moparisthebest/curl
1
0
Fork 0
mirror of https://github.com/moparisthebest/curl synced 2024-08-13 17:03:50 -04:00
Code Issues Releases Wiki Activity
46480bb9a1
curl/lib/curl_ntlm_msgs.c
Mark Salisbury 46480bb9a1 SSPI related code: Unicode support for WinCE 
SSPI related code now compiles with ANSI and WCHAR versions of security
methods (WinCE requires WCHAR versions of methods).

Pulled UTF8 to WCHAR conversion methods out of idn_win32.c into their own file.

curl_sasl.c - include curl_memory.h to use correct memory functions.

getenv.c and telnet.c - WinCE compatibility fix

With some committer adjustments
2012-06-15 18:41:49 +02:00

982 lines
30 KiB
C
Raw Blame History

/***************************************************************************
* _ _ ____ _
* Project ___| | | | _ \| |
* / __| | | | |_) | |
* | (__| |_| | _ <| |___
* \___|\___/|_| \_\_____|
*
* Copyright (C) 1998 - 2012, 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 http://curl.haxx.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.
*
***************************************************************************/
#include "setup.h"
#ifdef USE_NTLM
/*
* NTLM details:
*
* http://davenport.sourceforge.net/ntlm.html
* http://www.innovation.ch/java/ntlm.html
*/
#define DEBUG_ME 0
#ifdef USE_SSLEAY
# ifdef USE_OPENSSL
# include <openssl/des.h>
# ifndef OPENSSL_NO_MD4
# include <openssl/md4.h>
# endif
# include <openssl/md5.h>
# include <openssl/ssl.h>
# include <openssl/rand.h>
# else
# include <des.h>
# ifndef OPENSSL_NO_MD4
# include <md4.h>
# endif
# include <md5.h>
# include <ssl.h>
# include <rand.h>
# endif
# include "ssluse.h"
#elif defined(USE_GNUTLS_NETTLE)
# include <nettle/md5.h>
# include <gnutls/gnutls.h>
# include <gnutls/crypto.h>
# define MD5_DIGEST_LENGTH 16
#elif defined(USE_GNUTLS)
# include <gcrypt.h>
# include "gtls.h"
# define MD5_DIGEST_LENGTH 16
# define MD4_DIGEST_LENGTH 16
#elif defined(USE_NSS)
# include <nss.h>
# include <pk11pub.h>
# include <hasht.h>
# include "nssg.h"
# include "curl_md4.h"
# define MD5_DIGEST_LENGTH MD5_LENGTH
#elif defined(USE_WINDOWS_SSPI)
# include "curl_sspi.h"
#else
# error "Can't compile NTLM support without a crypto library."
#endif
#include "urldata.h"
#include "non-ascii.h"
#include "sendf.h"
#include "curl_base64.h"
#include "curl_ntlm_core.h"
#include "curl_gethostname.h"
#include "curl_multibyte.h"
#include "curl_memory.h"
#define BUILDING_CURL_NTLM_MSGS_C
#include "curl_ntlm_msgs.h"
#define _MPRINTF_REPLACE /* use our functions only */
#include <curl/mprintf.h>
/* The last #include file should be: */
#include "memdebug.h"
/* "NTLMSSP" signature is always in ASCII regardless of the platform */
#define NTLMSSP_SIGNATURE "\x4e\x54\x4c\x4d\x53\x53\x50"
#define SHORTPAIR(x) ((x) & 0xff), (((x) >> 8) & 0xff)
#define LONGQUARTET(x) ((x) & 0xff), (((x) >> 8) & 0xff), \
(((x) >> 16) & 0xff), (((x) >> 24) & 0xff)
#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_NETWARE)
fprintf(handle, "NTLMFLAG_NEGOTIATE_NETWARE ");
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
#ifndef USE_WINDOWS_SSPI
/*
* This function converts from the little endian format used in the
* incoming package to whatever endian format we're using natively.
* Argument is a pointer to a 4 byte buffer.
*/
static unsigned int readint_le(unsigned char *buf)
{
return ((unsigned int)buf[0]) | ((unsigned int)buf[1] << 8) |
((unsigned int)buf[2] << 16) | ((unsigned int)buf[3] << 24);
}
#endif
/*
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_ntlm_decode_type2_message()
*
* This is used to decode a ntlm type-2 message received from a: HTTP, SMTP
* or POP3 server. The message is first decoded from a base64 string into a
* raw ntlm message and checked for validity before the appropriate data for
* creating a type-3 message is written to the given ntlm data structure.
*
* Parameters:
*
* data [in] - Pointer to session handle.
* header [in] - Pointer to the input buffer.
* ntlm [in] - Pointer to ntlm data struct being used and modified.
*
* Returns CURLE_OK on success.
*/
CURLcode Curl_ntlm_decode_type2_message(struct SessionHandle *data,
const char* header,
struct ntlmdata* ntlm)
{
#ifndef USE_WINDOWS_SSPI
static const char type2_marker[] = { 0x02, 0x00, 0x00, 0x00 };
#endif
/* 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
*/
size_t size = 0;
unsigned char *buffer = NULL;
CURLcode error;
#if defined(CURL_DISABLE_VERBOSE_STRINGS) || defined(USE_WINDOWS_SSPI)
(void)data;
#endif
error = Curl_base64_decode(header, &buffer, &size);
if(error)
return error;
if(!buffer) {
infof(data, "NTLM handshake failure (unhandled condition)\n");
return CURLE_REMOTE_ACCESS_DENIED;
}
#ifdef USE_WINDOWS_SSPI
ntlm->type_2 = malloc(size + 1);
if(ntlm->type_2 == NULL) {
free(buffer);
return CURLE_OUT_OF_MEMORY;
}
ntlm->n_type_2 = (unsigned long)size;
memcpy(ntlm->type_2, buffer, size);
#else
ntlm->flags = 0;
if((size < 32) ||
(memcmp(buffer, NTLMSSP_SIGNATURE, 8) != 0) ||
(memcmp(buffer + 8, type2_marker, sizeof(type2_marker)) != 0)) {
/* This was not a good enough type-2 message */
free(buffer);
infof(data, "NTLM handshake failure (bad type-2 message)\n");
return CURLE_REMOTE_ACCESS_DENIED;
}
ntlm->flags = readint_le(&buffer[20]);
memcpy(ntlm->nonce, &buffer[24], 8);
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);
});
#endif
free(buffer);
return CURLE_OK;
}
#ifdef USE_WINDOWS_SSPI
void Curl_ntlm_sspi_cleanup(struct ntlmdata *ntlm)
{
if(ntlm->type_2) {
free(ntlm->type_2);
ntlm->type_2 = NULL;
}
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
#ifndef USE_WINDOWS_SSPI
/* 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';
}
}
#endif
/*
* Curl_ntlm_create_type1_message()
*
* This is used to generate an already encoded NTLM type-1 message ready
* for sending to the recipient, be it a: HTTP, SMTP or POP3 server,
* using the appropriate compile time crypo API.
*
* Parameters:
*
* userp [in] - The user name in the format User or Domain\User.
* passdwp [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_ntlm_create_type1_message(const char *userp,
const char *passwdp,
struct ntlmdata *ntlm,
char **outptr,
size_t *outlen)
{
/* 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
*/
unsigned char ntlmbuf[NTLM_BUFSIZE];
size_t size;
#ifdef USE_WINDOWS_SSPI
SecBuffer buf;
SecBufferDesc desc;
SECURITY_STATUS status;
ULONG attrs;
const char *user;
const char *domain = "";
size_t userlen = 0;
size_t domlen = 0;
size_t passwdlen = 0;
TimeStamp tsDummy; /* For Windows 9x compatibility of SSPI calls */
Curl_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)
userlen = strlen(user);
if(passwdp)
passwdlen = strlen(passwdp);
if(userlen > 0) {
/* 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));
#ifdef UNICODE
if((ntlm->identity.User = Curl_convert_UTF8_to_wchar(user)) == NULL)
return CURLE_OUT_OF_MEMORY;
#else
if((ntlm->identity.User = (unsigned char *)strdup(user)) == NULL)
return CURLE_OUT_OF_MEMORY;
#endif
ntlm->identity.UserLength = (unsigned long)userlen;
#ifdef UNICODE
if((ntlm->identity.Password = Curl_convert_UTF8_to_wchar(passwdp)) == NULL)
return CURLE_OUT_OF_MEMORY;
#else
if((ntlm->identity.Password = (unsigned char *)strdup(passwdp)) == NULL)
return CURLE_OUT_OF_MEMORY;
#endif
ntlm->identity.PasswordLength = (unsigned long)passwdlen;
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 = (unsigned long)domlen;
ntlm->identity.Flags = SEC_WINNT_AUTH_IDENTITY_ANSI;
}
else
ntlm->p_identity = NULL;
status = s_pSecFn->AcquireCredentialsHandle(NULL, TEXT("NTLM"),
SECPKG_CRED_OUTBOUND, NULL,
ntlm->p_identity, NULL, NULL,
&ntlm->handle, &tsDummy);
if(status != SEC_E_OK)
return CURLE_OUT_OF_MEMORY;
desc.ulVersion = SECBUFFER_VERSION;
desc.cBuffers = 1;
desc.pBuffers = &buf;
buf.cbBuffer = NTLM_BUFSIZE;
buf.BufferType = SECBUFFER_TOKEN;
buf.pvBuffer = ntlmbuf;
status = s_pSecFn->InitializeSecurityContext(&ntlm->handle, NULL,
TEXT(""),
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
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)userp;
(void)passwdp;
(void)ntlm;
#if USE_NTLM2SESSION
#define NTLM2FLAG NTLMFLAG_NEGOTIATE_NTLM2_KEY
#else
#define NTLM2FLAG 0
#endif
snprintf((char *)ntlmbuf, NTLM_BUFSIZE,
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);
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(NULL, (char *)ntlmbuf, size, outptr, outlen);
}
/*
* Curl_ntlm_create_type3_message()
*
* This is used to generate an already encoded NTLM type-3 message ready
* for sending to the recipient, be it a: HTTP, SMTP or POP3 server,
* using the appropriate compile time crypo API.
*
* Parameters:
*
* data [in] - The session handle.
* userp [in] - The user name in the format User or Domain\User.
* passdwp [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_ntlm_create_type3_message(struct SessionHandle *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
*/
unsigned char ntlmbuf[NTLM_BUFSIZE];
size_t size;
#ifdef USE_WINDOWS_SSPI
SecBuffer type_2;
SecBuffer type_3;
SecBufferDesc type_2_desc;
SecBufferDesc type_3_desc;
SECURITY_STATUS status;
ULONG attrs;
TimeStamp tsDummy; /* For Windows 9x compatibility of SSPI calls */
(void)passwdp;
(void)userp;
(void)data;
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 = NTLM_BUFSIZE;
status = s_pSecFn->InitializeSecurityContext(&ntlm->handle,
&ntlm->c_handle,
TEXT(""),
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;
Curl_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
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;
CURLcode res;
user = strchr(userp, '\\');
if(!user)
user = strchr(userp, '/');
if(user) {
domain = userp;
domlen = (user - domain);
user++;
}
else
user = userp;
if(user)
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(unicode) {
domlen = domlen * 2;
userlen = userlen * 2;
hostlen = hostlen * 2;
}
#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];
unsigned char entropy[8];
/* Need to create 8 bytes random data */
#ifdef USE_SSLEAY
MD5_CTX MD5pw;
Curl_ossl_seed(data); /* Initiate the seed if not already done */
RAND_bytes(entropy, 8);
#elif defined(USE_GNUTLS_NETTLE)
struct md5_ctx MD5pw;
gnutls_rnd(GNUTLS_RND_RANDOM, entropy, 8);
#elif defined(USE_GNUTLS)
gcry_md_hd_t MD5pw;
Curl_gtls_seed(data); /* Initiate the seed if not already done */
gcry_randomize(entropy, 8, GCRY_STRONG_RANDOM);
#elif defined(USE_NSS)
PK11Context *MD5pw;
unsigned int MD5len;
Curl_nss_seed(data); /* Initiate the seed if not already done */
PK11_GenerateRandom(entropy, 8);
#endif
/* 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);
#ifdef USE_SSLEAY
MD5_Init(&MD5pw);
MD5_Update(&MD5pw, tmp, 16);
MD5_Final(md5sum, &MD5pw);
#elif defined(USE_GNUTLS_NETTLE)
md5_init(&MD5pw);
md5_update(&MD5pw, 16, tmp);
md5_digest(&MD5pw, 16, md5sum);
#elif defined(USE_GNUTLS)
gcry_md_open(&MD5pw, GCRY_MD_MD5, 0);
gcry_md_write(MD5pw, tmp, MD5_DIGEST_LENGTH);
memcpy(md5sum, gcry_md_read (MD5pw, 0), MD5_DIGEST_LENGTH);
gcry_md_close(MD5pw);
#elif defined(USE_NSS)
MD5pw = PK11_CreateDigestContext(SEC_OID_MD5);
PK11_DigestOp(MD5pw, tmp, 16);
PK11_DigestFinal(MD5pw, md5sum, &MD5len, MD5_DIGEST_LENGTH);
PK11_DestroyContext(MD5pw, PR_TRUE);
#endif
/* 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 */
if(CURLE_OUT_OF_MEMORY ==
Curl_ntlm_core_mk_nt_hash(data, passwdp, ntbuffer))
return CURLE_OUT_OF_MEMORY;
Curl_ntlm_core_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(CURLE_OUT_OF_MEMORY ==
Curl_ntlm_core_mk_nt_hash(data, passwdp, ntbuffer))
return CURLE_OUT_OF_MEMORY;
Curl_ntlm_core_lm_resp(ntbuffer, &ntlm->nonce[0], ntresp);
#endif
Curl_ntlm_core_mk_lm_hash(data, passwdp, lmbuffer);
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 http://davenport.sourceforge.net/ntlm.html#ntlmVersion2 */
}
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;
/* Create the big type-3 message binary blob */
size = snprintf((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,
#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 < (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);
});
#if USE_NTRESPONSES
if(size < (NTLM_BUFSIZE - 0x18)) {
DEBUGASSERT(size == (size_t)ntrespoff);
memcpy(&ntlmbuf[size], ntresp, 0x18);
size += 0x18;
}
DEBUG_OUT({
fprintf(stderr, "\n ntresp=");
ntlm_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);
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 */
res = Curl_convert_to_network(data, (char *)&ntlmbuf[domoff],
size - domoff);
if(res)
return CURLE_CONV_FAILED;
#endif
/* Return with binary blob encoded into base64 */
return Curl_base64_encode(NULL, (char *)ntlmbuf, size, outptr, outlen);
}
#endif /* USE_NTLM */
Reference in New Issue View Git Blame Copy Permalink