mirror of git://git.sysmocom.de/ofono
155 lines
3.8 KiB
C
155 lines
3.8 KiB
C
/*
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*
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* PPP library with GLib integration
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*
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* Copyright (C) 2009-2010 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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#include "ppp_cp.h"
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#define DEFAULT_MRU 1500
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#define BUFFERSZ DEFAULT_MRU*2
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#define DEFAULT_ACCM 0x00000000
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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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#define LCP_PROTOCOL 0xc021
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#define CHAP_PROTOCOL 0xc223
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#define PPP_HEADROOM 2
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#define HDLC_HEADROOM 3
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#define HDLC_TAIL 3
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#define MD5 5
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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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enum ppp_event {
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PPP_UP = 1,
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PPP_OPENED,
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PPP_SUCCESS,
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PPP_NONE,
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PPP_CLOSING,
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PPP_FAIL,
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PPP_DOWN
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};
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struct ppp_packet_handler {
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guint16 proto;
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void (*handler)(gpointer priv, guint8 *packet);
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gpointer priv;
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};
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struct ppp_header {
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guint16 proto;
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guint8 info[0];
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} __attribute__((packed));
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struct packed_short {
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guint16 s;
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} __attribute__((packed));
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struct packed_long {
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guint32 l;
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} __attribute__((packed));
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static inline guint32 __get_unaligned_long(const gpointer p)
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{
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const struct packed_long *ptr = p;
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return ptr->l;
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}
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static inline guint16 __get_unaligned_short(const gpointer p)
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{
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const struct packed_short *ptr = p;
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return ptr->s;
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}
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#define get_host_long(p) \
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(ntohl(__get_unaligned_long(p)))
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#define get_host_short(p) \
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(ntohs(__get_unaligned_short(p)))
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#define ppp_info(packet) \
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(packet + 4)
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#define ppp_proto(packet) \
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(get_host_short(packet + 2))
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struct auth_data {
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guint16 proto;
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gpointer proto_data;
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void (*process_packet)(struct auth_data *data, guint8 *packet);
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char *username;
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char *passwd;
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GAtPPP *ppp;
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};
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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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guint8 buffer[BUFFERSZ];
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int index;
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gint mru;
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guint16 auth_proto;
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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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GQueue *event_queue;
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GQueue *recv_queue;
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GAtPPPConnectFunc connect_cb;
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gpointer connect_data;
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GAtPPPDisconnectFunc disconnect_cb;
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gpointer disconnect_data;
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gint modem_watch;
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};
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gboolean ppp_cb(GIOChannel *channel, GIOCondition cond, gpointer data);
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void ppp_close(GAtPPP *ppp);
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void ppp_generate_event(GAtPPP *ppp, enum ppp_event event);
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void ppp_register_packet_handler(struct ppp_packet_handler *handler);
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void ppp_transmit(GAtPPP *ppp, guint8 *packet, guint infolen);
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void ppp_set_auth(GAtPPP *ppp, guint8 *auth_data);
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void ppp_set_recv_accm(GAtPPP *ppp, guint32 accm);
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guint32 ppp_get_xmit_accm(GAtPPP *ppp);
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void ppp_set_pfc(GAtPPP *ppp, gboolean pfc);
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gboolean ppp_get_pfc(GAtPPP *ppp);
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void ppp_set_acfc(GAtPPP *ppp, gboolean acfc);
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gboolean ppp_get_acfc(GAtPPP *ppp);
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struct pppcp_data * lcp_new(GAtPPP *ppp);
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void lcp_free(struct pppcp_data *lcp);
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void lcp_open(struct pppcp_data *data);
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void lcp_close(struct pppcp_data *data);
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void lcp_establish(struct pppcp_data *data);
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void lcp_terminate(struct pppcp_data *data);
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void auth_set_credentials(struct auth_data *data, const char *username,
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const char *passwd);
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void auth_set_proto(struct auth_data *data, guint16 proto, guint8 method);
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struct auth_data *auth_new(GAtPPP *ppp);
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void auth_free(struct auth_data *auth);
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