summaryrefslogtreecommitdiffstats
path: root/krfb/srvloc/kserviceregistry.h
blob: 8cd965e600118de2d08225136cbf48679a205035 (plain)
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
157
158
159
160
161
/*
 *  Interface to register SLP services.
 *  Copyright (C) 2002 Tim Jansen <tim@tjansen.de>
 *
 *  This library is free software; you can redistribute it and/or
 *  modify it under the terms of the GNU Library General Public
 *  License as published by the Free Software Foundation; either
 *  version 2 of the License, or (at your option) any later version.
 *
 *  This library 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
 *  Library General Public License for more details.
 *
 *  You should have received a copy of the GNU Library General Public License
 *  along with this library; see the file COPYING.LIB.  If not, write to
 *  the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
 *  Boston, MA 02110-1301, USA.
 */

/*
 * TODO: put private variables and SLP-dependencies in private class
 */

#ifndef __KSERVICEREGISTRY_H
#define __KSERVICEREGISTRY_H

#include <tqstring.h>
#include <tqstringlist.h>
#include <tqmap.h>

class KServiceRegistryPrivate;

/**
 * KServiceRegistry allows you to announce your service using SLP (RFC 2608).
 *
 * Use KServiceRegistry to announce a service. The service will be valid 
 * until its lifespan ends, you unregister it or delete the KServiceRegistry,
 * whatever comes first. 
 * A service will be described using a Service URL and an optional list of 
 * attributes. The syntax for a simple Service URL is 
 * <pre>
 *   service:%srvtype%://%addrspec%
 * </pre>
 * where "%srvtype%" specifies the protocol and "%addrspec5" the address. 
 * Examples of valid Service URLs are "service:http://www.kde.org", 
 * "service:lpr://printer.example.org/myqueure" and 
 * "service:http://your.server.org:8080".
 * To provide more information about your service than just the protocol, 
 * port and address you can use abstract service types.
 * A Service URL that uses an abstract service type has the form 
 * <pre>
 *   service:%abstract-type%:%concrete-type%
 * </pre>
 * where %abstract-type% describes the kind of service and %concrete-type% specifies
 * the protocol and address. Examples are 
 * "service:printer:lpr://printer.example.com/lp0" and 
 * "service:printer:ipp://printer.example.com/".
 * Note that you cannot invent you own types but only take those that are 
 * registered at IANA. To create your own service type you must become a naming
 * authority. Then you can use service types of the form 
 * "%srvtype%.%naming-authority%". Assuming that "kde" is the id of a 
 * IANA-registered naming authority, a valid Service URL would be
 * "service:weatherp.kde://weather.example.com". You can find more information 
 * about Service URLs in the IETF RFCs 2608 and 3224.
 * Additionally each service can have one or more attributes to carry 
 * additional information about the service. Attributes are a simple pair of 
 * strings, one for the attributes name and one for the value. They can be 
 * used, for example, to describe the type of a printer or the email address
 * of an administrator. 
 * 
 * Service templates can be used to describe an abstract type, including the
 * syntax of the concrete type and the attributes. The use of service 
 * templates is described in RFC 2609, you can find the existing service 
 * templates at http://www.iana.org/assignments/svrloc-templates.htm .
 * 
 * Example:
 * <pre>
 *   KServiceRegistry ksr;
 *   KInetAddress kia = KInetAddress->getLocalAddress();
 *   ksr.registerService(TQString("service:remotedesktop.kde:vnc://%1:0").arg(kia->nodeName()),
 *                       "(type=shared)");
 *   delete kia;
 * </pre>
 * 
 * @version $Id$
 * @author Tim Jansen, tim@tjansen.de 
 */
class KServiceRegistry {
 public:
	/**
	 * Creates a new service registration instance for the given 
	 * language.
	 * @param lang the language as two letter code, or TQString::null for the 
	 *             system default
	 */
	KServiceRegistry(const TQString &lang = TQString::null);
	virtual ~KServiceRegistry();

	/**
	 * Returns true if service registration is generally possible.
	 * Reasons for a failure could be that the SLP libraries are not
	 * installed or no SA daemon (slpd) is installed
	 * @return true if service registration seems to be possible
	 */
	bool available();

	/**
	 * Creates a comma-separated string of lists, as required by many functions.
	 * @param map the items of this list will be converted
	 * @return the comma-separated list
	 */
	static TQString createCommaList(const TQStringList &values);

	/**
	 * Encodes an TQString for use as a attribute value. This will escape
	 * all characters that are not allowed. This method is only available
	 * when a SLP library is available, otherwise it will return the
	 * given value.
	 * @param value the value string to encode
	 * @return the encoded value string
	 */
	static TQString encodeAttributeValue(const TQString &value);

	/**
	 * Registers the given service. 
	 * @param serviceURL the service URL to register
	 * @param attributes a list of the attributes to register, encoded in 
	 *                   the format "(attr1=val1),(attr2=val2),(attr3=val3)"
	 *                   Use an empty string if you dont want to set attributes
	 * @param lifetime   the lifetime of the service in seconds, or 0 for infinite
	 * @return true if successful, false otherwise. False usually means that no 
	 *              SA daemon (slpd) is running.
	 */
	bool registerService(const TQString &serviceURL, 
			     TQString attributes = TQString::null, 
			     unsigned short lifetime = 0);
	
	/**
	 * Registers the given service. 
	 * @param serviceURL the service URL to register
	 * @param attributes a map of all attributes
	 * @param lifetime   the lifetime of the service in seconds, or 0 for infinite
	 * @return true if successful, false otherwise. False usually means that no 
	 *              SA daemon is running (slpd).
	 */	
	bool registerService(const TQString &serviceURL, 
			     TQMap<TQString,TQString> attributes, 
			     unsigned short lifetime = 0);
	
	/**
	 * Unregisters the given service.
	 * @param serviceURL the service URL to unregister
	 */
	void unregisterService(const TQString &serviceURL);

 private:
	KServiceRegistryPrivate *d;
};

#endif