1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
|
/*
SSSD
Helper routines for file descriptor events
Authors:
Sumit Bose <sbose@redhat.com>
Copyright (C) 2010 Red Hat
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 "util/util.h"
#include "providers/ldap/sdap_async_private.h"
struct sdap_fd_events {
#ifdef HAVE_LDAP_CONNCB
struct ldap_conncb *conncb;
#else
struct tevent_fd *fde;
#endif
};
int get_fd_from_ldap(LDAP *ldap, int *fd)
{
int ret;
ret = ldap_get_option(ldap, LDAP_OPT_DESC, fd);
if (ret != LDAP_OPT_SUCCESS) {
DEBUG(1, ("Failed to get fd from ldap!!\n"));
*fd = -1;
return EIO;
}
return EOK;
}
#ifdef HAVE_LDAP_CONNCB
static int remove_connection_callback(TALLOC_CTX *mem_ctx)
{
int lret;
struct ldap_conncb *conncb = talloc_get_type(mem_ctx, struct ldap_conncb);
struct ldap_cb_data *cb_data = talloc_get_type(conncb->lc_arg,
struct ldap_cb_data);
lret = ldap_get_option(cb_data->sh->ldap, LDAP_OPT_CONNECT_CB, conncb);
if (lret != LDAP_OPT_SUCCESS) {
DEBUG(1, ("Failed to remove connection callback.\n"));
} else {
DEBUG(9, ("Successfully removed connection callback.\n"));
}
return lret;
}
static int sdap_ldap_connect_callback_add(LDAP *ld, Sockbuf *sb,
LDAPURLDesc *srv,
struct sockaddr *addr,
struct ldap_conncb *ctx)
{
int ret;
ber_socket_t ber_fd;
struct fd_event_item *fd_event_item;
struct ldap_cb_data *cb_data = talloc_get_type(ctx->lc_arg,
struct ldap_cb_data);
if (cb_data == NULL) {
DEBUG(1, ("sdap_ldap_connect_callback_add called without "
"callback data.\n"));
return EINVAL;
}
ret = ber_sockbuf_ctrl(sb, LBER_SB_OPT_GET_FD, &ber_fd);
if (ret == -1) {
DEBUG(1, ("ber_sockbuf_ctrl failed.\n"));
return EINVAL;
}
DEBUG(9, ("New LDAP connection to [%s] with fd [%d].\n",
ldap_url_desc2str(srv), ber_fd));
fd_event_item = talloc_zero(cb_data, struct fd_event_item);
if (fd_event_item == NULL) {
DEBUG(1, ("talloc failed.\n"));
return ENOMEM;
}
fd_event_item->fde = tevent_add_fd(cb_data->ev, fd_event_item, ber_fd,
TEVENT_FD_READ, sdap_ldap_result,
cb_data->sh);
if (fd_event_item->fde == NULL) {
DEBUG(1, ("tevent_add_fd failed.\n"));
talloc_free(fd_event_item);
return ENOMEM;
}
fd_event_item->fd = ber_fd;
DLIST_ADD(cb_data->fd_list, fd_event_item);
return LDAP_SUCCESS;
}
static void sdap_ldap_connect_callback_del(LDAP *ld, Sockbuf *sb,
struct ldap_conncb *ctx)
{
int ret;
ber_socket_t ber_fd;
struct fd_event_item *fd_event_item;
struct ldap_cb_data *cb_data = talloc_get_type(ctx->lc_arg,
struct ldap_cb_data);
if (sb == NULL || cb_data == NULL) {
return;
}
ret = ber_sockbuf_ctrl(sb, LBER_SB_OPT_GET_FD, &ber_fd);
if (ret == -1) {
DEBUG(1, ("ber_sockbuf_ctrl failed.\n"));
return;
}
DEBUG(9, ("Closing LDAP connection with fd [%d].\n", ber_fd));
DLIST_FOR_EACH(fd_event_item, cb_data->fd_list) {
if (fd_event_item->fd == ber_fd) {
break;
}
}
if (fd_event_item == NULL) {
DEBUG(1, ("No event for fd [%d] found.\n", ber_fd));
return;
}
DLIST_REMOVE(cb_data->fd_list, fd_event_item);
talloc_zfree(fd_event_item);
return;
}
#else
static int sdap_install_ldap_callbacks(struct sdap_handle *sh,
struct tevent_context *ev)
{
int fd;
int ret;
if (sh->sdap_fd_events) {
DEBUG(1, ("sdap_install_ldap_callbacks is called with already "
"initialized sdap_fd_events.\n"));
return EINVAL;
}
sh->sdap_fd_events = talloc_zero(sh, struct sdap_fd_events);
if (!sh->sdap_fd_events) {
DEBUG(1, ("talloc_zero failed.\n"));
return ENOMEM;
}
ret = get_fd_from_ldap(sh->ldap, &fd);
if (ret) return ret;
sh->sdap_fd_events->fde = tevent_add_fd(ev, sh->sdap_fd_events, fd,
TEVENT_FD_READ, sdap_ldap_result,
sh);
if (!sh->sdap_fd_events->fde) {
talloc_zfree(sh->sdap_fd_events);
return ENOMEM;
}
DEBUG(8, ("Trace: sh[%p], connected[%d], ops[%p], fde[%p], ldap[%p]\n",
sh, (int)sh->connected, sh->ops, sh->sdap_fd_events->fde,
sh->ldap));
return EOK;
}
#endif
errno_t setup_ldap_connection_callbacks(struct sdap_handle *sh,
struct tevent_context *ev)
{
#ifdef HAVE_LDAP_CONNCB
int ret;
struct ldap_cb_data *cb_data;
sh->sdap_fd_events = talloc_zero(sh, struct sdap_fd_events);
if (sh->sdap_fd_events == NULL) {
DEBUG(1, ("talloc_zero failed.\n"));
ret = ENOMEM;
goto fail;
}
sh->sdap_fd_events->conncb = talloc_zero(sh->sdap_fd_events,
struct ldap_conncb);
if (sh->sdap_fd_events->conncb == NULL) {
DEBUG(1, ("talloc_zero failed.\n"));
ret = ENOMEM;
goto fail;
}
cb_data = talloc_zero(sh->sdap_fd_events->conncb, struct ldap_cb_data);
if (cb_data == NULL) {
DEBUG(1, ("talloc_zero failed.\n"));
ret = ENOMEM;
goto fail;
}
cb_data->sh = sh;
cb_data->ev = ev;
sh->sdap_fd_events->conncb->lc_add = sdap_ldap_connect_callback_add;
sh->sdap_fd_events->conncb->lc_del = sdap_ldap_connect_callback_del;
sh->sdap_fd_events->conncb->lc_arg = cb_data;
ret = ldap_set_option(sh->ldap, LDAP_OPT_CONNECT_CB,
sh->sdap_fd_events->conncb);
if (ret != LDAP_OPT_SUCCESS) {
DEBUG(1, ("Failed to set connection callback\n"));
ret = EFAULT;
goto fail;
}
talloc_set_destructor((TALLOC_CTX *) sh->sdap_fd_events->conncb,
remove_connection_callback);
return EOK;
fail:
talloc_zfree(sh->sdap_fd_events);
return ret;
#else
DEBUG(9, ("LDAP connection callbacks are not supported.\n"));
return EOK;
#endif
}
errno_t sdap_set_connected(struct sdap_handle *sh, struct tevent_context *ev)
{
int ret = EOK;
sh->connected = true;
#ifndef HAVE_LDAP_CONNCB
ret = sdap_install_ldap_callbacks(sh, ev);
#endif
return ret;
}
|
