From b6076579311029aa76c00377d9a804b1578bf58f Mon Sep 17 00:00:00 2001
From: Werner Koch <wk@gnupg.org>
Date: Mon, 29 Jun 2015 21:26:09 +0200
Subject: [PATCH] agent: Prepare for Libassuan with Cygwin support.

* agent/gpg-agent.c (create_server_socket): Add arg "cygwin".  Call
assuan_sock_set_flag if Assuan version is recent enough.
(main): Create ssh server socket with Cygwin flag set.

Signed-off-by: Werner Koch <wk@gnupg.org>
---
 agent/gpg-agent.c | 22 +++++++++++++++-------
 g10/gpg.c         |  1 -
 2 files changed, 15 insertions(+), 8 deletions(-)

diff --git a/agent/gpg-agent.c b/agent/gpg-agent.c
index 4c2f67833..c3ab1759e 100644
--- a/agent/gpg-agent.c
+++ b/agent/gpg-agent.c
@@ -374,7 +374,7 @@ static int active_connections;
  */
 
 static char *create_socket_name (char *standard_name, int with_homedir);
-static gnupg_fd_t create_server_socket (char *name, int primary,
+static gnupg_fd_t create_server_socket (char *name, int primary, int cygwin,
                                         char **r_redir_name,
                                         assuan_sock_nonce_t *nonce);
 static void create_directories (void);
@@ -1185,14 +1185,14 @@ main (int argc, char **argv )
 
       /* Create the sockets.  */
       socket_name = create_socket_name (GPG_AGENT_SOCK_NAME, 1);
-      fd = create_server_socket (socket_name, 1,
+      fd = create_server_socket (socket_name, 1, 0,
                                  &redir_socket_name, &socket_nonce);
 
       if (opt.extra_socket)
         {
           socket_name_extra = create_socket_name (socket_name_extra, 0);
           opt.extra_socket = 2; /* Indicate that it has been malloced.  */
-          fd_extra = create_server_socket (socket_name_extra, 0,
+          fd_extra = create_server_socket (socket_name_extra, 0, 0,
                                            &redir_socket_name_extra,
                                            &socket_nonce_extra);
         }
@@ -1201,7 +1201,7 @@ main (int argc, char **argv )
         {
           socket_name_browser = create_socket_name (socket_name_browser, 0);
           opt.browser_socket = 2; /* Indicate that it has been malloced.  */
-          fd_browser = create_server_socket (socket_name_browser, 0,
+          fd_browser = create_server_socket (socket_name_browser, 0, 0,
                                              &redir_socket_name_browser,
                                              &socket_nonce_browser);
         }
@@ -1209,7 +1209,7 @@ main (int argc, char **argv )
       if (ssh_support)
         {
           socket_name_ssh = create_socket_name (GPG_AGENT_SSH_SOCK_NAME, 1);
-          fd_ssh = create_server_socket (socket_name_ssh, 0,
+          fd_ssh = create_server_socket (socket_name_ssh, 0, 1,
                                          &redir_socket_name_ssh,
                                          &socket_nonce_ssh);
         }
@@ -1645,9 +1645,10 @@ create_socket_name (char *standard_name, int with_homedir)
    function needs to be used for the regular socket first (indicated
    by PRIMARY) and only then for the extra and the ssh sockets.  If
    the socket has been redirected the name of the real socket is
-   stored as a malloced string at R_REDIR_NAME.  */
+   stored as a malloced string at R_REDIR_NAME.  If CYGWIN is set a
+   Cygwin compatible socket is created (Windows only). */
 static gnupg_fd_t
-create_server_socket (char *name, int primary,
+create_server_socket (char *name, int primary, int cygwin,
                       char **r_redir_name, assuan_sock_nonce_t *nonce)
 {
   struct sockaddr *addr;
@@ -1667,6 +1668,13 @@ create_server_socket (char *name, int primary,
       agent_exit (2);
     }
 
+#if ASSUAN_VERSION_NUMBER >= 0x020300 /* >= 2.3.0 */
+  if (cygwin)
+    assuan_sock_set_flag (fd, "cygwin", 1);
+#else
+  (void)cygwin;
+#endif
+
   unaddr = xmalloc (sizeof *unaddr);
   addr = (struct sockaddr*)unaddr;
 
diff --git a/g10/gpg.c b/g10/gpg.c
index f9d9be34d..d446e364d 100644
--- a/g10/gpg.c
+++ b/g10/gpg.c
@@ -1109,7 +1109,6 @@ set_debug (const char *level)
 {
   int numok = (level && digitp (level));
   int numlvl = numok? atoi (level) : 0;
-  int i;
 
   if (!level)
     ;