diff options
Diffstat (limited to 'contrib/ipfilter/lib/ipft_pc.c')
| -rw-r--r-- | contrib/ipfilter/lib/ipft_pc.c | 267 |
1 files changed, 0 insertions, 267 deletions
diff --git a/contrib/ipfilter/lib/ipft_pc.c b/contrib/ipfilter/lib/ipft_pc.c deleted file mode 100644 index fbfe6b0..0000000 --- a/contrib/ipfilter/lib/ipft_pc.c +++ /dev/null @@ -1,267 +0,0 @@ -/* - * Copyright (C) 2000-2005 by Darren Reed. - * - * See the IPFILTER.LICENCE file for details on licencing. - * - * $Id: ipft_pc.c,v 1.10.2.2 2006/06/16 17:21:03 darrenr Exp $ - */ -#include "ipf.h" -#include "pcap-ipf.h" -#include "bpf-ipf.h" -#include "ipt.h" - -#if !defined(lint) -static const char rcsid[] = "@(#)$Id: ipft_pc.c,v 1.10.2.2 2006/06/16 17:21:03 darrenr Exp $"; -#endif - -struct llc { - int lc_type; - int lc_sz; /* LLC header length */ - int lc_to; /* LLC Type offset */ - int lc_tl; /* LLC Type length */ -}; - -/* - * While many of these maybe the same, some do have different header formats - * which make this useful. - */ - -static struct llc llcs[] = { - { DLT_NULL, 0, 0, 0 }, - { DLT_EN10MB, 14, 12, 2 }, - { DLT_EN3MB, 0, 0, 0 }, - { DLT_AX25, 0, 0, 0 }, - { DLT_PRONET, 0, 0, 0 }, - { DLT_CHAOS, 0, 0, 0 }, - { DLT_IEEE802, 0, 0, 0 }, - { DLT_ARCNET, 0, 0, 0 }, - { DLT_SLIP, 0, 0, 0 }, - { DLT_PPP, 0, 0, 0 }, - { DLT_FDDI, 0, 0, 0 }, -#ifdef DLT_ATMRFC1483 - { DLT_ATMRFC1483, 0, 0, 0 }, -#endif - { DLT_RAW, 0, 0, 0 }, -#ifdef DLT_ENC - { DLT_ENC, 0, 0, 0 }, -#endif -#ifdef DLT_SLIP_BSDOS - { DLT_SLIP_BSDOS, 0, 0, 0 }, -#endif -#ifdef DLT_PPP_BSDOS - { DLT_PPP_BSDOS, 0, 0, 0 }, -#endif -#ifdef DLT_HIPPI - { DLT_HIPPI, 0, 0, 0 }, -#endif -#ifdef DLT_HDLC - { DLT_HDLC, 0, 0, 0 }, -#endif -#ifdef DLT_PPP_SERIAL - { DLT_PPP_SERIAL, 4, 4, 0 }, -#endif -#ifdef DLT_PPP_ETHER - { DLT_PPP_ETHER, 8, 8, 0 }, -#endif -#ifdef DLT_ECONET - { DLT_ECONET, 0, 0, 0 }, -#endif - { -1, -1, -1, -1 } -}; - -static int pcap_open __P((char *)); -static int pcap_close __P((void)); -static int pcap_readip __P((char *, int, char **, int *)); -static void swap_hdr __P((pcaphdr_t *)); -static int pcap_read_rec __P((struct pcap_pkthdr *)); - -static int pfd = -1, swapped = 0; -static struct llc *llcp = NULL; - -struct ipread pcap = { pcap_open, pcap_close, pcap_readip, 0 }; - -#define SWAPLONG(y) \ - ((((y)&0xff)<<24) | (((y)&0xff00)<<8) | (((y)&0xff0000)>>8) | (((y)>>24)&0xff)) -#define SWAPSHORT(y) \ - ( (((y)&0xff)<<8) | (((y)&0xff00)>>8) ) - -static void swap_hdr(p) -pcaphdr_t *p; -{ - p->pc_v_maj = SWAPSHORT(p->pc_v_maj); - p->pc_v_min = SWAPSHORT(p->pc_v_min); - p->pc_zone = SWAPLONG(p->pc_zone); - p->pc_sigfigs = SWAPLONG(p->pc_sigfigs); - p->pc_slen = SWAPLONG(p->pc_slen); - p->pc_type = SWAPLONG(p->pc_type); -} - -static int pcap_open(fname) -char *fname; -{ - pcaphdr_t ph; - int fd, i; - - if (pfd != -1) - return pfd; - - if (!strcmp(fname, "-")) - fd = 0; - else if ((fd = open(fname, O_RDONLY)) == -1) - return -1; - - if (read(fd, (char *)&ph, sizeof(ph)) != sizeof(ph)) - return -2; - - if (ph.pc_id != TCPDUMP_MAGIC) { - if (SWAPLONG(ph.pc_id) != TCPDUMP_MAGIC) { - (void) close(fd); - return -2; - } - swapped = 1; - swap_hdr(&ph); - } - - if (ph.pc_v_maj != PCAP_VERSION_MAJ) { - (void) close(fd); - return -2; - } - - for (i = 0; llcs[i].lc_type != -1; i++) - if (llcs[i].lc_type == ph.pc_type) { - llcp = llcs + i; - break; - } - - if (llcp == NULL) { - (void) close(fd); - return -2; - } - - pfd = fd; - printf("opened pcap file %s:\n", fname); - printf("\tid: %08x version: %d.%d type: %d snap %d\n", - ph.pc_id, ph.pc_v_maj, ph.pc_v_min, ph.pc_type, ph.pc_slen); - - return fd; -} - - -static int pcap_close() -{ - return close(pfd); -} - - -/* - * read in the header (and validate) which should be the first record - * in a pcap file. - */ -static int pcap_read_rec(rec) -struct pcap_pkthdr *rec; -{ - int n, p, i; - char *s; - - s = (char *)rec; - n = sizeof(*rec); - - while (n > 0) { - i = read(pfd, (char *)rec, sizeof(*rec)); - if (i <= 0) - return -2; - s += i; - n -= i; - } - - if (swapped) { - rec->ph_clen = SWAPLONG(rec->ph_clen); - rec->ph_len = SWAPLONG(rec->ph_len); - rec->ph_ts.tv_sec = SWAPLONG(rec->ph_ts.tv_sec); - rec->ph_ts.tv_usec = SWAPLONG(rec->ph_ts.tv_usec); - } - p = rec->ph_clen; - n = MIN(p, rec->ph_len); - if (!n || n < 0) - return -3; - - if (p < 0 || p > 65536) - return -4; - return p; -} - - -#ifdef notyet -/* - * read an entire pcap packet record. only the data part is copied into - * the available buffer, with the number of bytes copied returned. - */ -static int pcap_read(buf, cnt) -char *buf; -int cnt; -{ - struct pcap_pkthdr rec; - static char *bufp = NULL; - int i, n; - - if ((i = pcap_read_rec(&rec)) <= 0) - return i; - - if (!bufp) - bufp = malloc(i); - else - bufp = realloc(bufp, i); - - if (read(pfd, bufp, i) != i) - return -2; - - n = MIN(i, cnt); - bcopy(bufp, buf, n); - return n; -} -#endif - - -/* - * return only an IP packet read into buf - */ -static int pcap_readip(buf, cnt, ifn, dir) -char *buf, **ifn; -int cnt, *dir; -{ - static char *bufp = NULL; - struct pcap_pkthdr rec; - struct llc *l; - char *s, ty[4]; - int i, j, n; - - l = llcp; - - /* do { */ - if ((i = pcap_read_rec(&rec)) <= 0) - return i; - - if (!bufp) - bufp = malloc(i); - else - bufp = realloc(bufp, i); - s = bufp; - - for (j = i, n = 0; j > 0; ) { - n = read(pfd, s, j); - if (n <= 0) - return -2; - j -= n; - s += n; - } - s = bufp; - - i -= l->lc_sz; - s += l->lc_to; - bcopy(s, ty, l->lc_tl); - s += l->lc_tl; - /* } while (ty[0] != 0x8 && ty[1] != 0); */ - n = MIN(i, cnt); - bcopy(s, buf, n); - return n; -} |
