1 #ifndef __AUTHSRV_H__
2 #define __AUTHSRV_H__ 1
3 #ifdef __cplusplus
4 extern "C" {
5 #endif
6 /*
7 #pragma	src	"/sys/src/libauthsrv"
8 #pragma	lib	"libauthsrv.a"
9 */
10 
11 /*
12  * Interface for talking to authentication server.
13  */
14 typedef struct	Ticket		Ticket;
15 typedef struct	Ticketreq	Ticketreq;
16 typedef struct	Authenticator	Authenticator;
17 typedef struct	Nvrsafe		Nvrsafe;
18 typedef struct	Passwordreq	Passwordreq;
19 typedef struct	OChapreply	OChapreply;
20 typedef struct	OMSchapreply	OMSchapreply;
21 
22 enum
23 {
24 	ANAMELEN=	28,		/* maximum size of name in previous proto */
25 	AERRLEN=	64,		/* maximum size of errstr in previous proto */
26 	DOMLEN=		48,		/* length of an authentication domain name */
27 	DESKEYLEN=	7,		/* length of a des key for encrypt/decrypt */
28 	CHALLEN=	8,		/* length of a plan9 sk1 challenge */
29 	NETCHLEN=	16,		/* max network challenge length (used in AS protocol) */
30 	CONFIGLEN=	14,
31 	SECRETLEN=	32,		/* max length of a secret */
32 
33 	KEYDBOFF=	8,		/* length of random data at the start of key file */
34 	OKEYDBLEN=	ANAMELEN+DESKEYLEN+4+2,	/* length of an entry in old key file */
35 	KEYDBLEN=	OKEYDBLEN+SECRETLEN,	/* length of an entry in key file */
36 	OMD5LEN=	16,
37 };
38 
39 /* encryption numberings (anti-replay) */
40 enum
41 {
42 	AuthTreq=1,	/* ticket request */
43 	AuthChal=2,	/* challenge box request */
44 	AuthPass=3,	/* change password */
45 	AuthOK=4,	/* fixed length reply follows */
46 	AuthErr=5,	/* error follows */
47 	AuthMod=6,	/* modify user */
48 	AuthApop=7,	/* apop authentication for pop3 */
49 	AuthOKvar=9,	/* variable length reply follows */
50 	AuthChap=10,	/* chap authentication for ppp */
51 	AuthMSchap=11,	/* MS chap authentication for ppp */
52 	AuthCram=12,	/* CRAM verification for IMAP (RFC2195 & rfc2104) */
53 	AuthHttp=13,	/* http domain login */
54 	AuthVNC=14,	/* VNC server login (deprecated) */
55 
56 
57 	AuthTs=64,	/* ticket encrypted with server's key */
58 	AuthTc,		/* ticket encrypted with client's key */
59 	AuthAs,		/* server generated authenticator */
60 	AuthAc,		/* client generated authenticator */
61 	AuthTp,		/* ticket encrypted with client's key for password change */
62 	AuthHr,		/* http reply */
63 };
64 
65 struct Ticketreq
66 {
67 	char	type;
68 	char	authid[ANAMELEN];	/* server's encryption id */
69 	char	authdom[DOMLEN];	/* server's authentication domain */
70 	char	chal[CHALLEN];		/* challenge from server */
71 	char	hostid[ANAMELEN];	/* host's encryption id */
72 	char	uid[ANAMELEN];		/* uid of requesting user on host */
73 };
74 #define	TICKREQLEN	(3*ANAMELEN+CHALLEN+DOMLEN+1)
75 
76 struct Ticket
77 {
78 	char	num;			/* replay protection */
79 	char	chal[CHALLEN];		/* server challenge */
80 	char	cuid[ANAMELEN];		/* uid on client */
81 	char	suid[ANAMELEN];		/* uid on server */
82 	char	key[DESKEYLEN];		/* nonce DES key */
83 };
84 #define	TICKETLEN	(CHALLEN+2*ANAMELEN+DESKEYLEN+1)
85 
86 struct Authenticator
87 {
88 	char	num;			/* replay protection */
89 	char	chal[CHALLEN];
90 	ulong	id;			/* authenticator id, ++'d with each auth */
91 };
92 #define	AUTHENTLEN	(CHALLEN+4+1)
93 
94 struct Passwordreq
95 {
96 	char	num;
97 	char	old[ANAMELEN];
98 	char	new[ANAMELEN];
99 	char	changesecret;
100 	char	secret[SECRETLEN];	/* new secret */
101 };
102 #define	PASSREQLEN	(2*ANAMELEN+1+1+SECRETLEN)
103 
104 struct	OChapreply
105 {
106 	uchar	id;
107 	char	uid[ANAMELEN];
108 	char	resp[OMD5LEN];
109 };
110 
111 struct	OMSchapreply
112 {
113 	char	uid[ANAMELEN];
114 	char	LMresp[24];		/* Lan Manager response */
115 	char	NTresp[24];		/* NT response */
116 };
117 
118 /*
119  *  convert to/from wire format
120  */
121 extern	int	convT2M(Ticket*, char*, char*);
122 extern	void	convM2T(char*, Ticket*, char*);
123 extern	void	convM2Tnoenc(char*, Ticket*);
124 extern	int	convA2M(Authenticator*, char*, char*);
125 extern	void	convM2A(char*, Authenticator*, char*);
126 extern	int	convTR2M(Ticketreq*, char*);
127 extern	void	convM2TR(char*, Ticketreq*);
128 extern	int	convPR2M(Passwordreq*, char*, char*);
129 extern	void	convM2PR(char*, Passwordreq*, char*);
130 
131 /*
132  *  convert ascii password to DES key
133  */
134 extern	int	opasstokey(char*, char*);
135 extern	int	passtokey(char*, char*);
136 
137 /*
138  *  Nvram interface
139  */
140 enum {
141 	NVwrite = 1<<0,		/* always prompt and rewrite nvram */
142 	NVwriteonerr = 1<<1,	/* prompt and rewrite nvram when corrupt */
143 };
144 
145 struct Nvrsafe
146 {
147 	char	machkey[DESKEYLEN];
148 	uchar	machsum;
149 	char	authkey[DESKEYLEN];
150 	uchar	authsum;
151 	char	config[CONFIGLEN];
152 	uchar	configsum;
153 	char	authid[ANAMELEN];
154 	uchar	authidsum;
155 	char	authdom[DOMLEN];
156 	uchar	authdomsum;
157 };
158 
159 extern	uchar	nvcsum(void*, int);
160 extern int	readnvram(Nvrsafe*, int);
161 
162 /*
163  *  call up auth server
164  */
165 extern	int	authdial(char *netroot, char *authdom);
166 
167 /*
168  *  exchange messages with auth server
169  */
170 extern	int	_asgetticket(int, char*, char*);
171 extern	int	_asrdresp(int, char*, int);
172 extern	int	sslnegotiate(int, Ticket*, char**, char**);
173 extern	int	srvsslnegotiate(int, Ticket*, char**, char**);
174 #ifdef __cplusplus
175 }
176 #endif
177 #endif