svn commit: r270256 - in head: bin/ed libexec/rtld-elf usr.bin/mail

[Pedro F. Giffuni]

Author: pfg
Date: Thu Aug 21 02:40:33 2014
New Revision: 270256
URL: http://svnweb.freebsd.org/changeset/base/270256

Log:
  Always check the limits of array index variables before using them.
  
  Obtained from:	DragonFlyBSD
  MFC after:	1 week

Modified:
  head/bin/ed/cbc.c
  head/libexec/rtld-elf/libmap.c
  head/usr.bin/mail/edit.c

Modified: head/bin/ed/cbc.c
==============================================================================
--- head/bin/ed/cbc.c	Thu Aug 21 01:07:27 2014	(r270255)
+++ head/bin/ed/cbc.c	Thu Aug 21 02:40:33 2014	(r270256)
@@ -237,7 +237,7 @@ expand_des_key(char *obuf, char *kbuf)
 		/*
 		 * now translate it, bombing on any illegal hex digit
 		 */
-		for (i = 0; kbuf[i] && i < 16; i++)
+		for (i = 0; i < 16 && kbuf[i]; i++)
 			if ((nbuf[i] = hex_to_binary((int) kbuf[i], 16)) == -1)
 				des_error("bad hex digit in key");
 		while (i < 16)

Modified: head/libexec/rtld-elf/libmap.c
==============================================================================
--- head/libexec/rtld-elf/libmap.c	Thu Aug 21 01:07:27 2014	(r270255)
+++ head/libexec/rtld-elf/libmap.c	Thu Aug 21 02:40:33 2014	(r270256)
@@ -216,14 +216,14 @@ lmc_parse(char *lm_p, size_t lm_len)
 	p = NULL;
 	while (cnt < lm_len) {
 		i = 0;
-		while (lm_p[cnt] != '\n' && cnt < lm_len &&
+		while (cnt < lm_len && lm_p[cnt] != '\n' &&
 		    i < sizeof(line) - 1) {
 			line[i] = lm_p[cnt];
 			cnt++;
 			i++;
 		}
 		line[i] = '\0';
-		while (lm_p[cnt] != '\n' && cnt < lm_len)
+		while (cnt < lm_len && lm_p[cnt] != '\n')
 			cnt++;
 		/* skip over nl */
 		cnt++;

Modified: head/usr.bin/mail/edit.c
==============================================================================
--- head/usr.bin/mail/edit.c	Thu Aug 21 01:07:27 2014	(r270255)
+++ head/usr.bin/mail/edit.c	Thu Aug 21 02:40:33 2014	(r270256)
@@ -81,7 +81,7 @@ edit1(int *msgvec, int type)
 	/*
 	 * Deal with each message to be edited . . .
 	 */
-	for (i = 0; msgvec[i] && i < msgCount; i++) {
+	for (i = 0; i < msgCount && msgvec[i]; i++) {
 		sig_t sigint;
 
 		if (i > 0) {