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 $";
25 /**********************************************************************
28 * fp -- file to dump to
29 * buf -- buffer to dump
30 * len -- length of data
34 * Dumps buffer to fp in an easy-to-read format
35 ***********************************************************************/
37 dumpHex(FILE *fp, unsigned char const *buf, int len)
44 /* do NOT dump PAP packets */
45 if (len >= 2 && buf[0] == 0xC0 && buf[1] == 0x23) {
46 fprintf(fp, "(PAP Authentication Frame -- Contents not dumped)\n");
50 for (base=0; base<len; base += 16) {
51 for (i=base; i<base+16; i++) {
53 fprintf(fp, "%02x ", (unsigned) buf[i]);
59 for (i=base; i<base+16; i++) {
61 if (isprint(buf[i])) {
62 fprintf(fp, "%c", buf[i]);
74 /**********************************************************************
75 *%FUNCTION: dumpPacket
77 * fp -- file to dump to
78 * packet -- a PPPoE packet
79 * dir -- either SENT or RCVD
83 * Dumps the PPPoE packet to fp in an easy-to-read format
84 ***********************************************************************/
86 dumpPacket(FILE *fp, PPPoEPacket *packet, char const *dir)
88 int len = ntohs(packet->length);
90 /* Sheesh... printing times is a pain... */
97 UINT16_t type = etherType(packet);
99 gettimeofday(&tv, NULL);
100 now = (time_t) tv.tv_sec;
101 millisec = tv.tv_usec / 1000;
102 lt = localtime(&now);
103 strftime(timebuf, 256, "%H:%M:%S", lt);
104 fprintf(fp, "%s.%03d %s PPPoE ", timebuf, millisec, dir);
105 if (type == Eth_PPPOE_Discovery) {
106 fprintf(fp, "Discovery (%x) ", (unsigned) type);
107 } else if (type == Eth_PPPOE_Session) {
108 fprintf(fp, "Session (%x) ", (unsigned) type);
110 fprintf(fp, "Unknown (%x) ", (unsigned) type);
113 switch(packet->code) {
114 case CODE_PADI: fprintf(fp, "PADI "); break;
115 case CODE_PADO: fprintf(fp, "PADO "); break;
116 case CODE_PADR: fprintf(fp, "PADR "); break;
117 case CODE_PADS: fprintf(fp, "PADS "); break;
118 case CODE_PADT: fprintf(fp, "PADT "); break;
119 case CODE_PADM: fprintf(fp, "PADM "); break;
120 case CODE_PADN: fprintf(fp, "PADN "); break;
121 case CODE_SESS: fprintf(fp, "SESS "); break;
124 fprintf(fp, "sess-id %d length %d\n",
125 (int) ntohs(packet->session),
128 /* Ugly... I apologize... */
130 "SourceAddr %02x:%02x:%02x:%02x:%02x:%02x "
131 "DestAddr %02x:%02x:%02x:%02x:%02x:%02x\n",
132 (unsigned) packet->ethHdr.h_source[0],
133 (unsigned) packet->ethHdr.h_source[1],
134 (unsigned) packet->ethHdr.h_source[2],
135 (unsigned) packet->ethHdr.h_source[3],
136 (unsigned) packet->ethHdr.h_source[4],
137 (unsigned) packet->ethHdr.h_source[5],
138 (unsigned) packet->ethHdr.h_dest[0],
139 (unsigned) packet->ethHdr.h_dest[1],
140 (unsigned) packet->ethHdr.h_dest[2],
141 (unsigned) packet->ethHdr.h_dest[3],
142 (unsigned) packet->ethHdr.h_dest[4],
143 (unsigned) packet->ethHdr.h_dest[5]);
144 dumpHex(fp, packet->payload, ntohs(packet->length));