From: NeilBrown <neil@brown.name>
Date: Sat, 19 Aug 2023 22:39:41 +0000 (+1000)
Subject: lib-renderline: handle garbage better in cvt()
X-Git-Url: http://git.neil.brown.name/?a=commitdiff_plain;h=d33c35a1d66c311fec16839f73291b8d0f16f516;p=edlib.git

lib-renderline: handle garbage better in cvt()

cvt() shouldn't assume a well-formatted string, and must always quite
when it sees EOL.

Signed-off-by: NeilBrown <neil@brown.name>
---

diff --git a/lib-renderline.c b/lib-renderline.c
index 1708c1b0..501155bf 100644
--- a/lib-renderline.c
+++ b/lib-renderline.c
@@ -1229,15 +1229,18 @@ static char *cvt(char *str safe)
 		if (c[0] != '<')
 			continue;
 		if (c[1] == '/') {
-			c[0] = ack;
-			c[1] = ack;
-			c[2] = etx;
-			c += 2;
+			while (*c && *c != '>')
+				*c++ = ack;
+			if (!*c)
+				break;
+			*c = etx;
 			continue;
 		}
 		c[0] = soh;
 		while (c[0] && c[1] != '>')
 			c++;
+		if (!c[0])
+			break;
 		c[1] = stx;
 	}
 	return str;