466 lines
12 KiB
C
466 lines
12 KiB
C
/*
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* This file Copyright (C) 2009 Charles Kerr <charles@transmissionbt.com>
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*
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* This file is licensed by the GPL version 2. Works owned by the
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* Transmission project are granted a special exemption to clause 2(b)
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* so that the bulk of its code can remain under the MIT license.
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* This exemption does not extend to derived works not owned by
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* the Transmission project.
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*
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* $Id$
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*/
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#ifndef TR_UTILS_H
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#define TR_UTILS_H 1
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#include <inttypes.h>
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#include <stdarg.h>
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#include <stddef.h> /* size_t */
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#include <stdio.h> /* FILE* */
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#include <string.h> /* memcpy()* */
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#include <stdlib.h> /* malloc() */
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#include <time.h> /* time_t* */
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#include "transmission.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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/***
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****
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***/
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#ifndef FALSE
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#define FALSE 0
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#endif
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#ifndef TRUE
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#define TRUE 1
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#endif
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#ifndef UNUSED
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#ifdef __GNUC__
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#define UNUSED __attribute__ ( ( unused ) )
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#else
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#define UNUSED
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#endif
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#endif
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#ifndef TR_GNUC_PRINTF
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#ifdef __GNUC__
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#define TR_GNUC_PRINTF( fmt,\
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args ) __attribute__ ( ( format ( printf, fmt,\
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args ) ) )
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#else
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#define TR_GNUC_PRINTF( fmt, args )
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#endif
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#endif
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#ifndef TR_GNUC_NULL_TERMINATED
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#if __GNUC__ >= 4
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#define TR_GNUC_NULL_TERMINATED __attribute__ ( ( __sentinel__ ) )
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#else
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#define TR_GNUC_NULL_TERMINATED
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#endif
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#endif
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#if __GNUC__ > 2 || ( __GNUC__ == 2 && __GNUC_MINOR__ >= 96 )
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#define TR_GNUC_PURE __attribute__ ( ( __pure__ ) )
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#define TR_GNUC_MALLOC __attribute__ ( ( __malloc__ ) )
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#else
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#define TR_GNUC_PURE
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#define TR_GNUC_MALLOC
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#endif
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/***
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****
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***/
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#if !defined( _ )
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#if defined( SYS_DARWIN )
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#define _( a ) ( a )
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#elif defined( HAVE_LIBINTL_H )
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#include <libintl.h>
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#define _( a ) gettext ( a )
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#else
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#define _( a ) ( a )
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#endif
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#endif
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/* #define DISABLE_GETTEXT */
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#if defined(TR_EMBEDDED) && !defined(DISABLE_GETTEXT)
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#define DISABLE_GETTEXT
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#endif
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#ifdef DISABLE_GETTEXT
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const char * tr_strip_positional_args( const char * fmt );
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#undef _
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#define _( a ) tr_strip_positional_args( a )
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#endif
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/****
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*****
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****/
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void tr_assertImpl( const char * file, int line, const char * test, const char * fmt, ... ) TR_GNUC_PRINTF( 4, 5 );
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#ifdef NDEBUG
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#define tr_assert( test, fmt, ... )
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#else
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#define tr_assert( test, fmt, ... ) \
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do { if( ! ( test ) ) tr_assertImpl( __FILE__, __LINE__, #test, fmt, __VA_ARGS__ ); } while( 0 )
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#endif
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int tr_msgLoggingIsActive( int level );
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void tr_msg( const char * file,
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int line,
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int level,
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const char * torrent,
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const char * fmt,
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... ) TR_GNUC_PRINTF( 5, 6 );
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#define tr_nerr( n, ... ) \
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do { \
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if( tr_msgLoggingIsActive( TR_MSG_ERR ) ) \
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tr_msg( __FILE__, __LINE__, TR_MSG_ERR, n, __VA_ARGS__ ); \
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} while( 0 )
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#define tr_ninf( n, ... ) \
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do { \
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if( tr_msgLoggingIsActive( TR_MSG_INF) ) \
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tr_msg( __FILE__, __LINE__, TR_MSG_INF, n, __VA_ARGS__ ); \
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} while( 0 )
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#define tr_ndbg( n, ... ) \
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do { \
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if( tr_msgLoggingIsActive( TR_MSG_DBG) ) \
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tr_msg( __FILE__, __LINE__, TR_MSG_DBG, n, __VA_ARGS__ ); \
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} while( 0 )
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#define tr_torerr( tor, ... ) \
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do { \
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if( tr_msgLoggingIsActive( TR_MSG_ERR ) ) \
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tr_msg( __FILE__, __LINE__, TR_MSG_ERR, tor->info.name, __VA_ARGS__ ); \
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} while( 0 )
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#define tr_torinf( tor, ... ) \
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do { \
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if( tr_msgLoggingIsActive( TR_MSG_INF ) ) \
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tr_msg( __FILE__, __LINE__, TR_MSG_INF, tor->info.name, __VA_ARGS__ ); \
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} while( 0 )
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#define tr_tordbg( tor, ... ) \
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do { \
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if( tr_msgLoggingIsActive( TR_MSG_DBG ) ) \
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tr_msg( __FILE__, __LINE__, TR_MSG_DBG, tor->info.name, __VA_ARGS__ ); \
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} while( 0 )
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#define tr_err( ... ) \
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do { \
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if( tr_msgLoggingIsActive( TR_MSG_ERR ) ) \
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tr_msg( __FILE__, __LINE__, TR_MSG_ERR, NULL, __VA_ARGS__ ); \
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} while( 0 )
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#define tr_inf( ... ) \
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do { \
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if( tr_msgLoggingIsActive( TR_MSG_INF ) ) \
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tr_msg( __FILE__, __LINE__, TR_MSG_INF, NULL, __VA_ARGS__ ); \
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} while( 0 )
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#define tr_dbg( ... ) \
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do { \
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if( tr_msgLoggingIsActive( TR_MSG_DBG ) ) \
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tr_msg( __FILE__, __LINE__, TR_MSG_DBG, NULL, __VA_ARGS__ ); \
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} while( 0 )
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FILE* tr_getLog( void );
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tr_bool tr_deepLoggingIsActive( void );
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void tr_deepLog( const char * file,
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int line,
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const char * name,
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const char * fmt,
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... ) TR_GNUC_PRINTF( 4, 5 );
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char* tr_getLogTimeStr( char * buf,
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int buflen );
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int tr_wildmat( const char * text,
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const char * pattern );
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/** a portability wrapper for basename(). */
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char* tr_basename( const char * path ) TR_GNUC_MALLOC;
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/** a portability wrapper for dirname(). */
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char* tr_dirname( const char * path ) TR_GNUC_MALLOC;
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/**
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* a portability wrapper around mkdir().
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* On WIN32, the `permissions' argument is unused.
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*
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* @return zero on success, or -1 if an error occurred
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* (in which case errno is set appropriately).
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*/
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int tr_mkdir( const char * path,
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int permissions );
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/**
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* Like mkdir, but makes parent directories as needed.
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*
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* @return zero on success, or -1 if an error occurred
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* (in which case errno is set appropriately).
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*/
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int tr_mkdirp( const char * path,
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int permissions );
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/**
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* Loads a file and returns its contents.
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* On failure, NULL is returned and errno is set.
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*/
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uint8_t* tr_loadFile( const char * filename,
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size_t * size ) TR_GNUC_MALLOC;
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/* creates a filename from a series of elements using the
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correct separator for filenames. */
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char* tr_buildPath( const char * first_element, ... )
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TR_GNUC_NULL_TERMINATED
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TR_GNUC_MALLOC;
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struct timeval;
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void tr_timevalMsec( uint64_t milliseconds,
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struct timeval * setme );
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/* return the current date in milliseconds */
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uint64_t tr_date( void );
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/* wait the specified number of milliseconds */
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void tr_wait( uint64_t delay_milliseconds );
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char* tr_utf8clean( const char * str,
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int max_len,
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tr_bool * err );
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/***
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****
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***/
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struct evbuffer;
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/** @brief pool of reusable buffers
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@see tr_releaseBuffer() */
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struct evbuffer * tr_getBuffer( void );
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/** @brief return a buffer to the pool
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@see tr_getBuffer() */
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void tr_releaseBuffer( struct evbuffer * buf );
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/***
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****
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***/
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/* Sometimes the system defines MAX/MIN, sometimes not. In the latter
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case, define those here since we will use them */
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#ifndef MAX
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#define MAX( a, b ) ( ( a ) > ( b ) ? ( a ) : ( b ) )
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#endif
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#ifndef MIN
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#define MIN( a, b ) ( ( a ) > ( b ) ? ( b ) : ( a ) )
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#endif
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/***
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****
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***/
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static TR_INLINE void* tr_malloc( size_t size )
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{
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return size ? malloc( size ) : NULL;
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}
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static TR_INLINE void* tr_malloc0( size_t size )
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{
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return size ? calloc( 1, size ) : NULL;
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}
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static TR_INLINE void tr_free( void * p )
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{
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if( p != NULL )
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free( p );
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}
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static TR_INLINE void* tr_memdup( const void * src, int byteCount )
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{
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return memcpy( tr_malloc( byteCount ), src, byteCount );
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}
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#define tr_new( struct_type, n_structs ) \
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( (struct_type *) tr_malloc ( ( (size_t) sizeof ( struct_type ) ) * ( ( size_t) ( n_structs ) ) ) )
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#define tr_new0( struct_type, n_structs ) \
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( (struct_type *) tr_malloc0 ( ( (size_t) sizeof ( struct_type ) ) * ( ( size_t) ( n_structs ) ) ) )
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#define tr_renew( struct_type, mem, n_structs ) \
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( (struct_type *) realloc ( ( mem ), ( (size_t) sizeof ( struct_type ) ) * ( ( size_t) ( n_structs ) ) ) )
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/** @param in is a void* so that callers can pass in both signed & unsigned without a cast */
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char* tr_strndup( const void * in, int len ) TR_GNUC_MALLOC;
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/** @param in is a void* so that callers can pass in both signed & unsigned without a cast */
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static TR_INLINE char* tr_strdup( const void * in )
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{
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return tr_strndup( in, in ? strlen( (const char *) in ) : 0 );
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}
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/* @brief same argument list as bsearch() */
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int tr_lowerBound( const void * key,
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const void * base,
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size_t nmemb,
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size_t size,
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int (* compar)(const void* key, const void* arrayMember),
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tr_bool * exact_match );
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char* tr_strdup_printf( const char * fmt,
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... ) TR_GNUC_PRINTF( 1, 2 ) TR_GNUC_MALLOC;
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char* tr_base64_encode( const void * input,
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int inlen,
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int * outlen ) TR_GNUC_MALLOC;
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char* tr_base64_decode( const void * input,
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int inlen,
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int * outlen ) TR_GNUC_MALLOC;
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size_t tr_strlcpy( char * dst,
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const void * src,
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size_t siz );
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int tr_snprintf( char * buf,
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size_t buflen,
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const char * fmt,
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... ) TR_GNUC_PRINTF( 3, 4 );
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const char* tr_strerror( int );
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char* tr_strstrip( char * str );
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/***
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****
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***/
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typedef void ( tr_set_func )( void * element, void * userData );
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void tr_set_compare( const void * a,
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size_t aCount,
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const void * b,
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size_t bCount,
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int compare( const void * a, const void * b ),
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size_t elementSize,
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tr_set_func in_a_cb,
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tr_set_func in_b_cb,
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tr_set_func in_both_cb,
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void * userData );
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void tr_sha1_to_hex( char * out,
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const uint8_t * sha1 );
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int tr_httpIsValidURL( const char * url );
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int tr_httpParseURL( const char * url,
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int url_len,
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char ** setme_host,
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int * setme_port,
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char ** setme_path );
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/***
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****
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***/
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typedef struct tr_bitfield
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{
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uint8_t * bits;
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size_t bitCount;
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size_t byteCount;
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}
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tr_bitfield;
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tr_bitfield* tr_bitfieldConstruct( tr_bitfield*, size_t bitcount );
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tr_bitfield* tr_bitfieldDestruct( tr_bitfield* );
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static TR_INLINE tr_bitfield* tr_bitfieldNew( size_t bitcount )
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{
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return tr_bitfieldConstruct( tr_new0( tr_bitfield, 1 ), bitcount );
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}
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static TR_INLINE void tr_bitfieldFree( tr_bitfield * b )
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{
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tr_free( tr_bitfieldDestruct( b ) );
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}
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tr_bitfield* tr_bitfieldDup( const tr_bitfield* ) TR_GNUC_MALLOC;
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void tr_bitfieldClear( tr_bitfield* );
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int tr_bitfieldAdd( tr_bitfield*, size_t bit );
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int tr_bitfieldRem( tr_bitfield*, size_t bit );
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int tr_bitfieldAddRange( tr_bitfield *, size_t begin, size_t end );
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int tr_bitfieldRemRange( tr_bitfield*, size_t begin, size_t end );
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void tr_bitfieldDifference( tr_bitfield *, const tr_bitfield * );
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int tr_bitfieldIsEmpty( const tr_bitfield* );
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size_t tr_bitfieldCountTrueBits( const tr_bitfield* );
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tr_bitfield* tr_bitfieldOr( tr_bitfield*, const tr_bitfield* );
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/** A stripped-down version of bitfieldHas to be used
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for speed when you're looping quickly. This version
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has none of tr_bitfieldHas()'s safety checks, so you
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need to call tr_bitfieldTestFast() first before you
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start looping. */
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static TR_INLINE tr_bool tr_bitfieldHasFast( const tr_bitfield * b, const size_t nth )
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{
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return ( b->bits[nth>>3u] << ( nth & 7u ) & 0x80 ) != 0;
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}
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/** @param high the highest nth bit you're going to access */
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static TR_INLINE tr_bool tr_bitfieldTestFast( const tr_bitfield * b, const size_t high )
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{
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return ( b != NULL )
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&& ( b->bits != NULL )
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&& ( high < b->bitCount );
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}
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static TR_INLINE tr_bool tr_bitfieldHas( const tr_bitfield * b, size_t nth )
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{
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return tr_bitfieldTestFast( b, nth ) && tr_bitfieldHasFast( b, nth );
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}
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double tr_getRatio( double numerator, double denominator );
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int tr_ptr2int( void* );
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void* tr_int2ptr( int );
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#ifdef __cplusplus
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}
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#endif
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#endif
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