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7aa95afadd
Allow NTLM authentication when building using SecureTransport (Darwin) for SSL. This uses CommonCrypto, a cryptography library that ships with all versions of iOS and Mac OS X. It's like OpenSSL's libcrypto, except that it's missing a few less-common cyphers and doesn't have a big number data structure.
437 lines
13 KiB
C
437 lines
13 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 - 2012, 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 http://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 "setup.h"
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#if defined(USE_NTLM) && !defined(USE_WINDOWS_SSPI)
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/*
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* NTLM details:
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*
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* 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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#ifdef USE_SSLEAY
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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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#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_memory.h"
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#include "curl_ntlm_core.h"
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#define _MPRINTF_REPLACE /* use our functions only */
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#include <curl/mprintf.h>
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/* The last #include file should be: */
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#include "memdebug.h"
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#ifdef USE_SSLEAY
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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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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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DES_set_odd_parity(&key);
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DES_set_key(&key, ks);
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}
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#else /* defined(USE_SSLEAY) */
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/*
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* Turns a 56 bit key into the 64 bit, odd parity key. Used by GnuTLS and NSS.
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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_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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extend_key_56_to_64(key_56, 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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extend_key_56_to_64(key_56, key);
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gcry_cipher_setkey(*des, key, 8);
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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 bit and wrap by NSS */
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extend_key_56_to_64(key_56, key);
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key_item.data = (unsigned char *)key;
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key_item.len = /* hard-wired */ 8;
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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 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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extend_key_56_to_64(key_56, key);
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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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#endif /* defined(USE_DARWINSSL) */
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#endif /* defined(USE_SSLEAY) */
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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_SSLEAY
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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)
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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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void 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 res;
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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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res = Curl_convert_to_network(data, (char *)pw, 14);
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if(res)
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return;
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{
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/* Create LanManager hashed password. */
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#ifdef USE_SSLEAY
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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)
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encrypt_des(magic, lmbuffer, pw);
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encrypt_des(magic, lmbuffer + 8, pw + 7);
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#endif
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memset(lmbuffer + 16, 0, 21 - 16);
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}
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}
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#if USE_NTRESPONSES
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static void ascii_to_unicode_le(unsigned char *dest, const char *src,
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size_t srclen)
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{
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size_t i;
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for(i = 0; i < srclen; i++) {
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dest[2 * i] = (unsigned char)src[i];
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dest[2 * i + 1] = '\0';
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}
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}
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/*
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* Set up nt hashed passwords
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*/
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CURLcode Curl_ntlm_core_mk_nt_hash(struct SessionHandle *data,
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const char *password,
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unsigned char *ntbuffer /* 21 bytes */)
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{
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size_t len = strlen(password);
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unsigned char *pw = malloc(len * 2);
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CURLcode result;
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if(!pw)
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return CURLE_OUT_OF_MEMORY;
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ascii_to_unicode_le(pw, password, len);
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/*
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* The NT hashed password needs to be created using the password in the
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* network encoding not the host encoding.
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*/
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result = Curl_convert_to_network(data, (char *)pw, len * 2);
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if(result)
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return result;
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{
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/* Create NT hashed password. */
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#ifdef USE_SSLEAY
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MD4_CTX MD4pw;
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MD4_Init(&MD4pw);
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MD4_Update(&MD4pw, pw, 2 * len);
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MD4_Final(ntbuffer, &MD4pw);
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#elif defined(USE_GNUTLS_NETTLE)
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struct md4_ctx MD4pw;
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md4_init(&MD4pw);
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md4_update(&MD4pw, (unsigned int)(2 * len), pw);
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md4_digest(&MD4pw, MD4_DIGEST_SIZE, ntbuffer);
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#elif defined(USE_GNUTLS)
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gcry_md_hd_t MD4pw;
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gcry_md_open(&MD4pw, GCRY_MD_MD4, 0);
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gcry_md_write(MD4pw, pw, 2 * len);
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memcpy (ntbuffer, gcry_md_read (MD4pw, 0), MD4_DIGEST_LENGTH);
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gcry_md_close(MD4pw);
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#elif defined(USE_NSS)
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Curl_md4it(ntbuffer, pw, 2 * len);
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#elif defined(USE_DARWINSSL)
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(void)CC_MD4(pw, 2 * len, ntbuffer);
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#endif
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memset(ntbuffer + 16, 0, 21 - 16);
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}
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free(pw);
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return CURLE_OK;
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}
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#endif /* USE_NTRESPONSES */
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#endif /* USE_NTLM && !USE_WINDOWS_SSPI */
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