3 * Wireshark - Network traffic analyzer
4 * By Gerald Combs <gerald@wireshark.org>
5 * Copyright 1998 Gerald Combs
7 * This program is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU General Public License
9 * as published by the Free Software Foundation; either version 2
10 * of the License, or (at your option) any later version.
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
36 #include "sync_pipe.h"
39 /****************************************************************************************************************/
40 /* sync_pipe handling */
43 /* write a single message header to the recipient pipe */
45 pipe_write_header(int pipe_fd, char indicator, int length)
47 guchar header[1+3]; /* indicator + 3-byte len */
50 g_assert(length <= SP_MAX_MSG_LEN);
52 /* write header (indicator + 3-byte len) */
53 header[0] = indicator;
54 header[1] = (length >> 16) & 0xFF;
55 header[2] = (length >> 8) & 0xFF;
56 header[3] = (length >> 0) & 0xFF;
59 return write(pipe_fd, header, sizeof header);
63 /* write a message to the recipient pipe in the standard format
64 (3 digit message length (excluding length and indicator field),
65 1 byte message indicator and the rest is the message).
66 If msg is NULL, the message has only a length and indicator. */
68 pipe_write_block(int pipe_fd, char indicator, const char *msg)
73 /*g_warning("write %d enter", pipe_fd);*/
76 len = (int) strlen(msg) + 1; /* including the terminating '\0'! */
81 /* write header (indicator + 3-byte len) */
82 ret = pipe_write_header(pipe_fd, indicator, len);
87 /* write value (if we have one) */
89 /*g_warning("write %d indicator: %c value len: %u msg: %s", pipe_fd, indicator, len, msg);*/
90 ret = write(pipe_fd, msg, len);
95 /*g_warning("write %d indicator: %c no value", pipe_fd, indicator);*/
98 /*g_warning("write %d leave", pipe_fd);*/
103 sync_pipe_errmsg_to_parent(int pipe_fd, const char *error_msg,
104 const char *secondary_error_msg)
107 /* first write a "master header" with the length of the two messages plus their "slave headers" */
108 pipe_write_header(pipe_fd, SP_ERROR_MSG, (int) (strlen(error_msg) + 1 + 4 + strlen(secondary_error_msg) + 1 + 4));
109 pipe_write_block(pipe_fd, SP_ERROR_MSG, error_msg);
110 pipe_write_block(pipe_fd, SP_ERROR_MSG, secondary_error_msg);