Fix commandline parsing of debug channels and prevent buffer overflow

1 files changed, 20 insertions, 3 deletions

diff --git a/server/src/debug.cc b/server/src/debug.cc
index 9c2f268..6207a1e 100644
--- a/server/src/debug.cc
+++ b/server/src/debug.cc
@@ -1,3 +1,20 @@
+/*
+ *  This file is part of Pracro.
+ *
+ *  Pracro is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or
+ *  (at your option) any later version.
+ *
+ *  Pracro is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with Pracro; if not, write to the Free Software
+ *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA.
+ */
 
 #include <config.h>
 
@@ -25,7 +42,7 @@ static int __pracro_debug_enabled(const enum __pracro_debug_class cl, const char
 	unsigned i;
 	for(i = 0; i < n_debug_channel; i++) {
 		if(!strcmp(ch, debug_channel[i].name)) {
-			return debug_channel[i].flags & (1 << cl);
+			return (debug_channel[i].flags & (1 << cl)) != 0;
 		}
 	}
 	return debug_flags & (1 << cl);
@@ -125,7 +142,7 @@ void pracro_debug_parse(const char *fmt)
 		int set = 0;
 		int clr = 0;
 		unsigned i;
-		if((next = strchr(s, ','))) *next++ = '\0';
+		if((next = strchr(opt, ','))) *next++ = '\0';
 		char *p = opt + strcspn(opt, "+-");
 		if(!*p) p = opt;	/* All chars -> a channel name */
 		if(p > opt) {
@@ -161,7 +178,7 @@ void pracro_debug_parse(const char *fmt)
 					break;
 				}
 			}
-			if(i == n_debug_channel) {
+			if(i == n_debug_channel && n_debug_channel < __PRACRO_DEBUG_CHANNEL_MAX) {
 				strcpy(debug_channel[i].name, p);
 				debug_channel[i].flags = (debug_flags & ~clr) | set;
 				n_debug_channel++;