102f3f6439
git-svn-id: svn://svn.h5l.se/heimdal/trunk/heimdal@2058 ec53bebd-3082-4978-b11e-865c3cabbd6b
139 lines
3.2 KiB
C
139 lines
3.2 KiB
C
#include "krb5_locl.h"
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RCSID("$Id$");
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/*
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* The format seems to be:
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* client -> server
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*
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* 4 bytes - length
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* KRB5_SENDAUTH_V1.0 (including zero)
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* 4 bytes - length
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* protocol string (with terminating zero)
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*
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* server -> client
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* 4 bytes - length (0 = OK, else length of error)
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* (error)
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*
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* client -> server
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* 4 bytes - length
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* AP-REQ
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*
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* server -> client
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* 4 bytes - length
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* AP-REP
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*/
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krb5_error_code
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krb5_sendauth(krb5_context context,
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krb5_auth_context *auth_context,
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krb5_pointer p_fd,
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char *appl_version,
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krb5_principal client,
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krb5_principal server,
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krb5_flags ap_req_options,
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krb5_data *in_data,
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krb5_creds *in_creds,
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krb5_ccache ccache,
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/*krb5_error*/ void **error,
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krb5_ap_rep_enc_part **rep_result,
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krb5_creds **out_creds)
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{
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krb5_error_code ret;
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int fd = *((int *)p_fd);
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u_int32_t len, net_len;
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const char *version = KRB5_SENDAUTH_VERSION;
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u_char repl;
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krb5_data ap_req;
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krb5_creds this_cred;
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krb5_creds *creds;
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len = strlen(version) + 1;
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net_len = htonl(len);
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if (krb5_net_write (context, fd, &net_len, 4) != 4
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|| krb5_net_write (context, fd, version, len) != len)
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return errno;
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len = strlen(appl_version) + 1;
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net_len = htonl(len);
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if (krb5_net_write (context, fd, &net_len, 4) != 4
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|| krb5_net_write (context, fd, appl_version, len) != len)
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return errno;
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if (krb5_net_read (context, fd, &repl, sizeof(repl)) != sizeof(repl))
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return errno;
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if (repl != 0)
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return KRB5_SENDAUTH_BADRESPONSE; /* XXX */
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if (in_creds == NULL) {
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if (client == NULL) {
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ret = krb5_cc_get_principal (context, ccache, &client);
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if (ret)
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return ret;
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}
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this_cred.client = client;
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this_cred.server = server;
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this_cred.times.endtime = 0;
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this_cred.ticket.length = 0;
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in_creds = &this_cred;
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}
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if (in_creds->ticket.length == 0) {
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ret = krb5_get_credentials (context, 0, ccache, in_creds, &creds);
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if (ret)
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return ret;
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} else {
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creds = in_creds;
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}
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if (out_creds)
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*out_creds = creds;
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ret = krb5_mk_req_extended (context,
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auth_context,
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ap_req_options,
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in_data,
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creds,
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&ap_req);
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if (ret)
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return ret;
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len = htonl(ap_req.length);
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if (krb5_net_write (context, fd, &len, 4) != 4
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|| krb5_net_write (context, fd,
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ap_req.data, ap_req.length) != ap_req.length)
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return errno;
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krb5_data_free (&ap_req);
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if (krb5_net_read (context, fd, &len, 4) != 4)
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return errno;
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if (len != 0)
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return KRB5_SENDAUTH_REJECTED;
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if (ap_req_options & AP_OPTS_MUTUAL_REQUIRED) {
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krb5_data ap_rep;
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krb5_ap_rep_enc_part *ignore;
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if (krb5_net_read (context, fd, &len, 4) != 4)
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return errno;
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len = ntohl(len);
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ap_rep.length = len;
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ap_rep.data = malloc (len);
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if (ap_rep.data == NULL)
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return ENOMEM;
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if (krb5_net_read (context, fd, ap_rep.data, len) != len)
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return errno;
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ret = krb5_rd_rep (context, *auth_context, &ap_rep,
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rep_result ? rep_result : &ignore);
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if (ret)
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return ret;
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if (rep_result == NULL)
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krb5_free_ap_rep_enc_part (context, ignore);
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krb5_data_free (&ap_rep);
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}
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return 0;
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}
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