mirror of
https://github.com/moparisthebest/curl
synced 2024-11-17 15:05:02 -05:00
39c803cba2
As of https://boringssl-review.googlesource.com/#/c/6980/, almost all of BoringSSL #ifdefs in cURL should be unnecessary: - BoringSSL provides no-op stubs for compatibility which replaces most #ifdefs. - DES_set_odd_parity has been in BoringSSL for nearly a year now. Remove the compatibility codepath. - With a small tweak to an extend_key_56_to_64 call, the NTLM code builds fine. - Switch OCSP-related #ifdefs to the more generally useful OPENSSL_NO_OCSP. The only #ifdefs which remain are Curl_ossl_version and the #undefs to work around OpenSSL and wincrypt.h name conflicts. (BoringSSL leaves that to the consumer. The in-header workaround makes things sensitive to include order.) This change errs on the side of removing conditionals despite many of the restored codepaths being no-ops. (BoringSSL generally adds no-op compatibility stubs when possible. OPENSSL_VERSION_NUMBER #ifdefs are bad enough!) Closes #640
763 lines
22 KiB
C
763 lines
22 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 - 2015, 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)
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/*
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* NTLM details:
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*
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* http://davenport.sourceforge.net/ntlm.html
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* http://www.innovation.ch/java/ntlm.html
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*/
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#if !defined(USE_WINDOWS_SSPI) || defined(USE_WIN32_CRYPTO)
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#ifdef USE_OPENSSL
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# ifdef USE_OPENSSL
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# include <openssl/des.h>
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# ifndef OPENSSL_NO_MD4
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# include <openssl/md4.h>
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# endif
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# include <openssl/md5.h>
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# include <openssl/ssl.h>
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# include <openssl/rand.h>
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# else
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# include <des.h>
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# ifndef OPENSSL_NO_MD4
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# include <md4.h>
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# endif
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# include <md5.h>
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# include <ssl.h>
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# include <rand.h>
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# endif
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# if (OPENSSL_VERSION_NUMBER < 0x00907001L)
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# define DES_key_schedule des_key_schedule
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# define DES_cblock des_cblock
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# define DES_set_odd_parity des_set_odd_parity
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# define DES_set_key des_set_key
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# define DES_ecb_encrypt des_ecb_encrypt
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# 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_NETTLE)
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# include <nettle/des.h>
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# include <nettle/md4.h>
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#elif defined(USE_GNUTLS)
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# include <gcrypt.h>
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# define MD5_DIGEST_LENGTH 16
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# define MD4_DIGEST_LENGTH 16
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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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# include "curl_md4.h"
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# define MD5_DIGEST_LENGTH MD5_LENGTH
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#elif defined(USE_DARWINSSL)
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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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# include "curl_md4.h"
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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."
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#endif
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#include "urldata.h"
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#include "non-ascii.h"
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#include "rawstr.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_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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#define NTLM_HMAC_MD5_LEN (16)
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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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#ifdef USE_OPENSSL
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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(&key, ks);
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}
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#elif defined(USE_GNUTLS_NETTLE)
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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_GNUTLS)
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/*
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* Turns a 56 bit key into the 64 bit, odd parity key and sets the key.
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*/
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static void setup_des_key(const unsigned char *key_56,
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gcry_cipher_hd_t *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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gcry_cipher_setkey(*des, key, sizeof(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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PK11SlotInfo *slot = NULL;
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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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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);
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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_DARWINSSL)
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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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char key[8];
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size_t out_len;
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CCCryptorStatus err;
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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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/* Perform the encryption */
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err = CCCrypt(kCCEncrypt, kCCAlgorithmDES, kCCOptionECBMode, key,
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kCCKeySizeDES, NULL, in, 8 /* inbuflen */, out,
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8 /* outbuflen */, &out_len);
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return err == kCCSuccess;
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}
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#elif defined(USE_OS400CRYPTO)
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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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char key[8];
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_CIPHER_Control_T ctl;
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/* Setup the cipher control structure */
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ctl.Func_ID = ENCRYPT_ONLY;
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ctl.Data_Len = sizeof(key);
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/* Expand the 56-bit key to 64-bits */
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extend_key_56_to_64(key_56, ctl.Crypto_Key);
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/* Set the key parity to odd */
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Curl_des_set_odd_parity((unsigned char *) ctl.Crypto_Key, ctl.Data_Len);
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/* Perform the encryption */
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_CIPHER((_SPCPTR *) &out, &ctl, (_SPCPTR *) &in);
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return TRUE;
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}
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#elif defined(USE_WIN32_CRYPTO)
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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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HCRYPTPROV hprov;
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HCRYPTKEY hkey;
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struct {
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BLOBHEADER hdr;
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unsigned int len;
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char key[8];
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} blob;
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DWORD len = 8;
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/* Acquire the crypto provider */
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if(!CryptAcquireContext(&hprov, NULL, NULL, PROV_RSA_FULL,
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CRYPT_VERIFYCONTEXT))
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return FALSE;
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/* Setup the key blob structure */
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memset(&blob, 0, sizeof(blob));
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blob.hdr.bType = PLAINTEXTKEYBLOB;
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blob.hdr.bVersion = 2;
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blob.hdr.aiKeyAlg = CALG_DES;
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blob.len = sizeof(blob.key);
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/* Expand the 56-bit key to 64-bits */
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extend_key_56_to_64(key_56, blob.key);
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/* Set the key parity to odd */
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Curl_des_set_odd_parity((unsigned char *) blob.key, sizeof(blob.key));
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/* Import the key */
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if(!CryptImportKey(hprov, (BYTE *) &blob, sizeof(blob), 0, 0, &hkey)) {
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CryptReleaseContext(hprov, 0);
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return FALSE;
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}
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memcpy(out, in, 8);
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/* Perform the encryption */
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CryptEncrypt(hkey, 0, FALSE, 0, out, &len, len);
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CryptDestroyKey(hkey);
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CryptReleaseContext(hprov, 0);
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return TRUE;
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}
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#endif /* defined(USE_WIN32_CRYPTO) */
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/*
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* takes a 21 byte array and treats it as 3 56-bit DES keys. The
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* 8 byte plaintext is encrypted with each key and the resulting 24
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* bytes are stored in the results array.
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*/
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void Curl_ntlm_core_lm_resp(const unsigned char *keys,
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const unsigned char *plaintext,
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unsigned char *results)
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{
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#ifdef USE_OPENSSL
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DES_key_schedule ks;
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setup_des_key(keys, DESKEY(ks));
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DES_ecb_encrypt((DES_cblock*) plaintext, (DES_cblock*) results,
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DESKEY(ks), DES_ENCRYPT);
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setup_des_key(keys + 7, DESKEY(ks));
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DES_ecb_encrypt((DES_cblock*) plaintext, (DES_cblock*) (results + 8),
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DESKEY(ks), DES_ENCRYPT);
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setup_des_key(keys + 14, DESKEY(ks));
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DES_ecb_encrypt((DES_cblock*) plaintext, (DES_cblock*) (results + 16),
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DESKEY(ks), DES_ENCRYPT);
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#elif defined(USE_GNUTLS_NETTLE)
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struct des_ctx des;
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setup_des_key(keys, &des);
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des_encrypt(&des, 8, results, plaintext);
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setup_des_key(keys + 7, &des);
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des_encrypt(&des, 8, results + 8, plaintext);
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setup_des_key(keys + 14, &des);
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des_encrypt(&des, 8, results + 16, plaintext);
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#elif defined(USE_GNUTLS)
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gcry_cipher_hd_t des;
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gcry_cipher_open(&des, GCRY_CIPHER_DES, GCRY_CIPHER_MODE_ECB, 0);
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setup_des_key(keys, &des);
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gcry_cipher_encrypt(des, results, 8, plaintext, 8);
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gcry_cipher_close(des);
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gcry_cipher_open(&des, GCRY_CIPHER_DES, GCRY_CIPHER_MODE_ECB, 0);
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setup_des_key(keys + 7, &des);
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gcry_cipher_encrypt(des, results + 8, 8, plaintext, 8);
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gcry_cipher_close(des);
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gcry_cipher_open(&des, GCRY_CIPHER_DES, GCRY_CIPHER_MODE_ECB, 0);
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setup_des_key(keys + 14, &des);
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gcry_cipher_encrypt(des, results + 16, 8, plaintext, 8);
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gcry_cipher_close(des);
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#elif defined(USE_NSS) || defined(USE_DARWINSSL) || defined(USE_OS400CRYPTO) \
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|| defined(USE_WIN32_CRYPTO)
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encrypt_des(plaintext, results, keys);
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encrypt_des(plaintext, results + 8, keys + 7);
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encrypt_des(plaintext, results + 16, keys + 14);
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#endif
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}
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/*
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* Set up lanmanager hashed password
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*/
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CURLcode Curl_ntlm_core_mk_lm_hash(struct SessionHandle *data,
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const char *password,
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unsigned char *lmbuffer /* 21 bytes */)
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{
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CURLcode result;
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unsigned char pw[14];
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static const unsigned char magic[] = {
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0x4B, 0x47, 0x53, 0x21, 0x40, 0x23, 0x24, 0x25 /* i.e. KGS!@#$% */
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};
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size_t len = CURLMIN(strlen(password), 14);
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Curl_strntoupper((char *)pw, password, len);
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memset(&pw[len], 0, 14 - len);
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/*
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* The LanManager hashed password needs to be created using the
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* password in the network encoding not the host encoding.
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*/
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result = Curl_convert_to_network(data, (char *)pw, 14);
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if(result)
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return result;
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{
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/* Create LanManager hashed password. */
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#ifdef USE_OPENSSL
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DES_key_schedule ks;
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setup_des_key(pw, DESKEY(ks));
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DES_ecb_encrypt((DES_cblock *)magic, (DES_cblock *)lmbuffer,
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DESKEY(ks), DES_ENCRYPT);
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setup_des_key(pw + 7, DESKEY(ks));
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DES_ecb_encrypt((DES_cblock *)magic, (DES_cblock *)(lmbuffer + 8),
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DESKEY(ks), DES_ENCRYPT);
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#elif defined(USE_GNUTLS_NETTLE)
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struct des_ctx des;
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setup_des_key(pw, &des);
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des_encrypt(&des, 8, lmbuffer, magic);
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setup_des_key(pw + 7, &des);
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des_encrypt(&des, 8, lmbuffer + 8, magic);
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#elif defined(USE_GNUTLS)
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gcry_cipher_hd_t des;
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gcry_cipher_open(&des, GCRY_CIPHER_DES, GCRY_CIPHER_MODE_ECB, 0);
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setup_des_key(pw, &des);
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gcry_cipher_encrypt(des, lmbuffer, 8, magic, 8);
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gcry_cipher_close(des);
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gcry_cipher_open(&des, GCRY_CIPHER_DES, GCRY_CIPHER_MODE_ECB, 0);
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setup_des_key(pw + 7, &des);
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gcry_cipher_encrypt(des, lmbuffer + 8, 8, magic, 8);
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gcry_cipher_close(des);
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#elif defined(USE_NSS) || defined(USE_DARWINSSL) || defined(USE_OS400CRYPTO) \
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|| defined(USE_WIN32_CRYPTO)
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encrypt_des(magic, lmbuffer, pw);
|
|
encrypt_des(magic, lmbuffer + 8, pw + 7);
|
|
#endif
|
|
|
|
memset(lmbuffer + 16, 0, 21 - 16);
|
|
}
|
|
|
|
return CURLE_OK;
|
|
}
|
|
|
|
#if USE_NTRESPONSES
|
|
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 USE_NTLM_V2 && !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)(toupper(src[i]));
|
|
dest[2 * i + 1] = '\0';
|
|
}
|
|
}
|
|
|
|
#endif /* USE_NTLM_V2 && !USE_WINDOWS_SSPI */
|
|
|
|
/*
|
|
* Set up nt hashed passwords
|
|
* @unittest: 1600
|
|
*/
|
|
CURLcode Curl_ntlm_core_mk_nt_hash(struct SessionHandle *data,
|
|
const char *password,
|
|
unsigned char *ntbuffer /* 21 bytes */)
|
|
{
|
|
size_t len = strlen(password);
|
|
unsigned char *pw = malloc(len * 2);
|
|
CURLcode result;
|
|
if(!pw)
|
|
return CURLE_OUT_OF_MEMORY;
|
|
|
|
ascii_to_unicode_le(pw, password, len);
|
|
|
|
/*
|
|
* The NT hashed password needs to be created using the password in the
|
|
* network encoding not the host encoding.
|
|
*/
|
|
result = Curl_convert_to_network(data, (char *)pw, len * 2);
|
|
if(result)
|
|
return result;
|
|
|
|
{
|
|
/* Create NT hashed password. */
|
|
#ifdef USE_OPENSSL
|
|
MD4_CTX MD4pw;
|
|
MD4_Init(&MD4pw);
|
|
MD4_Update(&MD4pw, pw, 2 * len);
|
|
MD4_Final(ntbuffer, &MD4pw);
|
|
#elif defined(USE_GNUTLS_NETTLE)
|
|
struct md4_ctx MD4pw;
|
|
md4_init(&MD4pw);
|
|
md4_update(&MD4pw, (unsigned int)(2 * len), pw);
|
|
md4_digest(&MD4pw, MD4_DIGEST_SIZE, ntbuffer);
|
|
#elif defined(USE_GNUTLS)
|
|
gcry_md_hd_t MD4pw;
|
|
gcry_md_open(&MD4pw, GCRY_MD_MD4, 0);
|
|
gcry_md_write(MD4pw, pw, 2 * len);
|
|
memcpy (ntbuffer, gcry_md_read (MD4pw, 0), MD4_DIGEST_LENGTH);
|
|
gcry_md_close(MD4pw);
|
|
#elif defined(USE_NSS) || defined(USE_OS400CRYPTO)
|
|
Curl_md4it(ntbuffer, pw, 2 * len);
|
|
#elif defined(USE_DARWINSSL)
|
|
(void)CC_MD4(pw, (CC_LONG)(2 * len), ntbuffer);
|
|
#elif defined(USE_WIN32_CRYPTO)
|
|
HCRYPTPROV hprov;
|
|
if(CryptAcquireContext(&hprov, NULL, NULL, PROV_RSA_FULL,
|
|
CRYPT_VERIFYCONTEXT)) {
|
|
HCRYPTHASH hhash;
|
|
if(CryptCreateHash(hprov, CALG_MD4, 0, 0, &hhash)) {
|
|
DWORD length = 16;
|
|
CryptHashData(hhash, pw, (unsigned int)len * 2, 0);
|
|
CryptGetHashParam(hhash, HP_HASHVAL, ntbuffer, &length, 0);
|
|
CryptDestroyHash(hhash);
|
|
}
|
|
CryptReleaseContext(hprov, 0);
|
|
}
|
|
#endif
|
|
|
|
memset(ntbuffer + 16, 0, 21 - 16);
|
|
}
|
|
|
|
free(pw);
|
|
|
|
return CURLE_OK;
|
|
}
|
|
|
|
#if USE_NTLM_V2 && !defined(USE_WINDOWS_SSPI)
|
|
|
|
/* This returns the HMAC MD5 digest */
|
|
CURLcode Curl_hmac_md5(const unsigned char *key, unsigned int keylen,
|
|
const unsigned char *data, unsigned int datalen,
|
|
unsigned char *output)
|
|
{
|
|
HMAC_context *ctxt = Curl_HMAC_init(Curl_HMAC_MD5, key, keylen);
|
|
|
|
if(!ctxt)
|
|
return CURLE_OUT_OF_MEMORY;
|
|
|
|
/* Update the digest with the given challenge */
|
|
Curl_HMAC_update(ctxt, data, datalen);
|
|
|
|
/* Finalise the digest */
|
|
Curl_HMAC_final(ctxt, output);
|
|
|
|
return CURLE_OK;
|
|
}
|
|
|
|
/* 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 = (userlen + domlen) * 2;
|
|
unsigned char *identity = malloc(identity_len);
|
|
CURLcode result = CURLE_OK;
|
|
|
|
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_hmac_md5(ntlmhash, 16, identity, curlx_uztoui(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[NTLM_HMAC_MD5_LEN];
|
|
curl_off_t tw;
|
|
|
|
CURLcode result = CURLE_OK;
|
|
|
|
#if CURL_SIZEOF_CURL_OFF_T < 8
|
|
#error "this section needs 64bit support to work"
|
|
#endif
|
|
|
|
/* Calculate the timestamp */
|
|
#ifdef DEBUGBUILD
|
|
char *force_timestamp = getenv("CURL_FORCETIME");
|
|
if(force_timestamp)
|
|
tw = CURL_OFF_T_C(11644473600) * 10000000;
|
|
else
|
|
#endif
|
|
tw = ((curl_off_t)time(NULL) + CURL_OFF_T_C(11644473600)) * 10000000;
|
|
|
|
/* Calculate the response len */
|
|
len = NTLM_HMAC_MD5_LEN + NTLMv2_BLOB_LEN;
|
|
|
|
/* Allocate the response */
|
|
ptr = malloc(len);
|
|
if(!ptr)
|
|
return CURLE_OUT_OF_MEMORY;
|
|
|
|
memset(ptr, 0, len);
|
|
|
|
/* Create the BLOB structure */
|
|
snprintf((char *)ptr + NTLM_HMAC_MD5_LEN, NTLMv2_BLOB_LEN,
|
|
NTLMv2_BLOB_SIGNATURE
|
|
"%c%c%c%c", /* Reserved = 0 */
|
|
0, 0, 0, 0);
|
|
|
|
Curl_write64_le(tw, ptr + 24);
|
|
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_hmac_md5(ntlmv2hash, NTLM_HMAC_MD5_LEN, 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, NTLM_HMAC_MD5_LEN);
|
|
|
|
/* 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_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_NTLM_V2 && !USE_WINDOWS_SSPI */
|
|
|
|
#endif /* USE_NTRESPONSES */
|
|
|
|
#endif /* !USE_WINDOWS_SSPI || USE_WIN32_CRYPTO */
|
|
|
|
#endif /* USE_NTLM */
|