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-rw-r--r--src/openvpn/ntlm.c188
1 files changed, 0 insertions, 188 deletions
diff --git a/src/openvpn/ntlm.c b/src/openvpn/ntlm.c
deleted file mode 100644
index 4e12047..0000000
--- a/src/openvpn/ntlm.c
+++ /dev/null
@@ -1,188 +0,0 @@
-/*
- * ntlm proxy support for OpenVPN
- *
- * Copyright (C) 2004 William Preston
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program (see the file COPYING included with this
- * distribution); if not, write to the Free Software Foundation, Inc.,
- * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- */
-
-#ifdef WIN32
-#include "config-win32.h"
-#else
-#include "config.h"
-#endif
-
-#include "syshead.h"
-
-#if NTLM
-
-#include "common.h"
-#include "buffer.h"
-#include "misc.h"
-#include "socket.h"
-#include "fdmisc.h"
-#include "proxy.h"
-#include "ntlm.h"
-#include "base64.h"
-#include "crypto.h"
-
-#include "memdbg.h"
-
-static void
-create_des_keys(const unsigned char *hash, unsigned char *key)
-{
- key[0] = hash[0];
- key[1] = ((hash[0]&1)<<7)|(hash[1]>>1);
- key[2] = ((hash[1]&3)<<6)|(hash[2]>>2);
- key[3] = ((hash[2]&7)<<5)|(hash[3]>>3);
- key[4] = ((hash[3]&15)<<4)|(hash[4]>>4);
- key[5] = ((hash[4]&31)<<3)|(hash[5]>>5);
- key[6] = ((hash[5]&63)<<2)|(hash[6]>>6);
- key[7] = ((hash[6]&127)<<1);
- des_set_odd_parity((des_cblock *)key);
-}
-
-static void
-gen_md4_hash (const char* data, int data_len, char *result)
-{
- /* result is 16 byte md4 hash */
-
- MD4_CTX c;
- char md[16];
-
- MD4_Init (&c);
- MD4_Update (&c, data, data_len);
- MD4_Final ((unsigned char *)md, &c);
-
- memcpy (result, md, 16);
-}
-
-static int
-unicodize (char *dst, const char *src)
-{
- /* not really unicode... */
- int i = 0;
- do
- {
- dst[i++] = *src;
- dst[i++] = 0;
- }
- while (*src++);
-
- return i;
-}
-
-const char *
-ntlm_phase_1 (const struct http_proxy_info *p, struct gc_arena *gc)
-{
- struct buffer out = alloc_buf_gc (96, gc);
- /* try a minimal NTLM handshake
- *
- * http://davenport.sourceforge.net/ntlm.html
- *
- * This message contains only the NTLMSSP signature,
- * the NTLM message type,
- * and the minimal set of flags (Negotiate NTLM and Negotiate OEM).
- *
- */
- buf_printf (&out, "%s", "TlRMTVNTUAABAAAAAgIAAA==");
- return (BSTR (&out));
-}
-
-const char *
-ntlm_phase_3 (const struct http_proxy_info *p, const char *phase_2, struct gc_arena *gc)
-{
- char pwbuf[sizeof (p->up.password) * 2]; /* for unicode password */
- char buf2[128]; /* decoded reply from proxy */
- char phase3[146];
-
- char md4_hash[21];
- char challenge[8], response[24];
- int i, ret_val, buflen;
- des_cblock key1, key2, key3;
- des_key_schedule sched1, sched2, sched3;
-
- /* try a minimal NTLM handshake
- *
- * http://davenport.sourceforge.net/ntlm.html
- *
- */
- ASSERT (strlen (p->up.username) > 0);
- ASSERT (strlen (p->up.password) > 0);
-
- /* fill 1st 16 bytes with md4 hash, disregard terminating null */
- gen_md4_hash (pwbuf, unicodize (pwbuf, p->up.password) - 2, md4_hash);
-
- /* pad to 21 bytes */
- memset (md4_hash + 16, 0, 5);
-
- ret_val = base64_decode( phase_2, (void *)buf2);
- /* we can be sure that phase_2 is less than 128
- * therefore buf2 needs to be (3/4 * 128) */
-
- /* extract the challenge from bytes 24-31 */
- for (i=0; i<8; i++)
- {
- challenge[i] = buf2[i+24];
- }
-
- create_des_keys ((unsigned char *)md4_hash, key1);
- des_set_key_unchecked ((des_cblock *)key1, sched1);
- des_ecb_encrypt ((des_cblock *)challenge, (des_cblock *)response, sched1, DES_ENCRYPT);
-
- create_des_keys ((unsigned char *)&(md4_hash[7]), key2);
- des_set_key_unchecked ((des_cblock *)key2, sched2);
- des_ecb_encrypt ((des_cblock *)challenge, (des_cblock *)&(response[8]), sched2, DES_ENCRYPT);
-
- create_des_keys ((unsigned char *)&(md4_hash[14]), key3);
- des_set_key_unchecked ((des_cblock *)key3, sched3);
- des_ecb_encrypt ((des_cblock *)challenge, (des_cblock *)&(response[16]), sched3, DES_ENCRYPT);
-
- /* clear reply */
- memset (phase3, 0, sizeof (phase3));
-
- strcpy (phase3, "NTLMSSP\0");
- phase3[8] = 3; /* type 3 */
-
- buflen = 0x58 + strlen (p->up.username);
- if (buflen > (int) sizeof (phase3))
- buflen = sizeof (phase3);
-
- phase3[0x10] = buflen; /* lm not used */
- phase3[0x20] = buflen; /* default domain (i.e. proxy's domain) */
- phase3[0x30] = buflen; /* no workstation name supplied */
- phase3[0x38] = buflen; /* no session key */
-
- phase3[0x14] = 24; /* ntlm response is 24 bytes long */
- phase3[0x16] = phase3[0x14];
- phase3[0x18] = 0x40; /* ntlm offset */
- memcpy (&(phase3[0x40]), response, 24);
-
-
- phase3[0x24] = strlen (p->up.username); /* username in ascii */
- phase3[0x26] = phase3[0x24];
- phase3[0x28] = 0x58;
- strncpy (&(phase3[0x58]), p->up.username, sizeof (phase3) - 0x58);
-
- phase3[0x3c] = 0x02; /* negotiate oem */
- phase3[0x3d] = 0x02; /* negotiate ntlm */
-
- return ((const char *)make_base64_string2 ((unsigned char *)phase3, buflen, gc));
-}
-
-#else
-static void dummy(void) {}
-#endif