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fast winrm put_file without size restrictions

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This commit is contained in:
nitzmahone 2015-10-23 14:37:50 -07:00
parent 9b9fb51d9d
commit 549163170f
1 changed files with 102 additions and 35 deletions
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137
lib/ansible/plugins/connection/winrm.py
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@ -24,6 +24,8 @@ import os
import re
import shlex
import traceback
import json
import xmltodict
from ansible.compat.six.moves.urllib.parse import urlunsplit
@ -44,6 +46,7 @@ except ImportError:
from ansible.errors import AnsibleFileNotFound
from ansible.plugins.connection import ConnectionBase
from ansible.utils.hashing import secure_hash
from ansible.utils.path import makedirs_safe
from ansible.utils.unicode import to_bytes, to_unicode, to_str
from ansible.utils.vars import combine_vars
@ -151,7 +154,21 @@ class Connection(ConnectionBase):
else:
raise AnsibleError('No transport found for WinRM connection')
def _winrm_exec(self, command, args=(), from_exec=False):
def _winrm_send_input(self, protocol, shell_id, command_id, stdin, eof=False):
rq = {'env:Envelope': protocol._get_soap_header(
resource_uri='http://schemas.microsoft.com/wbem/wsman/1/windows/shell/cmd',
action='http://schemas.microsoft.com/wbem/wsman/1/windows/shell/Send',
shell_id=shell_id)}
stream = rq['env:Envelope'].setdefault('env:Body', {}).setdefault('rsp:Send', {})\
.setdefault('rsp:Stream', {})
stream['@Name'] = 'stdin'
stream['@CommandId'] = command_id
stream['#text'] = base64.b64encode(to_bytes(stdin))
if eof:
stream['@End'] = 'true'
rs = protocol.send_message(xmltodict.unparse(rq))
def _winrm_exec(self, command, args=(), from_exec=False, stdin_iterator=None):
if from_exec:
display.vvvvv("WINRM EXEC %r %r" % (command, args), host=self._winrm_host)
else:
@ -162,7 +179,19 @@ class Connection(ConnectionBase):
self.shell_id = self.protocol.open_shell(codepage=65001) # UTF-8
command_id = None
try:
command_id = self.protocol.run_command(self.shell_id, to_bytes(command), map(to_bytes, args))
command_id = self.protocol.run_command(self.shell_id, to_bytes(command), map(to_bytes, args), console_mode_stdin=(stdin_iterator == None))
# TODO: try/except around this, so we can get/return the command result on a broken pipe or other failure (probably more useful than the 500 that comes from this)
try:
if stdin_iterator:
for (data, is_last) in stdin_iterator:
self._winrm_send_input(self.protocol, self.shell_id, command_id, data, eof=is_last)
except:
# TODO: set/propagate an error flag, but don't throw (or include the command output in the exception)
pass
# NB: this could hang if the receiver is still running (eg, network failed a Send request but the server's still happy).
# Consider adding pywinrm status check/abort operations to see if the target is still running after a failure.
response = Response(self.protocol.get_command_output(self.shell_id, command_id))
if from_exec:
display.vvvvv('WINRM RESULT %r' % to_unicode(response), host=self._winrm_host)
@ -212,45 +241,83 @@ class Connection(ConnectionBase):
result.std_err = to_bytes(result.std_err)
return (result.status_code, result.std_out, result.std_err)
# FUTURE: determine buffer size at runtime via remote winrm config?
def _put_file_stdin_iterator(self, in_path, out_path, buffer_size=250000):
in_size = os.path.getsize(in_path)
offset = 0
with open(in_path, 'rb') as in_file:
for out_data in iter((lambda:in_file.read(buffer_size)), ''):
offset += len(out_data)
self._display.vvvvv('WINRM PUT "%s" to "%s" (offset=%d size=%d)' % (in_path, out_path, offset, len(out_data)), host=self._winrm_host)
# yes, we're double-encoding over the wire in this case- we want to ensure that the data shipped to the end PS pipeline is still b64-encoded
b64_data = base64.b64encode(out_data) + '\r\n'
# cough up the data, as well as an indicator if this is the last chunk so winrm_send knows to set the End signal
yield b64_data, (in_file.tell() == in_size)
if offset == 0: # empty file, return an empty buffer + eof to close it
yield "", True
def put_file(self, in_path, out_path):
super(Connection, self).put_file(in_path, out_path)
out_path = self._shell._unquote(out_path)
display.vvv('PUT "%s" TO "%s"' % (in_path, out_path), host=self._winrm_host)
if not os.path.exists(in_path):
raise AnsibleFileNotFound('file or module does not exist: "%s"' % in_path)
with open(in_path) as in_file:
in_size = os.path.getsize(in_path)
script_template = '''
$s = [System.IO.File]::OpenWrite("%s");
[void]$s.Seek(%d, [System.IO.SeekOrigin]::Begin);
$b = [System.Convert]::FromBase64String("%s");
[void]$s.Write($b, 0, $b.length);
[void]$s.SetLength(%d);
[void]$s.Close();
'''
# Determine max size of data we can pass per command.
script = script_template % (self._shell._escape(out_path), in_size, '', in_size)
cmd = self._shell._encode_script(script)
# Encode script with no data, subtract its length from 8190 (max
# windows command length), divide by 2.67 (UTF16LE base64 command
# encoding), then by 1.35 again (data base64 encoding).
buffer_size = int(((8190 - len(cmd)) / 2.67) / 1.35)
for offset in xrange(0, in_size or 1, buffer_size):
try:
out_data = in_file.read(buffer_size)
if offset == 0:
if out_data.lower().startswith('#!powershell') and not out_path.lower().endswith('.ps1'):
out_path = out_path + '.ps1'
b64_data = base64.b64encode(out_data)
script = script_template % (self._shell._escape(out_path), offset, b64_data, in_size)
display.vvvvv('WINRM PUT "%s" to "%s" (offset=%d size=%d)' % (in_path, out_path, offset, len(out_data)), host=self._winrm_host)
cmd_parts = self._shell._encode_script(script, as_list=True)
result = self._winrm_exec(cmd_parts[0], cmd_parts[1:])
if result.status_code != 0:
raise IOError(to_str(result.std_err))
except Exception:
traceback.print_exc()
raise AnsibleError('failed to transfer file to "%s"' % out_path)
script_template = '''
begin {{
$path = "{0}"
$DebugPreference = "Continue"
$ErrorActionPreference = "Stop"
Set-StrictMode -Version 2
$fd = [System.IO.File]::Create($path)
$sha1 = [System.Security.Cryptography.SHA1CryptoServiceProvider]::Create()
$bytes = @() #initialize for empty file case
}}
process {{
$bytes = [System.Convert]::FromBase64String($input)
$sha1.TransformBlock($bytes, 0, $bytes.Length, $bytes, 0) | Out-Null
$fd.Write($bytes, 0, $bytes.Length)
}}
end {{
$sha1.TransformFinalBlock($bytes, 0, 0) | Out-Null
$hash = [System.BitConverter]::ToString($sha1.Hash).Replace("-", "").ToLowerInvariant()
$fd.Close()
Write-Output "{{""sha1"":""$hash""}}"
}}
'''
# FUTURE: this sucks- why can't the module/shell stuff do this?
with open(in_path, 'r') as temp_file:
if temp_file.read(15).lower().startswith('#!powershell') and not out_path.lower().endswith('.ps1'):
out_path = out_path + '.ps1'
script = script_template.format(self._shell._escape(out_path))
cmd_parts = self._shell._encode_script(script, as_list=True, strict_mode=False)
result = self._winrm_exec(cmd_parts[0], cmd_parts[1:], stdin_iterator=self._put_file_stdin_iterator(in_path, out_path))
# TODO: improve error handling
if result.status_code != 0:
raise IOError(to_str(result.std_err))
put_output = json.loads(result.std_out)
remote_sha1 = put_output.get("sha1")
if not remote_sha1:
raise IOError("Remote sha1 was not returned")
local_sha1 = secure_hash(in_path)
if not remote_sha1 == local_sha1:
raise IOError("Remote sha1 hash {0} does not match local hash {1}".format(remote_sha1, local_sha1))
def fetch_file(self, in_path, out_path):
super(Connection, self).fetch_file(in_path, out_path)