
"local_host": local_host,
}