7 This file is part of avahi.
9 avahi is free software; you can redistribute it and/or modify it
10 under the terms of the GNU Lesser General Public License as
11 published by the Free Software Foundation; either version 2.1 of the
12 License, or (at your option) any later version.
14 avahi is distributed in the hope that it will be useful, but WITHOUT
15 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
16 or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General
17 Public License for more details.
19 You should have received a copy of the GNU Lesser General Public
20 License along with avahi; if not, write to the Free Software
21 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
25 /** \file core/publish.h Functions for publising local services and RRs */
27 /** \example core-publish-service.c Example how to register a DNS-SD
28 * service using an embedded mDNS stack. It behaves like a network
29 * printer registering both an IPP and a BSD LPR service. */
31 #include <avahi-common/cdecl.h>
33 #ifndef DOXYGEN_SHOULD_SKIP_THIS
37 /** A group of locally registered DNS RRs */
38 typedef struct AvahiSEntryGroup AvahiSEntryGroup;
40 #ifndef DOXYGEN_SHOULD_SKIP_THIS
46 #ifndef DOXYGEN_SHOULD_SKIP_THIS
50 /** Prototype for callback functions which are called whenever the state of an AvahiSEntryGroup object changes */
51 typedef void (*AvahiSEntryGroupCallback) (AvahiServer *s, AvahiSEntryGroup *g, AvahiEntryGroupState state, void* userdata);
53 /** Iterate through all local entries of the server. (when g is NULL)
54 * or of a specified entry group. At the first call state should point
55 * to a NULL initialized void pointer, That pointer is used to track
56 * the current iteration. It is not safe to call any other
57 * avahi_server_xxx() function during the iteration. If the last entry
58 * has been read, NULL is returned. */
59 const AvahiRecord *avahi_server_iterate(AvahiServer *s, AvahiSEntryGroup *g, void **state);
61 /** Create a new entry group. The specified callback function is
62 * called whenever the state of the group changes. Use entry group
63 * objects to keep track of you RRs. Add new RRs to a group using
64 * avahi_server_add_xxx(). Make sure to call avahi_s_entry_group_commit()
65 * to start the registration process for your RRs */
66 AvahiSEntryGroup *avahi_s_entry_group_new(AvahiServer *s, AvahiSEntryGroupCallback callback, void* userdata);
68 /** Free an entry group. All RRs assigned to the group are removed from the server */
69 void avahi_s_entry_group_free(AvahiSEntryGroup *g);
71 /** Commit an entry group. This starts the probing and registration process for all RRs in the group */
72 int avahi_s_entry_group_commit(AvahiSEntryGroup *g);
74 /** Remove all entries from the entry group and reset the state to AVAHI_ENTRY_GROUP_UNCOMMITED. */
75 void avahi_s_entry_group_reset(AvahiSEntryGroup *g);
77 /** Return 1 if the entry group is empty, i.e. has no records attached. */
78 int avahi_s_entry_group_is_empty(AvahiSEntryGroup *g);
80 /** Return the current state of the specified entry group */
81 AvahiEntryGroupState avahi_s_entry_group_get_state(AvahiSEntryGroup *g);
83 /** Change the opaque user data pointer attached to an entry group object */
84 void avahi_s_entry_group_set_data(AvahiSEntryGroup *g, void* userdata);
86 /** Return the opaque user data pointer currently set for the entry group object */
87 void* avahi_s_entry_group_get_data(AvahiSEntryGroup *g);
89 /** Add a new resource record to the server. Returns 0 on success, negative otherwise. */
91 AvahiServer *s, /**< The server object to add this record to */
92 AvahiSEntryGroup *g, /**< An entry group object if this new record shall be attached to one, or NULL. If you plan to remove the record sometime later you a required to pass an entry group object here. */
93 AvahiIfIndex interface, /**< A numeric index of a network interface to attach this record to, or AVAHI_IF_UNSPEC to attach this record to all interfaces */
94 AvahiProtocol protocol, /**< A protocol family to attach this record to. One of the AVAHI_PROTO_xxx constants. Use AVAHI_PROTO_UNSPEC to make this record available on all protocols (wich means on both IPv4 and IPv6). */
95 AvahiPublishFlags flags, /**< Special flags for this record */
96 AvahiRecord *r /**< The record to add. This function increases the reference counter of this object. */);
100 /** Add a PTR RR to the server. See avahi_server_add() for more information. */
101 int avahi_server_add_txt(
104 AvahiIfIndex interface,
105 AvahiProtocol protocol,
106 AvahiPublishFlags flags,
107 uint32_t ttl, /**< DNS TTL for this record */
108 const char *name, /**< TXT record name */
109 ... /**< Text record data, terminated by NULL */) AVAHI_GCC_SENTINEL;
111 /** Add a PTR RR to the server. Mostly identical to
112 * avahi_server_add_text but takes a va_list instead of a variable
113 * number of arguments */
114 int avahi_server_add_txt_va(
117 AvahiIfIndex interface,
118 AvahiProtocol protocol,
119 AvahiPublishFlags flags,
124 /** Add a PTR RR to the server. Mostly identical to
125 * avahi_server_add_text but takes an AvahiStringList record instead of a variable
126 * number of arguments. */
127 int avahi_server_add_txt_strlst(
130 AvahiIfIndex interface,
131 AvahiProtocol protocol,
132 AvahiPublishFlags flags,
135 AvahiStringList *strlst /**< TXT decord data as a AvahiString. This routine makes a deep copy of this object. */ );
137 /** Add an IP address mapping to the server. This will add both the
138 * host-name-to-address and the reverse mapping to the server. See
139 * avahi_server_add() for more information. If adding one of the RRs
140 * fails, the function returns with an error, but it is not defined if
141 * the other RR is deleted from the server or not. Therefore, you have
142 * to free the AvahiSEntryGroup and create a new one before
144 int avahi_server_add_address(
147 AvahiIfIndex interface,
148 AvahiProtocol protocol,
149 AvahiPublishFlags flags,
153 /** Add an DNS-SD service to the Server. This will add all required
154 * RRs to the server. See avahi_server_add() for more information. If
155 * adding one of the RRs fails, the function returns with an error,
156 * but it is not defined if the other RR is deleted from the server or
157 * not. Therefore, you have to free the AvahiSEntryGroup and create a
158 * new one before proceeding. */
159 int avahi_server_add_service(
162 AvahiIfIndex interface,
163 AvahiProtocol protocol,
164 AvahiPublishFlags flags,
165 const char *name, /**< Service name, e.g. "Lennart's Files" */
166 const char *type, /**< DNS-SD type, e.g. "_http._tcp" */
168 const char *host, /**< Host name where this servcie resides, or NULL if on the local host */
169 uint16_t port, /**< Port number of the service */
170 ... /**< Text records, terminated by NULL */) AVAHI_GCC_SENTINEL;
172 /** Mostly identical to avahi_server_add_service(), but takes an va_list for the TXT records. */
173 int avahi_server_add_service_va(
176 AvahiIfIndex interface,
177 AvahiProtocol protocol,
178 AvahiPublishFlags flags,
186 /** Mostly identical to avahi_server_add_service(), but takes an AvahiStringList object for the TXT records. The AvahiStringList object is copied. */
187 int avahi_server_add_service_strlst(
190 AvahiIfIndex interface,
191 AvahiProtocol protocol,
192 AvahiPublishFlags flags,
198 AvahiStringList *strlst);
200 /** Add a subtype for an already existing service */
201 int avahi_server_add_service_subtype(
204 AvahiIfIndex interface,
205 AvahiProtocol protocol,
206 AvahiPublishFlags flags,
207 const char *name, /**< Specify the name of main service you already added here */
208 const char *type, /**< Specify the main type of the service you already added here */
209 const char *domain, /**< Specify the main type of the service you already added here */
210 const char *subtype /**< The new subtype for the specified service */ );
212 /** Update the TXT record for a service with the data from the specified string list */
213 int avahi_server_update_service_txt_strlst(
216 AvahiIfIndex interface,
217 AvahiProtocol protocol,
218 AvahiPublishFlags flags,
222 AvahiStringList *strlst);
224 /** Update the TXT record for a service with the NULL terminated list of strings of the va_list. */
225 int avahi_server_update_service_txt_va(
228 AvahiIfIndex interface,
229 AvahiProtocol protocol,
230 AvahiPublishFlags flags,
236 /** Update the TXT record for a service with the NULL termonate list of strings */
237 int avahi_server_update_service_txt(
240 AvahiIfIndex interface,
241 AvahiProtocol protocol,
242 AvahiPublishFlags flags,
246 ...) AVAHI_GCC_SENTINEL;
248 /** The type of DNS server */
250 AVAHI_DNS_SERVER_RESOLVE, /**< Unicast DNS servers for normal resolves (_domain._udp)*/
251 AVAHI_DNS_SERVER_UPDATE, /**< Unicast DNS servers for updates (_dns-update._udp)*/
253 } AvahiDNSServerType;
255 /** Publish the specified unicast DNS server address via mDNS. You may
256 * browse for records create this way wit
257 * avahi_s_dns_server_browser_new(). */
258 int avahi_server_add_dns_server_address(
261 AvahiIfIndex interface,
262 AvahiProtocol protocol,
263 AvahiPublishFlags flags,
265 AvahiDNSServerType type,
266 const AvahiAddress *address,
267 uint16_t port /** should be 53 */);
269 /** Similar to avahi_server_add_dns_server_address(), but specify a
270 host name instead of an address. The specified host name should be
271 resolvable via mDNS */
272 int avahi_server_add_dns_server_name(
275 AvahiIfIndex interface,
276 AvahiProtocol protocol,
277 AvahiPublishFlags flags,
279 AvahiDNSServerType type,
281 uint16_t port /** should be 53 */);
284 #ifndef DOXYGEN_SHOULD_SKIP_THIS