6 * Copyright (C) 1987 by the Massachusetts Institute of Technology
7 * For copying and distribution information, please see the file
13 static char *rcsid_sms_sauth_c = "$Header$";
16 #include <mit-copyright.h>
18 #include "mr_server.h"
24 extern char *whoami, *host;
27 char *kname_unparse(char *, char *, char *);
29 typedef struct _replay_cache {
32 struct _replay_cache *next;
35 replay_cache *rcache = NULL;
38 * Handle a MOIRA_AUTH RPC request.
40 * argv[0] is a kerberos authenticator. Decompose it, and if
41 * successful, store the name the user authenticated to in
45 void do_auth(client *cl)
51 replay_cache *rc, *rcnew;
54 auth.length = cl->args->mr_argl[0];
55 memcpy(auth.dat, cl->args->mr_argv[0], auth.length);
58 if ((status = krb_rd_req (&auth, MOIRA_SNAME, host,
59 cl->haddr.sin_addr.s_addr, &ad, "")))
61 status += ERROR_TABLE_BASE_krb;
62 cl->reply.mr_status = status;
63 if (log_flags & LOG_RES)
64 com_err(whoami, status, " (authentication failed)");
70 rcache = malloc(sizeof(replay_cache));
71 memset(rcache, 0, sizeof(replay_cache));
74 /* scan replay cache */
75 for (rc = rcache->next; rc; rc = rc->next)
77 if (auth.length == rc->auth.length &&
78 !memcmp(&(auth.dat), &(rc->auth.dat), auth.length))
81 "Authenticator replay from %s using authenticator for %s",
82 inet_ntoa(cl->haddr.sin_addr),
83 kname_unparse(ad.pname, ad.pinst, ad.prealm));
84 com_err(whoami, KE_RD_AP_REPEAT, " (authentication failed)");
85 cl->reply.mr_status = KE_RD_AP_REPEAT;
92 rcnew = malloc(sizeof(replay_cache));
93 memcpy(&(rcnew->auth), &auth, sizeof(KTEXT_ST));
94 rcnew->expires = now + 2 * CLOCK_SKEW;
95 rcnew->next = rcache->next;
99 for (rc = rcnew; rc->next; )
101 if (rc->next->expires < now)
104 rc->next = rc->next->next;
111 memcpy(cl->kname.name, ad.pname, ANAME_SZ);
112 memcpy(cl->kname.inst, ad.pinst, INST_SZ);
113 memcpy(cl->kname.realm, ad.prealm, REALM_SZ);
114 strcpy(cl->clname, kname_unparse(ad.pname, ad.pinst, ad.prealm));
116 if (ad.pinst[0] == 0 && !strcmp(ad.prealm, krb_realm))
120 /* this is in a separate function because it accesses the database */
121 status = set_krb_mapping(cl->clname, ad.pname, ok,
122 &cl->client_id, &cl->users_id);
124 if (cl->args->mr_version_no == MR_VERSION_2)
126 strncpy(cl->entity, cl->args->mr_argv[1], 8);
130 strcpy(cl->entity, "???");
131 memset(&ad, 0, sizeof(ad)); /* Clean up session key, etc. */
133 if (log_flags & LOG_RES)
135 com_err(whoami, 0, "Auth to %s using %s, uid %d cid %d",
136 cl->clname, cl->entity, cl->users_id, cl->client_id);
138 if (status != MR_SUCCESS)
139 cl->reply.mr_status = status;
140 else if (cl->users_id == 0)
141 cl->reply.mr_status = MR_USER_AUTH;