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pap.c (25908) pap.c (26098)
1/*
2 * PPP PAP Module
3 *
4 * Written by Toshiharu OHNO (tony-o@iij.ad.jp)
5 *
6 * Copyright (C) 1993-94, Internet Initiative Japan, Inc.
7 * All rights reserverd.
8 *
9 * Redistribution and use in source and binary forms are permitted
10 * provided that the above copyright notice and this paragraph are
11 * duplicated in all such forms and that any documentation,
12 * advertising materials, and other materials related to such
13 * distribution and use acknowledge that the software was developed
14 * by the Internet Initiative Japan, Inc. The name of the
15 * IIJ may not be used to endorse or promote products derived
16 * from this software without specific prior written permission.
17 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
18 * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
19 * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
20 *
1/*
2 * PPP PAP Module
3 *
4 * Written by Toshiharu OHNO (tony-o@iij.ad.jp)
5 *
6 * Copyright (C) 1993-94, Internet Initiative Japan, Inc.
7 * All rights reserverd.
8 *
9 * Redistribution and use in source and binary forms are permitted
10 * provided that the above copyright notice and this paragraph are
11 * duplicated in all such forms and that any documentation,
12 * advertising materials, and other materials related to such
13 * distribution and use acknowledge that the software was developed
14 * by the Internet Initiative Japan, Inc. The name of the
15 * IIJ may not be used to endorse or promote products derived
16 * from this software without specific prior written permission.
17 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
18 * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
19 * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
20 *
21 * $Id: pap.c,v 1.9 1997/02/22 16:10:40 peter Exp $
21 * $Id: pap.c,v 1.10 1997/05/19 02:00:12 brian Exp $
22 *
23 * TODO:
24 */
25#include "fsm.h"
26#include "lcp.h"
27#include "pap.h"
28#include "vars.h"
29#include "hdlc.h"
30#include "lcpproto.h"
31#include "phase.h"
32#include "auth.h"
33
34#ifdef PASSWDAUTH
35# include "passwdauth.h"
36#endif
37
38static char *papcodes[] = {
39 "???", "REQUEST", "ACK", "NAK"
40};
41
42struct authinfo AuthPapInfo = {
43 SendPapChallenge,
44};
45
46void
47SendPapChallenge(papid)
48int papid;
49{
50 struct fsmheader lh;
51 struct mbuf *bp;
52 u_char *cp;
53 int namelen, keylen, plen;
54
55 namelen = strlen(VarAuthName);
56 keylen = strlen(VarAuthKey);
57 plen = namelen + keylen + 2;
58#ifdef DEBUG
59 logprintf("namelen = %d, keylen = %d\n", namelen, keylen);
60#endif
61 LogPrintf(LOG_PHASE_BIT, "PAP: %s (%s)\n", VarAuthName, VarAuthKey);
62 lh.code = PAP_REQUEST;
63 lh.id = papid;
64 lh.length = htons(plen + sizeof(struct fsmheader));
65 bp = mballoc(plen + sizeof(struct fsmheader), MB_FSM);
66 bcopy(&lh, MBUF_CTOP(bp), sizeof(struct fsmheader));
67 cp = MBUF_CTOP(bp) + sizeof(struct fsmheader);
68 *cp++ = namelen;
69 bcopy(VarAuthName, cp, namelen);
70 cp += namelen;
71 *cp++ = keylen;
72 bcopy(VarAuthKey, cp, keylen);
73
74 HdlcOutput(PRI_LINK, PROTO_PAP, bp);
75}
76
77static void
78SendPapCode(id, code, message)
79int id;
80char *message;
81int code;
82{
83 struct fsmheader lh;
84 struct mbuf *bp;
85 u_char *cp;
86 int plen, mlen;
87
88 lh.code = code;
89 lh.id = id;
90 mlen = strlen(message);
91 plen = mlen + 1;
92 lh.length = htons(plen + sizeof(struct fsmheader));
93 bp = mballoc(plen + sizeof(struct fsmheader), MB_FSM);
94 bcopy(&lh, MBUF_CTOP(bp), sizeof(struct fsmheader));
95 cp = MBUF_CTOP(bp) + sizeof(struct fsmheader);
96 *cp++ = mlen;
97 bcopy(message, cp, mlen);
98 LogPrintf(LOG_PHASE_BIT, "PapOutput: %s\n", papcodes[code]);
99 HdlcOutput(PRI_LINK, PROTO_PAP, bp);
100}
101
102/*
103 * Validate given username and passwrd against with secret table
104 */
105static int
106PapValidate(name, key)
107u_char *name, *key;
108{
109 int nlen, klen;
110
111 nlen = *name++;
112 klen = *key;
113 *key++ = 0;
114 key[klen] = 0;
115#ifdef DEBUG
116 logprintf("name: %s (%d), key: %s (%d)\n", name, nlen, key, klen);
117#endif
118
119#ifdef PASSWDAUTH
120 if( Enabled( ConfPasswdAuth ) )
121 {
122 LogPrintf( LOG_LCP, "PasswdAuth enabled - calling\n" );
123 return PasswdAuth( name, key );
124 }
125#endif /* PASSWDAUTH */
126
127 return(AuthValidate(SECRETFILE, name, key));
128}
129
130void
131PapInput(bp)
132struct mbuf *bp;
133{
134 int len = plength(bp);
135 struct fsmheader *php;
136 struct lcpstate *lcp = &LcpInfo;
137 u_char *cp;
138
139 if (len >= sizeof(struct fsmheader)) {
140 php = (struct fsmheader *)MBUF_CTOP(bp);
141 if (len >= ntohs(php->length)) {
142 if (php->code < PAP_REQUEST || php->code > PAP_NAK)
143 php->code = 0;
144 LogPrintf(LOG_PHASE_BIT, "PapInput: %s\n", papcodes[php->code]);
145
146 switch (php->code) {
147 case PAP_REQUEST:
148 cp = (u_char *) (php + 1);
149 if (PapValidate(cp, cp + *cp + 1)) {
150 SendPapCode(php->id, PAP_ACK, "Greetings!!");
151 lcp->auth_ineed = 0;
152 if (lcp->auth_iwait == 0)
153 NewPhase(PHASE_NETWORK);
154 } else {
155 SendPapCode(php->id, PAP_NAK, "Login incorrect");
22 *
23 * TODO:
24 */
25#include "fsm.h"
26#include "lcp.h"
27#include "pap.h"
28#include "vars.h"
29#include "hdlc.h"
30#include "lcpproto.h"
31#include "phase.h"
32#include "auth.h"
33
34#ifdef PASSWDAUTH
35# include "passwdauth.h"
36#endif
37
38static char *papcodes[] = {
39 "???", "REQUEST", "ACK", "NAK"
40};
41
42struct authinfo AuthPapInfo = {
43 SendPapChallenge,
44};
45
46void
47SendPapChallenge(papid)
48int papid;
49{
50 struct fsmheader lh;
51 struct mbuf *bp;
52 u_char *cp;
53 int namelen, keylen, plen;
54
55 namelen = strlen(VarAuthName);
56 keylen = strlen(VarAuthKey);
57 plen = namelen + keylen + 2;
58#ifdef DEBUG
59 logprintf("namelen = %d, keylen = %d\n", namelen, keylen);
60#endif
61 LogPrintf(LOG_PHASE_BIT, "PAP: %s (%s)\n", VarAuthName, VarAuthKey);
62 lh.code = PAP_REQUEST;
63 lh.id = papid;
64 lh.length = htons(plen + sizeof(struct fsmheader));
65 bp = mballoc(plen + sizeof(struct fsmheader), MB_FSM);
66 bcopy(&lh, MBUF_CTOP(bp), sizeof(struct fsmheader));
67 cp = MBUF_CTOP(bp) + sizeof(struct fsmheader);
68 *cp++ = namelen;
69 bcopy(VarAuthName, cp, namelen);
70 cp += namelen;
71 *cp++ = keylen;
72 bcopy(VarAuthKey, cp, keylen);
73
74 HdlcOutput(PRI_LINK, PROTO_PAP, bp);
75}
76
77static void
78SendPapCode(id, code, message)
79int id;
80char *message;
81int code;
82{
83 struct fsmheader lh;
84 struct mbuf *bp;
85 u_char *cp;
86 int plen, mlen;
87
88 lh.code = code;
89 lh.id = id;
90 mlen = strlen(message);
91 plen = mlen + 1;
92 lh.length = htons(plen + sizeof(struct fsmheader));
93 bp = mballoc(plen + sizeof(struct fsmheader), MB_FSM);
94 bcopy(&lh, MBUF_CTOP(bp), sizeof(struct fsmheader));
95 cp = MBUF_CTOP(bp) + sizeof(struct fsmheader);
96 *cp++ = mlen;
97 bcopy(message, cp, mlen);
98 LogPrintf(LOG_PHASE_BIT, "PapOutput: %s\n", papcodes[code]);
99 HdlcOutput(PRI_LINK, PROTO_PAP, bp);
100}
101
102/*
103 * Validate given username and passwrd against with secret table
104 */
105static int
106PapValidate(name, key)
107u_char *name, *key;
108{
109 int nlen, klen;
110
111 nlen = *name++;
112 klen = *key;
113 *key++ = 0;
114 key[klen] = 0;
115#ifdef DEBUG
116 logprintf("name: %s (%d), key: %s (%d)\n", name, nlen, key, klen);
117#endif
118
119#ifdef PASSWDAUTH
120 if( Enabled( ConfPasswdAuth ) )
121 {
122 LogPrintf( LOG_LCP, "PasswdAuth enabled - calling\n" );
123 return PasswdAuth( name, key );
124 }
125#endif /* PASSWDAUTH */
126
127 return(AuthValidate(SECRETFILE, name, key));
128}
129
130void
131PapInput(bp)
132struct mbuf *bp;
133{
134 int len = plength(bp);
135 struct fsmheader *php;
136 struct lcpstate *lcp = &LcpInfo;
137 u_char *cp;
138
139 if (len >= sizeof(struct fsmheader)) {
140 php = (struct fsmheader *)MBUF_CTOP(bp);
141 if (len >= ntohs(php->length)) {
142 if (php->code < PAP_REQUEST || php->code > PAP_NAK)
143 php->code = 0;
144 LogPrintf(LOG_PHASE_BIT, "PapInput: %s\n", papcodes[php->code]);
145
146 switch (php->code) {
147 case PAP_REQUEST:
148 cp = (u_char *) (php + 1);
149 if (PapValidate(cp, cp + *cp + 1)) {
150 SendPapCode(php->id, PAP_ACK, "Greetings!!");
151 lcp->auth_ineed = 0;
152 if (lcp->auth_iwait == 0)
153 NewPhase(PHASE_NETWORK);
154 } else {
155 SendPapCode(php->id, PAP_NAK, "Login incorrect");
156 reconnect(RECON_FALSE);
156 LcpClose();
157 LcpClose();
157 reconnectCount = 0;
158 }
159 break;
160 case PAP_ACK:
161 StopAuthTimer(&AuthPapInfo);
162 cp = (u_char *)(php + 1);
163 len = *cp++;
164 cp[len] = 0;
165 LogPrintf(LOG_PHASE_BIT, "Received PAP_ACK (%s)\n", cp);
166 if (lcp->auth_iwait == PROTO_PAP) {
167 lcp->auth_iwait = 0;
168 if (lcp->auth_ineed == 0)
169 NewPhase(PHASE_NETWORK);
170 }
171 break;
172 case PAP_NAK:
173 StopAuthTimer(&AuthPapInfo);
174 cp = (u_char *)(php + 1);
175 len = *cp++;
176 cp[len] = 0;
177 LogPrintf(LOG_PHASE_BIT, "Received PAP_NAK (%s)\n", cp);
158 }
159 break;
160 case PAP_ACK:
161 StopAuthTimer(&AuthPapInfo);
162 cp = (u_char *)(php + 1);
163 len = *cp++;
164 cp[len] = 0;
165 LogPrintf(LOG_PHASE_BIT, "Received PAP_ACK (%s)\n", cp);
166 if (lcp->auth_iwait == PROTO_PAP) {
167 lcp->auth_iwait = 0;
168 if (lcp->auth_ineed == 0)
169 NewPhase(PHASE_NETWORK);
170 }
171 break;
172 case PAP_NAK:
173 StopAuthTimer(&AuthPapInfo);
174 cp = (u_char *)(php + 1);
175 len = *cp++;
176 cp[len] = 0;
177 LogPrintf(LOG_PHASE_BIT, "Received PAP_NAK (%s)\n", cp);
178 reconnect(RECON_FALSE);
178 LcpClose();
179 LcpClose();
179 reconnectCount = 0;
180 break;
181 }
182 }
183 }
184 pfree(bp);
185}
180 break;
181 }
182 }
183 }
184 pfree(bp);
185}