2010-03-23 00:05:56 +00:00
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/*
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*
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* PPP library with GLib integration
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*
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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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* 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,
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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 St, Fifth Floor, Boston, MA 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 <stdio.h>
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#include <fcntl.h>
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#include <unistd.h>
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#include <string.h>
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#include <termios.h>
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2010-04-01 20:47:25 +00:00
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#include <sys/stat.h>
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2010-04-02 03:33:03 +00:00
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#include <sys/time.h>
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2010-03-23 00:05:56 +00:00
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#include <arpa/inet.h>
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#include <glib.h>
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#include "gatutil.h"
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#include "gatppp.h"
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#include "ppp.h"
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2010-04-04 05:32:27 +00:00
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#define DEFAULT_MRU 1500
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#define DEFAULT_ACCM 0x00000000
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#define BUFFERSZ (DEFAULT_MRU * 2)
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#define PPP_ESC 0x7d
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#define PPP_FLAG_SEQ 0x7e
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#define PPP_ADDR_FIELD 0xff
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#define PPP_CTRL 0x03
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enum ppp_phase {
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PPP_DEAD = 0,
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PPP_ESTABLISHMENT,
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PPP_AUTHENTICATION,
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PPP_NETWORK,
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PPP_TERMINATION,
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};
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2010-04-04 05:25:09 +00:00
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struct _GAtPPP {
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gint ref_count;
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enum ppp_phase phase;
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struct pppcp_data *lcp;
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struct auth_data *auth;
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struct pppcp_data *ipcp;
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struct ppp_net_data *net;
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guint8 buffer[BUFFERSZ];
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int index;
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gint mru;
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char user_name[256];
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char passwd[256];
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gboolean pfc;
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gboolean acfc;
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guint32 xmit_accm[8];
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guint32 recv_accm;
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GIOChannel *modem;
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GAtPPPConnectFunc connect_cb;
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gpointer connect_data;
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GAtDisconnectFunc disconnect_cb;
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gpointer disconnect_data;
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gint read_watch;
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gint write_watch;
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GAtDebugFunc debugf;
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gpointer debug_data;
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int record_fd;
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GQueue *xmit_queue;
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};
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void ppp_debug(GAtPPP *ppp, const char *str)
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{
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if (!ppp || !ppp->debugf)
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return;
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ppp->debugf(str, ppp->debug_data);
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}
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void ppp_connect_cb(GAtPPP *ppp, GAtPPPConnectStatus success,
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const char *ip, const char *dns1, const char *dns2)
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{
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if (ppp->connect_cb == NULL)
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return;
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ppp->connect_cb(success, ppp->net->if_name,
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ip, dns1, dns2, ppp->connect_data);
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}
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2010-04-02 03:33:03 +00:00
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#define PPPINITFCS16 0xffff /* Initial FCS value */
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#define PPPGOODFCS16 0xf0b8 /* Good final FCS value */
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struct frame_buffer {
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gsize len;
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guint8 bytes[0];
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};
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/*
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* FCS lookup table copied from rfc1662.
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*/
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static guint16 fcstab[256] = {
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0x0000, 0x1189, 0x2312, 0x329b, 0x4624, 0x57ad, 0x6536, 0x74bf,
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0x8c48, 0x9dc1, 0xaf5a, 0xbed3, 0xca6c, 0xdbe5, 0xe97e, 0xf8f7,
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0x1081, 0x0108, 0x3393, 0x221a, 0x56a5, 0x472c, 0x75b7, 0x643e,
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0x9cc9, 0x8d40, 0xbfdb, 0xae52, 0xdaed, 0xcb64, 0xf9ff, 0xe876,
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0x2102, 0x308b, 0x0210, 0x1399, 0x6726, 0x76af, 0x4434, 0x55bd,
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0xad4a, 0xbcc3, 0x8e58, 0x9fd1, 0xeb6e, 0xfae7, 0xc87c, 0xd9f5,
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0x3183, 0x200a, 0x1291, 0x0318, 0x77a7, 0x662e, 0x54b5, 0x453c,
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0xbdcb, 0xac42, 0x9ed9, 0x8f50, 0xfbef, 0xea66, 0xd8fd, 0xc974,
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0x4204, 0x538d, 0x6116, 0x709f, 0x0420, 0x15a9, 0x2732, 0x36bb,
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0xce4c, 0xdfc5, 0xed5e, 0xfcd7, 0x8868, 0x99e1, 0xab7a, 0xbaf3,
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0x5285, 0x430c, 0x7197, 0x601e, 0x14a1, 0x0528, 0x37b3, 0x263a,
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0xdecd, 0xcf44, 0xfddf, 0xec56, 0x98e9, 0x8960, 0xbbfb, 0xaa72,
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0x6306, 0x728f, 0x4014, 0x519d, 0x2522, 0x34ab, 0x0630, 0x17b9,
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0xef4e, 0xfec7, 0xcc5c, 0xddd5, 0xa96a, 0xb8e3, 0x8a78, 0x9bf1,
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0x7387, 0x620e, 0x5095, 0x411c, 0x35a3, 0x242a, 0x16b1, 0x0738,
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0xffcf, 0xee46, 0xdcdd, 0xcd54, 0xb9eb, 0xa862, 0x9af9, 0x8b70,
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0x8408, 0x9581, 0xa71a, 0xb693, 0xc22c, 0xd3a5, 0xe13e, 0xf0b7,
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0x0840, 0x19c9, 0x2b52, 0x3adb, 0x4e64, 0x5fed, 0x6d76, 0x7cff,
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0x9489, 0x8500, 0xb79b, 0xa612, 0xd2ad, 0xc324, 0xf1bf, 0xe036,
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0x18c1, 0x0948, 0x3bd3, 0x2a5a, 0x5ee5, 0x4f6c, 0x7df7, 0x6c7e,
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0xa50a, 0xb483, 0x8618, 0x9791, 0xe32e, 0xf2a7, 0xc03c, 0xd1b5,
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0x2942, 0x38cb, 0x0a50, 0x1bd9, 0x6f66, 0x7eef, 0x4c74, 0x5dfd,
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0xb58b, 0xa402, 0x9699, 0x8710, 0xf3af, 0xe226, 0xd0bd, 0xc134,
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0x39c3, 0x284a, 0x1ad1, 0x0b58, 0x7fe7, 0x6e6e, 0x5cf5, 0x4d7c,
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0xc60c, 0xd785, 0xe51e, 0xf497, 0x8028, 0x91a1, 0xa33a, 0xb2b3,
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0x4a44, 0x5bcd, 0x6956, 0x78df, 0x0c60, 0x1de9, 0x2f72, 0x3efb,
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0xd68d, 0xc704, 0xf59f, 0xe416, 0x90a9, 0x8120, 0xb3bb, 0xa232,
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0x5ac5, 0x4b4c, 0x79d7, 0x685e, 0x1ce1, 0x0d68, 0x3ff3, 0x2e7a,
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0xe70e, 0xf687, 0xc41c, 0xd595, 0xa12a, 0xb0a3, 0x8238, 0x93b1,
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0x6b46, 0x7acf, 0x4854, 0x59dd, 0x2d62, 0x3ceb, 0x0e70, 0x1ff9,
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0xf78f, 0xe606, 0xd49d, 0xc514, 0xb1ab, 0xa022, 0x92b9, 0x8330,
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0x7bc7, 0x6a4e, 0x58d5, 0x495c, 0x3de3, 0x2c6a, 0x1ef1, 0x0f78
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};
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/*
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* Calculate a new fcs given the current fcs and the new data.
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* copied from rfc1662
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*
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* The FCS field is calculated over all bits of the Address, Control,
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* Protocol, Information and Padding fields, not including any start
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* and stop bits (asynchronous) nor any bits (synchronous) or octets
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* (asynchronous or synchronous) inserted for transparency. This
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* also does not include the Flag Sequences nor the FCS field itself.
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*/
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static guint16 ppp_fcs(guint16 fcs, guint8 c)
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{
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guint16 new_fcs;
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new_fcs = (fcs >> 8) ^ fcstab[(fcs ^ c) & 0xff];
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return new_fcs;
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}
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/*
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* escape any chars less than 0x20, and check the transmit accm table to
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* see if this character should be escaped.
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*/
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static gboolean ppp_escape(GAtPPP *ppp, guint8 c, gboolean lcp)
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{
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if ((lcp && c < 0x20) || (ppp->xmit_accm[c >> 5] & (1 << (c & 0x1f))))
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return TRUE;
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return FALSE;
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}
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static void ppp_put(GAtPPP *ppp, guint8 *buf, int *pos,
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guint8 c, gboolean lcp)
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{
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int i = *pos;
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/* escape characters if needed, copy into buf, increment pos */
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if (ppp_escape(ppp, c, lcp)) {
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buf[i++] = PPP_ESC;
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buf[i++] = c ^ 0x20;
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} else
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buf[i++] = c;
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*pos = i;
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}
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/* XXX implement PFC and ACFC */
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2010-04-02 18:13:20 +00:00
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static struct frame_buffer *ppp_encode(GAtPPP *ppp, guint8 *data, int len)
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2010-04-02 03:33:03 +00:00
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{
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int pos = 0;
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int i = 0;
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guint16 fcs = PPPINITFCS16;
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guint16 proto = get_host_short(data);
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gboolean lcp = (proto == LCP_PROTOCOL);
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2010-04-02 18:13:20 +00:00
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guint8 *frame;
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struct frame_buffer *fb =
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g_try_malloc0(BUFFERSZ + sizeof(struct frame_buffer));
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if (!fb)
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2010-04-02 03:33:03 +00:00
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return NULL;
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2010-04-02 18:13:20 +00:00
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frame = fb->bytes;
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2010-04-02 03:33:03 +00:00
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/* copy in the HDLC framing */
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frame[pos++] = PPP_FLAG_SEQ;
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/* from here till end flag, calculate FCS over each character */
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fcs = ppp_fcs(fcs, PPP_ADDR_FIELD);
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ppp_put(ppp, frame, &pos, PPP_ADDR_FIELD, lcp);
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fcs = ppp_fcs(fcs, PPP_CTRL);
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ppp_put(ppp, frame, &pos, PPP_CTRL, lcp);
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/*
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* for each byte, first calculate FCS, then do escaping if
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* neccessary
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*/
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while (len--) {
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fcs = ppp_fcs(fcs, data[i]);
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ppp_put(ppp, frame, &pos, data[i++], lcp);
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}
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/* add FCS */
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fcs ^= 0xffff; /* complement */
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ppp_put(ppp, frame, &pos, (guint8)(fcs & 0x00ff), lcp);
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ppp_put(ppp, frame, &pos, (guint8)((fcs >> 8) & 0x00ff), lcp);
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/* add flag */
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frame[pos++] = PPP_FLAG_SEQ;
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2010-04-02 18:13:20 +00:00
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fb->len = pos;
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return fb;
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2010-04-02 03:33:03 +00:00
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}
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/* called when we have received a complete ppp frame */
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static void ppp_recv(GAtPPP *ppp, struct frame_buffer *frame)
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{
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guint protocol = ppp_proto(frame->bytes);
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guint8 *packet = ppp_info(frame->bytes);
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2010-04-02 20:10:29 +00:00
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switch (protocol) {
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case PPP_IP_PROTO:
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ppp_net_process_packet(ppp->net, packet);
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break;
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case LCP_PROTOCOL:
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pppcp_process_packet(ppp->lcp, packet);
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break;
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case IPCP_PROTO:
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pppcp_process_packet(ppp->ipcp, packet);
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break;
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case CHAP_PROTOCOL:
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if (ppp->auth->proto == protocol &&
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ppp->auth->proto_data != NULL) {
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ppp->auth->process_packet(ppp->auth, packet);
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break;
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}
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2010-04-02 20:48:44 +00:00
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/* fall through */
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2010-04-02 20:10:29 +00:00
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default:
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2010-04-02 03:33:03 +00:00
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lcp_protocol_reject(ppp->lcp, frame->bytes, frame->len);
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2010-04-02 20:48:44 +00:00
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break;
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2010-04-02 20:10:29 +00:00
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};
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2010-04-02 03:33:03 +00:00
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}
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/* XXX - Implement PFC and ACFC */
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static struct frame_buffer *ppp_decode(GAtPPP *ppp, guint8 *frame)
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{
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guint8 *data;
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guint pos;
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int i;
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guint16 fcs;
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struct frame_buffer *fb;
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fb = g_try_malloc0(sizeof(struct frame_buffer) + ppp->mru + 10);
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if (!fb)
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return NULL;
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data = fb->bytes;
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/* skip the first flag char */
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pos = 1;
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fcs = PPPINITFCS16;
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i = 0;
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while (frame[pos] != PPP_FLAG_SEQ) {
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2010-04-06 22:24:04 +00:00
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/* Skip the characters in receive ACCM */
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if (frame[pos] < 0x20 &&
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(ppp->recv_accm & (1 << frame[pos])) != 0) {
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pos++;
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continue;
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}
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2010-04-02 03:33:03 +00:00
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/* scan for escape character */
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if (frame[pos] == PPP_ESC) {
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/* skip that char */
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pos++;
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data[i] = frame[pos] ^ 0x20;
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} else
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data[i] = frame[pos];
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fcs = ppp_fcs(fcs, data[i]);
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i++; pos++;
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}
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fb->len = i;
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/* see if we have a good FCS */
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if (fcs != PPPGOODFCS16) {
|
|
|
|
g_free(fb);
|
|
|
|
return NULL;
|
|
|
|
}
|
|
|
|
|
|
|
|
return fb;
|
|
|
|
}
|
|
|
|
|
|
|
|
static void ppp_feed(GAtPPP *ppp, guint8 *data, gsize len)
|
|
|
|
{
|
|
|
|
guint pos = 0;
|
|
|
|
struct frame_buffer *frame;
|
|
|
|
|
|
|
|
/* collect bytes until we detect we have received a complete frame */
|
|
|
|
/* examine the data. If we are at the beginning of a new frame,
|
|
|
|
* allocate memory to buffer the frame.
|
|
|
|
*/
|
|
|
|
|
|
|
|
for (pos = 0; pos < len; pos++) {
|
|
|
|
if (data[pos] == PPP_FLAG_SEQ) {
|
|
|
|
if (ppp->index != 0) {
|
|
|
|
/* store last flag character & decode */
|
|
|
|
ppp->buffer[ppp->index++] = data[pos];
|
|
|
|
frame = ppp_decode(ppp, ppp->buffer);
|
2010-04-03 02:06:31 +00:00
|
|
|
if (frame) {
|
|
|
|
/* process receive frame */
|
|
|
|
ppp_recv(ppp, frame);
|
|
|
|
g_free(frame);
|
|
|
|
}
|
2010-04-02 03:33:03 +00:00
|
|
|
|
|
|
|
/* zero buffer */
|
|
|
|
memset(ppp->buffer, 0, BUFFERSZ);
|
|
|
|
ppp->index = 0;
|
|
|
|
continue;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
/* copy byte to buffer */
|
|
|
|
if (ppp->index < BUFFERSZ)
|
|
|
|
ppp->buffer[ppp->index++] = data[pos];
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
static void ppp_record(GAtPPP *ppp, gboolean in, guint8 *data, guint16 length)
|
|
|
|
{
|
|
|
|
guint16 len = htons(length);
|
|
|
|
guint32 ts;
|
|
|
|
struct timeval now;
|
|
|
|
unsigned char id;
|
|
|
|
int err;
|
|
|
|
|
|
|
|
if (ppp->record_fd < 0)
|
|
|
|
return;
|
|
|
|
|
|
|
|
gettimeofday(&now, NULL);
|
|
|
|
ts = htonl(now.tv_sec & 0xffffffff);
|
|
|
|
|
|
|
|
id = 0x07;
|
|
|
|
err = write(ppp->record_fd, &id, 1);
|
|
|
|
err = write(ppp->record_fd, &ts, 4);
|
|
|
|
|
|
|
|
id = in ? 0x02 : 0x01;
|
|
|
|
err = write(ppp->record_fd, &id, 1);
|
|
|
|
err = write(ppp->record_fd, &len, 2);
|
|
|
|
err = write(ppp->record_fd, data, length);
|
|
|
|
}
|
|
|
|
|
2010-04-02 03:40:39 +00:00
|
|
|
static gboolean ppp_cb(GIOChannel *channel, GIOCondition cond, gpointer data)
|
2010-04-02 03:33:03 +00:00
|
|
|
{
|
|
|
|
GAtPPP *ppp = data;
|
|
|
|
GIOStatus status;
|
|
|
|
gchar buf[256];
|
|
|
|
gsize bytes_read;
|
|
|
|
GError *error = NULL;
|
|
|
|
|
|
|
|
if (cond & (G_IO_NVAL | G_IO_ERR | G_IO_HUP))
|
|
|
|
return FALSE;
|
|
|
|
|
|
|
|
if (cond & G_IO_IN) {
|
|
|
|
status = g_io_channel_read_chars(channel, buf, 256,
|
|
|
|
&bytes_read, &error);
|
|
|
|
if (bytes_read > 0) {
|
|
|
|
ppp_record(ppp, TRUE, (guint8 *) buf, bytes_read);
|
|
|
|
ppp_feed(ppp, (guint8 *) buf, bytes_read);
|
|
|
|
}
|
|
|
|
if (status != G_IO_STATUS_NORMAL && status != G_IO_STATUS_AGAIN)
|
|
|
|
return FALSE;
|
|
|
|
}
|
|
|
|
|
|
|
|
return TRUE;
|
|
|
|
}
|
|
|
|
|
|
|
|
static void ppp_dead(GAtPPP *ppp)
|
|
|
|
{
|
2010-04-02 18:13:20 +00:00
|
|
|
if (ppp->write_watch)
|
|
|
|
return;
|
|
|
|
|
2010-04-02 03:33:03 +00:00
|
|
|
/* notify interested parties */
|
|
|
|
if (ppp->disconnect_cb)
|
|
|
|
ppp->disconnect_cb(ppp->disconnect_data);
|
|
|
|
|
|
|
|
if (g_atomic_int_get(&ppp->ref_count))
|
|
|
|
return;
|
|
|
|
|
2010-04-02 18:13:20 +00:00
|
|
|
/* cleanup queue */
|
|
|
|
g_queue_free(ppp->xmit_queue);
|
|
|
|
|
2010-04-02 03:33:03 +00:00
|
|
|
/* cleanup modem channel */
|
2010-04-02 18:13:20 +00:00
|
|
|
g_source_remove(ppp->read_watch);
|
|
|
|
g_source_remove(ppp->write_watch);
|
2010-04-02 03:33:03 +00:00
|
|
|
g_io_channel_unref(ppp->modem);
|
|
|
|
|
|
|
|
lcp_free(ppp->lcp);
|
|
|
|
auth_free(ppp->auth);
|
2010-04-02 17:42:04 +00:00
|
|
|
ipcp_free(ppp->ipcp);
|
|
|
|
ppp_net_free(ppp->net);
|
2010-04-02 03:33:03 +00:00
|
|
|
|
|
|
|
g_free(ppp);
|
|
|
|
}
|
|
|
|
|
|
|
|
static void ppp_transition_phase(GAtPPP *ppp, enum ppp_phase phase)
|
|
|
|
{
|
|
|
|
/* don't do anything if we're already there */
|
|
|
|
if (ppp->phase == phase)
|
|
|
|
return;
|
|
|
|
|
|
|
|
/* set new phase */
|
|
|
|
ppp->phase = phase;
|
|
|
|
|
|
|
|
switch (phase) {
|
|
|
|
case PPP_ESTABLISHMENT:
|
2010-04-02 03:40:39 +00:00
|
|
|
/* signal UP event to LCP */
|
|
|
|
lcp_establish(ppp->lcp);
|
2010-04-02 03:33:03 +00:00
|
|
|
break;
|
|
|
|
case PPP_AUTHENTICATION:
|
2010-04-02 03:40:39 +00:00
|
|
|
/* we don't do authentication right now, so send NONE */
|
2010-04-07 04:11:26 +00:00
|
|
|
if (ppp->auth->proto == 0)
|
2010-04-02 03:40:39 +00:00
|
|
|
ppp_generate_event(ppp, PPP_NONE);
|
|
|
|
/* otherwise we need to wait for the peer to send us a challenge */
|
2010-04-02 03:33:03 +00:00
|
|
|
break;
|
|
|
|
case PPP_TERMINATION:
|
2010-04-02 03:40:39 +00:00
|
|
|
lcp_terminate(ppp->lcp);
|
2010-04-02 03:33:03 +00:00
|
|
|
break;
|
|
|
|
case PPP_DEAD:
|
|
|
|
ppp_dead(ppp);
|
|
|
|
break;
|
|
|
|
case PPP_NETWORK:
|
2010-04-02 03:40:39 +00:00
|
|
|
/* bring network phase up */
|
|
|
|
ppp_net_open(ppp->net);
|
2010-04-05 18:05:08 +00:00
|
|
|
pppcp_signal_open(ppp->ipcp);
|
2010-04-02 03:33:03 +00:00
|
|
|
break;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* send the event handler a new event to process
|
|
|
|
*/
|
|
|
|
void ppp_generate_event(GAtPPP *ppp, enum ppp_event event)
|
|
|
|
{
|
|
|
|
switch (event) {
|
|
|
|
case PPP_UP:
|
|
|
|
/* causes transition to ppp establishment */
|
|
|
|
ppp_transition_phase(ppp, PPP_ESTABLISHMENT);
|
|
|
|
break;
|
|
|
|
case PPP_OPENED:
|
|
|
|
ppp_transition_phase(ppp, PPP_AUTHENTICATION);
|
|
|
|
break;
|
|
|
|
case PPP_CLOSING:
|
|
|
|
/* causes transition to termination phase */
|
|
|
|
ppp_transition_phase(ppp, PPP_TERMINATION);
|
|
|
|
break;
|
|
|
|
case PPP_DOWN:
|
|
|
|
/* cases transition to dead phase */
|
|
|
|
ppp_transition_phase(ppp, PPP_DEAD);
|
|
|
|
break;
|
|
|
|
case PPP_NONE:
|
|
|
|
case PPP_SUCCESS:
|
|
|
|
/* causes transition to network phase */
|
|
|
|
ppp_transition_phase(ppp, PPP_NETWORK);
|
|
|
|
break;
|
|
|
|
case PPP_FAIL:
|
|
|
|
if (ppp->phase == PPP_ESTABLISHMENT)
|
|
|
|
ppp_transition_phase(ppp, PPP_DEAD);
|
|
|
|
else if (ppp->phase == PPP_AUTHENTICATION)
|
|
|
|
ppp_transition_phase(ppp, PPP_TERMINATION);
|
2010-04-02 20:33:35 +00:00
|
|
|
break;
|
2010-04-02 03:33:03 +00:00
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
void ppp_set_auth(GAtPPP *ppp, guint8* auth_data)
|
|
|
|
{
|
|
|
|
guint16 proto = get_host_short(auth_data);
|
|
|
|
|
|
|
|
switch (proto) {
|
|
|
|
case CHAP_PROTOCOL:
|
|
|
|
/* get the algorithm */
|
|
|
|
auth_set_proto(ppp->auth, proto, auth_data[2]);
|
|
|
|
break;
|
|
|
|
default:
|
|
|
|
g_printerr("unknown authentication proto\n");
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
void ppp_set_recv_accm(GAtPPP *ppp, guint32 accm)
|
|
|
|
{
|
|
|
|
ppp->recv_accm = accm;
|
|
|
|
}
|
|
|
|
|
2010-04-07 03:45:14 +00:00
|
|
|
void ppp_set_xmit_accm(GAtPPP *ppp, guint32 accm)
|
2010-04-02 03:33:03 +00:00
|
|
|
{
|
2010-04-07 03:45:14 +00:00
|
|
|
ppp->xmit_accm[0] = accm;
|
2010-04-02 03:33:03 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
void ppp_set_pfc(GAtPPP *ppp, gboolean pfc)
|
|
|
|
{
|
|
|
|
ppp->pfc = pfc;
|
|
|
|
}
|
|
|
|
|
|
|
|
gboolean ppp_get_pfc(GAtPPP *ppp)
|
|
|
|
{
|
|
|
|
return ppp->pfc;
|
|
|
|
}
|
|
|
|
|
|
|
|
void ppp_set_acfc(GAtPPP *ppp, gboolean acfc)
|
|
|
|
{
|
|
|
|
ppp->acfc = acfc;
|
|
|
|
}
|
|
|
|
|
|
|
|
gboolean ppp_get_acfc(GAtPPP *ppp)
|
|
|
|
{
|
|
|
|
return ppp->acfc;
|
|
|
|
}
|
|
|
|
|
2010-03-23 00:05:56 +00:00
|
|
|
/* Administrative Open */
|
|
|
|
void g_at_ppp_open(GAtPPP *ppp)
|
|
|
|
{
|
|
|
|
/* send an OPEN event to the lcp layer */
|
2010-03-23 00:05:58 +00:00
|
|
|
lcp_open(ppp->lcp);
|
2010-03-23 00:05:56 +00:00
|
|
|
}
|
|
|
|
|
2010-03-23 00:05:59 +00:00
|
|
|
void g_at_ppp_set_credentials(GAtPPP *ppp, const char *username,
|
2010-04-01 20:47:25 +00:00
|
|
|
const char *passwd)
|
2010-03-23 00:05:59 +00:00
|
|
|
{
|
|
|
|
auth_set_credentials(ppp->auth, username, passwd);
|
|
|
|
}
|
|
|
|
|
2010-03-31 23:45:17 +00:00
|
|
|
void g_at_ppp_set_connect_function(GAtPPP *ppp, GAtPPPConnectFunc func,
|
2010-04-01 20:11:11 +00:00
|
|
|
gpointer user_data)
|
2010-03-23 00:05:56 +00:00
|
|
|
{
|
2010-03-31 23:45:17 +00:00
|
|
|
if (func == NULL)
|
|
|
|
return;
|
|
|
|
|
|
|
|
ppp->connect_cb = func;
|
2010-03-23 00:05:56 +00:00
|
|
|
ppp->connect_data = user_data;
|
|
|
|
}
|
|
|
|
|
2010-03-31 23:47:30 +00:00
|
|
|
void g_at_ppp_set_disconnect_function(GAtPPP *ppp, GAtDisconnectFunc func,
|
2010-04-01 20:11:11 +00:00
|
|
|
gpointer user_data)
|
2010-03-23 00:05:56 +00:00
|
|
|
{
|
2010-03-31 23:47:30 +00:00
|
|
|
if (func == NULL)
|
|
|
|
return;
|
|
|
|
|
|
|
|
ppp->disconnect_cb = func;
|
2010-03-23 00:05:56 +00:00
|
|
|
ppp->disconnect_data = user_data;
|
|
|
|
}
|
|
|
|
|
2010-04-01 20:11:11 +00:00
|
|
|
void g_at_ppp_set_debug(GAtPPP *ppp, GAtDebugFunc func, gpointer user_data)
|
|
|
|
{
|
|
|
|
if (ppp == NULL)
|
|
|
|
return;
|
|
|
|
|
|
|
|
ppp->debugf = func;
|
|
|
|
ppp->debug_data = user_data;
|
|
|
|
}
|
|
|
|
|
2010-04-01 20:47:25 +00:00
|
|
|
void g_at_ppp_set_recording(GAtPPP *ppp, const char *filename)
|
|
|
|
{
|
|
|
|
if (ppp == NULL)
|
|
|
|
return;
|
|
|
|
|
|
|
|
if (ppp->record_fd > fileno(stderr))
|
|
|
|
close(ppp->record_fd);
|
|
|
|
|
|
|
|
if (filename == NULL)
|
|
|
|
return;
|
|
|
|
|
|
|
|
ppp->record_fd = open(filename, O_WRONLY | O_CREAT | O_APPEND,
|
|
|
|
S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH);
|
|
|
|
}
|
|
|
|
|
2010-03-23 00:05:56 +00:00
|
|
|
void g_at_ppp_shutdown(GAtPPP *ppp)
|
|
|
|
{
|
2010-04-02 17:28:18 +00:00
|
|
|
ppp_generate_event(ppp, PPP_CLOSING);
|
2010-03-23 00:05:56 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
void g_at_ppp_ref(GAtPPP *ppp)
|
|
|
|
{
|
|
|
|
g_atomic_int_inc(&ppp->ref_count);
|
|
|
|
}
|
|
|
|
|
|
|
|
void g_at_ppp_unref(GAtPPP *ppp)
|
|
|
|
{
|
2010-03-25 04:41:54 +00:00
|
|
|
if (g_atomic_int_dec_and_test(&ppp->ref_count))
|
2010-03-23 00:05:56 +00:00
|
|
|
g_at_ppp_shutdown(ppp);
|
2010-03-25 04:41:54 +00:00
|
|
|
|
|
|
|
/*
|
|
|
|
* we can't free the link yet, because we need to terminate
|
|
|
|
* the link first.
|
|
|
|
*/
|
2010-04-01 20:47:25 +00:00
|
|
|
|
|
|
|
if (ppp->record_fd > fileno(stderr))
|
|
|
|
close(ppp->record_fd);
|
2010-03-23 00:05:56 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
GAtPPP *g_at_ppp_new(GIOChannel *modem)
|
|
|
|
{
|
|
|
|
GAtPPP *ppp;
|
|
|
|
|
|
|
|
ppp = g_try_malloc0(sizeof(GAtPPP));
|
|
|
|
if (!ppp)
|
|
|
|
return NULL;
|
|
|
|
|
|
|
|
ppp->modem = g_io_channel_ref(modem);
|
|
|
|
if (!g_at_util_setup_io(ppp->modem, G_IO_FLAG_NONBLOCK)) {
|
|
|
|
g_io_channel_unref(modem);
|
|
|
|
g_free(ppp);
|
|
|
|
return NULL;
|
|
|
|
}
|
|
|
|
g_io_channel_set_buffered(modem, FALSE);
|
|
|
|
|
|
|
|
ppp->ref_count = 1;
|
|
|
|
|
|
|
|
/* set options to defaults */
|
|
|
|
ppp->mru = DEFAULT_MRU;
|
2010-04-06 22:24:04 +00:00
|
|
|
ppp->recv_accm = ~0U;
|
2010-04-07 03:45:14 +00:00
|
|
|
ppp->xmit_accm[0] = ~0U;
|
2010-03-23 00:05:56 +00:00
|
|
|
ppp->xmit_accm[3] = 0x60000000; /* 0x7d, 0x7e */
|
|
|
|
ppp->pfc = FALSE;
|
|
|
|
ppp->acfc = FALSE;
|
|
|
|
|
|
|
|
ppp->index = 0;
|
|
|
|
|
2010-04-02 18:13:20 +00:00
|
|
|
/* intialize the queue */
|
|
|
|
ppp->xmit_queue = g_queue_new();
|
|
|
|
|
2010-03-23 00:05:56 +00:00
|
|
|
/* initialize the lcp state */
|
2010-03-23 00:05:58 +00:00
|
|
|
ppp->lcp = lcp_new(ppp);
|
2010-03-23 00:05:56 +00:00
|
|
|
|
|
|
|
/* initialize the autentication state */
|
2010-03-23 00:05:59 +00:00
|
|
|
ppp->auth = auth_new(ppp);
|
2010-03-23 00:05:56 +00:00
|
|
|
|
2010-04-02 17:42:04 +00:00
|
|
|
/* initialize IPCP state */
|
|
|
|
ppp->ipcp = ipcp_new(ppp);
|
|
|
|
|
2010-03-23 00:05:56 +00:00
|
|
|
/* intialize the network state */
|
2010-03-23 00:06:00 +00:00
|
|
|
ppp->net = ppp_net_new(ppp);
|
2010-03-23 00:05:56 +00:00
|
|
|
|
|
|
|
/* start listening for packets from the modem */
|
2010-04-02 18:13:20 +00:00
|
|
|
ppp->read_watch = g_io_add_watch(modem,
|
2010-03-23 00:05:56 +00:00
|
|
|
G_IO_IN | G_IO_HUP | G_IO_ERR | G_IO_NVAL,
|
|
|
|
ppp_cb, ppp);
|
|
|
|
|
2010-04-01 20:47:25 +00:00
|
|
|
ppp->record_fd = -1;
|
|
|
|
|
2010-03-23 00:05:56 +00:00
|
|
|
return ppp;
|
|
|
|
}
|
2010-04-02 18:13:20 +00:00
|
|
|
|
|
|
|
static gboolean ppp_xmit_cb(GIOChannel *channel, GIOCondition cond,
|
|
|
|
gpointer data)
|
|
|
|
{
|
|
|
|
GAtPPP *ppp = data;
|
|
|
|
struct frame_buffer *fb;
|
|
|
|
GError *error = NULL;
|
|
|
|
GIOStatus status;
|
|
|
|
gsize bytes_written;
|
|
|
|
|
|
|
|
if (cond & (G_IO_NVAL | G_IO_HUP | G_IO_ERR))
|
|
|
|
return FALSE;
|
|
|
|
|
|
|
|
if (cond & G_IO_OUT) {
|
|
|
|
while ((fb = g_queue_peek_head(ppp->xmit_queue))) {
|
|
|
|
status = g_io_channel_write_chars(ppp->modem,
|
|
|
|
(gchar *) fb->bytes, fb->len,
|
2010-04-02 20:34:10 +00:00
|
|
|
&bytes_written, &error);
|
2010-04-02 18:13:20 +00:00
|
|
|
if (status != G_IO_STATUS_NORMAL &&
|
|
|
|
status != G_IO_STATUS_AGAIN)
|
|
|
|
return FALSE;
|
|
|
|
|
|
|
|
if (bytes_written < fb->len)
|
|
|
|
return TRUE;
|
|
|
|
|
|
|
|
ppp_record(ppp, FALSE, fb->bytes, bytes_written);
|
|
|
|
g_free(g_queue_pop_head(ppp->xmit_queue));
|
|
|
|
}
|
|
|
|
}
|
|
|
|
return FALSE;
|
|
|
|
}
|
|
|
|
|
|
|
|
static void ppp_xmit_destroy_notify(gpointer destroy_data)
|
|
|
|
{
|
|
|
|
GAtPPP *ppp = destroy_data;
|
|
|
|
|
|
|
|
g_print("%s\n", __FUNCTION__);
|
|
|
|
|
|
|
|
ppp->write_watch = 0;
|
|
|
|
if (ppp->phase == PPP_DEAD)
|
|
|
|
ppp_dead(ppp);
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* transmit out through the lower layer interface
|
|
|
|
*
|
|
|
|
* infolen - length of the information part of the packet
|
|
|
|
*/
|
|
|
|
void ppp_transmit(GAtPPP *ppp, guint8 *packet, guint infolen)
|
|
|
|
{
|
|
|
|
struct frame_buffer *fb;
|
|
|
|
|
|
|
|
/*
|
|
|
|
* do the octet stuffing. Add 2 bytes to the infolen to
|
|
|
|
* include the protocol field.
|
|
|
|
*/
|
|
|
|
fb = ppp_encode(ppp, packet, infolen + 2);
|
|
|
|
if (!fb) {
|
|
|
|
g_printerr("Failed to encode packet to transmit\n");
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
/* push decoded frame onto xmit queue */
|
|
|
|
g_queue_push_tail(ppp->xmit_queue, fb);
|
|
|
|
|
|
|
|
/* transmit this whenever we can write without blocking */
|
|
|
|
ppp->write_watch = g_io_add_watch_full(ppp->modem, G_PRIORITY_DEFAULT,
|
|
|
|
G_IO_OUT | G_IO_HUP | G_IO_ERR | G_IO_NVAL,
|
|
|
|
ppp_xmit_cb, ppp, ppp_xmit_destroy_notify);
|
|
|
|
}
|