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<DIV class=fragment><PRE>00001 <SPAN class=comment>/*</SPAN>
00002 <SPAN class=comment>ItaliOs</SPAN>
00003 <SPAN class=comment>This program is free software; you can redistribute it and/or</SPAN>
00004 <SPAN class=comment>modify it under the terms of the GNU General Public License</SPAN>
00005 <SPAN class=comment>as published by the Free Software Foundation; either version 2</SPAN>
00006 <SPAN class=comment>of the License, or (at your option) any later version.</SPAN>
00007 <SPAN class=comment></SPAN>
00008 <SPAN class=comment>This program is distributed in the hope that it will be useful,</SPAN>
00009 <SPAN class=comment>but WITHOUT ANY WARRANTY; without even the implied warranty of</SPAN>
00010 <SPAN class=comment>MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the</SPAN>
00011 <SPAN class=comment>GNU General Public License for more details.</SPAN>
00012 <SPAN class=comment></SPAN>
00013 <SPAN class=comment>You should have received a copy of the GNU General Public License</SPAN>
00014 <SPAN class=comment>along with this program; if not, write to the Free Software</SPAN>
00015 <SPAN class=comment>Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.</SPAN>
00016 <SPAN class=comment>*/</SPAN>
00017
00018
00019 <SPAN class=comment>/* ppp.c: by miki00</SPAN>
00020 <SPAN class=comment></SPAN>
00021 <SPAN class=comment></SPAN>
00022 <SPAN class=comment> 0x7f,0xff,0x03,protocol[2]</SPAN>
00023 <SPAN class=comment></SPAN>
00024 <SPAN class=comment></SPAN>
00025 <SPAN class=comment> status: PAP,</SPAN>
00026 <SPAN class=comment></SPAN>
00027 <SPAN class=comment></SPAN>
00028 <SPAN class=comment>#include "io.h"</SPAN>
00029 <SPAN class=comment>*/</SPAN>
00030 <SPAN class=preprocessor>#define r_PPP</SPAN>
00031 <SPAN class=preprocessor></SPAN><SPAN class=preprocessor>#include "<A class=code href="http://www.italios.it/os1/net_2rete_8h.html">rete.h</A>"</SPAN>
00032
00033 <SPAN class=preprocessor>#define ppp_flag (u_char)*ppp</SPAN>
00034 <SPAN class=preprocessor></SPAN><SPAN class=preprocessor>#define ppp_addr (u_char)*(ppp+1)</SPAN>
00035 <SPAN class=preprocessor></SPAN><SPAN class=preprocessor>#define ppp_control (u_char)*(ppp+2)</SPAN>
00036 <SPAN class=preprocessor></SPAN><SPAN class=preprocessor>#define ppp_proto *(u_short *)(ppp+3)</SPAN>
00037 <SPAN class=preprocessor></SPAN><SPAN class=preprocessor>#define ppp_code (u_char)*(ppp+5)</SPAN>
00038 <SPAN class=preprocessor></SPAN><SPAN class=preprocessor>#define ppp_id (u_char)*(ppp+6)</SPAN>
00039 <SPAN class=preprocessor></SPAN><SPAN class=preprocessor>#define ppp_len *(u_short *)(ppp+7)</SPAN>
00040 <SPAN class=preprocessor></SPAN><SPAN class=preprocessor>#define ppp_dati (ppp+9)</SPAN>
00041 <SPAN class=preprocessor></SPAN><SPAN class=preprocessor>#define ppp_fcs *(u_short *)(ppp+scbyte(ppp_len)+5)</SPAN>
00042 <SPAN class=preprocessor></SPAN>
00043 <SPAN class=preprocessor>#define ppplog_addr (u_char)*(ppplog+1)</SPAN>
00044 <SPAN class=preprocessor></SPAN><SPAN class=preprocessor>#define ppplog_control (u_char)*(ppplog+2)</SPAN>
00045 <SPAN class=preprocessor></SPAN><SPAN class=preprocessor>#define ppplog_proto *(u_short *)(ppplog+3)</SPAN>
00046 <SPAN class=preprocessor></SPAN><SPAN class=preprocessor>#define ppplog_code (u_char)*(ppplog+5)</SPAN>
00047 <SPAN class=preprocessor></SPAN><SPAN class=preprocessor>#define ppplog_id (u_char)*(ppplog+6)</SPAN>
00048 <SPAN class=preprocessor></SPAN><SPAN class=preprocessor>#define ppplog_len *(u_short *)(ppplog+7)</SPAN>
00049 <SPAN class=preprocessor></SPAN><SPAN class=preprocessor>#define ppplog_dati (ppplog+9)</SPAN>
00050 <SPAN class=preprocessor></SPAN><SPAN class=preprocessor>#define ppplog_fcs *(u_short *)(ppplog+scbyte(ppplog_len)+5)</SPAN>
00051 <SPAN class=preprocessor></SPAN>
00052 <SPAN class=preprocessor>#define pppout_flag (u_char)*pppout</SPAN>
00053 <SPAN class=preprocessor></SPAN><SPAN class=preprocessor>#define pppout_addr (u_char)*(pppout+1)</SPAN>
00054 <SPAN class=preprocessor></SPAN><SPAN class=preprocessor>#define pppout_control (u_char)*(pppout+2)</SPAN>
00055 <SPAN class=preprocessor></SPAN><SPAN class=preprocessor>#define pppout_proto *(u_short *)(pppout+3)</SPAN>
00056 <SPAN class=preprocessor></SPAN><SPAN class=preprocessor>#define pppout_code (u_char)*(pppout+5)</SPAN>
00057 <SPAN class=preprocessor></SPAN><SPAN class=preprocessor>#define pppout_id (u_char)*(pppout+6)</SPAN>
00058 <SPAN class=preprocessor></SPAN><SPAN class=preprocessor>#define pppout_len *(u_short *)(pppout+7)</SPAN>
00059 <SPAN class=preprocessor></SPAN><SPAN class=preprocessor>#define pppout_dati (pppout+9)</SPAN>
00060 <SPAN class=preprocessor></SPAN><SPAN class=preprocessor>#define pppout_fcs *(u_short *)(pppout+scbyte(pppout_len)+5)</SPAN>
00061 <SPAN class=preprocessor></SPAN>
00062 <SPAN class=preprocessor>#define IP_LUNGH scbyte(*(u_short *)(pppout+7))</SPAN>
00063 <SPAN class=preprocessor></SPAN>
00064 <SPAN class=preprocessor>#ifndef stderr</SPAN>
00065 <SPAN class=preprocessor></SPAN><SPAN class=preprocessor>#define stderr stdout </SPAN>
00066 <SPAN class=preprocessor></SPAN><SPAN class=preprocessor>#endif</SPAN>
00067 <SPAN class=preprocessor></SPAN>
00068 <SPAN class=comment>/*</SPAN>
00069 <SPAN class=comment>#define Log nlog+=snprintf(log+nlog,200,</SPAN>
00070 <SPAN class=comment>#define Scrivilog {printf("%s\n",log);nlog=0;}</SPAN>
00071 <SPAN class=comment>*/</SPAN>
00072 <SPAN class=preprocessor>#define Log printf(</SPAN>
00073 <SPAN class=preprocessor></SPAN><SPAN class=preprocessor>#define Scrivilog printf("\n");</SPAN>
00074 <SPAN class=preprocessor></SPAN>
00075 <SPAN class=keywordtype>int</SPAN> t;
00076
00077 u_int PPPtimeout=0;
00078
00079 <SPAN class=comment>/* u_char F_PPP=0; */</SPAN>
00080 u_char lastCH=0;
00081 u_char *ppp,*pppout,*ppplog;
00082 u_char *buff=0;
00083 u_char *buffRX=0;
00084 u_short buffRX1,buffRX2=0;
00085 <SPAN class=keywordtype>int</SPAN> punta[]={-1,-1,-1,-1,-1,-1,-1,-1,-1,-1},npunta=0,npunta2=0,puntaP=-1;
00086 <SPAN class=keywordtype>char</SPAN> log[200],nlog=0,CLK=0;
00087 u_int stato=0;
00088 u_int IPlocale,IPremoto;
00089 u_int IPDNS1,IPDNS2;
00090 u_int asyncmap=0xffffffff,asyncmap2;
00091 u_char *bufTX=0;
00092 u_short bufTX1,bufTX2=0;
00093 u_int ritorno;
00094 u_char ppp_confack,ppp_confnack,ppp_confrej;
00095 <SPAN class=keyword>extern</SPAN> u_char asyncmapno;
00096
00097 <SPAN class=keyword>static</SPAN> <SPAN class=keywordtype>unsigned</SPAN> <SPAN class=keywordtype>short</SPAN> fcstab[256] = {
00098 0x0000, 0x1189, 0x2312, 0x329b, 0x4624, 0x57ad, 0x6536, 0x74bf,
00099 0x8c48, 0x9dc1, 0xaf5a, 0xbed3, 0xca6c, 0xdbe5, 0xe97e, 0xf8f7,
00100 0x1081, 0x0108, 0x3393, 0x221a, 0x56a5, 0x472c, 0x75b7, 0x643e,
00101 0x9cc9, 0x8d40, 0xbfdb, 0xae52, 0xdaed, 0xcb64, 0xf9ff, 0xe876,
00102 0x2102, 0x308b, 0x0210, 0x1399, 0x6726, 0x76af, 0x4434, 0x55bd,
00103 0xad4a, 0xbcc3, 0x8e58, 0x9fd1, 0xeb6e, 0xfae7, 0xc87c, 0xd9f5,
00104 0x3183, 0x200a, 0x1291, 0x0318, 0x77a7, 0x662e, 0x54b5, 0x453c,
00105 0xbdcb, 0xac42, 0x9ed9, 0x8f50, 0xfbef, 0xea66, 0xd8fd, 0xc974,
00106 0x4204, 0x538d, 0x6116, 0x709f, 0x0420, 0x15a9, 0x2732, 0x36bb,
00107 0xce4c, 0xdfc5, 0xed5e, 0xfcd7, 0x8868, 0x99e1, 0xab7a, 0xbaf3,
00108 0x5285, 0x430c, 0x7197, 0x601e, 0x14a1, 0x0528, 0x37b3, 0x263a,
00109 0xdecd, 0xcf44, 0xfddf, 0xec56, 0x98e9, 0x8960, 0xbbfb, 0xaa72,
00110 0x6306, 0x728f, 0x4014, 0x519d, 0x2522, 0x34ab, 0x0630, 0x17b9,
00111 0xef4e, 0xfec7, 0xcc5c, 0xddd5, 0xa96a, 0xb8e3, 0x8a78, 0x9bf1,
00112 0x7387, 0x620e, 0x5095, 0x411c, 0x35a3, 0x242a, 0x16b1, 0x0738,
00113 0xffcf, 0xee46, 0xdcdd, 0xcd54, 0xb9eb, 0xa862, 0x9af9, 0x8b70,
00114 0x8408, 0x9581, 0xa71a, 0xb693, 0xc22c, 0xd3a5, 0xe13e, 0xf0b7,
00115 0x0840, 0x19c9, 0x2b52, 0x3adb, 0x4e64, 0x5fed, 0x6d76, 0x7cff,
00116 0x9489, 0x8500, 0xb79b, 0xa612, 0xd2ad, 0xc324, 0xf1bf, 0xe036,
00117 0x18c1, 0x0948, 0x3bd3, 0x2a5a, 0x5ee5, 0x4f6c, 0x7df7, 0x6c7e,
00118 0xa50a, 0xb483, 0x8618, 0x9791, 0xe32e, 0xf2a7, 0xc03c, 0xd1b5,
00119 0x2942, 0x38cb, 0x0a50, 0x1bd9, 0x6f66, 0x7eef, 0x4c74, 0x5dfd,
00120 0xb58b, 0xa402, 0x9699, 0x8710, 0xf3af, 0xe226, 0xd0bd, 0xc134,
00121 0x39c3, 0x284a, 0x1ad1, 0x0b58, 0x7fe7, 0x6e6e, 0x5cf5, 0x4d7c,
00122 0xc60c, 0xd785, 0xe51e, 0xf497, 0x8028, 0x91a1, 0xa33a, 0xb2b3,
00123 0x4a44, 0x5bcd, 0x6956, 0x78df, 0x0c60, 0x1de9, 0x2f72, 0x3efb,
00124 0xd68d, 0xc704, 0xf59f, 0xe416, 0x90a9, 0x8120, 0xb3bb, 0xa232,
00125 0x5ac5, 0x4b4c, 0x79d7, 0x685e, 0x1ce1, 0x0d68, 0x3ff3, 0x2e7a,
00126 0xe70e, 0xf687, 0xc41c, 0xd595, 0xa12a, 0xb0a3, 0x8238, 0x93b1,
00127 0x6b46, 0x7acf, 0x4854, 0x59dd, 0x2d62, 0x3ceb, 0x0e70, 0x1ff9,
00128 0xf78f, 0xe606, 0xd49d, 0xc514, 0xb1ab, 0xa022, 0x92b9, 0x8330,
00129 0x7bc7, 0x6a4e, 0x58d5, 0x495c, 0x3de3, 0x2c6a, 0x1ef1, 0x0f78
00130 };
00131
00132 u_char leggiPPP() { <SPAN class=comment>/* funzione che legge e marca un frame in Rx */</SPAN>
00133 u_char ch;
00134 ch=((ritorno=leggibyteseriale())&0xff);<SPAN class=comment>/* leggibyte da seriale */</SPAN>
00135 <SPAN class=keywordflow>if</SPAN> (ritorno!=NO_DATA) { <SPAN class=comment>/* se e' stato letto un byte */</SPAN>
00136 <SPAN class=keywordflow>if</SPAN> (ch==0x7e) { <SPAN class=comment>/* se e' un flag */</SPAN>
00137 <SPAN class=keywordflow>if</SPAN> (lastCH!=0x7e) <SPAN class=comment>/* se il penultimo byte non e' un flag */</SPAN>
00138 <SPAN class=keywordflow>if</SPAN> (puntaP>=0) { <SPAN class=comment>/* se e' un frame completo */</SPAN>
00139 punta[npunta]=puntaP; <SPAN class=comment>/* allora trasmetti */</SPAN>
00140 npunta=(npunta+1)%10;
00141 }
00142 <SPAN class=keywordflow>if</SPAN> (buffRX2>(10000-3000)) buffRX2=0;
00143 puntaP=buffRX2; <SPAN class=comment>/* marca frame successivo */</SPAN>
00144 }
00145 <SPAN class=keywordflow>if</SPAN> (ch==0x7d) { <SPAN class=comment>/* se e' un codice di escape */</SPAN>
00146 <SPAN class=keywordflow>while</SPAN> ((ritorno=leggibyteseriale())==NO_DATA);
00147 ch=(ritorno&0xff)^0x20; <SPAN class=comment>/* leggi il prox byte e fai xor 0x20 */</SPAN>
00148 }
00149 buffRX[buffRX2]=ch; <SPAN class=comment>/* salva carattere nel buffer */</SPAN>
00150 buffRX2++;<SPAN class=keywordflow>if</SPAN> (buffRX2>10000) buffRX2=0;
00151 lastCH=ch; <SPAN class=comment>/* salva il carattere il lastCH */</SPAN>
00152 <SPAN class=keywordflow>return</SPAN> 1;
00153 } <SPAN class=keywordflow>else</SPAN> <SPAN class=keywordflow>return</SPAN> 0;
00154 }
00155
00156 <SPAN class=preprocessor> #define PPPINITFCS 0xffff </SPAN><SPAN class=comment>/* Initial FCS value */</SPAN>
00157
00158
00159 <SPAN class=comment>/*</SPAN>
00160 <SPAN class=comment> * Calculate a new fcs given the current fcs and the new data.</SPAN>
00161 <SPAN class=comment> */</SPAN>
00162 u_short pppfcs(fcs, cp, len) <SPAN class=comment>/* funzione per il calcolo dell'FCS da RFC */</SPAN>
00163 <SPAN class=keyword>register</SPAN> <SPAN class=keywordtype>unsigned</SPAN> <SPAN class=keywordtype>short</SPAN> fcs;
00164 <SPAN class=keyword>register</SPAN> <SPAN class=keywordtype>unsigned</SPAN> <SPAN class=keywordtype>char</SPAN> *cp;
00165 <SPAN class=keyword>register</SPAN> <SPAN class=keywordtype>int</SPAN> len;
00166 {
00167 <SPAN class=keywordflow>while</SPAN> (len--) {
00168 fcs = (fcs >> 8) ^ fcstab[(fcs ^ *cp++) & 0xff];
00169 }
00170 fcs=~fcs;
00171 <SPAN class=keywordflow>return</SPAN> fcs;
00172 }
00173
00174 <SPAN class=keywordtype>void</SPAN> logga(u_char *ppplog,<SPAN class=keywordtype>char</SPAN> *iniz) { <SPAN class=comment>/* log su stdout */</SPAN>
00175 <SPAN class=keywordtype>int</SPAN> t;
00176
00177 <SPAN class=keywordtype>void</SPAN> leggiOPZ() {
00178 <SPAN class=keywordtype>int</SPAN> t1;
00179 <SPAN class=keywordflow>for</SPAN> (t=0;t<(scbyte(ppplog_len)-4);) {
00180 <SPAN class=keywordflow>for</SPAN> (t1=0;t1<ppplog_dati[t+1];t1++)
00181 Log <SPAN class=stringliteral>"%x."</SPAN>,ppplog_dati[t+t1]);
00182 t+=t1;Log <SPAN class=stringliteral>" "</SPAN>);
00183 }
00184 }
00185
00186 <SPAN class=keywordtype>void</SPAN> CoNf() {
00187 <SPAN class=keywordflow>switch</SPAN> (ppplog_code) {
00188 <SPAN class=keywordflow>case</SPAN> 1: Log <SPAN class=stringliteral>"ConfReq "</SPAN>);<SPAN class=keywordflow>break</SPAN>;
00189 <SPAN class=keywordflow>case</SPAN> 2: Log <SPAN class=stringliteral>"ConfAck "</SPAN>);<SPAN class=keywordflow>break</SPAN>;
00190 <SPAN class=keywordflow>case</SPAN> 3: Log <SPAN class=stringliteral>"ConfNack "</SPAN>);<SPAN class=keywordflow>break</SPAN>;
00191 <SPAN class=keywordflow>case</SPAN> 4: Log <SPAN class=stringliteral>"ConfRej "</SPAN>);<SPAN class=keywordflow>break</SPAN>;
00192 <SPAN class=keywordflow>case</SPAN> 5: Log <SPAN class=stringliteral>"TermReq "</SPAN>);<SPAN class=keywordflow>break</SPAN>;
00193 <SPAN class=keywordflow>case</SPAN> 6: Log <SPAN class=stringliteral>"TermAck "</SPAN>);<SPAN class=keywordflow>break</SPAN>;
00194 }
00195 }
00196
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