libnet_user.c

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/* 
   Unix SMB/CIFS implementation.
   
   Copyright (C) Rafal Szczesniak  2005
   
   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 "auth/credentials/credentials.h"
#include "librpc/ndr/libndr.h"
#include "librpc/gen_ndr/samr.h"
#include "librpc/gen_ndr/ndr_samr_c.h"
#include "librpc/gen_ndr/lsa.h"
#include "librpc/gen_ndr/ndr_lsa_c.h"
#include "libcli/security/security.h"


struct create_user_state {
	struct libnet_CreateUser r;
	struct libnet_DomainOpen domain_open;
	struct libnet_rpc_useradd user_add;
	struct libnet_context *ctx;

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


static void continue_rpc_useradd(struct composite_context *ctx);
static void continue_domain_open_create(struct composite_context *ctx);


/**
 * Sends request to create user account
 *
 * @param ctx initialised libnet context
 * @param mem_ctx memory context of this call
 * @param r pointer to a structure containing arguments and results of this call
 * @param monitor function pointer for receiving monitor messages
 * @return compostite context of this request
 */
struct composite_context* libnet_CreateUser_send(struct libnet_context *ctx,
						 TALLOC_CTX *mem_ctx,
						 struct libnet_CreateUser *r,
						 void (*monitor)(struct monitor_msg*))
{
	struct composite_context *c;
	struct create_user_state *s;
	struct composite_context *create_req;
	bool prereq_met = false;

	/* composite context allocation and setup */
	c = composite_create(mem_ctx, ctx->event_ctx);
	if (c == NULL) return NULL;

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

	c->private_data = s;

	/* store arguments in the state structure */
	s->ctx = ctx;
	s->r   = *r;
	ZERO_STRUCT(s->r.out);

	/* prerequisite: make sure the domain is opened */
	prereq_met = samr_domain_opened(ctx, s->r.in.domain_name, &c, &s->domain_open,
					continue_domain_open_create, monitor);
	if (!prereq_met) return c;

	/* prepare arguments for useradd call */
	s->user_add.in.username       = r->in.user_name;
	s->user_add.in.domain_handle  = ctx->samr.handle;

	/* send the request */
	create_req = libnet_rpc_useradd_send(ctx->samr.pipe, &s->user_add, monitor);
	if (composite_nomem(create_req, c)) return c;

	/* set the next stage */
	composite_continue(c, create_req, continue_rpc_useradd, c);
	return c;
}


/*
 * Stage 0.5 (optional): receive result of domain open request
 * and send useradd request
 */
static void continue_domain_open_create(struct composite_context *ctx)
{
	struct composite_context *c;
	struct create_user_state *s;
	struct composite_context *create_req;
	struct monitor_msg msg;

	c = talloc_get_type(ctx->async.private_data, struct composite_context);
	s = talloc_get_type(c->private_data, struct create_user_state);

	/* receive result of DomainOpen call */
	c->status = libnet_DomainOpen_recv(ctx, s->ctx, c, &s->domain_open);
	if (!composite_is_ok(c)) return;

	/* send monitor message */
	if (s->monitor_fn) s->monitor_fn(&msg);
	
	/* prepare arguments for useradd call */
	s->user_add.in.username       = s->r.in.user_name;
	s->user_add.in.domain_handle  = s->ctx->samr.handle;

	/* send the request */
	create_req = libnet_rpc_useradd_send(s->ctx->samr.pipe, &s->user_add, s->monitor_fn);
	if (composite_nomem(create_req, c)) return;

	/* set the next stage */
	composite_continue(c, create_req, continue_rpc_useradd, c);
}


/*
 * Stage 1: receive result of useradd call
 */
static void continue_rpc_useradd(struct composite_context *ctx)
{
	struct composite_context *c;
	struct create_user_state *s;
	struct monitor_msg msg;

	c = talloc_get_type(ctx->async.private_data, struct composite_context);
	s = talloc_get_type(c->private_data, struct create_user_state);
	
	/* receive result of the call */
	c->status = libnet_rpc_useradd_recv(ctx, c, &s->user_add);
	if (!composite_is_ok(c)) return;

	/* send monitor message */
	if (s->monitor_fn) s->monitor_fn(&msg);

	/* we're done */
	composite_done(c);
}


/**
 * Receive result of CreateUser call
 *
 * @param c composite context returned by send request routine
 * @param mem_ctx memory context of this call
 * @param r pointer to a structure containing arguments and result of this call
 * @return nt status
 */
NTSTATUS libnet_CreateUser_recv(struct composite_context *c, TALLOC_CTX *mem_ctx,
				struct libnet_CreateUser *r)
{
	NTSTATUS status;
	struct create_user_state *s;

	r->out.error_string = NULL;

	/* wait for result of async request and check status code */
	status = composite_wait(c);
	if (!NT_STATUS_IS_OK(status)) {
		s = talloc_get_type(c->private_data, struct create_user_state);
		r->out.error_string = talloc_strdup(mem_ctx, nt_errstr(status));
	}

	return status;
}


/**
 * Synchronous version of CreateUser call
 *
 * @param ctx initialised libnet context
 * @param mem_ctx memory context of this call
 * @param r pointer to a structure containing arguments and result of this call
 * @return nt status
 */
NTSTATUS libnet_CreateUser(struct libnet_context *ctx, TALLOC_CTX *mem_ctx,
			   struct libnet_CreateUser *r)
{
	struct composite_context *c;

	c = libnet_CreateUser_send(ctx, mem_ctx, r, NULL);
	return libnet_CreateUser_recv(c, mem_ctx, r);
}


struct delete_user_state {
	struct libnet_DeleteUser r;
	struct libnet_context *ctx;
	struct libnet_DomainOpen domain_open;
	struct libnet_rpc_userdel user_del;

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


static void continue_rpc_userdel(struct composite_context *ctx);
static void continue_domain_open_delete(struct composite_context *ctx);


/**
 * Sends request to delete user account
 *
 * @param ctx initialised libnet context
 * @param mem_ctx memory context of this call
 * @param r pointer to structure containing arguments and result of this call
 * @param monitor function pointer for receiving monitor messages
 */
struct composite_context *libnet_DeleteUser_send(struct libnet_context *ctx,
						 TALLOC_CTX *mem_ctx,
						 struct libnet_DeleteUser *r,
						 void (*monitor)(struct monitor_msg*))
{
	struct composite_context *c;
	struct delete_user_state *s;
	struct composite_context *delete_req;
	bool prereq_met = false;

	/* composite context allocation and setup */
	c = composite_create(mem_ctx, ctx->event_ctx);
	if (c == NULL) return NULL;

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

	c->private_data = s;

	/* store arguments in state structure */
	s->ctx = ctx;
	s->r   = *r;
	ZERO_STRUCT(s->r.out);
	
	/* prerequisite: make sure the domain is opened before proceeding */
	prereq_met = samr_domain_opened(ctx, s->r.in.domain_name, &c, &s->domain_open,
					continue_domain_open_delete, monitor);
	if (!prereq_met) return c;

	/* prepare arguments for userdel call */
	s->user_del.in.username       = r->in.user_name;
	s->user_del.in.domain_handle  = ctx->samr.handle;

	/* send request */
	delete_req = libnet_rpc_userdel_send(ctx->samr.pipe, &s->user_del, monitor);
	if (composite_nomem(delete_req, c)) return c;
	
	/* set the next stage */
	composite_continue(c, delete_req, continue_rpc_userdel, c);
	return c;
}


/*
 * Stage 0.5 (optional): receive result of domain open request
 * and send useradd request
 */
static void continue_domain_open_delete(struct composite_context *ctx)
{
	struct composite_context *c;
	struct delete_user_state *s;
	struct composite_context *delete_req;
	struct monitor_msg msg;

	c = talloc_get_type(ctx->async.private_data, struct composite_context);
	s = talloc_get_type(c->private_data, struct delete_user_state);

	/* receive result of DomainOpen call */
	c->status = libnet_DomainOpen_recv(ctx, s->ctx, c, &s->domain_open);
	if (!composite_is_ok(c)) return;
	
	/* send monitor message */
	if (s->monitor_fn) s->monitor_fn(&msg);

	/* prepare arguments for userdel call */
	s->user_del.in.username       = s->r.in.user_name;
	s->user_del.in.domain_handle  = s->ctx->samr.handle;

	/* send request */
	delete_req = libnet_rpc_userdel_send(s->ctx->samr.pipe, &s->user_del, s->monitor_fn);
	if (composite_nomem(delete_req, c)) return;

	/* set the next stage */
	composite_continue(c, delete_req, continue_rpc_userdel, c);
}


/*
 * Stage 1: receive result of userdel call and finish the composite function
 */
static void continue_rpc_userdel(struct composite_context *ctx)
{
	struct composite_context *c;
	struct delete_user_state *s;
	struct monitor_msg msg;

	c = talloc_get_type(ctx->async.private_data, struct composite_context);
	s = talloc_get_type(c->private_data, struct delete_user_state);

	/* receive result of userdel call */
	c->status = libnet_rpc_userdel_recv(ctx, c, &s->user_del);
	if (!composite_is_ok(c)) return;

	/* send monitor message */
	if (s->monitor_fn) s->monitor_fn(&msg);

	/* we're done */
	composite_done(c);
}


/**
 * Receives result of asynchronous DeleteUser call
 *
 * @param c composite context returned by async DeleteUser call
 * @param mem_ctx memory context of this call
 * @param r pointer to structure containing arguments and result
 */
NTSTATUS libnet_DeleteUser_recv(struct composite_context *c, TALLOC_CTX *mem_ctx,
				struct libnet_DeleteUser *r)
{
	NTSTATUS status;
	struct delete_user_state *s;

	r->out.error_string = NULL;

	/* wait for result of async request and check status code */
	status = composite_wait(c);
	if (!NT_STATUS_IS_OK(status)) {
		s = talloc_get_type(c->private_data, struct delete_user_state);
		r->out.error_string = talloc_steal(mem_ctx, s->r.out.error_string);
	}
	
	return status;
}


/**
 * Synchronous version of DeleteUser call
 *
 * @param ctx initialised libnet context
 * @param mem_ctx memory context of this call
 * @param r pointer to structure containing arguments and result
 */
NTSTATUS libnet_DeleteUser(struct libnet_context *ctx, TALLOC_CTX *mem_ctx,
			   struct libnet_DeleteUser *r)
{
	struct composite_context *c;
	
	c = libnet_DeleteUser_send(ctx, mem_ctx, r, NULL);
	return libnet_DeleteUser_recv(c, mem_ctx, r);
}


struct modify_user_state {
	struct libnet_ModifyUser r;
	struct libnet_context *ctx;
	struct libnet_DomainOpen domain_open;
	struct libnet_rpc_userinfo user_info;
	struct libnet_rpc_usermod user_mod;

	void (*monitor_fn)(struct monitor_msg *);
};


static void continue_rpc_usermod(struct composite_context *ctx);
static void continue_domain_open_modify(struct composite_context *ctx);
static NTSTATUS set_user_changes(TALLOC_CTX *mem_ctx, struct usermod_change *mod,
				 struct libnet_rpc_userinfo *info, struct libnet_ModifyUser *r);
static void continue_rpc_userinfo(struct composite_context *ctx);


/**
 * Sends request to modify user account
 *
 * @param ctx initialised libnet context
 * @param mem_ctx memory context of this call
 * @param r pointer to structure containing arguments and result of this call
 * @param monitor function pointer for receiving monitor messages
 */
struct composite_context *libnet_ModifyUser_send(struct libnet_context *ctx,
						 TALLOC_CTX *mem_ctx,
						 struct libnet_ModifyUser *r,
						 void (*monitor)(struct monitor_msg*))
{