fix buffer handling for time formatting

diff --git a/file.c b/file.c
index b46f0d671ca9e4861399ab32b3fc842e8c7852c7..367ab3ec223e7a8ccb85b409fbc2eca9eb8c6cef 100644 (file)
--- a/file.c
+++ b/file.c
@@ -293,11 +293,11 @@ static time_t uh_file_date2unix(const char *date)
        return 0;
 }
 
-static char * uh_file_unix2date(time_t ts, char *buf)
+static char * uh_file_unix2date(time_t ts, char *buf, int len)
 {
        struct tm *t = gmtime(&ts);
 
-       strftime(buf, sizeof(buf), "%a, %d %b %Y %H:%M:%S GMT", t);
+       strftime(buf, len, "%a, %d %b %Y %H:%M:%S GMT", t);
 
        return buf;
 }
@@ -317,9 +317,10 @@ static void uh_file_response_ok_hdrs(struct client *cl, struct stat *s)
        if (s) {
                ustream_printf(cl->us, "ETag: %s\r\n", uh_file_mktag(s, buf));
                ustream_printf(cl->us, "Last-Modified: %s\r\n",
-                              uh_file_unix2date(s->st_mtime, buf));
+                              uh_file_unix2date(s->st_mtime, buf, sizeof(buf)));
        }
-       ustream_printf(cl->us, "Date: %s\r\n", uh_file_unix2date(time(NULL), buf));
+       ustream_printf(cl->us, "Date: %s\r\n",
+                      uh_file_unix2date(time(NULL), buf, sizeof(buf)));
 }
 
 static void uh_file_response_200(struct client *cl, struct stat *s)
@@ -482,7 +483,7 @@ static void uh_file_dirlist(struct client *cl, struct path_info *pi)
                                        "<br /></small></li>",
                                        pi->name, files[i]->d_name,
                                        files[i]->d_name,
-                                       uh_file_unix2date(s.st_mtime, buf),
+                                       uh_file_unix2date(s.st_mtime, buf, sizeof(buf)),
                                        s.st_size / 1024.0);
 
                        *pathptr = 0;
@@ -501,7 +502,7 @@ static void uh_file_dirlist(struct client *cl, struct path_info *pi)
                                        "<br /></small></li>",
                                        pi->name, files[i]->d_name,
                                        files[i]->d_name,
-                                       uh_file_unix2date(s.st_mtime, buf),
+                                       uh_file_unix2date(s.st_mtime, buf, sizeof(buf)),
                                        uh_file_mime_lookup(filename),
                                        s.st_size / 1024.0);