X-Git-Url: https://git.tcpdump.org/tcpdump/blobdiff_plain/3cd171317f54bc968808d49e3ca87b6c49ccdcdd..012652d39b74a464154c8c4d1d73b81a37a341ef:/util.c

diff --git a/util.c b/util.c
index c205615a..e8515f18 100644
--- a/util.c
+++ b/util.c
@@ -21,19 +21,17 @@
 
 #ifndef lint
 static const char rcsid[] =
-    "@(#) $Header: /tcpdump/master/tcpdump/util.c,v 1.68 2000-07-01 03:39:12 assar Exp $ (LBL)";
+    "@(#) $Header: /tcpdump/master/tcpdump/util.c,v 1.78 2002-08-02 04:22:11 guy Exp $ (LBL)";
 #endif
 
 #ifdef HAVE_CONFIG_H
 #include "config.h"
 #endif
 
-#include <sys/types.h>
-#include <sys/time.h>
-#include <sys/file.h>
+#include <tcpdump-stdinc.h>
+
 #include <sys/stat.h>
 
-#include <ctype.h>
 #include <errno.h>
 #ifdef HAVE_FCNTL_H
 #include <fcntl.h>
@@ -46,7 +44,6 @@ static const char rcsid[] =
 #ifdef TIME_WITH_SYS_TIME
 #include <time.h>
 #endif
-#include <unistd.h>
 
 #include "interface.h"
 
@@ -145,7 +142,7 @@ ts_print(register const struct timeval *tvp)
 		} 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--;
@@ -178,15 +175,19 @@ ts_print(register const struct timeval *tvp)
 void
 relts_print(int secs)
 {
-	static char *lengths[] = {"y", "w", "d", "h", "m", "s"};
-	static int seconds[] = {31536000, 604800, 86400, 3600, 60, 1};
-	char **l = lengths;
-	int *s = seconds;
+	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) {
+	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);
@@ -197,6 +198,34 @@ relts_print(int secs)
 	}
 }
 
+/*
+ *  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 *lf,int len)
+{
+        int i;
+
+	printf("%s0x0000: ",lf);
+	for(i=0;i<len;i++) {
+	    if (!TTEST2(*(cp+i), 1)) {
+              printf("%spacket exceeded snapshot",lf);
+              return(0);
+            }
+	    printf("%02x",*(cp+i));
+	    if (i%2)
+	        printf(" ");
+	    if (i/16!=(i+1)/16) {
+	        if (i<(len-1))
+		    printf("%s0x%04x: ",lf,i);
+	    }
+	}
+	return(1); /* everything is ok */
+}
+
 /*
  * Convert a token value to a string; use "fmt" if not found.
  */
@@ -217,9 +246,28 @@ tok2str(register const struct tok *lp, register const char *fmt,
 	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);
+}
 
 /* VARARGS */
-__dead void
+void
 error(const char *fmt, ...)
 {
 	va_list ap;
@@ -303,11 +351,23 @@ read_infile(char *fname)
 		error("can't stat %s: %s", fname, pcap_strerror(errno));
 
 	cp = malloc((u_int)buf.st_size + 1);
-	cc = read(fd, cp, (int)buf.st_size);
+	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)
+#ifndef WIN32
 		error("short read %s (%d != %d)", fname, cc, (int)buf.st_size);
+#else
+/* Windows seems not to like the final \xa character */
+	{
+		char *pdest;
+		pdest=strchr( cp, '\xa');
+		*pdest=0;
+	}
+#endif /* WIN32 */
 	cp[(int)buf.st_size] = '\0';
 
 	return (cp);
@@ -328,8 +388,8 @@ safeputchar(int c)
 	unsigned char ch;
 
 	ch = (unsigned char)(c & 0xff);
-	if (c < 0x80 && isprint(c))
-		printf("%c", c & 0xff);
+	if (ch < 0x80 && isprint(ch))
+		printf("%c", ch);
 	else
-		printf("\\%03o", c & 0xff);
+		printf("\\%03o", ch);
 }