diff options
Diffstat (limited to 'ipft_hx.c')
| -rw-r--r-- | ipft_hx.c | 173 |
1 files changed, 173 insertions, 0 deletions
diff --git a/ipft_hx.c b/ipft_hx.c new file mode 100644 index 0000000..b26bd93 --- /dev/null +++ b/ipft_hx.c @@ -0,0 +1,173 @@ +/* + * Copyright (C) 1995-2001 by Darren Reed. + * + * See the IPFILTER.LICENCE file for details on licencing. + */ +#if defined(__sgi) && (IRIX > 602) +# include <sys/ptimers.h> +#endif +#include <stdio.h> +#include <ctype.h> +#include <assert.h> +#include <string.h> +#include <sys/types.h> +#if !defined(__SVR4) && !defined(__svr4__) +#include <strings.h> +#else +#include <sys/byteorder.h> +#endif +#include <sys/param.h> +#include <sys/time.h> +#include <stdlib.h> +#include <unistd.h> +#include <stddef.h> +#include <sys/socket.h> +#include <sys/ioctl.h> +#include <netinet/in.h> +#include <netinet/in_systm.h> +#ifndef linux +#include <netinet/ip_var.h> +#endif +#include <netinet/ip.h> +#include <netinet/udp.h> +#include <netinet/tcp.h> +#include <netinet/ip_icmp.h> +#include <net/if.h> +#include <netdb.h> +#include <arpa/nameser.h> +#include <resolv.h> +#include "ip_compat.h" +#include <netinet/tcpip.h> +#include "ipf.h" +#include "ipt.h" + +#if !defined(lint) +static const char sccsid[] = "@(#)ipft_hx.c 1.1 3/9/96 (C) 1996 Darren Reed"; +static const char rcsid[] = "@(#)$Id: ipft_hx.c,v 2.2.2.6 2002/12/06 11:40:25 darrenr Exp $"; +#endif + +extern int opts; + +static int hex_open __P((char *)); +static int hex_close __P((void)); +static int hex_readip __P((char *, int, char **, int *)); +static char *readhex __P((char *, char *)); + +struct ipread iphex = { hex_open, hex_close, hex_readip }; +static FILE *tfp = NULL; +static int tfd = -1; + +static int hex_open(fname) +char *fname; +{ + if (tfp && tfd != -1) { + rewind(tfp); + return tfd; + } + + if (!strcmp(fname, "-")) { + tfd = 0; + tfp = stdin; + } else { + tfd = open(fname, O_RDONLY); + if (tfd != -1) + tfp = fdopen(tfd, "r"); + } + return tfd; +} + + +static int hex_close() +{ + int cfd = tfd; + + tfd = -1; + return close(cfd); +} + + +static int hex_readip(buf, cnt, ifn, dir) +char *buf, **ifn; +int cnt, *dir; +{ + register char *s, *t, *u; + char line[513]; + ip_t *ip; + + /* + * interpret start of line as possibly "[ifname]" or + * "[in/out,ifname]". + */ + if (ifn) + *ifn = NULL; + if (dir) + *dir = 0; + ip = (ip_t *)buf; + while (fgets(line, sizeof(line)-1, tfp)) { + if ((s = index(line, '\n'))) { + if (s == line) + return (char *)ip - buf; + *s = '\0'; + } + if ((s = index(line, '#'))) + *s = '\0'; + if (!*line) + continue; + if (!(opts & OPT_BRIEF)) { + printf("input: %s\n", line); + fflush(stdout); + } + + if ((*line == '[') && (s = index(line, ']'))) { + t = line + 1; + if (s - t > 0) { + *s++ = '\0'; + if ((u = index(t, ',')) && (u < s)) { + u++; + if (ifn) + *ifn = strdup(u); + if (dir) { + if (*t == 'i') + *dir = 0; + else if (*t == 'o') + *dir = 1; + } + } else if (ifn) + *ifn = t; + } + } else + s = line; + ip = (ip_t *)readhex(s, (char *)ip); + } + return -1; +} + + +static char *readhex(src, dst) +register char *src, *dst; +{ + int state = 0; + char c; + + while ((c = *src++)) { + if (isspace(c)) { + if (state) { + dst++; + state = 0; + } + continue; + } else if ((c >= '0' && c <= '9') || (c >= 'a' && c <= 'f') || + (c >= 'A' && c <= 'F')) { + c = isdigit(c) ? (c - '0') : (toupper(c) - 55); + if (state == 0) { + *dst = (c << 4); + state++; + } else { + *dst++ |= c; + state = 0; + } + } else + break; + } + return dst; +} |
