forked from osmocom/wireshark
141 lines
3.5 KiB
C++
141 lines
3.5 KiB
C++
/* interface_toolbar_reader.cpp
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*
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* Wireshark - Network traffic analyzer
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* By Gerald Combs <gerald@wireshark.org>
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* Copyright 1998 Gerald Combs
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#include "config.h"
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#ifdef HAVE_SYS_TYPES_H
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#include <sys/types.h>
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#endif
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#ifdef HAVE_UNISTD_H
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#include <unistd.h>
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#endif
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#include <errno.h>
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#include "interface_toolbar_reader.h"
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#include "sync_pipe.h"
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#include "wsutil/file_util.h"
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#include <QThread>
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const int header_size = 6;
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// To do:
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// - Add support for WIN32
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void InterfaceToolbarReader::loop()
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{
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#ifndef _WIN32
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struct timeval timeout;
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QByteArray header;
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QByteArray payload;
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fd_set readfds;
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int fd = ws_open(control_in_.toUtf8(), O_RDONLY | O_BINARY | O_NONBLOCK, 0);
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if (fd == -1)
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{
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emit finished();
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return;
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}
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forever
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{
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FD_ZERO(&readfds);
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FD_SET(fd, &readfds);
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timeout.tv_sec = 2;
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timeout.tv_usec = 0;
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int ret = select(fd + 1, &readfds, NULL, NULL, &timeout);
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if (ret == -1)
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{
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break;
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}
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#if QT_VERSION >= QT_VERSION_CHECK(5, 2, 0)
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if (QThread::currentThread()->isInterruptionRequested())
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{
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break;
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}
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#endif
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if (ret > 0 && FD_ISSET(fd, &readfds))
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{
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header.resize(header_size);
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if (ws_read(fd, header.data(), header_size) != header_size)
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{
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break;
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}
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unsigned char high_nibble = header[1] & 0xFF;
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unsigned char mid_nibble = header[2] & 0xFF;
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unsigned char low_nibble = header[3] & 0xFF;
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ssize_t payload_len = (ssize_t)((high_nibble << 16) + (mid_nibble << 8) + low_nibble) - 2;
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payload.resize(payload_len);
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if (payload_len > 0)
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{
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ssize_t total_len = 0;
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while (total_len < payload_len)
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{
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ssize_t read_len = ws_read(fd, payload.data() + total_len, payload_len - total_len);
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if (read_len == -1)
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{
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if (errno != EAGAIN)
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{
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break;
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}
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}
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else
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{
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total_len += read_len;
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}
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}
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if (total_len != payload_len)
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{
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break;
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}
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}
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if (header[0] == SP_TOOLBAR_CTRL)
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{
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emit received(ifname_, (unsigned char)header[4], (unsigned char)header[5], payload);
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}
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}
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}
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ws_close(fd);
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#endif
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emit finished();
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}
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/*
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* Editor modelines
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*
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* Local Variables:
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* c-basic-offset: 4
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* tab-width: 8
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* indent-tabs-mode: nil
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* End:
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*
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* ex: set shiftwidth=4 tabstop=8 expandtab:
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* :indentSize=4:tabSize=8:noTabs=true:
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*/
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