misc: Cache user home directory in session

Signed-off-by: Jakub Jelen <jjelen@redhat.com>
Reviewed-by: Pavol Žáčik <pzacik@redhat.com>
Reviewed-by: Andreas Schneider <asn@cryptomilk.org>

include/libssh/misc.h

@@ -43,7 +43,7 @@ extern "C" {
 
 /* in misc.c */
 /* gets the user home dir. */
-char *ssh_get_user_home_dir(void);
+char *ssh_get_user_home_dir(ssh_session session);
 char *ssh_get_local_username(void);
 int ssh_file_readaccess_ok(const char *file);
 int ssh_dir_writeable(const char *path);

include/libssh/session.h

@@ -253,6 +253,7 @@ struct ssh_session_struct {
         char *username;
         char *host;
         char *bindaddr; /* bind the client to an ip addr */
+        char *homedir;
         char *sshdir;
         char *knownhosts;
         char *global_knownhosts;