text: /* Copyright (c) 2016-2017 Dovecot authors, see the included COPYING file */
  
  #include "auth-common.h"
  #include "str.h"
  #include "strescape.h"
  #include "buffer.h"
  #include "base64.h"
  #include "stats.h"
  #include "stats-connection.h"
  #include "auth-stats.h"
  #include "auth-request.h"
  #include "auth-request-stats.h"
  
  #define USER_STATS_SOCKET_NAME "stats-user"
  
  static struct stats_connection *auth_stats_conn = NULL;
  static struct stats_item *auth_stats_item;
  
  struct auth_stats *auth_request_stats_get(struct auth_request *request)
  {
  	if (request->stats == NULL)
  		request->stats = stats_alloc(request->pool);
  	return stats_fill_ptr(request->stats, auth_stats_item);
  }
  
  void auth_request_stats_add_tempfail(struct auth_request *request)
  {
  	struct auth_stats *stats = auth_request_stats_get(request);
  
  	stats->auth_db_tempfail_count++;
  }
  
  void auth_request_stats_send(struct auth_request *request)
  {
  	string_t *str;
  	buffer_t *buf;
  
  	/* we'll send stats only when the request is finished. this reduces
  	   memory usage and is a bit simpler. auth requests are typically
  	   pretty short lived anyway. */
  	i_assert(!request->stats_sent);
  	request->stats_sent = TRUE;
  
  	if (request->stats == NULL) {
  		/* nothing happened in this request - don't send it */
  		return;
  	}
  	if (!request->set->stats)
  		return;
  
  	buf = buffer_create_dynamic(pool_datastack_create(), 128);
  	stats_export(buf, request->stats);
  
  	str = t_str_new(256);
  	str_append(str, "ADD-USER\t");
  	if (request->user != NULL)
  		str_append_tabescaped(str, request->user);
  	str_append_c(str, '\t');
  	str_append_tabescaped(str, request->service);
  	str_append_c(str, '\t');
  	base64_encode(buf->data, buf->used, str);
  
  	str_append_c(str, '\n');
  	stats_connection_send(auth_stats_conn, str);
  }
  
  void auth_request_stats_init(void)
  {
  	auth_stats_conn = stats_connection_create(USER_STATS_SOCKET_NAME);
  	auth_stats_item = stats_register(&auth_stats_vfuncs);
  }
  
  void auth_request_stats_deinit(void)
  {
  	stats_connection_unref(&auth_stats_conn);
  	stats_unregister(&auth_stats_item);
  }
  