1/***************************************************************************
2 *
3 * probe-printer.c : Probe for prnio(7i) printer device information
4 *
5 * Copyright 2007 Sun Microsystems, Inc.  All rights reserved.
6 * Use is subject to license terms.
7 *
8 * Licensed under the Academic Free License version 2.1
9 *
10 **************************************************************************/
11
12#pragma ident	"%Z%%M%	%I%	%E% SMI"
13
14#ifdef HAVE_CONFIG_H
15#include <config.h>
16#endif
17
18#include <errno.h>
19#include <string.h>
20#include <strings.h>
21#include <ctype.h>
22#include <stdlib.h>
23#include <stdio.h>
24#include <sys/param.h>
25#include <sys/types.h>
26#include <dirent.h>
27#include <sys/ioctl.h>
28#include <sys/prnio.h>
29#include <fcntl.h>
30#include <unistd.h>
31#include <ctype.h>
32
33#include <libhal.h>
34#include <logger.h>
35
36#include "printer.h"
37
38static int
39prnio_printer_info(char *device_file, char **manufacturer, char **model,
40		char **description, char **serial_number, char ***command_set)
41{
42	struct prn_1284_device_id id;
43	char buf[BUFSIZ];
44	int fd = -1, rc = -1;
45
46	memset(&id, 0, sizeof (id));
47	memset(&buf, 0, sizeof (buf));
48	id.id_data = buf;
49	id.id_len = sizeof (buf);
50
51	if ((fd = open (device_file, O_RDONLY | O_NONBLOCK)) < 0) {
52		goto prnio_out;
53	}
54
55	if (ioctl(fd, PRNIOC_GET_1284_DEVID, &id) < 0) {
56		goto prnio_out;
57	}
58
59	HAL_DEBUG(("IEEE-1284 DeviceId = %s", buf));
60
61	rc = ieee1284_devid_to_printer_info(buf, manufacturer, model,
62			description, NULL, serial_number, command_set);
63
64prnio_out:
65	if (fd != -1)
66		close(fd);
67
68	return (rc);
69}
70
71/*
72 * It is assumed that all devices that support prnio(7i), also have a link
73 * in /dev/printers.
74 */
75static char *
76prnio_device_name(void)
77{
78	char *result = NULL;
79	char *devfs_path;
80	DIR *dp;
81
82	if (((devfs_path = getenv("HAL_PROP_SOLARIS_DEVFS_PATH")) != NULL) &&
83	    ((dp = opendir("/dev/printers")) != NULL)) {
84		struct dirent *ep;
85
86		while ((ep = readdir(dp)) != NULL) {
87			char path[MAXPATHLEN], lpath[MAXPATHLEN];
88
89			snprintf(path, sizeof (path), "/dev/printers/%s",
90					ep->d_name);
91			memset(lpath, 0, sizeof (lpath));
92			if ((readlink(path, lpath, sizeof (lpath)) > 0) &&
93			    (strstr(lpath, devfs_path) != NULL)) {
94				result = strdup(path);
95				break;
96			}
97		}
98		closedir(dp);
99	}
100
101	return (result);
102}
103
104int
105main(int argc, char *argv[])
106{
107	int ret = 1;
108	char *udi;
109	char *device_file;
110	char *manufacturer = NULL,
111	     *model = NULL,
112	     *serial_number = NULL,
113	     *description = NULL,
114	     **command_set = NULL;
115	DBusError error;
116	LibHalContext *ctx = NULL;
117	LibHalChangeSet *cs = NULL;
118
119	if ((udi = getenv("UDI")) == NULL)
120		goto out;
121	if ((device_file = getenv("HAL_PROP_PRINTER_DEVICE")) == NULL)
122		device_file = prnio_device_name();
123
124	if (device_file == NULL)
125		goto out;
126
127	setup_logger();
128
129	dbus_error_init(&error);
130	if ((ctx = libhal_ctx_init_direct(&error)) == NULL)
131		goto out;
132
133	if ((cs = libhal_device_new_changeset(udi)) == NULL) {
134		HAL_DEBUG(("Cannot allocate changeset"));
135		goto out;
136	}
137
138	/* Probe the printer for characteristics via prnio(7i) */
139	ret = prnio_printer_info(device_file, &manufacturer, &model,
140			&description, &serial_number, &command_set);
141	if (ret < 0) {
142		HAL_DEBUG(("Cannot get prnio data for %s: %s",
143				device_file, strerror(errno)));
144		goto out;
145	}
146
147	/* Add printer characteristics to the HAL device tree */
148	ret = add_printer_info(cs, udi, manufacturer, model, description,
149			serial_number, command_set, device_file);
150	if (ret < 0) {
151		HAL_DEBUG(("Cannot add printer data for %s to %s: %s",
152				device_file, udi, strerror(errno)));
153		goto out;
154	}
155
156	libhal_device_commit_changeset(ctx, cs, &error);
157
158	ret = 0;
159
160out:
161	if (cs != NULL) {
162		libhal_device_free_changeset(cs);
163	}
164
165	if (ctx != NULL) {
166		if (dbus_error_is_set(&error)) {
167			dbus_error_free(&error);
168		}
169		libhal_ctx_shutdown(ctx, &error);
170		libhal_ctx_free(ctx);
171	}
172
173	return (ret);
174}
175