imap4d: various fixes.

* imap4d/lsub.c (imap4d_lsub): Fix untagged responses.
* imap4d/imap4d.h (make_interdir): New proto.
* imap4d/create.c (mkdir_p): Remove function.
(MKDIR_PERMISSIONS): Move macro definition to imap4d.h
(imap4d_create): Use make_interdir instead of mkdir_p.
* imap4d/rename.c (make_interdir): New function.
(imap4d_rename): Create intermediate directories as required
by RFC 3501.
Issue additional diagnostics if rename fails.
Fix OK response text.
* imap4d/imap4d.c (imap4d_mainloop): Implement idle timeout.
* imap4d/bye.c (imap4d_bye0): Reset the SIGPIPE before sending
the OK response in order to avoid recursion.

Unrelated changes:

* maidag/tests/forward.at: Fix the expected reply (see f5374bc2).

@@ -23,6 +23,14 @@ imap4d_bye (int reason)
   return imap4d_bye0 (reason, NULL);
 }
 
+static jmp_buf pipejmp;
+
+static RETSIGTYPE
+sigpipe (int sig)
+{
+  longjmp (pipejmp, 1);
+}
+
 int
 imap4d_bye0 (int reason, struct imap4d_command *command)
 {
@@ -97,8 +105,15 @@ imap4d_bye0 (int reason, struct imap4d_command *command)
     }
 
   if (status == EX_OK && command)
-     io_completion_response (command, RESP_OK, "Completed");
-
+    {
+      /* Some clients may close the connection immediately after sending
+	 LOGOUT.  Do not treat this as error (RFC 2683). */
+      static int sigtab[] = { SIGPIPE };
+      mu_set_signals (sigpipe, sigtab, MU_ARRAY_SIZE (sigtab));
+      if (setjmp (pipejmp) == 0)
+	io_completion_response (command, RESP_OK, "Completed");
+    }
+  
   util_bye ();
 
   closelog ();

@@ -18,51 +18,6 @@
 #include "imap4d.h"
 #include <unistd.h>
 
-#define MKDIR_PERMISSIONS 0700
-
-/* FIXME: take permissions as argument */
-static int
-mkdir_p (char *name, int delim)
-{
-  char *p, *dir;
-  int rc = 0;
-
-  dir = name;
-  if (dir[0] == delim)
-    dir++;
-  for (; rc == 0 && (p = strchr (dir, delim)); dir = p)
-    {
-      struct stat st;
-      
-      *p++ = 0;
-      if (stat (name, &st) == 0)
-	{
-	  if (!S_ISDIR (st.st_mode))
-	    {
-	      mu_diag_output (MU_DIAG_ERR,
-			      _("component %s is not a directory"), name);
-	      rc = 1;
-	    }
-	}
-      else if (errno != ENOENT)
-	{
-	  mu_diag_output (MU_DIAG_ERR,
-			  _("cannot stat file %s: %s"),
-			  name, mu_strerror (errno));
-	  rc = 1;
-	}
-      else if (mkdir (name, MKDIR_PERMISSIONS))
-	{
-	  mu_diag_output (MU_DIAG_ERR,
-			  _("cannot create directory %s: %s"), name,
-			  mu_strerror (errno));
-	  rc = 1;
-	}
-      p[-1] = delim;
-    }
-  return 0;
-}
-
 /*
 6.3.3.  CREATE Command
 
@@ -120,7 +75,7 @@ imap4d_create (struct imap4d_command *command, imap4d_tokbuf_t tok)
   /* It will fail if the mailbox already exists.  */
   if (access (name, F_OK) != 0)
     {
-      if (mkdir_p (name, delim[0]))
+      if (make_interdir (name, delim[0], MKDIR_PERMISSIONS))
 	{
 	  rc = RESP_NO;
 	  msg = "Cannot create mailbox";

@@ -64,8 +64,8 @@ static struct argp_option options[] = {
   { "daemon", 'd', N_("NUMBER"), OPTION_ARG_OPTIONAL,
     N_("runs in daemon mode with a maximum of NUMBER children"), 0 },
 
-  {"preauth", OPT_PREAUTH, NULL, 0,
-   N_("start in preauth mode") },
+  { "preauth", OPT_PREAUTH, NULL, 0,
+    N_("start in preauth mode") },
   
   {NULL, 0, NULL, 0, NULL, 0}
 };
@@ -436,6 +436,8 @@ imap4d_mainloop (int ifd, int ofd)
   tokp = imap4d_tokbuf_init ();
   while (1)
     {
+      if (idle_timeout && io_wait_input (idle_timeout) != 1)
+	imap4d_bye (ERR_TIMEOUT);
       imap4d_readline (tokp);
       /* check for updates */
       imap4d_sync ();

@@ -319,6 +319,11 @@ extern int imap4d_check_home_dir (const char *dir, uid_t uid, gid_t gid);
 /* Shared between fetch and store */  
 extern void fetch_flags0 (const char *prefix, mu_message_t msg, int isuid);
 
+/* Permissions for creating intermediate directories.
+   FIXME: These should better be configurable. */
+#define MKDIR_PERMISSIONS 0700
+int make_interdir (const char *name, int delim, int perms);
+
 /* Synchronisation on simultaneous access.  */
 extern int imap4d_sync (void);
 extern int imap4d_sync_flags (size_t);

@@ -532,7 +532,7 @@ imap4d_tokbuf_getline (struct imap4d_tokbuf *tok)
 {
   char buffer[512];
   size_t level = tok->level;
-  
+
   do
     {
       size_t len;

@@ -65,7 +65,8 @@ imap4d_lsub (struct imap4d_command *command, imap4d_tokbuf_t tok)
 	  mu_iterator_current_kv (itr, (const void **)&name, (void**)&val);
 
 	  if (util_wcard_match (name, pattern, delim) == 0)
-	    io_untagged_response (RESP_NONE, "LIST () \"%s\" %s", delim, name);
+	    io_untagged_response (RESP_NONE, "LSUB () \"%s\" \"%s\"",
+				  delim, name);
 	}
     }
   else

@@ -17,6 +17,74 @@
 
 #include "imap4d.h"
 
+int
+make_interdir (const char *name, int delim, int perms)
+{
+  int rc;
+  size_t i;
+  struct mu_wordsplit ws;
+  char *namebuf;
+  size_t namelen = 0;
+  char delimbuf[2];
+  
+  namebuf = malloc (strlen (name) + 1);
+  if (!namebuf)
+    imap4d_bye (ERR_NO_MEM);
+  if (name[0] == '/')
+    namebuf[namelen++] = name[0];
+
+  delimbuf[0] = delim;
+  delimbuf[1] = 0;
+  ws.ws_delim = delimbuf;
+  if (mu_wordsplit (name, &ws,
+		    MU_WRDSF_DELIM|MU_WRDSF_SQUEEZE_DELIMS|
+		    MU_WRDSF_NOVAR|MU_WRDSF_NOCMD))
+    {
+      mu_error (_("cannot split line `%s': %s"), name,
+		mu_wordsplit_strerror (&ws));
+      free (namebuf);
+      return 1;
+    }
+
+  rc = 0;
+  for (i = 0; rc == 0 && i < ws.ws_wordc - 1; i++)
+    {
+      struct stat st;
+      
+      strcpy (namebuf + namelen, ws.ws_wordv[i]);
+      namelen += strlen (ws.ws_wordv[i]);
+
+      if (stat (namebuf, &st))
+	{
+	  if (errno == ENOENT)
+	    {
+	      if (mkdir (namebuf, perms))
+		{
+		  mu_error (_("cannot create directory %s: %s"), namebuf,
+			    mu_strerror (errno));
+		  rc = 1;
+		}
+	    }
+	  else
+	    {
+	      mu_error (_("cannot stat file %s: %s"),
+			namebuf, mu_strerror (errno));
+	      rc = 1;
+	    }
+	}
+      else if (!S_ISDIR (st.st_mode))
+	{
+	  mu_error (_("component %s is not a directory"), namebuf);
+	  rc = 1;
+	}
+      namebuf[namelen++] = '/';
+    }
+  
+  mu_wordsplit_free (&ws);
+  free (namebuf);
+  return rc;
+}
+
 /*
 6.3.5.  RENAME Command
 
@@ -71,6 +139,12 @@ imap4d_rename (struct imap4d_command *command, imap4d_tokbuf_t tok)
 	}
     }
 
+  if (make_interdir (newname, delim[0], MKDIR_PERMISSIONS))
+    {
+      free (newname);
+      return io_completion_response (command, RESP_NO, "Cannot rename");
+    }
+  
   /* Renaming INBOX is permitted, and has special behavior.  It moves
      all messages in INBOX to a new mailbox with the given name,
      leaving INBOX empty.  */
@@ -119,7 +193,7 @@ imap4d_rename (struct imap4d_command *command, imap4d_tokbuf_t tok)
 	}
       mu_mailbox_close (newmbox);
       mu_mailbox_destroy (&newmbox);
-      return io_completion_response (command, RESP_OK, "Already exist");
+      return io_completion_response (command, RESP_OK, "Rename successful");
     }
 
   oldname = namespace_getfullpath (oldname, delim, NULL);
@@ -127,14 +201,25 @@ imap4d_rename (struct imap4d_command *command, imap4d_tokbuf_t tok)
   /* It must exist.  */
   /* FIXME: 1. What if odlname or newname is a remote mailbox?
             2. If newname is local and is in another namespace, its
-  	       permissions must be fixed */
-  if (!oldname || rename (oldname, newname) != 0)
+  	       permissions must be fixed.
+            3. All in all, it would perhaps be better to use the same
+	       algorithm as for INBOX, and delete source mailbox afterwards.
+  */
+  if (!oldname)
     {
       rc = RESP_NO;
       msg = "Failed";
     }
-  if (oldname)
-    free (oldname);
+  else
+    {
+      if (rename (oldname, newname) != 0)
+	{
+	  mu_diag_funcall (MU_DIAG_ERROR, "rename", oldname, errno);
+          rc = RESP_NO;
+          msg = "Failed";
+	}
+      free (oldname);
+    }
   free (newname);
   return io_completion_response (command, rc, msg);
 }

@@ -44,7 +44,7 @@ echo "" >> expout.0
 
 echo "ENVELOPE FROM: gulliver@example.net" > expout.1
 echo "ENVELOPE TO: <foo@bar.baz>" >> expout.1
-awk '{printf("% 4d: %s\n", NR-1,$0)}' $abs_top_srcdir/maidag/tests/input.msg >> expout.1
+awk '{printf("% 4d:",NR-1); if (NF!=0) printf(" %s",$0); print ""}' $abs_top_srcdir/maidag/tests/input.msg >> expout.1
 echo "END OF MESSAGE" >> expout.1
 
 MTA_DIAG=mta.diag