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Viewing changes to source4/winbind/wb_sid2domain.c

  • Committer: Chuck Short
  • Date: 2010-09-28 20:38:39 UTC
  • Revision ID: zulcss@ubuntu.com-20100928203839-pgjulytsi9ue63x1
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source4/winbind/wb_sid2domain.c
 
1
/* 
 
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   Unix SMB/CIFS implementation.
 
3
 
 
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   Find and init a domain struct for a SID
 
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   Copyright (C) Volker Lendecke 2005
 
7
   
 
8
   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 3 of the License, or
 
11
   (at your option) any later version.
 
12
   
 
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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
 
16
   GNU General Public License for more details.
 
17
   
 
18
   You should have received a copy of the GNU General Public License
 
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   along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
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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 "winbind/wb_server.h"
 
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#include "smbd/service_task.h"
 
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#include "winbind/wb_async_helpers.h"
 
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#include "libcli/security/security.h"
 
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#include "../lib/util/dlinklist.h"
 
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#include "param/param.h"
 
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static struct wbsrv_domain *find_domain_from_sid(struct wbsrv_service *service,
 
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                                                 const struct dom_sid *sid)
 
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{
 
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        struct wbsrv_domain *domain;
 
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        for (domain = service->domains; domain!=NULL; domain = domain->next) {
 
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                if (dom_sid_equal(domain->info->sid, sid)) {
 
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                        break;
 
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                }
 
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                if (dom_sid_in_domain(domain->info->sid, sid)) {
 
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                        break;
 
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                }
 
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        }
 
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        return domain;
 
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}
 
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struct sid2domain_state {
 
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        struct composite_context *ctx;
 
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        struct wbsrv_service *service;
 
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        struct dom_sid *sid;
 
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        struct wbsrv_domain *domain;
 
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};
 
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static void sid2domain_recv_dom_info(struct composite_context *ctx);
 
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static void sid2domain_recv_name(struct composite_context *ctx);
 
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static void sid2domain_recv_trusted_dom_info(struct composite_context *ctx);
 
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static void sid2domain_recv_init(struct composite_context *ctx);
 
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struct composite_context *wb_sid2domain_send(TALLOC_CTX *mem_ctx,
 
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                                             struct wbsrv_service *service,
 
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                                             const struct dom_sid *sid)
 
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{
 
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        struct composite_context *result, *ctx;
 
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        struct sid2domain_state *state;
 
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        result = composite_create(mem_ctx, service->task->event_ctx);
 
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        if (result == NULL) goto failed;
 
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        state = talloc(result, struct sid2domain_state);
 
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        if (state == NULL) goto failed;
 
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        state->ctx = result;
 
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        result->private_data = state;
 
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        state->service = service;
 
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        state->sid = dom_sid_dup(state, sid);
 
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        if (state->sid == NULL) goto failed;
 
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        state->domain = find_domain_from_sid(service, sid);
 
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        if (state->domain != NULL) {
 
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                result->status = NT_STATUS_OK;
 
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                composite_done(result);
 
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                return result;
 
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        }
 
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        if (dom_sid_equal(service->primary_sid, sid) ||
 
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            dom_sid_in_domain(service->primary_sid, sid)) {
 
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                ctx = wb_get_dom_info_send(state, service, lp_workgroup(service->task->lp_ctx),
 
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                                           service->primary_sid);
 
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                if (ctx == NULL) goto failed;
 
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                ctx->async.fn = sid2domain_recv_dom_info;
 
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                ctx->async.private_data = state;
 
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                return result;
 
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        }
 
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        ctx = wb_cmd_lookupsid_send(state, service, state->sid);
 
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        if (ctx == NULL) goto failed;
 
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        composite_continue(result, ctx, sid2domain_recv_name, state);
 
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        return result;
 
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 failed:
 
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        talloc_free(result);
 
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        return NULL;
 
105
 
 
106
}
 
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static void sid2domain_recv_dom_info(struct composite_context *ctx)
 
109
{
 
110
        struct sid2domain_state *state =
 
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                talloc_get_type(ctx->async.private_data,
 
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                                struct sid2domain_state);
 
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        struct wb_dom_info *info;
 
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        state->ctx->status = wb_get_dom_info_recv(ctx, state, &info);
 
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        if (!composite_is_ok(state->ctx)) return;
 
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        ctx = wb_init_domain_send(state, state->service, info);
 
119
 
 
120
        composite_continue(state->ctx, ctx, sid2domain_recv_init, state);
 
121
}
 
122
 
 
123
static void sid2domain_recv_name(struct composite_context *ctx)
 
124
{
 
125
        struct sid2domain_state *state =
 
126
                talloc_get_type(ctx->async.private_data,
 
127
                                struct sid2domain_state);
 
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        struct wb_sid_object *name;
 
129
 
 
130
        state->ctx->status = wb_cmd_lookupsid_recv(ctx, state, &name);
 
131
        if (!composite_is_ok(state->ctx)) return;
 
132
 
 
133
        if (name->type == SID_NAME_UNKNOWN) {
 
134
                composite_error(state->ctx, NT_STATUS_NO_SUCH_DOMAIN);
 
135
                return;
 
136
        }
 
137
 
 
138
        if (name->type != SID_NAME_DOMAIN) {
 
139
                state->sid->num_auths -= 1;
 
140
        }
 
141
 
 
142
        ctx = wb_trusted_dom_info_send(state, state->service, name->domain,
 
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                                       state->sid);
 
144
 
 
145
        composite_continue(state->ctx, ctx, sid2domain_recv_trusted_dom_info,
 
146
                           state);
 
147
}
 
148
 
 
149
static void sid2domain_recv_trusted_dom_info(struct composite_context *ctx)
 
150
{
 
151
        struct sid2domain_state *state =
 
152
                talloc_get_type(ctx->async.private_data,
 
153
                                struct sid2domain_state);
 
154
        struct wb_dom_info *info;
 
155
 
 
156
        state->ctx->status = wb_trusted_dom_info_recv(ctx, state, &info);
 
157
        if (!composite_is_ok(state->ctx)) return;
 
158
 
 
159
        ctx = wb_init_domain_send(state, state->service, info);
 
160
 
 
161
        composite_continue(state->ctx, ctx, sid2domain_recv_init, state);
 
162
}
 
163
 
 
164
static void sid2domain_recv_init(struct composite_context *ctx)
 
165
{
 
166
        struct sid2domain_state *state =
 
167
                talloc_get_type(ctx->async.private_data,
 
168
                                struct sid2domain_state);
 
169
        struct wbsrv_domain *existing;
 
170
 
 
171
        state->ctx->status = wb_init_domain_recv(ctx, state,
 
172
                                                 &state->domain);
 
173
        if (!composite_is_ok(state->ctx)) {
 
174
                DEBUG(10, ("Could not init domain\n"));
 
175
                return;
 
176
        }
 
177
 
 
178
        existing = find_domain_from_sid(state->service, state->sid);
 
179
        if (existing != NULL) {
 
180
                DEBUG(5, ("Initialized domain twice, dropping second one\n"));
 
181
                talloc_free(state->domain);
 
182
                state->domain = existing;
 
183
        }
 
184
 
 
185
        talloc_steal(state->service, state->domain);
 
186
        DLIST_ADD(state->service->domains, state->domain);
 
187
 
 
188
        composite_done(state->ctx);
 
189
}
 
190
 
 
191
NTSTATUS wb_sid2domain_recv(struct composite_context *ctx,
 
192
                            struct wbsrv_domain **result)
 
193
{
 
194
        NTSTATUS status = composite_wait(ctx);
 
195
        if (NT_STATUS_IS_OK(status)) {
 
196
                struct sid2domain_state *state =
 
197
                        talloc_get_type(ctx->private_data,
 
198
                                        struct sid2domain_state);
 
199
                *result = state->domain;
 
200
        }
 
201
        talloc_free(ctx);
 
202
        return status;
 
203
}
 
204
 
 
205
NTSTATUS wb_sid2domain(TALLOC_CTX *mem_ctx, struct wbsrv_service *service,
 
206
                       const struct dom_sid *sid,
 
207
                       struct wbsrv_domain **result)
 
208
{
 
209
        struct composite_context *c = wb_sid2domain_send(mem_ctx, service,
 
210
                                                         sid);
 
211
        return wb_sid2domain_recv(c, result);
 
212
}