tauthsrv.h - plan9port - [fork] Plan 9 from user space
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tauthsrv.h (4682B)
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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 AUTOLIB(authsrv)
11
12 /*
13 * Interface for talking to authentication server.
14 */
15 typedef struct Ticket Ticket;
16 typedef struct Ticketreq Ticketreq;
17 typedef struct Authenticator Authenticator;
18 typedef struct Nvrsafe Nvrsafe;
19 typedef struct Passwordreq Passwordreq;
20 typedef struct OChapreply OChapreply;
21 typedef struct OMSchapreply OMSchapreply;
22
23 enum
24 {
25 ANAMELEN= 28, /* maximum size of name in previous proto */
26 AERRLEN= 64, /* maximum size of errstr in previous proto */
27 DOMLEN= 48, /* length of an authentication domain name */
28 DESKEYLEN= 7, /* length of a des key for encrypt/decrypt */
29 CHALLEN= 8, /* length of a plan9 sk1 challenge */
30 NETCHLEN= 16, /* max network challenge length (used in AS protocol) */
31 CONFIGLEN= 14,
32 SECRETLEN= 32, /* max length of a secret */
33
34 KEYDBOFF= 8, /* length of random data at the start of key file */
35 OKEYDBLEN= ANAMELEN+DESKEYLEN+4+2, /* length of an entry in old key file */
36 KEYDBLEN= OKEYDBLEN+SECRETLEN, /* length of an entry in key file */
37 OMD5LEN= 16
38 };
39
40 /* encryption numberings (anti-replay) */
41 enum
42 {
43 AuthTreq=1, /* ticket request */
44 AuthChal=2, /* challenge box request */
45 AuthPass=3, /* change password */
46 AuthOK=4, /* fixed length reply follows */
47 AuthErr=5, /* error follows */
48 AuthMod=6, /* modify user */
49 AuthApop=7, /* apop authentication for pop3 */
50 AuthOKvar=9, /* variable length reply follows */
51 AuthChap=10, /* chap authentication for ppp */
52 AuthMSchap=11, /* MS chap authentication for ppp */
53 AuthCram=12, /* CRAM verification for IMAP (RFC2195 & rfc2104) */
54 AuthHttp=13, /* http domain login */
55 AuthVNC=14, /* VNC server login (deprecated) */
56
57
58 AuthTs=64, /* ticket encrypted with server's key */
59 AuthTc, /* ticket encrypted with client's key */
60 AuthAs, /* server generated authenticator */
61 AuthAc, /* client generated authenticator */
62 AuthTp, /* ticket encrypted with client's key for password change */
63 AuthHr /* http reply */
64 };
65
66 struct Ticketreq
67 {
68 char type;
69 char authid[ANAMELEN]; /* server's encryption id */
70 char authdom[DOMLEN]; /* server's authentication domain */
71 char chal[CHALLEN]; /* challenge from server */
72 char hostid[ANAMELEN]; /* host's encryption id */
73 char uid[ANAMELEN]; /* uid of requesting user on host */
74 };
75 #define TICKREQLEN (3*ANAMELEN+CHALLEN+DOMLEN+1)
76
77 struct Ticket
78 {
79 char num; /* replay protection */
80 char chal[CHALLEN]; /* server challenge */
81 char cuid[ANAMELEN]; /* uid on client */
82 char suid[ANAMELEN]; /* uid on server */
83 char key[DESKEYLEN]; /* nonce DES key */
84 };
85 #define TICKETLEN (CHALLEN+2*ANAMELEN+DESKEYLEN+1)
86
87 struct Authenticator
88 {
89 char num; /* replay protection */
90 char chal[CHALLEN];
91 ulong id; /* authenticator id, ++'d with each auth */
92 };
93 #define AUTHENTLEN (CHALLEN+4+1)
94
95 struct Passwordreq
96 {
97 char num;
98 char old[ANAMELEN];
99 char new[ANAMELEN];
100 char changesecret;
101 char secret[SECRETLEN]; /* new secret */
102 };
103 #define PASSREQLEN (2*ANAMELEN+1+1+SECRETLEN)
104
105 struct OChapreply
106 {
107 uchar id;
108 char uid[ANAMELEN];
109 char resp[OMD5LEN];
110 };
111
112 struct OMSchapreply
113 {
114 char uid[ANAMELEN];
115 char LMresp[24]; /* Lan Manager response */
116 char NTresp[24]; /* NT response */
117 };
118
119 /*
120 * convert to/from wire format
121 */
122 extern int convT2M(Ticket*, char*, char*);
123 extern void convM2T(char*, Ticket*, char*);
124 extern void convM2Tnoenc(char*, Ticket*);
125 extern int convA2M(Authenticator*, char*, char*);
126 extern void convM2A(char*, Authenticator*, char*);
127 extern int convTR2M(Ticketreq*, char*);
128 extern void convM2TR(char*, Ticketreq*);
129 extern int convPR2M(Passwordreq*, char*, char*);
130 extern void convM2PR(char*, Passwordreq*, char*);
131
132 /*
133 * convert ascii password to DES key
134 */
135 extern int opasstokey(char*, char*);
136 extern int passtokey(char*, char*);
137
138 /*
139 * Nvram interface
140 */
141 enum {
142 NVwrite = 1<<0, /* always prompt and rewrite nvram */
143 NVwriteonerr = 1<<1 /* prompt and rewrite nvram when corrupt */
144 };
145
146 struct Nvrsafe
147 {
148 char machkey[DESKEYLEN];
149 uchar machsum;
150 char authkey[DESKEYLEN];
151 uchar authsum;
152 char config[CONFIGLEN];
153 uchar configsum;
154 char authid[ANAMELEN];
155 uchar authidsum;
156 char authdom[DOMLEN];
157 uchar authdomsum;
158 };
159
160 extern uchar nvcsum(void*, int);
161 extern int readnvram(Nvrsafe*, int);
162
163 /*
164 * call up auth server
165 */
166 extern int authdial(char *netroot, char *authdom);
167
168 /*
169 * exchange messages with auth server
170 */
171 extern int _asgetticket(int, char*, char*);
172 extern int _asrdresp(int, char*, int);
173 extern int sslnegotiate(int, Ticket*, char**, char**);
174 extern int srvsslnegotiate(int, Ticket*, char**, char**);
175 #ifdef __cplusplus
176 }
177 #endif
178 #endif