2 Unix SMB/Netbios implementation.
4 printing backend routines
5 Copyright (C) Tim Potter, 2002
6 Copyright (C) Gerald Carter, 2002
8 This program is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 2 of the License, or
11 (at your option) any later version.
13 This program is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with this program; if not, write to the Free Software
20 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
26 static TALLOC_CTX
*send_ctx
;
28 static unsigned int num_messages
;
30 static struct notify_queue
{
31 struct notify_queue
*next
, *prev
;
32 struct spoolss_notify_msg
*msg
;
36 } *notify_queue_head
= NULL
;
39 static BOOL
create_send_ctx(void)
42 send_ctx
= talloc_init("print notify queue");
50 /****************************************************************************
51 Turn a queue name into a snum.
52 ****************************************************************************/
54 int print_queue_snum(const char *qname
)
56 int snum
= lp_servicenumber(qname
);
57 if (snum
== -1 || !lp_print_ok(snum
))
62 /*******************************************************************
63 Used to decide if we need a short select timeout.
64 *******************************************************************/
66 BOOL
print_notify_messages_pending(void)
68 return (notify_queue_head
!= NULL
);
71 /*******************************************************************
72 Flatten data into a message.
73 *******************************************************************/
75 static BOOL
flatten_message(struct notify_queue
*q
)
77 struct spoolss_notify_msg
*msg
= q
->msg
;
79 size_t buflen
= 0, len
;
86 len
+= tdb_pack(buf
+ len
, buflen
- len
, "f", msg
->printer
);
88 len
+= tdb_pack(buf
+ len
, buflen
- len
, "ddddddd",
89 (uint32
)q
->tv
.tv_sec
, (uint32
)q
->tv
.tv_usec
,
90 msg
->type
, msg
->field
, msg
->id
, msg
->len
, msg
->flags
);
95 len
+= tdb_pack(buf
+ len
, buflen
- len
, "dd",
96 msg
->notify
.value
[0], msg
->notify
.value
[1]);
98 len
+= tdb_pack(buf
+ len
, buflen
- len
, "B",
99 msg
->len
, msg
->notify
.data
);
102 buf
= talloc_realloc(send_ctx
, buf
, len
);
115 /*******************************************************************
116 Send the batched messages - on a per-printer basis.
117 *******************************************************************/
119 static void print_notify_send_messages_to_printer(const char *printer
, unsigned int timeout
)
122 struct notify_queue
*pq
, *pq_next
;
123 size_t msg_count
= 0, offset
= 0;
126 pid_t
*pid_list
= NULL
;
128 /* Count the space needed to send the messages. */
129 for (pq
= notify_queue_head
; pq
; pq
= pq
->next
) {
130 if (strequal(printer
, pq
->msg
->printer
)) {
131 if (!flatten_message(pq
)) {
132 DEBUG(0,("print_notify_send_messages: Out of memory\n"));
133 talloc_destroy_pool(send_ctx
);
137 offset
+= (pq
->buflen
+ 4);
141 offset
+= 4; /* For count. */
143 buf
= talloc(send_ctx
, offset
);
145 DEBUG(0,("print_notify_send_messages: Out of memory\n"));
146 talloc_destroy_pool(send_ctx
);
152 SIVAL(buf
,offset
,msg_count
);
154 for (pq
= notify_queue_head
; pq
; pq
= pq_next
) {
157 if (strequal(printer
, pq
->msg
->printer
)) {
158 SIVAL(buf
,offset
,pq
->buflen
);
160 memcpy(buf
+ offset
, pq
->buf
, pq
->buflen
);
161 offset
+= pq
->buflen
;
163 /* Remove from list. */
164 DLIST_REMOVE(notify_queue_head
, pq
);
168 DEBUG(5, ("print_notify_send_messages_to_printer: sending %lu print notify message%s to printer %s\n",
169 (unsigned long)msg_count
, msg_count
!= 1 ? "s" : "", printer
));
172 * Get the list of PID's to send to.
175 if (!print_notify_pid_list(printer
, send_ctx
, &num_pids
, &pid_list
))
178 for (i
= 0; i
< num_pids
; i
++) {
179 unsigned int q_len
= messages_pending_for_pid(pid_list
[i
]);
181 DEBUG(5, ("print_notify_send_messages_to_printer: discarding notify to printer %s as queue length = %u\n",
185 message_send_pid_with_timeout(pid_list
[i
], MSG_PRINTER_NOTIFY2
, buf
, offset
, True
, timeout
);
189 /*******************************************************************
190 Actually send the batched messages.
191 *******************************************************************/
193 void print_notify_send_messages(unsigned int timeout
)
195 if (!print_notify_messages_pending())
198 if (!create_send_ctx())
201 while (print_notify_messages_pending())
202 print_notify_send_messages_to_printer(notify_queue_head
->msg
->printer
, timeout
);
204 talloc_destroy_pool(send_ctx
);
208 /**********************************************************************
209 deep copy a SPOOLSS_NOTIFY_MSG structure using a TALLOC_CTX
210 *********************************************************************/
212 static BOOL
copy_notify2_msg( SPOOLSS_NOTIFY_MSG
*to
, SPOOLSS_NOTIFY_MSG
*from
)
218 memcpy( to
, from
, sizeof(SPOOLSS_NOTIFY_MSG
) );
221 to
->notify
.data
= talloc_memdup(send_ctx
, from
->notify
.data
, from
->len
);
222 if ( !to
->notify
.data
) {
223 DEBUG(0,("copy_notify2_msg: talloc_memdup() of size [%d] failed!\n", from
->len
));
232 /*******************************************************************
233 Batch up print notify messages.
234 *******************************************************************/
236 static void send_spoolss_notify2_msg(SPOOLSS_NOTIFY_MSG
*msg
)
238 struct notify_queue
*pnqueue
, *tmp_ptr
;
241 * Ensure we only have one job total_bytes and job total_pages for
242 * each job. There is no point in sending multiple messages that match
243 * as they will just cause flickering updates in the client.
246 if ((num_messages
< 100) && (msg
->type
== JOB_NOTIFY_TYPE
) &&
247 (msg
->field
== JOB_NOTIFY_TOTAL_BYTES
|| msg
->field
== JOB_NOTIFY_TOTAL_PAGES
)) {
249 for (tmp_ptr
= notify_queue_head
; tmp_ptr
; tmp_ptr
= tmp_ptr
->next
) {
250 if (tmp_ptr
->msg
->type
== msg
->type
&&
251 tmp_ptr
->msg
->field
== msg
->field
&&
252 tmp_ptr
->msg
->id
== msg
->id
&&
253 tmp_ptr
->msg
->flags
== msg
->flags
&&
254 strequal(tmp_ptr
->msg
->printer
, msg
->printer
)) {
256 DEBUG(5, ("send_spoolss_notify2_msg: replacing message 0x%02x/0x%02x for printer %s \
257 in notify_queue\n", msg
->type
, msg
->field
, msg
->printer
));
265 /* Store the message on the pending queue. */
267 pnqueue
= talloc(send_ctx
, sizeof(*pnqueue
));
269 DEBUG(0,("send_spoolss_notify2_msg: Out of memory.\n"));
273 /* allocate a new msg structure and copy the fields */
275 if ( !(pnqueue
->msg
= (SPOOLSS_NOTIFY_MSG
*)talloc(send_ctx
, sizeof(SPOOLSS_NOTIFY_MSG
))) ) {
276 DEBUG(0,("send_spoolss_notify2_msg: talloc() of size [%lu] failed!\n",
277 (unsigned long)sizeof(SPOOLSS_NOTIFY_MSG
)));
280 copy_notify2_msg(pnqueue
->msg
, msg
);
281 GetTimeOfDay(&pnqueue
->tv
);
285 DEBUG(5, ("send_spoolss_notify2_msg: appending message 0x%02x/0x%02x for printer %s \
286 to notify_queue_head\n", msg
->type
, msg
->field
, msg
->printer
));
289 * Note we add to the end of the list to ensure
290 * the messages are sent in the order they were received. JRA.
293 DLIST_ADD_END(notify_queue_head
, pnqueue
, tmp_ptr
);
297 static void send_notify_field_values(const char *printer_name
, uint32 type
,
298 uint32 field
, uint32 id
, uint32 value1
,
299 uint32 value2
, uint32 flags
)
301 struct spoolss_notify_msg
*msg
;
303 if (lp_disable_spoolss())
306 if (!create_send_ctx())
309 msg
= (struct spoolss_notify_msg
*)talloc(send_ctx
, sizeof(struct spoolss_notify_msg
));
315 fstrcpy(msg
->printer
, printer_name
);
319 msg
->notify
.value
[0] = value1
;
320 msg
->notify
.value
[1] = value2
;
323 send_spoolss_notify2_msg(msg
);
326 static void send_notify_field_buffer(const char *printer_name
, uint32 type
,
327 uint32 field
, uint32 id
, uint32 len
,
330 struct spoolss_notify_msg
*msg
;
332 if (lp_disable_spoolss())
335 if (!create_send_ctx())
338 msg
= (struct spoolss_notify_msg
*)talloc(send_ctx
, sizeof(struct spoolss_notify_msg
));
344 fstrcpy(msg
->printer
, printer_name
);
349 msg
->notify
.data
= buffer
;
351 send_spoolss_notify2_msg(msg
);
354 /* Send a message that the printer status has changed */
356 void notify_printer_status_byname(const char *printer_name
, uint32 status
)
358 /* Printer status stored in value1 */
360 send_notify_field_values(printer_name
, PRINTER_NOTIFY_TYPE
,
361 PRINTER_NOTIFY_STATUS
, 0,
365 void notify_printer_status(int snum
, uint32 status
)
367 const char *printer_name
= SERVICE(snum
);
370 notify_printer_status_byname(printer_name
, status
);
373 void notify_job_status_byname(const char *printer_name
, uint32 jobid
, uint32 status
,
376 /* Job id stored in id field, status in value1 */
378 send_notify_field_values(printer_name
, JOB_NOTIFY_TYPE
,
379 JOB_NOTIFY_STATUS
, jobid
,
383 void notify_job_status(int snum
, uint32 jobid
, uint32 status
)
385 const char *printer_name
= SERVICE(snum
);
387 notify_job_status_byname(printer_name
, jobid
, status
, 0);
390 void notify_job_total_bytes(int snum
, uint32 jobid
, uint32 size
)
392 const char *printer_name
= SERVICE(snum
);
394 /* Job id stored in id field, status in value1 */
396 send_notify_field_values(printer_name
, JOB_NOTIFY_TYPE
,
397 JOB_NOTIFY_TOTAL_BYTES
, jobid
,
401 void notify_job_total_pages(int snum
, uint32 jobid
, uint32 pages
)
403 const char *printer_name
= SERVICE(snum
);
405 /* Job id stored in id field, status in value1 */
407 send_notify_field_values(printer_name
, JOB_NOTIFY_TYPE
,
408 JOB_NOTIFY_TOTAL_PAGES
, jobid
,
412 void notify_job_username(int snum
, uint32 jobid
, char *name
)
414 const char *printer_name
= SERVICE(snum
);
416 send_notify_field_buffer(
417 printer_name
, JOB_NOTIFY_TYPE
, JOB_NOTIFY_USER_NAME
,
418 jobid
, strlen(name
) + 1, name
);
421 void notify_job_name(int snum
, uint32 jobid
, char *name
)
423 const char *printer_name
= SERVICE(snum
);
425 send_notify_field_buffer(
426 printer_name
, JOB_NOTIFY_TYPE
, JOB_NOTIFY_DOCUMENT
,
427 jobid
, strlen(name
) + 1, name
);
430 void notify_job_submitted(int snum
, uint32 jobid
, time_t submitted
)
432 const char *printer_name
= SERVICE(snum
);
434 send_notify_field_buffer(
435 printer_name
, JOB_NOTIFY_TYPE
, JOB_NOTIFY_SUBMITTED
,
436 jobid
, sizeof(submitted
), (char *)&submitted
);
439 void notify_printer_driver(int snum
, char *driver_name
)
441 const char *printer_name
= SERVICE(snum
);
443 send_notify_field_buffer(
444 printer_name
, PRINTER_NOTIFY_TYPE
, PRINTER_NOTIFY_DRIVER_NAME
,
445 snum
, strlen(driver_name
) + 1, driver_name
);
448 void notify_printer_comment(int snum
, char *comment
)
450 const char *printer_name
= SERVICE(snum
);
452 send_notify_field_buffer(
453 printer_name
, PRINTER_NOTIFY_TYPE
, PRINTER_NOTIFY_COMMENT
,
454 snum
, strlen(comment
) + 1, comment
);
457 void notify_printer_sharename(int snum
, char *share_name
)
459 const char *printer_name
= SERVICE(snum
);
461 send_notify_field_buffer(
462 printer_name
, PRINTER_NOTIFY_TYPE
, PRINTER_NOTIFY_SHARE_NAME
,
463 snum
, strlen(share_name
) + 1, share_name
);
466 void notify_printer_printername(int snum
, char *printername
)
468 const char *printer_name
= SERVICE(snum
);
470 send_notify_field_buffer(
471 printer_name
, PRINTER_NOTIFY_TYPE
, PRINTER_NOTIFY_PRINTER_NAME
,
472 snum
, strlen(printername
) + 1, printername
);
475 void notify_printer_port(int snum
, char *port_name
)
477 const char *printer_name
= SERVICE(snum
);
479 send_notify_field_buffer(
480 printer_name
, PRINTER_NOTIFY_TYPE
, PRINTER_NOTIFY_PORT_NAME
,
481 snum
, strlen(port_name
) + 1, port_name
);
484 void notify_printer_location(int snum
, char *location
)
486 const char *printer_name
= SERVICE(snum
);
488 send_notify_field_buffer(
489 printer_name
, PRINTER_NOTIFY_TYPE
, PRINTER_NOTIFY_LOCATION
,
490 snum
, strlen(location
) + 1, location
);
493 void notify_printer_byname( const char *printername
, uint32 change
, char *value
)
495 int snum
= print_queue_snum(printername
);
496 int type
= PRINTER_NOTIFY_TYPE
;
501 send_notify_field_buffer( printername
, type
, change
, snum
, strlen(value
)+1, value
);
505 /****************************************************************************
506 Return a malloced list of pid_t's that are interested in getting update
507 messages on this print queue. Used in printing/notify to send the messages.
508 ****************************************************************************/
510 BOOL
print_notify_pid_list(const char *printername
, TALLOC_CTX
*mem_ctx
, size_t *p_num_pids
, pid_t
**pp_pid_list
)
512 struct tdb_print_db
*pdb
= NULL
;
513 TDB_CONTEXT
*tdb
= NULL
;
516 size_t i
, num_pids
, offset
;
522 pdb
= get_print_db_byname(printername
);
527 if (tdb_read_lock_bystring(tdb
, NOTIFY_PID_LIST_KEY
, 10) == -1) {
528 DEBUG(0,("print_notify_pid_list: Failed to lock printer %s database\n",
531 release_print_db(pdb
);
535 data
= get_printer_notify_pid_list( tdb
, printername
, True
);
542 num_pids
= data
.dsize
/ 8;
544 if ((pid_list
= (pid_t
*)talloc(mem_ctx
, sizeof(pid_t
) * num_pids
)) == NULL
) {
549 for( i
= 0, offset
= 0; offset
< data
.dsize
; offset
+= 8, i
++)
550 pid_list
[i
] = (pid_t
)IVAL(data
.dptr
, offset
);
552 *pp_pid_list
= pid_list
;
553 *p_num_pids
= num_pids
;
559 tdb_read_unlock_bystring(tdb
, NOTIFY_PID_LIST_KEY
);
561 release_print_db(pdb
);
562 SAFE_FREE(data
.dptr
);