From 6b88b740f6b63731064e1d5267c057a6a86e7cf6 Mon Sep 17 00:00:00 2001
From: Markus Uhlin <markus@nifty-networks.net>
Date: Sun, 7 Jul 2024 12:54:02 +0200
Subject: Added parameter 'size' to psprintf_highlight() and replaced unbounded
 string handling functions

---
 FICS/comproc.c | 11 ++++++-----
 FICS/utils.c   | 22 ++++++++++++----------
 FICS/utils.h   |  4 ++--
 3 files changed, 20 insertions(+), 17 deletions(-)

(limited to 'FICS')

diff --git a/FICS/comproc.c b/FICS/comproc.c
index c778502..405a59f 100644
--- a/FICS/comproc.c
+++ b/FICS/comproc.c
@@ -845,8 +845,8 @@ who_terse(int p, int num, int *plist, int type)
 		}
 
 		if (p == p1) {
-			psprintf_highlight(p, ptmp + strlen(ptmp), "%s",
-			    parray[p1].name);
+			psprintf_highlight(p, ptmp + strlen(ptmp),
+			    sizeof ptmp - strlen(ptmp), "%s", parray[p1].name);
 		} else {
 			strlcat(ptmp, parray[p1].name, sizeof ptmp);
 		}
@@ -909,8 +909,8 @@ who_verbose(int p, int num, int plist[])
 
 		if (p == p1) {
 			strlcpy(tmp, " ", sizeof tmp);
-			psprintf_highlight(p, tmp + strlen(tmp), "%-17s",
-			    p1WithAttrs);
+			psprintf_highlight(p, tmp + strlen(tmp),
+			    sizeof tmp - strlen(tmp), "%-17s", p1WithAttrs);
 		} else {
 			ret = snprintf(tmp, sizeof tmp, " %-17s", p1WithAttrs);
 
@@ -968,7 +968,8 @@ who_winloss(int p, int num, int plist[])
 		p1WithAttrs[17] = '\0';
 
 		if (p1 == p) {
-			psprintf_highlight(p, playerLine, "%-17s", p1WithAttrs);
+			psprintf_highlight(p, playerLine, sizeof playerLine,
+			    "%-17s", p1WithAttrs);
 		} else {
 			snprintf(playerLine, sizeof playerLine, "%-17s",
 			    p1WithAttrs);
diff --git a/FICS/utils.c b/FICS/utils.c
index e81781f..29fe60c 100644
--- a/FICS/utils.c
+++ b/FICS/utils.c
@@ -315,35 +315,37 @@ pprintf_highlight(int p, char *format, ...)
 }
 
 PRIVATE void
-sprintf_dohightlight(int p, char *s)
+sprintf_dohightlight(int p, char *s, size_t size)
 {
 	if (parray[p].highlight & 0x01)
-		strcat(s, "\033[7m");
+		strlcat(s, "\033[7m", size);
 	if (parray[p].highlight & 0x02)
-		strcat(s, "\033[1m");
+		strlcat(s, "\033[1m", size);
 	if (parray[p].highlight & 0x04)
-		strcat(s, "\033[4m");
+		strlcat(s, "\033[4m", size);
 	if (parray[p].highlight & 0x08)
-		strcat(s, "\033[2m");
+		strlcat(s, "\033[2m", size);
 }
 
 PUBLIC int
-psprintf_highlight(int p, char *s, char *format, ...)
+psprintf_highlight(int p, char *s, size_t size, char *format, ...)
 {
 	int retval;
 	va_list ap;
 
 	if (parray[p].highlight) {
-		sprintf_dohightlight(p, s);
+		char tmp[1000] = { '\0' };
 
 		va_start(ap, format);
-		retval = vsprintf(s + strlen(s), format, ap);
+		retval = vsnprintf(tmp, sizeof tmp, format, ap);
 		va_end(ap);
 
-		strcat(s, "\033[0m");
+		sprintf_dohightlight(p, s, size);
+		strlcat(s, tmp, size);
+		strlcat(s, "\033[0m", size);
 	} else {
 		va_start(ap, format);
-		retval = vsprintf(s, format, ap);
+		retval = vsnprintf(s, size, format, ap);
 		va_end(ap);
 	}
 
diff --git a/FICS/utils.h b/FICS/utils.h
index c6a673b..88f3cc9 100644
--- a/FICS/utils.h
+++ b/FICS/utils.h
@@ -96,8 +96,8 @@ extern int		 psend_command(int, char *, char *);
 extern int		 psend_file(int, char *, char *);
 extern int		 psend_logoutfile(int, char *, char *);
 extern int		 psend_raw_file(int, char *, char *);
-extern int		 psprintf_highlight(int, char *, char *, ...)
-			     PRINTFLIKE(3);
+extern int		 psprintf_highlight(int, char *, size_t, char *, ...)
+			     PRINTFLIKE(4);
 extern int		 safechar(int);
 extern int		 safestring(char *);
 extern int		 search_directory(char *, char *, char **, int);
-- 
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