872 lines
28 KiB
C
872 lines
28 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 - 2019, 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 https://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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***************************************************************************/
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#include "curl_setup.h"
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#if defined(USE_NTLM) && !defined(USE_WINDOWS_SSPI)
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/*
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* NTLM details:
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*
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* https://davenport.sourceforge.io/ntlm.html
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* https://www.innovation.ch/java/ntlm.html
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*/
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#define DEBUG_ME 0
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#include "urldata.h"
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#include "non-ascii.h"
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#include "sendf.h"
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#include "curl_base64.h"
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#include "curl_ntlm_core.h"
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#include "curl_gethostname.h"
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#include "curl_multibyte.h"
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#include "warnless.h"
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#include "rand.h"
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#include "vtls/vtls.h"
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/* SSL backend-specific #if branches in this file must be kept in the order
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documented in curl_ntlm_core. */
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#if defined(NTLM_NEEDS_NSS_INIT)
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#include "vtls/nssg.h" /* for Curl_nss_force_init() */
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#endif
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#define BUILDING_CURL_NTLM_MSGS_C
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#include "vauth/vauth.h"
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#include "vauth/ntlm.h"
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#include "curl_endian.h"
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#include "curl_printf.h"
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/* The last #include files should be: */
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#include "curl_memory.h"
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#include "memdebug.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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#define SHORTPAIR(x) ((int)((x) & 0xff)), ((int)(((x) >> 8) & 0xff))
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#define LONGQUARTET(x) ((int)((x) & 0xff)), ((int)(((x) >> 8) & 0xff)), \
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((int)(((x) >> 16) & 0xff)), ((int)(((x) >> 24) & 0xff))
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#if DEBUG_ME
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# define DEBUG_OUT(x) x
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static void ntlm_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 ntlm_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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(void) handle;
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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) Curl_nop_stmt
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#endif
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/*
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* ntlm_decode_type2_target()
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*
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* This is used to decode the "target info" in the NTLM type-2 message
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* received.
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*
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* Parameters:
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*
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* data [in] - The session handle.
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* buffer [in] - The decoded type-2 message.
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* size [in] - The input buffer size, at least 32 bytes.
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* ntlm [in/out] - The NTLM data struct being used and modified.
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*
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* Returns CURLE_OK on success.
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*/
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static CURLcode ntlm_decode_type2_target(struct Curl_easy *data,
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unsigned char *buffer,
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size_t size,
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struct ntlmdata *ntlm)
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{
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unsigned short target_info_len = 0;
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unsigned int target_info_offset = 0;
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#if defined(CURL_DISABLE_VERBOSE_STRINGS)
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(void) data;
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#endif
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if(size >= 48) {
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target_info_len = Curl_read16_le(&buffer[40]);
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target_info_offset = Curl_read32_le(&buffer[44]);
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if(target_info_len > 0) {
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if((target_info_offset >= size) ||
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((target_info_offset + target_info_len) > size) ||
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(target_info_offset < 48)) {
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infof(data, "NTLM handshake failure (bad type-2 message). "
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"Target Info Offset Len is set incorrect by the peer\n");
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return CURLE_BAD_CONTENT_ENCODING;
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}
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ntlm->target_info = malloc(target_info_len);
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if(!ntlm->target_info)
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return CURLE_OUT_OF_MEMORY;
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memcpy(ntlm->target_info, &buffer[target_info_offset], target_info_len);
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}
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}
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ntlm->target_info_len = target_info_len;
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return CURLE_OK;
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}
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/*
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NTLM message structure notes:
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A 'short' is a 'network short', a little-endian 16-bit unsigned value.
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A 'long' is a 'network long', a little-endian, 32-bit unsigned value.
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A 'security buffer' represents a triplet used to point to a buffer,
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consisting of two shorts and one long:
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1. A 'short' containing the length of the buffer content 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 in bytes,
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from the beginning of the NTLM message.
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*/
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/*
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* Curl_auth_is_ntlm_supported()
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*
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* This is used to evaluate if NTLM is supported.
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*
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* Parameters: None
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*
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* Returns TRUE as NTLM as handled by libcurl.
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*/
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bool Curl_auth_is_ntlm_supported(void)
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{
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return TRUE;
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}
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/*
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* Curl_auth_decode_ntlm_type2_message()
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*
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* This is used to decode an already encoded NTLM type-2 message. The message
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* is first decoded from a base64 string into a raw NTLM message and checked
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* for validity before the appropriate data for creating a type-3 message is
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* written to the given NTLM data structure.
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*
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* Parameters:
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*
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* data [in] - The session handle.
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* type2msg [in] - The base64 encoded type-2 message.
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* ntlm [in/out] - The NTLM data struct being used and modified.
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*
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* Returns CURLE_OK on success.
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*/
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CURLcode Curl_auth_decode_ntlm_type2_message(struct Curl_easy *data,
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const char *type2msg,
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struct ntlmdata *ntlm)
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{
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static const char type2_marker[] = { 0x02, 0x00, 0x00, 0x00 };
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/* NTLM type-2 message structure:
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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 8 bytes (two consecutive longs) (*)
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(40) Target Information security buffer (*)
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(48) OS Version Structure 8 bytes (*)
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32 (48) (56) Start of data block (*)
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(*) -> Optional
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*/
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CURLcode result = CURLE_OK;
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unsigned char *type2 = NULL;
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size_t type2_len = 0;
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#if defined(NTLM_NEEDS_NSS_INIT)
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/* Make sure the crypto backend is initialized */
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result = Curl_nss_force_init(data);
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if(result)
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return result;
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#elif defined(CURL_DISABLE_VERBOSE_STRINGS)
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(void)data;
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#endif
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/* Decode the base-64 encoded type-2 message */
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if(strlen(type2msg) && *type2msg != '=') {
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result = Curl_base64_decode(type2msg, &type2, &type2_len);
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if(result)
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return result;
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}
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/* Ensure we have a valid type-2 message */
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if(!type2) {
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infof(data, "NTLM handshake failure (empty type-2 message)\n");
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return CURLE_BAD_CONTENT_ENCODING;
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}
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ntlm->flags = 0;
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if((type2_len < 32) ||
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(memcmp(type2, NTLMSSP_SIGNATURE, 8) != 0) ||
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(memcmp(type2 + 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(type2);
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infof(data, "NTLM handshake failure (bad type-2 message)\n");
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return CURLE_BAD_CONTENT_ENCODING;
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}
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ntlm->flags = Curl_read32_le(&type2[20]);
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memcpy(ntlm->nonce, &type2[24], 8);
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if(ntlm->flags & NTLMFLAG_NEGOTIATE_TARGET_INFO) {
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result = ntlm_decode_type2_target(data, type2, type2_len, ntlm);
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if(result) {
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free(type2);
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infof(data, "NTLM handshake failure (bad type-2 message)\n");
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return result;
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}
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}
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DEBUG_OUT({
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fprintf(stderr, "**** TYPE2 header flags=0x%08.8lx ", ntlm->flags);
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ntlm_print_flags(stderr, ntlm->flags);
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fprintf(stderr, "\n nonce=");
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ntlm_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(type2);
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return result;
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}
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/* copy the source to the destination and fill in zeroes in every
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other destination byte! */
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static void unicodecpy(unsigned char *dest, const char *src, size_t length)
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{
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size_t i;
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for(i = 0; i < length; 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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* Curl_auth_create_ntlm_type1_message()
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*
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* This is used to generate an already encoded NTLM type-1 message ready for
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* sending to the recipient using the appropriate compile time crypto API.
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*
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* Parameters:
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*
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* data [in] - The session handle.
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* userp [in] - The user name in the format User or Domain\User.
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* passwdp [in] - The user's password.
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* service [in] - The service type such as http, smtp, pop or imap.
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* host [in] - The host name.
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* ntlm [in/out] - The NTLM data struct being used and modified.
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* outptr [in/out] - The address where a pointer to newly allocated memory
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* holding the result will be stored upon completion.
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* outlen [out] - The length of the output message.
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*
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* Returns CURLE_OK on success.
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*/
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CURLcode Curl_auth_create_ntlm_type1_message(struct Curl_easy *data,
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const char *userp,
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const char *passwdp,
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const char *service,
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const char *hostname,
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struct ntlmdata *ntlm,
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char **outptr, size_t *outlen)
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{
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/* NTLM type-1 message structure:
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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 (0x01000000)
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12 Flags long
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(16) Supplied Domain security buffer (*)
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(24) Supplied Workstation security buffer (*)
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(32) OS Version Structure 8 bytes (*)
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(32) (40) Start of data block (*)
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(*) -> Optional
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*/
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size_t size;
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unsigned char ntlmbuf[NTLM_BUFSIZE];
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const char *host = ""; /* empty */
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const char *domain = ""; /* empty */
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size_t hostlen = 0;
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size_t domlen = 0;
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size_t hostoff = 0;
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size_t domoff = hostoff + hostlen; /* This is 0: remember that host and
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domain are empty */
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(void)userp;
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(void)passwdp;
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(void)service,
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(void)hostname,
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/* Clean up any former leftovers and initialise to defaults */
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Curl_auth_ntlm_cleanup(ntlm);
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#if defined(USE_NTRESPONSES) && defined(USE_NTLM2SESSION)
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#define NTLM2FLAG NTLMFLAG_NEGOTIATE_NTLM2_KEY
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#else
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#define NTLM2FLAG 0
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#endif
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msnprintf((char *)ntlmbuf, NTLM_BUFSIZE,
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NTLMSSP_SIGNATURE "%c"
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"\x01%c%c%c" /* 32-bit type = 1 */
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"%c%c%c%c" /* 32-bit NTLM flag field */
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"%c%c" /* domain length */
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"%c%c" /* domain allocated space */
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"%c%c" /* domain name offset */
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"%c%c" /* 2 zeroes */
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"%c%c" /* host length */
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"%c%c" /* host allocated space */
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"%c%c" /* host name offset */
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"%c%c" /* 2 zeroes */
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"%s" /* host name */
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"%s", /* domain string */
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0, /* trailing zero */
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0, 0, 0, /* part of type-1 long */
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LONGQUARTET(NTLMFLAG_NEGOTIATE_OEM |
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NTLMFLAG_REQUEST_TARGET |
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NTLMFLAG_NEGOTIATE_NTLM_KEY |
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NTLM2FLAG |
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NTLMFLAG_NEGOTIATE_ALWAYS_SIGN),
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SHORTPAIR(domlen),
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SHORTPAIR(domlen),
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SHORTPAIR(domoff),
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0, 0,
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SHORTPAIR(hostlen),
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SHORTPAIR(hostlen),
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SHORTPAIR(hostoff),
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0, 0,
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host, /* this is empty */
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domain /* this is empty */);
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/* Initial packet length */
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size = 32 + hostlen + domlen;
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DEBUG_OUT({
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fprintf(stderr, "* TYPE1 header flags=0x%02.2x%02.2x%02.2x%02.2x "
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"0x%08.8x ",
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LONGQUARTET(NTLMFLAG_NEGOTIATE_OEM |
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NTLMFLAG_REQUEST_TARGET |
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NTLMFLAG_NEGOTIATE_NTLM_KEY |
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NTLM2FLAG |
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NTLMFLAG_NEGOTIATE_ALWAYS_SIGN),
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NTLMFLAG_NEGOTIATE_OEM |
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NTLMFLAG_REQUEST_TARGET |
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NTLMFLAG_NEGOTIATE_NTLM_KEY |
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NTLM2FLAG |
|
|
NTLMFLAG_NEGOTIATE_ALWAYS_SIGN);
|
|
ntlm_print_flags(stderr,
|
|
NTLMFLAG_NEGOTIATE_OEM |
|
|
NTLMFLAG_REQUEST_TARGET |
|
|
NTLMFLAG_NEGOTIATE_NTLM_KEY |
|
|
NTLM2FLAG |
|
|
NTLMFLAG_NEGOTIATE_ALWAYS_SIGN);
|
|
fprintf(stderr, "\n****\n");
|
|
});
|
|
|
|
/* Return with binary blob encoded into base64 */
|
|
return Curl_base64_encode(data, (char *)ntlmbuf, size, outptr, outlen);
|
|
}
|
|
|
|
/*
|
|
* Curl_auth_create_ntlm_type3_message()
|
|
*
|
|
* This is used to generate an already encoded NTLM type-3 message ready for
|
|
* sending to the recipient using the appropriate compile time crypto API.
|
|
*
|
|
* Parameters:
|
|
*
|
|
* data [in] - The session handle.
|
|
* userp [in] - The user name in the format User or Domain\User.
|
|
* passwdp [in] - The user's password.
|
|
* ntlm [in/out] - The NTLM data struct being used and modified.
|
|
* outptr [in/out] - The address where a pointer to newly allocated memory
|
|
* holding the result will be stored upon completion.
|
|
* outlen [out] - The length of the output message.
|
|
*
|
|
* Returns CURLE_OK on success.
|
|
*/
|
|
CURLcode Curl_auth_create_ntlm_type3_message(struct Curl_easy *data,
|
|
const char *userp,
|
|
const char *passwdp,
|
|
struct ntlmdata *ntlm,
|
|
char **outptr, size_t *outlen)
|
|
|
|
{
|
|
/* NTLM type-3 message structure:
|
|
|
|
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 Target Name security buffer
|
|
36 User Name security buffer
|
|
44 Workstation Name security buffer
|
|
(52) Session Key security buffer (*)
|
|
(60) Flags long (*)
|
|
(64) OS Version Structure 8 bytes (*)
|
|
52 (64) (72) Start of data block
|
|
(*) -> Optional
|
|
*/
|
|
|
|
CURLcode result = CURLE_OK;
|
|
size_t size;
|
|
unsigned char ntlmbuf[NTLM_BUFSIZE];
|
|
int lmrespoff;
|
|
unsigned char lmresp[24]; /* fixed-size */
|
|
#ifdef USE_NTRESPONSES
|
|
int ntrespoff;
|
|
unsigned int ntresplen = 24;
|
|
unsigned char ntresp[24]; /* fixed-size */
|
|
unsigned char *ptr_ntresp = &ntresp[0];
|
|
unsigned char *ntlmv2resp = NULL;
|
|
#endif
|
|
bool unicode = (ntlm->flags & NTLMFLAG_NEGOTIATE_UNICODE) ? TRUE : FALSE;
|
|
char host[HOSTNAME_MAX + 1] = "";
|
|
const char *user;
|
|
const char *domain = "";
|
|
size_t hostoff = 0;
|
|
size_t useroff = 0;
|
|
size_t domoff = 0;
|
|
size_t hostlen = 0;
|
|
size_t userlen = 0;
|
|
size_t domlen = 0;
|
|
|
|
user = strchr(userp, '\\');
|
|
if(!user)
|
|
user = strchr(userp, '/');
|
|
|
|
if(user) {
|
|
domain = userp;
|
|
domlen = (user - domain);
|
|
user++;
|
|
}
|
|
else
|
|
user = userp;
|
|
|
|
userlen = strlen(user);
|
|
|
|
/* Get the machine's un-qualified host name as NTLM doesn't like the fully
|
|
qualified domain name */
|
|
if(Curl_gethostname(host, sizeof(host))) {
|
|
infof(data, "gethostname() failed, continuing without!\n");
|
|
hostlen = 0;
|
|
}
|
|
else {
|
|
hostlen = strlen(host);
|
|
}
|
|
|
|
#if defined(USE_NTRESPONSES) && defined(USE_NTLM_V2)
|
|
if(ntlm->flags & NTLMFLAG_NEGOTIATE_NTLM2_KEY) {
|
|
unsigned char ntbuffer[0x18];
|
|
unsigned char entropy[8];
|
|
unsigned char ntlmv2hash[0x18];
|
|
|
|
result = Curl_rand(data, entropy, 8);
|
|
if(result)
|
|
return result;
|
|
|
|
result = Curl_ntlm_core_mk_nt_hash(data, passwdp, ntbuffer);
|
|
if(result)
|
|
return result;
|
|
|
|
result = Curl_ntlm_core_mk_ntlmv2_hash(user, userlen, domain, domlen,
|
|
ntbuffer, ntlmv2hash);
|
|
if(result)
|
|
return result;
|
|
|
|
/* LMv2 response */
|
|
result = Curl_ntlm_core_mk_lmv2_resp(ntlmv2hash, entropy,
|
|
&ntlm->nonce[0], lmresp);
|
|
if(result)
|
|
return result;
|
|
|
|
/* NTLMv2 response */
|
|
result = Curl_ntlm_core_mk_ntlmv2_resp(ntlmv2hash, entropy,
|
|
ntlm, &ntlmv2resp, &ntresplen);
|
|
if(result)
|
|
return result;
|
|
|
|
ptr_ntresp = ntlmv2resp;
|
|
}
|
|
else
|
|
#endif
|
|
|
|
#if defined(USE_NTRESPONSES) && defined(USE_NTLM2SESSION)
|
|
/* We don't support NTLM2 if we don't have USE_NTRESPONSES */
|
|
if(ntlm->flags & NTLMFLAG_NEGOTIATE_NTLM_KEY) {
|
|
unsigned char ntbuffer[0x18];
|
|
unsigned char tmp[0x18];
|
|
unsigned char md5sum[MD5_DIGEST_LENGTH];
|
|
unsigned char entropy[8];
|
|
|
|
/* Need to create 8 bytes random data */
|
|
result = Curl_rand(data, entropy, 8);
|
|
if(result)
|
|
return result;
|
|
|
|
/* 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);
|
|
|
|
result = Curl_ssl_md5sum(tmp, 16, md5sum, MD5_DIGEST_LENGTH);
|
|
if(!result)
|
|
/* We shall only use the first 8 bytes of md5sum, but the des code in
|
|
Curl_ntlm_core_lm_resp only encrypt the first 8 bytes */
|
|
result = Curl_ntlm_core_mk_nt_hash(data, passwdp, ntbuffer);
|
|
if(result)
|
|
return result;
|
|
|
|
Curl_ntlm_core_lm_resp(ntbuffer, md5sum, ntresp);
|
|
|
|
/* End of NTLM2 Session code */
|
|
/* NTLM v2 session security is a misnomer because it is not NTLM v2.
|
|
It is NTLM v1 using the extended session security that is also
|
|
in NTLM v2 */
|
|
}
|
|
else
|
|
#endif
|
|
{
|
|
|
|
#ifdef USE_NTRESPONSES
|
|
unsigned char ntbuffer[0x18];
|
|
#endif
|
|
unsigned char lmbuffer[0x18];
|
|
|
|
#ifdef USE_NTRESPONSES
|
|
result = Curl_ntlm_core_mk_nt_hash(data, passwdp, ntbuffer);
|
|
if(result)
|
|
return result;
|
|
|
|
Curl_ntlm_core_lm_resp(ntbuffer, &ntlm->nonce[0], ntresp);
|
|
#endif
|
|
|
|
result = Curl_ntlm_core_mk_lm_hash(data, passwdp, lmbuffer);
|
|
if(result)
|
|
return result;
|
|
|
|
Curl_ntlm_core_lm_resp(lmbuffer, &ntlm->nonce[0], lmresp);
|
|
|
|
/* A safer but less compatible alternative is:
|
|
* Curl_ntlm_core_lm_resp(ntbuffer, &ntlm->nonce[0], lmresp);
|
|
* See https://davenport.sourceforge.io/ntlm.html#ntlmVersion2 */
|
|
}
|
|
|
|
if(unicode) {
|
|
domlen = domlen * 2;
|
|
userlen = userlen * 2;
|
|
hostlen = hostlen * 2;
|
|
}
|
|
|
|
lmrespoff = 64; /* size of the message header */
|
|
#ifdef USE_NTRESPONSES
|
|
ntrespoff = lmrespoff + 0x18;
|
|
domoff = ntrespoff + ntresplen;
|
|
#else
|
|
domoff = lmrespoff + 0x18;
|
|
#endif
|
|
useroff = domoff + domlen;
|
|
hostoff = useroff + userlen;
|
|
|
|
/* Create the big type-3 message binary blob */
|
|
size = msnprintf((char *)ntlmbuf, NTLM_BUFSIZE,
|
|
NTLMSSP_SIGNATURE "%c"
|
|
"\x03%c%c%c" /* 32-bit type = 3 */
|
|
|
|
"%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,
|
|
|
|
#ifdef USE_NTRESPONSES
|
|
SHORTPAIR(ntresplen), /* NT-response length, twice */
|
|
SHORTPAIR(ntresplen),
|
|
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 < (NTLM_BUFSIZE - 0x18)) {
|
|
memcpy(&ntlmbuf[size], lmresp, 0x18);
|
|
size += 0x18;
|
|
}
|
|
|
|
DEBUG_OUT({
|
|
fprintf(stderr, "**** TYPE3 header lmresp=");
|
|
ntlm_print_hex(stderr, (char *)&ntlmbuf[lmrespoff], 0x18);
|
|
});
|
|
|
|
#ifdef USE_NTRESPONSES
|
|
/* ntresplen + size should not be risking an integer overflow here */
|
|
if(ntresplen + size > sizeof(ntlmbuf)) {
|
|
failf(data, "incoming NTLM message too big");
|
|
return CURLE_OUT_OF_MEMORY;
|
|
}
|
|
DEBUGASSERT(size == (size_t)ntrespoff);
|
|
memcpy(&ntlmbuf[size], ptr_ntresp, ntresplen);
|
|
size += ntresplen;
|
|
|
|
DEBUG_OUT({
|
|
fprintf(stderr, "\n ntresp=");
|
|
ntlm_print_hex(stderr, (char *)&ntlmbuf[ntrespoff], ntresplen);
|
|
});
|
|
|
|
free(ntlmv2resp);/* Free the dynamic buffer allocated for NTLMv2 */
|
|
|
|
#endif
|
|
|
|
DEBUG_OUT({
|
|
fprintf(stderr, "\n flags=0x%02.2x%02.2x%02.2x%02.2x 0x%08.8x ",
|
|
LONGQUARTET(ntlm->flags), ntlm->flags);
|
|
ntlm_print_flags(stderr, ntlm->flags);
|
|
fprintf(stderr, "\n****\n");
|
|
});
|
|
|
|
/* Make sure that the domain, user and host strings fit in the
|
|
buffer before we copy them there. */
|
|
if(size + userlen + domlen + hostlen >= NTLM_BUFSIZE) {
|
|
failf(data, "user + domain + host name too big");
|
|
return CURLE_OUT_OF_MEMORY;
|
|
}
|
|
|
|
DEBUGASSERT(size == domoff);
|
|
if(unicode)
|
|
unicodecpy(&ntlmbuf[size], domain, domlen / 2);
|
|
else
|
|
memcpy(&ntlmbuf[size], domain, domlen);
|
|
|
|
size += domlen;
|
|
|
|
DEBUGASSERT(size == useroff);
|
|
if(unicode)
|
|
unicodecpy(&ntlmbuf[size], user, userlen / 2);
|
|
else
|
|
memcpy(&ntlmbuf[size], user, userlen);
|
|
|
|
size += userlen;
|
|
|
|
DEBUGASSERT(size == hostoff);
|
|
if(unicode)
|
|
unicodecpy(&ntlmbuf[size], host, hostlen / 2);
|
|
else
|
|
memcpy(&ntlmbuf[size], host, hostlen);
|
|
|
|
size += hostlen;
|
|
|
|
/* Convert domain, user, and host to ASCII but leave the rest as-is */
|
|
result = Curl_convert_to_network(data, (char *)&ntlmbuf[domoff],
|
|
size - domoff);
|
|
if(result)
|
|
return CURLE_CONV_FAILED;
|
|
|
|
/* Return with binary blob encoded into base64 */
|
|
result = Curl_base64_encode(data, (char *)ntlmbuf, size, outptr, outlen);
|
|
|
|
Curl_auth_ntlm_cleanup(ntlm);
|
|
|
|
return result;
|
|
}
|
|
|
|
/*
|
|
* Curl_auth_ntlm_cleanup()
|
|
*
|
|
* This is used to clean up the NTLM specific data.
|
|
*
|
|
* Parameters:
|
|
*
|
|
* ntlm [in/out] - The NTLM data struct being cleaned up.
|
|
*
|
|
*/
|
|
void Curl_auth_ntlm_cleanup(struct ntlmdata *ntlm)
|
|
{
|
|
/* Free the target info */
|
|
Curl_safefree(ntlm->target_info);
|
|
|
|
/* Reset any variables */
|
|
ntlm->target_info_len = 0;
|
|
}
|
|
|
|
#endif /* USE_NTLM && !USE_WINDOWS_SSPI */
|