diff options
Diffstat (limited to 'mdk-stage1/rp-pppoe/src/debug.c')
| -rw-r--r-- | mdk-stage1/rp-pppoe/src/debug.c | 143 |
1 files changed, 143 insertions, 0 deletions
diff --git a/mdk-stage1/rp-pppoe/src/debug.c b/mdk-stage1/rp-pppoe/src/debug.c new file mode 100644 index 000000000..052dca6c7 --- /dev/null +++ b/mdk-stage1/rp-pppoe/src/debug.c @@ -0,0 +1,143 @@ +/*********************************************************************** +* +* debug.c +* +* Implementation of user-space PPPoE redirector for Linux. +* +* Functions for printing debugging information +* +* Copyright (C) 2000 by Roaring Penguin Software Inc. +* +* This program may be distributed according to the terms of the GNU +* General Public License, version 2 or (at your option) any later version. +* +***********************************************************************/ + +static char const RCSID[] = +"$Id$"; + +#include "pppoe.h" +#include <sys/time.h> +#include <time.h> +#include <unistd.h> +#include <ctype.h> + +/********************************************************************** +*%FUNCTION: dumpHex +*%ARGUMENTS: +* fp -- file to dump to +* buf -- buffer to dump +* len -- length of data +*%RETURNS: +* Nothing +*%DESCRIPTION: +* Dumps buffer to fp in an easy-to-read format +***********************************************************************/ +void +dumpHex(FILE *fp, unsigned char const *buf, int len) +{ + int i; + int base; + + if (!fp) return; + + /* do NOT dump PAP packets */ + if (len >= 2 && buf[0] == 0xC0 && buf[1] == 0x23) { + fprintf(fp, "(PAP Authentication Frame -- Contents not dumped)\n"); + return; + } + + for (base=0; base<len; base += 16) { + for (i=base; i<base+16; i++) { + if (i < len) { + fprintf(fp, "%02x ", (unsigned) buf[i]); + } else { + fprintf(fp, " "); + } + } + fprintf(fp, " "); + for (i=base; i<base+16; i++) { + if (i < len) { + if (isprint(buf[i])) { + fprintf(fp, "%c", buf[i]); + } else { + fprintf(fp, "."); + } + } else { + break; + } + } + fprintf(fp, "\n"); + } +} + +/********************************************************************** +*%FUNCTION: dumpPacket +*%ARGUMENTS: +* fp -- file to dump to +* packet -- a PPPoE packet +* dir -- either SENT or RCVD +*%RETURNS: +* Nothing +*%DESCRIPTION: +* Dumps the PPPoE packet to fp in an easy-to-read format +***********************************************************************/ +void +dumpPacket(FILE *fp, PPPoEPacket *packet, char const *dir) +{ + int len = ntohs(packet->length); + + /* Sheesh... printing times is a pain... */ + struct timeval tv; + time_t now; + int millisec; + struct tm *lt; + char timebuf[256]; + + UINT16_t type = etherType(packet); + if (!fp) return; + gettimeofday(&tv, NULL); + now = (time_t) tv.tv_sec; + millisec = tv.tv_usec / 1000; + lt = localtime(&now); + strftime(timebuf, 256, "%H:%M:%S", lt); + fprintf(fp, "%s.%03d %s PPPoE ", timebuf, millisec, dir); + if (type == Eth_PPPOE_Discovery) { + fprintf(fp, "Discovery (%x) ", (unsigned) type); + } else if (type == Eth_PPPOE_Session) { + fprintf(fp, "Session (%x) ", (unsigned) type); + } else { + fprintf(fp, "Unknown (%x) ", (unsigned) type); + } + + switch(packet->code) { + case CODE_PADI: fprintf(fp, "PADI "); break; + case CODE_PADO: fprintf(fp, "PADO "); break; + case CODE_PADR: fprintf(fp, "PADR "); break; + case CODE_PADS: fprintf(fp, "PADS "); break; + case CODE_PADT: fprintf(fp, "PADT "); break; + case CODE_SESS: fprintf(fp, "SESS "); break; + } + + fprintf(fp, "sess-id %d length %d\n", + (int) ntohs(packet->session), + len); + + /* Ugly... I apologize... */ + fprintf(fp, + "SourceAddr %02x:%02x:%02x:%02x:%02x:%02x " + "DestAddr %02x:%02x:%02x:%02x:%02x:%02x\n", + (unsigned) packet->ethHdr.h_source[0], + (unsigned) packet->ethHdr.h_source[1], + (unsigned) packet->ethHdr.h_source[2], + (unsigned) packet->ethHdr.h_source[3], + (unsigned) packet->ethHdr.h_source[4], + (unsigned) packet->ethHdr.h_source[5], + (unsigned) packet->ethHdr.h_dest[0], + (unsigned) packet->ethHdr.h_dest[1], + (unsigned) packet->ethHdr.h_dest[2], + (unsigned) packet->ethHdr.h_dest[3], + (unsigned) packet->ethHdr.h_dest[4], + (unsigned) packet->ethHdr.h_dest[5]); + dumpHex(fp, packet->payload, ntohs(packet->length)); +} |