X-Git-Url: https://git.tcpdump.org/tcpdump/blobdiff_plain/230e0b85778df66f9cec62d13f0025c78cc0c9da..5ef0bcb5edd748de9d9af13c40da0395dfdd94e8:/util-print.c

diff --git a/util-print.c b/util-print.c
index ce5bfdc9..e22e535e 100644
--- a/util-print.c
+++ b/util-print.c
@@ -46,23 +46,23 @@
 #ifdef HAVE_FCNTL_H
 #include <fcntl.h>
 #endif
-#include <ctype.h>
 #include <stdio.h>
 #include <stdarg.h>
 #include <stdlib.h>
 #include <string.h>
 
+#include "netdissect-ctype.h"
+
 #include "netdissect.h"
 #include "extract.h"
 #include "ascii_strcasecmp.h"
 #include "timeval-operations.h"
 
-int32_t thiszone;		/* seconds offset from gmt to local time */
-/* invalid string to print '(invalid)' for malformed or corrupted packets */
-const char istr[] = " (invalid)";
-
 #define TOKBUFSIZE 128
 
+enum date_flag { WITHOUT_DATE = 0, WITH_DATE = 1 };
+enum time_flag { UTC_TIME = 0, LOCAL_TIME = 1 };
+
 /*
  * Print out a character, filtering out the non-printable ones
  */
@@ -73,7 +73,7 @@ fn_print_char(netdissect_options *ndo, u_char c)
 		c = ND_TOASCII(c);
 		ND_PRINT("M-");
 	}
-	if (!ND_ISPRINT(c)) {
+	if (!ND_ASCII_ISPRINT(c)) {
 		c ^= 0x40;	/* DEL to ?, others to alpha */
 		ND_PRINT("^");
 	}
@@ -110,7 +110,7 @@ nd_print(netdissect_options *ndo,
 
 	ret = 1;			/* assume truncated */
 	while (ep == NULL || s < ep) {
-		c = EXTRACT_U_1(s);
+		c = GET_U_1(s);
 		s++;
 		if (c == '\0') {
 			ret = 0;
@@ -163,7 +163,7 @@ nd_printztn(netdissect_options *ndo,
 			break;
 		}
 
-		c = EXTRACT_U_1(s);
+		c = GET_U_1(s);
 		s++;
 		bytes++;
 		n--;
@@ -191,7 +191,7 @@ nd_printn(netdissect_options *ndo,
 
 	while (n > 0 && (ep == NULL || s < ep)) {
 		n--;
-		c = EXTRACT_U_1(s);
+		c = GET_U_1(s);
 		s++;
 		fn_print_char(ndo, c);
 	}
@@ -217,7 +217,7 @@ nd_printzp(netdissect_options *ndo,
 	ret = 1;			/* assume truncated */
 	while (n > 0 && (ep == NULL || s < ep)) {
 		n--;
-		c = EXTRACT_U_1(s);
+		c = GET_U_1(s);
 		s++;
 		if (c == '\0') {
 			ret = 0;
@@ -229,59 +229,80 @@ nd_printzp(netdissect_options *ndo,
 }
 
 /*
- * Print the timestamp as HH:MM:SS.FRAC.
+ * Print the timestamp .FRAC part (Microseconds/nanoseconds)
  */
 static void
-ts_hmsfrac_print(netdissect_options *ndo, int sec, int usec)
+ts_frac_print(netdissect_options *ndo, long usec)
 {
 #ifdef HAVE_PCAP_SET_TSTAMP_PRECISION
 	switch (ndo->ndo_tstamp_precision) {
 
 	case PCAP_TSTAMP_PRECISION_MICRO:
-		ND_PRINT("%02d:%02d:%02d.%06u", sec / 3600, (sec % 3600) / 60,
-		    sec % 60, usec);
+		ND_PRINT(".%06u", (unsigned)usec);
 		break;
 
 	case PCAP_TSTAMP_PRECISION_NANO:
-		ND_PRINT("%02d:%02d:%02d.%09u", sec / 3600, (sec % 3600) / 60,
-		    sec % 60, usec);
+		ND_PRINT(".%09u", (unsigned)usec);
 		break;
 
 	default:
-		ND_PRINT("%02d:%02d:%02d.{unknown}", sec / 3600, (sec % 3600) / 60,
-		    sec % 60);
+		ND_PRINT(".{unknown}");
 		break;
 	}
 #else
-	ND_PRINT("%02d:%02d:%02d.%06u", sec / 3600, (sec % 3600) / 60,
-	    sec % 60, usec);
+	ND_PRINT(".%06u", (unsigned)usec);
 #endif
 }
 
 /*
- * Print the timestamp - Unix timeval style, as SECS.FRAC.
+ * Print the timestamp as [YY:MM:DD] HH:MM:SS.FRAC.
+ *   if time_flag == LOCAL_TIME print local time else UTC/GMT time
+ *   if date_flag == WITH_DATE print YY:MM:DD before HH:MM:SS.FRAC
  */
 static void
-ts_unix_print(netdissect_options *ndo, int sec, int usec)
+ts_date_hmsfrac_print(netdissect_options *ndo, long sec, long usec,
+		      enum date_flag date_flag, enum time_flag time_flag)
 {
-#ifdef HAVE_PCAP_SET_TSTAMP_PRECISION
-	switch (ndo->ndo_tstamp_precision) {
+	time_t Time = sec;
+	struct tm *tm;
+	char timestr[32];
 
-	case PCAP_TSTAMP_PRECISION_MICRO:
-		ND_PRINT("%u.%06u", (unsigned)sec, (unsigned)usec);
-		break;
+	if ((unsigned)sec & 0x80000000) {
+		ND_PRINT("[Error converting time]");
+		return;
+	}
 
-	case PCAP_TSTAMP_PRECISION_NANO:
-		ND_PRINT("%u.%09u", (unsigned)sec, (unsigned)usec);
-		break;
+	if (time_flag == LOCAL_TIME)
+		tm = localtime(&Time);
+	else
+		tm = gmtime(&Time);
 
-	default:
-		ND_PRINT("%u.{unknown}", (unsigned)sec);
-		break;
+	if (!tm) {
+		ND_PRINT("[Error converting time]");
+		return;
 	}
-#else
-	ND_PRINT("%u.%06u", (unsigned)sec, (unsigned)usec);
-#endif
+	if (date_flag == WITH_DATE)
+		strftime(timestr, sizeof(timestr), "%Y-%m-%d %H:%M:%S", tm);
+	else
+		strftime(timestr, sizeof(timestr), "%H:%M:%S", tm);
+	ND_PRINT("%s", timestr);
+
+	ts_frac_print(ndo, usec);
+}
+
+/*
+ * Print the timestamp - Unix timeval style, as SECS.FRAC.
+ */
+static void
+ts_unix_print(netdissect_options *ndo, long sec, long usec)
+{
+	if ((unsigned)sec & 0x80000000) {
+		ND_PRINT("[Error converting time]");
+		return;
+	}
+
+	ND_PRINT("%u", (unsigned)sec);
+	ts_frac_print(ndo, usec);
 }
 
 /*
@@ -291,9 +312,6 @@ void
 ts_print(netdissect_options *ndo,
          const struct timeval *tvp)
 {
-	int s;
-	struct tm *tm;
-	time_t Time;
 	static struct timeval tv_ref;
 	struct timeval tv_result;
 	int negative_offset;
@@ -302,8 +320,8 @@ ts_print(netdissect_options *ndo,
 	switch (ndo->ndo_tflag) {
 
 	case 0: /* Default */
-		s = (tvp->tv_sec + thiszone) % 86400;
-		ts_hmsfrac_print(ndo, s, tvp->tv_usec);
+		ts_date_hmsfrac_print(ndo, tvp->tv_sec, tvp->tv_usec,
+				      WITHOUT_DATE, LOCAL_TIME);
 		ND_PRINT(" ");
 		break;
 
@@ -342,25 +360,18 @@ ts_print(netdissect_options *ndo,
 			netdissect_timevalsub(tvp, &tv_ref, &tv_result, nano_prec);
 
 		ND_PRINT((negative_offset ? "-" : " "));
-		ts_hmsfrac_print(ndo, tv_result.tv_sec, tv_result.tv_usec);
+		ts_date_hmsfrac_print(ndo, tv_result.tv_sec, tv_result.tv_usec,
+				      WITHOUT_DATE, UTC_TIME);
 		ND_PRINT(" ");
 
                 if (ndo->ndo_tflag == 3)
 			tv_ref = *tvp; /* set timestamp for previous packet */
 		break;
 
-	case 4: /* Default + Date */
-		s = (tvp->tv_sec + thiszone) % 86400;
-		Time = (tvp->tv_sec + thiszone) - s;
-		tm = gmtime (&Time);
-		if (!tm)
-			ND_PRINT("Date fail ");
-		else {
-			ND_PRINT("%04d-%02d-%02d ",
-			    tm->tm_year+1900, tm->tm_mon+1, tm->tm_mday);
-			ts_hmsfrac_print(ndo, s, tvp->tv_usec);
-			ND_PRINT(" ");
-		}
+	case 4: /* Date + Default */
+		ts_date_hmsfrac_print(ndo, tvp->tv_sec, tvp->tv_usec,
+				      WITH_DATE, LOCAL_TIME);
+		ND_PRINT(" ");
 		break;
 	}
 }
@@ -435,6 +446,26 @@ void nd_print_trunc(netdissect_options *ndo)
 	ND_PRINT(" [|%s]", ndo->ndo_protocol);
 }
 
+/* Print the protocol name */
+void nd_print_protocol(netdissect_options *ndo)
+{
+	ND_PRINT("%s", ndo->ndo_protocol);
+}
+
+/* Print the protocol name in caps (uppercases) */
+void nd_print_protocol_caps(netdissect_options *ndo)
+{
+	const char *p;
+        for (p = ndo->ndo_protocol; *p != '\0'; p++)
+                ND_PRINT("%c", ND_ASCII_TOUPPER(*p));
+}
+
+/* Print the invalid string */
+void nd_print_invalid(netdissect_options *ndo)
+{
+	ND_PRINT(" (invalid)");
+}
+
 /*
  *  this is a generic routine for printing unknown data;
  *  we pass on the linefeed plus indentation string to
@@ -442,21 +473,20 @@ void nd_print_trunc(netdissect_options *ndo)
  */
 
 int
-print_unknown_data(netdissect_options *ndo, const u_char *cp,const char *ident,int len)
+print_unknown_data(netdissect_options *ndo, const u_char *cp,
+                   const char *ident, u_int len)
 {
-	if (len < 0) {
-          ND_PRINT("%sDissector error: print_unknown_data called with negative length",
-		    ident);
-		return(0);
-	}
-	if (ndo->ndo_snapend - cp < len)
-		len = ndo->ndo_snapend - cp;
-	if (len < 0) {
-          ND_PRINT("%sDissector error: print_unknown_data called with pointer past end of packet",
+	u_int len_to_print;
+
+	len_to_print = len;
+	if (!ND_TTEST_LEN(cp, 0)) {
+		ND_PRINT("%sDissector error: print_unknown_data called with pointer past end of packet",
 		    ident);
 		return(0);
 	}
-        hex_print(ndo, ident,cp,len);
+	if (ND_BYTES_AVAILABLE_AFTER(cp) < len_to_print)
+		len_to_print = ND_BYTES_AVAILABLE_AFTER(cp);
+	hex_print(ndo, ident, cp, len_to_print);
 	return(1); /* everything is ok */
 }
 
@@ -477,7 +507,7 @@ tok2strbuf(const struct tok *lp, const char *fmt,
 	if (fmt == NULL)
 		fmt = "#%d";
 
-	(void)nd_snprintf(buf, bufsize, fmt, v);
+	(void)snprintf(buf, bufsize, fmt, v);
 	return (const char *)buf;
 }
 
@@ -501,7 +531,7 @@ tok2str(const struct tok *lp, const char *fmt,
 
 /*
  * Convert a bit token value to a string; use "fmt" if not found.
- * this is useful for parsing bitfields, the output strings are seperated
+ * this is useful for parsing bitfields, the output strings are separated
  * if the s field is positive.
  */
 static char *
@@ -549,13 +579,13 @@ bittok2str_internal(const struct tok *lp, const char *fmt,
 
         if (bufp == buf)
             /* bummer - lets print the "unknown" message as advised in the fmt string if we got one */
-            (void)nd_snprintf(buf, sizeof(buf), fmt == NULL ? "#%08x" : fmt, v);
+            (void)snprintf(buf, sizeof(buf), fmt == NULL ? "#%08x" : fmt, v);
         return (buf);
 }
 
 /*
  * Convert a bit token value to a string; use "fmt" if not found.
- * this is useful for parsing bitfields, the output strings are not seperated.
+ * this is useful for parsing bitfields, the output strings are not separated.
  */
 char *
 bittok2str_nosep(const struct tok *lp, const char *fmt,
@@ -566,7 +596,7 @@ bittok2str_nosep(const struct tok *lp, const char *fmt,
 
 /*
  * 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.
+ * this is useful for parsing bitfields, the output strings are comma separated.
  */
 char *
 bittok2str(const struct tok *lp, const char *fmt,
@@ -591,7 +621,7 @@ tok2strary_internal(const char **lp, int n, const char *fmt,
 		return lp[v];
 	if (fmt == NULL)
 		fmt = "#%d";
-	(void)nd_snprintf(buf, sizeof(buf), fmt, v);
+	(void)snprintf(buf, sizeof(buf), fmt, v);
 	return (buf);
 }
 
@@ -673,21 +703,23 @@ fetch_token(netdissect_options *ndo, const u_char *pptr, u_int idx, u_int len,
     u_char *tbuf, size_t tbuflen)
 {
 	size_t toklen = 0;
+	u_char c;
 
 	for (; idx < len; idx++) {
 		if (!ND_TTEST_1(pptr + idx)) {
 			/* ran past end of captured data */
 			return (0);
 		}
-		if (!isascii(EXTRACT_U_1(pptr + idx))) {
+		c = GET_U_1(pptr + idx);
+		if (!ND_ISASCII(c)) {
 			/* not an ASCII character */
 			return (0);
 		}
-		if (isspace(EXTRACT_U_1(pptr + idx))) {
+		if (c == ' ' || c == '\t' || c == '\r' || c == '\n') {
 			/* end of token */
 			break;
 		}
-		if (!isprint(EXTRACT_U_1(pptr + idx))) {
+		if (!ND_ASCII_ISPRINT(c)) {
 			/* not part of a command token or response code */
 			return (0);
 		}
@@ -695,7 +727,7 @@ fetch_token(netdissect_options *ndo, const u_char *pptr, u_int idx, u_int len,
 			/* no room for this character and terminating '\0' */
 			return (0);
 		}
-		tbuf[toklen] = EXTRACT_U_1(pptr + idx);
+		tbuf[toklen] = c;
 		toklen++;
 	}
 	if (toklen == 0) {
@@ -713,15 +745,16 @@ fetch_token(netdissect_options *ndo, const u_char *pptr, u_int idx, u_int len,
 			/* ran past end of captured data */
 			break;
 		}
-		if (EXTRACT_U_1(pptr + idx) == '\r' || EXTRACT_U_1(pptr + idx) == '\n') {
+		c = GET_U_1(pptr + idx);
+		if (c == '\r' || c == '\n') {
 			/* end of line */
 			break;
 		}
-		if (!isascii(EXTRACT_U_1(pptr + idx)) || !isprint(EXTRACT_U_1(pptr + idx))) {
+		if (!ND_ASCII_ISPRINT(c)) {
 			/* not a printable ASCII character */
 			break;
 		}
-		if (!isspace(EXTRACT_U_1(pptr + idx))) {
+		if (c != ' ' && c != '\t' && c != '\r' && c != '\n') {
 			/* beginning of next token */
 			break;
 		}
@@ -736,16 +769,17 @@ fetch_token(netdissect_options *ndo, const u_char *pptr, u_int idx, u_int len,
  * the line ending.
  */
 static u_int
-print_txt_line(netdissect_options *ndo, const char *protoname,
-    const char *prefix, const u_char *pptr, u_int idx, u_int len)
+print_txt_line(netdissect_options *ndo, const char *prefix,
+	       const u_char *pptr, u_int idx, u_int len)
 {
 	u_int startidx;
 	u_int linelen;
+	u_char c;
 
 	startidx = idx;
 	while (idx < len) {
-		ND_TCHECK_1(pptr + idx);
-		if (EXTRACT_U_1(pptr + idx) == '\n') {
+		c = GET_U_1(pptr + idx);
+		if (c == '\n') {
 			/*
 			 * LF without CR; end of line.
 			 * Skip the LF and print the line, with the
@@ -754,14 +788,13 @@ print_txt_line(netdissect_options *ndo, const char *protoname,
 			linelen = idx - startidx;
 			idx++;
 			goto print;
-		} else if (EXTRACT_U_1(pptr + idx) == '\r') {
+		} else if (c == '\r') {
 			/* CR - any LF? */
 			if ((idx+1) >= len) {
 				/* not in this packet */
 				return (0);
 			}
-			ND_TCHECK_1(pptr + idx + 1);
-			if (EXTRACT_U_1(pptr + idx + 1) == '\n') {
+			if (GET_U_1(pptr + idx + 1) == '\n') {
 				/*
 				 * CR-LF; end of line.
 				 * Skip the CR-LF and print the line, with
@@ -778,9 +811,7 @@ print_txt_line(netdissect_options *ndo, const char *protoname,
 			 * it.
 			 */
 			return (0);
-		} else if (!isascii(EXTRACT_U_1(pptr + idx)) ||
-			   (!isprint(EXTRACT_U_1(pptr + idx)) &&
-			    EXTRACT_U_1(pptr + idx) != '\t')) {
+		} else if (!ND_ASCII_ISPRINT(c) && c != '\t') {
 			/*
 			 * Not a printable ASCII character and not a tab;
 			 * treat this as if it were binary data, and
@@ -795,10 +826,9 @@ print_txt_line(netdissect_options *ndo, const char *protoname,
 	 * All printable ASCII, but no line ending after that point
 	 * in the buffer; treat this as if it were truncated.
 	 */
-trunc:
 	linelen = idx - startidx;
-	ND_PRINT("%s%.*s[!%s]", prefix, (int)linelen, pptr + startidx,
-	    protoname);
+	ND_PRINT("%s%.*s", prefix, (int)linelen, pptr + startidx);
+	nd_print_trunc(ndo);
 	return (0);
 
 print:
@@ -806,15 +836,15 @@ print:
 	return (idx);
 }
 
+/* Assign needed before calling txtproto_print(): ndo->ndo_protocol = "proto" */
 void
 txtproto_print(netdissect_options *ndo, const u_char *pptr, u_int len,
-    const char *protoname, const char **cmds, u_int flags)
+	       const char **cmds, u_int flags)
 {
 	u_int idx, eol;
 	u_char token[MAX_TOKEN+1];
 	const char *cmd;
 	int print_this = 0;
-	const char *pnp;
 
 	if (cmds != NULL) {
 		/*
@@ -854,8 +884,8 @@ txtproto_print(netdissect_options *ndo, const u_char *pptr, u_int len,
 				    sizeof(token));
 			}
 			if (idx != 0) {
-				if (isdigit(token[0]) && isdigit(token[1]) &&
-				    isdigit(token[2]) && token[3] == '\0') {
+				if (ND_ASCII_ISDIGIT(token[0]) && ND_ASCII_ISDIGIT(token[1]) &&
+				    ND_ASCII_ISDIGIT(token[2]) && token[3] == '\0') {
 					/* Yes. */
 					print_this = 1;
 				}
@@ -879,9 +909,7 @@ txtproto_print(netdissect_options *ndo, const u_char *pptr, u_int len,
 		print_this = 1;
 	}
 
-	/* Capitalize the protocol name */
-	for (pnp = protoname; *pnp != '\0'; pnp++)
-		ND_PRINT("%c", toupper((u_char)*pnp));
+	nd_print_protocol_caps(ndo);
 
 	if (print_this) {
 		/*
@@ -900,14 +928,14 @@ txtproto_print(netdissect_options *ndo, const u_char *pptr, u_int len,
 			 */
 			ND_PRINT(", length: %u", len);
 			for (idx = 0;
-			    idx < len && (eol = print_txt_line(ndo, protoname, "\n\t", pptr, idx, len)) != 0;
+			    idx < len && (eol = print_txt_line(ndo, "\n\t", pptr, idx, len)) != 0;
 			    idx = eol)
 				;
 		} else {
 			/*
 			 * Just print the first text line.
 			 */
-			print_txt_line(ndo, protoname, ": ", pptr, 0, len);
+			print_txt_line(ndo, ": ", pptr, 0, len);
 		}
 	}
 }