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			716 строки
		
	
	
		
			20 KiB
		
	
	
	
		
			C
		
	
			
		
		
	
	
			716 строки
		
	
	
		
			20 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 - 2022, 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.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_CURL_NTLM_CORE)
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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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/* Please keep the SSL backend-specific #if branches in this order:
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   1. USE_OPENSSL
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   2. USE_GNUTLS
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   3. USE_NSS
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   4. USE_MBEDTLS
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   5. USE_SECTRANSP
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   6. USE_OS400CRYPTO
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   7. USE_WIN32_CRYPTO
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   This ensures that:
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   - the same SSL branch gets activated throughout this source
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     file even if multiple backends are enabled at the same time.
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   - OpenSSL and NSS have higher priority than Windows Crypt, due
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     to issues with the latter supporting NTLM2Session responses
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     in NTLM type-3 messages.
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 */
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#if defined(USE_OPENSSL)
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  #include <openssl/opensslconf.h>
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  #if !defined(OPENSSL_NO_DES) && !defined(OPENSSL_NO_DEPRECATED_3_0)
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    #define USE_OPENSSL_DES
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  #endif
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#endif
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#if defined(USE_OPENSSL_DES) || defined(USE_WOLFSSL)
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#ifdef USE_WOLFSSL
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#include <wolfssl/options.h>
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#endif
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#  include <openssl/des.h>
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#  include <openssl/md5.h>
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#  include <openssl/ssl.h>
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#  include <openssl/rand.h>
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#  if (defined(OPENSSL_VERSION_NUMBER) && \
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       (OPENSSL_VERSION_NUMBER < 0x00907001L)) && !defined(USE_WOLFSSL)
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#    define DES_key_schedule des_key_schedule
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#    define DES_cblock des_cblock
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#    define DES_set_odd_parity des_set_odd_parity
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#    define DES_set_key des_set_key
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#    define DES_ecb_encrypt des_ecb_encrypt
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#    define DESKEY(x) x
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#    define DESKEYARG(x) x
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#  else
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#    define DESKEYARG(x) *x
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#    define DESKEY(x) &x
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#  endif
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#elif defined(USE_GNUTLS)
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#  include <nettle/des.h>
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#elif defined(USE_NSS)
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#  include <nss.h>
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#  include <pk11pub.h>
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#  include <hasht.h>
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#elif defined(USE_MBEDTLS)
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#  include <mbedtls/des.h>
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#elif defined(USE_SECTRANSP)
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#  include <CommonCrypto/CommonCryptor.h>
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#  include <CommonCrypto/CommonDigest.h>
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#elif defined(USE_OS400CRYPTO)
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#  include "cipher.mih"  /* mih/cipher */
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#elif defined(USE_WIN32_CRYPTO)
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#  include <wincrypt.h>
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#else
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#  error "Can't compile NTLM support without a crypto library with DES."
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#endif
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#include "urldata.h"
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#include "strcase.h"
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#include "curl_ntlm_core.h"
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#include "curl_md5.h"
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#include "curl_hmac.h"
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#include "warnless.h"
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#include "curl_endian.h"
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#include "curl_des.h"
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#include "curl_md4.h"
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/* The last 3 #include files should be in this order */
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#include "curl_printf.h"
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#include "curl_memory.h"
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#include "memdebug.h"
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#define NTLMv2_BLOB_SIGNATURE "\x01\x01\x00\x00"
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#define NTLMv2_BLOB_LEN       (44 -16 + ntlm->target_info_len + 4)
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/*
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* Turns a 56-bit key into being 64-bit wide.
 | 
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*/
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static void extend_key_56_to_64(const unsigned char *key_56, char *key)
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{
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  key[0] = key_56[0];
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  key[1] = (unsigned char)(((key_56[0] << 7) & 0xFF) | (key_56[1] >> 1));
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  key[2] = (unsigned char)(((key_56[1] << 6) & 0xFF) | (key_56[2] >> 2));
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  key[3] = (unsigned char)(((key_56[2] << 5) & 0xFF) | (key_56[3] >> 3));
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  key[4] = (unsigned char)(((key_56[3] << 4) & 0xFF) | (key_56[4] >> 4));
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  key[5] = (unsigned char)(((key_56[4] << 3) & 0xFF) | (key_56[5] >> 5));
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  key[6] = (unsigned char)(((key_56[5] << 2) & 0xFF) | (key_56[6] >> 6));
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  key[7] = (unsigned char) ((key_56[6] << 1) & 0xFF);
 | 
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}
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#if defined(USE_OPENSSL_DES) || defined(USE_WOLFSSL)
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/*
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 * Turns a 56 bit key into the 64 bit, odd parity key and sets the key.  The
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 * key schedule ks is also set.
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 */
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static void setup_des_key(const unsigned char *key_56,
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                          DES_key_schedule DESKEYARG(ks))
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{
 | 
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  DES_cblock key;
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  /* Expand the 56-bit key to 64-bits */
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  extend_key_56_to_64(key_56, (char *) &key);
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  /* Set the key parity to odd */
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  DES_set_odd_parity(&key);
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  /* Set the key */
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  DES_set_key_unchecked(&key, ks);
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}
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#elif defined(USE_GNUTLS)
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static void setup_des_key(const unsigned char *key_56,
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                          struct des_ctx *des)
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{
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  char key[8];
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  /* Expand the 56-bit key to 64-bits */
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  extend_key_56_to_64(key_56, key);
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  /* Set the key parity to odd */
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  Curl_des_set_odd_parity((unsigned char *) key, sizeof(key));
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  /* Set the key */
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  des_set_key(des, (const uint8_t *) key);
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}
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#elif defined(USE_NSS)
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/*
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 * Expands a 56 bit key KEY_56 to 64 bit and encrypts 64 bit of data, using
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 * the expanded key.  The caller is responsible for giving 64 bit of valid
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 * data is IN and (at least) 64 bit large buffer as OUT.
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 */
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static bool encrypt_des(const unsigned char *in, unsigned char *out,
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                        const unsigned char *key_56)
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{
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  const CK_MECHANISM_TYPE mech = CKM_DES_ECB; /* DES cipher in ECB mode */
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  char key[8];                                /* expanded 64 bit key */
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  SECItem key_item;
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  PK11SymKey *symkey = NULL;
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  SECItem *param = NULL;
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  PK11Context *ctx = NULL;
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  int out_len;                                /* not used, required by NSS */
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  bool rv = FALSE;
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  /* use internal slot for DES encryption (requires NSS to be initialized) */
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  PK11SlotInfo *slot = PK11_GetInternalKeySlot();
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  if(!slot)
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    return FALSE;
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  /* Expand the 56-bit key to 64-bits */
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  extend_key_56_to_64(key_56, key);
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  /* Set the key parity to odd */
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  Curl_des_set_odd_parity((unsigned char *) key, sizeof(key));
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  /* Import the key */
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  key_item.data = (unsigned char *)key;
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  key_item.len = sizeof(key);
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  symkey = PK11_ImportSymKey(slot, mech, PK11_OriginUnwrap, CKA_ENCRYPT,
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                             &key_item, NULL);
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  if(!symkey)
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    goto fail;
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  /* Create the DES encryption context */
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  param = PK11_ParamFromIV(mech, /* no IV in ECB mode */ NULL);
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  if(!param)
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    goto fail;
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  ctx = PK11_CreateContextBySymKey(mech, CKA_ENCRYPT, symkey, param);
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  if(!ctx)
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    goto fail;
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  /* Perform the encryption */
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  if(SECSuccess == PK11_CipherOp(ctx, out, &out_len, /* outbuflen */ 8,
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                                 (unsigned char *)in, /* inbuflen */ 8)
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      && SECSuccess == PK11_Finalize(ctx))
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    rv = /* all OK */ TRUE;
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fail:
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  /* cleanup */
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  if(ctx)
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    PK11_DestroyContext(ctx, PR_TRUE);
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  if(symkey)
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    PK11_FreeSymKey(symkey);
 | 
						|
  if(param)
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    SECITEM_FreeItem(param, PR_TRUE);
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  PK11_FreeSlot(slot);
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  return rv;
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}
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#elif defined(USE_MBEDTLS)
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 | 
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static bool encrypt_des(const unsigned char *in, unsigned char *out,
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                        const unsigned char *key_56)
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						|
{
 | 
						|
  mbedtls_des_context ctx;
 | 
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  char key[8];
 | 
						|
 | 
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  /* Expand the 56-bit key to 64-bits */
 | 
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  extend_key_56_to_64(key_56, key);
 | 
						|
 | 
						|
  /* Set the key parity to odd */
 | 
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  mbedtls_des_key_set_parity((unsigned char *) key);
 | 
						|
 | 
						|
  /* Perform the encryption */
 | 
						|
  mbedtls_des_init(&ctx);
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  mbedtls_des_setkey_enc(&ctx, (unsigned char *) key);
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						|
  return mbedtls_des_crypt_ecb(&ctx, in, out) == 0;
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}
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 | 
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#elif defined(USE_SECTRANSP)
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 | 
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static bool encrypt_des(const unsigned char *in, unsigned char *out,
 | 
						|
                        const unsigned char *key_56)
 | 
						|
{
 | 
						|
  char key[8];
 | 
						|
  size_t out_len;
 | 
						|
  CCCryptorStatus err;
 | 
						|
 | 
						|
  /* Expand the 56-bit key to 64-bits */
 | 
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  extend_key_56_to_64(key_56, key);
 | 
						|
 | 
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  /* Set the key parity to odd */
 | 
						|
  Curl_des_set_odd_parity((unsigned char *) key, sizeof(key));
 | 
						|
 | 
						|
  /* Perform the encryption */
 | 
						|
  err = CCCrypt(kCCEncrypt, kCCAlgorithmDES, kCCOptionECBMode, key,
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						|
                kCCKeySizeDES, NULL, in, 8 /* inbuflen */, out,
 | 
						|
                8 /* outbuflen */, &out_len);
 | 
						|
 | 
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  return err == kCCSuccess;
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						|
}
 | 
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 | 
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#elif defined(USE_OS400CRYPTO)
 | 
						|
 | 
						|
static bool encrypt_des(const unsigned char *in, unsigned char *out,
 | 
						|
                        const unsigned char *key_56)
 | 
						|
{
 | 
						|
  char key[8];
 | 
						|
  _CIPHER_Control_T ctl;
 | 
						|
 | 
						|
  /* Setup the cipher control structure */
 | 
						|
  ctl.Func_ID = ENCRYPT_ONLY;
 | 
						|
  ctl.Data_Len = sizeof(key);
 | 
						|
 | 
						|
  /* Expand the 56-bit key to 64-bits */
 | 
						|
  extend_key_56_to_64(key_56, ctl.Crypto_Key);
 | 
						|
 | 
						|
  /* Set the key parity to odd */
 | 
						|
  Curl_des_set_odd_parity((unsigned char *) ctl.Crypto_Key, ctl.Data_Len);
 | 
						|
 | 
						|
  /* Perform the encryption */
 | 
						|
  _CIPHER((_SPCPTR *) &out, &ctl, (_SPCPTR *) &in);
 | 
						|
 | 
						|
  return TRUE;
 | 
						|
}
 | 
						|
 | 
						|
#elif defined(USE_WIN32_CRYPTO)
 | 
						|
 | 
						|
static bool encrypt_des(const unsigned char *in, unsigned char *out,
 | 
						|
                        const unsigned char *key_56)
 | 
						|
{
 | 
						|
  HCRYPTPROV hprov;
 | 
						|
  HCRYPTKEY hkey;
 | 
						|
  struct {
 | 
						|
    BLOBHEADER hdr;
 | 
						|
    unsigned int len;
 | 
						|
    char key[8];
 | 
						|
  } blob;
 | 
						|
  DWORD len = 8;
 | 
						|
 | 
						|
  /* Acquire the crypto provider */
 | 
						|
  if(!CryptAcquireContext(&hprov, NULL, NULL, PROV_RSA_FULL,
 | 
						|
                          CRYPT_VERIFYCONTEXT | CRYPT_SILENT))
 | 
						|
    return FALSE;
 | 
						|
 | 
						|
  /* Setup the key blob structure */
 | 
						|
  memset(&blob, 0, sizeof(blob));
 | 
						|
  blob.hdr.bType = PLAINTEXTKEYBLOB;
 | 
						|
  blob.hdr.bVersion = 2;
 | 
						|
  blob.hdr.aiKeyAlg = CALG_DES;
 | 
						|
  blob.len = sizeof(blob.key);
 | 
						|
 | 
						|
  /* Expand the 56-bit key to 64-bits */
 | 
						|
  extend_key_56_to_64(key_56, blob.key);
 | 
						|
 | 
						|
  /* Set the key parity to odd */
 | 
						|
  Curl_des_set_odd_parity((unsigned char *) blob.key, sizeof(blob.key));
 | 
						|
 | 
						|
  /* Import the key */
 | 
						|
  if(!CryptImportKey(hprov, (BYTE *) &blob, sizeof(blob), 0, 0, &hkey)) {
 | 
						|
    CryptReleaseContext(hprov, 0);
 | 
						|
 | 
						|
    return FALSE;
 | 
						|
  }
 | 
						|
 | 
						|
  memcpy(out, in, 8);
 | 
						|
 | 
						|
  /* Perform the encryption */
 | 
						|
  CryptEncrypt(hkey, 0, FALSE, 0, out, &len, len);
 | 
						|
 | 
						|
  CryptDestroyKey(hkey);
 | 
						|
  CryptReleaseContext(hprov, 0);
 | 
						|
 | 
						|
  return TRUE;
 | 
						|
}
 | 
						|
 | 
						|
#endif /* defined(USE_WIN32_CRYPTO) */
 | 
						|
 | 
						|
 /*
 | 
						|
  * takes a 21 byte array and treats it as 3 56-bit DES keys. The
 | 
						|
  * 8 byte plaintext is encrypted with each key and the resulting 24
 | 
						|
  * bytes are stored in the results array.
 | 
						|
  */
 | 
						|
void Curl_ntlm_core_lm_resp(const unsigned char *keys,
 | 
						|
                            const unsigned char *plaintext,
 | 
						|
                            unsigned char *results)
 | 
						|
{
 | 
						|
#if defined(USE_OPENSSL_DES) || defined(USE_WOLFSSL)
 | 
						|
  DES_key_schedule ks;
 | 
						|
 | 
						|
  setup_des_key(keys, DESKEY(ks));
 | 
						|
  DES_ecb_encrypt((DES_cblock*) plaintext, (DES_cblock*) results,
 | 
						|
                  DESKEY(ks), DES_ENCRYPT);
 | 
						|
 | 
						|
  setup_des_key(keys + 7, DESKEY(ks));
 | 
						|
  DES_ecb_encrypt((DES_cblock*) plaintext, (DES_cblock*) (results + 8),
 | 
						|
                  DESKEY(ks), DES_ENCRYPT);
 | 
						|
 | 
						|
  setup_des_key(keys + 14, DESKEY(ks));
 | 
						|
  DES_ecb_encrypt((DES_cblock*) plaintext, (DES_cblock*) (results + 16),
 | 
						|
                  DESKEY(ks), DES_ENCRYPT);
 | 
						|
#elif defined(USE_GNUTLS)
 | 
						|
  struct des_ctx des;
 | 
						|
  setup_des_key(keys, &des);
 | 
						|
  des_encrypt(&des, 8, results, plaintext);
 | 
						|
  setup_des_key(keys + 7, &des);
 | 
						|
  des_encrypt(&des, 8, results + 8, plaintext);
 | 
						|
  setup_des_key(keys + 14, &des);
 | 
						|
  des_encrypt(&des, 8, results + 16, plaintext);
 | 
						|
#elif defined(USE_NSS) || defined(USE_MBEDTLS) || defined(USE_SECTRANSP) \
 | 
						|
  || defined(USE_OS400CRYPTO) || defined(USE_WIN32_CRYPTO)
 | 
						|
  encrypt_des(plaintext, results, keys);
 | 
						|
  encrypt_des(plaintext, results + 8, keys + 7);
 | 
						|
  encrypt_des(plaintext, results + 16, keys + 14);
 | 
						|
#endif
 | 
						|
}
 | 
						|
 | 
						|
/*
 | 
						|
 * Set up lanmanager hashed password
 | 
						|
 */
 | 
						|
CURLcode Curl_ntlm_core_mk_lm_hash(const char *password,
 | 
						|
                                   unsigned char *lmbuffer /* 21 bytes */)
 | 
						|
{
 | 
						|
  unsigned char pw[14];
 | 
						|
  static const unsigned char magic[] = {
 | 
						|
    0x4B, 0x47, 0x53, 0x21, 0x40, 0x23, 0x24, 0x25 /* i.e. KGS!@#$% */
 | 
						|
  };
 | 
						|
  size_t len = CURLMIN(strlen(password), 14);
 | 
						|
 | 
						|
  Curl_strntoupper((char *)pw, password, len);
 | 
						|
  memset(&pw[len], 0, 14 - len);
 | 
						|
 | 
						|
  {
 | 
						|
    /* Create LanManager hashed password. */
 | 
						|
 | 
						|
#if defined(USE_OPENSSL_DES) || defined(USE_WOLFSSL)
 | 
						|
    DES_key_schedule ks;
 | 
						|
 | 
						|
    setup_des_key(pw, DESKEY(ks));
 | 
						|
    DES_ecb_encrypt((DES_cblock *)magic, (DES_cblock *)lmbuffer,
 | 
						|
                    DESKEY(ks), DES_ENCRYPT);
 | 
						|
 | 
						|
    setup_des_key(pw + 7, DESKEY(ks));
 | 
						|
    DES_ecb_encrypt((DES_cblock *)magic, (DES_cblock *)(lmbuffer + 8),
 | 
						|
                    DESKEY(ks), DES_ENCRYPT);
 | 
						|
#elif defined(USE_GNUTLS)
 | 
						|
    struct des_ctx des;
 | 
						|
    setup_des_key(pw, &des);
 | 
						|
    des_encrypt(&des, 8, lmbuffer, magic);
 | 
						|
    setup_des_key(pw + 7, &des);
 | 
						|
    des_encrypt(&des, 8, lmbuffer + 8, magic);
 | 
						|
#elif defined(USE_NSS) || defined(USE_MBEDTLS) || defined(USE_SECTRANSP) \
 | 
						|
  || defined(USE_OS400CRYPTO) || defined(USE_WIN32_CRYPTO)
 | 
						|
    encrypt_des(magic, lmbuffer, pw);
 | 
						|
    encrypt_des(magic, lmbuffer + 8, pw + 7);
 | 
						|
#endif
 | 
						|
 | 
						|
    memset(lmbuffer + 16, 0, 21 - 16);
 | 
						|
  }
 | 
						|
 | 
						|
  return CURLE_OK;
 | 
						|
}
 | 
						|
 | 
						|
static void ascii_to_unicode_le(unsigned char *dest, const char *src,
 | 
						|
                                size_t srclen)
 | 
						|
{
 | 
						|
  size_t i;
 | 
						|
  for(i = 0; i < srclen; i++) {
 | 
						|
    dest[2 * i] = (unsigned char)src[i];
 | 
						|
    dest[2 * i + 1] = '\0';
 | 
						|
  }
 | 
						|
}
 | 
						|
 | 
						|
#if !defined(USE_WINDOWS_SSPI)
 | 
						|
 | 
						|
static void ascii_uppercase_to_unicode_le(unsigned char *dest,
 | 
						|
                                          const char *src, size_t srclen)
 | 
						|
{
 | 
						|
  size_t i;
 | 
						|
  for(i = 0; i < srclen; i++) {
 | 
						|
    dest[2 * i] = (unsigned char)(Curl_raw_toupper(src[i]));
 | 
						|
    dest[2 * i + 1] = '\0';
 | 
						|
  }
 | 
						|
}
 | 
						|
 | 
						|
#endif /* !USE_WINDOWS_SSPI */
 | 
						|
 | 
						|
/*
 | 
						|
 * Set up nt hashed passwords
 | 
						|
 * @unittest: 1600
 | 
						|
 */
 | 
						|
CURLcode Curl_ntlm_core_mk_nt_hash(const char *password,
 | 
						|
                                   unsigned char *ntbuffer /* 21 bytes */)
 | 
						|
{
 | 
						|
  size_t len = strlen(password);
 | 
						|
  unsigned char *pw;
 | 
						|
  if(len > SIZE_T_MAX/2) /* avoid integer overflow */
 | 
						|
    return CURLE_OUT_OF_MEMORY;
 | 
						|
  pw = len ? malloc(len * 2) : (unsigned char *)strdup("");
 | 
						|
  if(!pw)
 | 
						|
    return CURLE_OUT_OF_MEMORY;
 | 
						|
 | 
						|
  ascii_to_unicode_le(pw, password, len);
 | 
						|
 | 
						|
  /* Create NT hashed password. */
 | 
						|
  Curl_md4it(ntbuffer, pw, 2 * len);
 | 
						|
  memset(ntbuffer + 16, 0, 21 - 16);
 | 
						|
 | 
						|
  free(pw);
 | 
						|
 | 
						|
  return CURLE_OK;
 | 
						|
}
 | 
						|
 | 
						|
#if !defined(USE_WINDOWS_SSPI)
 | 
						|
 | 
						|
/* Timestamp in tenths of a microsecond since January 1, 1601 00:00:00 UTC. */
 | 
						|
struct ms_filetime {
 | 
						|
  unsigned int dwLowDateTime;
 | 
						|
  unsigned int dwHighDateTime;
 | 
						|
};
 | 
						|
 | 
						|
/* Convert a time_t to an MS FILETIME (MS-DTYP section 2.3.3). */
 | 
						|
static void time2filetime(struct ms_filetime *ft, time_t t)
 | 
						|
{
 | 
						|
#if SIZEOF_TIME_T > 4
 | 
						|
  t = (t + CURL_OFF_T_C(11644473600)) * 10000000;
 | 
						|
  ft->dwLowDateTime = (unsigned int) (t & 0xFFFFFFFF);
 | 
						|
  ft->dwHighDateTime = (unsigned int) (t >> 32);
 | 
						|
#else
 | 
						|
  unsigned int r, s;
 | 
						|
  unsigned int i;
 | 
						|
 | 
						|
  ft->dwLowDateTime = t & 0xFFFFFFFF;
 | 
						|
  ft->dwHighDateTime = 0;
 | 
						|
 | 
						|
# ifndef HAVE_TIME_T_UNSIGNED
 | 
						|
  /* Extend sign if needed. */
 | 
						|
  if(ft->dwLowDateTime & 0x80000000)
 | 
						|
    ft->dwHighDateTime = ~0;
 | 
						|
# endif
 | 
						|
 | 
						|
  /* Bias seconds to Jan 1, 1601.
 | 
						|
     134774 days = 11644473600 seconds = 0x2B6109100 */
 | 
						|
  r = ft->dwLowDateTime;
 | 
						|
  ft->dwLowDateTime = (ft->dwLowDateTime + 0xB6109100U) & 0xFFFFFFFF;
 | 
						|
  ft->dwHighDateTime += ft->dwLowDateTime < r? 0x03: 0x02;
 | 
						|
 | 
						|
  /* Convert to tenths of microseconds. */
 | 
						|
  ft->dwHighDateTime *= 10000000;
 | 
						|
  i = 32;
 | 
						|
  do {
 | 
						|
    i -= 8;
 | 
						|
    s = ((ft->dwLowDateTime >> i) & 0xFF) * (10000000 - 1);
 | 
						|
    r = (s << i) & 0xFFFFFFFF;
 | 
						|
    s >>= 1;   /* Split shift to avoid width overflow. */
 | 
						|
    s >>= 31 - i;
 | 
						|
    ft->dwLowDateTime = (ft->dwLowDateTime + r) & 0xFFFFFFFF;
 | 
						|
    if(ft->dwLowDateTime < r)
 | 
						|
      s++;
 | 
						|
    ft->dwHighDateTime += s;
 | 
						|
  } while(i);
 | 
						|
  ft->dwHighDateTime &= 0xFFFFFFFF;
 | 
						|
#endif
 | 
						|
}
 | 
						|
 | 
						|
/* This creates the NTLMv2 hash by using NTLM hash as the key and Unicode
 | 
						|
 * (uppercase UserName + Domain) as the data
 | 
						|
 */
 | 
						|
CURLcode Curl_ntlm_core_mk_ntlmv2_hash(const char *user, size_t userlen,
 | 
						|
                                       const char *domain, size_t domlen,
 | 
						|
                                       unsigned char *ntlmhash,
 | 
						|
                                       unsigned char *ntlmv2hash)
 | 
						|
{
 | 
						|
  /* Unicode representation */
 | 
						|
  size_t identity_len;
 | 
						|
  unsigned char *identity;
 | 
						|
  CURLcode result = CURLE_OK;
 | 
						|
 | 
						|
  if((userlen > CURL_MAX_INPUT_LENGTH) || (domlen > CURL_MAX_INPUT_LENGTH))
 | 
						|
    return CURLE_OUT_OF_MEMORY;
 | 
						|
 | 
						|
  identity_len = (userlen + domlen) * 2;
 | 
						|
  identity = malloc(identity_len + 1);
 | 
						|
 | 
						|
  if(!identity)
 | 
						|
    return CURLE_OUT_OF_MEMORY;
 | 
						|
 | 
						|
  ascii_uppercase_to_unicode_le(identity, user, userlen);
 | 
						|
  ascii_to_unicode_le(identity + (userlen << 1), domain, domlen);
 | 
						|
 | 
						|
  result = Curl_hmacit(Curl_HMAC_MD5, ntlmhash, 16, identity, identity_len,
 | 
						|
                       ntlmv2hash);
 | 
						|
  free(identity);
 | 
						|
 | 
						|
  return result;
 | 
						|
}
 | 
						|
 | 
						|
/*
 | 
						|
 * Curl_ntlm_core_mk_ntlmv2_resp()
 | 
						|
 *
 | 
						|
 * This creates the NTLMv2 response as set in the ntlm type-3 message.
 | 
						|
 *
 | 
						|
 * Parameters:
 | 
						|
 *
 | 
						|
 * ntlmv2hash       [in] - The ntlmv2 hash (16 bytes)
 | 
						|
 * challenge_client [in] - The client nonce (8 bytes)
 | 
						|
 * ntlm             [in] - The ntlm data struct being used to read TargetInfo
 | 
						|
                           and Server challenge received in the type-2 message
 | 
						|
 * ntresp          [out] - The address where a pointer to newly allocated
 | 
						|
 *                         memory holding the NTLMv2 response.
 | 
						|
 * ntresp_len      [out] - The length of the output message.
 | 
						|
 *
 | 
						|
 * Returns CURLE_OK on success.
 | 
						|
 */
 | 
						|
CURLcode Curl_ntlm_core_mk_ntlmv2_resp(unsigned char *ntlmv2hash,
 | 
						|
                                       unsigned char *challenge_client,
 | 
						|
                                       struct ntlmdata *ntlm,
 | 
						|
                                       unsigned char **ntresp,
 | 
						|
                                       unsigned int *ntresp_len)
 | 
						|
{
 | 
						|
/* NTLMv2 response structure :
 | 
						|
------------------------------------------------------------------------------
 | 
						|
0     HMAC MD5         16 bytes
 | 
						|
------BLOB--------------------------------------------------------------------
 | 
						|
16    Signature        0x01010000
 | 
						|
20    Reserved         long (0x00000000)
 | 
						|
24    Timestamp        LE, 64-bit signed value representing the number of
 | 
						|
                       tenths of a microsecond since January 1, 1601.
 | 
						|
32    Client Nonce     8 bytes
 | 
						|
40    Unknown          4 bytes
 | 
						|
44    Target Info      N bytes (from the type-2 message)
 | 
						|
44+N  Unknown          4 bytes
 | 
						|
------------------------------------------------------------------------------
 | 
						|
*/
 | 
						|
 | 
						|
  unsigned int len = 0;
 | 
						|
  unsigned char *ptr = NULL;
 | 
						|
  unsigned char hmac_output[HMAC_MD5_LENGTH];
 | 
						|
  struct ms_filetime tw;
 | 
						|
 | 
						|
  CURLcode result = CURLE_OK;
 | 
						|
 | 
						|
  /* Calculate the timestamp */
 | 
						|
#ifdef DEBUGBUILD
 | 
						|
  char *force_timestamp = getenv("CURL_FORCETIME");
 | 
						|
  if(force_timestamp)
 | 
						|
    time2filetime(&tw, (time_t) 0);
 | 
						|
  else
 | 
						|
#endif
 | 
						|
    time2filetime(&tw, time(NULL));
 | 
						|
 | 
						|
  /* Calculate the response len */
 | 
						|
  len = HMAC_MD5_LENGTH + NTLMv2_BLOB_LEN;
 | 
						|
 | 
						|
  /* Allocate the response */
 | 
						|
  ptr = calloc(1, len);
 | 
						|
  if(!ptr)
 | 
						|
    return CURLE_OUT_OF_MEMORY;
 | 
						|
 | 
						|
  /* Create the BLOB structure */
 | 
						|
  msnprintf((char *)ptr + HMAC_MD5_LENGTH, NTLMv2_BLOB_LEN,
 | 
						|
            "%c%c%c%c"           /* NTLMv2_BLOB_SIGNATURE */
 | 
						|
            "%c%c%c%c"           /* Reserved = 0 */
 | 
						|
            "%c%c%c%c%c%c%c%c",  /* Timestamp */
 | 
						|
            NTLMv2_BLOB_SIGNATURE[0], NTLMv2_BLOB_SIGNATURE[1],
 | 
						|
            NTLMv2_BLOB_SIGNATURE[2], NTLMv2_BLOB_SIGNATURE[3],
 | 
						|
            0, 0, 0, 0,
 | 
						|
            LONGQUARTET(tw.dwLowDateTime), LONGQUARTET(tw.dwHighDateTime));
 | 
						|
 | 
						|
  memcpy(ptr + 32, challenge_client, 8);
 | 
						|
  memcpy(ptr + 44, ntlm->target_info, ntlm->target_info_len);
 | 
						|
 | 
						|
  /* Concatenate the Type 2 challenge with the BLOB and do HMAC MD5 */
 | 
						|
  memcpy(ptr + 8, &ntlm->nonce[0], 8);
 | 
						|
  result = Curl_hmacit(Curl_HMAC_MD5, ntlmv2hash, HMAC_MD5_LENGTH, ptr + 8,
 | 
						|
                    NTLMv2_BLOB_LEN + 8, hmac_output);
 | 
						|
  if(result) {
 | 
						|
    free(ptr);
 | 
						|
    return result;
 | 
						|
  }
 | 
						|
 | 
						|
  /* Concatenate the HMAC MD5 output  with the BLOB */
 | 
						|
  memcpy(ptr, hmac_output, HMAC_MD5_LENGTH);
 | 
						|
 | 
						|
  /* Return the response */
 | 
						|
  *ntresp = ptr;
 | 
						|
  *ntresp_len = len;
 | 
						|
 | 
						|
  return result;
 | 
						|
}
 | 
						|
 | 
						|
/*
 | 
						|
 * Curl_ntlm_core_mk_lmv2_resp()
 | 
						|
 *
 | 
						|
 * This creates the LMv2 response as used in the ntlm type-3 message.
 | 
						|
 *
 | 
						|
 * Parameters:
 | 
						|
 *
 | 
						|
 * ntlmv2hash        [in] - The ntlmv2 hash (16 bytes)
 | 
						|
 * challenge_client  [in] - The client nonce (8 bytes)
 | 
						|
 * challenge_client  [in] - The server challenge (8 bytes)
 | 
						|
 * lmresp           [out] - The LMv2 response (24 bytes)
 | 
						|
 *
 | 
						|
 * Returns CURLE_OK on success.
 | 
						|
 */
 | 
						|
CURLcode  Curl_ntlm_core_mk_lmv2_resp(unsigned char *ntlmv2hash,
 | 
						|
                                      unsigned char *challenge_client,
 | 
						|
                                      unsigned char *challenge_server,
 | 
						|
                                      unsigned char *lmresp)
 | 
						|
{
 | 
						|
  unsigned char data[16];
 | 
						|
  unsigned char hmac_output[16];
 | 
						|
  CURLcode result = CURLE_OK;
 | 
						|
 | 
						|
  memcpy(&data[0], challenge_server, 8);
 | 
						|
  memcpy(&data[8], challenge_client, 8);
 | 
						|
 | 
						|
  result = Curl_hmacit(Curl_HMAC_MD5, ntlmv2hash, 16, &data[0], 16,
 | 
						|
                       hmac_output);
 | 
						|
  if(result)
 | 
						|
    return result;
 | 
						|
 | 
						|
  /* Concatenate the HMAC MD5 output  with the client nonce */
 | 
						|
  memcpy(lmresp, hmac_output, 16);
 | 
						|
  memcpy(lmresp + 16, challenge_client, 8);
 | 
						|
 | 
						|
  return result;
 | 
						|
}
 | 
						|
 | 
						|
#endif /* !USE_WINDOWS_SSPI */
 | 
						|
 | 
						|
#endif /* USE_CURL_NTLM_CORE */
 |