r25446: Merge some changes I made on the way home from SFO:
[kai/samba.git] / source4 / ldap_server / ldap_backend.c
index 0c8d9da45b9b63bbcf16d0404aa83772d0598ba8..25d19a5a588f6df70fb33455e5b6c18811c12801 100644 (file)
@@ -5,7 +5,7 @@
    
    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
-   the Free Software Foundation; either version 2 of the License, or
+   the Free Software Foundation; either version 3 of the License, or
    (at your option) any later version.
    
    This program is distributed in the hope that it will be useful,
    GNU General Public License for more details.
    
    You should have received a copy of the GNU General Public License
-   along with this program; if not, write to the Free Software
-   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
 
 #include "includes.h"
 #include "ldap_server/ldap_server.h"
-#include "dlinklist.h"
+#include "lib/util/dlinklist.h"
 #include "libcli/ldap/ldap.h"
 #include "lib/ldb/include/ldb.h"
 #include "lib/ldb/include/ldb_errors.h"
-#include "dsdb/samdb/samdb.h"
+#include "lib/db_wrap.h"
+#include "auth/credentials/credentials.h"
+#include "auth/gensec/gensec.h"
+#include "param/param.h"
 
 #define VALID_DN_SYNTAX(dn,i) do {\
        if (!(dn)) {\
                return NT_STATUS_NO_MEMORY;\
-       } else if ((dn)->comp_num < (i)) {\
+       } else if ( ! ldb_dn_validate(dn)) {\
+               result = LDAP_INVALID_DN_SYNTAX;\
+               errstr = "Invalid DN format";\
+               goto reply;\
+       } else if (ldb_dn_get_comp_num(dn) < (i)) {\
                result = LDAP_INVALID_DN_SYNTAX;\
                errstr = "Invalid DN (" #i " components needed for '" #dn "')";\
                goto reply;\
@@ -49,11 +55,40 @@ static int map_ldb_error(struct ldb_context *ldb, int err, const char **errstrin
 */
 NTSTATUS ldapsrv_backend_Init(struct ldapsrv_connection *conn) 
 {
-       conn->ldb = samdb_connect(conn, conn->session_info);
+       conn->ldb = ldb_wrap_connect(conn, 
+                                    global_loadparm,
+                                    lp_sam_url(global_loadparm), conn->session_info,
+                                    NULL, conn->global_catalog ? LDB_FLG_RDONLY : 0, NULL);
        if (conn->ldb == NULL) {
                return NT_STATUS_INTERNAL_DB_CORRUPTION;
        }
-       ldb_set_opaque(conn->ldb, "server_credentials", conn->server_credentials);
+
+       if (conn->server_credentials) {
+               char **sasl_mechs = NULL;
+               struct gensec_security_ops **backends = gensec_security_all();
+               struct gensec_security_ops **ops
+                       = gensec_use_kerberos_mechs(conn, backends, conn->server_credentials);
+               int i, j = 0;
+               for (i = 0; ops && ops[i]; i++) {
+                       if (ops[i]->sasl_name && ops[i]->server_start) {
+                               char *sasl_name = talloc_strdup(conn, ops[i]->sasl_name);
+
+                               if (!sasl_name) {
+                                       return NT_STATUS_NO_MEMORY;
+                               }
+                               sasl_mechs = talloc_realloc(conn, sasl_mechs, char *, j + 2);
+                               if (!sasl_mechs) {
+                                       return NT_STATUS_NO_MEMORY;
+                               }
+                               sasl_mechs[j] = sasl_name;
+                               talloc_steal(sasl_mechs, sasl_name);
+                               sasl_mechs[j+1] = NULL;
+                               j++;
+                       }
+               }
+               talloc_free(ops);
+               ldb_set_opaque(conn->ldb, "supportedSASLMechanims", sasl_mechs);
+       }
 
        return NT_STATUS_OK;
 }
@@ -84,7 +119,7 @@ void ldapsrv_queue_reply(struct ldapsrv_call *call, struct ldapsrv_reply *reply)
        DLIST_ADD_END(call->replies, reply, struct ldapsrv_reply *);
 }
 
-NTSTATUS ldapsrv_unwilling(struct ldapsrv_call *call, int error)
+static NTSTATUS ldapsrv_unwilling(struct ldapsrv_call *call, int error)
 {
        struct ldapsrv_reply *reply;
        struct ldap_ExtendedResponse *r;
@@ -108,65 +143,6 @@ NTSTATUS ldapsrv_unwilling(struct ldapsrv_call *call, int error)
        return NT_STATUS_OK;
 }
 
-static int ldapsrv_SearchCallback(struct ldb_context *ldb, void *context, struct ldb_async_result *ares)
-{
-       struct ldb_result *res;
-       int n;
-       
-       if (!context || !ares) {
-               DEBUG(3, ("NULL Context or Ares in ldapsrv_SearchCallback"));
-               return LDB_ERR_OPERATIONS_ERROR;
-       }       
-
-       res = talloc_get_type(context, struct ldb_result);
-
-       if (ares->type == LDB_REPLY_ENTRY) {
-               res->msgs = talloc_realloc(res, res->msgs, struct ldb_message *, res->count + 2);
-               if (! res->msgs) {
-                       goto error;
-               }
-
-               res->msgs[res->count + 1] = NULL;
-
-               res->msgs[res->count] = talloc_steal(res->msgs, ares->message);
-               if (! res->msgs[res->count]) {
-                       goto error;
-               }
-
-               res->count++;
-       }
-
-       if (ares->type == LDB_REPLY_REFERRAL) {
-               if (res->refs) {
-                       for (n = 0; res->refs[n]; n++) /*noop*/ ;
-               } else {
-                       n = 0;
-               }
-
-               res->refs = talloc_realloc(res, res->refs, char *, n + 2);
-               if (! res->refs) {
-                       goto error;
-               }
-
-               res->refs[n] = talloc_steal(res->refs, ares->referral);
-               res->refs[n + 1] = NULL;
-       }
-
-       if (ares->controls) {
-               res->controls = talloc_steal(res, ares->controls);
-               if (! res->controls) {
-                       goto error;
-               }
-       }
-
-       talloc_free(ares);
-       return LDB_SUCCESS;
-
-error:
-       talloc_free(ares);
-       return LDB_ERR_OPERATIONS_ERROR;
-}
-
 static NTSTATUS ldapsrv_SearchRequest(struct ldapsrv_call *call)
 {
        struct ldap_SearchRequest *req = &call->request->r.SearchRequest;
@@ -180,7 +156,7 @@ static NTSTATUS ldapsrv_SearchRequest(struct ldapsrv_call *call)
        struct ldb_request *lreq;
        enum ldb_scope scope = LDB_SCOPE_DEFAULT;
        const char **attrs = NULL;
-       const char *errstr = NULL;
+       const char *scope_str, *errstr = NULL;
        int success_limit = 1;
        int result = -1;
        int ldb_ret = -1;
@@ -193,7 +169,7 @@ static NTSTATUS ldapsrv_SearchRequest(struct ldapsrv_call *call)
        local_ctx = talloc_new(call);
        NT_STATUS_HAVE_NO_MEMORY(local_ctx);
 
-       basedn = ldb_dn_explode(local_ctx, req->basedn);
+       basedn = ldb_dn_new(local_ctx, samdb, req->basedn);
        VALID_DN_SYNTAX(basedn, 0);
 
        DEBUG(10, ("SearchRequest: basedn: [%s]\n", req->basedn));
@@ -201,24 +177,29 @@ static NTSTATUS ldapsrv_SearchRequest(struct ldapsrv_call *call)
 
        switch (req->scope) {
                case LDAP_SEARCH_SCOPE_BASE:
-                       DEBUG(10,("SearchRequest: scope: [BASE]\n"));
+                       scope_str = "BASE";
                        scope = LDB_SCOPE_BASE;
                        success_limit = 0;
                        break;
                case LDAP_SEARCH_SCOPE_SINGLE:
-                       DEBUG(10,("SearchRequest: scope: [ONE]\n"));
+                       scope_str = "ONE";
                        scope = LDB_SCOPE_ONELEVEL;
                        success_limit = 0;
                        break;
                case LDAP_SEARCH_SCOPE_SUB:
-                       DEBUG(10,("SearchRequest: scope: [SUB]\n"));
+                       scope_str = "SUB";
                        scope = LDB_SCOPE_SUBTREE;
                        success_limit = 0;
                        break;
+               default:
+                       result = LDAP_PROTOCOL_ERROR;
+                       errstr = "Invalid scope";
+                       goto reply;
        }
+       DEBUG(10,("SearchRequest: scope: [%s]\n", scope_str));
 
        if (req->num_attributes >= 1) {
-               attrs = talloc_array(samdb, const char *, req->num_attributes+1);
+               attrs = talloc_array(local_ctx, const char *, req->num_attributes+1);
                NT_STATUS_HAVE_NO_MEMORY(attrs);
 
                for (i=0; i < req->num_attributes; i++) {
@@ -228,8 +209,8 @@ static NTSTATUS ldapsrv_SearchRequest(struct ldapsrv_call *call)
                attrs[i] = NULL;
        }
 
-       DEBUG(5,("ldb_request dn=%s filter=%s\n", 
-                req->basedn, ldb_filter_from_tree(call, req->tree)));
+       DEBUG(5,("ldb_request %s dn=%s filter=%s\n", 
+                scope_str, req->basedn, ldb_filter_from_tree(call, req->tree)));
 
        lreq = talloc(local_ctx, struct ldb_request);
        NT_STATUS_HAVE_NO_MEMORY(lreq);
@@ -245,9 +226,26 @@ static NTSTATUS ldapsrv_SearchRequest(struct ldapsrv_call *call)
 
        lreq->controls = call->request->controls;
 
-       lreq->async.context = res;
-       lreq->async.callback = ldapsrv_SearchCallback;
-       lreq->async.timeout = 600;
+       if (call->conn->global_catalog) {
+               struct ldb_control *search_control = ldb_request_get_control(lreq, LDB_CONTROL_SEARCH_OPTIONS_OID);
+               
+               struct ldb_search_options_control *search_options = NULL;
+               if (search_control) {
+                       search_options = talloc_get_type(search_control->data, struct ldb_search_options_control);
+                       search_options->search_options |= LDB_SEARCH_OPTION_PHANTOM_ROOT;
+               } else {
+                       search_options = talloc(lreq, struct ldb_search_options_control);
+                       NT_STATUS_HAVE_NO_MEMORY(search_options);
+                       search_options->search_options = LDB_SEARCH_OPTION_PHANTOM_ROOT;
+                       ldb_request_add_control(lreq, LDB_CONTROL_SEARCH_OPTIONS_OID, false, search_options);
+               }
+       }
+
+       lreq->context = res;
+       lreq->callback = ldb_search_default_callback;
+
+       /* Copy the timeout from the incoming call */
+       ldb_set_timeout(samdb, lreq, req->timelimit);
 
        ldb_ret = ldb_request(samdb, lreq);
 
@@ -255,7 +253,7 @@ static NTSTATUS ldapsrv_SearchRequest(struct ldapsrv_call *call)
                goto reply;
        }
 
-       ldb_ret = ldb_async_wait(lreq->async.handle, LDB_WAIT_ALL);
+       ldb_ret = ldb_wait(lreq->handle, LDB_WAIT_ALL);
 
        if (ldb_ret == LDB_SUCCESS) {
                for (i = 0; i < res->count; i++) {
@@ -263,7 +261,7 @@ static NTSTATUS ldapsrv_SearchRequest(struct ldapsrv_call *call)
                        NT_STATUS_HAVE_NO_MEMORY(ent_r);
 
                        ent = &ent_r->msg->r.SearchResultEntry;
-                       ent->dn = ldb_dn_linearize(ent_r, res->msgs[i]->dn);
+                       ent->dn = ldb_dn_alloc_linearized(ent_r, res->msgs[i]->dn);
                        ent->num_attributes = 0;
                        ent->attributes = NULL;
                        if (res->msgs[i]->num_elements == 0) {
@@ -345,7 +343,7 @@ static NTSTATUS ldapsrv_ModifyRequest(struct ldapsrv_call *call)
        local_ctx = talloc_named(call, 0, "ModifyRequest local memory context");
        NT_STATUS_HAVE_NO_MEMORY(local_ctx);
 
-       dn = ldb_dn_explode(local_ctx, req->dn);
+       dn = ldb_dn_new(local_ctx, samdb, req->dn);
        VALID_DN_SYNTAX(dn, 1);
 
        DEBUG(10, ("ModifyRequest: dn: [%s]\n", req->dn));
@@ -354,7 +352,6 @@ static NTSTATUS ldapsrv_ModifyRequest(struct ldapsrv_call *call)
        NT_STATUS_HAVE_NO_MEMORY(msg);
 
        msg->dn = dn;
-       msg->private_data = NULL;
        msg->num_elements = 0;
        msg->elements = NULL;
 
@@ -386,7 +383,8 @@ static NTSTATUS ldapsrv_ModifyRequest(struct ldapsrv_call *call)
 
                        msg->elements[i].num_values = req->mods[i].attrib.num_values;
                        if (msg->elements[i].num_values > 0) {
-                               msg->elements[i].values = talloc_array(msg, struct ldb_val, msg->elements[i].num_values);
+                               msg->elements[i].values = talloc_array(msg->elements, struct ldb_val,
+                                                                      msg->elements[i].num_values);
                                NT_STATUS_HAVE_NO_MEMORY(msg->elements[i].values);
 
                                for (j=0; j < msg->elements[i].num_values; j++) {
@@ -448,7 +446,7 @@ static NTSTATUS ldapsrv_AddRequest(struct ldapsrv_call *call)
        local_ctx = talloc_named(call, 0, "AddRequest local memory context");
        NT_STATUS_HAVE_NO_MEMORY(local_ctx);
 
-       dn = ldb_dn_explode(local_ctx, req->dn);
+       dn = ldb_dn_new(local_ctx, samdb, req->dn);
        VALID_DN_SYNTAX(dn,1);
 
        DEBUG(10, ("AddRequest: dn: [%s]\n", req->dn));
@@ -457,7 +455,6 @@ static NTSTATUS ldapsrv_AddRequest(struct ldapsrv_call *call)
        NT_STATUS_HAVE_NO_MEMORY(msg);
 
        msg->dn = dn;
-       msg->private_data = NULL;
        msg->num_elements = 0;
        msg->elements = NULL;
 
@@ -474,7 +471,8 @@ static NTSTATUS ldapsrv_AddRequest(struct ldapsrv_call *call)
                        
                        if (req->attributes[i].num_values > 0) {
                                msg->elements[i].num_values = req->attributes[i].num_values;
-                               msg->elements[i].values = talloc_array(msg, struct ldb_val, msg->elements[i].num_values);
+                               msg->elements[i].values = talloc_array(msg->elements, struct ldb_val,
+                                                                      msg->elements[i].num_values);
                                NT_STATUS_HAVE_NO_MEMORY(msg->elements[i].values);
 
                                for (j=0; j < msg->elements[i].num_values; j++) {
@@ -538,7 +536,7 @@ static NTSTATUS ldapsrv_DelRequest(struct ldapsrv_call *call)
        local_ctx = talloc_named(call, 0, "DelRequest local memory context");
        NT_STATUS_HAVE_NO_MEMORY(local_ctx);
 
-       dn = ldb_dn_explode(local_ctx, req->dn);
+       dn = ldb_dn_new(local_ctx, samdb, req->dn);
        VALID_DN_SYNTAX(dn,1);
 
        DEBUG(10, ("DelRequest: dn: [%s]\n", req->dn));
@@ -571,7 +569,7 @@ static NTSTATUS ldapsrv_ModifyDNRequest(struct ldapsrv_call *call)
        struct ldapsrv_reply *modifydn_r;
        void *local_ctx;
        struct ldb_context *samdb = call->conn->ldb;
-       struct ldb_dn *olddn, *newdn, *newrdn;
+       struct ldb_dn *olddn, *newdn=NULL, *newrdn;
        struct ldb_dn *parentdn = NULL;
        const char *errstr = NULL;
        int result = LDAP_SUCCESS;
@@ -584,10 +582,10 @@ static NTSTATUS ldapsrv_ModifyDNRequest(struct ldapsrv_call *call)
        local_ctx = talloc_named(call, 0, "ModifyDNRequest local memory context");
        NT_STATUS_HAVE_NO_MEMORY(local_ctx);
 
-       olddn = ldb_dn_explode(local_ctx, req->dn);
+       olddn = ldb_dn_new(local_ctx, samdb, req->dn);
        VALID_DN_SYNTAX(olddn, 2);
 
-       newrdn = ldb_dn_explode(local_ctx, req->newrdn);
+       newrdn = ldb_dn_new(local_ctx, samdb, req->newrdn);
        VALID_DN_SYNTAX(newrdn, 1);
 
        DEBUG(10, ("ModifyDNRequest: olddn: [%s]\n", req->dn));
@@ -600,18 +598,12 @@ static NTSTATUS ldapsrv_ModifyDNRequest(struct ldapsrv_call *call)
                goto reply;
        }
 
-       if (newrdn->comp_num > 1) {
-               result = LDAP_NAMING_VIOLATION;
-               errstr = "Error new RDN invalid";
-               goto reply;
-       }
-
        if (req->newsuperior) {
-               parentdn = ldb_dn_explode(local_ctx, req->newsuperior);
+               parentdn = ldb_dn_new(local_ctx, samdb, req->newsuperior);
                VALID_DN_SYNTAX(parentdn, 0);
                DEBUG(10, ("ModifyDNRequest: newsuperior: [%s]\n", req->newsuperior));
                
-               if (parentdn->comp_num < 1) {
+               if (ldb_dn_get_comp_num(parentdn) < 1) {
                        result = LDAP_AFFECTS_MULTIPLE_DSAS;
                        errstr = "Error new Superior DN invalid";
                        goto reply;
@@ -623,8 +615,14 @@ static NTSTATUS ldapsrv_ModifyDNRequest(struct ldapsrv_call *call)
                NT_STATUS_HAVE_NO_MEMORY(parentdn);
        }
 
-       newdn = ldb_dn_make_child(local_ctx, ldb_dn_get_rdn(local_ctx, newrdn), parentdn);
-       NT_STATUS_HAVE_NO_MEMORY(newdn);
+       if ( ! ldb_dn_add_child_fmt(parentdn,
+                               "%s=%s",
+                               ldb_dn_get_rdn_name(newrdn),
+                               (char *)ldb_dn_get_rdn_val(newrdn)->data)) {
+               result = LDAP_OTHER;
+               goto reply;
+       }
+       newdn = parentdn;
 
 reply:
        modifydn_r = ldapsrv_init_reply(call, LDAP_TAG_ModifyDNResponse);
@@ -668,7 +666,7 @@ static NTSTATUS ldapsrv_CompareRequest(struct ldapsrv_call *call)
        local_ctx = talloc_named(call, 0, "CompareRequest local_memory_context");
        NT_STATUS_HAVE_NO_MEMORY(local_ctx);
 
-       dn = ldb_dn_explode(local_ctx, req->dn);
+       dn = ldb_dn_new(local_ctx, samdb, req->dn);
        VALID_DN_SYNTAX(dn, 1);
 
        DEBUG(10, ("CompareRequest: dn: [%s]\n", req->dn));
@@ -686,7 +684,7 @@ reply:
 
        if (result == LDAP_SUCCESS) {
                ldb_ret = ldb_search(samdb, dn, LDB_SCOPE_BASE, filter, attrs, &res);
-               talloc_steal(samdb, res);
+               talloc_steal(local_ctx, res);
                if (ldb_ret != LDB_SUCCESS) {
                        result = map_ldb_error(samdb, ldb_ret, &errstr);
                        DEBUG(10,("CompareRequest: error: %s\n", errstr));
@@ -724,24 +722,6 @@ static NTSTATUS ldapsrv_AbandonRequest(struct ldapsrv_call *call)
        return NT_STATUS_OK;
 }
 
-static NTSTATUS ldapsrv_ExtendedRequest(struct ldapsrv_call *call)
-{
-/*     struct ldap_ExtendedRequest *req = &call->request.r.ExtendedRequest;*/
-       struct ldapsrv_reply *reply;
-
-       DEBUG(10, ("Extended\n"));
-
-       reply = ldapsrv_init_reply(call, LDAP_TAG_ExtendedResponse);
-       if (!reply) {
-               return NT_STATUS_NO_MEMORY;
-       }
-
-       ZERO_STRUCT(reply->msg->r);
-
-       ldapsrv_queue_reply(call, reply);
-       return NT_STATUS_OK;
-}
-
 NTSTATUS ldapsrv_do_call(struct ldapsrv_call *call)
 {
        switch(call->request->type) {
@@ -769,5 +749,3 @@ NTSTATUS ldapsrv_do_call(struct ldapsrv_call *call)
                return ldapsrv_unwilling(call, 2);
        }
 }
-
-