781 lines
25 KiB
C
781 lines
25 KiB
C
/***************************************************************************
|
|
* _ _ ____ _
|
|
* Project ___| | | | _ \| |
|
|
* / __| | | | |_) | |
|
|
* | (__| |_| | _ <| |___
|
|
* \___|\___/|_| \_\_____|
|
|
*
|
|
* Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.
|
|
*
|
|
* This software is licensed as described in the file COPYING, which
|
|
* you should have received as part of this distribution. The terms
|
|
* are also available at https://curl.se/docs/copyright.html.
|
|
*
|
|
* You may opt to use, copy, modify, merge, publish, distribute and/or sell
|
|
* copies of the Software, and permit persons to whom the Software is
|
|
* furnished to do so, under the terms of the COPYING file.
|
|
*
|
|
* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
|
|
* KIND, either express or implied.
|
|
*
|
|
* SPDX-License-Identifier: curl
|
|
*
|
|
***************************************************************************/
|
|
|
|
#include "curl_setup.h"
|
|
|
|
#if defined(USE_NTLM) && !defined(USE_WINDOWS_SSPI)
|
|
|
|
/*
|
|
* NTLM details:
|
|
*
|
|
* https://davenport.sourceforge.net/ntlm.html
|
|
* https://www.innovation.ch/java/ntlm.html
|
|
*/
|
|
|
|
#define DEBUG_ME 0
|
|
|
|
#include "urldata.h"
|
|
#include "sendf.h"
|
|
#include "curl_ntlm_core.h"
|
|
#include "curl_gethostname.h"
|
|
#include "curl_multibyte.h"
|
|
#include "curl_md5.h"
|
|
#include "warnless.h"
|
|
#include "rand.h"
|
|
#include "vtls/vtls.h"
|
|
|
|
#define BUILDING_CURL_NTLM_MSGS_C
|
|
#include "vauth/vauth.h"
|
|
#include "vauth/ntlm.h"
|
|
#include "curl_endian.h"
|
|
#include "curl_printf.h"
|
|
|
|
/* The last #include files should be: */
|
|
#include "curl_memory.h"
|
|
#include "memdebug.h"
|
|
|
|
/* "NTLMSSP" signature is always in ASCII regardless of the platform */
|
|
#define NTLMSSP_SIGNATURE "\x4e\x54\x4c\x4d\x53\x53\x50"
|
|
|
|
/* The fixed host name we provide, in order to not leak our real local host
|
|
name. Copy the name used by Firefox. */
|
|
#define NTLM_HOSTNAME "WORKSTATION"
|
|
|
|
#if DEBUG_ME
|
|
# define DEBUG_OUT(x) x
|
|
static void ntlm_print_flags(FILE *handle, unsigned long flags)
|
|
{
|
|
if(flags & NTLMFLAG_NEGOTIATE_UNICODE)
|
|
fprintf(handle, "NTLMFLAG_NEGOTIATE_UNICODE ");
|
|
if(flags & NTLMFLAG_NEGOTIATE_OEM)
|
|
fprintf(handle, "NTLMFLAG_NEGOTIATE_OEM ");
|
|
if(flags & NTLMFLAG_REQUEST_TARGET)
|
|
fprintf(handle, "NTLMFLAG_REQUEST_TARGET ");
|
|
if(flags & (1<<3))
|
|
fprintf(handle, "NTLMFLAG_UNKNOWN_3 ");
|
|
if(flags & NTLMFLAG_NEGOTIATE_SIGN)
|
|
fprintf(handle, "NTLMFLAG_NEGOTIATE_SIGN ");
|
|
if(flags & NTLMFLAG_NEGOTIATE_SEAL)
|
|
fprintf(handle, "NTLMFLAG_NEGOTIATE_SEAL ");
|
|
if(flags & NTLMFLAG_NEGOTIATE_DATAGRAM_STYLE)
|
|
fprintf(handle, "NTLMFLAG_NEGOTIATE_DATAGRAM_STYLE ");
|
|
if(flags & NTLMFLAG_NEGOTIATE_LM_KEY)
|
|
fprintf(handle, "NTLMFLAG_NEGOTIATE_LM_KEY ");
|
|
if(flags & NTLMFLAG_NEGOTIATE_NTLM_KEY)
|
|
fprintf(handle, "NTLMFLAG_NEGOTIATE_NTLM_KEY ");
|
|
if(flags & (1<<10))
|
|
fprintf(handle, "NTLMFLAG_UNKNOWN_10 ");
|
|
if(flags & NTLMFLAG_NEGOTIATE_ANONYMOUS)
|
|
fprintf(handle, "NTLMFLAG_NEGOTIATE_ANONYMOUS ");
|
|
if(flags & NTLMFLAG_NEGOTIATE_DOMAIN_SUPPLIED)
|
|
fprintf(handle, "NTLMFLAG_NEGOTIATE_DOMAIN_SUPPLIED ");
|
|
if(flags & NTLMFLAG_NEGOTIATE_WORKSTATION_SUPPLIED)
|
|
fprintf(handle, "NTLMFLAG_NEGOTIATE_WORKSTATION_SUPPLIED ");
|
|
if(flags & NTLMFLAG_NEGOTIATE_LOCAL_CALL)
|
|
fprintf(handle, "NTLMFLAG_NEGOTIATE_LOCAL_CALL ");
|
|
if(flags & NTLMFLAG_NEGOTIATE_ALWAYS_SIGN)
|
|
fprintf(handle, "NTLMFLAG_NEGOTIATE_ALWAYS_SIGN ");
|
|
if(flags & NTLMFLAG_TARGET_TYPE_DOMAIN)
|
|
fprintf(handle, "NTLMFLAG_TARGET_TYPE_DOMAIN ");
|
|
if(flags & NTLMFLAG_TARGET_TYPE_SERVER)
|
|
fprintf(handle, "NTLMFLAG_TARGET_TYPE_SERVER ");
|
|
if(flags & NTLMFLAG_TARGET_TYPE_SHARE)
|
|
fprintf(handle, "NTLMFLAG_TARGET_TYPE_SHARE ");
|
|
if(flags & NTLMFLAG_NEGOTIATE_NTLM2_KEY)
|
|
fprintf(handle, "NTLMFLAG_NEGOTIATE_NTLM2_KEY ");
|
|
if(flags & NTLMFLAG_REQUEST_INIT_RESPONSE)
|
|
fprintf(handle, "NTLMFLAG_REQUEST_INIT_RESPONSE ");
|
|
if(flags & NTLMFLAG_REQUEST_ACCEPT_RESPONSE)
|
|
fprintf(handle, "NTLMFLAG_REQUEST_ACCEPT_RESPONSE ");
|
|
if(flags & NTLMFLAG_REQUEST_NONNT_SESSION_KEY)
|
|
fprintf(handle, "NTLMFLAG_REQUEST_NONNT_SESSION_KEY ");
|
|
if(flags & NTLMFLAG_NEGOTIATE_TARGET_INFO)
|
|
fprintf(handle, "NTLMFLAG_NEGOTIATE_TARGET_INFO ");
|
|
if(flags & (1<<24))
|
|
fprintf(handle, "NTLMFLAG_UNKNOWN_24 ");
|
|
if(flags & (1<<25))
|
|
fprintf(handle, "NTLMFLAG_UNKNOWN_25 ");
|
|
if(flags & (1<<26))
|
|
fprintf(handle, "NTLMFLAG_UNKNOWN_26 ");
|
|
if(flags & (1<<27))
|
|
fprintf(handle, "NTLMFLAG_UNKNOWN_27 ");
|
|
if(flags & (1<<28))
|
|
fprintf(handle, "NTLMFLAG_UNKNOWN_28 ");
|
|
if(flags & NTLMFLAG_NEGOTIATE_128)
|
|
fprintf(handle, "NTLMFLAG_NEGOTIATE_128 ");
|
|
if(flags & NTLMFLAG_NEGOTIATE_KEY_EXCHANGE)
|
|
fprintf(handle, "NTLMFLAG_NEGOTIATE_KEY_EXCHANGE ");
|
|
if(flags & NTLMFLAG_NEGOTIATE_56)
|
|
fprintf(handle, "NTLMFLAG_NEGOTIATE_56 ");
|
|
}
|
|
|
|
static void ntlm_print_hex(FILE *handle, const char *buf, size_t len)
|
|
{
|
|
const char *p = buf;
|
|
|
|
(void) handle;
|
|
|
|
fprintf(stderr, "0x");
|
|
while(len-- > 0)
|
|
fprintf(stderr, "%02.2x", (unsigned int)*p++);
|
|
}
|
|
#else
|
|
# define DEBUG_OUT(x) Curl_nop_stmt
|
|
#endif
|
|
|
|
/*
|
|
* ntlm_decode_type2_target()
|
|
*
|
|
* This is used to decode the "target info" in the NTLM type-2 message
|
|
* received.
|
|
*
|
|
* Parameters:
|
|
*
|
|
* data [in] - The session handle.
|
|
* type2ref [in] - The type-2 message.
|
|
* ntlm [in/out] - The NTLM data struct being used and modified.
|
|
*
|
|
* Returns CURLE_OK on success.
|
|
*/
|
|
static CURLcode ntlm_decode_type2_target(struct Curl_easy *data,
|
|
const struct bufref *type2ref,
|
|
struct ntlmdata *ntlm)
|
|
{
|
|
unsigned short target_info_len = 0;
|
|
unsigned int target_info_offset = 0;
|
|
const unsigned char *type2 = Curl_bufref_ptr(type2ref);
|
|
size_t type2len = Curl_bufref_len(type2ref);
|
|
|
|
#if defined(CURL_DISABLE_VERBOSE_STRINGS)
|
|
(void) data;
|
|
#endif
|
|
|
|
if(type2len >= 48) {
|
|
target_info_len = Curl_read16_le(&type2[40]);
|
|
target_info_offset = Curl_read32_le(&type2[44]);
|
|
if(target_info_len > 0) {
|
|
if((target_info_offset > type2len) ||
|
|
(target_info_offset + target_info_len) > type2len ||
|
|
target_info_offset < 48) {
|
|
infof(data, "NTLM handshake failure (bad type-2 message). "
|
|
"Target Info Offset Len is set incorrect by the peer");
|
|
return CURLE_BAD_CONTENT_ENCODING;
|
|
}
|
|
|
|
free(ntlm->target_info); /* replace any previous data */
|
|
ntlm->target_info = malloc(target_info_len);
|
|
if(!ntlm->target_info)
|
|
return CURLE_OUT_OF_MEMORY;
|
|
|
|
memcpy(ntlm->target_info, &type2[target_info_offset], target_info_len);
|
|
}
|
|
}
|
|
|
|
ntlm->target_info_len = target_info_len;
|
|
|
|
return CURLE_OK;
|
|
}
|
|
|
|
/*
|
|
NTLM message structure notes:
|
|
|
|
A 'short' is a 'network short', a little-endian 16-bit unsigned value.
|
|
|
|
A 'long' is a 'network long', a little-endian, 32-bit unsigned value.
|
|
|
|
A 'security buffer' represents a triplet used to point to a buffer,
|
|
consisting of two shorts and one long:
|
|
|
|
1. A 'short' containing the length of the buffer content in bytes.
|
|
2. A 'short' containing the allocated space for the buffer in bytes.
|
|
3. A 'long' containing the offset to the start of the buffer in bytes,
|
|
from the beginning of the NTLM message.
|
|
*/
|
|
|
|
/*
|
|
* Curl_auth_is_ntlm_supported()
|
|
*
|
|
* This is used to evaluate if NTLM is supported.
|
|
*
|
|
* Parameters: None
|
|
*
|
|
* Returns TRUE as NTLM as handled by libcurl.
|
|
*/
|
|
bool Curl_auth_is_ntlm_supported(void)
|
|
{
|
|
return TRUE;
|
|
}
|
|
|
|
/*
|
|
* Curl_auth_decode_ntlm_type2_message()
|
|
*
|
|
* This is used to decode an NTLM type-2 message. The raw NTLM message is
|
|
* checked * for validity before the appropriate data for creating a type-3
|
|
* message is * written to the given NTLM data structure.
|
|
*
|
|
* Parameters:
|
|
*
|
|
* data [in] - The session handle.
|
|
* type2ref [in] - The type-2 message.
|
|
* ntlm [in/out] - The NTLM data struct being used and modified.
|
|
*
|
|
* Returns CURLE_OK on success.
|
|
*/
|
|
CURLcode Curl_auth_decode_ntlm_type2_message(struct Curl_easy *data,
|
|
const struct bufref *type2ref,
|
|
struct ntlmdata *ntlm)
|
|
{
|
|
static const char type2_marker[] = { 0x02, 0x00, 0x00, 0x00 };
|
|
|
|
/* NTLM type-2 message structure:
|
|
|
|
Index Description Content
|
|
0 NTLMSSP Signature Null-terminated ASCII "NTLMSSP"
|
|
(0x4e544c4d53535000)
|
|
8 NTLM Message Type long (0x02000000)
|
|
12 Target Name security buffer
|
|
20 Flags long
|
|
24 Challenge 8 bytes
|
|
(32) Context 8 bytes (two consecutive longs) (*)
|
|
(40) Target Information security buffer (*)
|
|
(48) OS Version Structure 8 bytes (*)
|
|
32 (48) (56) Start of data block (*)
|
|
(*) -> Optional
|
|
*/
|
|
|
|
CURLcode result = CURLE_OK;
|
|
const unsigned char *type2 = Curl_bufref_ptr(type2ref);
|
|
size_t type2len = Curl_bufref_len(type2ref);
|
|
|
|
#if defined(CURL_DISABLE_VERBOSE_STRINGS)
|
|
(void)data;
|
|
#endif
|
|
|
|
ntlm->flags = 0;
|
|
|
|
if((type2len < 32) ||
|
|
(memcmp(type2, NTLMSSP_SIGNATURE, 8) != 0) ||
|
|
(memcmp(type2 + 8, type2_marker, sizeof(type2_marker)) != 0)) {
|
|
/* This was not a good enough type-2 message */
|
|
infof(data, "NTLM handshake failure (bad type-2 message)");
|
|
return CURLE_BAD_CONTENT_ENCODING;
|
|
}
|
|
|
|
ntlm->flags = Curl_read32_le(&type2[20]);
|
|
memcpy(ntlm->nonce, &type2[24], 8);
|
|
|
|
if(ntlm->flags & NTLMFLAG_NEGOTIATE_TARGET_INFO) {
|
|
result = ntlm_decode_type2_target(data, type2ref, ntlm);
|
|
if(result) {
|
|
infof(data, "NTLM handshake failure (bad type-2 message)");
|
|
return result;
|
|
}
|
|
}
|
|
|
|
DEBUG_OUT({
|
|
fprintf(stderr, "**** TYPE2 header flags=0x%08.8lx ", ntlm->flags);
|
|
ntlm_print_flags(stderr, ntlm->flags);
|
|
fprintf(stderr, "\n nonce=");
|
|
ntlm_print_hex(stderr, (char *)ntlm->nonce, 8);
|
|
fprintf(stderr, "\n****\n");
|
|
fprintf(stderr, "**** Header %s\n ", header);
|
|
});
|
|
|
|
return result;
|
|
}
|
|
|
|
/* copy the source to the destination and fill in zeroes in every
|
|
other destination byte! */
|
|
static void unicodecpy(unsigned char *dest, const char *src, size_t length)
|
|
{
|
|
size_t i;
|
|
for(i = 0; i < length; i++) {
|
|
dest[2 * i] = (unsigned char)src[i];
|
|
dest[2 * i + 1] = '\0';
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Curl_auth_create_ntlm_type1_message()
|
|
*
|
|
* This is used to generate an NTLM type-1 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.
|
|
* service [in] - The service type such as http, smtp, pop or imap.
|
|
* host [in] - The host name.
|
|
* ntlm [in/out] - The NTLM data struct being used and modified.
|
|
* out [out] - The result storage.
|
|
*
|
|
* Returns CURLE_OK on success.
|
|
*/
|
|
CURLcode Curl_auth_create_ntlm_type1_message(struct Curl_easy *data,
|
|
const char *userp,
|
|
const char *passwdp,
|
|
const char *service,
|
|
const char *hostname,
|
|
struct ntlmdata *ntlm,
|
|
struct bufref *out)
|
|
{
|
|
/* NTLM type-1 message structure:
|
|
|
|
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) OS Version Structure 8 bytes (*)
|
|
(32) (40) Start of data block (*)
|
|
(*) -> Optional
|
|
*/
|
|
|
|
size_t size;
|
|
|
|
char *ntlmbuf;
|
|
const char *host = ""; /* empty */
|
|
const char *domain = ""; /* empty */
|
|
size_t hostlen = 0;
|
|
size_t domlen = 0;
|
|
size_t hostoff = 0;
|
|
size_t domoff = hostoff + hostlen; /* This is 0: remember that host and
|
|
domain are empty */
|
|
(void)data;
|
|
(void)userp;
|
|
(void)passwdp;
|
|
(void)service;
|
|
(void)hostname;
|
|
|
|
/* Clean up any former leftovers and initialise to defaults */
|
|
Curl_auth_cleanup_ntlm(ntlm);
|
|
|
|
ntlmbuf = aprintf(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 |
|
|
NTLMFLAG_NEGOTIATE_NTLM2_KEY |
|
|
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 */);
|
|
|
|
if(!ntlmbuf)
|
|
return CURLE_OUT_OF_MEMORY;
|
|
|
|
/* Initial packet length */
|
|
size = 32 + hostlen + domlen;
|
|
|
|
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 |
|
|
NTLMFLAG_NEGOTIATE_NTLM2_KEY |
|
|
NTLMFLAG_NEGOTIATE_ALWAYS_SIGN),
|
|
NTLMFLAG_NEGOTIATE_OEM |
|
|
NTLMFLAG_REQUEST_TARGET |
|
|
NTLMFLAG_NEGOTIATE_NTLM_KEY |
|
|
NTLMFLAG_NEGOTIATE_NTLM2_KEY |
|
|
NTLMFLAG_NEGOTIATE_ALWAYS_SIGN);
|
|
ntlm_print_flags(stderr,
|
|
NTLMFLAG_NEGOTIATE_OEM |
|
|
NTLMFLAG_REQUEST_TARGET |
|
|
NTLMFLAG_NEGOTIATE_NTLM_KEY |
|
|
NTLMFLAG_NEGOTIATE_NTLM2_KEY |
|
|
NTLMFLAG_NEGOTIATE_ALWAYS_SIGN);
|
|
fprintf(stderr, "\n****\n");
|
|
});
|
|
|
|
Curl_bufref_set(out, ntlmbuf, size, curl_free);
|
|
return CURLE_OK;
|
|
}
|
|
|
|
/*
|
|
* 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.
|
|
* out [out] - The result storage.
|
|
*
|
|
* 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,
|
|
struct bufref *out)
|
|
{
|
|
/* 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 */
|
|
int ntrespoff;
|
|
unsigned int ntresplen = 24;
|
|
unsigned char ntresp[24]; /* fixed-size */
|
|
unsigned char *ptr_ntresp = &ntresp[0];
|
|
unsigned char *ntlmv2resp = NULL;
|
|
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;
|
|
|
|
memset(lmresp, 0, sizeof(lmresp));
|
|
memset(ntresp, 0, sizeof(ntresp));
|
|
user = strchr(userp, '\\');
|
|
if(!user)
|
|
user = strchr(userp, '/');
|
|
|
|
if(user) {
|
|
domain = userp;
|
|
domlen = (user - domain);
|
|
user++;
|
|
}
|
|
else
|
|
user = userp;
|
|
|
|
userlen = strlen(user);
|
|
|
|
#ifndef NTLM_HOSTNAME
|
|
/* 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");
|
|
hostlen = 0;
|
|
}
|
|
else {
|
|
hostlen = strlen(host);
|
|
}
|
|
#else
|
|
(void)msnprintf(host, sizeof(host), "%s", NTLM_HOSTNAME);
|
|
hostlen = sizeof(NTLM_HOSTNAME)-1;
|
|
#endif
|
|
|
|
if(ntlm->flags & NTLMFLAG_NEGOTIATE_NTLM2_KEY) {
|
|
unsigned char ntbuffer[0x18];
|
|
unsigned char entropy[8];
|
|
unsigned char ntlmv2hash[0x18];
|
|
|
|
/* Full NTLM version 2
|
|
Although this cannot be negotiated, it is used here if available, as
|
|
servers featuring extended security are likely supporting also
|
|
NTLMv2. */
|
|
result = Curl_rand(data, entropy, 8);
|
|
if(result)
|
|
return result;
|
|
|
|
result = Curl_ntlm_core_mk_nt_hash(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 {
|
|
|
|
unsigned char ntbuffer[0x18];
|
|
unsigned char lmbuffer[0x18];
|
|
|
|
/* NTLM version 1 */
|
|
|
|
result = Curl_ntlm_core_mk_nt_hash(passwdp, ntbuffer);
|
|
if(result)
|
|
return result;
|
|
|
|
Curl_ntlm_core_lm_resp(ntbuffer, &ntlm->nonce[0], ntresp);
|
|
|
|
result = Curl_ntlm_core_mk_lm_hash(passwdp, lmbuffer);
|
|
if(result)
|
|
return result;
|
|
|
|
Curl_ntlm_core_lm_resp(lmbuffer, &ntlm->nonce[0], lmresp);
|
|
ntlm->flags &= ~NTLMFLAG_NEGOTIATE_NTLM2_KEY;
|
|
|
|
/* A safer but less compatible alternative is:
|
|
* Curl_ntlm_core_lm_resp(ntbuffer, &ntlm->nonce[0], lmresp);
|
|
* See https://davenport.sourceforge.net/ntlm.html#ntlmVersion2 */
|
|
}
|
|
|
|
if(unicode) {
|
|
domlen = domlen * 2;
|
|
userlen = userlen * 2;
|
|
hostlen = hostlen * 2;
|
|
}
|
|
|
|
lmrespoff = 64; /* size of the message header */
|
|
ntrespoff = lmrespoff + 0x18;
|
|
domoff = ntrespoff + ntresplen;
|
|
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, /* null-termination */
|
|
0, 0, 0, /* type-3 long, the 24 upper bits */
|
|
|
|
SHORTPAIR(0x18), /* LanManager response length, twice */
|
|
SHORTPAIR(0x18),
|
|
SHORTPAIR(lmrespoff),
|
|
0x0, 0x0,
|
|
|
|
SHORTPAIR(ntresplen), /* NT-response length, twice */
|
|
SHORTPAIR(ntresplen),
|
|
SHORTPAIR(ntrespoff),
|
|
0x0, 0x0,
|
|
|
|
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);
|
|
});
|
|
|
|
/* 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 */
|
|
|
|
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;
|
|
|
|
/* Return the binary blob. */
|
|
result = Curl_bufref_memdup(out, ntlmbuf, size);
|
|
|
|
Curl_auth_cleanup_ntlm(ntlm);
|
|
|
|
return result;
|
|
}
|
|
|
|
/*
|
|
* Curl_auth_cleanup_ntlm()
|
|
*
|
|
* This is used to clean up the NTLM specific data.
|
|
*
|
|
* Parameters:
|
|
*
|
|
* ntlm [in/out] - The NTLM data struct being cleaned up.
|
|
*
|
|
*/
|
|
void Curl_auth_cleanup_ntlm(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 */
|