#ifndef RSPAMD_UTIL_H
#define RSPAMD_UTIL_H

#include "config.h"
#include "mem_pool.h"
#include "radix.h"
#include "statfile.h"
#include "printf.h"
#include "fstring.h"

struct config_file;
struct rspamd_main;
struct workq;
struct statfile;
struct classifier_config;

/*
 * Create socket and bind or connect it to specified address and port
 */
gint make_tcp_socket (struct in_addr *, u_short, gboolean is_server, gboolean async);
/*
 * Create socket and bind or connect it to specified address and port
 */
gint make_udp_socket (struct in_addr *, u_short, gboolean is_server, gboolean async);
/*
 * Accept from socket
 */
gint accept_from_socket (gint listen_sock, struct sockaddr *addr, socklen_t *len);
/*
 * Create and bind or connect unix socket
 */
gint make_unix_socket (const gchar *, struct sockaddr_un *, gboolean is_server, gboolean async);

/**
 * Make universal stream socket
 * @param credits host, ip or path to unix socket
 * @param port port (used for network sockets)
 * @param async make this socket asynced
 * @param is_server make this socket as server socket
 * @param try_resolve try name resolution for a socket (BLOCKING)
 */
gint make_universal_stream_socket (const gchar *credits, guint16 port,
		gboolean async, gboolean is_server, gboolean try_resolve);

/*
 * Create socketpair
 */
gint make_socketpair (gint pair[2]);

/*
 * Write pid to file
 */
gint write_pid (struct rspamd_main *);

/*
 * Make specified socket non-blocking
 */
gint make_socket_nonblocking (gint);
/*
 * Make specified socket blocking
 */
gint make_socket_blocking (gint);

/*
 * Poll a sync socket for specified events
 */
gint poll_sync_socket (gint fd, gint timeout, short events);

/*
 * Init signals
 */
#ifdef HAVE_SA_SIGINFO
void init_signals (struct sigaction *sa, void (*sig_handler)(gint, siginfo_t *, void *));
#else
void init_signals (struct sigaction *sa, void (*sig_handler)(gint));
#endif

/*
 * Send specified signal to each worker
 */
void pass_signal_worker (GHashTable *, gint );
/*
 * Convert string to lowercase
 */
void convert_to_lowercase (gchar *str, guint size);

#ifndef HAVE_SETPROCTITLE
/*
 * Process title utility functions
 */
gint init_title(gint argc, gchar *argv[], gchar *envp[]);
gint setproctitle(const gchar *fmt, ...);
#endif

#ifndef HAVE_PIDFILE
/*
 * Pidfile functions from FreeBSD libutil code
 */
typedef struct rspamd_pidfh_s {
	gint pf_fd;
#ifdef HAVE_PATH_MAX
	gchar    pf_path[PATH_MAX + 1];
#elif defined(HAVE_MAXPATHLEN)
	gchar    pf_path[MAXPATHLEN + 1];
#else
	gchar    pf_path[1024 + 1];
#endif
 	dev_t pf_dev;
 	ino_t   pf_ino;
} rspamd_pidfh_t;
rspamd_pidfh_t *rspamd_pidfile_open(const gchar *path, mode_t mode, pid_t *pidptr);
gint rspamd_pidfile_write(rspamd_pidfh_t *pfh);
gint rspamd_pidfile_close(rspamd_pidfh_t *pfh);
gint rspamd_pidfile_remove(rspamd_pidfh_t *pfh);
#else
typedef struct pidfh rspamd_pidfh_t;
#define rspamd_pidfile_open pidfile_open
#define rspamd_pidfile_write pidfile_write
#define rspamd_pidfile_close pidfile_close
#define rspamd_pidfile_remove pidfile_remove
#endif

/*
 * Replace %r with rcpt value and %f with from value, new string is allocated in pool
 */
gchar* resolve_stat_filename (memory_pool_t *pool, gchar *pattern, gchar *rcpt, gchar *from);
#ifdef HAVE_CLOCK_GETTIME
/*
 * Calculate check time with specified resolution of timer
 */
const gchar* calculate_check_time (struct timeval *tv, struct timespec *begin, gint resolution);
#else
const gchar* calculate_check_time (struct timeval *begin, gint resolution);
#endif

/*
 * File locking functions
 */
gboolean lock_file (gint fd, gboolean async);
gboolean unlock_file (gint fd, gboolean async);

/*
 * Hash table utility functions for case insensitive hashing
 */
guint rspamd_strcase_hash (gconstpointer key);
gboolean rspamd_strcase_equal (gconstpointer v, gconstpointer v2);

/*
 * Hash table utility functions for hashing fixed strings
 */
guint fstr_strcase_hash (gconstpointer key);
gboolean fstr_strcase_equal (gconstpointer v, gconstpointer v2);

/*
 * Google perf-tools initialization function
 */
void gperf_profiler_init (struct config_file *cfg, const gchar *descr);

/*
 * Workarounds for older versions of glib
 */
#if ((GLIB_MAJOR_VERSION == 2) && (GLIB_MINOR_VERSION < 22))
void g_ptr_array_unref (GPtrArray *array);
#endif
#if ((GLIB_MAJOR_VERSION == 2) && (GLIB_MINOR_VERSION < 14))
void g_queue_clear (GQueue *queue);
#endif


/*
 * Copy src to dest limited to len, in compare with standart strlcpy(3) rspamd strlcpy does not
 * traverse the whole string and it is possible to use it for non NULL terminated strings. This is
 * more like memccpy(dst, src, size, '\0')
 *
 * @param dst destination string
 * @param src source string
 * @param siz length of destination buffer
 * @return bytes copied
 */
gsize rspamd_strlcpy (gchar *dst, const gchar *src, gsize siz);

/*
 * Strip <> from email address
 */
gchar * escape_braces_addr_fstr (memory_pool_t *pool, f_str_t *in);

/*
 * Convert milliseconds to timeval fields
 */
#define msec_to_tv(msec, tv) do { (tv)->tv_sec = (msec) / 1000; (tv)->tv_usec = ((msec) - (tv)->tv_sec * 1000) * 1000; } while(0)
#define tv_to_msec(tv) (tv)->tv_sec * 1000 + (tv)->tv_usec / 1000

/* Compare two emails for building emails tree */
gint compare_email_func (gconstpointer a, gconstpointer b);

/* Compare two urls for building emails tree */
gint compare_url_func (gconstpointer a, gconstpointer b);

/*
 * Find string find in string s ignoring case
 */
gchar* rspamd_strncasestr (const gchar *s, const gchar *find, gint len);

/*
 * Try to convert string of length to long
 */
gboolean rspamd_strtol (const gchar *s, gsize len, glong *value);

/*
 * Try to convert string of length to unsigned long
 */
gboolean rspamd_strtoul (const gchar *s, gsize len, gulong *value);

/**
 * Try to allocate a file on filesystem (using fallocate or posix_fallocate)
 * @param fd descriptor
 * @param offset offset of file
 * @param len length to allocate
 * @return -1 in case of failure
 */
gint rspamd_fallocate (gint fd, off_t offset, off_t len);

/**
 * Return worker's control structure by its type
 * @param type
 * @return worker's control structure or NULL
 */
extern worker_t* get_worker_by_type (GQuark type);

/**
 * Utils for working with threads to be compatible with all glib versions
 */
typedef struct rspamd_mutex_s {
#if ((GLIB_MAJOR_VERSION == 2) && (GLIB_MINOR_VERSION > 30))
	GMutex mtx;
#else
	GStaticMutex mtx;
#endif
} rspamd_mutex_t;

typedef struct rspamd_rwlock_s {
#if ((GLIB_MAJOR_VERSION == 2) && (GLIB_MINOR_VERSION > 30))
	GRWLock rwlock;
#else
	GStaticRWLock rwlock;
#endif
} rspamd_rwlock_t;


/**
 * Create new mutex
 * @return mutex or NULL
 */
rspamd_mutex_t* rspamd_mutex_new (void);

/**
 * Lock mutex
 * @param mtx
 */
void rspamd_mutex_lock (rspamd_mutex_t *mtx);

/**
 * Unlock mutex
 * @param mtx
 */
void rspamd_mutex_unlock (rspamd_mutex_t *mtx);

/**
 * Create new rwloc
 * @return
 */
rspamd_rwlock_t* rspamd_rwlock_new (void);

/**
 * Lock rwlock for writing
 * @param mtx
 */
void rspamd_rwlock_writer_lock (rspamd_rwlock_t *mtx);

/**
 * Lock rwlock for reading
 * @param mtx
 */
void rspamd_rwlock_reader_lock (rspamd_rwlock_t *mtx);

/**
 * Unlock rwlock from writing
 * @param mtx
 */
void rspamd_rwlock_writer_unlock (rspamd_rwlock_t *mtx);

/**
 * Unlock rwlock from reading
 * @param mtx
 */
void rspamd_rwlock_reader_unlock (rspamd_rwlock_t *mtx);

/**
 * Create new named thread
 * @param name name pattern
 * @param func function to start
 * @param data data to pass to function
 * @param err error pointer
 * @return new thread object that can be joined
 */
GThread* rspamd_create_thread (const gchar *name, GThreadFunc func, gpointer data, GError **err);

#endif