mirror of git://git.sysmocom.de/ofono
89 lines
2.3 KiB
C
89 lines
2.3 KiB
C
/*
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* This file is part of oFono - Open Source Telephony
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*
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* Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
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*
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* Contact: Rémi Denis-Courmont <remi.denis-courmont@nokia.com>
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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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* version 2 as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* 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 St, Fifth Floor, Boston, MA
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* 02110-1301 USA
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*
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*/
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#ifdef HAVE_CONFIG_H
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#include <config.h>
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#endif
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#include <stdint.h>
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#include <sys/types.h>
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#include <sys/socket.h>
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#include <sys/ioctl.h>
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#include <unistd.h>
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#include <fcntl.h>
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#include "phonet.h"
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#include <glib.h>
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#include "socket.h"
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GIOChannel *phonet_new(uint8_t resource)
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{
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GIOChannel *channel;
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struct sockaddr_pn addr = {
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.spn_family = AF_PHONET,
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.spn_resource = resource,
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};
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int fd = socket(PF_PHONET, SOCK_DGRAM, 0);
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if (fd == -1)
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return NULL;
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fcntl(fd, F_SETFD, FD_CLOEXEC);
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/* Use blocking mode on purpose. */
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if (bind(fd, (struct sockaddr *)&addr, sizeof(addr))) {
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close(fd);
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return NULL;
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}
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channel = g_io_channel_unix_new(fd);
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g_io_channel_set_close_on_unref(channel, TRUE);
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g_io_channel_set_encoding(channel, NULL, NULL);
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g_io_channel_set_buffered(channel, FALSE);
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return channel;
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}
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size_t phonet_peek_length(GIOChannel *channel)
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{
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int len;
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int fd = g_io_channel_unix_get_fd(channel);
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return ioctl(fd, FIONREAD, &len) ? 0 : len;
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}
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ssize_t phonet_read(GIOChannel *channel, void *restrict buf, size_t len,
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uint16_t *restrict obj, uint8_t *restrict res)
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{
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struct sockaddr_pn addr;
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socklen_t addrlen = sizeof(addr);
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ssize_t ret;
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ret = recvfrom(g_io_channel_unix_get_fd(channel), buf, len,
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MSG_DONTWAIT, (struct sockaddr *)&addr, &addrlen);
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if (ret == -1)
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return -1;
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if (obj != NULL)
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*obj = (addr.spn_dev << 8) | addr.spn_obj;
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if (res != NULL)
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*res = addr.spn_resource;
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return ret;
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}
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