From: Wilfried Göesgens <willi@citadel.org>
Date: Thu, 25 Mar 2010 22:53:51 +0000 (+0000)
Subject: * html_to_ascii(): don't buffer underrun while checking whether we should append... 
X-Git-Tag: v7.86~286
X-Git-Url: https://code.citadel.org/?a=commitdiff_plain;h=e71b873f193234c0ad23d442cbeb0c68fbc0215b;p=citadel.git

* html_to_ascii(): don't buffer underrun while checking whether we should append a trailing newline or not.
---

diff --git a/libcitadel/lib/html_to_ascii.c b/libcitadel/lib/html_to_ascii.c
index 90d1103f5..86cbdedee 100644
--- a/libcitadel/lib/html_to_ascii.c
+++ b/libcitadel/lib/html_to_ascii.c
@@ -570,7 +570,7 @@ char *html_to_ascii(char *inputmsg, int msglen, int screenwidth, int do_citaform
 		--output_len;
 	}
 
-	if (outptr[output_len-1] != '\n') {
+	if ((output_len > 0) && (outptr[output_len-1] != '\n')) {
 		strcat(outptr, "\n");
 		++output_len;
 	}