2 * Definitions for network object lookup
6 * Laurent Deniel <laurent.deniel@free.fr>
8 * Wireshark - Network traffic analyzer
9 * By Gerald Combs <gerald@wireshark.org>
10 * Copyright 1998 Gerald Combs
12 * This program is free software; you can redistribute it and/or
13 * modify it under the terms of the GNU General Public License
14 * as published by the Free Software Foundation; either version 2
15 * of the License, or (at your option) any later version.
17 * This program is distributed in the hope that it will be useful,
18 * but WITHOUT ANY WARRANTY; without even the implied warranty of
19 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20 * GNU General Public License for more details.
22 * You should have received a copy of the GNU General Public License
23 * along with this program; if not, write to the Free Software
24 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
26 /* The buffers returned by these functions are all allocated with a
27 * packet lifetime and does not have have to be freed.
28 * However, take into account that when the packet dissection
29 * completes, these buffers will be automatically reclaimed/freed.
30 * If you need the buffer to remain for a longer scope than packet lifetime
31 * you must copy the content to an se_alloc() buffer.
37 #include <epan/address.h>
41 #endif /* __cplusplus */
44 #define MAXNAMELEN 64 /* max name length (hostname and port name) */
48 * Flag controlling what names to resolve.
50 WS_VAR_IMPORT guint32 gbl_resolv_flags;
52 /* 32 types are sufficient (as are 640k of RAM) */
53 /* FIXME: Maybe MANUF/m, IP/i, IP6/6, IPX/x, UDP+TCP/t etc would be
54 more useful/consistent */
55 #define RESOLV_NONE 0x0
56 #define RESOLV_MAC 0x1
57 #define RESOLV_NETWORK 0x2
58 #define RESOLV_TRANSPORT 0x4
59 #define RESOLV_CONCURRENT 0x8
61 #define RESOLV_ALL_ADDRS (RESOLV_MAC|RESOLV_NETWORK|RESOLV_TRANSPORT)
62 #define RESOLV_ALL 0xFFFFFFFF
64 /* global variables */
66 extern gchar *g_ethers_path;
67 extern gchar *g_ipxnets_path;
68 extern gchar *g_pethers_path;
69 extern gchar *g_pipxnets_path;
71 /* Functions in resolv.c */
73 /* Set the flags controlling what names to resolve */
74 extern void resolv_set_flags(guint32 flags);
77 * get_udp_port() returns the port name corresponding to that UDP port,
78 * or the port number as a string if not found.
80 extern gchar *get_udp_port(guint port);
83 * get_tcp_port() returns the port name corresponding to that TCP port,
84 * or the port number as a string if not found.
86 extern gchar *get_tcp_port(guint port);
89 * get_dccp_port() returns the port name corresponding to that DCCP port,
90 * or the port number as a string if not found.
92 extern gchar *get_dccp_port(guint port);
95 * get_sctp_port() returns the port name corresponding to that SCTP port,
96 * or the port number as a string if not found.
98 extern gchar *get_sctp_port(guint port);
100 /* get_addr_name takes as input an "address", as defined in address.h */
101 /* it returns a string that contains: */
102 /* - if the address is of a type that can be translated into a name, and the user */
103 /* has activated name resolution, the translated name */
104 /* - if the address is of type AT_NONE, a pointer to the string "NONE" */
105 /* - if the address is of any other type, the result of ep_address_to_str on the argument, */
106 /* which should be a string representation for the answer -e.g. "10.10.10.10" for IPv4 */
107 /* address 10.10.10.10 */
109 const gchar *get_addr_name(const address *addr);
110 const gchar *se_get_addr_name(const address *addr);
112 /* get_addr_name_buf solves an address in the same way as get_addr_name above */
113 /* The difference is that get_addr_name_buf takes as input a buffer, into which it puts */
114 /* the result which is always NUL ('\0') terminated. The buffer should be large enough to */
115 /* contain size characters including the terminator */
117 void get_addr_name_buf(const address *addr, gchar *buf, gsize size);
121 * Asynchronous host name lookup initialization, processing, and cleanup
124 /* host_name_lookup_init fires up an ADNS socket if we're using ADNS */
125 extern void host_name_lookup_init(void);
127 /** If we're using c-ares or ADNS, process outstanding host name lookups.
128 * This is called from a GLIB timeout in Wireshark and before processing
129 * each packet in TShark.
131 * @param data Ignored.
132 * @return True if any new objects have been resolved since the previous
133 * call. This can be used to trigger a display update, e.g. in Wireshark.
135 extern gboolean host_name_lookup_process(gpointer data);
137 /* host_name_lookup_cleanup cleans up an ADNS socket if we're using ADNS */
138 extern void host_name_lookup_cleanup(void);
140 /* get_hostname returns the host name or "%d.%d.%d.%d" if not found */
141 extern const gchar *get_hostname(const guint addr);
143 /* get_hostname6 returns the host name, or numeric addr if not found */
145 extern const gchar* get_hostname6(const struct e_in6_addr *ad);
147 /* get_ether_name returns the logical name if found in ethers files else
148 "<vendor>_%02x:%02x:%02x" if the vendor code is known else
149 "%02x:%02x:%02x:%02x:%02x:%02x" */
150 extern gchar *get_ether_name(const guint8 *addr);
152 /* get_ether_name returns the logical name if found in ethers files else NULL */
153 extern gchar *get_ether_name_if_known(const guint8 *addr);
155 /* get_manuf_name returns the vendor name or "%02x:%02x:%02x" if not known */
156 extern const gchar *get_manuf_name(const guint8 *addr);
158 /* get_manuf_name returns the vendor name or NULL if not known */
159 extern const gchar *get_manuf_name_if_known(const guint8 *addr);
161 /* get_ipxnet_name returns the logical name if found in an ipxnets file,
162 * or a string formatted with "%X" if not */
163 extern const gchar *get_ipxnet_name(const guint32 addr);
165 /* returns the ethernet address corresponding to name or NULL if not known */
166 extern guint8 *get_ether_addr(const gchar *name);
168 /* returns the ipx network corresponding to name. If name is unknown,
169 * 0 is returned and 'known' is set to FALSE. On success, 'known'
171 guint32 get_ipxnet_addr(const gchar *name, gboolean *known);
173 /* adds a hostname/IPv4 in the hash table */
174 extern void add_ipv4_name(const guint addr, const gchar *name);
176 /* adds a hostname/IPv6 in the hash table */
177 extern void add_ipv6_name(const struct e_in6_addr *addr, const gchar *name);
179 /* adds a hostname in the hash table */
180 extern gboolean add_ip_name_from_string (const char *addr, const char *name);
182 /* add ethernet address / name corresponding to IP address */
183 extern void add_ether_byip(const guint ip, const guint8 *eth);
185 /** Translates a string representing a hostname or dotted-decimal IPv4 address
186 * into a numeric IPv4 address value in network byte order. If compiled with
187 * c-ares, the request will wait a maximum of 250ms for the request to finish.
188 * Otherwise the wait time will be system-dependent, ususally much longer.
189 * Immediately returns FALSE for hostnames if network name resolution is
192 * @param[in] host The hostname.
193 * @param[out] addrp The numeric IPv4 address in network byte order.
194 * @return TRUE on success, FALSE on failure, timeout.
196 gboolean get_host_ipaddr(const char *host, guint32 *addrp);
198 /** Translates a string representing a hostname or colon-hex IPv6 address
199 * into a numeric IPv6 address value in network byte order. If compiled with
200 * c-ares, the request will wait a maximum of 250ms for the request to finish.
201 * Otherwise the wait time will be system-dependent, usually much longer.
202 * Immediately returns FALSE for hostnames if network name resolution is
205 * @param[in] host The hostname.
206 * @param[out] addrp The numeric IPv6 address in network byte order.
207 * @return TRUE on success, FALSE on failure or timeout.
209 gboolean get_host_ipaddr6(const char *host, struct e_in6_addr *addrp);
212 * Find out whether a hostname resolves to an ip or ipv6 address
213 * Return "ip6" if it is IPv6, "ip" otherwise (including the case
214 * that we don't know)
216 const char* host_ip_af(const char *host);
220 #endif /* __cplusplus */
222 #endif /* __RESOLV_H__ */