193 lines
4.7 KiB
C
193 lines
4.7 KiB
C
/******************************************************************************
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* $Id$
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*
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* Copyright (c) 2007 Joshua Elsasser
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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* DEALINGS IN THE SOFTWARE.
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*****************************************************************************/
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <assert.h>
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#include <errno.h>
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#include <fcntl.h>
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#include <stdlib.h>
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#include <stdio.h>
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#include <string.h>
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#include <unistd.h>
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#include <libtransmission/transmission.h>
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#include <libtransmission/trcompat.h>
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#include <libtransmission/utils.h> /* tr_loadFile() */
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#include "errors.h"
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#include "misc.h"
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static char gl_myname[256];
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void
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setmyname( const char * argv0 )
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{
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const char * name;
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name = strrchr( argv0, '/' );
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if( NULL == name || '\0' == *(++name) )
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{
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name = argv0;
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}
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strlcpy( gl_myname, name, sizeof gl_myname );
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}
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const char *
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getmyname( void )
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{
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return gl_myname;
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}
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void
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confpath( char * buf,
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size_t len,
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const char * configDir,
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const char * file,
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enum confpathtype type )
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{
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switch( type )
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{
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case CONF_PATH_TYPE_DAEMON:
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tr_buildPath( buf, len, configDir, "daemon", file, NULL );
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break;
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case CONF_PATH_TYPE_GTK:
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tr_buildPath( buf, len, configDir, "gtk", file, NULL );
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break;
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case CONF_PATH_TYPE_OSX:
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tr_buildPath( buf, len, configDir, file, NULL );
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break;
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default:
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assert( 0 );
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break;
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}
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}
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void
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absolutify( char * buf, size_t len, const char * path )
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{
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if( *path == '/' )
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strlcpy( buf, path, len );
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else {
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char cwd[MAX_PATH_LENGTH];
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getcwd( cwd, sizeof( cwd ) );
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tr_buildPath( buf, len, cwd, path, NULL );
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}
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}
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int
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writefile( const char * name, uint8_t * buf, ssize_t len )
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{
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int fd;
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ssize_t res;
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fd = open( name, O_WRONLY | O_CREAT | O_TRUNC, 0666 );
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if( 0 > fd )
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{
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errnomsg( "Couldn't open \"%1$s\": %2$s", name, tr_strerror( errno ) );
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return -1;
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}
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res = write( fd, buf, len );
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if( 0 > res )
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{
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errnomsg( "failed to write to %s", name );
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return -1;
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}
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if( len > res )
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{
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errmsg( "failed to write all data to %s", name );
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return -1;
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}
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close( fd );
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return 0;
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}
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uint8_t *
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readfile( const char * filename, size_t * len )
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{
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return tr_loadFile( filename, len );
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}
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#ifndef HAVE_DAEMON
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int
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daemon( int nochdir, int noclose )
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{
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switch( fork( ) ) {
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case 0:
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break;
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case -1:
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fprintf( stderr, "Error daemonizing (fork)! %d - %s\n", errno, strerror(errno) );
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return -1;
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default:
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_exit(0);
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}
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if( setsid() < 0 ) {
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fprintf( stderr, "Error daemonizing (setsid)! %d - %s\n", errno, strerror(errno) );
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return -1;
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}
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switch( fork( ) ) {
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case 0:
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break;
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case -1:
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fprintf( stderr, "Error daemonizing (fork2)! %d - %s\n", errno, strerror(errno) );
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return -1;
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default:
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_exit(0);
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}
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if( !nochdir && 0 > chdir( "/" ) ) {
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fprintf( stderr, "Error daemonizing (chdir)! %d - %s\n", errno, strerror(errno) );
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return -1;
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}
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if( !noclose ) {
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int fd;
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fd = open("/dev/null", O_RDONLY);
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if( fd != 0 ) {
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dup2( fd, 0 );
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close( fd );
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}
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fd = open("/dev/null", O_WRONLY);
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if( fd != 1 ) {
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dup2( fd, 1 );
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close( fd );
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}
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fd = open("/dev/null", O_WRONLY);
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if( fd != 2 ) {
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dup2( fd, 2 );
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close( fd );
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}
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}
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return 0;
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}
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#endif
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