1 /***********************************************************************
5 * Implementation of user-space PPPoE redirector for Linux.
7 * Functions for printing debugging information
9 * Copyright (C) 2000 by Roaring Penguin Software Inc.
11 * This program may be distributed according to the terms of the GNU
12 * General Public License, version 2 or (at your option) any later version.
14 ***********************************************************************/
16 static char const RCSID[] =
17 "$Id: debug.c,v 1.2 2008/06/09 08:34:23 paulus Exp $";
29 /**********************************************************************
32 * fp -- file to dump to
33 * buf -- buffer to dump
34 * len -- length of data
38 * Dumps buffer to fp in an easy-to-read format
39 ***********************************************************************/
41 dumpHex(FILE *fp, unsigned char const *buf, int len)
48 /* do NOT dump PAP packets */
49 if (len >= 2 && buf[0] == 0xC0 && buf[1] == 0x23) {
50 fprintf(fp, "(PAP Authentication Frame -- Contents not dumped)\n");
54 for (base=0; base<len; base += 16) {
55 for (i=base; i<base+16; i++) {
57 fprintf(fp, "%02x ", (unsigned) buf[i]);
63 for (i=base; i<base+16; i++) {
65 if (isprint(buf[i])) {
66 fprintf(fp, "%c", buf[i]);
78 /**********************************************************************
79 *%FUNCTION: dumpPacket
81 * fp -- file to dump to
82 * packet -- a PPPoE packet
83 * dir -- either SENT or RCVD
87 * Dumps the PPPoE packet to fp in an easy-to-read format
88 ***********************************************************************/
90 dumpPacket(FILE *fp, PPPoEPacket *packet, char const *dir)
92 int len = ntohs(packet->length);
94 /* Sheesh... printing times is a pain... */
101 UINT16_t type = etherType(packet);
103 gettimeofday(&tv, NULL);
104 now = (time_t) tv.tv_sec;
105 millisec = tv.tv_usec / 1000;
106 lt = localtime(&now);
107 strftime(timebuf, 256, "%H:%M:%S", lt);
108 fprintf(fp, "%s.%03d %s PPPoE ", timebuf, millisec, dir);
109 if (type == Eth_PPPOE_Discovery) {
110 fprintf(fp, "Discovery (%x) ", (unsigned) type);
111 } else if (type == Eth_PPPOE_Session) {
112 fprintf(fp, "Session (%x) ", (unsigned) type);
114 fprintf(fp, "Unknown (%x) ", (unsigned) type);
117 switch(packet->code) {
118 case CODE_PADI: fprintf(fp, "PADI "); break;
119 case CODE_PADO: fprintf(fp, "PADO "); break;
120 case CODE_PADR: fprintf(fp, "PADR "); break;
121 case CODE_PADS: fprintf(fp, "PADS "); break;
122 case CODE_PADT: fprintf(fp, "PADT "); break;
123 case CODE_PADM: fprintf(fp, "PADM "); break;
124 case CODE_PADN: fprintf(fp, "PADN "); break;
125 case CODE_SESS: fprintf(fp, "SESS "); break;
128 fprintf(fp, "sess-id %d length %d\n",
129 (int) ntohs(packet->session),
132 /* Ugly... I apologize... */
134 "SourceAddr %02x:%02x:%02x:%02x:%02x:%02x "
135 "DestAddr %02x:%02x:%02x:%02x:%02x:%02x\n",
136 (unsigned) packet->ethHdr.h_source[0],
137 (unsigned) packet->ethHdr.h_source[1],
138 (unsigned) packet->ethHdr.h_source[2],
139 (unsigned) packet->ethHdr.h_source[3],
140 (unsigned) packet->ethHdr.h_source[4],
141 (unsigned) packet->ethHdr.h_source[5],
142 (unsigned) packet->ethHdr.h_dest[0],
143 (unsigned) packet->ethHdr.h_dest[1],
144 (unsigned) packet->ethHdr.h_dest[2],
145 (unsigned) packet->ethHdr.h_dest[3],
146 (unsigned) packet->ethHdr.h_dest[4],
147 (unsigned) packet->ethHdr.h_dest[5]);
148 dumpHex(fp, packet->payload, ntohs(packet->length));