Annotation of embedaddon/mpd/src/auth.h, revision 1.1.1.1
1.1 misho 1:
2: /*
3: * auth.h
4: *
5: * Written by Archie Cobbs <archie@freebsd.org>
6: * Copyright (c) 1995-1999 Whistle Communications, Inc. All rights reserved.
7: * See ``COPYRIGHT.whistle''
8: */
9:
10: #ifndef _AUTH_H_
11: #define _AUTH_H_
12:
13: #include "timer.h"
14: #include "ppp.h"
15: #include "pap.h"
16: #include "chap.h"
17: #include "eap.h"
18: #include "radius.h"
19:
20: #ifdef USE_SYSTEM
21: #include <pwd.h>
22: #endif
23: #ifdef USE_OPIE
24: #include <opie.h>
25: #endif
26:
27: /*
28: * DEFINITIONS
29: */
30:
31: #define AUTH_RETRIES 5
32:
33: #define AUTH_MSG_WELCOME "Welcome"
34: #define AUTH_MSG_INVALID "Login incorrect"
35: #define AUTH_MSG_BAD_PACKET "Incorrectly formatted packet"
36: #define AUTH_MSG_NOT_ALLOWED "Login not allowed for this account"
37: #define AUTH_MSG_NOT_EXPECTED "Unexpected packet"
38: #define AUTH_MSG_ACCT_DISAB "Account disabled"
39: #define AUTH_MSG_RESTR_HOURS "Login hours restricted"
40:
41: #define AUTH_PEER_TO_SELF 0
42: #define AUTH_SELF_TO_PEER 1
43:
44: #define AUTH_FAIL_INVALID_LOGIN 0
45: #define AUTH_FAIL_ACCT_DISABLED 1
46: #define AUTH_FAIL_NO_PERMISSION 2
47: #define AUTH_FAIL_RESTRICTED_HOURS 3
48: #define AUTH_FAIL_INVALID_PACKET 4
49: #define AUTH_FAIL_NOT_EXPECTED 5
50:
51: #define AUTH_STATUS_UNDEF 0
52: #define AUTH_STATUS_FAIL 1
53: #define AUTH_STATUS_SUCCESS 2
54: #define AUTH_STATUS_BUSY 3
55:
56: #define AUTH_PW_HASH_NONE 0
57: #define AUTH_PW_HASH_NT 1
58:
59: #define AUTH_ACCT_START 1
60: #define AUTH_ACCT_STOP 2
61: #define AUTH_ACCT_UPDATE 3
62:
63: #define MPPE_POLICY_NONE 0
64: #define MPPE_POLICY_ALLOWED 1
65: #define MPPE_POLICY_REQUIRED 2
66:
67: #define MPPE_TYPE_0BIT 0 /* No encryption required */
68: #define MPPE_TYPE_40BIT 2
69: #define MPPE_TYPE_128BIT 4
70: #define MPPE_TYPE_56BIT 8
71:
72: /* Configuration options */
73: enum {
74: AUTH_CONF_RADIUS_AUTH = 1,
75: AUTH_CONF_RADIUS_ACCT,
76: AUTH_CONF_INTERNAL,
77: AUTH_CONF_EXT_AUTH,
78: AUTH_CONF_EXT_ACCT,
79: AUTH_CONF_SYSTEM_AUTH,
80: AUTH_CONF_SYSTEM_ACCT,
81: AUTH_CONF_PAM_AUTH,
82: AUTH_CONF_PAM_ACCT,
83: AUTH_CONF_OPIE,
84: AUTH_CONF_ACCT_MANDATORY
85: };
86:
87: #if defined(USE_NG_BPF) || defined(USE_IPFW)
88: struct acl { /* List of ACLs received from auth */
89: u_short number; /* ACL number given by auth server */
90: u_short real_number; /* ACL number allocated my mpd */
91: struct acl *next;
92: char name[ACL_NAME_LEN]; /* Name of ACL */
93: char rule[1]; /* Text of ACL (Dynamically sized!) */
94: };
95: #endif
96:
97: struct authparams {
98: char authname[AUTH_MAX_AUTHNAME];
99: char password[AUTH_MAX_PASSWORD];
100:
101: struct papparams pap;
102: struct chapparams chap;
103:
104: struct u_range range; /* IP range allowed to user */
105: u_char range_valid; /* range is valid */
106: u_char netmask; /* IP Netmask */
107: u_char vjc_enable; /* VJC requested by AAA */
108:
109: u_char ippool_used;
110: char ippool[LINK_MAX_NAME];
111:
112: struct in_addr peer_dns[2]; /* DNS servers for peer to use */
113: struct in_addr peer_nbns[2]; /* NBNS servers for peer to use */
114:
115: char *eapmsg; /* EAP Msg for forwarding to RADIUS server */
116: int eapmsg_len;
117: u_char *state; /* copy of the state attribute, needed for accounting */
118: int state_len;
119: u_char *class; /* copy of the class attribute, needed for accounting */
120: int class_len;
121:
122: char action[8 + LINK_MAX_NAME];
123:
124: #ifdef USE_IPFW
125: struct acl *acl_rule; /* ipfw rules */
126: struct acl *acl_pipe; /* ipfw pipes */
127: struct acl *acl_queue; /* ipfw queues */
128: struct acl *acl_table; /* ipfw tables */
129: #endif
130:
131: #ifdef USE_NG_BPF
132: struct acl *acl_filters[ACL_FILTERS]; /* mpd's internal bpf filters */
133: struct acl *acl_limits[ACL_DIRS]; /* traffic limits based on mpd's filters */
134:
135: char std_acct[ACL_DIRS][ACL_NAME_LEN]; /* Names of ACL rerurned in standard accounting */
136: #endif
137:
138: u_int session_timeout; /* Session-Timeout */
139: u_int idle_timeout; /* Idle-Timeout */
140: u_int acct_update; /* interval for accouting updates */
141: u_int acct_update_lim_recv;
142: u_int acct_update_lim_xmit;
143: char *msdomain; /* Microsoft domain */
144: SLIST_HEAD(, ifaceroute) routes;
145: u_short mtu; /* MTU */
146:
147: u_char authentic; /* wich backend was used */
148:
149: char callingnum[128];/* hr representation of the calling number */
150: char callednum[128]; /* hr representation of the called number */
151: char selfname[64]; /* hr representation of the self name */
152: char peername[64]; /* hr representation of the peer name */
153: char selfaddr[64]; /* hr representation of the self address */
154: char peeraddr[64]; /* hr representation of the peer address */
155: char peerport[6]; /* hr representation of the peer port */
156: char peermacaddr[32]; /* hr representation of the peer MAC address */
157: char peeriface[IFNAMSIZ]; /* hr representation of the peer interface */
158:
159: /* Iface stuff */
160: char ifname[IFNAMSIZ]; /* Interface name */
161: #ifdef SIOCSIFDESCR
162: char *ifdescr; /* Interface description */
163: #endif
164: #ifdef SIOCAIFGROUP
165: char ifgroup[IFNAMSIZ]; /* Interface group */
166: #endif
167:
168: struct {
169: int policy; /* MPPE_POLICY_* */
170: int types; /* MPPE_TYPE_*BIT bitmask */
171: u_char lm_hash[16]; /* LM-Hash */
172: u_char nt_hash[16]; /* NT-Hash */
173: u_char nt_hash_hash[16]; /* NT-Hash-Hash */
174: u_char has_lm_hash;
175: u_char has_nt_hash;
176: u_char has_keys;
177:
178: u_char chap_alg; /* Callers's CHAP algorithm */
179:
180: u_char msChal[CHAP_MSOFTv2_CHAL_LEN]; /* MSOFT challng */
181: u_char ntResp[CHAP_MSOFTv2_RESP_LEN]; /* MSOFT response */
182:
183: #ifdef CCP_MPPC
184: /* Keys when using MS-CHAPv2 or EAP */
185: u_char xmit_key[MPPE_KEY_LEN]; /* xmit start key */
186: u_char recv_key[MPPE_KEY_LEN]; /* recv start key */
187: #endif
188: } msoft;
189: };
190:
191: struct authconf {
192: struct radiusconf radius; /* RADIUS configuration */
193: char authname[AUTH_MAX_AUTHNAME]; /* Configured username */
194: char password[AUTH_MAX_PASSWORD]; /* Configured password */
195: u_int acct_update;
196: u_int acct_update_lim_recv;
197: u_int acct_update_lim_xmit;
198: int timeout; /* Authorization timeout in seconds */
199: struct optinfo options; /* Configured options */
200: char *extauth_script;/* External auth script */
201: char *extacct_script;/* External acct script */
202: char ippool[LINK_MAX_NAME];
203: };
204: typedef struct authconf *AuthConf;
205:
206: /* State of authorization process during authorization phase,
207: * contains params set by the auth-backend */
208: struct auth {
209: u_short peer_to_self; /* What I need from peer */
210: u_short self_to_peer; /* What peer needs from me */
211: u_char peer_to_self_alg; /* What alg I need from peer */
212: u_char self_to_peer_alg; /* What alg peer needs from me */
213: struct pppTimer timer; /* Max time to spend doing auth */
214: struct pppTimer acct_timer; /* Timer for accounting updates */
215: struct papinfo pap; /* PAP state */
216: struct chapinfo chap; /* CHAP state */
217: struct eapinfo eap; /* EAP state */
218: struct paction *thread; /* async auth thread */
219: struct paction *acct_thread; /* async accounting auth thread */
220: struct authconf conf; /* Auth backends, RADIUS, etc. */
221: struct authparams params; /* params to pass to from auth backend */
222: struct ng_ppp_link_stat64 prev_stats; /* Previous link statistics */
223: };
224: typedef struct auth *Auth;
225:
226: struct radiusconf radius; /* RADIUS configuration */
227: /* Interface between the auth-backend (secret file, RADIUS, etc.)
228: * and Mpd's internal structs.
229: */
230: struct authdata {
231: struct authconf conf; /* a copy of bundle's authconf */
232: u_short proto; /* wich proto are we using, PAP, CHAP, ... */
233: u_char alg; /* proto specific algoruthm */
234: u_int id; /* Actual, packet id */
235: u_int code; /* Proto specific code */
236: u_char acct_type; /* Accounting type, Start, Stop, Update */
237: u_char eap_radius;
238: u_char status;
239: u_char why_fail;
240: char *reply_message; /* Text wich may displayed to the user */
241: char *mschap_error; /* MSCHAP Error Message */
242: char *mschapv2resp; /* Response String for MSCHAPv2 */
243: void (*finish)(Link l, struct authdata *auth); /* Finish handler */
244: int drop_user; /* RAD_MPD_DROP_USER value sent by RADIUS server */
245: struct {
246: struct rad_handle *handle; /* the RADIUS handle */
247: } radius;
248: #ifdef USE_OPIE
249: struct {
250: struct opie data;
251: } opie;
252: #endif
253: struct { /* informational (read-only) data needed for e.g. accouting */
254: char msession_id[AUTH_MAX_SESSIONID]; /* multi-session-id */
255: char session_id[AUTH_MAX_SESSIONID]; /* session-id */
256: char ifname[IFNAMSIZ]; /* interface name */
257: uint ifindex; /* System interface index */
258: char bundname[LINK_MAX_NAME];/* name of the bundle */
259: char lnkname[LINK_MAX_NAME]; /* name of the link */
260: struct ng_ppp_link_stat64 stats; /* Current link statistics */
261: #ifdef USE_NG_BPF
262: struct svcstat ss;
263: #endif
264: char *downReason; /* Reason for link going down */
265: time_t last_up; /* Time this link last got up */
266: PhysType phys_type; /* Device type descriptor */
267: int linkID; /* Absolute link number */
268: char peer_ident[64]; /* LCP ident received from peer */
269: struct in_addr peer_addr; /* currently assigned IP-Address of the client */
270: short n_links; /* number of links in the bundle */
271: u_char originate; /* Who originated the connection */
272: } info;
273: struct authparams params; /* params to pass to from auth backend */
274: };
275: typedef struct authdata *AuthData;
276:
277: extern const struct cmdtab AuthSetCmds[];
278:
279: /*
280: * GLOBAL VARIABLES
281: */
282: extern const u_char gMsoftZeros[32];
283: extern int gMaxLogins; /* max number of concurrent logins per user */
284: extern int gMaxLoginsCI;
285:
286: /*
287: * FUNCTIONS
288: */
289:
290: extern void AuthInit(Link l);
291: extern void AuthInst(Auth auth, Auth autht);
292: extern void AuthShutdown(Link l);
293: extern void AuthStart(Link l);
294: extern void AuthStop(Link l);
295: extern void AuthInput(Link l, int proto, Mbuf bp);
296: extern void AuthOutput(Link l, int proto, u_int code, u_int id,
297: const u_char *ptr, int len, int add_len,
298: u_char eap_type);
299: extern void AuthFinish(Link l, int which, int ok);
300: extern void AuthCleanup(Link l);
301: extern int AuthStat(Context ctx, int ac, char *av[], void *arg);
302: extern void AuthAccountStart(Link l, int type);
303: extern void AuthAccountTimeout(void *arg);
304: extern AuthData AuthDataNew(Link l);
305: extern void AuthDataDestroy(AuthData auth);
306: extern int AuthGetData(char *authname, char *password, size_t passlen,
307: struct u_range *range, u_char *range_valid);
308: extern void AuthAsyncStart(Link l, AuthData auth);
309: extern const char *AuthFailMsg(AuthData auth, char *buf, size_t len);
310: extern const char *AuthStatusText(int status);
311: extern const char *AuthMPPEPolicyname(int policy);
312: extern const char *AuthMPPETypesname(int types, char *buf, size_t len);
313:
314: #if defined(USE_NG_BPF) || defined(USE_IPFW)
315: extern void ACLCopy(struct acl *src, struct acl **dst);
316: extern void ACLDestroy(struct acl *acl);
317: #endif
318: extern void authparamsInit(struct authparams *ap);
319: extern void authparamsCopy(struct authparams *src, struct authparams *dst);
320: extern void authparamsMove(struct authparams *src, struct authparams *dst);
321: extern void authparamsDestroy(struct authparams *ap);
322:
323: #endif
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