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Adam Green / Mbed 2 deprecated WeatherStation

Web server based weather station using Sparkfun Weather Meters.

Dependencies: FatFileSystem mbed WeatherMeters SDFileSystem

NetStack/lwip/netif/ppp/chpms.c@0:616601bde9fb, 2012-02-23 (annotated)

Committer:: AdamGreen
Date:: Thu Feb 23 21:38:39 2012 +0000
Revision:: 0:616601bde9fb

Who changed what in which revision?

User	Revision	Line number	New contents of line
AdamGreen	0:616601bde9fb	1	/* WARNING - THIS CODE HAS NOT BEEN FINISHED! */
AdamGreen	0:616601bde9fb	2	/*** The original PPPD code is written in a way to require either the UNIX DES
AdamGreen	0:616601bde9fb	3	encryption functions encrypt(3) and setkey(3) or the DES library libdes.
AdamGreen	0:616601bde9fb	4	Since both is not included in lwIP, MSCHAP currently does not work! */
AdamGreen	0:616601bde9fb	5	/*****************************************************************************
AdamGreen	0:616601bde9fb	6	* chpms.c - Network MicroSoft Challenge Handshake Authentication Protocol program file.
AdamGreen	0:616601bde9fb	7	*
AdamGreen	0:616601bde9fb	8	* Copyright (c) 2003 by Marc Boucher, Services Informatiques (MBSI) inc.
AdamGreen	0:616601bde9fb	9	* Copyright (c) 1997 by Global Election Systems Inc. All rights reserved.
AdamGreen	0:616601bde9fb	10	*
AdamGreen	0:616601bde9fb	11	* The authors hereby grant permission to use, copy, modify, distribute,
AdamGreen	0:616601bde9fb	12	* and license this software and its documentation for any purpose, provided
AdamGreen	0:616601bde9fb	13	* that existing copyright notices are retained in all copies and that this
AdamGreen	0:616601bde9fb	14	* notice and the following disclaimer are included verbatim in any
AdamGreen	0:616601bde9fb	15	* distributions. No written agreement, license, or royalty fee is required
AdamGreen	0:616601bde9fb	16	* for any of the authorized uses.
AdamGreen	0:616601bde9fb	17	*
AdamGreen	0:616601bde9fb	18	* THIS SOFTWARE IS PROVIDED BY THE CONTRIBUTORS AS IS AND ANY EXPRESS OR
AdamGreen	0:616601bde9fb	19	* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
AdamGreen	0:616601bde9fb	20	* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
AdamGreen	0:616601bde9fb	21	* IN NO EVENT SHALL THE CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
AdamGreen	0:616601bde9fb	22	* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
AdamGreen	0:616601bde9fb	23	* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
AdamGreen	0:616601bde9fb	24	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
AdamGreen	0:616601bde9fb	25	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
AdamGreen	0:616601bde9fb	26	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
AdamGreen	0:616601bde9fb	27	* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
AdamGreen	0:616601bde9fb	28	*
AdamGreen	0:616601bde9fb	29	******************************************************************************
AdamGreen	0:616601bde9fb	30	* REVISION HISTORY
AdamGreen	0:616601bde9fb	31	*
AdamGreen	0:616601bde9fb	32	* 03-01-01 Marc Boucher <marc@mbsi.ca>
AdamGreen	0:616601bde9fb	33	* Ported to lwIP.
AdamGreen	0:616601bde9fb	34	* 97-12-08 Guy Lancaster <lancasterg@acm.org>, Global Election Systems Inc.
AdamGreen	0:616601bde9fb	35	* Original based on BSD chap_ms.c.
AdamGreen	0:616601bde9fb	36	*****************************************************************************/
AdamGreen	0:616601bde9fb	37	/*
AdamGreen	0:616601bde9fb	38	* chap_ms.c - Microsoft MS-CHAP compatible implementation.
AdamGreen	0:616601bde9fb	39	*
AdamGreen	0:616601bde9fb	40	* Copyright (c) 1995 Eric Rosenquist, Strata Software Limited.
AdamGreen	0:616601bde9fb	41	* http://www.strataware.com/
AdamGreen	0:616601bde9fb	42	*
AdamGreen	0:616601bde9fb	43	* All rights reserved.
AdamGreen	0:616601bde9fb	44	*
AdamGreen	0:616601bde9fb	45	* Redistribution and use in source and binary forms are permitted
AdamGreen	0:616601bde9fb	46	* provided that the above copyright notice and this paragraph are
AdamGreen	0:616601bde9fb	47	* duplicated in all such forms and that any documentation,
AdamGreen	0:616601bde9fb	48	* advertising materials, and other materials related to such
AdamGreen	0:616601bde9fb	49	* distribution and use acknowledge that the software was developed
AdamGreen	0:616601bde9fb	50	* by Eric Rosenquist. The name of the author may not be used to
AdamGreen	0:616601bde9fb	51	* endorse or promote products derived from this software without
AdamGreen	0:616601bde9fb	52	* specific prior written permission.
AdamGreen	0:616601bde9fb	53	*
AdamGreen	0:616601bde9fb	54	* THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
AdamGreen	0:616601bde9fb	55	* IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
AdamGreen	0:616601bde9fb	56	* WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
AdamGreen	0:616601bde9fb	57	*/
AdamGreen	0:616601bde9fb	58
AdamGreen	0:616601bde9fb	59	/*
AdamGreen	0:616601bde9fb	60	* Modifications by Lauri Pesonen / lpesonen@clinet.fi, april 1997
AdamGreen	0:616601bde9fb	61	*
AdamGreen	0:616601bde9fb	62	* Implemented LANManager type password response to MS-CHAP challenges.
AdamGreen	0:616601bde9fb	63	* Now pppd provides both NT style and LANMan style blocks, and the
AdamGreen	0:616601bde9fb	64	* prefered is set by option "ms-lanman". Default is to use NT.
AdamGreen	0:616601bde9fb	65	* The hash text (StdText) was taken from Win95 RASAPI32.DLL.
AdamGreen	0:616601bde9fb	66	*
AdamGreen	0:616601bde9fb	67	* You should also use DOMAIN\\USERNAME as described in README.MSCHAP80
AdamGreen	0:616601bde9fb	68	*/
AdamGreen	0:616601bde9fb	69
AdamGreen	0:616601bde9fb	70	#define USE_CRYPT
AdamGreen	0:616601bde9fb	71
AdamGreen	0:616601bde9fb	72	#include "lwip/opt.h"
AdamGreen	0:616601bde9fb	73
AdamGreen	0:616601bde9fb	74	#if PPP_SUPPORT /* don't build if not configured for use in lwipopts.h */
AdamGreen	0:616601bde9fb	75
AdamGreen	0:616601bde9fb	76	#if MSCHAP_SUPPORT /* don't build if not configured for use in lwipopts.h */
AdamGreen	0:616601bde9fb	77
AdamGreen	0:616601bde9fb	78	#include "ppp.h"
AdamGreen	0:616601bde9fb	79	#include "pppdebug.h"
AdamGreen	0:616601bde9fb	80
AdamGreen	0:616601bde9fb	81	#include "md4.h"
AdamGreen	0:616601bde9fb	82	#ifndef USE_CRYPT
AdamGreen	0:616601bde9fb	83	#include "des.h"
AdamGreen	0:616601bde9fb	84	#endif
AdamGreen	0:616601bde9fb	85	#include "chap.h"
AdamGreen	0:616601bde9fb	86	#include "chpms.h"
AdamGreen	0:616601bde9fb	87
AdamGreen	0:616601bde9fb	88	#include <string.h>
AdamGreen	0:616601bde9fb	89
AdamGreen	0:616601bde9fb	90
AdamGreen	0:616601bde9fb	91	/*************************/
AdamGreen	0:616601bde9fb	92	/* LOCAL DEFINITIONS */
AdamGreen	0:616601bde9fb	93	/*************************/
AdamGreen	0:616601bde9fb	94
AdamGreen	0:616601bde9fb	95
AdamGreen	0:616601bde9fb	96	/************************/
AdamGreen	0:616601bde9fb	97	/* LOCAL DATA TYPES */
AdamGreen	0:616601bde9fb	98	/************************/
AdamGreen	0:616601bde9fb	99	typedef struct {
AdamGreen	0:616601bde9fb	100	u_char LANManResp[24];
AdamGreen	0:616601bde9fb	101	u_char NTResp[24];
AdamGreen	0:616601bde9fb	102	u_char UseNT; /* If 1, ignore the LANMan response field */
AdamGreen	0:616601bde9fb	103	} MS_ChapResponse;
AdamGreen	0:616601bde9fb	104	/* We use MS_CHAP_RESPONSE_LEN, rather than sizeof(MS_ChapResponse),
AdamGreen	0:616601bde9fb	105	in case this struct gets padded. */
AdamGreen	0:616601bde9fb	106
AdamGreen	0:616601bde9fb	107
AdamGreen	0:616601bde9fb	108
AdamGreen	0:616601bde9fb	109	/***********************************/
AdamGreen	0:616601bde9fb	110	/* LOCAL FUNCTION DECLARATIONS */
AdamGreen	0:616601bde9fb	111	/***********************************/
AdamGreen	0:616601bde9fb	112
AdamGreen	0:616601bde9fb	113	/* XXX Don't know what to do with these. */
AdamGreen	0:616601bde9fb	114	extern void setkey(const char *);
AdamGreen	0:616601bde9fb	115	extern void encrypt(char *, int);
AdamGreen	0:616601bde9fb	116
AdamGreen	0:616601bde9fb	117	static void DesEncrypt (u_char , u_char , u_char *);
AdamGreen	0:616601bde9fb	118	static void MakeKey (u_char , u_char );
AdamGreen	0:616601bde9fb	119
AdamGreen	0:616601bde9fb	120	#ifdef USE_CRYPT
AdamGreen	0:616601bde9fb	121	static void Expand (u_char , u_char );
AdamGreen	0:616601bde9fb	122	static void Collapse (u_char , u_char );
AdamGreen	0:616601bde9fb	123	#endif
AdamGreen	0:616601bde9fb	124
AdamGreen	0:616601bde9fb	125	static void ChallengeResponse(
AdamGreen	0:616601bde9fb	126	u_char challenge, / IN 8 octets */
AdamGreen	0:616601bde9fb	127	u_char pwHash, / IN 16 octets */
AdamGreen	0:616601bde9fb	128	u_char response / OUT 24 octets */
AdamGreen	0:616601bde9fb	129	);
AdamGreen	0:616601bde9fb	130	static void ChapMS_NT(
AdamGreen	0:616601bde9fb	131	char *rchallenge,
AdamGreen	0:616601bde9fb	132	int rchallenge_len,
AdamGreen	0:616601bde9fb	133	char *secret,
AdamGreen	0:616601bde9fb	134	int secret_len,
AdamGreen	0:616601bde9fb	135	MS_ChapResponse *response
AdamGreen	0:616601bde9fb	136	);
AdamGreen	0:616601bde9fb	137	static u_char Get7Bits(
AdamGreen	0:616601bde9fb	138	u_char *input,
AdamGreen	0:616601bde9fb	139	int startBit
AdamGreen	0:616601bde9fb	140	);
AdamGreen	0:616601bde9fb	141
AdamGreen	0:616601bde9fb	142	static void
AdamGreen	0:616601bde9fb	143	ChallengeResponse( u_char challenge, / IN 8 octets */
AdamGreen	0:616601bde9fb	144	u_char pwHash, / IN 16 octets */
AdamGreen	0:616601bde9fb	145	u_char response / OUT 24 octets */)
AdamGreen	0:616601bde9fb	146	{
AdamGreen	0:616601bde9fb	147	u_char ZPasswordHash[21];
AdamGreen	0:616601bde9fb	148
AdamGreen	0:616601bde9fb	149	BZERO(ZPasswordHash, sizeof(ZPasswordHash));
AdamGreen	0:616601bde9fb	150	BCOPY(pwHash, ZPasswordHash, 16);
AdamGreen	0:616601bde9fb	151
AdamGreen	0:616601bde9fb	152	#if 0
AdamGreen	0:616601bde9fb	153	log_packet(ZPasswordHash, sizeof(ZPasswordHash), "ChallengeResponse - ZPasswordHash", LOG_DEBUG);
AdamGreen	0:616601bde9fb	154	#endif
AdamGreen	0:616601bde9fb	155
AdamGreen	0:616601bde9fb	156	DesEncrypt(challenge, ZPasswordHash + 0, response + 0);
AdamGreen	0:616601bde9fb	157	DesEncrypt(challenge, ZPasswordHash + 7, response + 8);
AdamGreen	0:616601bde9fb	158	DesEncrypt(challenge, ZPasswordHash + 14, response + 16);
AdamGreen	0:616601bde9fb	159
AdamGreen	0:616601bde9fb	160	#if 0
AdamGreen	0:616601bde9fb	161	log_packet(response, 24, "ChallengeResponse - response", LOG_DEBUG);
AdamGreen	0:616601bde9fb	162	#endif
AdamGreen	0:616601bde9fb	163	}
AdamGreen	0:616601bde9fb	164
AdamGreen	0:616601bde9fb	165
AdamGreen	0:616601bde9fb	166	#ifdef USE_CRYPT
AdamGreen	0:616601bde9fb	167	static void
AdamGreen	0:616601bde9fb	168	DesEncrypt( u_char clear, / IN 8 octets */
AdamGreen	0:616601bde9fb	169	u_char key, / IN 7 octets */
AdamGreen	0:616601bde9fb	170	u_char cipher / OUT 8 octets */)
AdamGreen	0:616601bde9fb	171	{
AdamGreen	0:616601bde9fb	172	u_char des_key[8];
AdamGreen	0:616601bde9fb	173	u_char crypt_key[66];
AdamGreen	0:616601bde9fb	174	u_char des_input[66];
AdamGreen	0:616601bde9fb	175
AdamGreen	0:616601bde9fb	176	MakeKey(key, des_key);
AdamGreen	0:616601bde9fb	177
AdamGreen	0:616601bde9fb	178	Expand(des_key, crypt_key);
AdamGreen	0:616601bde9fb	179	setkey((char*)crypt_key);
AdamGreen	0:616601bde9fb	180
AdamGreen	0:616601bde9fb	181	#if 0
AdamGreen	0:616601bde9fb	182	CHAPDEBUG(LOG_INFO, ("DesEncrypt: 8 octet input : %02X%02X%02X%02X%02X%02X%02X%02X\n",
AdamGreen	0:616601bde9fb	183	clear[0], clear[1], clear[2], clear[3], clear[4], clear[5], clear[6], clear[7]));
AdamGreen	0:616601bde9fb	184	#endif
AdamGreen	0:616601bde9fb	185
AdamGreen	0:616601bde9fb	186	Expand(clear, des_input);
AdamGreen	0:616601bde9fb	187	encrypt((char*)des_input, 0);
AdamGreen	0:616601bde9fb	188	Collapse(des_input, cipher);
AdamGreen	0:616601bde9fb	189
AdamGreen	0:616601bde9fb	190	#if 0
AdamGreen	0:616601bde9fb	191	CHAPDEBUG(LOG_INFO, ("DesEncrypt: 8 octet output: %02X%02X%02X%02X%02X%02X%02X%02X\n",
AdamGreen	0:616601bde9fb	192	cipher[0], cipher[1], cipher[2], cipher[3], cipher[4], cipher[5], cipher[6], cipher[7]));
AdamGreen	0:616601bde9fb	193	#endif
AdamGreen	0:616601bde9fb	194	}
AdamGreen	0:616601bde9fb	195
AdamGreen	0:616601bde9fb	196	#else /* USE_CRYPT */
AdamGreen	0:616601bde9fb	197
AdamGreen	0:616601bde9fb	198	static void
AdamGreen	0:616601bde9fb	199	DesEncrypt( u_char clear, / IN 8 octets */
AdamGreen	0:616601bde9fb	200	u_char key, / IN 7 octets */
AdamGreen	0:616601bde9fb	201	u_char cipher / OUT 8 octets */)
AdamGreen	0:616601bde9fb	202	{
AdamGreen	0:616601bde9fb	203	des_cblock des_key;
AdamGreen	0:616601bde9fb	204	des_key_schedule key_schedule;
AdamGreen	0:616601bde9fb	205
AdamGreen	0:616601bde9fb	206	MakeKey(key, des_key);
AdamGreen	0:616601bde9fb	207
AdamGreen	0:616601bde9fb	208	des_set_key(&des_key, key_schedule);
AdamGreen	0:616601bde9fb	209
AdamGreen	0:616601bde9fb	210	#if 0
AdamGreen	0:616601bde9fb	211	CHAPDEBUG(LOG_INFO, ("DesEncrypt: 8 octet input : %02X%02X%02X%02X%02X%02X%02X%02X\n",
AdamGreen	0:616601bde9fb	212	clear[0], clear[1], clear[2], clear[3], clear[4], clear[5], clear[6], clear[7]));
AdamGreen	0:616601bde9fb	213	#endif
AdamGreen	0:616601bde9fb	214
AdamGreen	0:616601bde9fb	215	des_ecb_encrypt((des_cblock )clear, (des_cblock )cipher, key_schedule, 1);
AdamGreen	0:616601bde9fb	216
AdamGreen	0:616601bde9fb	217	#if 0
AdamGreen	0:616601bde9fb	218	CHAPDEBUG(LOG_INFO, ("DesEncrypt: 8 octet output: %02X%02X%02X%02X%02X%02X%02X%02X\n",
AdamGreen	0:616601bde9fb	219	cipher[0], cipher[1], cipher[2], cipher[3], cipher[4], cipher[5], cipher[6], cipher[7]));
AdamGreen	0:616601bde9fb	220	#endif
AdamGreen	0:616601bde9fb	221	}
AdamGreen	0:616601bde9fb	222
AdamGreen	0:616601bde9fb	223	#endif /* USE_CRYPT */
AdamGreen	0:616601bde9fb	224
AdamGreen	0:616601bde9fb	225
AdamGreen	0:616601bde9fb	226	static u_char
AdamGreen	0:616601bde9fb	227	Get7Bits( u_char *input, int startBit)
AdamGreen	0:616601bde9fb	228	{
AdamGreen	0:616601bde9fb	229	register unsigned int word;
AdamGreen	0:616601bde9fb	230
AdamGreen	0:616601bde9fb	231	word = (unsigned)input[startBit / 8] << 8;
AdamGreen	0:616601bde9fb	232	word \|= (unsigned)input[startBit / 8 + 1];
AdamGreen	0:616601bde9fb	233
AdamGreen	0:616601bde9fb	234	word >>= 15 - (startBit % 8 + 7);
AdamGreen	0:616601bde9fb	235
AdamGreen	0:616601bde9fb	236	return word & 0xFE;
AdamGreen	0:616601bde9fb	237	}
AdamGreen	0:616601bde9fb	238
AdamGreen	0:616601bde9fb	239	#ifdef USE_CRYPT
AdamGreen	0:616601bde9fb	240
AdamGreen	0:616601bde9fb	241	/* in == 8-byte string (expanded version of the 56-bit key)
AdamGreen	0:616601bde9fb	242	* out == 64-byte string where each byte is either 1 or 0
AdamGreen	0:616601bde9fb	243	* Note that the low-order "bit" is always ignored by by setkey()
AdamGreen	0:616601bde9fb	244	*/
AdamGreen	0:616601bde9fb	245	static void
AdamGreen	0:616601bde9fb	246	Expand(u_char in, u_char out)
AdamGreen	0:616601bde9fb	247	{
AdamGreen	0:616601bde9fb	248	int j, c;
AdamGreen	0:616601bde9fb	249	int i;
AdamGreen	0:616601bde9fb	250
AdamGreen	0:616601bde9fb	251	for(i = 0; i < 64; in++){
AdamGreen	0:616601bde9fb	252	c = *in;
AdamGreen	0:616601bde9fb	253	for(j = 7; j >= 0; j--) {
AdamGreen	0:616601bde9fb	254	*out++ = (c >> j) & 01;
AdamGreen	0:616601bde9fb	255	}
AdamGreen	0:616601bde9fb	256	i += 8;
AdamGreen	0:616601bde9fb	257	}
AdamGreen	0:616601bde9fb	258	}
AdamGreen	0:616601bde9fb	259
AdamGreen	0:616601bde9fb	260	/* The inverse of Expand
AdamGreen	0:616601bde9fb	261	*/
AdamGreen	0:616601bde9fb	262	static void
AdamGreen	0:616601bde9fb	263	Collapse(u_char in, u_char out)
AdamGreen	0:616601bde9fb	264	{
AdamGreen	0:616601bde9fb	265	int j;
AdamGreen	0:616601bde9fb	266	int i;
AdamGreen	0:616601bde9fb	267	unsigned int c;
AdamGreen	0:616601bde9fb	268
AdamGreen	0:616601bde9fb	269	for (i = 0; i < 64; i += 8, out++) {
AdamGreen	0:616601bde9fb	270	c = 0;
AdamGreen	0:616601bde9fb	271	for (j = 7; j >= 0; j--, in++) {
AdamGreen	0:616601bde9fb	272	c \|= *in << j;
AdamGreen	0:616601bde9fb	273	}
AdamGreen	0:616601bde9fb	274	*out = c & 0xff;
AdamGreen	0:616601bde9fb	275	}
AdamGreen	0:616601bde9fb	276	}
AdamGreen	0:616601bde9fb	277	#endif
AdamGreen	0:616601bde9fb	278
AdamGreen	0:616601bde9fb	279	static void
AdamGreen	0:616601bde9fb	280	MakeKey( u_char key, / IN 56 bit DES key missing parity bits */
AdamGreen	0:616601bde9fb	281	u_char des_key / OUT 64 bit DES key with parity bits added */)
AdamGreen	0:616601bde9fb	282	{
AdamGreen	0:616601bde9fb	283	des_key[0] = Get7Bits(key, 0);
AdamGreen	0:616601bde9fb	284	des_key[1] = Get7Bits(key, 7);
AdamGreen	0:616601bde9fb	285	des_key[2] = Get7Bits(key, 14);
AdamGreen	0:616601bde9fb	286	des_key[3] = Get7Bits(key, 21);
AdamGreen	0:616601bde9fb	287	des_key[4] = Get7Bits(key, 28);
AdamGreen	0:616601bde9fb	288	des_key[5] = Get7Bits(key, 35);
AdamGreen	0:616601bde9fb	289	des_key[6] = Get7Bits(key, 42);
AdamGreen	0:616601bde9fb	290	des_key[7] = Get7Bits(key, 49);
AdamGreen	0:616601bde9fb	291
AdamGreen	0:616601bde9fb	292	#ifndef USE_CRYPT
AdamGreen	0:616601bde9fb	293	des_set_odd_parity((des_cblock *)des_key);
AdamGreen	0:616601bde9fb	294	#endif
AdamGreen	0:616601bde9fb	295
AdamGreen	0:616601bde9fb	296	#if 0
AdamGreen	0:616601bde9fb	297	CHAPDEBUG(LOG_INFO, ("MakeKey: 56-bit input : %02X%02X%02X%02X%02X%02X%02X\n",
AdamGreen	0:616601bde9fb	298	key[0], key[1], key[2], key[3], key[4], key[5], key[6]));
AdamGreen	0:616601bde9fb	299	CHAPDEBUG(LOG_INFO, ("MakeKey: 64-bit output: %02X%02X%02X%02X%02X%02X%02X%02X\n",
AdamGreen	0:616601bde9fb	300	des_key[0], des_key[1], des_key[2], des_key[3], des_key[4], des_key[5], des_key[6], des_key[7]));
AdamGreen	0:616601bde9fb	301	#endif
AdamGreen	0:616601bde9fb	302	}
AdamGreen	0:616601bde9fb	303
AdamGreen	0:616601bde9fb	304	static void
AdamGreen	0:616601bde9fb	305	ChapMS_NT( char *rchallenge,
AdamGreen	0:616601bde9fb	306	int rchallenge_len,
AdamGreen	0:616601bde9fb	307	char *secret,
AdamGreen	0:616601bde9fb	308	int secret_len,
AdamGreen	0:616601bde9fb	309	MS_ChapResponse *response)
AdamGreen	0:616601bde9fb	310	{
AdamGreen	0:616601bde9fb	311	int i;
AdamGreen	0:616601bde9fb	312	MDstruct md4Context;
AdamGreen	0:616601bde9fb	313	u_char unicodePassword[MAX_NT_PASSWORD * 2];
AdamGreen	0:616601bde9fb	314	static int low_byte_first = -1;
AdamGreen	0:616601bde9fb	315
AdamGreen	0:616601bde9fb	316	LWIP_UNUSED_ARG(rchallenge_len);
AdamGreen	0:616601bde9fb	317
AdamGreen	0:616601bde9fb	318	/* Initialize the Unicode version of the secret (== password). */
AdamGreen	0:616601bde9fb	319	/* This implicitly supports 8-bit ISO8859/1 characters. */
AdamGreen	0:616601bde9fb	320	BZERO(unicodePassword, sizeof(unicodePassword));
AdamGreen	0:616601bde9fb	321	for (i = 0; i < secret_len; i++) {
AdamGreen	0:616601bde9fb	322	unicodePassword[i * 2] = (u_char)secret[i];
AdamGreen	0:616601bde9fb	323	}
AdamGreen	0:616601bde9fb	324	MDbegin(&md4Context);
AdamGreen	0:616601bde9fb	325	MDupdate(&md4Context, unicodePassword, secret_len * 2 * 8); /* Unicode is 2 bytes/char, 8 for bit count /
AdamGreen	0:616601bde9fb	326
AdamGreen	0:616601bde9fb	327	if (low_byte_first == -1) {
AdamGreen	0:616601bde9fb	328	low_byte_first = (PP_HTONS((unsigned short int)1) != 1);
AdamGreen	0:616601bde9fb	329	}
AdamGreen	0:616601bde9fb	330	if (low_byte_first == 0) {
AdamGreen	0:616601bde9fb	331	/* @todo: arg type - u_long* or u_int* ? */
AdamGreen	0:616601bde9fb	332	MDreverse((unsigned int)&md4Context); / sfb 961105 */
AdamGreen	0:616601bde9fb	333	}
AdamGreen	0:616601bde9fb	334
AdamGreen	0:616601bde9fb	335	MDupdate(&md4Context, NULL, 0); /* Tell MD4 we're done */
AdamGreen	0:616601bde9fb	336
AdamGreen	0:616601bde9fb	337	ChallengeResponse((u_char)rchallenge, (u_char)md4Context.buffer, response->NTResp);
AdamGreen	0:616601bde9fb	338	}
AdamGreen	0:616601bde9fb	339
AdamGreen	0:616601bde9fb	340	#ifdef MSLANMAN
AdamGreen	0:616601bde9fb	341	static u_char StdText = (u_char )"KGS!@#$%"; /* key from rasapi32.dll */
AdamGreen	0:616601bde9fb	342
AdamGreen	0:616601bde9fb	343	static void
AdamGreen	0:616601bde9fb	344	ChapMS_LANMan( char *rchallenge,
AdamGreen	0:616601bde9fb	345	int rchallenge_len,
AdamGreen	0:616601bde9fb	346	char *secret,
AdamGreen	0:616601bde9fb	347	int secret_len,
AdamGreen	0:616601bde9fb	348	MS_ChapResponse *response)
AdamGreen	0:616601bde9fb	349	{
AdamGreen	0:616601bde9fb	350	int i;
AdamGreen	0:616601bde9fb	351	u_char UcasePassword[MAX_NT_PASSWORD]; /* max is actually 14 */
AdamGreen	0:616601bde9fb	352	u_char PasswordHash[16];
AdamGreen	0:616601bde9fb	353
AdamGreen	0:616601bde9fb	354	/* LANMan password is case insensitive */
AdamGreen	0:616601bde9fb	355	BZERO(UcasePassword, sizeof(UcasePassword));
AdamGreen	0:616601bde9fb	356	for (i = 0; i < secret_len; i++) {
AdamGreen	0:616601bde9fb	357	UcasePassword[i] = (u_char)toupper(secret[i]);
AdamGreen	0:616601bde9fb	358	}
AdamGreen	0:616601bde9fb	359	DesEncrypt( StdText, UcasePassword + 0, PasswordHash + 0 );
AdamGreen	0:616601bde9fb	360	DesEncrypt( StdText, UcasePassword + 7, PasswordHash + 8 );
AdamGreen	0:616601bde9fb	361	ChallengeResponse(rchallenge, PasswordHash, response->LANManResp);
AdamGreen	0:616601bde9fb	362	}
AdamGreen	0:616601bde9fb	363	#endif
AdamGreen	0:616601bde9fb	364
AdamGreen	0:616601bde9fb	365	void
AdamGreen	0:616601bde9fb	366	ChapMS( chap_state cstate, char rchallenge, int rchallenge_len, char *secret, int secret_len)
AdamGreen	0:616601bde9fb	367	{
AdamGreen	0:616601bde9fb	368	MS_ChapResponse response;
AdamGreen	0:616601bde9fb	369	#ifdef MSLANMAN
AdamGreen	0:616601bde9fb	370	extern int ms_lanman;
AdamGreen	0:616601bde9fb	371	#endif
AdamGreen	0:616601bde9fb	372
AdamGreen	0:616601bde9fb	373	#if 0
AdamGreen	0:616601bde9fb	374	CHAPDEBUG(LOG_INFO, ("ChapMS: secret is '%.*s'\n", secret_len, secret));
AdamGreen	0:616601bde9fb	375	#endif
AdamGreen	0:616601bde9fb	376	BZERO(&response, sizeof(response));
AdamGreen	0:616601bde9fb	377
AdamGreen	0:616601bde9fb	378	/* Calculate both always */
AdamGreen	0:616601bde9fb	379	ChapMS_NT(rchallenge, rchallenge_len, secret, secret_len, &response);
AdamGreen	0:616601bde9fb	380
AdamGreen	0:616601bde9fb	381	#ifdef MSLANMAN
AdamGreen	0:616601bde9fb	382	ChapMS_LANMan(rchallenge, rchallenge_len, secret, secret_len, &response);
AdamGreen	0:616601bde9fb	383
AdamGreen	0:616601bde9fb	384	/* prefered method is set by option */
AdamGreen	0:616601bde9fb	385	response.UseNT = !ms_lanman;
AdamGreen	0:616601bde9fb	386	#else
AdamGreen	0:616601bde9fb	387	response.UseNT = 1;
AdamGreen	0:616601bde9fb	388	#endif
AdamGreen	0:616601bde9fb	389
AdamGreen	0:616601bde9fb	390	BCOPY(&response, cstate->response, MS_CHAP_RESPONSE_LEN);
AdamGreen	0:616601bde9fb	391	cstate->resp_length = MS_CHAP_RESPONSE_LEN;
AdamGreen	0:616601bde9fb	392	}
AdamGreen	0:616601bde9fb	393
AdamGreen	0:616601bde9fb	394	#endif /* MSCHAP_SUPPORT */
AdamGreen	0:616601bde9fb	395
AdamGreen	0:616601bde9fb	396	#endif /* PPP_SUPPORT */

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Type:	Program
Mbed OS support:	Mbed 2 deprecated
Created:	23 Feb 2012
Imports:	113
Forks:	0
Commits:	2
Dependents:	0
Dependencies:	4
Followers:	6

NetStack/lwip/netif/ppp/chpms.c@0:616601bde9fb, 2012-02-23 (annotated)

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