00001 /* 00002 * Copyright (C) 2001-2003 by egnite Software GmbH. All rights reserved. 00003 * 00004 * Redistribution and use in source and binary forms, with or without 00005 * modification, are permitted provided that the following conditions 00006 * are met: 00007 * 00008 * 1. Redistributions of source code must retain the above copyright 00009 * notice, this list of conditions and the following disclaimer. 00010 * 2. Redistributions in binary form must reproduce the above copyright 00011 * notice, this list of conditions and the following disclaimer in the 00012 * documentation and/or other materials provided with the distribution. 00013 * 3. Neither the name of the copyright holders nor the names of 00014 * contributors may be used to endorse or promote products derived 00015 * from this software without specific prior written permission. 00016 * 00017 * THIS SOFTWARE IS PROVIDED BY EGNITE SOFTWARE GMBH AND CONTRIBUTORS 00018 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 00019 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 00020 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL EGNITE 00021 * SOFTWARE GMBH OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, 00022 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 00023 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS 00024 * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 00025 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 00026 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF 00027 * THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 00028 * SUCH DAMAGE. 00029 * 00030 * For additional information see http://www.ethernut.de/ 00031 * 00032 * - 00033 * Portions are 00034 * Copyright (c) 1989 by Carnegie Mellon University. 00035 * All rights reserved. 00036 * 00037 * Redistribution and use in source and binary forms are permitted 00038 * provided that the above copyright notice and this paragraph are 00039 * duplicated in all such forms and that any documentation, 00040 * advertising materials, and other materials related to such 00041 * distribution and use acknowledge that the software was developed 00042 * by Carnegie Mellon University. The name of the 00043 * University may not be used to endorse or promote products derived 00044 * from this software without specific prior written permission. 00045 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR 00046 * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED 00047 * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE. 00048 */ 00049 00050 /* 00051 * $Log: papin.c,v $ 00052 * Revision 1.2 2005/04/08 15:20:51 olereinhardt 00053 * added <sys/types.h> (__APPLE__) and <netinet/in.h> (__linux__) 00054 * for htons and simmilar. 00055 * 00056 * Revision 1.1.1.1 2003/05/09 14:41:35 haraldkipp 00057 * Initial using 3.2.1 00058 * 00059 * Revision 1.2 2003/05/06 18:16:41 harald 00060 * PPP IP config to DCB 00061 * 00062 * Revision 1.1 2003/03/31 14:53:28 harald 00063 * Prepare release 3.1 00064 * 00065 */ 00066 00067 #include <dev/ppp.h> 00068 #include <sys/types.h> 00069 #include <net/if_var.h> 00070 #include <netinet/if_ppp.h> 00071 #include <netinet/ppp_fsm.h> 00072 #include <netinet/in.h> 00078 00079 00080 /* 00081 * No server support. 00082 */ 00083 void PapRxAuthReq(NUTDEVICE *dev, u_char id, NETBUF *nb) 00084 { 00085 NutPapOutput(dev, XCP_CONFACK, id, nb); 00086 } 00087 00088 void PapRxAuthAck(NUTDEVICE *dev, u_char id, NETBUF *nb) 00089 { 00090 PPPDCB *dcb = dev->dev_dcb; 00091 00092 if(dcb->dcb_auth_state == PAPCS_AUTHREQ) { 00093 /* 00094 * Flag us open and start the network. 00095 */ 00096 dcb->dcb_auth_state = PAPCS_OPEN; 00097 IpcpLowerUp(dev); 00098 } 00099 } 00100 00101 void PapRxAuthNak(NUTDEVICE *dev, u_char id, NETBUF *nb) 00102 { 00103 PPPDCB *dcb = dev->dev_dcb; 00104 00105 if(dcb->dcb_auth_state == PAPCS_AUTHREQ) { 00106 dcb->dcb_auth_state = PAPCS_BADAUTH; 00107 IpcpLowerDown(dev); 00108 } 00109 } 00110 00119 void NutPapInput(NUTDEVICE * dev, NETBUF * nb) 00120 { 00121 XCPHDR *pap; 00122 u_short len; 00123 00124 /* 00125 * Drop packets with illegal lengths. 00126 */ 00127 if (nb->nb_nw.sz < sizeof(XCPHDR)) { 00128 NutNetBufFree(nb); 00129 return; 00130 } 00131 pap = (XCPHDR *) nb->nb_nw.vp; 00132 if ((len = htons(pap->xch_len)) < sizeof(XCPHDR) || len > nb->nb_nw.sz) { 00133 NutNetBufFree(nb); 00134 return; 00135 } 00136 00137 /* 00138 * Split the PAP packet. 00139 */ 00140 nb->nb_ap.vp = pap + 1; 00141 nb->nb_ap.sz = htons(pap->xch_len) - sizeof(XCPHDR); 00142 00143 /* 00144 * Action depends on code. 00145 */ 00146 switch (pap->xch_code) { 00147 case XCP_CONFREQ: 00148 PapRxAuthReq(dev, pap->xch_id, nb); 00149 break; 00150 00151 case XCP_CONFACK: 00152 PapRxAuthAck(dev, pap->xch_id, nb); 00153 break; 00154 00155 case XCP_CONFNAK: 00156 PapRxAuthNak(dev, pap->xch_id, nb); 00157 break; 00158 00159 default: 00160 break; 00161 } 00162 NutNetBufFree(nb); 00163 } 00164