/* Copyright (C) 2000-2003 SKYRIX Software AG This file is part of OGo OGo is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation; either version 2, or (at your option) any later version. OGo is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details. You should have received a copy of the GNU Lesser General Public License along with OGo; see the file COPYING. If not, write to the Free Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ // $Id$ #include "EOGlobalID.h" #include "common.h" #include #include #if !defined(__MINGW32__) # include #endif @implementation EOGlobalID - (BOOL)isTemporary { return NO; } - (id)copyWithZone:(NSZone *)_zone { [self doesNotRecognizeSelector:_cmd]; return nil; } @end /* EOGlobalID */ @implementation EOTemporaryGlobalID static unsigned short sequence = 0; static unsigned int ip; + (void)initialize { static BOOL isInitialized = NO; if (!isInitialized) { char buf[1024]; struct hostent *hostEntry; isInitialized = YES; gethostname(buf, 1024); // THREADING if ((hostEntry = gethostbyname(buf))) { char **ptr; ptr = hostEntry->h_addr_list; if (*ptr) { NSAssert((unsigned)hostEntry->h_length >= sizeof(ip), @"invalid host address !"); memcpy(&ip, *ptr, sizeof(ip)); } else { NSLog(@"WARNING: set IP address for EO key generation to 0.0.0.0 !"); ip = 0; } } else { NSLog(@"WARNING: set IP address for EO key generation to 0.0.0.0 !"); ip = 0; } } } + (void)assignGloballyUniqueBytes:(unsigned char *)_buffer { struct { unsigned short sequence; unsigned short pid; unsigned int time; unsigned int ip; } *bufPtr; bufPtr = (void *)_buffer; bufPtr->sequence = sequence++; #if defined(__WIN32__) bufPtr->pid = (unsigned short)GetCurrentProcessId(); #else bufPtr->pid = getpid(); #endif bufPtr->time = time(NULL); bufPtr->ip = ip; } - (id)init { [self->isa assignGloballyUniqueBytes:&(self->idbuffer[0])]; return self; } - (BOOL)isTemporary { return YES; } - (BOOL)isEqual:(id)_other { return _other == self ? YES : NO; #if 0 EOTemporaryGlobalID *otherKey; if (_other == nil) return NO; if (_other == self) return YES; otherKey = _other; if (otherKey->isa != self->isa) return NO; // compare bytes return NO; #endif } @end /* EOTemporaryGlobalID */