diff options
Diffstat (limited to 'contrib/tcpdump/util.c')
-rw-r--r-- | contrib/tcpdump/util.c | 530 |
1 files changed, 0 insertions, 530 deletions
diff --git a/contrib/tcpdump/util.c b/contrib/tcpdump/util.c deleted file mode 100644 index 912f6f3..0000000 --- a/contrib/tcpdump/util.c +++ /dev/null @@ -1,530 +0,0 @@ -/* - * Copyright (c) 1990, 1991, 1993, 1994, 1995, 1996, 1997 - * The Regents of the University of California. All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that: (1) source code distributions - * retain the above copyright notice and this paragraph in its entirety, (2) - * distributions including binary code include the above copyright notice and - * this paragraph in its entirety in the documentation or other materials - * provided with the distribution, and (3) all advertising materials mentioning - * features or use of this software display the following acknowledgement: - * ``This product includes software developed by the University of California, - * Lawrence Berkeley Laboratory and its contributors.'' Neither the name of - * the University nor the names of its contributors may be used to endorse - * or promote products derived from this software without specific prior - * written permission. - * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED - * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF - * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. - */ - -#ifndef lint -static const char rcsid[] _U_ = - "@(#) $Header: /tcpdump/master/tcpdump/util.c,v 1.95.2.6 2006/02/08 01:40:09 hannes Exp $ (LBL)"; -#endif - -#ifdef HAVE_CONFIG_H -#include "config.h" -#endif - -#include <tcpdump-stdinc.h> - -#include <sys/stat.h> - -#include <errno.h> -#ifdef HAVE_FCNTL_H -#include <fcntl.h> -#endif -#include <pcap.h> -#include <stdio.h> -#include <stdarg.h> -#include <stdlib.h> -#include <string.h> - -#include "interface.h" - -/* - * Print out a null-terminated filename (or other ascii string). - * If ep is NULL, assume no truncation check is needed. - * Return true if truncated. - */ -int -fn_print(register const u_char *s, register const u_char *ep) -{ - register int ret; - register u_char c; - - ret = 1; /* assume truncated */ - while (ep == NULL || s < ep) { - c = *s++; - if (c == '\0') { - ret = 0; - break; - } - if (!isascii(c)) { - c = toascii(c); - putchar('M'); - putchar('-'); - } - if (!isprint(c)) { - c ^= 0x40; /* DEL to ?, others to alpha */ - putchar('^'); - } - putchar(c); - } - return(ret); -} - -/* - * Print out a counted filename (or other ascii string). - * If ep is NULL, assume no truncation check is needed. - * Return true if truncated. - */ -int -fn_printn(register const u_char *s, register u_int n, - register const u_char *ep) -{ - register u_char c; - - while (n > 0 && (ep == NULL || s < ep)) { - n--; - c = *s++; - if (!isascii(c)) { - c = toascii(c); - putchar('M'); - putchar('-'); - } - if (!isprint(c)) { - c ^= 0x40; /* DEL to ?, others to alpha */ - putchar('^'); - } - putchar(c); - } - return (n == 0) ? 0 : 1; -} - -/* - * Print out a null-padded filename (or other ascii string). - * If ep is NULL, assume no truncation check is needed. - * Return true if truncated. - */ -int -fn_printzp(register const u_char *s, register u_int n, - register const u_char *ep) -{ - register int ret; - register u_char c; - - ret = 1; /* assume truncated */ - while (n > 0 && (ep == NULL || s < ep)) { - n--; - c = *s++; - if (c == '\0') { - ret = 0; - break; - } - if (!isascii(c)) { - c = toascii(c); - putchar('M'); - putchar('-'); - } - if (!isprint(c)) { - c ^= 0x40; /* DEL to ?, others to alpha */ - putchar('^'); - } - putchar(c); - } - return (n == 0) ? 0 : ret; -} - -/* - * Print the timestamp - */ -void -ts_print(register const struct timeval *tvp) -{ - register int s; - struct tm *tm; - time_t Time; - static unsigned b_sec; - static unsigned b_usec; - - switch (tflag) { - - case 0: /* Default */ - s = (tvp->tv_sec + thiszone) % 86400; - (void)printf("%02d:%02d:%02d.%06u ", - s / 3600, (s % 3600) / 60, s % 60, - (unsigned)tvp->tv_usec); - break; - - case 1: /* No time stamp */ - break; - - case 2: /* Unix timeval style */ - (void)printf("%u.%06u ", - (unsigned)tvp->tv_sec, - (unsigned)tvp->tv_usec); - break; - - case 3: /* Microseconds since previous packet */ - if (b_sec == 0) { - printf("000000 "); - } else { - int d_usec = tvp->tv_usec - b_usec; - int d_sec = tvp->tv_sec - b_sec; - - while (d_usec < 0) { - d_usec += 1000000; - d_sec--; - } - if (d_sec) - printf("%d. ", d_sec); - printf("%06d ", d_usec); - } - b_sec = tvp->tv_sec; - b_usec = tvp->tv_usec; - break; - - case 4: /* Default + Date*/ - s = (tvp->tv_sec + thiszone) % 86400; - Time = (tvp->tv_sec + thiszone) - s; - tm = gmtime (&Time); - if (!tm) - printf("Date fail "); - else - printf("%04d-%02d-%02d ", - tm->tm_year+1900, tm->tm_mon+1, tm->tm_mday); - printf("%02d:%02d:%02d.%06u ", - s / 3600, (s % 3600) / 60, s % 60, (unsigned)tvp->tv_usec); - break; - } -} - -/* - * Print a relative number of seconds (e.g. hold time, prune timer) - * in the form 5m1s. This does no truncation, so 32230861 seconds - * is represented as 1y1w1d1h1m1s. - */ -void -relts_print(int secs) -{ - static const char *lengths[] = {"y", "w", "d", "h", "m", "s"}; - static const int seconds[] = {31536000, 604800, 86400, 3600, 60, 1}; - const char **l = lengths; - const int *s = seconds; - - if (secs == 0) { - (void)printf("0s"); - return; - } - if (secs < 0) { - (void)printf("-"); - secs = -secs; - } - while (secs > 0) { - if (secs >= *s) { - (void)printf("%d%s", secs / *s, *l); - secs -= (secs / *s) * *s; - } - s++; - l++; - } -} - -/* - * this is a generic routine for printing unknown data; - * we pass on the linefeed plus indentation string to - * get a proper output - returns 0 on error - */ - -int -print_unknown_data(const u_char *cp,const char *ident,int len) -{ - if (len < 0) { - printf("%sDissector error: print_unknown_data called with negative length", - ident); - return(0); - } - if (snapend - cp < len) - len = snapend - cp; - if (len < 0) { - printf("%sDissector error: print_unknown_data called with pointer past end of packet", - ident); - return(0); - } - hex_print(ident,cp,len); - return(1); /* everything is ok */ -} - -/* - * Convert a token value to a string; use "fmt" if not found. - */ -const char * -tok2strbuf(register const struct tok *lp, register const char *fmt, - register int v, char *buf, size_t bufsize) -{ - if (lp != NULL) { - while (lp->s != NULL) { - if (lp->v == v) - return (lp->s); - ++lp; - } - } - if (fmt == NULL) - fmt = "#%d"; - - (void)snprintf(buf, bufsize, fmt, v); - return (const char *)buf; -} - -/* - * Convert a token value to a string; use "fmt" if not found. - */ -const char * -tok2str(register const struct tok *lp, register const char *fmt, - register int v) -{ - static char buf[4][128]; - static int idx = 0; - char *ret; - - ret = buf[idx]; - idx = (idx+1) & 3; - return tok2strbuf(lp, fmt, v, ret, sizeof(buf[0])); -} - -/* - * Convert a bit token value to a string; use "fmt" if not found. - * this is useful for parsing bitfields, the output strings are comma seperated - */ -char * -bittok2str(register const struct tok *lp, register const char *fmt, - register int v) -{ - static char buf[256]; /* our stringbuffer */ - int buflen=0; - register int rotbit; /* this is the bit we rotate through all bitpositions */ - register int tokval; - - while (lp->s != NULL && lp != NULL) { - tokval=lp->v; /* load our first value */ - rotbit=1; - while (rotbit != 0) { - /* - * lets AND the rotating bit with our token value - * and see if we have got a match - */ - if (tokval == (v&rotbit)) { - /* ok we have found something */ - buflen+=snprintf(buf+buflen, sizeof(buf)-buflen, "%s, ",lp->s); - break; - } - rotbit=rotbit<<1; /* no match - lets shift and try again */ - } - lp++; - } - - if (buflen != 0) { /* did we find anything */ - /* yep, set the the trailing zero 2 bytes before to eliminate the last comma & whitespace */ - buf[buflen-2] = '\0'; - return (buf); - } - else { - /* bummer - lets print the "unknown" message as advised in the fmt string if we got one */ - if (fmt == NULL) - fmt = "#%d"; - (void)snprintf(buf, sizeof(buf), fmt, v); - return (buf); - } -} - -/* - * Convert a value to a string using an array; the macro - * tok2strary() in <interface.h> is the public interface to - * this function and ensures that the second argument is - * correct for bounds-checking. - */ -const char * -tok2strary_internal(register const char **lp, int n, register const char *fmt, - register int v) -{ - static char buf[128]; - - if (v >= 0 && v < n && lp[v] != NULL) - return lp[v]; - if (fmt == NULL) - fmt = "#%d"; - (void)snprintf(buf, sizeof(buf), fmt, v); - return (buf); -} - -/* - * Convert a 32-bit netmask to prefixlen if possible - * the function returns the prefix-len; if plen == -1 - * then conversion was not possible; - */ - -int -mask2plen (u_int32_t mask) -{ - u_int32_t bitmasks[33] = { - 0x00000000, - 0x80000000, 0xc0000000, 0xe0000000, 0xf0000000, - 0xf8000000, 0xfc000000, 0xfe000000, 0xff000000, - 0xff800000, 0xffc00000, 0xffe00000, 0xfff00000, - 0xfff80000, 0xfffc0000, 0xfffe0000, 0xffff0000, - 0xffff8000, 0xffffc000, 0xffffe000, 0xfffff000, - 0xfffff800, 0xfffffc00, 0xfffffe00, 0xffffff00, - 0xffffff80, 0xffffffc0, 0xffffffe0, 0xfffffff0, - 0xfffffff8, 0xfffffffc, 0xfffffffe, 0xffffffff - }; - int prefix_len = 32; - - /* let's see if we can transform the mask into a prefixlen */ - while (prefix_len >= 0) { - if (bitmasks[prefix_len] == mask) - break; - prefix_len--; - } - return (prefix_len); -} - -/* VARARGS */ -void -error(const char *fmt, ...) -{ - va_list ap; - - (void)fprintf(stderr, "%s: ", program_name); - va_start(ap, fmt); - (void)vfprintf(stderr, fmt, ap); - va_end(ap); - if (*fmt) { - fmt += strlen(fmt); - if (fmt[-1] != '\n') - (void)fputc('\n', stderr); - } - exit(1); - /* NOTREACHED */ -} - -/* VARARGS */ -void -warning(const char *fmt, ...) -{ - va_list ap; - - (void)fprintf(stderr, "%s: WARNING: ", program_name); - va_start(ap, fmt); - (void)vfprintf(stderr, fmt, ap); - va_end(ap); - if (*fmt) { - fmt += strlen(fmt); - if (fmt[-1] != '\n') - (void)fputc('\n', stderr); - } -} - -/* - * Copy arg vector into a new buffer, concatenating arguments with spaces. - */ -char * -copy_argv(register char **argv) -{ - register char **p; - register u_int len = 0; - char *buf; - char *src, *dst; - - p = argv; - if (*p == 0) - return 0; - - while (*p) - len += strlen(*p++) + 1; - - buf = (char *)malloc(len); - if (buf == NULL) - error("copy_argv: malloc"); - - p = argv; - dst = buf; - while ((src = *p++) != NULL) { - while ((*dst++ = *src++) != '\0') - ; - dst[-1] = ' '; - } - dst[-1] = '\0'; - - return buf; -} - -/* - * On Windows, we need to open the file in binary mode, so that - * we get all the bytes specified by the size we get from "fstat()". - * On UNIX, that's not necessary. O_BINARY is defined on Windows; - * we define it as 0 if it's not defined, so it does nothing. - */ -#ifndef O_BINARY -#define O_BINARY 0 -#endif - -char * -read_infile(char *fname) -{ - register int i, fd, cc; - register char *cp; - struct stat buf; - - fd = open(fname, O_RDONLY|O_BINARY); - if (fd < 0) - error("can't open %s: %s", fname, pcap_strerror(errno)); - - if (fstat(fd, &buf) < 0) - error("can't stat %s: %s", fname, pcap_strerror(errno)); - - cp = malloc((u_int)buf.st_size + 1); - if (cp == NULL) - error("malloc(%d) for %s: %s", (u_int)buf.st_size + 1, - fname, pcap_strerror(errno)); - cc = read(fd, cp, (u_int)buf.st_size); - if (cc < 0) - error("read %s: %s", fname, pcap_strerror(errno)); - if (cc != buf.st_size) - error("short read %s (%d != %d)", fname, cc, (int)buf.st_size); - - close(fd); - /* replace "# comment" with spaces */ - for (i = 0; i < cc; i++) { - if (cp[i] == '#') - while (i < cc && cp[i] != '\n') - cp[i++] = ' '; - } - cp[cc] = '\0'; - return (cp); -} - -void -safeputs(const char *s, int maxlen) -{ - int idx = 0; - while (*s && idx < maxlen) { - safeputchar(*s); - idx++; - s++; - } -} - -void -safeputchar(int c) -{ - unsigned char ch; - - ch = (unsigned char)(c & 0xff); - if (ch < 0x80 && isprint(ch)) - printf("%c", ch); - else - printf("\\%03o", ch); -} |