240 lines
8.7 KiB
C
240 lines
8.7 KiB
C
/*
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structrw - Platform-independent reading and writing of JAM structs
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Copyright (C) 1999 Johan Billing
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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This library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with this library; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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Changes made by Johan Billing 2003-10-22
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- Added #include <string.h>
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*/
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#include <stdio.h>
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#include <string.h>
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#include "jam.h"
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#include "structrw.h"
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uint16_t jamgetuword(unsigned char *buf,uint32_t offset)
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{
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return (uint16_t) buf[offset]+
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buf[offset+1]*256;
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}
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void jamputuword(unsigned char *buf,uint32_t offset,uint16_t num)
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{
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buf[offset]=num%256;
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buf[offset+1]=num/256;
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}
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void jamputuint32_t(unsigned char *buf,uint32_t offset,uint32_t num)
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{
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buf[offset]=num%256;
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buf[offset+1]=(num / 256) % 256;
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buf[offset+2]=(num / 256 / 256) % 256;
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buf[offset+3]=(num / 256 / 256 / 256) % 256;
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}
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uint32_t jamgetuint32_t(unsigned char *buf,uint32_t offset)
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{
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return (uint32_t) buf[offset]+
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buf[offset+1]*256+
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buf[offset+2]*256*256+
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buf[offset+3]*256*256*256;
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}
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int freadjambaseheader(FILE *fp,s_JamBaseHeader *s_JamBaseHeader)
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{
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unsigned char buf[SIZE_JAMBASEHEADER];
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if(fread(buf,SIZE_JAMBASEHEADER,1,fp) != 1)
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return 0;
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memcpy(s_JamBaseHeader->Signature,&buf[JAMBASEHEADER_SIGNATURE],4);
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s_JamBaseHeader->DateCreated = jamgetuint32_t(buf,JAMBASEHEADER_DATECREATED);
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s_JamBaseHeader->ModCounter = jamgetuint32_t(buf,JAMBASEHEADER_MODCOUNTER);
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s_JamBaseHeader->ActiveMsgs = jamgetuint32_t(buf,JAMBASEHEADER_ACTIVEMSGS);
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s_JamBaseHeader->PasswordCRC = jamgetuint32_t(buf,JAMBASEHEADER_PASSWORDCRC);
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s_JamBaseHeader->BaseMsgNum = jamgetuint32_t(buf,JAMBASEHEADER_BASEMSGNUM);
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memcpy(s_JamBaseHeader->RSRVD,&buf[JAMBASEHEADER_RSRVD],1000);
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return 1;
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}
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int fwritejambaseheader(FILE *fp,s_JamBaseHeader *s_JamBaseHeader)
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{
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unsigned char buf[SIZE_JAMBASEHEADER];
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memcpy(&buf[JAMBASEHEADER_SIGNATURE],s_JamBaseHeader->Signature,4);
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jamputuint32_t(buf,JAMBASEHEADER_DATECREATED, s_JamBaseHeader->DateCreated);
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jamputuint32_t(buf,JAMBASEHEADER_MODCOUNTER, s_JamBaseHeader->ModCounter);
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jamputuint32_t(buf,JAMBASEHEADER_ACTIVEMSGS, s_JamBaseHeader->ActiveMsgs);
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jamputuint32_t(buf,JAMBASEHEADER_PASSWORDCRC, s_JamBaseHeader->PasswordCRC );
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jamputuint32_t(buf,JAMBASEHEADER_BASEMSGNUM, s_JamBaseHeader->BaseMsgNum);
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memcpy(&buf[JAMBASEHEADER_RSRVD],s_JamBaseHeader->RSRVD,1000);
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if(fwrite(buf,SIZE_JAMBASEHEADER,1,fp) != 1)
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return 0;
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return 1;
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}
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int freadjammsgheader(FILE *fp,s_JamMsgHeader *s_JamMsgHeader)
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{
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unsigned char buf[SIZE_JAMMSGHEADER];
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if(fread(buf,SIZE_JAMMSGHEADER,1,fp) != 1)
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return 0;
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memcpy(s_JamMsgHeader->Signature,&buf[JAMMSGHEADER_SIGNATURE],4);
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s_JamMsgHeader->Revision = jamgetuword(buf,JAMMSGHEADER_REVISION);
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s_JamMsgHeader->ReservedWord = jamgetuword(buf,JAMMSGHEADER_RESERVEDWORD);
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s_JamMsgHeader->SubfieldLen = jamgetuint32_t(buf,JAMMSGHEADER_SUBFIELDLEN);
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s_JamMsgHeader->TimesRead = jamgetuint32_t(buf,JAMMSGHEADER_TIMESREAD);
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s_JamMsgHeader->MsgIdCRC = jamgetuint32_t(buf,JAMMSGHEADER_MSGIDCRC);
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s_JamMsgHeader->ReplyCRC = jamgetuint32_t(buf,JAMMSGHEADER_REPLYCRC);
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s_JamMsgHeader->ReplyTo = jamgetuint32_t(buf,JAMMSGHEADER_REPLYTO);
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s_JamMsgHeader->Reply1st = jamgetuint32_t(buf,JAMMSGHEADER_REPLY1ST);
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s_JamMsgHeader->ReplyNext = jamgetuint32_t(buf,JAMMSGHEADER_REPLYNEXT);
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s_JamMsgHeader->DateWritten = jamgetuint32_t(buf,JAMMSGHEADER_DATEWRITTEN);
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s_JamMsgHeader->DateReceived = jamgetuint32_t(buf,JAMMSGHEADER_DATERECEIVED);
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s_JamMsgHeader->DateProcessed = jamgetuint32_t(buf,JAMMSGHEADER_DATEPROCESSED);
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s_JamMsgHeader->MsgNum = jamgetuint32_t(buf,JAMMSGHEADER_MSGNUM);
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s_JamMsgHeader->Attribute = jamgetuint32_t(buf,JAMMSGHEADER_ATTRIBUTE);
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s_JamMsgHeader->Attribute2 = jamgetuint32_t(buf,JAMMSGHEADER_ATTRIBUTE2);
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s_JamMsgHeader->TxtOffset = jamgetuint32_t(buf,JAMMSGHEADER_TXTOFFSET);
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s_JamMsgHeader->TxtLen = jamgetuint32_t(buf,JAMMSGHEADER_TXTLEN);
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s_JamMsgHeader->PasswordCRC = jamgetuint32_t(buf,JAMMSGHEADER_PASSWORDCRC);
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s_JamMsgHeader->Cost = jamgetuint32_t(buf,JAMMSGHEADER_COST);
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return 1;
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}
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int fwritejammsgheader(FILE *fp,s_JamMsgHeader *s_JamMsgHeader)
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{
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unsigned char buf[SIZE_JAMMSGHEADER];
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memcpy(&buf[JAMMSGHEADER_SIGNATURE],s_JamMsgHeader->Signature,4);
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jamputuword(buf,JAMMSGHEADER_REVISION, s_JamMsgHeader->Revision);
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jamputuword(buf,JAMMSGHEADER_RESERVEDWORD, s_JamMsgHeader->ReservedWord);
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jamputuint32_t(buf,JAMMSGHEADER_SUBFIELDLEN, s_JamMsgHeader->SubfieldLen);
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jamputuint32_t(buf,JAMMSGHEADER_TIMESREAD, s_JamMsgHeader->TimesRead);
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jamputuint32_t(buf,JAMMSGHEADER_MSGIDCRC, s_JamMsgHeader->MsgIdCRC);
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jamputuint32_t(buf,JAMMSGHEADER_REPLYCRC, s_JamMsgHeader->ReplyCRC );
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jamputuint32_t(buf,JAMMSGHEADER_REPLYTO, s_JamMsgHeader->ReplyTo);
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jamputuint32_t(buf,JAMMSGHEADER_REPLY1ST, s_JamMsgHeader->Reply1st);
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jamputuint32_t(buf,JAMMSGHEADER_REPLYNEXT, s_JamMsgHeader->ReplyNext);
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jamputuint32_t(buf,JAMMSGHEADER_DATEWRITTEN, s_JamMsgHeader->DateWritten);
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jamputuint32_t(buf,JAMMSGHEADER_DATERECEIVED, s_JamMsgHeader->DateReceived );
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jamputuint32_t(buf,JAMMSGHEADER_DATEPROCESSED, s_JamMsgHeader->DateProcessed);
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jamputuint32_t(buf,JAMMSGHEADER_MSGNUM, s_JamMsgHeader->MsgNum);
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jamputuint32_t(buf,JAMMSGHEADER_ATTRIBUTE, s_JamMsgHeader->Attribute);
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jamputuint32_t(buf,JAMMSGHEADER_ATTRIBUTE2, s_JamMsgHeader->Attribute2);
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jamputuint32_t(buf,JAMMSGHEADER_TXTOFFSET, s_JamMsgHeader->TxtOffset);
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jamputuint32_t(buf,JAMMSGHEADER_TXTLEN, s_JamMsgHeader->TxtLen);
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jamputuint32_t(buf,JAMMSGHEADER_PASSWORDCRC, s_JamMsgHeader->PasswordCRC);
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jamputuint32_t(buf,JAMMSGHEADER_COST, s_JamMsgHeader->Cost);
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if(fwrite(buf,SIZE_JAMMSGHEADER,1,fp) != 1)
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return 0;
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return 1;
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}
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int freadjamindex(FILE *fp,s_JamIndex *s_JamIndex)
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{
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unsigned char buf[SIZE_JAMINDEX];
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if(fread(buf,SIZE_JAMINDEX,1,fp) != 1)
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return 0;
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s_JamIndex->UserCRC = jamgetuint32_t(buf,JAMINDEX_USERCRC);
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s_JamIndex->HdrOffset = jamgetuint32_t(buf,JAMINDEX_HDROFFSET);
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return 1;
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}
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int fwritejamindex(FILE *fp,s_JamIndex *s_JamIndex)
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{
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unsigned char buf[SIZE_JAMINDEX];
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jamputuint32_t(buf,JAMINDEX_USERCRC, s_JamIndex->UserCRC);
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jamputuint32_t(buf,JAMINDEX_HDROFFSET, s_JamIndex->HdrOffset);
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if(fwrite(buf,SIZE_JAMINDEX,1,fp) != 1)
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return 0;
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return 1;
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}
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int freadjamlastread(FILE *fp,s_JamLastRead *s_JamLastRead)
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{
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unsigned char buf[SIZE_JAMLASTREAD];
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if(fread(buf,SIZE_JAMLASTREAD,1,fp) != 1)
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return 0;
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s_JamLastRead->UserCRC = jamgetuint32_t(buf,JAMLASTREAD_USERCRC);
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s_JamLastRead->UserID = jamgetuint32_t(buf,JAMLASTREAD_USERID);
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s_JamLastRead->LastReadMsg = jamgetuint32_t(buf,JAMLASTREAD_LASTREADMSG);
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s_JamLastRead->HighReadMsg = jamgetuint32_t(buf,JAMLASTREAD_HIGHREADMSG);
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return 1;
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}
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int fwritejamlastread(FILE *fp,s_JamLastRead *s_JamLastRead)
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{
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unsigned char buf[SIZE_JAMLASTREAD];
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jamputuint32_t(buf,JAMLASTREAD_USERCRC,s_JamLastRead->UserCRC);
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jamputuint32_t(buf,JAMLASTREAD_USERID,s_JamLastRead->UserID);
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jamputuint32_t(buf,JAMLASTREAD_LASTREADMSG,s_JamLastRead->LastReadMsg);
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jamputuint32_t(buf,JAMLASTREAD_HIGHREADMSG,s_JamLastRead->HighReadMsg);
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if(fwrite(buf,SIZE_JAMLASTREAD,1,fp) != 1)
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return 0;
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return 1;
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}
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int fwritejamsavesubfield(FILE *fp,s_JamSaveSubfield *s_JamSaveSubfield)
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{
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unsigned char buf[SIZE_JAMLASTREAD];
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jamputuword(buf,JAMSAVESUBFIELD_LOID, s_JamSaveSubfield->LoID);
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jamputuword(buf,JAMSAVESUBFIELD_HIID, s_JamSaveSubfield->HiID);
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jamputuint32_t(buf,JAMSAVESUBFIELD_DATLEN, s_JamSaveSubfield->DatLen);
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if(fwrite(buf,SIZE_JAMSAVESUBFIELD,1,fp) != 1)
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return 0;
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return 1;
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}
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void getjamsubfield(unsigned char *buf,s_JamSubfield *Subfield_S)
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{
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Subfield_S->LoID = jamgetuword(buf,JAMSAVESUBFIELD_LOID);
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Subfield_S->HiID = jamgetuword(buf,JAMSAVESUBFIELD_HIID);
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Subfield_S->DatLen = jamgetuint32_t(buf,JAMSAVESUBFIELD_DATLEN);
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Subfield_S->Buffer = (char *) buf + SIZE_JAMSAVESUBFIELD;
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}
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