1158 lines
34 KiB
C
1158 lines
34 KiB
C
/***************************************************************************
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* _ _ ____ _
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* Project ___| | | | _ \| |
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* / __| | | | |_) | |
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* | (__| |_| | _ <| |___
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* \___|\___/|_| \_\_____|
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*
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* Copyright (C) 1998 - 2008, Daniel Stenberg, <daniel@haxx.se>, et al.
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*
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* This software is licensed as described in the file COPYING, which
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* you should have received as part of this distribution. The terms
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* are also available at http://curl.haxx.se/docs/copyright.html.
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*
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* You may opt to use, copy, modify, merge, publish, distribute and/or sell
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* copies of the Software, and permit persons to whom the Software is
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* furnished to do so, under the terms of the COPYING file.
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*
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* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
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* KIND, either express or implied.
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*
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* $Id: http_ntlm.c,v 1.74 2008-10-23 11:49:19 bagder Exp $
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***************************************************************************/
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#include "setup.h"
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/* NTLM details:
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http://davenport.sourceforge.net/ntlm.html
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http://www.innovation.ch/java/ntlm.html
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Another implementation:
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http://lxr.mozilla.org/mozilla/source/security/manager/ssl/src/nsNTLMAuthModule.cpp
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*/
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#ifndef CURL_DISABLE_HTTP
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#ifdef USE_NTLM
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#define DEBUG_ME 0
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/* -- WIN32 approved -- */
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#include <stdio.h>
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#include <string.h>
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#include <stdarg.h>
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#include <stdlib.h>
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#include <ctype.h>
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#ifdef HAVE_UNISTD_H
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#include <unistd.h>
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#endif
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#if (defined(NETWARE) && !defined(__NOVELL_LIBC__))
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#include <netdb.h>
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#endif
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#include "urldata.h"
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#include "easyif.h" /* for Curl_convert_... prototypes */
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#include "sendf.h"
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#include "rawstr.h"
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#include "curl_base64.h"
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#include "http_ntlm.h"
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#include "url.h"
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#include "memory.h"
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#include "ssluse.h"
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#define _MPRINTF_REPLACE /* use our functions only */
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#include <curl/mprintf.h>
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/* "NTLMSSP" signature is always in ASCII regardless of the platform */
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#define NTLMSSP_SIGNATURE "\x4e\x54\x4c\x4d\x53\x53\x50"
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#ifndef USE_WINDOWS_SSPI
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# ifdef USE_SSLEAY
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# ifdef USE_OPENSSL
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# include <openssl/des.h>
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# include <openssl/md4.h>
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# include <openssl/md5.h>
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# include <openssl/ssl.h>
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# include <openssl/rand.h>
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# else
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# include <des.h>
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# include <md4.h>
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# include <md5.h>
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# include <ssl.h>
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# include <rand.h>
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# endif
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# else
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# error "Can't compile NTLM support without OpenSSL."
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# endif
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#if OPENSSL_VERSION_NUMBER < 0x00907001L
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#define DES_key_schedule des_key_schedule
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#define DES_cblock des_cblock
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#define DES_set_odd_parity des_set_odd_parity
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#define DES_set_key des_set_key
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#define DES_ecb_encrypt des_ecb_encrypt
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/* This is how things were done in the old days */
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#define DESKEY(x) x
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#define DESKEYARG(x) x
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#else
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/* Modern version */
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#define DESKEYARG(x) *x
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#define DESKEY(x) &x
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#endif
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#else
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#include <rpc.h>
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/* Handle of security.dll or secur32.dll, depending on Windows version */
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static HMODULE s_hSecDll = NULL;
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/* Pointer to SSPI dispatch table */
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static PSecurityFunctionTable s_pSecFn = NULL;
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#endif
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/* The last #include file should be: */
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#include "memdebug.h"
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/* Define this to make the type-3 message include the NT response message */
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#define USE_NTRESPONSES 1
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/* Define this to make the type-3 message include the NTLM2Session response
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message, requires USE_NTRESPONSES. */
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#define USE_NTLM2SESSION 1
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#ifndef USE_WINDOWS_SSPI
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/* this function converts from the little endian format used in the incoming
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package to whatever endian format we're using natively */
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static unsigned int readint_le(unsigned char *buf) /* must point to a
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4 bytes buffer*/
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{
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return ((unsigned int)buf[0]) | ((unsigned int)buf[1] << 8) |
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((unsigned int)buf[2] << 16) | ((unsigned int)buf[3] << 24);
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}
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#endif
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#if DEBUG_ME
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# define DEBUG_OUT(x) x
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static void print_flags(FILE *handle, unsigned long flags)
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{
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if(flags & NTLMFLAG_NEGOTIATE_UNICODE)
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fprintf(handle, "NTLMFLAG_NEGOTIATE_UNICODE ");
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if(flags & NTLMFLAG_NEGOTIATE_OEM)
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fprintf(handle, "NTLMFLAG_NEGOTIATE_OEM ");
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if(flags & NTLMFLAG_REQUEST_TARGET)
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fprintf(handle, "NTLMFLAG_REQUEST_TARGET ");
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if(flags & (1<<3))
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fprintf(handle, "NTLMFLAG_UNKNOWN_3 ");
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if(flags & NTLMFLAG_NEGOTIATE_SIGN)
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fprintf(handle, "NTLMFLAG_NEGOTIATE_SIGN ");
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if(flags & NTLMFLAG_NEGOTIATE_SEAL)
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fprintf(handle, "NTLMFLAG_NEGOTIATE_SEAL ");
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if(flags & NTLMFLAG_NEGOTIATE_DATAGRAM_STYLE)
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fprintf(handle, "NTLMFLAG_NEGOTIATE_DATAGRAM_STYLE ");
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if(flags & NTLMFLAG_NEGOTIATE_LM_KEY)
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fprintf(handle, "NTLMFLAG_NEGOTIATE_LM_KEY ");
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if(flags & NTLMFLAG_NEGOTIATE_NETWARE)
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fprintf(handle, "NTLMFLAG_NEGOTIATE_NETWARE ");
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if(flags & NTLMFLAG_NEGOTIATE_NTLM_KEY)
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fprintf(handle, "NTLMFLAG_NEGOTIATE_NTLM_KEY ");
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if(flags & (1<<10))
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fprintf(handle, "NTLMFLAG_UNKNOWN_10 ");
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if(flags & NTLMFLAG_NEGOTIATE_ANONYMOUS)
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fprintf(handle, "NTLMFLAG_NEGOTIATE_ANONYMOUS ");
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if(flags & NTLMFLAG_NEGOTIATE_DOMAIN_SUPPLIED)
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fprintf(handle, "NTLMFLAG_NEGOTIATE_DOMAIN_SUPPLIED ");
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if(flags & NTLMFLAG_NEGOTIATE_WORKSTATION_SUPPLIED)
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fprintf(handle, "NTLMFLAG_NEGOTIATE_WORKSTATION_SUPPLIED ");
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if(flags & NTLMFLAG_NEGOTIATE_LOCAL_CALL)
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fprintf(handle, "NTLMFLAG_NEGOTIATE_LOCAL_CALL ");
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if(flags & NTLMFLAG_NEGOTIATE_ALWAYS_SIGN)
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fprintf(handle, "NTLMFLAG_NEGOTIATE_ALWAYS_SIGN ");
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if(flags & NTLMFLAG_TARGET_TYPE_DOMAIN)
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fprintf(handle, "NTLMFLAG_TARGET_TYPE_DOMAIN ");
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if(flags & NTLMFLAG_TARGET_TYPE_SERVER)
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fprintf(handle, "NTLMFLAG_TARGET_TYPE_SERVER ");
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if(flags & NTLMFLAG_TARGET_TYPE_SHARE)
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fprintf(handle, "NTLMFLAG_TARGET_TYPE_SHARE ");
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if(flags & NTLMFLAG_NEGOTIATE_NTLM2_KEY)
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fprintf(handle, "NTLMFLAG_NEGOTIATE_NTLM2_KEY ");
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if(flags & NTLMFLAG_REQUEST_INIT_RESPONSE)
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fprintf(handle, "NTLMFLAG_REQUEST_INIT_RESPONSE ");
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if(flags & NTLMFLAG_REQUEST_ACCEPT_RESPONSE)
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fprintf(handle, "NTLMFLAG_REQUEST_ACCEPT_RESPONSE ");
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if(flags & NTLMFLAG_REQUEST_NONNT_SESSION_KEY)
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fprintf(handle, "NTLMFLAG_REQUEST_NONNT_SESSION_KEY ");
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if(flags & NTLMFLAG_NEGOTIATE_TARGET_INFO)
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fprintf(handle, "NTLMFLAG_NEGOTIATE_TARGET_INFO ");
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if(flags & (1<<24))
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fprintf(handle, "NTLMFLAG_UNKNOWN_24 ");
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if(flags & (1<<25))
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fprintf(handle, "NTLMFLAG_UNKNOWN_25 ");
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if(flags & (1<<26))
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fprintf(handle, "NTLMFLAG_UNKNOWN_26 ");
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if(flags & (1<<27))
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fprintf(handle, "NTLMFLAG_UNKNOWN_27 ");
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if(flags & (1<<28))
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fprintf(handle, "NTLMFLAG_UNKNOWN_28 ");
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if(flags & NTLMFLAG_NEGOTIATE_128)
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fprintf(handle, "NTLMFLAG_NEGOTIATE_128 ");
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if(flags & NTLMFLAG_NEGOTIATE_KEY_EXCHANGE)
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fprintf(handle, "NTLMFLAG_NEGOTIATE_KEY_EXCHANGE ");
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if(flags & NTLMFLAG_NEGOTIATE_56)
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fprintf(handle, "NTLMFLAG_NEGOTIATE_56 ");
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}
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static void print_hex(FILE *handle, const char *buf, size_t len)
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{
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const char *p = buf;
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fprintf(stderr, "0x");
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while(len-- > 0)
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fprintf(stderr, "%02.2x", (unsigned int)*p++);
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}
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#else
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# define DEBUG_OUT(x)
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#endif
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/*
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(*) = A "security buffer" is a triplet consisting of two shorts and one
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long:
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1. a 'short' containing the length of the buffer in bytes
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2. a 'short' containing the allocated space for the buffer in bytes
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3. a 'long' containing the offset to the start of the buffer from the
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beginning of the NTLM message, in bytes.
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*/
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CURLntlm Curl_input_ntlm(struct connectdata *conn,
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bool proxy, /* if proxy or not */
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const char *header) /* rest of the www-authenticate:
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header */
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{
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/* point to the correct struct with this */
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struct ntlmdata *ntlm;
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#ifndef USE_WINDOWS_SSPI
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static const char type2_marker[] = { 0x02, 0x00, 0x00, 0x00 };
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#endif
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ntlm = proxy?&conn->proxyntlm:&conn->ntlm;
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/* skip initial whitespaces */
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while(*header && ISSPACE(*header))
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header++;
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if(checkprefix("NTLM", header)) {
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header += strlen("NTLM");
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while(*header && ISSPACE(*header))
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header++;
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if(*header) {
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/* We got a type-2 message here:
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Index Description Content
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0 NTLMSSP Signature Null-terminated ASCII "NTLMSSP"
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(0x4e544c4d53535000)
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8 NTLM Message Type long (0x02000000)
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12 Target Name security buffer(*)
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20 Flags long
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24 Challenge 8 bytes
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(32) Context (optional) 8 bytes (two consecutive longs)
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(40) Target Information (optional) security buffer(*)
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32 (48) start of data block
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*/
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size_t size;
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unsigned char *buffer;
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size = Curl_base64_decode(header, &buffer);
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if(!buffer)
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return CURLNTLM_BAD;
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ntlm->state = NTLMSTATE_TYPE2; /* we got a type-2 */
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#ifdef USE_WINDOWS_SSPI
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ntlm->type_2 = malloc(size+1);
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if(ntlm->type_2 == NULL) {
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free(buffer);
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return CURLE_OUT_OF_MEMORY;
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}
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ntlm->n_type_2 = size;
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memcpy(ntlm->type_2, buffer, size);
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#else
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ntlm->flags = 0;
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if((size < 32) ||
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(memcmp(buffer, NTLMSSP_SIGNATURE, 8) != 0) ||
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(memcmp(buffer+8, type2_marker, sizeof(type2_marker)) != 0)) {
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/* This was not a good enough type-2 message */
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free(buffer);
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return CURLNTLM_BAD;
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}
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ntlm->flags = readint_le(&buffer[20]);
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memcpy(ntlm->nonce, &buffer[24], 8);
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DEBUG_OUT({
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fprintf(stderr, "**** TYPE2 header flags=0x%08.8lx ", ntlm->flags);
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print_flags(stderr, ntlm->flags);
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fprintf(stderr, "\n nonce=");
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print_hex(stderr, (char *)ntlm->nonce, 8);
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fprintf(stderr, "\n****\n");
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fprintf(stderr, "**** Header %s\n ", header);
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});
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free(buffer);
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#endif
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}
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else {
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if(ntlm->state >= NTLMSTATE_TYPE1)
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return CURLNTLM_BAD;
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ntlm->state = NTLMSTATE_TYPE1; /* we should sent away a type-1 */
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}
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}
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return CURLNTLM_FINE;
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}
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#ifndef USE_WINDOWS_SSPI
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/*
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* Turns a 56 bit key into the 64 bit, odd parity key and sets the key. The
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* key schedule ks is also set.
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*/
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static void setup_des_key(unsigned char *key_56,
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DES_key_schedule DESKEYARG(ks))
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{
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DES_cblock key;
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key[0] = key_56[0];
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key[1] = (unsigned char)(((key_56[0] << 7) & 0xFF) | (key_56[1] >> 1));
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key[2] = (unsigned char)(((key_56[1] << 6) & 0xFF) | (key_56[2] >> 2));
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key[3] = (unsigned char)(((key_56[2] << 5) & 0xFF) | (key_56[3] >> 3));
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key[4] = (unsigned char)(((key_56[3] << 4) & 0xFF) | (key_56[4] >> 4));
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key[5] = (unsigned char)(((key_56[4] << 3) & 0xFF) | (key_56[5] >> 5));
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key[6] = (unsigned char)(((key_56[5] << 2) & 0xFF) | (key_56[6] >> 6));
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key[7] = (unsigned char) ((key_56[6] << 1) & 0xFF);
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DES_set_odd_parity(&key);
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DES_set_key(&key, ks);
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}
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/*
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* takes a 21 byte array and treats it as 3 56-bit DES keys. The
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* 8 byte plaintext is encrypted with each key and the resulting 24
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* bytes are stored in the results array.
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*/
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static void lm_resp(unsigned char *keys,
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unsigned char *plaintext,
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unsigned char *results)
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{
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DES_key_schedule ks;
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setup_des_key(keys, DESKEY(ks));
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DES_ecb_encrypt((DES_cblock*) plaintext, (DES_cblock*) results,
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DESKEY(ks), DES_ENCRYPT);
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setup_des_key(keys+7, DESKEY(ks));
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DES_ecb_encrypt((DES_cblock*) plaintext, (DES_cblock*) (results+8),
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DESKEY(ks), DES_ENCRYPT);
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setup_des_key(keys+14, DESKEY(ks));
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DES_ecb_encrypt((DES_cblock*) plaintext, (DES_cblock*) (results+16),
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DESKEY(ks), DES_ENCRYPT);
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}
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/*
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* Set up lanmanager hashed password
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*/
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static void mk_lm_hash(struct SessionHandle *data,
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const char *password,
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unsigned char *lmbuffer /* 21 bytes */)
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{
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unsigned char pw[14];
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static const unsigned char magic[] = {
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0x4B, 0x47, 0x53, 0x21, 0x40, 0x23, 0x24, 0x25 /* i.e. KGS!@#$% */
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};
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unsigned int i;
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size_t len = strlen(password);
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if(len > 14)
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len = 14;
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for (i=0; i<len; i++)
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pw[i] = (unsigned char)toupper(password[i]);
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for (; i<14; i++)
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pw[i] = 0;
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#ifdef CURL_DOES_CONVERSIONS
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/*
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* The LanManager hashed password needs to be created using the
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* password in the network encoding not the host encoding.
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*/
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if(data)
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Curl_convert_to_network(data, (char *)pw, 14);
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#else
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(void)data;
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#endif
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{
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/* Create LanManager hashed password. */
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DES_key_schedule ks;
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setup_des_key(pw, DESKEY(ks));
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DES_ecb_encrypt((DES_cblock *)magic, (DES_cblock *)lmbuffer,
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DESKEY(ks), DES_ENCRYPT);
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setup_des_key(pw+7, DESKEY(ks));
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DES_ecb_encrypt((DES_cblock *)magic, (DES_cblock *)(lmbuffer+8),
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DESKEY(ks), DES_ENCRYPT);
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memset(lmbuffer + 16, 0, 21 - 16);
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}
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}
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#if USE_NTRESPONSES
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static void ascii_to_unicode_le(unsigned char *dest, const char *src,
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size_t srclen)
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{
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size_t i;
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for (i=0; i<srclen; i++) {
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dest[2*i] = (unsigned char)src[i];
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dest[2*i+1] = '\0';
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}
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}
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/*
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* Set up nt hashed passwords
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*/
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static CURLcode mk_nt_hash(struct SessionHandle *data,
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const char *password,
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unsigned char *ntbuffer /* 21 bytes */)
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{
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size_t len = strlen(password);
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unsigned char *pw = malloc(len*2);
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if(!pw)
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return CURLE_OUT_OF_MEMORY;
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ascii_to_unicode_le(pw, password, len);
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#ifdef CURL_DOES_CONVERSIONS
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/*
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* The NT hashed password needs to be created using the
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* password in the network encoding not the host encoding.
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*/
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if(data)
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Curl_convert_to_network(data, (char *)pw, len*2);
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#else
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(void)data;
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#endif
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{
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/* Create NT hashed password. */
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MD4_CTX MD4pw;
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MD4_Init(&MD4pw);
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MD4_Update(&MD4pw, pw, 2*len);
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MD4_Final(ntbuffer, &MD4pw);
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memset(ntbuffer + 16, 0, 21 - 16);
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}
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free(pw);
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return CURLE_OK;
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}
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#endif
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#endif
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#ifdef USE_WINDOWS_SSPI
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static void
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ntlm_sspi_cleanup(struct ntlmdata *ntlm)
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{
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if(ntlm->type_2) {
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free(ntlm->type_2);
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ntlm->type_2 = NULL;
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}
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if(ntlm->has_handles) {
|
|
s_pSecFn->DeleteSecurityContext(&ntlm->c_handle);
|
|
s_pSecFn->FreeCredentialsHandle(&ntlm->handle);
|
|
ntlm->has_handles = 0;
|
|
}
|
|
if(ntlm->p_identity) {
|
|
if(ntlm->identity.User) free(ntlm->identity.User);
|
|
if(ntlm->identity.Password) free(ntlm->identity.Password);
|
|
if(ntlm->identity.Domain) free(ntlm->identity.Domain);
|
|
ntlm->p_identity = NULL;
|
|
}
|
|
}
|
|
|
|
#endif
|
|
|
|
#define SHORTPAIR(x) ((x) & 0xff), (((x) >> 8) & 0xff)
|
|
#define LONGQUARTET(x) ((x) & 0xff), (((x) >> 8)&0xff), \
|
|
(((x) >>16)&0xff), (((x)>>24) & 0xff)
|
|
|
|
#define HOSTNAME_MAX 1024
|
|
|
|
/* this is for creating ntlm header output */
|
|
CURLcode Curl_output_ntlm(struct connectdata *conn,
|
|
bool proxy)
|
|
{
|
|
const char *domain=""; /* empty */
|
|
char host [HOSTNAME_MAX+ 1] = ""; /* empty */
|
|
#ifndef USE_WINDOWS_SSPI
|
|
size_t domlen = strlen(domain);
|
|
size_t hostlen = strlen(host);
|
|
size_t hostoff; /* host name offset */
|
|
size_t domoff; /* domain name offset */
|
|
#endif
|
|
size_t size;
|
|
char *base64=NULL;
|
|
unsigned char ntlmbuf[1024]; /* enough, unless the user+host+domain is very
|
|
long */
|
|
|
|
/* point to the address of the pointer that holds the string to sent to the
|
|
server, which is for a plain host or for a HTTP proxy */
|
|
char **allocuserpwd;
|
|
|
|
/* point to the name and password for this */
|
|
const char *userp;
|
|
const char *passwdp;
|
|
/* point to the correct struct with this */
|
|
struct ntlmdata *ntlm;
|
|
struct auth *authp;
|
|
|
|
DEBUGASSERT(conn);
|
|
DEBUGASSERT(conn->data);
|
|
|
|
if(proxy) {
|
|
allocuserpwd = &conn->allocptr.proxyuserpwd;
|
|
userp = conn->proxyuser;
|
|
passwdp = conn->proxypasswd;
|
|
ntlm = &conn->proxyntlm;
|
|
authp = &conn->data->state.authproxy;
|
|
}
|
|
else {
|
|
allocuserpwd = &conn->allocptr.userpwd;
|
|
userp = conn->user;
|
|
passwdp = conn->passwd;
|
|
ntlm = &conn->ntlm;
|
|
authp = &conn->data->state.authhost;
|
|
}
|
|
authp->done = FALSE;
|
|
|
|
/* not set means empty */
|
|
if(!userp)
|
|
userp="";
|
|
|
|
if(!passwdp)
|
|
passwdp="";
|
|
|
|
#ifdef USE_WINDOWS_SSPI
|
|
if (s_hSecDll == NULL) {
|
|
/* not thread safe and leaks - use curl_global_init() to avoid */
|
|
CURLcode err = Curl_ntlm_global_init();
|
|
if (s_hSecDll == NULL)
|
|
return err;
|
|
}
|
|
#endif
|
|
|
|
switch(ntlm->state) {
|
|
case NTLMSTATE_TYPE1:
|
|
default: /* for the weird cases we (re)start here */
|
|
#ifdef USE_WINDOWS_SSPI
|
|
{
|
|
SecBuffer buf;
|
|
SecBufferDesc desc;
|
|
SECURITY_STATUS status;
|
|
ULONG attrs;
|
|
const char *user;
|
|
int domlen;
|
|
TimeStamp tsDummy; /* For Windows 9x compatibility of SPPI calls */
|
|
|
|
ntlm_sspi_cleanup(ntlm);
|
|
|
|
user = strchr(userp, '\\');
|
|
if(!user)
|
|
user = strchr(userp, '/');
|
|
|
|
if(user) {
|
|
domain = userp;
|
|
domlen = user - userp;
|
|
user++;
|
|
}
|
|
else {
|
|
user = userp;
|
|
domain = "";
|
|
domlen = 0;
|
|
}
|
|
|
|
if(user && *user) {
|
|
/* note: initialize all of this before doing the mallocs so that
|
|
* it can be cleaned up later without leaking memory.
|
|
*/
|
|
ntlm->p_identity = &ntlm->identity;
|
|
memset(ntlm->p_identity, 0, sizeof(*ntlm->p_identity));
|
|
if((ntlm->identity.User = (unsigned char *)strdup(user)) == NULL)
|
|
return CURLE_OUT_OF_MEMORY;
|
|
ntlm->identity.UserLength = strlen(user);
|
|
if((ntlm->identity.Password = (unsigned char *)strdup(passwdp)) == NULL)
|
|
return CURLE_OUT_OF_MEMORY;
|
|
ntlm->identity.PasswordLength = strlen(passwdp);
|
|
if((ntlm->identity.Domain = malloc(domlen+1)) == NULL)
|
|
return CURLE_OUT_OF_MEMORY;
|
|
strncpy((char *)ntlm->identity.Domain, domain, domlen);
|
|
ntlm->identity.Domain[domlen] = '\0';
|
|
ntlm->identity.DomainLength = domlen;
|
|
ntlm->identity.Flags = SEC_WINNT_AUTH_IDENTITY_ANSI;
|
|
}
|
|
else {
|
|
ntlm->p_identity = NULL;
|
|
}
|
|
|
|
if(s_pSecFn->AcquireCredentialsHandle(
|
|
NULL, (char *)"NTLM", SECPKG_CRED_OUTBOUND, NULL, ntlm->p_identity,
|
|
NULL, NULL, &ntlm->handle, &tsDummy
|
|
) != SEC_E_OK) {
|
|
return CURLE_OUT_OF_MEMORY;
|
|
}
|
|
|
|
desc.ulVersion = SECBUFFER_VERSION;
|
|
desc.cBuffers = 1;
|
|
desc.pBuffers = &buf;
|
|
buf.cbBuffer = sizeof(ntlmbuf);
|
|
buf.BufferType = SECBUFFER_TOKEN;
|
|
buf.pvBuffer = ntlmbuf;
|
|
|
|
status = s_pSecFn->InitializeSecurityContext(&ntlm->handle, NULL,
|
|
(char *) host,
|
|
ISC_REQ_CONFIDENTIALITY |
|
|
ISC_REQ_REPLAY_DETECT |
|
|
ISC_REQ_CONNECTION,
|
|
0, SECURITY_NETWORK_DREP,
|
|
NULL, 0,
|
|
&ntlm->c_handle, &desc,
|
|
&attrs, &tsDummy);
|
|
|
|
if(status == SEC_I_COMPLETE_AND_CONTINUE ||
|
|
status == SEC_I_CONTINUE_NEEDED) {
|
|
s_pSecFn->CompleteAuthToken(&ntlm->c_handle, &desc);
|
|
}
|
|
else if(status != SEC_E_OK) {
|
|
s_pSecFn->FreeCredentialsHandle(&ntlm->handle);
|
|
return CURLE_RECV_ERROR;
|
|
}
|
|
|
|
ntlm->has_handles = 1;
|
|
size = buf.cbBuffer;
|
|
}
|
|
#else
|
|
hostoff = 0;
|
|
domoff = hostoff + hostlen; /* This is 0: remember that host and domain
|
|
are empty */
|
|
|
|
/* Create and send a type-1 message:
|
|
|
|
Index Description Content
|
|
0 NTLMSSP Signature Null-terminated ASCII "NTLMSSP"
|
|
(0x4e544c4d53535000)
|
|
8 NTLM Message Type long (0x01000000)
|
|
12 Flags long
|
|
16 Supplied Domain security buffer(*)
|
|
24 Supplied Workstation security buffer(*)
|
|
32 start of data block
|
|
|
|
*/
|
|
#if USE_NTLM2SESSION
|
|
#define NTLM2FLAG NTLMFLAG_NEGOTIATE_NTLM2_KEY
|
|
#else
|
|
#define NTLM2FLAG 0
|
|
#endif
|
|
snprintf((char *)ntlmbuf, sizeof(ntlmbuf), NTLMSSP_SIGNATURE "%c"
|
|
"\x01%c%c%c" /* 32-bit type = 1 */
|
|
"%c%c%c%c" /* 32-bit NTLM flag field */
|
|
"%c%c" /* domain length */
|
|
"%c%c" /* domain allocated space */
|
|
"%c%c" /* domain name offset */
|
|
"%c%c" /* 2 zeroes */
|
|
"%c%c" /* host length */
|
|
"%c%c" /* host allocated space */
|
|
"%c%c" /* host name offset */
|
|
"%c%c" /* 2 zeroes */
|
|
"%s" /* host name */
|
|
"%s", /* domain string */
|
|
0, /* trailing zero */
|
|
0,0,0, /* part of type-1 long */
|
|
|
|
LONGQUARTET(
|
|
NTLMFLAG_NEGOTIATE_OEM|
|
|
NTLMFLAG_REQUEST_TARGET|
|
|
NTLMFLAG_NEGOTIATE_NTLM_KEY|
|
|
NTLM2FLAG|
|
|
NTLMFLAG_NEGOTIATE_ALWAYS_SIGN
|
|
),
|
|
SHORTPAIR(domlen),
|
|
SHORTPAIR(domlen),
|
|
SHORTPAIR(domoff),
|
|
0,0,
|
|
SHORTPAIR(hostlen),
|
|
SHORTPAIR(hostlen),
|
|
SHORTPAIR(hostoff),
|
|
0,0,
|
|
host /* this is empty */, domain /* this is empty */);
|
|
|
|
/* initial packet length */
|
|
size = 32 + hostlen + domlen;
|
|
#endif
|
|
|
|
DEBUG_OUT({
|
|
fprintf(stderr, "**** TYPE1 header flags=0x%02.2x%02.2x%02.2x%02.2x 0x%08.8x ",
|
|
LONGQUARTET(NTLMFLAG_NEGOTIATE_OEM|
|
|
NTLMFLAG_REQUEST_TARGET|
|
|
NTLMFLAG_NEGOTIATE_NTLM_KEY|
|
|
NTLM2FLAG|
|
|
NTLMFLAG_NEGOTIATE_ALWAYS_SIGN),
|
|
NTLMFLAG_NEGOTIATE_OEM|
|
|
NTLMFLAG_REQUEST_TARGET|
|
|
NTLMFLAG_NEGOTIATE_NTLM_KEY|
|
|
NTLM2FLAG|
|
|
NTLMFLAG_NEGOTIATE_ALWAYS_SIGN);
|
|
print_flags(stderr,
|
|
NTLMFLAG_NEGOTIATE_OEM|
|
|
NTLMFLAG_REQUEST_TARGET|
|
|
NTLMFLAG_NEGOTIATE_NTLM_KEY|
|
|
NTLM2FLAG|
|
|
NTLMFLAG_NEGOTIATE_ALWAYS_SIGN);
|
|
fprintf(stderr, "\n****\n");
|
|
});
|
|
|
|
/* now size is the size of the base64 encoded package size */
|
|
size = Curl_base64_encode(NULL, (char *)ntlmbuf, size, &base64);
|
|
|
|
if(size >0 ) {
|
|
Curl_safefree(*allocuserpwd);
|
|
*allocuserpwd = aprintf("%sAuthorization: NTLM %s\r\n",
|
|
proxy?"Proxy-":"",
|
|
base64);
|
|
DEBUG_OUT(fprintf(stderr, "**** Header %s\n ", *allocuserpwd));
|
|
free(base64);
|
|
}
|
|
else
|
|
return CURLE_OUT_OF_MEMORY; /* FIX TODO */
|
|
|
|
break;
|
|
|
|
case NTLMSTATE_TYPE2:
|
|
/* We received the type-2 message already, create a type-3 message:
|
|
|
|
Index Description Content
|
|
0 NTLMSSP Signature Null-terminated ASCII "NTLMSSP"
|
|
(0x4e544c4d53535000)
|
|
8 NTLM Message Type long (0x03000000)
|
|
12 LM/LMv2 Response security buffer(*)
|
|
20 NTLM/NTLMv2 Response security buffer(*)
|
|
28 Domain Name security buffer(*)
|
|
36 User Name security buffer(*)
|
|
44 Workstation Name security buffer(*)
|
|
(52) Session Key (optional) security buffer(*)
|
|
(60) Flags (optional) long
|
|
52 (64) start of data block
|
|
|
|
*/
|
|
|
|
{
|
|
#ifdef USE_WINDOWS_SSPI
|
|
SecBuffer type_2, type_3;
|
|
SecBufferDesc type_2_desc, type_3_desc;
|
|
SECURITY_STATUS status;
|
|
ULONG attrs;
|
|
TimeStamp tsDummy; /* For Windows 9x compatibility of SPPI calls */
|
|
|
|
type_2_desc.ulVersion = type_3_desc.ulVersion = SECBUFFER_VERSION;
|
|
type_2_desc.cBuffers = type_3_desc.cBuffers = 1;
|
|
type_2_desc.pBuffers = &type_2;
|
|
type_3_desc.pBuffers = &type_3;
|
|
|
|
type_2.BufferType = SECBUFFER_TOKEN;
|
|
type_2.pvBuffer = ntlm->type_2;
|
|
type_2.cbBuffer = ntlm->n_type_2;
|
|
type_3.BufferType = SECBUFFER_TOKEN;
|
|
type_3.pvBuffer = ntlmbuf;
|
|
type_3.cbBuffer = sizeof(ntlmbuf);
|
|
|
|
status = s_pSecFn->InitializeSecurityContext(&ntlm->handle, &ntlm->c_handle,
|
|
(char *) host,
|
|
ISC_REQ_CONFIDENTIALITY |
|
|
ISC_REQ_REPLAY_DETECT |
|
|
ISC_REQ_CONNECTION,
|
|
0, SECURITY_NETWORK_DREP, &type_2_desc,
|
|
0, &ntlm->c_handle, &type_3_desc,
|
|
&attrs, &tsDummy);
|
|
|
|
if(status != SEC_E_OK)
|
|
return CURLE_RECV_ERROR;
|
|
|
|
size = type_3.cbBuffer;
|
|
|
|
ntlm_sspi_cleanup(ntlm);
|
|
|
|
#else
|
|
int lmrespoff;
|
|
unsigned char lmresp[24]; /* fixed-size */
|
|
#if USE_NTRESPONSES
|
|
int ntrespoff;
|
|
unsigned char ntresp[24]; /* fixed-size */
|
|
#endif
|
|
size_t useroff;
|
|
const char *user;
|
|
size_t userlen;
|
|
|
|
user = strchr(userp, '\\');
|
|
if(!user)
|
|
user = strchr(userp, '/');
|
|
|
|
if(user) {
|
|
domain = userp;
|
|
domlen = (user - domain);
|
|
user++;
|
|
}
|
|
else
|
|
user = userp;
|
|
userlen = strlen(user);
|
|
|
|
if(gethostname(host, HOSTNAME_MAX)) {
|
|
infof(conn->data, "gethostname() failed, continuing without!");
|
|
hostlen = 0;
|
|
}
|
|
else {
|
|
/* If the workstation if configured with a full DNS name (i.e.
|
|
* workstation.somewhere.net) gethostname() returns the fully qualified
|
|
* name, which NTLM doesn't like.
|
|
*/
|
|
char *dot = strchr(host, '.');
|
|
if(dot)
|
|
*dot = '\0';
|
|
hostlen = strlen(host);
|
|
}
|
|
|
|
#if USE_NTLM2SESSION
|
|
/* We don't support NTLM2 if we don't have USE_NTRESPONSES */
|
|
if(ntlm->flags & NTLMFLAG_NEGOTIATE_NTLM2_KEY) {
|
|
unsigned char ntbuffer[0x18];
|
|
unsigned char tmp[0x18];
|
|
unsigned char md5sum[MD5_DIGEST_LENGTH];
|
|
MD5_CTX MD5pw;
|
|
unsigned char entropy[8];
|
|
|
|
/* Need to create 8 bytes random data */
|
|
Curl_ossl_seed(conn->data); /* Initiate the seed if not already done */
|
|
RAND_bytes(entropy,8);
|
|
|
|
/* 8 bytes random data as challenge in lmresp */
|
|
memcpy(lmresp,entropy,8);
|
|
/* Pad with zeros */
|
|
memset(lmresp+8,0,0x10);
|
|
|
|
/* Fill tmp with challenge(nonce?) + entropy */
|
|
memcpy(tmp,&ntlm->nonce[0],8);
|
|
memcpy(tmp+8,entropy,8);
|
|
|
|
MD5_Init(&MD5pw);
|
|
MD5_Update(&MD5pw, tmp, 16);
|
|
MD5_Final(md5sum, &MD5pw);
|
|
/* We shall only use the first 8 bytes of md5sum,
|
|
but the des code in lm_resp only encrypt the first 8 bytes */
|
|
if(mk_nt_hash(conn->data, passwdp, ntbuffer) == CURLE_OUT_OF_MEMORY)
|
|
return CURLE_OUT_OF_MEMORY;
|
|
lm_resp(ntbuffer, md5sum, ntresp);
|
|
|
|
/* End of NTLM2 Session code */
|
|
}
|
|
else {
|
|
#endif
|
|
|
|
#if USE_NTRESPONSES
|
|
unsigned char ntbuffer[0x18];
|
|
#endif
|
|
unsigned char lmbuffer[0x18];
|
|
|
|
#if USE_NTRESPONSES
|
|
if(mk_nt_hash(conn->data, passwdp, ntbuffer) == CURLE_OUT_OF_MEMORY)
|
|
return CURLE_OUT_OF_MEMORY;
|
|
lm_resp(ntbuffer, &ntlm->nonce[0], ntresp);
|
|
#endif
|
|
|
|
mk_lm_hash(conn->data, passwdp, lmbuffer);
|
|
lm_resp(lmbuffer, &ntlm->nonce[0], lmresp);
|
|
/* A safer but less compatible alternative is:
|
|
* lm_resp(ntbuffer, &ntlm->nonce[0], lmresp);
|
|
* See http://davenport.sourceforge.net/ntlm.html#ntlmVersion2 */
|
|
#if USE_NTLM2SESSION
|
|
}
|
|
#endif
|
|
|
|
lmrespoff = 64; /* size of the message header */
|
|
#if USE_NTRESPONSES
|
|
ntrespoff = lmrespoff + 0x18;
|
|
domoff = ntrespoff + 0x18;
|
|
#else
|
|
domoff = lmrespoff + 0x18;
|
|
#endif
|
|
useroff = domoff + domlen;
|
|
hostoff = useroff + userlen;
|
|
|
|
/*
|
|
* In the case the server sets the flag NTLMFLAG_NEGOTIATE_UNICODE, we
|
|
* need to filter it off because libcurl doesn't UNICODE encode the
|
|
* strings it packs into the NTLM authenticate packet.
|
|
*/
|
|
ntlm->flags &= ~NTLMFLAG_NEGOTIATE_UNICODE;
|
|
|
|
/* Create the big type-3 message binary blob */
|
|
size = snprintf((char *)ntlmbuf, sizeof(ntlmbuf),
|
|
NTLMSSP_SIGNATURE "%c"
|
|
"\x03%c%c%c" /* type-3, 32 bits */
|
|
|
|
"%c%c" /* LanManager length */
|
|
"%c%c" /* LanManager allocated space */
|
|
"%c%c" /* LanManager offset */
|
|
"%c%c" /* 2 zeroes */
|
|
|
|
"%c%c" /* NT-response length */
|
|
"%c%c" /* NT-response allocated space */
|
|
"%c%c" /* NT-response offset */
|
|
"%c%c" /* 2 zeroes */
|
|
|
|
"%c%c" /* domain length */
|
|
"%c%c" /* domain allocated space */
|
|
"%c%c" /* domain name offset */
|
|
"%c%c" /* 2 zeroes */
|
|
|
|
"%c%c" /* user length */
|
|
"%c%c" /* user allocated space */
|
|
"%c%c" /* user offset */
|
|
"%c%c" /* 2 zeroes */
|
|
|
|
"%c%c" /* host length */
|
|
"%c%c" /* host allocated space */
|
|
"%c%c" /* host offset */
|
|
"%c%c" /* 2 zeroes */
|
|
|
|
"%c%c" /* session key length (unknown purpose) */
|
|
"%c%c" /* session key allocated space (unknown purpose) */
|
|
"%c%c" /* session key offset (unknown purpose) */
|
|
"%c%c" /* 2 zeroes */
|
|
|
|
"%c%c%c%c" /* flags */
|
|
|
|
/* domain string */
|
|
/* user string */
|
|
/* host string */
|
|
/* LanManager response */
|
|
/* NT response */
|
|
,
|
|
0, /* zero termination */
|
|
0,0,0, /* type-3 long, the 24 upper bits */
|
|
|
|
SHORTPAIR(0x18), /* LanManager response length, twice */
|
|
SHORTPAIR(0x18),
|
|
SHORTPAIR(lmrespoff),
|
|
0x0, 0x0,
|
|
|
|
#if USE_NTRESPONSES
|
|
SHORTPAIR(0x18), /* NT-response length, twice */
|
|
SHORTPAIR(0x18),
|
|
SHORTPAIR(ntrespoff),
|
|
0x0, 0x0,
|
|
#else
|
|
0x0, 0x0,
|
|
0x0, 0x0,
|
|
0x0, 0x0,
|
|
0x0, 0x0,
|
|
#endif
|
|
SHORTPAIR(domlen),
|
|
SHORTPAIR(domlen),
|
|
SHORTPAIR(domoff),
|
|
0x0, 0x0,
|
|
|
|
SHORTPAIR(userlen),
|
|
SHORTPAIR(userlen),
|
|
SHORTPAIR(useroff),
|
|
0x0, 0x0,
|
|
|
|
SHORTPAIR(hostlen),
|
|
SHORTPAIR(hostlen),
|
|
SHORTPAIR(hostoff),
|
|
0x0, 0x0,
|
|
|
|
0x0, 0x0,
|
|
0x0, 0x0,
|
|
0x0, 0x0,
|
|
0x0, 0x0,
|
|
|
|
LONGQUARTET(ntlm->flags));
|
|
DEBUGASSERT(size==64);
|
|
|
|
DEBUGASSERT(size == (size_t)lmrespoff);
|
|
/* We append the binary hashes */
|
|
if(size < (sizeof(ntlmbuf) - 0x18)) {
|
|
memcpy(&ntlmbuf[size], lmresp, 0x18);
|
|
size += 0x18;
|
|
}
|
|
|
|
DEBUG_OUT({
|
|
fprintf(stderr, "**** TYPE3 header lmresp=");
|
|
print_hex(stderr, (char *)&ntlmbuf[lmrespoff], 0x18);
|
|
});
|
|
|
|
#if USE_NTRESPONSES
|
|
if(size < (sizeof(ntlmbuf) - 0x18)) {
|
|
DEBUGASSERT(size == (size_t)ntrespoff);
|
|
memcpy(&ntlmbuf[size], ntresp, 0x18);
|
|
size += 0x18;
|
|
}
|
|
|
|
DEBUG_OUT({
|
|
fprintf(stderr, "\n ntresp=");
|
|
print_hex(stderr, (char *)&ntlmbuf[ntrespoff], 0x18);
|
|
});
|
|
|
|
#endif
|
|
|
|
DEBUG_OUT({
|
|
fprintf(stderr, "\n flags=0x%02.2x%02.2x%02.2x%02.2x 0x%08.8x ",
|
|
LONGQUARTET(ntlm->flags), ntlm->flags);
|
|
print_flags(stderr, ntlm->flags);
|
|
fprintf(stderr, "\n****\n");
|
|
});
|
|
|
|
|
|
/* Make sure that the domain, user and host strings fit in the target
|
|
buffer before we copy them there. */
|
|
if(size + userlen + domlen + hostlen >= sizeof(ntlmbuf)) {
|
|
failf(conn->data, "user + domain + host name too big");
|
|
return CURLE_OUT_OF_MEMORY;
|
|
}
|
|
|
|
DEBUGASSERT(size == domoff);
|
|
memcpy(&ntlmbuf[size], domain, domlen);
|
|
size += domlen;
|
|
|
|
DEBUGASSERT(size == useroff);
|
|
memcpy(&ntlmbuf[size], user, userlen);
|
|
size += userlen;
|
|
|
|
DEBUGASSERT(size == hostoff);
|
|
memcpy(&ntlmbuf[size], host, hostlen);
|
|
size += hostlen;
|
|
|
|
#ifdef CURL_DOES_CONVERSIONS
|
|
/* convert domain, user, and host to ASCII but leave the rest as-is */
|
|
if(CURLE_OK != Curl_convert_to_network(conn->data,
|
|
(char *)&ntlmbuf[domoff],
|
|
size-domoff)) {
|
|
return CURLE_CONV_FAILED;
|
|
}
|
|
#endif /* CURL_DOES_CONVERSIONS */
|
|
|
|
#endif
|
|
|
|
/* convert the binary blob into base64 */
|
|
size = Curl_base64_encode(NULL, (char *)ntlmbuf, size, &base64);
|
|
|
|
if(size >0 ) {
|
|
Curl_safefree(*allocuserpwd);
|
|
*allocuserpwd = aprintf("%sAuthorization: NTLM %s\r\n",
|
|
proxy?"Proxy-":"",
|
|
base64);
|
|
DEBUG_OUT(fprintf(stderr, "**** %s\n ", *allocuserpwd));
|
|
free(base64);
|
|
}
|
|
else
|
|
return CURLE_OUT_OF_MEMORY; /* FIX TODO */
|
|
|
|
ntlm->state = NTLMSTATE_TYPE3; /* we sent a type-3 */
|
|
authp->done = TRUE;
|
|
}
|
|
break;
|
|
|
|
case NTLMSTATE_TYPE3:
|
|
/* connection is already authenticated,
|
|
* don't send a header in future requests */
|
|
if(*allocuserpwd) {
|
|
free(*allocuserpwd);
|
|
*allocuserpwd=NULL;
|
|
}
|
|
authp->done = TRUE;
|
|
break;
|
|
}
|
|
|
|
return CURLE_OK;
|
|
}
|
|
|
|
|
|
void
|
|
Curl_ntlm_cleanup(struct connectdata *conn)
|
|
{
|
|
#ifdef USE_WINDOWS_SSPI
|
|
ntlm_sspi_cleanup(&conn->ntlm);
|
|
ntlm_sspi_cleanup(&conn->proxyntlm);
|
|
#else
|
|
(void)conn;
|
|
#endif
|
|
}
|
|
|
|
#ifdef USE_WINDOWS_SSPI
|
|
CURLcode Curl_ntlm_global_init(void)
|
|
{
|
|
/* If security interface is not yet initialized try to do this */
|
|
if(s_hSecDll == NULL) {
|
|
/* Determine Windows version. Security functions are located in
|
|
* security.dll on WinNT 4.0 and in secur32.dll on Win9x. Win2K and XP
|
|
* contain both these DLLs (security.dll just forwards calls to
|
|
* secur32.dll)
|
|
*/
|
|
OSVERSIONINFO osver;
|
|
osver.dwOSVersionInfoSize = sizeof(osver);
|
|
GetVersionEx(&osver);
|
|
if(osver.dwPlatformId == VER_PLATFORM_WIN32_NT
|
|
&& osver.dwMajorVersion == 4)
|
|
s_hSecDll = LoadLibrary("security.dll");
|
|
else
|
|
s_hSecDll = LoadLibrary("secur32.dll");
|
|
if(s_hSecDll != NULL) {
|
|
INIT_SECURITY_INTERFACE pInitSecurityInterface;
|
|
pInitSecurityInterface =
|
|
(INIT_SECURITY_INTERFACE)GetProcAddress(s_hSecDll,
|
|
"InitSecurityInterfaceA");
|
|
if(pInitSecurityInterface != NULL)
|
|
s_pSecFn = pInitSecurityInterface();
|
|
}
|
|
}
|
|
if(s_pSecFn == NULL)
|
|
return CURLE_RECV_ERROR;
|
|
|
|
return CURLE_OK;
|
|
}
|
|
|
|
void Curl_ntlm_global_cleanup(void)
|
|
{
|
|
if(s_hSecDll != NULL) {
|
|
FreeLibrary(s_hSecDll);
|
|
s_hSecDll = NULL;
|
|
s_pSecFn = NULL;
|
|
}
|
|
}
|
|
#endif
|
|
|
|
#endif /* USE_NTLM */
|
|
#endif /* !CURL_DISABLE_HTTP */
|