diff options
Diffstat (limited to 'contrib/ipfilter/lib/ipft_pc.c')
| -rw-r--r-- | contrib/ipfilter/lib/ipft_pc.c | 254 |
1 files changed, 0 insertions, 254 deletions
diff --git a/contrib/ipfilter/lib/ipft_pc.c b/contrib/ipfilter/lib/ipft_pc.c deleted file mode 100644 index bd0c752c392f..000000000000 --- a/contrib/ipfilter/lib/ipft_pc.c +++ /dev/null @@ -1,254 +0,0 @@ -/* $FreeBSD$ */ - -/* - * Copyright (C) 2012 by Darren Reed. - * - * See the IPFILTER.LICENCE file for details on licencing. - * - * $Id$ - */ -#include "ipf.h" -#include "ipt.h" - -#if !defined(lint) -static const char rcsid[] = "@(#)$Id$"; -#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[] = { - { 0, 0, 0, 0 }, /* DLT_NULL */ - { 1, 14, 12, 2 }, /* DLT_Ethernet */ - { 10, 0, 0, 0 }, /* DLT_FDDI */ - { 12, 0, 0, 0 }, /* DLT_RAW */ - { -1, -1, -1, -1 } -}; - -typedef struct { - u_int id; - u_short major; - u_short minor; - u_int timezone; - u_int sigfigs; - u_int snaplen; - u_int type; -} fileheader_t; - -typedef struct { - u_32_t seconds; - u_32_t microseconds; - u_32_t caplen; - u_32_t wirelen; -} packetheader_t; - -static int ipcap_open(char *); -static int ipcap_close(void); -static int ipcap_readip(mb_t *, char **, int *); -static int ipcap_read_rec(packetheader_t *); -static void iswap_hdr(fileheader_t *); - -static int pfd = -1, swapped = 0; -static struct llc *llcp = NULL; - -struct ipread pcap = { ipcap_open, ipcap_close, ipcap_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 iswap_hdr(p) - fileheader_t *p; -{ - p->major = SWAPSHORT(p->major); - p->minor = SWAPSHORT(p->minor); - p->timezone = SWAPLONG(p->timezone); - p->sigfigs = SWAPLONG(p->sigfigs); - p->snaplen = SWAPLONG(p->snaplen); - p->type = SWAPLONG(p->type); -} - -static int ipcap_open(fname) - char *fname; -{ - fileheader_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.id != 0xa1b2c3d4) { - if (SWAPLONG(ph.id) != 0xa1b2c3d4) { - (void) close(fd); - return -2; - } - swapped = 1; - iswap_hdr(&ph); - } - - for (i = 0; llcs[i].lc_type != -1; i++) - if (llcs[i].lc_type == ph.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.id, ph.major, ph.minor, ph.type, ph.snaplen); - - return fd; -} - - -static int ipcap_close() -{ - return close(pfd); -} - - -/* - * read in the header (and validate) which should be the first record - * in a pcap file. - */ -static int ipcap_read_rec(rec) - packetheader_t *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->caplen = SWAPLONG(rec->caplen); - rec->wirelen = SWAPLONG(rec->wirelen); - rec->seconds = SWAPLONG(rec->seconds); - rec->microseconds = SWAPLONG(rec->microseconds); - } - p = rec->caplen; - n = MIN(p, rec->wirelen); - 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 ipcap_read(buf, cnt) - char *buf; - int cnt; -{ - packetheader_t rec; - static char *bufp = NULL; - int i, n; - - if ((i = ipcap_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 ipcap_readip(mb, ifn, dir) - mb_t *mb; - char **ifn; - int *dir; -{ - static char *bufp = NULL; - packetheader_t rec; - struct llc *l; - char *s, ty[4]; - int i, j, n; - char *buf; - int cnt; - -#if 0 - ifn = ifn; /* gcc -Wextra */ - dir = dir; /* gcc -Wextra */ -#endif - buf = (char *)mb->mb_buf; - cnt = sizeof(mb->mb_buf); - l = llcp; - - /* do { */ - if ((i = ipcap_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); - mb->mb_len = n; - return n; -} |