text: /*
   * PgBouncer - Lightweight connection pooler for PostgreSQL.
   *
   * Copyright (c) 2007-2009  Marko Kreen, Skype Technologies OÜ
   *
   * Permission to use, copy, modify, and/or distribute this software for any
   * purpose with or without fee is hereby granted, provided that the above
   * copyright notice and this permission notice appear in all copies.
   *
   * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
   * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
   * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
   * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
   * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
   * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
   * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
   */
  
  #include <usual/logging.h>
  #include <usual/string.h>
  
  /*
   * logging about specific socket
   */
  int log_socket_prefix(enum LogLevel lev, void *ctx, char *dst, unsigned int dstlen);
  
  #define slog_error(sk, args...) log_generic(LG_ERROR, sk, ## args)
  #define slog_warning(sk, args...) log_generic(LG_WARNING, sk, ## args)
  #define slog_info(sk, args...) log_generic(LG_INFO, sk, ## args)
  #define slog_debug(sk, args...) do { \
  		if (unlikely(cf_verbose > 0)) \
  			log_generic(LG_DEBUG, sk, ## args); \
  	} while (0)
  #define slog_noise(sk, args...) do { \
  		if (unlikely(cf_verbose > 1)) \
  			log_generic(LG_NOISE, sk, ## args); \
  	} while (0)
  
  /*
   * password tools
   */
  #define MD5_PASSWD_LEN  35
  void pg_md5_encrypt(const char *part1, const char *part2, size_t p2len, char *dest);
  void get_random_bytes(uint8_t *dest, int len);
  
  const char *bin2hex(const uint8_t *src, unsigned srclen, char *dst, unsigned dstlen);
  
  bool tune_socket(int sock, bool is_unix) _MUSTCHECK;
  
  bool strlist_contains(const char *liststr, const char *str);
  
  void fill_remote_addr(PgSocket *sk, int fd, bool is_unix);
  void fill_local_addr(PgSocket *sk, int fd, bool is_unix);
  
  
  void rescue_timers(void);
  void safe_evtimer_add(struct event *ev, struct timeval *tv);
  
  /* log truncated strings */
  #define safe_strcpy(dst, src, dstlen) do { \
  	size_t needed = strlcpy(dst, src, dstlen); \
  	if (unlikely(needed >= (dstlen))) \
  		log_warning("bug in %s:%d - string truncated", __FILE__, __LINE__); \
  } while (0)
  