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Viewing changes to gatchat/ppp_net.c

  • Committer: Denis Kenzior
  • Author(s): Lucas De Marchi
  • Date: 2011-03-18 23:31:14 UTC
  • Revision ID: git-v1:888e07863b24026413bac8f449de377c879e1044
message: add cancelled state

Based on patch from Yang Gu <gyagp0@gmail.com>

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gatchat/ppp_net.c
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 *
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 *  PPP library with GLib integration
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 *
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 *  Copyright (C) 2009-2011  Intel Corporation. All rights reserved.
 
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 *  Copyright (C) 2009-2010  Intel Corporation. All rights reserved.
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 *
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 *  This program is free software; you can redistribute it and/or modify
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 *  it under the terms of the GNU General Public License version 2 as
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        return TRUE;
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}
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void ppp_net_process_packet(struct ppp_net *net, const guint8 *packet,
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                                gsize plen)
 
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void ppp_net_process_packet(struct ppp_net *net, const guint8 *packet)
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{
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        GIOStatus status;
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        gsize bytes_written;
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        guint16 len;
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        if (plen < 4)
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                return;
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        /* find the length of the packet to transmit */
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        len = get_host_short(&packet[2]);
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        status = g_io_channel_write_chars(net->channel, (gchar *) packet,
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                                                MIN(len, plen),
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                                                &bytes_written, NULL);
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        if (status != G_IO_STATUS_NORMAL)
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                return;
 
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                                                len, &bytes_written, NULL);
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}
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/*
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        return net->if_name;
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}
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struct ppp_net *ppp_net_new(GAtPPP *ppp, int fd)
 
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struct ppp_net *ppp_net_new(GAtPPP *ppp)
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{
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        struct ppp_net *net;
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        GIOChannel *channel = NULL;
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        struct ifreq ifr;
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        int err;
 
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        int fd, err;
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        net = g_try_new0(struct ppp_net, 1);
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        if (net == NULL)
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                goto badalloc;
 
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                return NULL;
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        net->ppp_packet = ppp_packet_new(MAX_PACKET, PPP_IP_PROTO);
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        if (net->ppp_packet == NULL)
 
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        if (net->ppp_packet == NULL) {
 
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                g_free(net);
 
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                return NULL;
 
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        }
 
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        /* open a tun interface */
 
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        fd = open("/dev/net/tun", O_RDWR);
 
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        if (fd < 0)
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                goto error;
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        /*
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         * If the fd value is still the default one,
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         * open the tun interface and configure it.
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         */
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        memset(&ifr, 0, sizeof(ifr));
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        if (fd < 0) {
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                /* open a tun interface */
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                fd = open("/dev/net/tun", O_RDWR);
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                if (fd < 0) {
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                        ppp_debug(ppp, "Couldn't open tun device. "
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                                        "Do you run oFono as root and do you "
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                                        "have the TUN module loaded?");
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                        goto error;
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                }
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                ifr.ifr_flags = IFF_TUN | IFF_NO_PI;
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                strcpy(ifr.ifr_name, "ppp%d");
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                err = ioctl(fd, TUNSETIFF, (void *) &ifr);
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                if (err < 0)
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                        goto error;
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        } else {
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                err = ioctl(fd, TUNGETIFF, (void *) &ifr);
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                if (err < 0)
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                        goto error;
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        }
 
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        ifr.ifr_flags = IFF_TUN | IFF_NO_PI;
 
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        strcpy(ifr.ifr_name, "ppp%d");
 
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        err = ioctl(fd, TUNSETIFF, (void *) &ifr);
 
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        if (err < 0)
 
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                goto error;
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        net->if_name = strdup(ifr.ifr_name);
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        if (channel)
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                g_io_channel_unref(channel);
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        g_free(net->if_name);
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        g_free(net->ppp_packet);
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        g_free(net);
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badalloc:
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        if (fd >= 0)
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                close(fd);
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        g_free(net->if_name);
 
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        g_free(net->ppp_packet);
 
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        g_free(net);
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        return NULL;
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}
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void ppp_net_free(struct ppp_net *net)
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{
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        if (net->watch) {
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                g_source_remove(net->watch);
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                net->watch = 0;
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        }
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        g_source_remove(net->watch);
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        g_io_channel_unref(net->channel);
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        g_free(net->ppp_packet);
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        g_free(net->if_name);
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        g_free(net);
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}
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void ppp_net_suspend_interface(struct ppp_net *net)
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{
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        if (net == NULL || net->channel == NULL)
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                return;
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        if (net->watch == 0)
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                return;
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        g_source_remove(net->watch);
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        net->watch = 0;
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}
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void ppp_net_resume_interface(struct ppp_net *net)
240
 
{
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        if (net == NULL || net->channel == NULL)
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                return;
243
 
 
244
 
        net->watch = g_io_add_watch(net->channel,
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                        G_IO_IN | G_IO_HUP | G_IO_ERR | G_IO_NVAL,
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                        ppp_net_callback, net);
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}