2 * Synchronisation between Wireshark capture parent and child instances
4 * Wireshark - Network traffic analyzer
5 * By Gerald Combs <gerald@wireshark.org>
6 * Copyright 1998 Gerald Combs
8 * This program is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU General Public License
10 * as published by the Free Software Foundation; either version 2
11 * of the License, or (at your option) any later version.
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
26 * Sync mode capture (internal interface).
28 * Will start a new Wireshark child instance which will do the actual capture
32 #ifndef __CAPTURE_SYNC_H__
33 #define __CAPTURE_SYNC_H__
36 * Start a new capture session.
37 * Create a capture child which is doing the real capture work.
38 * The various capture_input_... functions will be called, if something had
41 * Most of the parameters are passed through the global capture_opts.
43 * @param capture_opts the options
44 * @param cap_session a handle for the capture session
45 * @param update_cb update screen
46 * @return TRUE if a capture could be started, FALSE if not
49 sync_pipe_start(capture_options *capture_opts, capture_session *cap_session, void(*update_cb)(void));
51 /** User wants to stop capturing, gracefully close the capture child */
53 sync_pipe_stop(capture_session *cap_session);
55 /** User wants to stop the program, just kill the child as soon as possible */
57 sync_pipe_kill(int fork_child);
59 /** Set wireless channel using dumpcap */
61 sync_interface_set_80211_chan(const gchar *iface, const char *freq, const gchar *type,
62 gchar **data, gchar **primary_msg,
63 gchar **secondary_msg, void (*update_cb)(void));
65 /** Get an interface list using dumpcap */
67 sync_interface_list_open(gchar **data, gchar **primary_msg,
68 gchar **secondary_msg, void (*update_cb)(void));
70 /** Get interface capabilities using dumpcap */
72 sync_if_capabilities_open(const gchar *ifname, gboolean monitor_mode,
73 gchar **data, gchar **primary_msg,
74 gchar **secondary_msg, void (*update_cb)(void));
76 /** Start getting interface statistics using dumpcap. */
78 sync_interface_stats_open(int *read_fd, int *fork_child, gchar **msg, void (*update_cb)(void));
80 /** Stop gathering statistics. */
82 sync_interface_stats_close(int *read_fd, int *fork_child, gchar **msg);
84 /** Read a line from a pipe, similar to fgets. Non-blocking. */
86 sync_pipe_gets_nonblock(int pipe_fd, char *bytes, int max);
89 * Routines supplied by our caller; we call them back to notify them
92 * XXX - this is *really* ugly. We should do this better.
96 * Capture child told us we have a new (or the first) capture file.
99 capture_input_new_file(capture_session *cap_session, gchar *new_file);
102 * Capture child told us we have new packets to read.
105 capture_input_new_packets(capture_session *cap_session, int to_read);
108 * Capture child told us how many dropped packets it counted.
111 capture_input_drops(capture_session *cap_session, guint32 dropped);
114 * Capture child told us that an error has occurred while starting the capture.
117 capture_input_error_message(capture_session *cap_session, char *error_message,
118 char *secondary_error_msg);
121 * Capture child told us that an error has occurred while parsing a
122 * capture filter when starting/running the capture.
125 capture_input_cfilter_error_message(capture_session *cap_session, guint i,
126 char *error_message);
129 * Capture child closed its side of the pipe, report any error and
130 * do the required cleanup.
133 capture_input_closed(capture_session *cap_session, gchar *msg);
135 /* set a callback to be called after fork with the pid of the forked child */
136 extern void capture_sync_set_fetch_dumpcap_pid_cb(void(*cb)(int pid));
138 #endif /* capture_sync.h */