+ char *target = u->dir;
+
+ DEBUGP (("changing working directory\n"));
+
+ /* Change working directory. To change to a non-absolute
+ Unix directory, we need to prepend initial directory
+ (con->id) to it. Absolute directories "just work".
+
+ A relative directory is one that does not begin with '/'
+ and, on non-Unix OS'es, one that doesn't begin with
+ "<letter>:". */
+
+ if (target[0] != '/'
+ && !(con->rs != ST_UNIX
+ && ISALPHA (target[0]) && target[1] == ':'))
+ {
+ int idlen = strlen (con->id);
+ char *ntarget, *p;
+
+ /* Strip trailing slash(es) from con->id. */
+ while (idlen > 0 && con->id[idlen - 1] == '/')
+ --idlen;
+ p = ntarget = (char *)alloca (idlen + 1 + strlen (u->dir) + 1);
+ memcpy (p, con->id, idlen);
+ p += idlen;
+ *p++ = '/';
+ strcpy (p, target);
+
+ DEBUGP (("Prepended initial PWD to relative path:\n"));
+ DEBUGP ((" pwd: '%s'\n old: '%s'\n new: '%s'\n",
+ con->id, target, ntarget));
+ target = ntarget;
+ }
+
+ /* If the FTP host runs VMS, we will have to convert the absolute
+ directory path in UNIX notation to absolute directory path in
+ VMS notation as VMS FTP servers do not like UNIX notation of
+ absolute paths. "VMS notation" is [dir.subdir.subsubdir]. */
+
+ if (con->rs == ST_VMS)
+ {
+ char *tmpp;
+ char *ntarget = (char *)alloca (strlen (target) + 2);
+ /* We use a converted initial dir, so directories in
+ TARGET will be separated with slashes, something like
+ "/INITIAL/FOLDER/DIR/SUBDIR". Convert that to
+ "[INITIAL.FOLDER.DIR.SUBDIR]". */
+ strcpy (ntarget, target);
+ assert (*ntarget == '/');
+ *ntarget = '[';
+ for (tmpp = ntarget + 1; *tmpp; tmpp++)
+ if (*tmpp == '/')
+ *tmpp = '.';
+ *tmpp++ = ']';
+ *tmpp = '\0';
+ DEBUGP (("Changed file name to VMS syntax:\n"));
+ DEBUGP ((" Unix: '%s'\n VMS: '%s'\n", target, ntarget));
+ target = ntarget;
+ }
+