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/*
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/>.
*/
#include "includes.h"
#include "libnet/libnet.h"
#include "libcli/composite/composite.h"
#include "librpc/gen_ndr/lsa.h"
struct group_info_state {
struct libnet_context *ctx;
const char *domain_name;
const char *group_name;
struct libnet_LookupName lookup;
struct libnet_DomainOpen domopen;
struct libnet_rpc_groupinfo info;
/* information about the progress */
void (*monitor_fn)(struct monitor_msg *);
};
static void continue_domain_open_info(struct composite_context *ctx);
static void continue_name_found(struct composite_context *ctx);
static void continue_group_info(struct composite_context *ctx);
/**
* Sends request to get group information
*
* @param ctx initialised libnet context
* @param mem_ctx memory context of this call
* @param io pointer to structure containing arguments the call
* @param monitor function pointer for receiving monitor messages
* @return composite context of this request
*/
struct composite_context* libnet_GroupInfo_send(struct libnet_context *ctx,
TALLOC_CTX *mem_ctx,
struct libnet_GroupInfo *io,
void (*monitor)(struct monitor_msg*))
{
struct composite_context *c;
struct group_info_state *s;
BOOL prereq_met = False;
struct composite_context *lookup_req;
/* composite context allocation and setup */
c = composite_create(mem_ctx, ctx->event_ctx);
if (c == NULL) return NULL;
s = talloc_zero(c, struct group_info_state);
if (composite_nomem(s, c)) return c;
c->private_data = s;
/* store arguments in the state structure */
s->monitor_fn = monitor;
s->ctx = ctx;
s->domain_name = talloc_strdup(c, io->in.domain_name);
s->group_name = talloc_strdup(c, io->in.group_name);
/* prerequisite: make sure the domain is opened */
prereq_met = samr_domain_opened(ctx, s->domain_name, &c, &s->domopen,
continue_domain_open_info, monitor);
if (!prereq_met) return c;
/* prepare arguments for LookupName call */
s->lookup.in.name = s->group_name;
s->lookup.in.domain_name = s->domain_name;
/* send the request */
lookup_req = libnet_LookupName_send(s->ctx, c, &s->lookup, s->monitor_fn);
if (composite_nomem(lookup_req, c)) return c;
/* set the next stage */
composite_continue(c, lookup_req, continue_name_found, c);
return c;
}
/*
* Stage 0.5 (optional): receive opened domain and send lookup name request
*/
static void continue_domain_open_info(struct composite_context *ctx)
{
struct composite_context *c;
struct group_info_state *s;
struct composite_context *lookup_req;
c = talloc_get_type(ctx->async.private_data, struct composite_context);
s = talloc_get_type(c->private_data, struct group_info_state);
/* receive domain handle */
c->status = libnet_DomainOpen_recv(ctx, s->ctx, c, &s->domopen);
if (!composite_is_ok(c)) return;
/* prepare arguments for LookupName call */
s->lookup.in.name = s->group_name;
s->lookup.in.domain_name = s->domain_name;
/* send the request */
lookup_req = libnet_LookupName_send(s->ctx, c, &s->lookup, s->monitor_fn);
if (composite_nomem(lookup_req, c)) return;
/* set the next stage */
composite_continue(c, lookup_req, continue_name_found, c);
}
/*
* Stage 1: Receive SID found and send request for group info
*/
static void continue_name_found(struct composite_context *ctx)
{
struct composite_context *c;
struct group_info_state *s;
struct composite_context *info_req;
c = talloc_get_type(ctx->async.private_data, struct composite_context);
s = talloc_get_type(c->private_data, struct group_info_state);
/* receive SID assiociated with name found */
c->status = libnet_LookupName_recv(ctx, c, &s->lookup);
if (!composite_is_ok(c)) return;
/* Is is a group SID actually ? */
if (s->lookup.out.sid_type != SID_NAME_DOM_GRP &&
s->lookup.out.sid_type != SID_NAME_ALIAS) {
composite_error(c, NT_STATUS_NO_SUCH_GROUP);
}
/* prepare arguments for groupinfo call */
s->info.in.domain_handle = s->ctx->samr.handle;
s->info.in.groupname = s->group_name;
s->info.in.sid = s->lookup.out.sidstr;
/* we're looking for all information available */
s->info.in.level = GROUPINFOALL;
/* send the request */
info_req = libnet_rpc_groupinfo_send(s->ctx->samr.pipe, &s->info, s->monitor_fn);
if (composite_nomem(info_req, c)) return;
/* set the next stage */
composite_continue(c, info_req, continue_group_info, c);
}
/*
* Stage 2: Receive group information
*/
static void continue_group_info(struct composite_context *ctx)
{
struct composite_context *c;
struct group_info_state *s;
c = talloc_get_type(ctx->async.private_data, struct composite_context);
s = talloc_get_type(c->private_data, struct group_info_state);
/* receive group information */
c->status = libnet_rpc_groupinfo_recv(ctx, c, &s->info);
if (!composite_is_ok(c)) return;
/* we're done */
composite_done(c);
}
/*
* Receive group information
*
* @param c composite context returned by libnet_GroupInfo_send
* @param mem_ctx memory context of this call
* @param io pointer to a structure receiving results of the call
* @result nt status
*/
NTSTATUS libnet_GroupInfo_recv(struct composite_context* c, TALLOC_CTX *mem_ctx,
struct libnet_GroupInfo *io)
{
NTSTATUS status;
struct group_info_state *s;
status = composite_wait(c);
if (NT_STATUS_IS_OK(status)) {
/* put the results into io structure if everything went fine */
s = talloc_get_type(c->private_data, struct group_info_state);
io->out.group_sid = talloc_steal(mem_ctx, s->lookup.out.sid);
io->out.num_members = s->info.out.info.all.num_members;
io->out.description = talloc_steal(mem_ctx, s->info.out.info.all.description.string);
io->out.error_string = talloc_strdup(mem_ctx, "Success");
} else {
io->out.error_string = talloc_asprintf(mem_ctx, "Error: %s", nt_errstr(status));
}
talloc_free(c);
return status;
}
/**
* Obtains specified group information
*
* @param ctx initialised libnet context
* @param mem_ctx memory context of the call
* @param io pointer to a structure containing arguments and results of the call
*/
NTSTATUS libnet_GroupInfo(struct libnet_context *ctx, TALLOC_CTX *mem_ctx,
struct libnet_GroupInfo *io)
{
struct composite_context *c = libnet_GroupInfo_send(ctx, mem_ctx,
io, NULL);
return libnet_GroupInfo_recv(c, mem_ctx, io);
}
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