wget: attempt to negotiate encrypted data ftps stream ("PROT P")

function                                             old     new   delta
wget_main                                           2382    2422     +40

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

1 files changed, 7 insertions, 3 deletions

diff --git a/networking/wget.c b/networking/wget.c
index 7ca4bfb33..633dabb57 100644
--- a/networking/wget.c
+++ b/networking/wget.c
@@ -806,9 +806,13 @@ static FILE* prepare_ftp_session(FILE **dfpp, struct host_info *target, len_and_
 
         *dfpp = open_socket(lsa);
 
-        //For encrypted data, need to send "PROT P" and get "200 PROT now Private" response first
-        //Without it (or with "PROT C"), data is sent unencrypted
-        //spawn_ssl_client(target->host, fileno(*dfpp), /*flags*/ 0);
+#if ENABLE_FEATURE_WGET_HTTPS
+        /* "PROT P" enables encryption of data stream.
+         * Without it (or with "PROT C"), data is sent unencrypted.
+         */
+        if (ftpcmd("PROT P", NULL, sfp) == 200)
+                spawn_ssl_client(target->host, fileno(*dfpp), /*flags*/ 0);
+#endif
 
         if (G.beg_range != 0) {
                 sprintf(G.wget_buf, "REST %"OFF_FMT"u", G.beg_range);