source4/ldap_server/ldap_bind.c

   1 /*
   2    Unix SMB/CIFS implementation.
   3    LDAP server
   4    Copyright (C) Stefan Metzmacher 2004
   5
   6    This program is free software; you can redistribute it and/or modify
   7    it under the terms of the GNU General Public License as published by
   8    the Free Software Foundation; either version 2 of the License, or
   9    (at your option) any later version.
  10
  11    This program is distributed in the hope that it will be useful,
  12    but WITHOUT ANY WARRANTY; without even the implied warranty of
  13    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14    GNU General Public License for more details.
  15
  16    You should have received a copy of the GNU General Public License
  17    along with this program; if not, write to the Free Software
  18    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  19 */
  20
  21 #include "includes.h"
  22 #include "ldap_server/ldap_server.h"
  23 #include "auth/auth.h"
  24 #include "libcli/ldap/ldap.h"
  25 #include "smbd/service_stream.h"
  26
  27 static NTSTATUS ldapsrv_BindSimple(struct ldapsrv_call *call)
  28 {
  29         struct ldap_BindRequest *req = &call->request->r.BindRequest;
  30         struct ldapsrv_reply *reply;
  31         struct ldap_BindResponse *resp;
  32
  33         DEBUG(10, ("BindSimple dn: %s\n",req->dn));
  34
  35         reply = ldapsrv_init_reply(call, LDAP_TAG_BindResponse);
  36         if (!reply) {
  37                 return NT_STATUS_NO_MEMORY;
  38         }
  39
  40         resp = &reply->msg->r.BindResponse;
  41         resp->response.resultcode = 0;
  42         resp->response.dn = NULL;
  43         resp->response.errormessage = NULL;
  44         resp->response.referral = NULL;
  45         resp->SASL.secblob = data_blob(NULL, 0);
  46
  47         ldapsrv_queue_reply(call, reply);
  48         return NT_STATUS_OK;
  49 }
  50
  51 static NTSTATUS ldapsrv_BindSASL(struct ldapsrv_call *call)
  52 {
  53         struct ldap_BindRequest *req = &call->request->r.BindRequest;
  54         struct ldapsrv_reply *reply;
  55         struct ldap_BindResponse *resp;
  56         struct ldapsrv_connection *conn;
  57         int result;
  58         const char *errstr;
  59         NTSTATUS status = NT_STATUS_OK;
  60
  61         DEBUG(10, ("BindSASL dn: %s\n",req->dn));
  62
  63         if (!call->conn->gensec) {
  64                 call->conn->session_info = NULL;
  65
  66                 status = gensec_server_start(call->conn, &call->conn->gensec,
  67                                              call->conn->connection->event.ctx);
  68                 if (!NT_STATUS_IS_OK(status)) {
  69                         DEBUG(1, ("Failed to start GENSEC server code: %s\n", nt_errstr(status)));
  70                         return status;
  71                 }
  72
  73                 gensec_set_target_service(call->conn->gensec, "ldap");
  74
  75                 gensec_want_feature(call->conn->gensec, GENSEC_FEATURE_SIGN);
  76                 gensec_want_feature(call->conn->gensec, GENSEC_FEATURE_SEAL);
  77                 gensec_want_feature(call->conn->gensec, GENSEC_FEATURE_ASYNC_REPLIES);
  78
  79                 status = gensec_start_mech_by_sasl_name(call->conn->gensec, req->creds.SASL.mechanism);
  80                 if (!NT_STATUS_IS_OK(status)) {
  81                         DEBUG(1, ("Failed to start GENSEC SASL[%s] server code: %s\n",
  82                                 req->creds.SASL.mechanism, nt_errstr(status)));
  83                         goto reply;
  84                 }
  85         }
  86
  87 reply:
  88         reply = ldapsrv_init_reply(call, LDAP_TAG_BindResponse);
  89         if (!reply) {
  90                 return NT_STATUS_NO_MEMORY;
  91         }
  92         resp = &reply->msg->r.BindResponse;
  93
  94         conn = call->conn;
  95
  96         if (NT_STATUS_IS_OK(status)) {
  97                 status = gensec_update(call->conn->gensec, reply,
  98                                        req->creds.SASL.secblob, &resp->SASL.secblob);
  99         }
 100
 101         if (NT_STATUS_EQUAL(NT_STATUS_MORE_PROCESSING_REQUIRED, status)) {
 102                 result = LDAP_SASL_BIND_IN_PROGRESS;
 103                 errstr = NULL;
 104         } else if (NT_STATUS_IS_OK(status)) {
 105                 result = LDAP_SUCCESS;
 106                 errstr = NULL;
 107                 if (gensec_have_feature(call->conn->gensec, GENSEC_FEATURE_SEAL) ||
 108                     gensec_have_feature(call->conn->gensec, GENSEC_FEATURE_SIGN)) {
 109                         call->conn->enable_wrap = True;
 110                 }
 111         } else {
 112                 result = 49;
 113                 errstr = talloc_asprintf(reply, "SASL:[%s]: %s", req->creds.SASL.mechanism, nt_errstr(status));
 114         }
 115
 116         resp->response.resultcode = result;
 117         resp->response.dn = NULL;
 118         resp->response.errormessage = errstr;
 119         resp->response.referral = NULL;
 120
 121         ldapsrv_queue_reply(call, reply);
 122         return NT_STATUS_OK;
 123 }
 124
 125 NTSTATUS ldapsrv_BindRequest(struct ldapsrv_call *call)
 126 {
 127         struct ldap_BindRequest *req = &call->request->r.BindRequest;
 128         struct ldapsrv_reply *reply;
 129         struct ldap_BindResponse *resp;
 130
 131         switch (req->mechanism) {
 132                 case LDAP_AUTH_MECH_SIMPLE:
 133                         return ldapsrv_BindSimple(call);
 134                 case LDAP_AUTH_MECH_SASL:
 135                         return ldapsrv_BindSASL(call);
 136         }
 137
 138         reply = ldapsrv_init_reply(call, LDAP_TAG_BindResponse);
 139         if (!reply) {
 140                 return NT_STATUS_NO_MEMORY;
 141         }
 142
 143         resp = &reply->msg->r.BindResponse;
 144         resp->response.resultcode = 7;
 145         resp->response.dn = NULL;
 146         resp->response.errormessage = talloc_asprintf(reply, "Bad AuthenticationChoice [%d]", req->mechanism);
 147         resp->response.referral = NULL;
 148         resp->SASL.secblob = data_blob(NULL, 0);
 149
 150         ldapsrv_queue_reply(call, reply);
 151         return NT_STATUS_OK;
 152 }
 153
 154 NTSTATUS ldapsrv_UnbindRequest(struct ldapsrv_call *call)
 155 {
 156         DEBUG(10, ("UnbindRequest\n"));
 157         return NT_STATUS_OK;
 158 }