1N/A/*
1N/A * pppdump - print out the contents of a record file generated by
1N/A * pppd in readable form.
1N/A *
1N/A * Copyright (C) 1999 Paul Mackerras. All rights reserved.
1N/A *
1N/A * This program is free software; you can redistribute it and/or
1N/A * modify it under the terms of the GNU General Public License
1N/A * as published by the Free Software Foundation; either version
1N/A * 2 of the License, or (at your option) any later version.
1N/A */
1N/A
1N/A#include <stdio.h>
1N/A#include <unistd.h>
1N/A#include <stdlib.h>
1N/A#include <time.h>
1N/A#include <sys/types.h>
1N/A#ifdef PPP_DEFS_IN_NET
1N/A#include <net/ppp_defs.h>
1N/A#else
1N/A#include "ppp_defs.h"
1N/A#endif
1N/A#include "ppp-comp.h"
1N/A
1N/Aint hexmode;
1N/Aint pppmode;
1N/Aint reverse;
1N/Aint decompress;
1N/Aint mru = 1500;
1N/Aint abs_times;
1N/Atime_t start_time;
1N/Aint start_time_tenths;
1N/Aint tot_sent, tot_rcvd;
1N/A
1N/Aextern int optind;
1N/Aextern char *optarg;
1N/A
1N/Avoid dumplog();
1N/Avoid dumpppp();
1N/Avoid show_time();
1N/Avoid handle_ccp();
1N/A
1N/Aint
1N/Amain(ac, av)
1N/A int ac;
1N/A char **av;
1N/A{
1N/A int i;
1N/A char *p;
1N/A FILE *f;
1N/A
1N/A while ((i = getopt(ac, av, "hprdm:a")) != -1) {
1N/A switch (i) {
1N/A case 'h':
1N/A hexmode = 1;
1N/A break;
1N/A case 'p':
1N/A pppmode = 1;
1N/A break;
1N/A case 'r':
1N/A reverse = 1;
1N/A break;
1N/A case 'd':
1N/A decompress = 1;
1N/A break;
1N/A case 'm':
1N/A mru = atoi(optarg);
1N/A break;
1N/A case 'a':
1N/A abs_times = 1;
1N/A break;
1N/A default:
1N/A fprintf(stderr, "Usage: %s [-h | -p[d]] [-r] [-m mru] [-a] [file ...]\n", av[0]);
1N/A exit(1);
1N/A }
1N/A }
1N/A if (optind >= ac)
1N/A dumplog(stdin);
1N/A else {
1N/A for (i = optind; i < ac; ++i) {
1N/A p = av[i];
1N/A if ((f = fopen(p, "r")) == NULL) {
1N/A perror(p);
1N/A exit(1);
1N/A }
1N/A if (pppmode)
1N/A dumpppp(f);
1N/A else
1N/A dumplog(f);
1N/A fclose(f);
1N/A }
1N/A }
1N/A exit(0);
1N/A}
1N/A
1N/Avoid
1N/Adumplog(f)
1N/A FILE *f;
1N/A{
1N/A int c, n, k, col;
1N/A int nb, c2;
1N/A unsigned char buf[16];
1N/A
1N/A while ((c = getc(f)) != EOF) {
1N/A switch (c) {
1N/A case RECMARK_STARTSEND:
1N/A case RECMARK_STARTRECV:
1N/A if (reverse)
1N/A c = c==RECMARK_STARTSEND ? RECMARK_STARTRECV :
1N/A RECMARK_STARTSEND;
1N/A printf("%s %c", c==RECMARK_STARTSEND? "sent": "rcvd",
1N/A hexmode? ' ': '"');
1N/A col = 6;
1N/A n = getc(f);
1N/A n = (n << 8) + getc(f);
1N/A *(c==1? &tot_sent: &tot_rcvd) += n;
1N/A nb = 0;
1N/A for (; n > 0; --n) {
1N/A c = getc(f);
1N/A if (c == EOF) {
1N/A printf("\nEOF\n");
1N/A exit(0);
1N/A }
1N/A if (hexmode) {
1N/A if (nb >= 16) {
1N/A printf(" ");
1N/A for (k = 0; k < nb; ++k) {
1N/A c2 = buf[k];
1N/A putchar((' ' <= c2 && c2 <= '~')? c2: '.');
1N/A }
1N/A printf("\n ");
1N/A nb = 0;
1N/A }
1N/A buf[nb++] = c;
1N/A printf(" %.2x", c);
1N/A } else {
1N/A k = (' ' <= c && c <= '~')? (c != '\\' && c != '"')? 1: 2: 3;
1N/A if ((col += k) >= 78) {
1N/A printf("\n ");
1N/A col = 6 + k;
1N/A }
1N/A switch (k) {
1N/A case 1:
1N/A putchar(c);
1N/A break;
1N/A case 2:
1N/A printf("\\%c", c);
1N/A break;
1N/A case 3:
1N/A printf("\\%.2x", c);
1N/A break;
1N/A }
1N/A }
1N/A }
1N/A if (hexmode) {
1N/A for (k = nb; k < 16; ++k)
1N/A printf(" ");
1N/A printf(" ");
1N/A for (k = 0; k < nb; ++k) {
1N/A c2 = buf[k];
1N/A putchar((' ' <= c2 && c2 <= '~')? c2: '.');
1N/A }
1N/A } else
1N/A putchar('"');
1N/A printf("\n");
1N/A break;
1N/A case RECMARK_ENDSEND:
1N/A case RECMARK_ENDRECV:
1N/A if (reverse)
1N/A c = c==RECMARK_ENDSEND ? RECMARK_ENDRECV : RECMARK_ENDSEND;
1N/A printf("end %s\n", c==RECMARK_ENDSEND? "send": "recv");
1N/A break;
1N/A case RECMARK_TIMEDELTA32:
1N/A case RECMARK_TIMEDELTA8:
1N/A case RECMARK_TIMESTART:
1N/A show_time(f, c);
1N/A break;
1N/A default:
1N/A printf("?%.2x\n");
1N/A }
1N/A }
1N/A}
1N/A
1N/A/*
1N/A * FCS lookup table as calculated by genfcstab.
1N/A */
1N/Astatic u_short fcstab[256] = {
1N/A 0x0000, 0x1189, 0x2312, 0x329b, 0x4624, 0x57ad, 0x6536, 0x74bf,
1N/A 0x8c48, 0x9dc1, 0xaf5a, 0xbed3, 0xca6c, 0xdbe5, 0xe97e, 0xf8f7,
1N/A 0x1081, 0x0108, 0x3393, 0x221a, 0x56a5, 0x472c, 0x75b7, 0x643e,
1N/A 0x9cc9, 0x8d40, 0xbfdb, 0xae52, 0xdaed, 0xcb64, 0xf9ff, 0xe876,
1N/A 0x2102, 0x308b, 0x0210, 0x1399, 0x6726, 0x76af, 0x4434, 0x55bd,
1N/A 0xad4a, 0xbcc3, 0x8e58, 0x9fd1, 0xeb6e, 0xfae7, 0xc87c, 0xd9f5,
1N/A 0x3183, 0x200a, 0x1291, 0x0318, 0x77a7, 0x662e, 0x54b5, 0x453c,
1N/A 0xbdcb, 0xac42, 0x9ed9, 0x8f50, 0xfbef, 0xea66, 0xd8fd, 0xc974,
1N/A 0x4204, 0x538d, 0x6116, 0x709f, 0x0420, 0x15a9, 0x2732, 0x36bb,
1N/A 0xce4c, 0xdfc5, 0xed5e, 0xfcd7, 0x8868, 0x99e1, 0xab7a, 0xbaf3,
1N/A 0x5285, 0x430c, 0x7197, 0x601e, 0x14a1, 0x0528, 0x37b3, 0x263a,
1N/A 0xdecd, 0xcf44, 0xfddf, 0xec56, 0x98e9, 0x8960, 0xbbfb, 0xaa72,
1N/A 0x6306, 0x728f, 0x4014, 0x519d, 0x2522, 0x34ab, 0x0630, 0x17b9,
1N/A 0xef4e, 0xfec7, 0xcc5c, 0xddd5, 0xa96a, 0xb8e3, 0x8a78, 0x9bf1,
1N/A 0x7387, 0x620e, 0x5095, 0x411c, 0x35a3, 0x242a, 0x16b1, 0x0738,
1N/A 0xffcf, 0xee46, 0xdcdd, 0xcd54, 0xb9eb, 0xa862, 0x9af9, 0x8b70,
1N/A 0x8408, 0x9581, 0xa71a, 0xb693, 0xc22c, 0xd3a5, 0xe13e, 0xf0b7,
1N/A 0x0840, 0x19c9, 0x2b52, 0x3adb, 0x4e64, 0x5fed, 0x6d76, 0x7cff,
1N/A 0x9489, 0x8500, 0xb79b, 0xa612, 0xd2ad, 0xc324, 0xf1bf, 0xe036,
1N/A 0x18c1, 0x0948, 0x3bd3, 0x2a5a, 0x5ee5, 0x4f6c, 0x7df7, 0x6c7e,
1N/A 0xa50a, 0xb483, 0x8618, 0x9791, 0xe32e, 0xf2a7, 0xc03c, 0xd1b5,
1N/A 0x2942, 0x38cb, 0x0a50, 0x1bd9, 0x6f66, 0x7eef, 0x4c74, 0x5dfd,
1N/A 0xb58b, 0xa402, 0x9699, 0x8710, 0xf3af, 0xe226, 0xd0bd, 0xc134,
1N/A 0x39c3, 0x284a, 0x1ad1, 0x0b58, 0x7fe7, 0x6e6e, 0x5cf5, 0x4d7c,
1N/A 0xc60c, 0xd785, 0xe51e, 0xf497, 0x8028, 0x91a1, 0xa33a, 0xb2b3,
1N/A 0x4a44, 0x5bcd, 0x6956, 0x78df, 0x0c60, 0x1de9, 0x2f72, 0x3efb,
1N/A 0xd68d, 0xc704, 0xf59f, 0xe416, 0x90a9, 0x8120, 0xb3bb, 0xa232,
1N/A 0x5ac5, 0x4b4c, 0x79d7, 0x685e, 0x1ce1, 0x0d68, 0x3ff3, 0x2e7a,
1N/A 0xe70e, 0xf687, 0xc41c, 0xd595, 0xa12a, 0xb0a3, 0x8238, 0x93b1,
1N/A 0x6b46, 0x7acf, 0x4854, 0x59dd, 0x2d62, 0x3ceb, 0x0e70, 0x1ff9,
1N/A 0xf78f, 0xe606, 0xd49d, 0xc514, 0xb1ab, 0xa022, 0x92b9, 0x8330,
1N/A 0x7bc7, 0x6a4e, 0x58d5, 0x495c, 0x3de3, 0x2c6a, 0x1ef1, 0x0f78
1N/A};
1N/A
1N/Astruct pkt {
1N/A int cnt;
1N/A int esc;
1N/A int flags;
1N/A struct compressor *comp;
1N/A void *state;
1N/A unsigned char buf[8192];
1N/A} spkt, rpkt;
1N/A
1N/A/* Values for flags */
1N/A#define CCP_ISUP 1
1N/A#define CCP_ERROR 2
1N/A#define CCP_FATALERROR 4
1N/A#define CCP_ERR (CCP_ERROR | CCP_FATALERROR)
1N/A#define CCP_DECOMP_RUN 8
1N/A
1N/Aunsigned char dbuf[8192];
1N/A
1N/Avoid
1N/Adumpppp(f)
1N/A FILE *f;
1N/A{
1N/A int c, n, k;
1N/A int nb, nl, dn, proto, rv;
1N/A char *dir, *q;
1N/A unsigned char *p, *r, *endp;
1N/A unsigned char *d;
1N/A unsigned short fcs;
1N/A struct pkt *pkt;
1N/A
1N/A spkt.cnt = rpkt.cnt = 0;
1N/A spkt.esc = rpkt.esc = 0;
1N/A while ((c = getc(f)) != EOF) {
1N/A switch (c) {
1N/A case RECMARK_STARTSEND:
1N/A case RECMARK_STARTRECV:
1N/A if (reverse)
1N/A c = c==RECMARK_STARTSEND ? RECMARK_STARTRECV :
1N/A RECMARK_STARTSEND;
1N/A dir = c==RECMARK_STARTSEND? "sent": "rcvd";
1N/A pkt = c==RECMARK_STARTSEND? &spkt: &rpkt;
1N/A n = getc(f);
1N/A n = (n << 8) + getc(f);
1N/A *(c==1? &tot_sent: &tot_rcvd) += n;
1N/A for (; n > 0; --n) {
1N/A c = getc(f);
1N/A switch (c) {
1N/A case EOF:
1N/A printf("\nEOF\n");
1N/A if (spkt.cnt > 0)
1N/A printf("[%d bytes in incomplete send packet]\n",
1N/A spkt.cnt);
1N/A if (rpkt.cnt > 0)
1N/A printf("[%d bytes in incomplete recv packet]\n",
1N/A rpkt.cnt);
1N/A exit(0);
1N/A case '~':
1N/A if (pkt->cnt > 0) {
1N/A q = dir;
1N/A if (pkt->esc) {
1N/A printf("%s aborted packet:\n ", dir);
1N/A q = " ";
1N/A }
1N/A nb = pkt->cnt;
1N/A p = pkt->buf;
1N/A pkt->cnt = 0;
1N/A pkt->esc = 0;
1N/A if (nb <= 2) {
1N/A printf("%s short packet [%d bytes]:", q, nb);
1N/A for (k = 0; k < nb; ++k)
1N/A printf(" %.2x", p[k]);
1N/A printf("\n");
1N/A break;
1N/A }
1N/A fcs = PPP_INITFCS;
1N/A for (k = 0; k < nb; ++k)
1N/A fcs = PPP_FCS(fcs, p[k]);
1N/A fcs &= 0xFFFF;
1N/A nb -= 2;
1N/A endp = p + nb;
1N/A r = p;
1N/A if (r[0] == 0xff && r[1] == 3)
1N/A r += 2;
1N/A if ((r[0] & 1) == 0)
1N/A ++r;
1N/A ++r;
1N/A if (endp - r > mru)
1N/A printf(" ERROR: length (%d) > MRU (%d)\n",
1N/A endp - r, mru);
1N/A if (decompress && fcs == PPP_GOODFCS) {
1N/A /* See if this is a CCP or compressed packet */
1N/A d = dbuf;
1N/A r = p;
1N/A if (r[0] == 0xff && r[1] == 3) {
1N/A *d++ = *r++;
1N/A *d++ = *r++;
1N/A }
1N/A proto = r[0];
1N/A if ((proto & 1) == 0)
1N/A proto = (proto << 8) + r[1];
1N/A if (proto == PPP_CCP) {
1N/A handle_ccp(pkt, r + 2, endp - r - 2);
1N/A } else if (proto == PPP_COMP) {
1N/A if ((pkt->flags & CCP_ISUP)
1N/A && (pkt->flags & CCP_DECOMP_RUN)
1N/A && pkt->state
1N/A && (pkt->flags & CCP_ERR) == 0) {
1N/A rv = pkt->comp->decompress(pkt->state, r,
1N/A endp - r, d, &dn);
1N/A switch (rv) {
1N/A case DECOMP_OK:
1N/A p = dbuf;
1N/A nb = d + dn - p;
1N/A if ((d[0] & 1) == 0)
1N/A --dn;
1N/A --dn;
1N/A if (dn > mru)
1N/A printf(" ERROR: decompressed length (%d) > MRU (%d)\n", dn, mru);
1N/A break;
1N/A case DECOMP_ERROR:
1N/A printf(" DECOMPRESSION ERROR\n");
1N/A pkt->flags |= CCP_ERROR;
1N/A break;
1N/A case DECOMP_FATALERROR:
1N/A printf(" FATAL DECOMPRESSION ERROR\n");
1N/A pkt->flags |= CCP_FATALERROR;
1N/A break;
1N/A }
1N/A }
1N/A } else if (pkt->state
1N/A && (pkt->flags & CCP_DECOMP_RUN)) {
1N/A pkt->comp->incomp(pkt->state, r, endp - r);
1N/A }
1N/A }
1N/A do {
1N/A nl = nb < 16? nb: 16;
1N/A printf("%s ", q);
1N/A for (k = 0; k < nl; ++k)
1N/A printf(" %.2x", p[k]);
1N/A for (; k < 16; ++k)
1N/A printf(" ");
1N/A printf(" ");
1N/A for (k = 0; k < nl; ++k) {
1N/A c = p[k];
1N/A putchar((' ' <= c && c <= '~')? c: '.');
1N/A }
1N/A printf("\n");
1N/A q = " ";
1N/A p += nl;
1N/A nb -= nl;
1N/A } while (nb > 0);
1N/A if (fcs != PPP_GOODFCS)
1N/A printf(" BAD FCS: (residue = %x)\n", fcs);
1N/A }
1N/A break;
1N/A case '}':
1N/A if (!pkt->esc) {
1N/A pkt->esc = 1;
1N/A break;
1N/A }
1N/A /* else fall through */
1N/A default:
1N/A if (pkt->esc) {
1N/A c ^= 0x20;
1N/A pkt->esc = 0;
1N/A }
1N/A pkt->buf[pkt->cnt++] = c;
1N/A break;
1N/A }
1N/A }
1N/A break;
1N/A case RECMARK_ENDSEND:
1N/A case RECMARK_ENDRECV:
1N/A if (reverse)
1N/A c = c==RECMARK_ENDSEND ? RECMARK_ENDRECV : RECMARK_ENDSEND;
1N/A dir = c==RECMARK_ENDSEND ? "send": "recv";
1N/A pkt = c==RECMARK_ENDSEND ? &spkt: &rpkt;
1N/A printf("end %s", dir);
1N/A if (pkt->cnt > 0)
1N/A printf(" [%d bytes in incomplete packet]", pkt->cnt);
1N/A printf("\n");
1N/A break;
1N/A case RECMARK_TIMEDELTA32:
1N/A case RECMARK_TIMEDELTA8:
1N/A case RECMARK_TIMESTART:
1N/A show_time(f, c);
1N/A break;
1N/A default:
1N/A printf("?%.2x\n");
1N/A }
1N/A }
1N/A}
1N/A
1N/Aextern struct compressor ppp_bsd_compress, ppp_deflate;
1N/A
1N/Astruct compressor *compressors[] = {
1N/A#if DO_BSD_COMPRESS
1N/A &ppp_bsd_compress,
1N/A#endif
1N/A#if DO_DEFLATE
1N/A &ppp_deflate,
1N/A#endif
1N/A NULL
1N/A};
1N/A
1N/Avoid
1N/Ahandle_ccp(cp, dp, len)
1N/A struct pkt *cp;
1N/A u_char *dp;
1N/A int len;
1N/A{
1N/A int clen;
1N/A struct compressor **comp;
1N/A
1N/A if (len < CCP_HDRLEN)
1N/A return;
1N/A clen = CCP_LENGTH(dp);
1N/A if (clen > len)
1N/A return;
1N/A
1N/A switch (CCP_CODE(dp)) {
1N/A case CCP_CONFACK:
1N/A cp->flags &= ~(CCP_DECOMP_RUN | CCP_ISUP);
1N/A if (clen < CCP_HDRLEN + CCP_OPT_MINLEN
1N/A || clen < CCP_HDRLEN + CCP_OPT_LENGTH(dp + CCP_HDRLEN))
1N/A break;
1N/A dp += CCP_HDRLEN;
1N/A clen -= CCP_HDRLEN;
1N/A for (comp = compressors; *comp != NULL; ++comp) {
1N/A if ((*comp)->compress_proto == dp[0]) {
1N/A if (cp->state != NULL) {
1N/A (*cp->comp->decomp_free)(cp->state);
1N/A cp->state = NULL;
1N/A }
1N/A cp->comp = *comp;
1N/A cp->state = (*comp)->decomp_alloc(dp, CCP_OPT_LENGTH(dp));
1N/A cp->flags |= CCP_ISUP;
1N/A if (cp->state != NULL
1N/A && (*cp->comp->decomp_init)
1N/A (cp->state, dp, clen, 0, 0, 8192, 1))
1N/A cp->flags = (cp->flags & ~CCP_ERR) | CCP_DECOMP_RUN;
1N/A break;
1N/A }
1N/A }
1N/A break;
1N/A
1N/A case CCP_CONFNAK:
1N/A case CCP_CONFREJ:
1N/A cp->flags &= ~(CCP_DECOMP_RUN | CCP_ISUP);
1N/A break;
1N/A
1N/A case CCP_RESETACK:
1N/A if (cp->flags & CCP_ISUP) {
1N/A if (cp->state && (cp->flags & CCP_DECOMP_RUN)) {
1N/A (*cp->comp->decomp_reset)(cp->state);
1N/A cp->flags &= ~CCP_ERROR;
1N/A }
1N/A }
1N/A break;
1N/A }
1N/A}
1N/A
1N/Avoid
1N/Ashow_time(f, c)
1N/A FILE *f;
1N/A int c;
1N/A{
1N/A time_t t;
1N/A int n;
1N/A struct tm *tm;
1N/A
1N/A if (c == RECMARK_TIMESTART) {
1N/A t = getc(f);
1N/A t = (t << 8) + getc(f);
1N/A t = (t << 8) + getc(f);
1N/A t = (t << 8) + getc(f);
1N/A printf("start %s", ctime(&t));
1N/A start_time = t;
1N/A start_time_tenths = 0;
1N/A tot_sent = tot_rcvd = 0;
1N/A } else {
1N/A n = getc(f);
1N/A if (c == RECMARK_TIMEDELTA32) {
1N/A for (c = 3; c > 0; --c)
1N/A n = (n << 8) + getc(f);
1N/A }
1N/A if (abs_times) {
1N/A n += start_time_tenths;
1N/A start_time += n / 10;
1N/A start_time_tenths = n % 10;
1N/A tm = localtime(&start_time);
1N/A printf("time %.2d:%.2d:%.2d.%d", tm->tm_hour, tm->tm_min,
1N/A tm->tm_sec, start_time_tenths);
1N/A printf(" (sent %d, rcvd %d)\n", tot_sent, tot_rcvd);
1N/A } else
1N/A printf("time %.1fs\n", (double) n / 10);
1N/A }
1N/A}