Fix: sftp: password ask too often if hostname was bring from ~/.ssh/config file

Signed-off-by: Slava Zanko <slavazanko@gmail.com>

lib/glibcompat.c

@@ -1,11 +1,11 @@
 /*
    GLIB - Library of useful routines for C programming
 
-   Copyright (C) 2009, 2011
+   Copyright (C) 2009, 2011, 2013
    The Free Software Foundation, Inc.
 
    Written by:
-   Slava Zanko <slavazanko@gmail.com>, 2009.
+   Slava Zanko <slavazanko@gmail.com>, 2009, 2013.
 
    This file is part of the Midnight Commander.
 
@@ -31,6 +31,7 @@
  */
 
 #include <config.h>
+#include <string.h>
 
 #include "global.h"
 #include "glibcompat.h"
@@ -68,3 +69,30 @@ g_unichar_iszerowidth (gunichar c)
 #endif /* ! GLIB_CHECK_VERSION (2, 13, 0) */
 
 /* --------------------------------------------------------------------------------------------- */
+
+#if ! GLIB_CHECK_VERSION (2, 16, 0)
+/**
+ * g_strcmp0:
+ * @str1: (allow-none): a C string or %NULL
+ * @str2: (allow-none): another C string or %NULL
+ *
+ * Compares @str1 and @str2 like strcmp(). Handles %NULL
+ * gracefully by sorting it before non-%NULL strings.
+ * Comparing two %NULL pointers returns 0.
+ *
+ * Returns: an integer less than, equal to, or greater than zero, if @str1 is <, == or > than @str2.
+ *
+ * Since: 2.16
+ */
+int
+g_strcmp0 (const char *str1, const char *str2)
+{
+    if (!str1)
+        return -(str1 != str2);
+    if (!str2)
+        return str1 != str2;
+    return strcmp (str1, str2);
+}
+#endif /* ! GLIB_CHECK_VERSION (2, 16, 0) */
+
+/* --------------------------------------------------------------------------------------------- */

lib/glibcompat.h

@@ -15,6 +15,10 @@
 gboolean g_unichar_iszerowidth (gunichar);
 #endif /* ! GLIB_CHECK_VERSION (2, 13, 0) */
 
+#if ! GLIB_CHECK_VERSION (2, 16, 0)
+int g_strcmp0 (const char *str1, const char *str2);
+#endif /* ! GLIB_CHECK_VERSION (2, 16, 0) */
+
 /*** inline functions ****************************************************************************/
 
 #endif /* MC_GLIBCOMPAT_H */

src/vfs/sftpfs/connection.c

@@ -1,12 +1,12 @@
 /* Virtual File System: SFTP file system.
    The internal functions: connections
 
-   Copyright (C) 2011
+   Copyright (C) 2011, 2013
    The Free Software Foundation, Inc.
 
    Written by:
    Ilia Maslakov <il.smind@gmail.com>, 2011
-   Slava Zanko <slavazanko@gmail.com>, 2011, 2012
+   Slava Zanko <slavazanko@gmail.com>, 2011, 2012, 2013
 
    This file is part of the Midnight Commander.
 
@@ -437,6 +437,7 @@ sftpfs_close_connection (struct vfs_s_super *super, const char *shutdown_message
     if (super_data == NULL)
         return;
 
+    vfs_path_element_free (super_data->original_connection_info);
     if (super_data->agent != NULL)
     {
         libssh2_agent_disconnect (super_data->agent);

src/vfs/sftpfs/internal.h

@@ -43,6 +43,7 @@ typedef struct
 
     int socket_handle;
     const char *fingerprint;
+    vfs_path_element_t *original_connection_info;
 } sftpfs_super_data_t;
 
 /*** global variables defined in .c file *********************************************************/

src/vfs/sftpfs/vfs_subclass.c

@@ -1,12 +1,12 @@
 /* Virtual File System: SFTP file system.
    The VFS subclass functions
 
-   Copyright (C) 2011
+   Copyright (C) 2011, 2013
    The Free Software Foundation, Inc.
 
    Written by:
    Ilia Maslakov <il.smind@gmail.com>, 2011
-   Slava Zanko <slavazanko@gmail.com>, 2011, 2012
+   Slava Zanko <slavazanko@gmail.com>, 2011, 2012, 2013
 
    This file is part of the Midnight Commander.
 
@@ -58,29 +58,17 @@ static gboolean
 sftpfs_cb_is_equal_connection (const vfs_path_element_t * vpath_element, struct vfs_s_super *super,
                                const vfs_path_t * vpath, void *cookie)
 {
-    int port;
-    char *user_name;
     int result;
+    vfs_path_element_t *orig_connect_info;
 
     (void) vpath;
     (void) cookie;
 
-    if (vpath_element->user != NULL)
-        user_name = vpath_element->user;
-    else
-        user_name = vfs_get_local_username ();
+    orig_connect_info = ((sftpfs_super_data_t *) super->data)->original_connection_info;
 
-    if (vpath_element->port != 0)
-        port = vpath_element->port;
-    else
-        port = SFTP_DEFAULT_PORT;
-
-    result = ((strcmp (vpath_element->host, super->path_element->host) == 0)
-              && (strcmp (user_name, super->path_element->user) == 0)
-              && (port == super->path_element->port));
-
-    if (user_name != vpath_element->user)
-        g_free (user_name);
+    result = ((g_strcmp0 (vpath_element->host, orig_connect_info->host) == 0)
+              && (g_strcmp0 (vpath_element->user, orig_connect_info->user) == 0)
+              && (vpath_element->port == orig_connect_info->port));
 
     return result;
 }
@@ -100,6 +88,7 @@ sftpfs_cb_open_connection (struct vfs_s_super *super,
                            const vfs_path_t * vpath, const vfs_path_element_t * vpath_element)
 {
     GError *error = NULL;
+    sftpfs_super_data_t *sftpfs_super_data;
     int ret_value;
 
     (void) vpath;
@@ -111,7 +100,9 @@ sftpfs_cb_open_connection (struct vfs_s_super *super,
         return -1;
     }
 
-    super->data = g_new0 (sftpfs_super_data_t, 1);
+    sftpfs_super_data = g_new0 (sftpfs_super_data_t, 1);
+    sftpfs_super_data->original_connection_info = vfs_path_element_clone (vpath_element);
+    super->data = sftpfs_super_data;
     super->path_element = vfs_path_element_clone (vpath_element);
 
     sftpfs_fill_connection_data_from_config (super, &error);