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
|
/*
SSSD
PAM Responder
Copyright (C) Simo Sorce <ssorce@redhat.com> 2009
Copyright (C) Sumit Bose <sbose@redhat.com> 2009
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 <stdio.h>
#include <unistd.h>
#include <fcntl.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/socket.h>
#include <sys/un.h>
#include <string.h>
#include <sys/time.h>
#include <errno.h>
#include "popt.h"
#include "util/util.h"
#include "db/sysdb.h"
#include "confdb/confdb.h"
#include "dbus/dbus.h"
#include "sbus/sssd_dbus.h"
#include "responder/common/responder_packet.h"
#include "providers/data_provider.h"
#include "monitor/monitor_interfaces.h"
#include "sbus/sbus_client.h"
#include "responder/pam/pamsrv.h"
#define SSS_PAM_SBUS_SERVICE_VERSION 0x0001
#define SSS_PAM_SBUS_SERVICE_NAME "pam"
struct sbus_method monitor_pam_methods[] = {
{ MON_CLI_METHOD_PING, monitor_common_pong },
{ MON_CLI_METHOD_RES_INIT, monitor_common_res_init },
{ MON_CLI_METHOD_ROTATE, monitor_common_rotate_logs },
{ NULL, NULL }
};
struct sbus_interface monitor_pam_interface = {
MONITOR_INTERFACE,
MONITOR_PATH,
SBUS_DEFAULT_VTABLE,
monitor_pam_methods,
NULL
};
static struct sbus_method pam_dp_methods[] = {
{ NULL, NULL }
};
struct sbus_interface pam_dp_interface = {
DP_INTERFACE,
DP_PATH,
SBUS_DEFAULT_VTABLE,
pam_dp_methods,
NULL
};
static void pam_dp_reconnect_init(struct sbus_connection *conn, int status, void *pvt)
{
struct be_conn *be_conn = talloc_get_type(pvt, struct be_conn);
int ret;
/* Did we reconnect successfully? */
if (status == SBUS_RECONNECT_SUCCESS) {
DEBUG(1, ("Reconnected to the Data Provider.\n"));
/* Identify ourselves to the data provider */
ret = dp_common_send_id(be_conn->conn,
DATA_PROVIDER_VERSION,
"PAM");
/* all fine */
if (ret == EOK) return;
}
/* Handle failure */
DEBUG(0, ("Could not reconnect to %s provider.\n",
be_conn->domain->name));
/* FIXME: kill the frontend and let the monitor restart it ? */
/* pam_shutdown(rctx); */
}
static int pam_process_init(TALLOC_CTX *mem_ctx,
struct tevent_context *ev,
struct confdb_ctx *cdb)
{
struct sss_cmd_table *pam_cmds;
struct be_conn *iter;
struct pam_ctx *pctx;
int ret, max_retries;
pctx = talloc_zero(mem_ctx, struct pam_ctx);
if (!pctx) {
return ENOMEM;
}
pam_cmds = get_pam_cmds();
ret = sss_process_init(pctx, ev, cdb,
pam_cmds,
SSS_PAM_SOCKET_NAME,
SSS_PAM_PRIV_SOCKET_NAME,
CONFDB_PAM_CONF_ENTRY,
SSS_PAM_SBUS_SERVICE_NAME,
SSS_PAM_SBUS_SERVICE_VERSION,
&monitor_pam_interface,
"PAM", &pam_dp_interface,
&pctx->rctx);
if (ret != EOK) {
return ret;
}
pctx->rctx->pvt_ctx = pctx;
/* Enable automatic reconnection to the Data Provider */
/* FIXME: "retries" is too generic, either get it from a global config
* or specify these retries are about the sbus connections to DP */
ret = confdb_get_int(pctx->rctx->cdb, pctx->rctx, CONFDB_PAM_CONF_ENTRY,
CONFDB_SERVICE_RECON_RETRIES, 3, &max_retries);
if (ret != EOK) {
DEBUG(0, ("Failed to set up automatic reconnection\n"));
return ret;
}
for (iter = pctx->rctx->be_conns; iter; iter = iter->next) {
sbus_reconnect_init(iter->conn, max_retries,
pam_dp_reconnect_init, iter);
}
return EOK;
}
int main(int argc, const char *argv[])
{
int opt;
poptContext pc;
struct main_context *main_ctx;
int ret;
struct poptOption long_options[] = {
POPT_AUTOHELP
SSSD_MAIN_OPTS
POPT_TABLEEND
};
pc = poptGetContext(argv[0], argc, argv, long_options, 0);
while((opt = poptGetNextOpt(pc)) != -1) {
switch(opt) {
default:
fprintf(stderr, "\nInvalid option %s: %s\n\n",
poptBadOption(pc, 0), poptStrerror(opt));
poptPrintUsage(pc, stderr, 0);
return 1;
}
}
poptFreeContext(pc);
/* set up things like debug, signals, daemonization, etc... */
debug_log_file = "sssd_pam";
ret = server_setup("sssd[pam]", 0, CONFDB_PAM_CONF_ENTRY, &main_ctx);
if (ret != EOK) return 2;
ret = die_if_parent_died();
if (ret != EOK) {
/* This is not fatal, don't return */
DEBUG(2, ("Could not set up to exit when parent process does\n"));
}
ret = pam_process_init(main_ctx,
main_ctx->event_ctx,
main_ctx->confdb_ctx);
if (ret != EOK) return 3;
/* loop on main */
server_loop(main_ctx);
return 0;
}
|
