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      1 /*
      2  * appl/telnet/libtelnet/forward.c
      3  */
      4 
      5 /*
      6  * Copyright (c) 1983 Regents of the University of California.
      7  * All rights reserved.
      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 University of California, Berkeley.  The name of the
     15  * University 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 
     22 
     23 /* General-purpose forwarding routines. These routines may be put into */
     24 /* libkrb5.a to allow widespread use */
     25 
     26 #if defined(KERBEROS) || defined(KRB5)
     27 #include <stdio.h>
     28 #include <netdb.h>
     29 
     30 #include "k5-int.h"
     31 
     32 extern char *line;		/* see sys_term.c */
     33 
     34 krb5_error_code rd_and_store_for_creds(krb5_context, krb5_auth_context, krb5_data *, krb5_ticket *);
     35 
     36 /* Decode, decrypt and store the forwarded creds in the local ccache. */
     37 krb5_error_code
     38 rd_and_store_for_creds(context, auth_context, inbuf, ticket)
     39     krb5_context context;
     40     krb5_auth_context auth_context;
     41     krb5_data *inbuf;
     42     krb5_ticket *ticket;
     43 {
     44     krb5_creds **creds;
     45     krb5_error_code retval;
     46     char ccname[35];
     47     krb5_ccache ccache = NULL;
     48 
     49     if ((retval = krb5_rd_cred(context, auth_context, inbuf, &creds, NULL)) != 0)
     50 	return(retval);
     51 
     52     snprintf(ccname, sizeof(ccname), "FILE:/tmp/krb5cc_p%d", getpid());
     53     setenv(KRB5_ENV_CCNAME, ccname, 1);
     54 
     55     if ((retval = krb5_cc_resolve(context, ccname, &ccache)) != 0)
     56 	goto cleanup;
     57 
     58     if ((retval = krb5_cc_initialize(context, ccache, ticket->enc_part2->client)) != 0)
     59 	goto cleanup;
     60 
     61     if ((retval = krb5_cc_store_cred(context, ccache, *creds)) != 0)
     62 	goto cleanup;
     63 
     64 cleanup:
     65     krb5_free_creds(context, *creds);
     66     return retval;
     67 }
     68 
     69 #endif /* defined(KRB5) && defined(FORWARD) */
     70