Fix TLS support, improve GOCS subsystem.

* include/mailutils/gocs.h (gocs_init_fp): Rename to mu_gocs_init_fp. Change
signature.
(mu_gocs_mailbox_init, mu_gocs_locking_init, mu_gocs_source_email_init)
(mu_gocs_mailer_init, mu_gocs_logging_init)
(mu_gocs_debug_init): Fix prototypes.
* include/mailutils/gsasl.h (mu_gsasl_module_init): Update prototype.
* include/mailutils/libsieve.h (mu_sieve_module_init): Update prototype.
* include/mailutils/mu_auth.h (struct mu_auth_module.init): Update type
to mu_gocs_init_fp.
* include/mailutils/radius.h (mu_radius_module_init): Update prototype.

* include/mailutils/tls.h (struct mu_tls_module_config.client_enable):
Replace with .enable. It affects entire TLS subsystem, not only client
part.
(mu_tls_module_init): Update prototype.
* include/mailutils/types.hin (mu_gocs_op): New enum.

* mailbox/gocs.c (mu_gocs_dummy, mu_gocs_mailbox_init)
(mu_gocs_locking_init, mu_gocs_source_email_init)
(mu_gocs_mailer_init, mu_gocs_logging_init)
(mu_gocs_debug_init): Take two arguments.
(mu_gocs_flush): After running set stage, call all init callbacks with
mu_gocs_op_flush.

* auth/tls.c (mu_tls_module_config): Initialize .enable to 1.
(mu_tls_module_init): Rewrite using new prototype.
Use mu_gocs_op_flush to initialize the library.
(mu_init_tls_libs): Initialize the library only if mu_tls_module_config.enable
is set.
* auth/gsasl.c (mu_gsasl_module_init): Update.
* auth/ldap.c (mu_ldap_module_init): Update.
* auth/pam.c (mu_pam_module_init): Update.
* auth/radius.c (mu_radius_module_init): Update.
* auth/sql.c (mu_sql_module_init): Update.
* auth/virtual.c (mu_virtual_module_init): Update.
* libcfg/tls.c (mu_tls_param): Update.
* libsieve/conf.c (mu_sieve_module_init): Update.
* doc/texinfo/programs.texi: Update.

@@ -36,17 +36,14 @@
 #include <gsasl.h>
 #include <lbuf.h>
 
-struct mu_gsasl_module_data mu_gsasl_module_data;
+struct mu_gsasl_module_data mu_gsasl_module_data = {
+    SITE_CRAM_MD5_PWD
+};
 
 int
-mu_gsasl_module_init (void *data)
+mu_gsasl_module_init (enum mu_gocs_op op, void *data)
 {
-  static struct mu_gsasl_module_data _default_module_data = {
-    SITE_CRAM_MD5_PWD
-  };
-  
-  if (!data)
-    mu_gsasl_module_data = _default_module_data;
+  if (op == mu_gocs_op_set && data)
     memcpy (&mu_gsasl_module_data, data, sizeof (mu_gsasl_module_data));
   return 0;
 }

@@ -59,9 +59,13 @@ const char *default_field_map =
 static struct mu_ldap_module_config ldap_param;
 
 int
-mu_ldap_module_init (void *data)
+mu_ldap_module_init (enum mu_gocs_op op, void *data)
 {
   struct mu_ldap_module_config *cfg = data;
+
+  if (op != mu_gocs_op_set)
+    return 0;
+  
   if (cfg)
     ldap_param = *cfg;
 

 /* GNU Mailutils -- a suite of utilities for electronic mail
-   Copyright (C) 2002, 2007 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2007, 2008 Free Software Foundation, Inc.
 
    This library is free software; you can redistribute it and/or
    modify it under the terms of the GNU Lesser General Public
@@ -146,9 +146,9 @@ mu_authenticate_pam (struct mu_auth_data **return_data MU_ARG_UNUSED,
 #endif
 
 int
-mu_pam_module_init (void *data)
+mu_pam_module_init (enum mu_gocs_op op, void *data)
 {
-  if (data)
+  if (op == mu_gocs_op_set && data)
     {
       struct mu_gocs_pam *p = data;
       mu_pam_service = p->service ? strdup (p->service) : p->service;

@@ -210,10 +210,12 @@ mu_grad_logger(int level,
 }
 
 int
-mu_radius_module_init (void *data)
+mu_radius_module_init (enum mu_gocs_op op, void *data)
 {
   struct mu_radius_module_data *cfg = data;
 
+  if (op != mu_gocs_op_set)
+    return 0;
   if (!NEED_RADIUS_P (cfg))
     return 0;
   

@@ -607,10 +607,12 @@ mu_sql_authenticate (struct mu_auth_data **return_data MU_ARG_UNUSED,
 }
 
 int
-mu_sql_module_init (void *data)
+mu_sql_module_init (enum mu_gocs_op op, void *data)
 {
   struct mu_sql_module_config *cfg = data;
 
+  if (op != mu_gocs_op_set)
+    return 0;
   mu_sql_module_config.interface = mu_sql_interface_index (cfg->interface);
   if (mu_sql_module_config.interface == 0)
     {

 /* GNU Mailutils -- a suite of utilities for electronic mail
-   Copyright (C) 2003, 2004, 2007 Free Software Foundation, Inc.
+   Copyright (C) 2003, 2004, 2007, 2008 Free Software Foundation, Inc.
 
    This library is free software; you can redistribute it and/or
    modify it under the terms of the GNU Lesser General Public
@@ -36,16 +36,20 @@
 
 #include <lbuf.h>
 
-struct mu_tls_module_config mu_tls_module_config;
+struct mu_tls_module_config mu_tls_module_config = { 1, NULL, NULL, NULL };
   
 int
-mu_tls_module_init (void *data)
+mu_tls_module_init (enum mu_gocs_op op, void *data)
 {
-  if (data)
+  switch (op)
     {
+    case mu_gocs_op_set:
+      if (data)
 	memcpy (&mu_tls_module_config, data, sizeof mu_tls_module_config);
+      break;
+
+    case mu_gocs_op_flush:
 #ifdef WITH_TLS
-      if (mu_tls_module_config.client_enable)
       mu_init_tls_libs ();
 #endif    
     }
@@ -113,7 +117,7 @@ int mu_tls_enable = 0;
 int
 mu_init_tls_libs (void)
 {
-  if (!mu_tls_enable)
+  if (mu_tls_module_config.enable && !mu_tls_enable)
     mu_tls_enable = !gnutls_global_init (); /* Returns 1 on success */
   return mu_tls_enable;
 }

 /* GNU Mailutils -- a suite of utilities for electronic mail
-   Copyright (C) 2002, 2006, 2007 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006, 2007, 2008 Free Software Foundation, Inc.
 
    This library is free software; you can redistribute it and/or
    modify it under the terms of the GNU Lesser General Public
@@ -58,9 +58,9 @@
 struct mu_gocs_virtual mu_virtual_module_config = { SITE_VIRTUAL_PWDDIR };
 
 int
-mu_virtual_module_init (void *data)
+mu_virtual_module_init (enum mu_gocs_op op, void *data)
 {
-  if (data)
+  if (op == mu_gocs_op_set && data)
     {
       struct mu_gocs_virtual *p = data;
       mu_virtual_module_config = *p;

@@ -2042,8 +2042,8 @@ ldap @{
 @subheading Syntax
 @smallexample
 tls @{
-  # @r{Enable client TLS encryption.}
-  tls @var{bool};
+  # @r{Enable TLS support.}
+  enable @var{bool};
   # @r{Specify SSL certificate file.}
   ssl-cert @var{bool};
   # @r{Specify SSL certificate key file.}

@@ -82,20 +82,20 @@ extern int mu_load_user_rcfile;
 extern int mu_load_site_rcfile;
 extern char *mu_load_rcfile;
 
-typedef int (*gocs_init_fp) (void *data);
+typedef int (*mu_gocs_init_fp) (enum mu_gocs_op op, void *data);
 
-void mu_gocs_register (const char *capa, gocs_init_fp init);
+void mu_gocs_register (const char *capa, mu_gocs_init_fp init);
 void mu_gocs_register_std (const char *name);
 void mu_gocs_store (char *capa, void *data);
 void mu_gocs_flush (void);
 int mu_gocs_enumerate (mu_list_action_t action, void *data);
 
-int mu_gocs_mailbox_init (void *data);
-int mu_gocs_locking_init (void *data);
-int mu_gocs_source_email_init (void *data);
-int mu_gocs_mailer_init (void *data);
-int mu_gocs_logging_init (void *data);
-int mu_gocs_debug_init (void *data);
+int mu_gocs_mailbox_init (enum mu_gocs_op, void *data);
+int mu_gocs_locking_init (enum mu_gocs_op, void *data);
+int mu_gocs_source_email_init (enum mu_gocs_op, void *data);
+int mu_gocs_mailer_init (enum mu_gocs_op, void *data);
+int mu_gocs_logging_init (enum mu_gocs_op, void *data);
+int mu_gocs_debug_init (enum mu_gocs_op, void *data);
 
 #ifdef __cplusplus
 }

@@ -28,7 +28,7 @@ struct mu_gsasl_module_data
   char *cram_md5_pwd;
 };
 
-int mu_gsasl_module_init (void *data);
+int mu_gsasl_module_init (enum mu_gocs_op, void *);
 
 struct mu_gsasl_module_data mu_gsasl_module_data;
 

@@ -275,7 +275,7 @@ struct mu_gocs_sieve
   mu_list_t library_path;
 };
 
-int mu_sieve_module_init (void *);
+int mu_sieve_module_init (enum mu_gocs_op, void *);
 
 #ifdef __cplusplus
 }

@@ -67,7 +67,7 @@ typedef int (*mu_auth_fp) (struct mu_auth_data **data,
 struct mu_auth_module
 {
   char            *name;
-  gocs_init_fp   init;
+  mu_gocs_init_fp init;
   mu_auth_fp      authenticate;
   void            *authenticate_data;
   mu_auth_fp      auth_by_name;

 /* GNU Mailutils -- a suite of utilities for electronic mail
    Copyright (C) 1999, 2000, 2001, 2004, 2005,
-   2007 Free Software Foundation, Inc.
+   2007, 2008 Free Software Foundation, Inc.
 
    This library is free software; you can redistribute it and/or
    modify it under the terms of the GNU Lesser General Public
@@ -29,6 +29,6 @@ struct mu_radius_module_data
   char *getpwuid_request;
 };
 
-extern int mu_radius_module_init (void *data);
+extern int mu_radius_module_init (enum mu_gocs_op, void *data);
 
 #endif

 /* GNU Mailutils -- a suite of utilities for electronic mail
-   Copyright (C) 2003, 2005, 2007  Free Software Foundation, Inc.
+   Copyright (C) 2003, 2005, 2007, 2008 Free Software Foundation, Inc.
 
    This library is free software; you can redistribute it and/or
    modify it under the terms of the GNU Lesser General Public
@@ -27,13 +27,13 @@ extern "C" {
 
 struct mu_tls_module_config
 {
-  int client_enable;
+  int enable;
   char *ssl_cert;
   char *ssl_key;
   char *ssl_cafile;
 };
 
-extern int mu_tls_module_init (void *data);
+extern int mu_tls_module_init (enum mu_gocs_op, void *);
 
 extern int mu_tls_stream_create (mu_stream_t *stream, 
 				 mu_stream_t strin, mu_stream_t strout,

@@ -124,6 +124,12 @@ typedef struct _mu_progmailer *mu_progmailer_t;
 
 #define MU_DEFAULT_RECORD _MU_DEFAULT_RECORD_
 
+enum mu_gocs_op
+  {
+    mu_gocs_op_set,
+    mu_gocs_op_flush
+  };
+
 #ifdef __cplusplus
 }
 #endif

 /* This file is part of GNU Mailutils
-   Copyright (C) 2007 Free Software Foundation, Inc.
+   Copyright (C) 2007, 2008 Free Software Foundation, Inc.
 
    GNU Mailutils is free software; you can redistribute it and/or
    modify it under the terms of the GNU General Public License as
@@ -25,7 +25,7 @@
 static struct mu_tls_module_config tls_settings;
 
 static struct mu_cfg_param mu_tls_param[] = {
-  { "tls", mu_cfg_bool, &tls_settings.client_enable, 0, NULL,
+  { "enable", mu_cfg_bool, &tls_settings.enable, 0, NULL,
     N_("Enable client TLS encryption.") },
   { "ssl-cert", mu_cfg_string, &tls_settings.ssl_cert, 0, NULL,
     N_("Specify SSL certificate file."),

@@ -50,10 +50,10 @@ _path_append (void *item, void *data)
 }
 
 int
-mu_sieve_module_init (void *data)
+mu_sieve_module_init (enum mu_gocs_op op, void *data)
 {
   struct mu_gocs_sieve *p;
-  if (!data)
+  if (!(op == mu_gocs_op_set && data))
     return 0;
   p = data;
 

@@ -41,19 +41,19 @@ char *mu_load_rcfile = NULL;
 
 
 int
-mu_gocs_dummy (void *data)
+mu_gocs_dummy (enum mu_gocs_op op, void *data)
 {
   return 0;
 }
 
 int
-mu_gocs_mailbox_init (void *data)
+mu_gocs_mailbox_init (enum mu_gocs_op op, void *data)
 {
   int rc;
   struct mu_gocs_mailbox *p = data;
 
-  if (!p)
-    return 0;
+  if (op == mu_gocs_op_set && p)
+    {
       if (p->mail_spool)
 	{
 	  rc = mu_set_mail_directory (p->mail_spool);
@@ -79,15 +79,16 @@ mu_gocs_mailbox_init (void *data)
 	  free (p->mailbox_type);
 	  p->mailbox_type = NULL;
 	}
+    }
   return 0;
 }
 
 int
-mu_gocs_locking_init (void *data)
+mu_gocs_locking_init (enum mu_gocs_op op, void *data)
 {
   struct mu_gocs_locking *p = data;
   
-  if (!p)
+  if (!(op == mu_gocs_op_set && p))
     return 0;
 
   if (p->lock_flags)
@@ -156,12 +157,12 @@ mu_gocs_locking_init (void *data)
 }
 
 int
-mu_gocs_source_email_init (void *data)
+mu_gocs_source_email_init (enum mu_gocs_op op, void *data)
 {
   struct mu_gocs_source_email *p = data;
   int rc;
 
-  if (!p)
+  if (!(op == mu_gocs_op_set && p))
     return 0;
   
   if (p->address)
@@ -186,12 +187,12 @@ mu_gocs_source_email_init (void *data)
 }
 
 int
-mu_gocs_mailer_init (void *data)
+mu_gocs_mailer_init (enum mu_gocs_op op, void *data)
 {
   struct mu_gocs_mailer *p = data;
   int rc;
 
-  if (!p)
+  if (!(op == mu_gocs_op_set && p))
     return 0;
   
   if (p->mailer)
@@ -206,10 +207,12 @@ mu_gocs_mailer_init (void *data)
 }
 
 int
-mu_gocs_logging_init (void *data)
+mu_gocs_logging_init (enum mu_gocs_op op, void *data)
 {
   struct mu_gocs_logging *p = data;
 
+  if (op == mu_gocs_op_set)
+    {
       if (!p)
 	{
 	  static struct mu_gocs_logging default_gocs_logging = { LOG_FACILITY };
@@ -226,17 +229,16 @@ mu_gocs_logging_init (void *data)
 
       if (p->tag)
 	mu_log_tag = strdup (p->tag);
-  /* FIXME: Tag */
+    }
   return 0;
 }
 
 int
-mu_gocs_debug_init (void *data)
+mu_gocs_debug_init (enum mu_gocs_op op, void *data)
 {
-  struct mu_gocs_debug *p;
-  if (data)
+  if (op == mu_gocs_op_set && data)
     {
-      p = data;
+      struct mu_gocs_debug *p = data;
       if (p->string && p->errpfx)
 	{
 	  mu_global_debug_from_string (p->string, p->errpfx);
@@ -252,7 +254,7 @@ mu_gocs_debug_init (void *data)
 struct mu_gocs_entry
 {
   const char *name;
-  gocs_init_fp init;
+  mu_gocs_init_fp init;
 };
 
 #define MAX_GOCS 512
@@ -260,7 +262,7 @@ struct mu_gocs_entry
 static struct mu_gocs_entry _gocs_table[MAX_GOCS];
 
 void
-mu_gocs_register (const char *capa, gocs_init_fp init)
+mu_gocs_register (const char *capa, mu_gocs_init_fp init)
 {
   int i;
   for (i = 0; _gocs_table[i].name; i++)
@@ -287,7 +289,7 @@ mu_gocs_enumerate (mu_list_action_t action, void *data)
   return 0;
 }
 
-static gocs_init_fp
+static mu_gocs_init_fp
 find_init_function (struct mu_gocs_entry *tab, const char *capa)
 {
   for (; tab->name; tab++)
@@ -312,7 +314,7 @@ static struct mu_gocs_entry std_gocs_table[] = {
 void
 mu_gocs_register_std (const char *name)
 {
-  gocs_init_fp init = find_init_function (std_gocs_table, name);
+  mu_gocs_init_fp init = find_init_function (std_gocs_table, name);
   if (!init)
     {
       mu_error (_("INTERNAL ERROR at %s:%d: unknown standard capability `%s'"),
@@ -372,7 +374,7 @@ int
 _gocs_flush (void *item, void *data)
 {
   struct mu_gocs_data *s = item;
-  gocs_init_fp initfun = find_init_function (_gocs_table, s->capa);
+  mu_gocs_init_fp initfun = find_init_function (_gocs_table, s->capa);
 
   if (!initfun)
     {
@@ -381,7 +383,7 @@ _gocs_flush (void *item, void *data)
       abort ();
     }
 
-  if (initfun (s->data))
+  if (initfun (mu_gocs_op_set, s->data))
     {
       mu_error (_("Initialization of GOCS `%s' failed"), s->capa);
       return 1;
@@ -393,5 +395,9 @@ _gocs_flush (void *item, void *data)
 void
 mu_gocs_flush ()
 {
+  int i;
   mu_list_do (data_list, _gocs_flush, NULL);
+
+  for (i = 0; _gocs_table[i].name; i++)
+    _gocs_table[i].init (mu_gocs_op_flush, NULL);
 }