ftpd: conditional support for broken clients

Signed-off-by: Stefan Seyfried <stefan.seyfried@googlemail.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

1 files changed, 12 insertions, 0 deletions

diff --git a/networking/ftpd.c b/networking/ftpd.c
index 4e9f65ca3..fdc6f5e45 100644
--- a/networking/ftpd.c
+++ b/networking/ftpd.c
@@ -632,6 +632,18 @@ popen_ls(const char *opt)
         argv[3] = G.ftp_arg;
         argv[4] = NULL;
 
+        /* Improve compatibility with non-RFC conforming FTP clients
+         * which send e.g. "LIST -l", "LIST -la".
+         * See https://bugs.kde.org/show_bug.cgi?id=195578 */
+        if (ENABLE_FEATURE_FTPD_ACCEPT_BROKEN_LIST
+         && G.ftp_arg && G.ftp_arg[0] == '-' && G.ftp_arg[1] == 'l'
+        ) {
+                const char *tmp = strchr(G.ftp_arg, ' ');
+                if (tmp) /* skip the space */
+                        tmp++;
+                argv[3] = tmp;
+        }
+
         xpiped_pair(outfd);
 
         /*fflush_all(); - so far we dont use stdio on output */