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
|
/*
Unix SMB/CIFS implementation.
Main SMB server routines
Copyright (C) Andrew Tridgell 1992-1998
Copyright (C) Martin Pool 2002
Copyright (C) Jelmer Vernooij 2002-2003
Copyright (C) Volker Lendecke 1993-2007
Copyright (C) Jeremy Allison 1993-2007
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 "includes.h"
#include "smbd/smbd.h"
#include "smbd/globals.h"
#include "nt_printing.h"
#include "printing/pcap.h"
#include "printing/load.h"
#include "auth.h"
#include "messages.h"
#include "lib/param/loadparm.h"
/**
* @brief Purge stale printers and reload from pre-populated pcap cache.
*
* This function should normally only be called as a callback on a successful
* pcap_cache_reload() or after a MSG_PRINTER_CAP message is received.
*
* This function can cause DELETION of printers and drivers from our registry,
* so calling it on a failed pcap reload may REMOVE permanently all printers
* and drivers.
*
* @param[in] ev The event context.
*
* @param[in] msg_ctx The messaging context.
*/
void delete_and_reload_printers(struct tevent_context *ev,
struct messaging_context *msg_ctx)
{
struct auth_session_info *session_info = NULL;
struct spoolss_PrinterInfo2 *pinfo2 = NULL;
int snum;
int n_services = lp_numservices();
int pnum = lp_servicenumber(PRINTERS_NAME);
const char *pname;
NTSTATUS status;
bool skip = false;
SMB_ASSERT(pcap_cache_loaded());
DEBUG(10, ("reloading printer services from pcap cache\n"));
status = make_session_info_system(talloc_tos(), &session_info);
if (!NT_STATUS_IS_OK(status)) {
DEBUG(3, ("reload_printers: "
"Could not create system session_info\n"));
/* can't remove stale printers before we
* are fully initilized */
skip = true;
}
/* remove stale printers */
for (snum = 0; skip == false && snum < n_services; snum++) {
/* avoid removing PRINTERS_NAME or non-autoloaded printers */
if (snum == pnum || !(lp_snum_ok(snum) && lp_print_ok(snum) &&
lp_autoloaded(snum)))
continue;
pname = lp_printername(snum);
if (!pcap_printername_ok(pname)) {
DEBUG(3, ("removing stale printer %s\n", pname));
if (is_printer_published(session_info, session_info,
msg_ctx,
NULL, lp_servicename(snum),
NULL, &pinfo2)) {
nt_printer_publish(session_info,
session_info,
msg_ctx,
pinfo2,
DSPRINT_UNPUBLISH);
TALLOC_FREE(pinfo2);
}
nt_printer_remove(session_info, session_info, msg_ctx,
pname);
lp_killservice(snum);
}
}
load_printers(ev, msg_ctx);
TALLOC_FREE(session_info);
}
/****************************************************************************
Reload the services file.
**************************************************************************/
bool reload_services(struct messaging_context *msg_ctx, int smb_sock,
bool test)
{
bool ret;
if (lp_loaded()) {
char *fname = lp_configfile();
if (file_exist(fname) &&
!strcsequal(fname, get_dyn_CONFIGFILE())) {
set_dyn_CONFIGFILE(fname);
test = False;
}
}
reopen_logs();
if (test && !lp_file_list_changed())
return(True);
if (msg_ctx) {
lp_killunused(msg_ctx_to_sconn(msg_ctx), conn_snum_used);
} else {
lp_killunused(NULL, NULL);
}
ret = lp_load(get_dyn_CONFIGFILE(), False, False, True, True);
/* perhaps the config filename is now set */
if (!test)
reload_services(msg_ctx, smb_sock, True);
reopen_logs();
load_interfaces();
if (smb_sock != -1) {
set_socket_options(smb_sock,"SO_KEEPALIVE");
set_socket_options(smb_sock, lp_socket_options());
}
mangle_reset_cache();
reset_stat_cache();
/* this forces service parameters to be flushed */
set_current_service(NULL,0,True);
return(ret);
}
|
