source: vendor/3.6.24/source4/libnet/groupman.c

/* 
   Unix SMB/CIFS implementation.

   Copyright (C) Rafal Szczesniak 2007
   
   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 3 of the License, or
   (at your option) any later version.
   
   This program is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   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, see <http://www.gnu.org/licenses/>.
*/

/*
  a composite function for manipulating (add/edit/del) groups via samr pipe
*/

#include "includes.h"
#include "libcli/composite/composite.h"
#include "libnet/libnet.h"
#include "librpc/gen_ndr/ndr_samr_c.h"


struct groupadd_state {
        struct dcerpc_pipe *pipe;
        struct policy_handle domain_handle;
        struct samr_CreateDomainGroup creategroup;
        struct policy_handle group_handle;
        uint32_t group_rid;
        
        void (*monitor_fn)(struct monitor_msg*);
};


static void continue_groupadd_created(struct tevent_req *subreq);


struct composite_context* libnet_rpc_groupadd_send(struct dcerpc_pipe *p,
                                                   struct libnet_rpc_groupadd *io,
                                                   void (*monitor)(struct monitor_msg*))
{
        struct composite_context *c;
        struct groupadd_state *s;
        struct tevent_req *subreq;

        if (!p || !io) return NULL;

        c = composite_create(p, dcerpc_event_context(p));
        if (c == NULL) return NULL;

        s = talloc_zero(c, struct groupadd_state);
        if (composite_nomem(s, c)) return c;

        c->private_data = s;

        s->domain_handle = io->in.domain_handle;
        s->pipe          = p;
        s->monitor_fn    = monitor;

        s->creategroup.in.domain_handle  = &s->domain_handle;

        s->creategroup.in.name           = talloc_zero(c, struct lsa_String);
        if (composite_nomem(s->creategroup.in.name, c)) return c;

        s->creategroup.in.name->string   = talloc_strdup(c, io->in.groupname);
        if (composite_nomem(s->creategroup.in.name->string, c)) return c;
        
        s->creategroup.in.access_mask    = 0;
        
        s->creategroup.out.group_handle  = &s->group_handle;
        s->creategroup.out.rid           = &s->group_rid;
        
        subreq = dcerpc_samr_CreateDomainGroup_r_send(s, c->event_ctx,
                                                      s->pipe->binding_handle,
                                                      &s->creategroup);
        if (composite_nomem(subreq, c)) return c;

        tevent_req_set_callback(subreq, continue_groupadd_created, c);
        return c;
}


NTSTATUS libnet_rpc_groupadd_recv(struct composite_context *c, TALLOC_CTX *mem_ctx,
                                  struct libnet_rpc_groupadd *io)
{
        NTSTATUS status;
        struct groupadd_state *s;
        
        status = composite_wait(c);
        if (NT_STATUS_IS_OK(status)) {
                s = talloc_get_type(c, struct groupadd_state);
        }

        return status;
}


static void continue_groupadd_created(struct tevent_req *subreq)
{
        struct composite_context *c;
        struct groupadd_state *s;

        c = tevent_req_callback_data(subreq, struct composite_context);
        s = talloc_get_type(c->private_data, struct groupadd_state);

        c->status = dcerpc_samr_CreateDomainGroup_r_recv(subreq, s);
        TALLOC_FREE(subreq);
        if (!composite_is_ok(c)) return;

        c->status = s->creategroup.out.result;
        if (!composite_is_ok(c)) return;
        
        composite_done(c);
}


NTSTATUS libnet_rpc_groupadd(struct dcerpc_pipe *p, TALLOC_CTX *mem_ctx,
                             struct libnet_rpc_groupadd *io)
{
        struct composite_context *c;

        c = libnet_rpc_groupadd_send(p, io, NULL);
        return libnet_rpc_groupadd_recv(c, mem_ctx, io);
}


struct groupdel_state {
        struct dcerpc_pipe             *pipe;
        struct policy_handle           domain_handle;
        struct policy_handle           group_handle;
        struct samr_LookupNames        lookupname;
        struct samr_OpenGroup          opengroup;
        struct samr_DeleteDomainGroup  deletegroup;

        /* information about the progress */
        void (*monitor_fn)(struct monitor_msg *);
};


static void continue_groupdel_name_found(struct tevent_req *subreq);
static void continue_groupdel_group_opened(struct tevent_req *subreq);
static void continue_groupdel_deleted(struct tevent_req *subreq);


struct composite_context* libnet_rpc_groupdel_send(struct dcerpc_pipe *p,
                                                   struct libnet_rpc_groupdel *io,
                                                   void (*monitor)(struct monitor_msg*))
{
        struct composite_context *c;
        struct groupdel_state *s;
        struct tevent_req *subreq;

        /* composite context allocation and setup */
        c = composite_create(p, dcerpc_event_context(p));
        if (c == NULL) return NULL;

        s = talloc_zero(c, struct groupdel_state);
        if (composite_nomem(s, c)) return c;

        c->private_data  = s;

        /* store function parameters in the state structure */
        s->pipe          = p;
        s->domain_handle = io->in.domain_handle;
        s->monitor_fn    = monitor;
        
        /* prepare parameters to send rpc request */
        s->lookupname.in.domain_handle = &io->in.domain_handle;
        s->lookupname.in.num_names     = 1;
        s->lookupname.in.names         = talloc_zero(s, struct lsa_String);
        s->lookupname.in.names->string = io->in.groupname;
        s->lookupname.out.rids         = talloc_zero(s, struct samr_Ids);
        s->lookupname.out.types        = talloc_zero(s, struct samr_Ids);
        if (composite_nomem(s->lookupname.out.rids, c)) return c;
        if (composite_nomem(s->lookupname.out.types, c)) return c;

        /* send the request */
        subreq = dcerpc_samr_LookupNames_r_send(s, c->event_ctx,
                                                p->binding_handle,
                                                &s->lookupname);
        if (composite_nomem(subreq, c)) return c;

        tevent_req_set_callback(subreq, continue_groupdel_name_found, c);
        return c;
}


static void continue_groupdel_name_found(struct tevent_req *subreq)
{
        struct composite_context *c;
        struct groupdel_state *s;

        c = tevent_req_callback_data(subreq, struct composite_context);
        s = talloc_get_type(c->private_data, struct groupdel_state);

        /* receive samr_LookupNames result */
        c->status = dcerpc_samr_LookupNames_r_recv(subreq, s);
        TALLOC_FREE(subreq);
        if (!composite_is_ok(c)) return;

        c->status = s->lookupname.out.result;
        if (!NT_STATUS_IS_OK(c->status)) {
                composite_error(c, c->status);
                return;
        }

        /* what to do when there's no group account to delete
           and what if there's more than one rid resolved */
        if (s->lookupname.out.rids->count != s->lookupname.in.num_names) {
                c->status = NT_STATUS_INVALID_NETWORK_RESPONSE;
                composite_error(c, c->status);
                return;
        }
        if (s->lookupname.out.types->count != s->lookupname.in.num_names) {
                c->status = NT_STATUS_INVALID_NETWORK_RESPONSE;
                composite_error(c, c->status);
                return;
        }

        /* prepare the arguments for rpc call */
        s->opengroup.in.domain_handle = &s->domain_handle;
        s->opengroup.in.rid           = s->lookupname.out.rids->ids[0];
        s->opengroup.in.access_mask   = SEC_FLAG_MAXIMUM_ALLOWED;
        s->opengroup.out.group_handle  = &s->group_handle;

        /* send rpc request */
        subreq = dcerpc_samr_OpenGroup_r_send(s, c->event_ctx,
                                              s->pipe->binding_handle,
                                              &s->opengroup);
        if (composite_nomem(subreq, c)) return;

        tevent_req_set_callback(subreq, continue_groupdel_group_opened, c);
}


static void continue_groupdel_group_opened(struct tevent_req *subreq)
{
        struct composite_context *c;
        struct groupdel_state *s;

        c = tevent_req_callback_data(subreq, struct composite_context);
        s = talloc_get_type(c->private_data, struct groupdel_state);

        /* receive samr_OpenGroup result */
        c->status = dcerpc_samr_OpenGroup_r_recv(subreq, s);
        TALLOC_FREE(subreq);
        if (!composite_is_ok(c)) return;

        c->status = s->opengroup.out.result;
        if (!NT_STATUS_IS_OK(c->status)) {
                composite_error(c, c->status);
                return;
        }
        
        /* prepare the final rpc call arguments */
        s->deletegroup.in.group_handle   = &s->group_handle;
        s->deletegroup.out.group_handle  = &s->group_handle;
        
        /* send rpc request */
        subreq = dcerpc_samr_DeleteDomainGroup_r_send(s, c->event_ctx,
                                                      s->pipe->binding_handle,
                                                      &s->deletegroup);
        if (composite_nomem(subreq, c)) return;

        /* callback handler setup */
        tevent_req_set_callback(subreq, continue_groupdel_deleted, c);
}


static void continue_groupdel_deleted(struct tevent_req *subreq)
{
        struct composite_context *c;
        struct groupdel_state *s;

        c = tevent_req_callback_data(subreq, struct composite_context);
        s = talloc_get_type(c->private_data, struct groupdel_state);

        /* receive samr_DeleteGroup result */
        c->status = dcerpc_samr_DeleteDomainGroup_r_recv(subreq, s);
        TALLOC_FREE(subreq);
        if (!composite_is_ok(c)) return;

        /* return the actual function call status */
        c->status = s->deletegroup.out.result;
        if (!NT_STATUS_IS_OK(c->status)) {
                composite_error(c, c->status);
                return;
        }
        
        composite_done(c);
}


NTSTATUS libnet_rpc_groupdel_recv(struct composite_context *c, TALLOC_CTX *mem_ctx,
                                  struct libnet_rpc_groupdel *io)
{
        NTSTATUS status;
        struct groupdel_state *s;

        status = composite_wait(c);
        if (NT_STATUS_IS_OK(status) && io) {
                s = talloc_get_type(c->private_data, struct groupdel_state);
                io->out.group_handle = s->group_handle;
        }

        talloc_free(c);
        return status;
}


NTSTATUS libnet_rpc_groupdel(struct dcerpc_pipe *p, TALLOC_CTX *mem_ctx,
                             struct libnet_rpc_groupdel *io)
{
        struct composite_context *c;

        c = libnet_rpc_groupdel_send(p, io, NULL);
        return libnet_rpc_groupdel_recv(c, mem_ctx, io);
}