net: Make copy_filename() accept NULL src

Rather than crashing, check the src ptr and set dst to empty string. Signed-off-by: Joe Hershberger <joe.hershberger@ni.com>

net: Make copy_filename() accept NULL src
Rather than crashing, check the src ptr and set dst to empty string. Signed-off-by: Joe Hershberger <joe.hershberger@ni.com>
Joe Hershberger
1 parent 3855cad623
Showing 1 changed file with 2 additions and 2 deletions Side-by-side Diff
net/net.c
@@ -1522,12 +1522,12 @@
  
 void copy_filename(char *dst, const char *src, int size)
 {
-	if (*src && (*src == '"')) {
+	if (src && *src && (*src == '"')) {
 		++src;
 		--size;
 	}
  
-	while ((--size > 0) && *src && (*src != '"'))
+	while ((--size > 0) && src && *src && (*src != '"'))
 		*dst++ = *src++;
 	*dst = '\0';
 }
...	...	@@ -1522,12 +1522,12 @@
1522	1522
1523	1523	void copy_filename(char dst, const char src, int size)
1524	1524	{
1525		- if (src && (src == '"')) {
	1525	+ if (src && src && (src == '"')) {
1526	1526	++src;
1527	1527	--size;
1528	1528	}
1529	1529
1530		- while ((--size > 0) && src && (src != '"'))
	1530	+ while ((--size > 0) && src && src && (src != '"'))
1531	1531	dst++ = src++;
1532	1532	*dst = '\0';
1533	1533	}