Return meaningful error codes.

@@ -451,26 +451,37 @@ mu_radius_authenticate (struct mu_auth_data **return_data ARG_UNUSED,
 			const void *key,
 			void *func_data ARG_UNUSED, void *call_data)
 {
-  int rc;
+  int rc, code;
   grad_request_t *reply;
   const struct mu_auth_data *auth_data = key;
 
   if (!radius_auth_enabled)
-    {
-      errno = ENOSYS;
-      return 1;
-    }
+    return ENOSYS;
   
   if (!auth_request)
     {
       mu_error (_("--radius-auth-request is not specified"));
-      return 1;
+      return EINVAL;
     }
   
   reply = send_request (auth_request, RT_ACCESS_REQUEST,
 			auth_data->name, (char*) call_data);
-  rc = !reply || reply->code != RT_ACCESS_ACCEPT;
+  if (!reply)
+    return EAGAIN;
+
+  switch (reply->code) {
+  case RT_ACCESS_ACCEPT:
+    rc = 0;
+    break;
+
+  case RT_ACCESS_CHALLENGE:
+    /* Should return another code here? */
+  default:
+    rc = MU_ERR_AUTH_FAILURE;
+  }
+      
   grad_request_free (reply);
+
   return rc;
 }
 
@@ -479,31 +490,35 @@ mu_auth_radius_user_by_name (struct mu_auth_data **return_data,
 			     const void *key,
 			     void *unused_func_data, void *unused_call_data)
 {
-  int rc = 1;
+  int rc = MU_ERR_AUTH_FAILURE;
   grad_request_t *reply;
   
   if (!radius_auth_enabled)
-    {
-      errno = ENOSYS;
-      return 1;
-    }
+    return ENOSYS;
 
   if (!getpwnam_request)
     {
       mu_error (_("--radius-getpwnam-request is not specified"));
-      return 1;
+      return MU_ERR_FAILURE;
     }
   
   reply = send_request (getpwnam_request, RT_ACCESS_REQUEST, key, NULL);
   if (!reply)
+    {
       mu_error (_("radius server did not respond"));
-  else if (reply->code != RT_ACCESS_ACCEPT)
+      rc = EAGAIN;
+    }
+  else
+    {
+      if (reply->code != RT_ACCESS_ACCEPT)
 	mu_error (_("%s: server returned %s"),
 		  (char*) key,
 		  grad_request_code_to_name (reply->code));
       else
 	rc = decode_reply (reply, key, "x", return_data);
+      
       grad_request_free (reply);
+    }
   return rc;
 }
 
@@ -512,39 +527,37 @@ mu_auth_radius_user_by_uid (struct mu_auth_data **return_data,
 			    const void *key,
 			    void *func_data, void *call_data)
 {
-  int rc = 1;
+  int rc = MU_ERR_AUTH_FAILURE;
   grad_request_t *reply;
   char uidstr[64];
   
   if (!radius_auth_enabled)
-    {
-      errno = ENOSYS;
-      return 1;
-    }
+    return ENOSYS;
 
   if (!key)
-    {
-      errno = EINVAL;
-      return 1;
-    }
+    return EINVAL;
 
   if (!getpwuid_request)
     {
       mu_error (_("--radius-getpwuid-request is not specified"));
-      return 1;
+      return MU_ERR_FAILURE;
     }
   
   snprintf (uidstr, sizeof (uidstr), "%u", *(uid_t*)key);
   reply = send_request (getpwuid_request, RT_ACCESS_REQUEST, uidstr, NULL);
+  if (!reply)
+    {
+      mu_error (_("radius server did not respond"));
+      rc = EAGAIN;
+    }
   if (reply->code != RT_ACCESS_ACCEPT)
     {
       mu_error (_("uid %s: server returned %s"), uidstr,
 		grad_request_code_to_name (reply->code));
     }
   else
-    {
     rc = decode_reply (reply, uidstr, "x", return_data);
-    }
+
   grad_request_free (reply);
   return rc;
 }
@@ -560,8 +573,7 @@ mu_radius_authenticate (struct mu_auth_data **return_data ARG_UNUSED,
 			const void *key,
 			void *func_data ARG_UNUSED, void *call_data)
 {
-  errno = ENOSYS;
-  return 1;
+  return ENOSYS;
 }
 
 static int
@@ -570,8 +582,7 @@ mu_auth_radius_user_by_name (struct mu_auth_data **return_data ARG_UNUSED,
 			     void *func_data ARG_UNUSED,
 			     void *call_data ARG_UNUSED)
 {
-  errno = ENOSYS;
-  return 1;
+  return ENOSYS;
 }
 
 static int
@@ -579,8 +590,7 @@ mu_auth_radius_user_by_uid (struct mu_auth_data **return_data,
 			    const void *key,
 			    void *func_data, void *call_data)
 {
-  errno = ENOSYS;
-  return 1;
+  return ENOSYS;
 }
 #endif
 

@@ -271,6 +271,56 @@ struct argp mu_sql_argp = {
 };
 
 static int
+decode_tuple (mu_sql_connection_t conn, int n, struct mu_auth_data **return_data)
+{
+  int rc;
+  char *mailbox_name = NULL;
+  char *name;
+      
+  if (mu_sql_get_column (conn, 0, 0, &name))
+    return MU_ERR_FAILURE;
+
+  if (n == 7)
+    {
+      char *tmp;
+      if (mu_sql_get_column (conn, 0, 6, &tmp))
+	return MU_ERR_FAILURE;
+      if ((mailbox_name = strdup (tmp)) == NULL)
+	return ENOMEM;
+    }
+  else if (mu_construct_user_mailbox_url (&mailbox_name, name))
+    return MU_ERR_FAILURE;
+      
+  if (mailbox_name)
+    {
+      char *passwd, *suid, *sgid, *dir, *shell;
+	  
+      if (mu_sql_get_column (conn, 0, 1, &passwd)
+	  || mu_sql_get_column (conn, 0, 2, &suid)
+	  || mu_sql_get_column (conn, 0, 3, &sgid)
+	  || mu_sql_get_column (conn, 0, 4, &dir)
+	  || mu_sql_get_column (conn, 0, 5, &shell))
+	return MU_ERR_FAILURE;
+      
+      rc = mu_auth_data_alloc (return_data,
+			       name,
+			       passwd,
+			       atoi (suid),
+			       atoi (sgid),
+			       "SQL User",
+			       dir,
+			       shell,
+			       mailbox_name,
+			       1);
+    }
+  else
+    rc = MU_ERR_AUTH_FAILURE;
+  
+  free (mailbox_name);
+  return rc;
+}
+
+static int
 mu_auth_sql_by_name (struct mu_auth_data **return_data,
 		     const void *key,
 		     void *func_data ARG_UNUSED,
@@ -282,15 +332,12 @@ mu_auth_sql_by_name (struct mu_auth_data **return_data,
   size_t n;
   
   if (!key)
-    {
-      errno = EINVAL;
-      return 1;
-    }
+    return EINVAL;
 
   query_str = mu_sql_expand_query (mu_sql_getpwnam_query, key);
 
   if (!query_str)
-    return 1;
+    return MU_ERR_FAILURE;
 
   status = mu_sql_connection_init (&conn,
 				   sql_interface,
@@ -304,7 +351,7 @@ mu_auth_sql_by_name (struct mu_auth_data **return_data,
       mu_error ("%s: %s", mu_strerror (status), mu_sql_strerror (conn));
       mu_sql_connection_destroy (&conn);
       free (query_str);
-      return status;
+      return MU_ERR_FAILURE;
     }
 
   status = mu_sql_connect (conn);
@@ -314,7 +361,7 @@ mu_auth_sql_by_name (struct mu_auth_data **return_data,
       mu_error ("%s: %s", mu_strerror (status), mu_sql_strerror (conn));
       mu_sql_connection_destroy (&conn);
       free (query_str);
-      return status;
+      return EAGAIN;
     }
   
   status = mu_sql_query (conn, query_str);
@@ -326,7 +373,7 @@ mu_auth_sql_by_name (struct mu_auth_data **return_data,
 		(status == MU_ERR_SQL) ?  mu_sql_strerror (conn) :
 	 	                          mu_strerror (status));
       mu_sql_connection_destroy (&conn);
-      return 1;
+      return MU_ERR_FAILURE;
     }
 
   status = mu_sql_store_result (conn);
@@ -337,59 +384,14 @@ mu_auth_sql_by_name (struct mu_auth_data **return_data,
 		(status == MU_ERR_SQL) ?  mu_sql_strerror (conn) :
 	 	                          mu_strerror (status));
       mu_sql_connection_destroy (&conn);
-      return 1;
+      return MU_ERR_FAILURE;
     }
 
   mu_sql_num_tuples (conn, &n);
   if (n == 0)
-    {
-      rc = 1;
-    }
-  else
-    {
-      char *mailbox_name = NULL;
-      char *name;
-      
-      mu_sql_get_column (conn, 0, 0, &name);
-
-      if (n == 7)
-	{
-	  char *tmp;
-	  mu_sql_get_column (conn, 0, 6, &tmp);
-	  mailbox_name = strdup (tmp);
-	}
-      else
-	{
-	  mu_construct_user_mailbox_url (&mailbox_name, name);
-	  /* FIXME: Error code is lost */
-	}
-      
-      if (mailbox_name)
-	{
-	  char *passwd, *suid, *sgid, *dir, *shell;
-	  
-	  mu_sql_get_column (conn, 0, 1, &passwd);
-	  mu_sql_get_column (conn, 0, 2, &suid);
-	  mu_sql_get_column (conn, 0, 3, &sgid);
-	  mu_sql_get_column (conn, 0, 4, &dir);
-	  mu_sql_get_column (conn, 0, 5, &shell);
-	  
-	  rc = mu_auth_data_alloc (return_data,
-				   name,
-				   passwd,
-				   atoi (suid),
-				   atoi (sgid),
-				   "SQL User",
-				   dir,
-				   shell,
-				   mailbox_name,
-				   1);
-	}
+    rc = MU_ERR_AUTH_FAILURE;
   else
-	rc = 1;
-      
-      free (mailbox_name);
-    }
+    rc = decode_tuple (conn, n, return_data);
   
   mu_sql_release_result (conn);
   mu_sql_disconnect (conn);
@@ -411,16 +413,13 @@ mu_auth_sql_by_uid (struct mu_auth_data **return_data,
   size_t n;
   
   if (!key)
-    {
-      errno = EINVAL;
-      return 1;
-    }
+    return EINVAL;
 
   snprintf (uidstr, sizeof (uidstr), "%u", *(uid_t*)key);
   query_str = mu_sql_expand_query (mu_sql_getpwuid_query, uidstr);
 
   if (!query_str)
-    return 1;
+    return ENOMEM;
 
   status = mu_sql_connection_init (&conn,
 				   sql_interface,
@@ -434,7 +433,7 @@ mu_auth_sql_by_uid (struct mu_auth_data **return_data,
       mu_error ("%s: %s", mu_strerror (status), mu_sql_strerror (conn));
       mu_sql_connection_destroy (&conn);
       free (query_str);
-      return status;
+      return MU_ERR_FAILURE;
     }
 
   status = mu_sql_connect (conn);
@@ -444,7 +443,7 @@ mu_auth_sql_by_uid (struct mu_auth_data **return_data,
       mu_error ("%s: %s", mu_strerror (status), mu_sql_strerror (conn));
       mu_sql_connection_destroy (&conn);
       free (query_str);
-      return status;
+      return EAGAIN;
     }
   
   status = mu_sql_query (conn, query_str);
@@ -456,7 +455,7 @@ mu_auth_sql_by_uid (struct mu_auth_data **return_data,
 		(status == MU_ERR_SQL) ?  mu_sql_strerror (conn) :
 	 	                          mu_strerror (status));
       mu_sql_connection_destroy (&conn);
-      return 1;
+      return MU_ERR_FAILURE;
     }
 
   status = mu_sql_store_result (conn);
@@ -467,59 +466,15 @@ mu_auth_sql_by_uid (struct mu_auth_data **return_data,
 		(status == MU_ERR_SQL) ?  mu_sql_strerror (conn) :
 	 	                          mu_strerror (status));
       mu_sql_connection_destroy (&conn);
-      return 1;
+      return MU_ERR_FAILURE;
     }
 
   mu_sql_num_tuples (conn, &n);
 
   if (n == 0)
-    {
-      rc = 1;
-    }
-  else
-    {
-      char *name;
-      char *mailbox_name = NULL;
-      
-      mu_sql_get_column (conn, 0, 0, &name);
-  
-      if (n == 7)
-	{
-	  char *tmp;
-	  mu_sql_get_column (conn, 0, 6, &tmp);
-	  mailbox_name = strdup (tmp);
-	}
+    rc = MU_ERR_AUTH_FAILURE;
   else
-	{
-          mu_construct_user_mailbox_url (&mailbox_name, name);      
-          /* FIXME: Error code is lost */
-	}
-      
-      if (mailbox_name)
-	{
-	  char *passwd, *suid, *sgid, *dir, *shell;
-	  
-	  mu_sql_get_column (conn, 0, 1, &passwd);
-	  mu_sql_get_column (conn, 0, 2, &suid);
-	  mu_sql_get_column (conn, 0, 3, &sgid);
-	  mu_sql_get_column (conn, 0, 4, &dir);
-	  mu_sql_get_column (conn, 0, 5, &shell);
-	  
-	  rc = mu_auth_data_alloc (return_data,
-				   name,
-				   passwd,
-				   atoi (suid),
-				   atoi (sgid),
-				   "SQL User",
-				   dir,
-				   shell,
-				   mailbox_name,
-				   1);
-	}
-      else
-	rc = 1;
-      free (mailbox_name);
-    }
+    rc = decode_tuple (conn, n, return_data);
   
   mu_sql_release_result (conn);
   mu_sql_disconnect (conn);
@@ -553,7 +508,7 @@ mu_sql_getpass (const char *username, char **passwd)
       mu_error ("%s: %s", mu_strerror (status), mu_sql_strerror (conn));
       mu_sql_connection_destroy (&conn);
       free (query_str);
-      return status;
+      return MU_ERR_FAILURE;
     }
 
   status = mu_sql_connect (conn);
@@ -563,7 +518,7 @@ mu_sql_getpass (const char *username, char **passwd)
       mu_error ("%s: %s", mu_strerror (status), mu_sql_strerror (conn));
       mu_sql_connection_destroy (&conn);
       free (query_str);
-      return status;
+      return EAGAIN;
     }
   
   status = mu_sql_query (conn, query_str);
@@ -575,7 +530,7 @@ mu_sql_getpass (const char *username, char **passwd)
 		(status == MU_ERR_SQL) ?  mu_sql_strerror (conn) :
 	 	                          mu_strerror (status));
       mu_sql_connection_destroy (&conn);
-      return status;
+      return MU_ERR_FAILURE;
     }
 
   status = mu_sql_store_result (conn);
@@ -586,7 +541,7 @@ mu_sql_getpass (const char *username, char **passwd)
 		(status == MU_ERR_SQL) ?  mu_sql_strerror (conn) :
 	 	                          mu_strerror (status));
       mu_sql_connection_destroy (&conn);
-      return status;
+      return MU_ERR_FAILURE;
     }
 
   status = mu_sql_get_column (conn, 0, 0, &sql_pass);
@@ -597,7 +552,7 @@ mu_sql_getpass (const char *username, char **passwd)
 	 	                          mu_strerror (status));
       mu_sql_release_result (conn);
       mu_sql_connection_destroy (&conn);
-      return status;
+      return MU_ERR_FAILURE;
     }
 
   *passwd = strdup (sql_pass);
@@ -622,10 +577,10 @@ mu_sql_authenticate (struct mu_auth_data **return_data ARG_UNUSED,
   int rc;
   
   if (!auth_data)
-    return 1;
+    return EINVAL;
 
-  if (mu_sql_getpass (auth_data->name, &sql_pass))
-    return 1;
+  if ((rc = mu_sql_getpass (auth_data->name, &sql_pass)))
+    return rc;
 
   switch (mu_sql_password_type)
     {
@@ -640,6 +595,8 @@ mu_sql_authenticate (struct mu_auth_data **return_data ARG_UNUSED,
 	 just as the rest of mu_sql_.* functions do */
 #ifdef HAVE_MYSQL
       rc = mu_check_mysql_scrambled_password (sql_pass, pass);
+#else
+      rc = 1;
 #endif
       break;
 
@@ -650,7 +607,7 @@ mu_sql_authenticate (struct mu_auth_data **return_data ARG_UNUSED,
 
   free (sql_pass);
   
-  return rc;
+  return rc == 0 ? 0 : MU_ERR_AUTH_FAILURE;
 }
 
 #else

 /* GNU Mailutils -- a suite of utilities for electronic mail
-   Copyright (C) 2002 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006 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
@@ -52,6 +52,7 @@
 #include <mailutils/argp.h>
 #include <mailutils/mu_auth.h>
 #include <mailutils/nls.h>
+#include <mailutils/errno.h>
 
 #ifdef ENABLE_VIRTUAL_DOMAINS
 
@@ -143,20 +144,19 @@ mu_auth_virt_domain_by_name (struct mu_auth_data **return_data,
   char *mailbox_name;
   
   if (!key)
-    {
-      errno = EINVAL;
-      return 1;
-    }
+    return EINVAL;
 
   pw = getpwnam_virtual (key);
   if (!pw)
     {
       pw = getpwnam_ip_virtual (key);
       if (!pw)
-	return 1;
+	return MU_ERR_AUTH_FAILURE;
     }
   
   mailbox_name = calloc (strlen (pw->pw_dir) + strlen ("/INBOX") + 1, 1);
+  if (!mailbox_name)
+    return ENOMEM;
   sprintf (mailbox_name, "%s/INBOX", pw->pw_dir);
 
   rc = mu_auth_data_alloc (return_data,
@@ -208,8 +208,7 @@ mu_auth_virt_domain_by_name (struct mu_auth_data **return_data ARG_UNUSED,
 			     void *func_data ARG_UNUSED,
 			     void *call_data ARG_UNUSED)
 {
-  errno = ENOSYS;
-  return 1;
+  return ENOSYS;
 }
 #endif
 

@@ -42,6 +42,7 @@
 #include <mailutils/mailbox.h>
 #include <mailutils/argp.h>
 #include <mailutils/mu_auth.h>
+#include <mailutils/errno.h>
 
 /* System database */
 static int
@@ -51,11 +52,11 @@ mu_auth_system (struct mu_auth_data **return_data, const struct passwd *pw)
   int rc;
   
   if (!pw)
-    return 1;
+    return MU_ERR_AUTH_FAILURE;
 
   rc = mu_construct_user_mailbox_url (&mailbox_name, pw->pw_name);
   if (rc)
-    return 1; /* FIXME: Return code is lost */
+    return rc; /* FIXME: Return code is lost */
   
   rc = mu_auth_data_alloc (return_data,
 			   pw->pw_name,
@@ -78,10 +79,7 @@ mu_auth_system_by_name (struct mu_auth_data **return_data,
 			void *call_data ARG_UNUSED)
 {
   if (!key)
-    {
-      errno = EINVAL;
-      return 1;
-    }
+    return EINVAL;
   return mu_auth_system (return_data, getpwnam (key));
 }
 
@@ -92,10 +90,7 @@ mu_auth_system_by_uid (struct mu_auth_data **return_data,
 		       void *call_data ARG_UNUSED)
 {
   if (!key)
-    {
-      errno = EINVAL;
-      return 1;
-    }
+    return EINVAL;
   return mu_auth_system (return_data, getpwuid (*(uid_t*) key));
 }
 
@@ -108,9 +103,12 @@ mu_authenticate_generic (struct mu_auth_data **return_data ARG_UNUSED,
   const struct mu_auth_data *auth_data = key;
   char *pass = call_data;
 
-  return !auth_data
-    || !auth_data->passwd
-    || strcmp (auth_data->passwd, crypt (pass, auth_data->passwd));
+  if (!auth_data || !pass)
+    return EINVAL;
+  
+  return auth_data->passwd
+         && strcmp (auth_data->passwd, crypt (pass, auth_data->passwd)) == 0 ?
+          0 : MU_ERR_AUTH_FAILURE;
 }
 
 /* Called only if generic fails */
@@ -129,10 +127,11 @@ mu_authenticate_system (struct mu_auth_data **return_data ARG_UNUSED,
       struct spwd *spw;
       spw = getspnam (auth_data->name);
       if (spw)
-	return strcmp (spw->sp_pwdp, crypt (pass, spw->sp_pwdp));
+	return strcmp (spw->sp_pwdp, crypt (pass, spw->sp_pwdp)) == 0 ?
+	        0 : MU_ERR_AUTH_FAILURE;
     }
 #endif
-  return 1;
+  return MU_ERR_AUTH_FAILURE;
 }