libnet_user.c

来自「samba最新软件」· C语言 代码 · 共 1,198 行 · 第 1/3 页

	const uint16_t level = 21;
	struct composite_context *c;
	struct modify_user_state *s;
	struct composite_context *userinfo_req;
	bool prereq_met = false;

	c = composite_create(mem_ctx, ctx->event_ctx);
	if (c == NULL) return NULL;

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

	c->private_data = s;

	s->ctx = ctx;
	s->r = *r;

	prereq_met = samr_domain_opened(ctx, s->r.in.domain_name, &c, &s->domain_open,
					continue_domain_open_modify, monitor);
	if (!prereq_met) return c;

	s->user_info.in.username      = r->in.user_name;
	s->user_info.in.domain_handle = ctx->samr.handle;
	s->user_info.in.level         = level;

	userinfo_req = libnet_rpc_userinfo_send(ctx->samr.pipe, &s->user_info, monitor);
	if (composite_nomem(userinfo_req, c)) return c;

	composite_continue(c, userinfo_req, continue_rpc_userinfo, c);
	return c;
}


/*
 * Stage 0.5 (optional): receive result of domain open request
 * and send userinfo request
 */
static void continue_domain_open_modify(struct composite_context *ctx)
{
	const uint16_t level = 21;
	struct composite_context *c;
	struct modify_user_state *s;
	struct composite_context *userinfo_req;
	struct monitor_msg msg;

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

	c->status = libnet_DomainOpen_recv(ctx, s->ctx, c, &s->domain_open);
	if (!composite_is_ok(c)) return;

	if (s->monitor_fn) s->monitor_fn(&msg);
	
	s->user_info.in.domain_handle  = s->ctx->samr.handle;
	s->user_info.in.username       = s->r.in.user_name;
	s->user_info.in.level          = level;

	userinfo_req = libnet_rpc_userinfo_send(s->ctx->samr.pipe, &s->user_info, s->monitor_fn);
	if (composite_nomem(userinfo_req, c)) return;
	
	composite_continue(c, userinfo_req, continue_rpc_userinfo, c);
}


/*
 * Stage 1: receive result of userinfo call, prepare user changes
 * (set the fields a caller required to change) and send usermod request
 */
static void continue_rpc_userinfo(struct composite_context *ctx)
{
	struct composite_context *c;
	struct modify_user_state *s;
	struct composite_context *usermod_req;

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

	c->status = libnet_rpc_userinfo_recv(ctx, c, &s->user_info);
	if (!composite_is_ok(c)) return;

	s->user_mod.in.domain_handle = s->ctx->samr.handle;
	s->user_mod.in.username      = s->r.in.user_name;

	c->status = set_user_changes(c, &s->user_mod.in.change, &s->user_info, &s->r);

	usermod_req = libnet_rpc_usermod_send(s->ctx->samr.pipe, &s->user_mod, s->monitor_fn);
	if (composite_nomem(usermod_req, c)) return;

	composite_continue(c, usermod_req, continue_rpc_usermod, c);
}


/*
 * Prepare user changes: compare userinfo result to requested changes and
 * set the field values and flags accordingly for user modify call
 */
static NTSTATUS set_user_changes(TALLOC_CTX *mem_ctx, struct usermod_change *mod,
				 struct libnet_rpc_userinfo *info, struct libnet_ModifyUser *r)
{
	struct samr_UserInfo21 *user;

	if (mod == NULL || info == NULL || r == NULL || info->in.level != 21) {
		return NT_STATUS_INVALID_PARAMETER;
	}

	user = &info->out.info.info21;
	mod->fields = 0;        /* reset flag field before setting individual flags */

	/* account name change */
	SET_FIELD_LSA_STRING(r->in, user, mod, account_name, USERMOD_FIELD_ACCOUNT_NAME);

	/* full name change */
	SET_FIELD_LSA_STRING(r->in, user, mod, full_name, USERMOD_FIELD_FULL_NAME);

	/* description change */
	SET_FIELD_LSA_STRING(r->in, user, mod, description, USERMOD_FIELD_DESCRIPTION);

	/* comment change */
	SET_FIELD_LSA_STRING(r->in, user, mod, comment, USERMOD_FIELD_COMMENT);

	/* home directory change */
	SET_FIELD_LSA_STRING(r->in, user, mod, home_directory, USERMOD_FIELD_HOME_DIRECTORY);

	/* home drive change */
	SET_FIELD_LSA_STRING(r->in, user, mod, home_drive, USERMOD_FIELD_HOME_DRIVE);

	/* logon script change */
	SET_FIELD_LSA_STRING(r->in, user, mod, logon_script, USERMOD_FIELD_LOGON_SCRIPT);

	/* profile path change */
	SET_FIELD_LSA_STRING(r->in, user, mod, profile_path, USERMOD_FIELD_PROFILE_PATH);

	/* account expiry change */
	SET_FIELD_NTTIME(r->in, user, mod, acct_expiry, USERMOD_FIELD_ACCT_EXPIRY);

	/* account flags change */
	SET_FIELD_ACCT_FLAGS(r->in, user, mod, acct_flags, USERMOD_FIELD_ACCT_FLAGS);

	return NT_STATUS_OK;
}


/*
 * Stage 2: receive result of usermod request and finish the composite function
 */
static void continue_rpc_usermod(struct composite_context *ctx)
{
	struct composite_context *c;
	struct modify_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 modify_user_state);
	
	c->status = libnet_rpc_usermod_recv(ctx, c, &s->user_mod);
	if (!composite_is_ok(c)) return;
	
	if (s->monitor_fn) s->monitor_fn(&msg);
	composite_done(c);
}


/**
 * Receive result of ModifyUser 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_ModifyUser_recv(struct composite_context *c, TALLOC_CTX *mem_ctx,
				struct libnet_ModifyUser *r)
{
	NTSTATUS status = composite_wait(c);
	return status;
}


/**
 * Synchronous version of ModifyUser 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_ModifyUser(struct libnet_context *ctx, TALLOC_CTX *mem_ctx,
			   struct libnet_ModifyUser *r)
{
	struct composite_context *c;

	c = libnet_ModifyUser_send(ctx, mem_ctx, r, NULL);
	return libnet_ModifyUser_recv(c, mem_ctx, r);
}


struct user_info_state {
	struct libnet_context *ctx;
	const char *domain_name;
	enum libnet_UserInfo_level level;
	const char *user_name;
	const char *sid_string;
	struct libnet_LookupName lookup;
	struct libnet_DomainOpen domopen;
	struct libnet_rpc_userinfo userinfo;

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


static void continue_name_found(struct composite_context *ctx);
static void continue_domain_open_info(struct composite_context *ctx);
static void continue_info_received(struct composite_context *ctx);


/**
 * Sends request to get user account information
 *
 * @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_UserInfo_send(struct libnet_context *ctx,
					       TALLOC_CTX *mem_ctx,
					       struct libnet_UserInfo *r,
					       void (*monitor)(struct monitor_msg*))
{
	struct composite_context *c;
	struct user_info_state *s;
	struct composite_context *lookup_req, *info_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 user_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, r->in.domain_name);
	s->level = r->in.level;
	switch (s->level) {
	case USER_INFO_BY_NAME:
		s->user_name = talloc_strdup(c, r->in.data.user_name);
		s->sid_string = NULL;
		break;
	case USER_INFO_BY_SID:
		s->user_name = NULL;
		s->sid_string = dom_sid_string(c, r->in.data.user_sid);
		break;
	}

	/* 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;

	switch (s->level) {
	case USER_INFO_BY_NAME:
		/* prepare arguments for LookupName call */
		s->lookup.in.domain_name = s->domain_name;
		s->lookup.in.name        = s->user_name;

		/* send the request */
		lookup_req = libnet_LookupName_send(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);
		break;
	case USER_INFO_BY_SID:
		/* prepare arguments for UserInfo call */
		s->userinfo.in.domain_handle = s->ctx->samr.handle;
		s->userinfo.in.sid = s->sid_string;
		s->userinfo.in.level = 21;

		/* send the request */
		info_req = libnet_rpc_userinfo_send(s->ctx->samr.pipe,
						    &s->userinfo,
						    s->monitor_fn);
		if (composite_nomem(info_req, c)) return c;

		/* set the next stage */
		composite_continue(c, info_req, continue_info_received, c);
		break;
	}

	return c;
}


/*
 * Stage 0.5 (optional): receive result of domain open request
 * and send LookupName request
 */
static void continue_domain_open_info(struct composite_context *ctx)
{
	struct composite_context *c;
	struct user_info_state *s;
	struct composite_context *lookup_req, *info_req;
	struct monitor_msg msg;

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

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

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

	switch (s->level) {
	case USER_INFO_BY_NAME:
		/* prepare arguments for LookupName call */
		s->lookup.in.domain_name = s->domain_name;
		s->lookup.in.name        = s->user_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);
		break;

	case USER_INFO_BY_SID:
		/* prepare arguments for UserInfo call */
		s->userinfo.in.domain_handle = s->ctx->samr.handle;
		s->userinfo.in.sid = s->sid_string;
		s->userinfo.in.level = 21;

		/* send the request */
		info_req = libnet_rpc_userinfo_send(s->ctx->samr.pipe,
						    &s->userinfo,
						    s->monitor_fn);
		if (composite_nomem(info_req, c)) return;

		/* set the next stage */
		composite_continue(c, info_req, continue_info_received, c);
		break;
	}
}


/*
 * Stage 1: receive the name (if found) and send userinfo request
 */
static void continue_name_found(struct composite_context *ctx)
{
	struct composite_context *c;
	struct user_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 user_info_state);

	/* receive result of LookupName call */
	c->status = libnet_LookupName_recv(ctx, c, &s->lookup);
	if (!composite_is_ok(c)) return;

	/* we're only interested in user accounts this time */
	if (s->lookup.out.sid_type != SID_NAME_USER) {
		composite_error(c, NT_STATUS_NO_SUCH_USER);
		return;
	}

	/* prepare arguments for UserInfo call */
	s->userinfo.in.domain_handle = s->ctx->samr.handle;
	s->userinfo.in.sid = s->lookup.out.sidstr;
	s->userinfo.in.level = 21;

	/* send the request */
	info_req = libnet_rpc_userinfo_send(s->ctx->samr.pipe, &s->userinfo, s->monitor_fn);
	if (composite_nomem(info_req, c)) return;

	/* set the next stage */
	composite_continue(c, info_req, continue_info_received, c);
}


/*
 * Stage 2: receive user account information and finish the composite function
 */
static void continue_info_received(struct composite_context *ctx)
{
	struct composite_context *c;
	struct user_info_state *s;

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