source: mainline/uspace/app/lprint/lprint.c

Last change on this file was 10b21a1b, checked in by Jiri Svoboda <jiri@…>, 7 years ago

PC parallel port driver and printing utility

Add pc-lpt driver for the standard PC parallel port. Add lprint utility
to print a file or a short message to the printer port. Tested in Qemu.
  • Property mode set to 100644
File size: 6.1 KB
RevLine 
[10b21a1b]1/*
2 * Copyright (c) 2018 Jiri Svoboda
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 *
9 * - Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * - Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 * - The name of the author may not be used to endorse or promote products
15 * derived from this software without specific prior written permission.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 */
28
29/** @addtogroup lprint
30 * @{
31 */
32
33/**
34 * @file
35 * @brief Print on a printer
36 *
37 */
38
39#include <errno.h>
40#include <io/chardev.h>
41#include <loc.h>
42#include <stdio.h>
43#include <stdlib.h>
44#include <str.h>
45
46#define NAME "lprint"
47
48#define BUF_SIZE 1024
49
50static void syntax_print(void);
51
52/** Get default printer port.
53 *
54 * @param sid Place to store service ID of the printer port
55 * @return EOK on success or error code
56 */
57static errno_t lprint_get_def_printer_port(service_id_t *sid)
58{
59 category_id_t cid;
60 service_id_t *sids;
61 size_t nsids;
62 errno_t rc;
63
64 rc = loc_category_get_id("printer-port", &cid, 0);
65 if (rc != EOK)
66 return EIO;
67
68 rc = loc_category_get_svcs(cid, &sids, &nsids);
69 if (rc != EOK)
70 return EIO;
71
72 if (nsids < 1) {
73 free(sids);
74 return EIO;
75 }
76
77 *sid = sids[0];
78 free(sids);
79 return EOK;
80}
81
82/** Print a message.
83 *
84 * @param chardev Character device
85 * @param argc Number of arguments
86 * @param argv Arguments - strings to print
87 *
88 * @return EOK on success or error code
89 */
90static errno_t lprint_msg(chardev_t *chardev, int argc, char *argv[])
91{
92 const char *msg;
93 size_t nbytes;
94 const char *sep;
95 errno_t rc;
96
97 while (argc > 0) {
98 msg = *argv;
99 --argc;
100 ++argv;
101
102 rc = chardev_write(chardev, msg, str_size(msg), &nbytes);
103 if (rc != EOK) {
104 printf(NAME ": Failed sending data.\n");
105 return EIO;
106 }
107
108 sep = argc > 0 ? " " : "\n";
109
110 rc = chardev_write(chardev, sep, str_size(sep), &nbytes);
111 if (rc != EOK) {
112 printf(NAME ": Failed sending data.\n");
113 return EIO;
114 }
115 }
116
117 return EOK;
118}
119
120/** Print a file.
121 *
122 * @param chardev Character device
123 * @param fname File name
124 *
125 * @return EOK on success or error code
126 */
127static errno_t lprint_file(chardev_t *chardev, const char *fname)
128{
129 void *buf;
130 size_t nread, nwritten;
131 FILE *f = NULL;
132 errno_t rc;
133
134 buf = malloc(BUF_SIZE);
135 if (buf == NULL) {
136 printf(NAME ": Out of memory.\n");
137 rc = ENOMEM;
138 goto error;
139 }
140
141 f = fopen(fname, "rb");
142 if (f == NULL) {
143 printf(NAME ": Cannot open '%s'.\n", fname);
144 rc = EIO;
145 goto error;
146 }
147
148 while (true) {
149 nread = fread(buf, 1, BUF_SIZE, f);
150 if (ferror(f)) {
151 printf(NAME ": Error reading file.\n");
152 rc = EIO;
153 goto error;
154 }
155
156 if (nread == 0)
157 break;
158
159 rc = chardev_write(chardev, buf, nread, &nwritten);
160 if (rc != EOK) {
161 printf(NAME ": Failed sending data.\n");
162 rc = EIO;
163 goto error;
164 }
165
166 }
167
168 fclose(f);
169 return EOK;
170error:
171 if (buf != NULL)
172 free(buf);
173 if (f != NULL)
174 fclose(f);
175 return rc;
176}
177
178int main(int argc, char **argv)
179{
180 chardev_t *chardev;
181 errno_t rc;
182 async_sess_t *sess;
183 service_id_t sid;
184 const char *svc_name = NULL;
185 bool msg_mode = false;
186
187 if (argc < 2) {
188 printf(NAME ": Error, argument missing.\n");
189 syntax_print();
190 return 1;
191 }
192
193 --argc;
194 ++argv;
195
196 while (*argv != NULL && *argv[0] == '-') {
197 if (str_cmp(*argv, "-d") == 0) {
198 --argc;
199 ++argv;
200
201 if (*argv == NULL) {
202 printf(NAME ": Error, argument missing.\n");
203 syntax_print();
204 return 1;
205 }
206
207 svc_name = *argv;
208 --argc;
209 ++argv;
210 continue;
211 }
212
213 if (str_cmp(*argv, "-m") == 0) {
214 msg_mode = true;
215 --argc;
216 ++argv;
217 continue;
218 }
219
220 if (str_cmp(*argv, "--help") == 0) {
221 --argc;
222 ++argv;
223
224 if (*argv != NULL) {
225 printf(NAME ": Error, unexpected argument.\n");
226 syntax_print();
227 return 1;
228 }
229
230 syntax_print();
231 return 0;
232 }
233
234 printf(NAME ": Error, invalid argument.\n");
235 syntax_print();
236 return 1;
237 }
238
239 if (argc < 1) {
240 printf(NAME ": Error, argument missing.\n");
241 syntax_print();
242 return 1;
243 }
244
245 if (!msg_mode && argc > 1) {
246 printf(NAME ": Error, too many arguments.\n");
247 syntax_print();
248 return 1;
249 }
250
251 if (svc_name != NULL) {
252 rc = loc_service_get_id(svc_name, &sid, 0);
253 if (rc != EOK) {
254 printf(NAME ": Failed resolving printer port service "
255 "'%s'.\n", svc_name);
256 return 1;
257 }
258 } else {
259 rc = lprint_get_def_printer_port(&sid);
260 if (rc != EOK) {
261 printf(NAME ": No printer found.\n");
262 return 1;
263 }
264 }
265
266 sess = loc_service_connect(sid, INTERFACE_DDF, 0);
267 if (sess == NULL) {
268 printf(NAME ": Failed connecting printer port service.\n");
269 return 1;
270 }
271
272 rc = chardev_open(sess, &chardev);
273 if (rc != EOK) {
274 async_hangup(sess);
275 printf(NAME ": Failed opening printer port device.\n");
276 return 1;
277 }
278
279 if (msg_mode) {
280 rc = lprint_msg(chardev, argc, argv);
281 if (rc != EOK) {
282 chardev_close(chardev);
283 return 1;
284 }
285 } else {
286 rc = lprint_file(chardev, argv[0]);
287 if (rc != EOK) {
288 chardev_close(chardev);
289 return 1;
290 }
291 }
292
293 chardev_close(chardev);
294 return 0;
295}
296
297/** Print syntax help. */
298static void syntax_print(void)
299{
300 printf("syntax:\n"
301 "\tlprint [<options>] <file>\n"
302 "\tlprint [<options>] -m <message...>\n"
303 "options:\n"
304 "\t-d <device>Print to the specified device\n");
305}
306
307/**
308 * @}
309 */
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