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Add a missing check for a pathname being too long.
[tinc]
/
src
/
conf.c
diff --git
a/src/conf.c
b/src/conf.c
index
58d7b6d
..
3f81877
100644
(file)
--- a/
src/conf.c
+++ b/
src/conf.c
@@
-467,9
+467,14
@@
static void disable_old_keys(const char *filename) {
return;
}
return;
}
- snprintf(tmpfile, sizeof(tmpfile), "%s.tmp", filename);
+
int len =
snprintf(tmpfile, sizeof(tmpfile), "%s.tmp", filename);
- w = fopen(tmpfile, "w");
+ if(len < 0 || len >= PATH_MAX) {
+ fprintf(stderr, "Pathname too long: %s.tmp\n", filename);
+ w = NULL;
+ } else {
+ w = fopen(tmpfile, "w");
+ }
while(fgets(buf, sizeof(buf), r)) {
if(!strncmp(buf, "-----BEGIN RSA", 14)) {
while(fgets(buf, sizeof(buf), r)) {
if(!strncmp(buf, "-----BEGIN RSA", 14)) {