1/*
2   Unix SMB/Netbios implementation.
3
4   Virtual lp system for printer testing
5
6   Copyright (C) Tim Potter 2000
7
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.
12
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.
17
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.
21*/
22
23#include "includes.h"
24
25#define PRINT_TDB "/tmp/vlp.tdb"
26#define PRINT_FIRSTJOB "100"
27
28static TDB_CONTEXT *tdb;
29
30struct vlp_job {
31	fstring owner;
32	int jobid;
33	fstring jobname;
34	int size;
35	int status;
36	time_t submit_time;
37	int deleted;
38};
39
40/* Print usage */
41
42static void usage(void)
43{
44	printf("Usage: print-test lpq|lprm|print|queuepause|queueresume|"
45	       "lppause|lpresume [args]\n");
46}
47
48/* Return an array of vlp jobs that is the printer queue */
49
50static void get_job_list(char *printer, struct vlp_job **job_list,
51			 int *num_jobs)
52{
53	fstring keystr;
54	TDB_DATA data;
55
56	slprintf(keystr, sizeof(keystr) - 1, "LPQ/%s", printer);
57	data = tdb_fetch_by_string(tdb, keystr);
58
59	*job_list = (struct vlp_job *)data.dptr;
60	*num_jobs = data.dsize / sizeof(struct vlp_job);
61}
62
63/* Store an array of vl jobs for the queue */
64
65static void set_job_list(char *printer, struct vlp_job *job_list,
66			 int num_jobs)
67{
68	fstring keystr;
69
70	slprintf(keystr, sizeof(keystr) - 1, "LPQ/%s", printer);
71
72	tdb_store_by_string(tdb, keystr, job_list,
73			    num_jobs * sizeof(struct vlp_job));
74}
75
76/* Return the next job number for a printer */
77
78static int next_jobnum(char *printer)
79{
80	fstring keystr;
81	int jobnum;
82
83	slprintf(keystr, sizeof(keystr) - 1, "JOBNUM/%s", printer);
84
85	tdb_lock_bystring(tdb, keystr);
86
87	jobnum = tdb_fetch_int(tdb, keystr);
88
89	/* Create next job index if none exists */
90
91	if (jobnum == -1) {
92		jobnum = atoi(PRINT_FIRSTJOB);
93	}
94
95	jobnum++;
96	tdb_store_int(tdb, keystr, jobnum);
97
98	tdb_unlock_bystring(tdb, keystr);
99
100	return jobnum;
101}
102
103static void set_printer_status(char *printer, int status)
104{
105	fstring keystr;
106	int result;
107
108	slprintf(keystr, sizeof(keystr) - 1, "STATUS/%s", printer);
109	result = tdb_store_int(tdb, keystr, status);
110}
111
112static int get_printer_status(char *printer)
113{
114	fstring keystr;
115	TDB_DATA data;
116
117	slprintf(keystr, sizeof(keystr) - 1, "STATUS/%s", printer);
118
119	data.dptr = keystr;
120	data.dsize = strlen(keystr) + 1;
121
122	if (!tdb_exists(tdb, data)) {
123		set_printer_status(printer, LPSTAT_OK);
124		return LPSTAT_OK;
125	}
126
127	return tdb_fetch_int(tdb, keystr);
128}
129
130/* Display printer queue */
131
132static int lpq_command(int argc, char **argv)
133{
134	char *printer;
135	struct vlp_job *job_list = NULL;
136	int i, num_jobs, job_count = 0;
137
138	if (argc != 2) {
139		printf("Usage: lpq <printername>\n");
140		return 1;
141	}
142
143	printer = argv[1];
144
145	/* Display printer status */
146
147	switch (get_printer_status(printer)) {
148	case LPSTAT_OK:
149		printf("enabled\n");
150		break;
151	case LPSTAT_STOPPED:
152		printf("disabled\n");
153		break;
154	case LPSTAT_ERROR:
155	default:
156		printf("error\n");
157		break;
158	}
159
160	/* Print queued documents */
161
162	get_job_list(printer, &job_list, &num_jobs);
163
164	for (i = 0; i < num_jobs; i++) {
165		if (job_list[i].deleted) continue;
166		printf("%d\t%d\t%d\t%ld\t%s\t%s\n", job_list[i].jobid,
167		       job_list[i].size,
168		       (i == 0 && job_list[i].status == LPQ_QUEUED) ?
169		       LPQ_SPOOLING : job_list[i].status,
170		       job_list[i].submit_time, job_list[i].owner,
171		       job_list[i].jobname);
172		job_count++;
173	}
174
175	free(job_list);
176
177	return 0;
178}
179
180/* Remove a job */
181
182static int lprm_command(int argc, char **argv)
183{
184	char *printer;
185	int jobid, num_jobs, i;
186	struct vlp_job *job_list;
187
188	if (argc < 3) {
189		printf("Usage: lprm <printername> <jobid>\n");
190		return 1;
191	}
192
193	printer = argv[1];
194	jobid = atoi(argv[2]);
195
196	get_job_list(printer, &job_list, &num_jobs);
197
198	for (i = 0; i < num_jobs; i++) {
199		if (job_list[i].jobid == jobid) {
200			job_list[i].deleted = 1;
201			set_job_list(printer, job_list, num_jobs);
202			break;
203		}
204	}
205
206	return 0;
207}
208
209/* print command = print-test %p %s */
210
211static int print_command(int argc, char **argv)
212{
213	char *printer;
214	fstring keystr;
215	struct passwd *pw;
216	TDB_DATA value;
217	struct vlp_job job;
218	int i;
219
220	if (argc < 3) {
221		printf("Usage: print <printername> <jobname>\n");
222		return 1;
223	}
224
225	printer = argv[1];
226
227	ZERO_STRUCT(job);
228
229	/* Create a job record */
230
231	for (i = 2; i < argc; i++) {
232		fstrcat(job.jobname, argv[i]);
233		if (i < argc - 1) {
234			fstrcat(job.jobname, " ");
235		}
236	}
237
238	if (!(pw = getpwuid(getuid()))) {
239		return 1;
240	}
241
242	fstrcpy(job.owner, pw->pw_name);
243
244	job.jobid = next_jobnum(printer);
245	job.size = 666;
246	job.submit_time = time(NULL);
247
248	/* Store job entry in queue */
249
250	slprintf(keystr, sizeof(keystr) - 1, "LPQ/%s", printer);
251
252	value = tdb_fetch_by_string(tdb, keystr);
253
254	if (value.dptr) {
255
256		/* Add job to end of queue */
257
258		value.dptr = realloc(value.dptr, value.dsize +
259				     sizeof(struct vlp_job));
260		if (!value.dptr) return 1;
261
262		memcpy(value.dptr + value.dsize, &job, sizeof(struct vlp_job));
263
264		tdb_store_by_string(tdb, keystr, value.dptr, value.dsize +
265				    sizeof(struct vlp_job));
266
267		free(value.dptr);
268
269	} else {
270
271		/* Create new queue */
272
273		tdb_store_by_string(tdb, keystr, &job, sizeof(struct vlp_job));
274	}
275
276	return 0;
277}
278
279/* Pause the queue */
280
281static int queuepause_command(int argc, char **argv)
282{
283	char *printer;
284
285	if (argc != 2) {
286		printf("Usage: queuepause <printername>\n");
287		return 1;
288	}
289
290	printer = argv[1];
291	set_printer_status(printer, LPSTAT_STOPPED);
292
293	return 0;
294}
295
296/* Resume the queue */
297
298static int queueresume_command(int argc, char **argv)
299{
300	char *printer;
301
302	if (argc != 2) {
303		printf("Usage: queueresume <printername>\n");
304		return 1;
305	}
306
307	printer = argv[1];
308	set_printer_status(printer, LPSTAT_OK);
309
310	return 0;
311}
312
313/* Pause a job */
314
315static int lppause_command(int argc, char **argv)
316{
317	struct vlp_job *job_list;
318	char *printer;
319	int jobid, num_jobs, i;
320
321	if (argc != 3) {
322		printf("Usage: lppause <printername> <jobid>\n");
323		return 1;
324	}
325
326	printer = argv[1];
327	jobid = atoi(argv[2]);
328
329	get_job_list(printer, &job_list, &num_jobs);
330
331	for (i = 0; i < num_jobs; i++) {
332		if (job_list[i].jobid == jobid) {
333			job_list[i].status = LPQ_PAUSED;
334			set_job_list(printer, job_list, num_jobs);
335			return 0;
336		}
337	}
338
339	return 1;
340}
341
342/* Resume a job */
343
344static int lpresume_command(int argc, char **argv)
345{
346	struct vlp_job *job_list;
347	char *printer;
348	int jobid, num_jobs, i;
349
350	if (argc != 3) {
351		printf("Usage: lpresume <printername> <jobid>\n");
352		return 1;
353	}
354
355	printer = argv[1];
356	jobid = atoi(argv[2]);
357
358	get_job_list(printer, &job_list, &num_jobs);
359
360	for (i = 0; i < num_jobs; i++) {
361		if (job_list[i].jobid == jobid) {
362			job_list[i].status = LPQ_QUEUED;
363			set_job_list(printer, job_list, num_jobs);
364			return 0;
365		}
366	}
367
368	return 1;
369}
370
371int main(int argc, char **argv)
372{
373	/* Parameter check */
374
375	if (argc == 1) {
376		usage();
377		return 1;
378	}
379
380	/* Initialise */
381
382	if (!(tdb = tdb_open(PRINT_TDB, 0, 0, O_RDWR | O_CREAT,
383			     0666))) {
384		printf("%s: unable to open %s\n", argv[0], PRINT_TDB);
385		return 1;
386	}
387
388	/* Ensure we are modes 666 */
389
390	chmod(PRINT_TDB, 0666);
391
392	/* Do commands */
393
394	if (strcmp(argv[1], "lpq") == 0) {
395		return lpq_command(argc - 1, &argv[1]);
396	}
397
398	if (strcmp(argv[1], "lprm") == 0) {
399		return lprm_command(argc - 1, &argv[1]);
400	}
401
402	if (strcmp(argv[1], "print") == 0) {
403		return print_command(argc - 1, &argv[1]);
404	}
405
406	if (strcmp(argv[1], "queuepause") == 0) {
407		return queuepause_command(argc - 1, &argv[1]);
408	}
409
410	if (strcmp(argv[1], "queueresume") == 0) {
411		return queueresume_command(argc - 1, &argv[1]);
412	}
413
414	if (strcmp(argv[1], "lppause") == 0) {
415		return lppause_command(argc - 1, &argv[1]);
416	}
417
418	if (strcmp(argv[1], "lpresume") == 0) {
419		return lpresume_command(argc - 1, &argv[1]);
420	}
421
422	/* Unknown command */
423
424	printf("%s: invalid command %s\n", argv[0], argv[1]);
425	return 1;
426}
427