mirror of
https://github.com/samba-team/samba.git
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89e4387a08
from user modify routines.
rafal
(This used to be commit 7ca0d3dbcb
)
369 lines
9.8 KiB
C
369 lines
9.8 KiB
C
/*
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Unix SMB/CIFS implementation.
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Copyright (C) Rafal Szczesniak 2005
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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/*
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a composite function for getting user information via samr pipe
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*/
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#include "includes.h"
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#include "libcli/composite/composite.h"
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#include "libnet/composite.h"
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#include "librpc/gen_ndr/security.h"
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#include "libcli/security/security.h"
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#include "libnet/userman.h"
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#include "libnet/userinfo.h"
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#include "librpc/gen_ndr/ndr_samr_c.h"
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static void userinfo_handler(struct rpc_request *req);
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enum userinfo_stage { USERINFO_LOOKUP, USERINFO_OPENUSER, USERINFO_GETUSER, USERINFO_CLOSEUSER };
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struct userinfo_state {
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enum userinfo_stage stage;
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struct dcerpc_pipe *pipe;
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struct rpc_request *req;
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struct policy_handle domain_handle;
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struct policy_handle user_handle;
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uint16_t level;
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struct samr_LookupNames lookup;
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struct samr_OpenUser openuser;
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struct samr_QueryUserInfo queryuserinfo;
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struct samr_Close samrclose;
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union samr_UserInfo *info;
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/* information about the progress */
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void (*monitor_fn)(struct monitor_msg *);
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};
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/**
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* Stage 1 (optional): Look for a username in SAM server.
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*/
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static NTSTATUS userinfo_lookup(struct composite_context *c,
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struct userinfo_state *s)
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{
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/* receive samr_Lookup reply */
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c->status = dcerpc_ndr_request_recv(s->req);
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NT_STATUS_NOT_OK_RETURN(c->status);
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/* there could be a problem with name resolving itself */
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NT_STATUS_NOT_OK_RETURN(s->lookup.out.result);
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/* have we actually got name resolved
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- we're looking for only one at the moment */
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if (s->lookup.out.rids.count == 0) {
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return NT_STATUS_NO_SUCH_USER;
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}
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/* TODO: find proper status code for more than one rid found */
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/* prepare parameters for LookupNames */
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s->openuser.in.domain_handle = &s->domain_handle;
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s->openuser.in.access_mask = SEC_FLAG_MAXIMUM_ALLOWED;
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s->openuser.in.rid = s->lookup.out.rids.ids[0];
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s->openuser.out.user_handle = &s->user_handle;
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/* send request */
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s->req = dcerpc_samr_OpenUser_send(s->pipe, c, &s->openuser);
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if (s->req == NULL) goto failure;
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s->req->async.callback = userinfo_handler;
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s->req->async.private = c;
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s->stage = USERINFO_OPENUSER;
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return NT_STATUS_OK;
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failure:
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return NT_STATUS_UNSUCCESSFUL;
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}
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/**
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* Stage 2: Open user policy handle.
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*/
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static NTSTATUS userinfo_openuser(struct composite_context *c,
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struct userinfo_state *s)
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{
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/* receive samr_OpenUser reply */
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c->status = dcerpc_ndr_request_recv(s->req);
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NT_STATUS_NOT_OK_RETURN(c->status);
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/* prepare parameters for QueryUserInfo call */
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s->queryuserinfo.in.user_handle = &s->user_handle;
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s->queryuserinfo.in.level = s->level;
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/* queue rpc call, set event handling and new state */
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s->req = dcerpc_samr_QueryUserInfo_send(s->pipe, c, &s->queryuserinfo);
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if (s->req == NULL) goto failure;
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s->req->async.callback = userinfo_handler;
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s->req->async.private = c;
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s->stage = USERINFO_GETUSER;
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return NT_STATUS_OK;
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failure:
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return NT_STATUS_UNSUCCESSFUL;
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}
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/**
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* Stage 3: Get requested user information.
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*/
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static NTSTATUS userinfo_getuser(struct composite_context *c,
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struct userinfo_state *s)
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{
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/* receive samr_QueryUserInfo reply */
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c->status = dcerpc_ndr_request_recv(s->req);
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NT_STATUS_NOT_OK_RETURN(c->status);
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/* check if queryuser itself went ok */
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NT_STATUS_NOT_OK_RETURN(s->queryuserinfo.out.result);
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s->info = talloc_steal(s, s->queryuserinfo.out.info);
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/* prepare arguments for Close call */
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s->samrclose.in.handle = &s->user_handle;
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s->samrclose.out.handle = &s->user_handle;
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/* queue rpc call, set event handling and new state */
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s->req = dcerpc_samr_Close_send(s->pipe, c, &s->samrclose);
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s->req->async.callback = userinfo_handler;
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s->req->async.private = c;
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s->stage = USERINFO_CLOSEUSER;
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return NT_STATUS_OK;
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}
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/**
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* Stage 4: Close policy handle associated with opened user.
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*/
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static NTSTATUS userinfo_closeuser(struct composite_context *c,
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struct userinfo_state *s)
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{
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/* receive samr_Close reply */
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c->status = dcerpc_ndr_request_recv(s->req);
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NT_STATUS_NOT_OK_RETURN(c->status);
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c->state = COMPOSITE_STATE_DONE;
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return NT_STATUS_OK;
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}
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/**
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* Event handler for asynchronous request. Handles transition through
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* intermediate stages of the call.
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*
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* @param req rpc call context
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*/
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static void userinfo_handler(struct rpc_request *req)
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{
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struct composite_context *c = req->async.private;
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struct userinfo_state *s = talloc_get_type(c->private_data, struct userinfo_state);
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struct monitor_msg msg;
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struct msg_rpc_lookup_name *msg_lookup;
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struct msg_rpc_open_user *msg_open;
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struct msg_rpc_query_user *msg_query;
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struct msg_rpc_close_user *msg_close;
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/* Stages of the call */
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switch (s->stage) {
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case USERINFO_LOOKUP:
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c->status = userinfo_lookup(c, s);
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msg.type = rpc_lookup_name;
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msg_lookup = talloc(s, struct msg_rpc_lookup_name);
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msg_lookup->rid = s->lookup.out.rids.ids;
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msg_lookup->count = s->lookup.out.rids.count;
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msg.data = (void*)msg_lookup;
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msg.data_size = sizeof(*msg_lookup);
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break;
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case USERINFO_OPENUSER:
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c->status = userinfo_openuser(c, s);
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msg.type = rpc_open_user;
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msg_open = talloc(s, struct msg_rpc_open_user);
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msg_open->rid = s->openuser.in.rid;
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msg_open->access_mask = s->openuser.in.access_mask;
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msg.data = (void*)msg_open;
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msg.data_size = sizeof(*msg_open);
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break;
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case USERINFO_GETUSER:
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c->status = userinfo_getuser(c, s);
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msg.type = rpc_query_user;
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msg_query = talloc(s, struct msg_rpc_query_user);
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msg_query->level = s->queryuserinfo.in.level;
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msg.data = (void*)msg_query;
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msg.data_size = sizeof(*msg_query);
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break;
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case USERINFO_CLOSEUSER:
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c->status = userinfo_closeuser(c, s);
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msg.type = rpc_close_user;
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msg_close = talloc(s, struct msg_rpc_close_user);
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msg_close->rid = s->openuser.in.rid;
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msg.data = (void*)msg_close;
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msg.data_size = sizeof(*msg_close);
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break;
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}
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if (!NT_STATUS_IS_OK(c->status)) {
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c->state = COMPOSITE_STATE_ERROR;
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}
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if (s->monitor_fn) {
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s->monitor_fn(&msg);
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}
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if (c->state >= COMPOSITE_STATE_DONE &&
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c->async.fn) {
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c->async.fn(c);
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}
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}
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/**
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* Sends asynchronous userinfo request
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*
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* @param p dce/rpc call pipe
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* @param io arguments and results of the call
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*/
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struct composite_context *libnet_rpc_userinfo_send(struct dcerpc_pipe *p,
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struct libnet_rpc_userinfo *io,
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void (*monitor)(struct monitor_msg*))
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{
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struct composite_context *c;
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struct userinfo_state *s;
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struct dom_sid *sid;
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if (!p || !io) return NULL;
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c = talloc_zero(p, struct composite_context);
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if (c == NULL) goto failure;
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s = talloc_zero(c, struct userinfo_state);
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if (s == NULL) goto failure;
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s->level = io->in.level;
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s->pipe = p;
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s->domain_handle = io->in.domain_handle;
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s->monitor_fn = monitor;
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c->state = COMPOSITE_STATE_IN_PROGRESS;
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c->private_data = s;
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c->event_ctx = dcerpc_event_context(p);
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if (io->in.sid) {
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sid = dom_sid_parse_talloc(s, io->in.sid);
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if (sid == NULL) goto failure;
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s->openuser.in.domain_handle = &s->domain_handle;
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s->openuser.in.access_mask = SEC_FLAG_MAXIMUM_ALLOWED;
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s->openuser.in.rid = sid->sub_auths[sid->num_auths - 1];
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s->openuser.out.user_handle = &s->user_handle;
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/* send request */
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s->req = dcerpc_samr_OpenUser_send(p, c, &s->openuser);
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if (s->req == NULL) goto failure;
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s->stage = USERINFO_OPENUSER;
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} else {
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/* preparing parameters to send rpc request */
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s->lookup.in.domain_handle = &s->domain_handle;
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s->lookup.in.num_names = 1;
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s->lookup.in.names = talloc_array(s, struct lsa_String, 1);
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if (composite_nomem(s->lookup.in.names, c)) return c;
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s->lookup.in.names[0].string = talloc_strdup(s, io->in.username);
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/* send request */
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s->req = dcerpc_samr_LookupNames_send(p, c, &s->lookup);
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if (s->req == NULL) goto failure;
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s->stage = USERINFO_LOOKUP;
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}
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/* callback handler */
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s->req->async.callback = userinfo_handler;
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s->req->async.private = c;
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return c;
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failure:
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talloc_free(c);
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return NULL;
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}
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/**
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* Waits for and receives result of asynchronous userinfo call
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*
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* @param c composite context returned by asynchronous userinfo call
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* @param mem_ctx memory context of the call
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* @param io pointer to results (and arguments) of the call
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* @return nt status code of execution
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*/
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NTSTATUS libnet_rpc_userinfo_recv(struct composite_context *c, TALLOC_CTX *mem_ctx,
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struct libnet_rpc_userinfo *io)
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{
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NTSTATUS status;
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struct userinfo_state *s;
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/* wait for results of sending request */
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status = composite_wait(c);
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if (NT_STATUS_IS_OK(status) && io) {
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s = talloc_get_type(c->private_data, struct userinfo_state);
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talloc_steal(mem_ctx, s->info);
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io->out.info = *s->info;
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}
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/* memory context associated to composite context is no longer needed */
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talloc_free(c);
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return status;
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}
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/**
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* Synchronous version of userinfo call
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*
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* @param pipe dce/rpc call pipe
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* @param mem_ctx memory context for the call
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* @param io arguments and results of the call
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* @return nt status code of execution
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*/
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NTSTATUS libnet_rpc_userinfo(struct dcerpc_pipe *p,
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TALLOC_CTX *mem_ctx,
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struct libnet_rpc_userinfo *io)
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{
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struct composite_context *c = libnet_rpc_userinfo_send(p, io, NULL);
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return libnet_rpc_userinfo_recv(c, mem_ctx, io);
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}
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