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CC = gcc $(CPPFLAGS) $(CFLAGS) -D__LINUX__ $(LDFLAGS) -Wall
AR = ar -ru
RM = rm -f
OBJS = crc32.o mbase.o message.o lastread.o subpack.o structrw.o
jamlib.a : $(OBJS)
$(AR) jamlib.a $(OBJS)
crc32.o: crc32.c jam.h
$(CC) -c crc32.c -o crc32.o
mbase.o: mbase.c jam.h
$(CC) -c mbase.c -o mbase.o
message.o: message.c jam.h
$(CC) -c message.c -o message.o
lastread.o: lastread.c jam.h
$(CC) -c lastread.c -o lastread.o
subpack.o: subpack.c jam.h
$(CC) -c subpack.c -o subpack.o
structrw.o: structrw.c jam.h
$(CC) -c structrw.c -o structrw.o
clean:
$(RM) *.o *.a

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CC = gcc -Wall -D__OS2__ -DINCL_DOSPROCESS
AR = ar -ru
RM = del
OBJS = crc32.o mbase.o message.o lastread.o subpack.o structrw.o
jamlib.a: $(OBJS)
$(AR) jamlib.a $(OBJS)
crc32.o: crc32.c jam.h
$(CC) -c crc32.c -o crc32.o
mbase.o: mbase.c jam.h
$(CC) -c mbase.c -o mbase.o
message.o: message.c jam.h
$(CC) -c message.c -o message.o
lastread.o: lastread.c jam.h
$(CC) -c lastread.c -o lastread.o
subpack.o: subpack.c jam.h
$(CC) -c subpack.c -o subpack.o
structrw.o: structrw.c jam.h
$(CC) -c structrw.c -o structrw.o
clean:
$(RM) *.o *.a

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jamlib/Makefile.win32 Normal file
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CC = gcc -Wall
AR = ar -ru
RM = del
OBJS = crc32.o mbase.o message.o lastread.o subpack.o structrw.o
jamlib.a : $(OBJS)
$(AR) jamlib.a $(OBJS)
crc32.o: crc32.c jam.h
$(CC) -c crc32.c -o crc32.o
mbase.o: mbase.c jam.h
$(CC) -c mbase.c -o mbase.o
message.o: message.c jam.h
$(CC) -c message.c -o message.o
lastread.o: lastread.c jam.h
$(CC) -c lastread.c -o lastread.o
subpack.o: subpack.c jam.h
$(CC) -c subpack.c -o subpack.o
structrw.o: structrw.c jam.h
$(CC) -c structrw.c -o structrw.o
clean:
$(RM) *.o *.a

78
jamlib/crc32.c Normal file
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/*
Crc32 - CRC32-calculation for JAM
Copyright (C) 2000 Johan Billing
This library 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 2.1 of the License, or (at your option) any later version.
This library 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 this library; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
Changes made by Johan Billing 2003-10-22
- Fixed comparison between signed and unsigned variable in JAM_Crc32()
*/
#include "jam.h"
uint32_t crc32tab[] = { /* CRC polynomial 0xedb88320 */
0x00000000, 0x77073096, 0xee0e612c, 0x990951ba, 0x076dc419, 0x706af48f, 0xe963a535, 0x9e6495a3,
0x0edb8832, 0x79dcb8a4, 0xe0d5e91e, 0x97d2d988, 0x09b64c2b, 0x7eb17cbd, 0xe7b82d07, 0x90bf1d91,
0x1db71064, 0x6ab020f2, 0xf3b97148, 0x84be41de, 0x1adad47d, 0x6ddde4eb, 0xf4d4b551, 0x83d385c7,
0x136c9856, 0x646ba8c0, 0xfd62f97a, 0x8a65c9ec, 0x14015c4f, 0x63066cd9, 0xfa0f3d63, 0x8d080df5,
0x3b6e20c8, 0x4c69105e, 0xd56041e4, 0xa2677172, 0x3c03e4d1, 0x4b04d447, 0xd20d85fd, 0xa50ab56b,
0x35b5a8fa, 0x42b2986c, 0xdbbbc9d6, 0xacbcf940, 0x32d86ce3, 0x45df5c75, 0xdcd60dcf, 0xabd13d59,
0x26d930ac, 0x51de003a, 0xc8d75180, 0xbfd06116, 0x21b4f4b5, 0x56b3c423, 0xcfba9599, 0xb8bda50f,
0x2802b89e, 0x5f058808, 0xc60cd9b2, 0xb10be924, 0x2f6f7c87, 0x58684c11, 0xc1611dab, 0xb6662d3d,
0x76dc4190, 0x01db7106, 0x98d220bc, 0xefd5102a, 0x71b18589, 0x06b6b51f, 0x9fbfe4a5, 0xe8b8d433,
0x7807c9a2, 0x0f00f934, 0x9609a88e, 0xe10e9818, 0x7f6a0dbb, 0x086d3d2d, 0x91646c97, 0xe6635c01,
0x6b6b51f4, 0x1c6c6162, 0x856530d8, 0xf262004e, 0x6c0695ed, 0x1b01a57b, 0x8208f4c1, 0xf50fc457,
0x65b0d9c6, 0x12b7e950, 0x8bbeb8ea, 0xfcb9887c, 0x62dd1ddf, 0x15da2d49, 0x8cd37cf3, 0xfbd44c65,
0x4db26158, 0x3ab551ce, 0xa3bc0074, 0xd4bb30e2, 0x4adfa541, 0x3dd895d7, 0xa4d1c46d, 0xd3d6f4fb,
0x4369e96a, 0x346ed9fc, 0xad678846, 0xda60b8d0, 0x44042d73, 0x33031de5, 0xaa0a4c5f, 0xdd0d7cc9,
0x5005713c, 0x270241aa, 0xbe0b1010, 0xc90c2086, 0x5768b525, 0x206f85b3, 0xb966d409, 0xce61e49f,
0x5edef90e, 0x29d9c998, 0xb0d09822, 0xc7d7a8b4, 0x59b33d17, 0x2eb40d81, 0xb7bd5c3b, 0xc0ba6cad,
0xedb88320, 0x9abfb3b6, 0x03b6e20c, 0x74b1d29a, 0xead54739, 0x9dd277af, 0x04db2615, 0x73dc1683,
0xe3630b12, 0x94643b84, 0x0d6d6a3e, 0x7a6a5aa8, 0xe40ecf0b, 0x9309ff9d, 0x0a00ae27, 0x7d079eb1,
0xf00f9344, 0x8708a3d2, 0x1e01f268, 0x6906c2fe, 0xf762575d, 0x806567cb, 0x196c3671, 0x6e6b06e7,
0xfed41b76, 0x89d32be0, 0x10da7a5a, 0x67dd4acc, 0xf9b9df6f, 0x8ebeeff9, 0x17b7be43, 0x60b08ed5,
0xd6d6a3e8, 0xa1d1937e, 0x38d8c2c4, 0x4fdff252, 0xd1bb67f1, 0xa6bc5767, 0x3fb506dd, 0x48b2364b,
0xd80d2bda, 0xaf0a1b4c, 0x36034af6, 0x41047a60, 0xdf60efc3, 0xa867df55, 0x316e8eef, 0x4669be79,
0xcb61b38c, 0xbc66831a, 0x256fd2a0, 0x5268e236, 0xcc0c7795, 0xbb0b4703, 0x220216b9, 0x5505262f,
0xc5ba3bbe, 0xb2bd0b28, 0x2bb45a92, 0x5cb36a04, 0xc2d7ffa7, 0xb5d0cf31, 0x2cd99e8b, 0x5bdeae1d,
0x9b64c2b0, 0xec63f226, 0x756aa39c, 0x026d930a, 0x9c0906a9, 0xeb0e363f, 0x72076785, 0x05005713,
0x95bf4a82, 0xe2b87a14, 0x7bb12bae, 0x0cb61b38, 0x92d28e9b, 0xe5d5be0d, 0x7cdcefb7, 0x0bdbdf21,
0x86d3d2d4, 0xf1d4e242, 0x68ddb3f8, 0x1fda836e, 0x81be16cd, 0xf6b9265b, 0x6fb077e1, 0x18b74777,
0x88085ae6, 0xff0f6a70, 0x66063bca, 0x11010b5c, 0x8f659eff, 0xf862ae69, 0x616bffd3, 0x166ccf45,
0xa00ae278, 0xd70dd2ee, 0x4e048354, 0x3903b3c2, 0xa7672661, 0xd06016f7, 0x4969474d, 0x3e6e77db,
0xaed16a4a, 0xd9d65adc, 0x40df0b66, 0x37d83bf0, 0xa9bcae53, 0xdebb9ec5, 0x47b2cf7f, 0x30b5ffe9,
0xbdbdf21c, 0xcabac28a, 0x53b39330, 0x24b4a3a6, 0xbad03605, 0xcdd70693, 0x54de5729, 0x23d967bf,
0xb3667a2e, 0xc4614ab8, 0x5d681b02, 0x2a6f2b94, 0xb40bbe37, 0xc30c8ea1, 0x5a05df1b, 0x2d02ef8d
};
/***********************************************************************
**
** JAM_Crc32 - Calculates CRC-32
**
***********************************************************************/
uint32_t JAM_Crc32(char *Buffer_PC, uint32_t Length_I)
{
uint32_t Crc_I;
uint32_t c;
Crc_I=0xffffffff;
for(c=0;c < Length_I; c++)
Crc_I=(Crc_I>>8) ^ crc32tab[(char)Crc_I ^ tolower(Buffer_PC[c])];
return(Crc_I);
}

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/*
JAMLIB - A JAM subroutine library
Copyright (C) 1999 Bj<42>rn Stenberg
This library 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 2.1 of the License, or (at your option) any later version.
This library 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 this library; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
Changes made by Johan Billing 2000-04-16:
- Added #defines for JAM_NO_MESSAGE and JAM_CORRUPT_MSG
- Added #ifndef linux around typedefs for uint16_t and uint32_t
- Added prototype for JAM_AddEmptyMessage()
Backported changes from JAMLIB 1.4.7 made by Johan Billing 2003-10-26
- Added prototype for JAM_DeleteMessage()
*/
/***********************************************************************
**
** JAM Definitions
**
***********************************************************************/
#ifndef __JAM_H__
#define __JAM_H__
#include <stdlib.h>
#include <stdio.h>
#include <ctype.h>
#include <stdint.h>
/*
** Error codes
*/
#define JAM_BAD_PARAM 1 /* one or more parameters are wrong */
#define JAM_IO_ERROR 2 /* i/o error. check JAM_Errno() for details */
#define JAM_LOCK_FAILED 3 /* lock could not be set */
#define JAM_NOT_LOCKED 4 /* the message base was not locked before writing */
#define JAM_NO_MEMORY 5 /* out of memory! */
#define JAM_NO_USER 6 /* user not found */
#define JAM_NO_MESSAGE 7 /* message has been deleted */
#define JAM_CORRUPT_MSG 8 /* message header is corrupt */
/*
** CRC definitions
*/
#define JAM_NO_CRC 0xffffffff
/*
** File extensions
*/
#define EXT_HDRFILE ".jhr"
#define EXT_TXTFILE ".jdt"
#define EXT_IDXFILE ".jdx"
#define EXT_LRDFILE ".jlr"
/*
** Revision level and header signature
*/
#define CURRENTREVLEV 1
#define HEADERSIGNATURE "JAM\0"
/*
** Header file information block, stored first in all .JHR files
*/
typedef struct {
char Signature[4]; /* <J><A><M> followed by <NUL> */
uint32_t DateCreated; /* Creation date */
uint32_t ModCounter; /* Last processed counter */
uint32_t ActiveMsgs; /* Number of active (not deleted) msgs */
uint32_t PasswordCRC; /* CRC-32 of password to access */
uint32_t BaseMsgNum; /* Lowest message number in index file */
char RSRVD[1000]; /* Reserved space */
} s_JamBaseHeader;
/*
** Message status bits
*/
#define MSG_LOCAL 0x00000001L /* Msg created locally */
#define MSG_INTRANSIT 0x00000002L /* Msg is in-transit */
#define MSG_PRIVATE 0x00000004L /* Private */
#define MSG_READ 0x00000008L /* Read by addressee */
#define MSG_SENT 0x00000010L /* Sent to remote */
#define MSG_KILLSENT 0x00000020L /* Kill when sent */
#define MSG_ARCHIVESENT 0x00000040L /* Archive when sent */
#define MSG_HOLD 0x00000080L /* Hold for pick-up */
#define MSG_CRASH 0x00000100L /* Crash */
#define MSG_IMMEDIATE 0x00000200L /* Send Msg now, ignore restrictions */
#define MSG_DIRECT 0x00000400L /* Send directly to destination */
#define MSG_GATE 0x00000800L /* Send via gateway */
#define MSG_FILEREQUEST 0x00001000L /* File request */
#define MSG_FILEATTACH 0x00002000L /* File(s) attached to Msg */
#define MSG_TRUNCFILE 0x00004000L /* Truncate file(s) when sent */
#define MSG_KILLFILE 0x00008000L /* Delete file(s) when sent */
#define MSG_RECEIPTREQ 0x00010000L /* Return receipt requested */
#define MSG_CONFIRMREQ 0x00020000L /* Confirmation receipt requested */
#define MSG_ORPHAN 0x00040000L /* Unknown destination */
#define MSG_ENCRYPT 0x00080000L /* Msg text is encrypted */
#define MSG_COMPRESS 0x00100000L /* Msg text is compressed */
#define MSG_ESCAPED 0x00200000L /* Msg text is seven bit ASCII */
#define MSG_FPU 0x00400000L /* Force pickup */
#define MSG_TYPELOCAL 0x00800000L /* Msg is for local use only (no export) */
#define MSG_TYPEECHO 0x01000000L /* Msg is for conference distribution */
#define MSG_TYPENET 0x02000000L /* Msg is direct network mail */
#define MSG_NODISP 0x20000000L /* Msg may not be displayed to user */
#define MSG_LOCKED 0x40000000L /* Msg is locked, no editing possible */
#define MSG_DELETED 0x80000000L /* Msg is deleted */
/*
** Message header
*/
typedef struct {
char Signature[4]; /* <J><A><M> followed by <NUL> */
uint16_t Revision; /* CURRENTREVLEV */
uint16_t ReservedWord; /* Reserved */
uint32_t SubfieldLen; /* Length of Subfields */
uint32_t TimesRead; /* Number of times message read */
uint32_t MsgIdCRC; /* CRC-32 of MSGID line */
uint32_t ReplyCRC; /* CRC-32 of REPLY line */
uint32_t ReplyTo; /* This msg is a reply to.. */
uint32_t Reply1st; /* First reply to this msg */
uint32_t ReplyNext; /* Next msg in reply chain */
uint32_t DateWritten; /* When msg was written */
uint32_t DateReceived; /* When msg was received/read */
uint32_t DateProcessed; /* When msg was processed by packer */
uint32_t MsgNum; /* Message number (1-based) */
uint32_t Attribute; /* Msg attribute, see "Status bits" */
uint32_t Attribute2; /* Reserved for future use */
uint32_t TxtOffset; /* Offset of text in text file */
uint32_t TxtLen; /* Length of message text */
uint32_t PasswordCRC; /* CRC-32 of password to access msg */
uint32_t Cost; /* Cost of message */
} s_JamMsgHeader;
/*
** Message header Subfield types
*/
#define JAMSFLD_OADDRESS 0
#define JAMSFLD_DADDRESS 1
#define JAMSFLD_SENDERNAME 2
#define JAMSFLD_RECVRNAME 3
#define JAMSFLD_MSGID 4
#define JAMSFLD_REPLYID 5
#define JAMSFLD_SUBJECT 6
#define JAMSFLD_PID 7
#define JAMSFLD_TRACE 8
#define JAMSFLD_ENCLFILE 9
#define JAMSFLD_ENCLFWALIAS 10
#define JAMSFLD_ENCLFREQ 11
#define JAMSFLD_ENCLFILEWC 12
#define JAMSFLD_ENCLINDFILE 13
#define JAMSFLD_EMBINDAT 1000
#define JAMSFLD_FTSKLUDGE 2000
#define JAMSFLD_SEENBY2D 2001
#define JAMSFLD_PATH2D 2002
#define JAMSFLD_FLAGS 2003
#define JAMSFLD_TZUTCINFO 2004
#define JAMSFLD_UNKNOWN 0xffff
/*
** Message header Subfield
*/
typedef struct {
uint16_t LoID; /* Field ID, 0 - 0xffff */
uint16_t HiID; /* Reserved for future use */
uint32_t DatLen; /* Length of buffer that follows */
char* Buffer; /* DatLen bytes of data */
} s_JamSubfield;
typedef struct {
uint16_t LoID; /* Field ID, 0 - 0xffff */
uint16_t HiID; /* Reserved for future use */
uint32_t DatLen; /* Length of buffer that follows */
} s_JamSaveSubfield;
/*
** Message index record
*/
typedef struct {
uint32_t UserCRC; /* CRC-32 of destination username */
uint32_t HdrOffset; /* Offset of header in .JHR file */
} s_JamIndex;
/*
** Lastread structure, one per user
*/
typedef struct {
uint32_t UserCRC; /* CRC-32 of user name (lowercase) */
uint32_t UserID; /* Unique UserID */
uint32_t LastReadMsg; /* Last read message number */
uint32_t HighReadMsg; /* Highest read message number */
} s_JamLastRead;
/*
** JAMLIB message base handle
*/
typedef struct {
FILE* HdrFile_PS; /* File handle for .JHR file */
FILE* TxtFile_PS; /* File handle for .JDT file */
FILE* IdxFile_PS; /* File handle for .JDX file */
FILE* LrdFile_PS; /* File handle for .JLR file */
int Errno_I; /* last i/o error */
int Locked_I; /* is area locked? */
uint32_t LastUserPos_I; /* last position of lastread record */
uint32_t LastUserId_I; /* userid for the last read lastread record */
} s_JamBase;
/*
** JAMLIB subfield packet
*/
typedef struct {
s_JamSubfield** Fields;
uint32_t NumFields;
uint32_t NumAlloc;
} s_JamSubPacket;
/*
** JAMLIB function declarations
*/
/* mbase.c */
int JAM_OpenMB ( char* Basename_PC,
s_JamBase** NewArea_PPS );
int JAM_CloseMB ( s_JamBase* Area_PS );
int JAM_CreateMB ( char* Basename_PC,
uint32_t BaseMsg_I,
s_JamBase** NewArea_PPS );
int JAM_RemoveMB ( s_JamBase* Area_PS,
char* Basename_PC );
int JAM_LockMB ( s_JamBase* Area_PS,
int Timeout_I );
int JAM_UnlockMB ( s_JamBase* Area_PS );
int JAM_ReadMBHeader ( s_JamBase* Area_PS,
s_JamBaseHeader* Header_PS );
int JAM_WriteMBHeader ( s_JamBase* Area_PS,
s_JamBaseHeader* Header_PS );
int JAM_FindUser ( s_JamBase* Area_PS,
uint32_t UserCrc_I,
uint32_t StartMsg_I,
uint32_t* MsgNo_PI );
int JAM_GetMBSize ( s_JamBase* Area_PS,
uint32_t* Messages_PI );
/* message.c */
int JAM_ReadMsgHeader ( s_JamBase* Area_PS,
uint32_t MsgNo_I,
s_JamMsgHeader* Header_PS,
s_JamSubPacket** SubfieldPack_PPS );
int JAM_ReadMsgText ( s_JamBase* Area_PS,
uint32_t Offset_I,
uint32_t Length_I,
char* Buffer_PC );
int JAM_AddMessage ( s_JamBase* Area_PS,
s_JamMsgHeader* Header_PS,
s_JamSubPacket* SubPack_PS,
char* Text_PC,
uint32_t TextLen_I );
int JAM_AddEmptyMessage ( s_JamBase* Area_PS );
int JAM_DeleteMessage ( s_JamBase* Base_PS,
uint32_t MsgNo_I );
int JAM_ChangeMsgHeader ( s_JamBase* Area_PS,
uint32_t MsgNo_I,
s_JamMsgHeader* Header_PS );
int JAM_ClearMsgHeader ( s_JamMsgHeader* Header_PS );
int JAM_Errno ( s_JamBase* Area_PS );
/* lastread.c */
int JAM_ReadLastRead ( s_JamBase* Area_PS,
uint32_t User_I,
s_JamLastRead* Record_PS );
int JAM_WriteLastRead ( s_JamBase* Area_PS,
uint32_t User_I,
s_JamLastRead* Record_PS );
/* subpacket.c */
s_JamSubPacket* JAM_NewSubPacket ( void );
int JAM_DelSubPacket ( s_JamSubPacket* SubPack_PS );
s_JamSubfield* JAM_GetSubfield ( s_JamSubPacket* SubPack_PS );
s_JamSubfield* JAM_GetSubfield_R ( s_JamSubPacket* SubPack_PS ,
uint32_t* Count_PI);
int JAM_PutSubfield ( s_JamSubPacket* SubPack_PS,
s_JamSubfield* Field_PS );
/* crc32.c */
uint32_t JAM_Crc32 ( char* Buffer_PC, uint32_t Length_I );
#endif

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174
jamlib/lastread.c Normal file
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/*
JAMLIB - A JAM subroutine library
Copyright (C) 1999 Bj<42>rn Stenberg
This library 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 2.1 of the License, or (at your option) any later version.
This library 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 this library; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
Changes made by Johan Billing 2000-04-16:
- Changed source to use feof() instead of errno == EPASTEOF
- Changed source to use structrw to read and write structures
*/
/***********************************************************************
**
** LASTREAD.C -- Lastread pointer handling
**
** Author: Bj<42>rn Stenberg (bjorn.stenberg@sth.frontec.se)
**
***********************************************************************/
#include <stdio.h>
#include <errno.h>
#include "jam.h"
#include "structrw.h"
/***********************************************************************
**
** File global variables
**
***********************************************************************/
/***********************************************************************
**
** JAM_ReadLastRead - Read LastRead record
**
***********************************************************************/
int JAM_ReadLastRead( s_JamBase* Base_PS,
uint32_t User_I,
s_JamLastRead* Record_PS )
{
s_JamLastRead Record_S;
int Pos_I;
if (!Record_PS)
return JAM_BAD_PARAM;
if ( fseek( Base_PS->LrdFile_PS, 0, SEEK_SET ) ) {
Base_PS->Errno_I = errno;
return JAM_IO_ERROR;
}
for ( Pos_I = 0; ; Pos_I++ ) {
if ( 1 > freadjamlastread(Base_PS->LrdFile_PS,&Record_S) ) {
if ( feof(Base_PS->LrdFile_PS) )
return JAM_NO_USER;
Base_PS->Errno_I = errno;
return JAM_IO_ERROR;
}
if ( Record_S.UserID == User_I ) {
Base_PS->LastUserPos_I = Pos_I;
Base_PS->LastUserId_I = User_I;
*Record_PS = Record_S;
return 0;
}
}
return 0;
}
/***********************************************************************
**
** JAM_WriteLastRead - Write LastRead record
**
***********************************************************************/
int JAM_WriteLastRead( s_JamBase* Base_PS,
uint32_t User_I,
s_JamLastRead* Record_PS )
{
s_JamLastRead Record_S;
int Pos_I;
if (!Record_PS)
return JAM_BAD_PARAM;
/* if the last read is stored */
if ( User_I == Base_PS->LastUserId_I ) {
Pos_I = Base_PS->LastUserPos_I * sizeof( s_JamLastRead );
if ( fseek( Base_PS->LrdFile_PS, Pos_I, SEEK_SET ) ) {
Base_PS->Errno_I = errno;
return JAM_IO_ERROR;
}
/* be safe, check it */
if ( 1 > freadjamlastread(Base_PS->LrdFile_PS,&Record_S) ) {
Base_PS->Errno_I = errno;
return JAM_IO_ERROR;
}
/* is it where we expected it to be? */
if ( User_I == Record_S.UserID ) {
if ( fseek( Base_PS->LrdFile_PS, Pos_I, SEEK_SET ) ) {
Base_PS->Errno_I = errno;
return JAM_IO_ERROR;
}
if ( 1 > fwritejamlastread(Base_PS->LrdFile_PS,Record_PS) ) {
Base_PS->Errno_I = errno;
return JAM_IO_ERROR;
}
fflush(Base_PS -> LrdFile_PS);
return 0;
}
}
/* no last position, or position incorrect */
if ( fseek( Base_PS->LrdFile_PS, 0, SEEK_SET ) ) {
Base_PS->Errno_I = errno;
return JAM_IO_ERROR;
}
for ( Pos_I = 0; ; Pos_I++ ) {
if ( 1 > freadjamlastread(Base_PS->LrdFile_PS,&Record_S) ) {
if ( feof(Base_PS->LrdFile_PS) ) {
/* user not in file, append a new record */
if ( fseek( Base_PS->LrdFile_PS, 0, SEEK_END ) ) {
Base_PS->Errno_I = errno;
return JAM_IO_ERROR;
}
break;
}
Base_PS->Errno_I = errno;
return JAM_IO_ERROR;
}
/* found the user? */
if ( Record_S.UserID == User_I ) {
if ( fseek( Base_PS->LrdFile_PS, Pos_I * sizeof(s_JamLastRead),
SEEK_SET ) ) {
Base_PS->Errno_I = errno;
return JAM_IO_ERROR;
}
break;
}
}
if ( 1 > fwritejamlastread(Base_PS->LrdFile_PS,Record_PS) ) {
Base_PS->Errno_I = errno;
return JAM_IO_ERROR;
}
fflush( Base_PS->LrdFile_PS );
return 0;
}

591
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/*
JAMLIB - A JAM subroutine library
Copyright (C) 1999 Bj<42>rn Stenberg
This library 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 2.1 of the License, or (at your option) any later version.
This library 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 this library; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
Changes made by Johan Billing 2000-04-16:
- Added support for Win32 and Linux
- Changed JAM_OpenMB to open files in binary mode
- Changed source to use feof() instead of errno == EPASTEOF
- Changed source to use structrw to read and write structures
- Fixed broken JAM_FindUser()
- #includes string.h and stdlib.h instead of memory.h
Backported changes from JAMLIB 1.4.7 made by Johan Billing 2003-10-26
- Now uses calloc instead of malloc/memset
- (*NewArea_PPS) will be set to zero even if calloc() failed in
JAM_OpenMB() and JAM_CreateMB()
- JAM_CreateMB() no longer attempts to forever to lock the newly created
messagebase. If the first attempt fails, it will return an error.
- jam_Lock() now sets Base_PS->Errno under Linux
Other changes made by Johan Billing 2003-10-26
- Fixed comparison between signed and unsigned variable in JAM_GetMBSize()
- JAM_CreateMB() would not unlock and close the newly created messagebase
upon failure.
Changes made by Johan Billing 2004-07-10
- Updated the Win32-specific parts of the code to make it compatible with
newer versions of MinGW (tested with 3.1.0-1):
* Now uses Sleep() instead of sleep()
* Changed _LK_UNLOCK to _LK_UNLCK in jam_Lock()
*/
/***********************************************************************
**
** MBASE.C -- Message base handling
**
** Author: Bj<42>rn Stenberg (bjorn.stenberg@sth.frontec.se)
**
***********************************************************************/
#include <stdio.h>
#include <errno.h>
#include <time.h>
#include <stdlib.h>
#include <string.h>
#include "jam.h"
#include "structrw.h"
#if defined( __OS2__ )
#include <os2.h> /* ANSI C does not include file locking :-( */
#endif
#if defined( __WIN32__ )
#include <sys/locking.h>
#include <io.h>
#include <windows.h>
#if !defined( _LK_UNLCK ) && defined ( _LK_UNLOCK )
#define _LK_UNLCK _LK_UNLOCK /* For backwards compatibility */
#endif
#endif
#if defined( __LINUX__ )
#include <sys/file.h>
#include <unistd.h>
#endif
#define OS_ERROR_OFFSET 10000
#if defined( __OS2__ )
#define JAM_Sleep( _x_ ) DosSleep( _x_*1000 )
#endif
#if defined( __WIN32__ )
#define JAM_Sleep(x) Sleep(x*1000)
#endif
#if defined( __LINUX__ )
#define JAM_Sleep(x) sleep(x)
#endif
/*************************************<**********************************
**
** File-global functions
**
***********************************************************************/
int jam_Open( s_JamBase* Base_PS, char* Filename_PC, char* Mode_PC );
int jam_Lock( s_JamBase* Base_PS, int DoLock_I );
/***********************************************************************
**
** JAM_OpenMB - Open message base
**
***********************************************************************/
int JAM_OpenMB( char* Basename_PC, s_JamBase** NewArea_PPS )
{
s_JamBase* Base_PS;
int Status_I;
if ( !NewArea_PPS )
return JAM_BAD_PARAM;
*NewArea_PPS = NULL;
Base_PS = (s_JamBase*) calloc( 1, sizeof( s_JamBase ) );
if (!Base_PS)
return JAM_NO_MEMORY;
*NewArea_PPS = Base_PS;
Status_I = jam_Open( Base_PS, Basename_PC, "r+b" );
if ( Status_I ) {
return Status_I;
}
return 0;
}
/***********************************************************************
**
** JAM_CreateMB - Create a new message base
**
***********************************************************************/
int JAM_CreateMB( char* Basename_PC,
uint32_t BaseMsg_I,
s_JamBase** NewArea_PPS )
{
s_JamBaseHeader Base_S;
int Status_I;
s_JamBase* Base_PS;
if ( !NewArea_PPS || !BaseMsg_I )
return JAM_BAD_PARAM;
*NewArea_PPS = NULL;
Base_PS = (s_JamBase*) calloc( 1, sizeof( s_JamBase ) );
if (!Base_PS)
return JAM_NO_MEMORY;
*NewArea_PPS = Base_PS;
Status_I = jam_Open( Base_PS, Basename_PC, "w+b" );
if ( Status_I )
return Status_I;
Base_S.DateCreated = time(NULL);
Base_S.ModCounter = 0;
Base_S.ActiveMsgs = 0;
Base_S.PasswordCRC = 0xffffffff;
Base_S.BaseMsgNum = BaseMsg_I;
memset( &Base_S.RSRVD, 0, sizeof( Base_S.RSRVD ) );
Status_I = JAM_LockMB( Base_PS, 0 ); /* If the new base cannot be locked directly, something is seriously wrong */
if ( Status_I ) {
JAM_CloseMB(Base_PS);
return Status_I;
}
Status_I = JAM_WriteMBHeader( Base_PS, &Base_S );
if ( Status_I ) {
JAM_UnlockMB( Base_PS );
JAM_CloseMB(Base_PS);
return Status_I;
}
JAM_UnlockMB( Base_PS );
return 0;
}
/***********************************************************************
**
** JAM_CloseMB - Close message base
**
***********************************************************************/
int JAM_CloseMB( s_JamBase* Base_PS )
{
if ( Base_PS->Locked_I ) {
int Status_I = JAM_UnlockMB( Base_PS );
if ( Status_I )
return Status_I;
}
if ( Base_PS->HdrFile_PS ) {
fclose( Base_PS->HdrFile_PS ); Base_PS->HdrFile_PS = NULL;
fclose( Base_PS->TxtFile_PS ); Base_PS->TxtFile_PS = NULL;
fclose( Base_PS->IdxFile_PS ); Base_PS->IdxFile_PS = NULL;
fclose( Base_PS->LrdFile_PS ); Base_PS->LrdFile_PS = NULL;
}
Base_PS->Locked_I = 0;
return 0;
}
/***********************************************************************
**
** JAM_RemoveMB - Remove a message base
**
***********************************************************************/
int JAM_RemoveMB( s_JamBase* Base_PS, char* Basename_PC )
{
char Filename_AC[250];
int Status_AI[4];
/* .JHR file */
sprintf( Filename_AC, "%s%s", Basename_PC, EXT_HDRFILE );
Status_AI[0] = remove( Filename_AC );
if ( Status_AI[0] )
Base_PS->Errno_I = errno;
/* .JDT file */
sprintf( Filename_AC, "%s%s", Basename_PC, EXT_TXTFILE );
Status_AI[1] = remove( Filename_AC );
if ( Status_AI[1] )
Base_PS->Errno_I = errno;
/* .JDX file */
sprintf( Filename_AC, "%s%s", Basename_PC, EXT_IDXFILE );
Status_AI[2] = remove( Filename_AC );
if ( Status_AI[2] )
Base_PS->Errno_I = errno;
/* .JLR file */
sprintf( Filename_AC, "%s%s", Basename_PC, EXT_LRDFILE );
Status_AI[3] = remove( Filename_AC );
if ( Status_AI[3] )
Base_PS->Errno_I = errno;
if (Status_AI[0] || Status_AI[1] || Status_AI[2] || Status_AI[3])
return JAM_IO_ERROR;
return 0;
}
/***********************************************************************
**
** JAM_GetMBSize - Get the number of messages in message base
**
***********************************************************************/
int JAM_GetMBSize( s_JamBase* Base_PS, uint32_t* Messages_PI )
{
long Offset_I;
/* go to end of index file */
if ( fseek( Base_PS->IdxFile_PS, 0, SEEK_END ) ) {
Base_PS->Errno_I = errno;
return JAM_IO_ERROR;
}
Offset_I = ftell( Base_PS->IdxFile_PS );
if ( Offset_I == -1 ) {
Base_PS->Errno_I = errno;
return JAM_IO_ERROR;
}
*Messages_PI = Offset_I / sizeof( s_JamIndex );
return 0;
}
/***********************************************************************
**
** JAM_LockMB - Lock message base
**
***********************************************************************/
int JAM_LockMB( s_JamBase* Base_PS, int Timeout_I )
{
if ( Base_PS->Locked_I )
return 0;
switch ( Timeout_I )
{
/* unlimited timeout */
case -1:
while ( jam_Lock( Base_PS, 1 ) == JAM_LOCK_FAILED )
JAM_Sleep( 1 );
return 0;
/* no timeout */
case 0:
return jam_Lock( Base_PS, 1 );
/* X seconds timeout */
default:
{
time_t Time_I = time(NULL) + Timeout_I;
while ( time(NULL) < Time_I )
{
int Result_I;
Result_I = jam_Lock( Base_PS, 1 );
if ( Result_I == JAM_LOCK_FAILED )
JAM_Sleep( 1 );
else
return Result_I;
}
return JAM_LOCK_FAILED;
}
}
}
/***********************************************************************
**
** JAM_UnlockMB - Flush all writes and unlock message base
**
***********************************************************************/
int JAM_UnlockMB( s_JamBase* Base_PS )
{
fflush( Base_PS->HdrFile_PS );
fflush( Base_PS->TxtFile_PS );
fflush( Base_PS->IdxFile_PS );
fflush( Base_PS->LrdFile_PS );
return jam_Lock( Base_PS, 0 );
}
/***********************************************************************
**
** JAM_ReadMBHeader - Read message base header
**
***********************************************************************/
int JAM_ReadMBHeader( s_JamBase* Base_PS, s_JamBaseHeader* Header_PS )
{
if ( !Header_PS || !Base_PS )
return JAM_BAD_PARAM;
if ( fseek( Base_PS->HdrFile_PS, 0, SEEK_SET ) ) {
Base_PS->Errno_I = errno;
return JAM_IO_ERROR;
}
if ( 1 > freadjambaseheader(Base_PS->HdrFile_PS,Header_PS) ) {
Base_PS->Errno_I = errno;
return JAM_IO_ERROR;
}
return 0;
}
/***********************************************************************
**
** JAM_WriteMBHeader - Write message base header
**
***********************************************************************/
int JAM_WriteMBHeader( s_JamBase* Base_PS, s_JamBaseHeader* Header_PS )
{
if ( !Header_PS || !Base_PS )
return JAM_BAD_PARAM;
if ( !Base_PS->Locked_I )
return JAM_NOT_LOCKED;
if ( fseek( Base_PS->HdrFile_PS, 0, SEEK_SET ) ) {
Base_PS->Errno_I = errno;
return JAM_IO_ERROR;
}
/* ensure header looks right */
memcpy( Header_PS->Signature, HEADERSIGNATURE, 4 );
Header_PS->ModCounter++;
if ( 1 > fwritejambaseheader(Base_PS->HdrFile_PS,Header_PS) ) {
Base_PS->Errno_I = errno;
return JAM_IO_ERROR;
}
fflush( Base_PS->HdrFile_PS );
return 0;
}
/***********************************************************************
**
** JAM_FindUser - Scan scan file for messages to a user
**
***********************************************************************/
int JAM_FindUser( s_JamBase* Base_PS,
uint32_t UserCrc_I,
uint32_t StartMsg_I,
uint32_t* MsgNo_PI )
{
uint32_t MsgNo_I;
/* go to start message */
if ( fseek( Base_PS->IdxFile_PS, StartMsg_I * sizeof( s_JamIndex ),
SEEK_SET ) ) {
Base_PS->Errno_I = errno;
return JAM_IO_ERROR;
}
/* scan file */
for ( MsgNo_I = StartMsg_I; ; MsgNo_I++ ) {
s_JamIndex Index_S;
if ( 1 > freadjamindex(Base_PS->IdxFile_PS,&Index_S) ) {
if ( feof(Base_PS->IdxFile_PS) )
return JAM_NO_USER;
Base_PS->Errno_I = errno;
return JAM_IO_ERROR;
}
if ( Index_S.UserCRC == UserCrc_I )
break;
}
*MsgNo_PI = MsgNo_I;
return 0;
}
/***********************************************************************
**
** jam_Lock - Lock/unlock a message base
**
***********************************************************************/
int jam_Lock( s_JamBase* Base_PS, int DoLock_I )
{
#if defined(__OS2__)
FILELOCK Area_S;
APIRET Status_I;
ULONG Timeout_I = 0;
int Handle_I;
Handle_I = fileno( Base_PS->HdrFile_PS );
if ( Handle_I == -1 ) {
Base_PS->Errno_I = errno;
return JAM_IO_ERROR;
}
Area_S.lOffset = 0;
Area_S.lRange = 1;
if ( DoLock_I )
Status_I = DosSetFileLocks( Handle_I, NULL, &Area_S, Timeout_I, 0 );
else
Status_I = DosSetFileLocks( Handle_I, &Area_S, NULL, Timeout_I, 0 );
if ( Status_I ) {
if ( 232 == Status_I )
return JAM_LOCK_FAILED;
Base_PS->Errno_I = Status_I + OS_ERROR_OFFSET;
return JAM_IO_ERROR;
}
if ( DoLock_I )
Base_PS->Locked_I = 1;
else
Base_PS->Locked_I = 0;
return 0;
#elif defined(__WIN32__)
int Handle_I,Status_I;
fseek(Base_PS->HdrFile_PS,0,SEEK_SET); /* Lock from start of file */
Handle_I = fileno( Base_PS->HdrFile_PS );
if ( Handle_I == -1 ) {
Base_PS->Errno_I = errno;
return JAM_IO_ERROR;
}
if ( DoLock_I )
Status_I = _locking(Handle_I,_LK_NBLCK,1);
else
Status_I = _locking(Handle_I,_LK_UNLCK,1);
if ( Status_I )
return JAM_LOCK_FAILED;
if ( DoLock_I )
Base_PS->Locked_I = 1;
else
Base_PS->Locked_I = 0;
return 0;
#elif defined(__LINUX__)
int Handle_I,Status_I;
struct flock fl;
fseek(Base_PS->HdrFile_PS,0,SEEK_SET); /* Lock from start of file */
Handle_I = fileno( Base_PS->HdrFile_PS );
if ( Handle_I == -1 ) {
Base_PS->Errno_I = errno;
return JAM_IO_ERROR;
}
if(DoLock_I) fl.l_type=F_WRLCK;
else fl.l_type=F_UNLCK;
fl.l_whence=SEEK_SET;
fl.l_start=0;
fl.l_len=1;
fl.l_pid=getpid();
Status_I=fcntl(Handle_I,F_SETLK,&fl);
if ( Status_I ) {
Base_PS->Errno_I = errno;
return JAM_LOCK_FAILED;
}
if ( DoLock_I )
Base_PS->Locked_I = 1;
else
Base_PS->Locked_I = 0;
return 0;
#else
#error Unsupported platform
#endif
}
/***********************************************************************
**
** jam_Open - Open/create message base files
**
***********************************************************************/
int jam_Open( s_JamBase* Base_PS, char* Basename_PC, char* Mode_PC )
{
char Filename_AC[250];
/* .JHR file */
sprintf( Filename_AC, "%s%s", Basename_PC, EXT_HDRFILE );
Base_PS->HdrFile_PS = fopen( Filename_AC, Mode_PC );
if (!Base_PS->HdrFile_PS) {
Base_PS->Errno_I = errno;
return JAM_IO_ERROR;
}
/* .JDT file */
sprintf( Filename_AC, "%s%s", Basename_PC, EXT_TXTFILE );
Base_PS->TxtFile_PS = fopen( Filename_AC, Mode_PC );
if (!Base_PS->TxtFile_PS) {
Base_PS->Errno_I = errno;
fclose( Base_PS->HdrFile_PS ); Base_PS->HdrFile_PS = NULL;
return JAM_IO_ERROR;
}
/* .JDX file */
sprintf( Filename_AC, "%s%s", Basename_PC, EXT_IDXFILE );
Base_PS->IdxFile_PS = fopen( Filename_AC, Mode_PC );
if (!Base_PS->IdxFile_PS) {
Base_PS->Errno_I = errno;
fclose( Base_PS->HdrFile_PS ); Base_PS->HdrFile_PS = NULL;
fclose( Base_PS->TxtFile_PS ); Base_PS->TxtFile_PS = NULL;
return JAM_IO_ERROR;
}
/* .JLR file */
sprintf( Filename_AC, "%s%s", Basename_PC, EXT_LRDFILE );
Base_PS->LrdFile_PS = fopen( Filename_AC, Mode_PC );
if (!Base_PS->LrdFile_PS) {
Base_PS->Errno_I = errno;
fclose( Base_PS->HdrFile_PS ); Base_PS->HdrFile_PS = NULL;
fclose( Base_PS->TxtFile_PS ); Base_PS->TxtFile_PS = NULL;
fclose( Base_PS->IdxFile_PS ); Base_PS->IdxFile_PS = NULL;
return JAM_IO_ERROR;
}
return 0;
}

625
jamlib/message.c Normal file
View File

@@ -0,0 +1,625 @@
/*
JAMLIB - A JAM subroutine library
Copyright (C) 1999 Bj<42>rn Stenberg
This library 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 2.1 of the License, or (at your option) any later version.
This library 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 this library; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
Changes made by Johan Billing 2000-04-16:
- Changed source to use feof() instead of errno == EPASTEOF
- Changed source to use structrw to read and write structures
- Added JAM_AddEmptyMessage()
- Added error messages JAM_NO_MESSAGE and JAM_CORRUPT_MSG for
JAM_ReadMsgHeader()
- #includes stdlib.h instead of malloc.h and memory.h
- Fixed a bug that caused JAM_AddMessage() to fail when trying to
add an empty message to the messagebase under Linux.
Backported changes from JAMLIB 1.4.7 made by Johan Billing 2003-10-26
- Fixed memory leaks that would occur if JAM_ReadMsgHeader() failed
- Added JAM_DeleteMessage()
Other changes made by Johan Billing 2003-10-26
- Fixed comparison between signed and unsigned variable in JAM_AddMessage()
- Improved handling of ActiveMsgs counter. JAM_AddMessage() now only
increases ActiveMsgs if the added message does not have MSG_DELETED set.
JAM_ChangeMsgHeader() decreases ActiveMsgs if MSG_DELETED is set and the
message wasn't already deleted. JAM_DeleteMessage() now only decreases
ActiveMsgs if the message wasn't already deleted.
*/
/***********************************************************************
**
** Message.C -- Message handling
**
** Author: Bj<42>rn Stenberg (bjorn.stenberg@sth.frontec.se)
**
***********************************************************************/
#include <stdio.h>
#include <errno.h>
#include <stdlib.h>
#include <string.h>
#include "jam.h"
#include "structrw.h"
/***********************************************************************
**
** JAM_ReadMsgHeader - Read message header
**
***********************************************************************/
int JAM_ReadMsgHeader( s_JamBase* Base_PS,
uint32_t MsgNo_I,
s_JamMsgHeader* Header_PS,
s_JamSubPacket** SubfieldPack_PPS )
{
s_JamIndex Index_S;
if ( !Base_PS || !Header_PS )
return JAM_BAD_PARAM;
/* find index record */
if ( fseek( Base_PS->IdxFile_PS, MsgNo_I * sizeof( s_JamIndex ), SEEK_SET ) ) {
Base_PS->Errno_I = errno;
return JAM_IO_ERROR;
}
/* read index record */
if ( 1 > freadjamindex(Base_PS->IdxFile_PS,&Index_S) ) {
Base_PS->Errno_I = errno;
return JAM_IO_ERROR;
}
/* message is not there */
if(Index_S.HdrOffset == 0xffffffff && Index_S.UserCRC == 0xffffffff)
{
return JAM_NO_MESSAGE;
}
/* find header */
if ( fseek( Base_PS->HdrFile_PS, Index_S.HdrOffset, SEEK_SET ) ) {
Base_PS->Errno_I = errno;
return JAM_IO_ERROR;
}
/* read header */
if ( 1 > freadjammsgheader(Base_PS->HdrFile_PS,Header_PS) ) {
Base_PS->Errno_I = errno;
return JAM_IO_ERROR;
}
/* are Subfields requested? */
if ( SubfieldPack_PPS && Header_PS->SubfieldLen ) {
s_JamSubPacket* SubPacket_PS;
s_JamSubfield Subfield_S;
char* Buf_PC;
char* Ptr_PC;
char* Roof_PC;
int BufSize_I = Header_PS->SubfieldLen;
Buf_PC = (void*) malloc( BufSize_I );
if ( !Buf_PC )
return JAM_NO_MEMORY;
/* read all subfields */
if ( 1 > fread( Buf_PC, BufSize_I, 1, Base_PS->HdrFile_PS ) ) {
Base_PS->Errno_I = errno;
free (Buf_PC);
return JAM_IO_ERROR;
}
SubPacket_PS = JAM_NewSubPacket();
if ( !SubPacket_PS ) {
free (Buf_PC);
return JAM_NO_MEMORY;
}
Roof_PC = Buf_PC + BufSize_I;
/* cut out the subfields */
for ( Ptr_PC = Buf_PC;
Ptr_PC < Roof_PC;
Ptr_PC += Subfield_S.DatLen + SIZE_JAMSAVESUBFIELD ) {
int Status_I;
getjamsubfield(Ptr_PC,&Subfield_S);
if((char *)Subfield_S.Buffer + Subfield_S.DatLen > Roof_PC) {
JAM_DelSubPacket( SubPacket_PS );
free (Buf_PC);
return JAM_CORRUPT_MSG;
}
Status_I = JAM_PutSubfield( SubPacket_PS, &Subfield_S );
if ( Status_I ) {
JAM_DelSubPacket( SubPacket_PS );
free (Buf_PC);
return Status_I;
}
}
free( Buf_PC );
*SubfieldPack_PPS = SubPacket_PS;
}
else
if ( SubfieldPack_PPS )
/* fields requested but none found */
/* return an empty packet */
*SubfieldPack_PPS = JAM_NewSubPacket();
return 0;
}
/***********************************************************************
**
** JAM_ReadMsgText - Read message text
**
***********************************************************************/
int JAM_ReadMsgText( s_JamBase* Base_PS,
uint32_t Offset_I,
uint32_t Length_I,
char* Buffer_PC )
{
if ( !Base_PS || !Buffer_PC )
return JAM_BAD_PARAM;
if ( !Length_I )
return 0;
if ( fseek( Base_PS->TxtFile_PS, Offset_I, SEEK_SET ) ) {
Base_PS->Errno_I = errno;
return JAM_IO_ERROR;
}
if ( 1 > fread( Buffer_PC, Length_I, 1, Base_PS->TxtFile_PS ) ) {
Base_PS->Errno_I = errno;
return JAM_IO_ERROR;
}
return 0;
}
/***********************************************************************
**
** JAM_ChangeMsgHeader - Change a message header
**
***********************************************************************/
int JAM_ChangeMsgHeader( s_JamBase* Base_PS,
uint32_t MsgNo_I,
s_JamMsgHeader* Header_PS )
{
s_JamBaseHeader BaseHeader_S;
s_JamMsgHeader OldHeader_S;
s_JamIndex Index_S;
int Status_I;
if ( !Base_PS )
return JAM_BAD_PARAM;
if ( !Base_PS->Locked_I )
return JAM_NOT_LOCKED;
/* read message base header */
Status_I = JAM_ReadMBHeader( Base_PS, &BaseHeader_S );
if ( Status_I )
return Status_I;
/* find index record */
if ( fseek( Base_PS->IdxFile_PS, MsgNo_I * sizeof( s_JamIndex ),
SEEK_SET ) ) {
Base_PS->Errno_I = errno;
return JAM_IO_ERROR;
}
/* read index record */
if ( 1 > freadjamindex(Base_PS->IdxFile_PS,&Index_S) ) {
Base_PS->Errno_I = errno;
return JAM_IO_ERROR;
}
/* find header */
if ( fseek( Base_PS->HdrFile_PS, Index_S.HdrOffset, SEEK_SET ) ) {
Base_PS->Errno_I = errno;
return JAM_IO_ERROR;
}
/* read old message header */
if ( 1 > freadjammsgheader( Base_PS->HdrFile_PS, &OldHeader_S ) ) {
Base_PS->Errno_I = errno;
return JAM_IO_ERROR;
}
/* find header */
if ( fseek( Base_PS->HdrFile_PS, Index_S.HdrOffset, SEEK_SET ) ) {
Base_PS->Errno_I = errno;
return JAM_IO_ERROR;
}
/* write header */
if ( 1 > fwritejammsgheader(Base_PS->HdrFile_PS,Header_PS) ) {
Base_PS->Errno_I = errno;
return JAM_IO_ERROR;
}
if( ( Header_PS->Attribute & MSG_DELETED ) && !(OldHeader_S.Attribute & MSG_DELETED) ) {
/* message is deleted now but wasn't before */
BaseHeader_S.ActiveMsgs--;
}
Status_I = JAM_WriteMBHeader( Base_PS, &BaseHeader_S );
if ( Status_I )
return Status_I;
return 0;
}
/***********************************************************************
**
** JAM_AddMessage - Add a message to a message base
**
***********************************************************************/
int JAM_AddMessage( s_JamBase* Base_PS,
s_JamMsgHeader* Header_PS,
s_JamSubPacket* SubPack_PS,
char* Text_PC,
uint32_t TextLen_I )
{
s_JamBaseHeader BaseHeader_S;
s_JamIndex Index_S;
long Offset_I;
int Status_I;
uint32_t TotLen_I;
if ( !Base_PS )
return JAM_BAD_PARAM;
if ( !Base_PS->Locked_I )
return JAM_NOT_LOCKED;
/* read message base header */
Status_I = JAM_ReadMBHeader( Base_PS, &BaseHeader_S );
if ( Status_I )
return Status_I;
/*
** Add text if any
*/
Header_PS->TxtOffset = 0;
Header_PS->TxtLen = 0;
if(Text_PC && TextLen_I!=0)
{
/* go to end of text file */
if ( fseek( Base_PS->TxtFile_PS, 0, SEEK_END ) ) {
Base_PS->Errno_I = errno;
return JAM_IO_ERROR;
}
/* store text offset (for header) */
Offset_I = ftell( Base_PS->TxtFile_PS );
if ( Offset_I == -1 ) {
Base_PS->Errno_I = errno;
return JAM_IO_ERROR;
}
Header_PS->TxtOffset = Offset_I;
Header_PS->TxtLen = TextLen_I;
/* write text */
if ( 1 > fwrite( Text_PC, TextLen_I, 1, Base_PS->TxtFile_PS ) ) {
Base_PS->Errno_I = errno;
return JAM_IO_ERROR;
}
}
/*
** Add header
*/
/* go to end of header file */
if ( fseek( Base_PS->HdrFile_PS, 0, SEEK_END ) ) {
Base_PS->Errno_I = errno;
return JAM_IO_ERROR;
}
/* calculate the size of all Subfields */
TotLen_I = 0;
if ( SubPack_PS ) {
s_JamSubfield* Subfield_PS;
for ( Subfield_PS = JAM_GetSubfield( SubPack_PS ); Subfield_PS;
Subfield_PS = JAM_GetSubfield( NULL ) )
TotLen_I += sizeof( s_JamSaveSubfield ) + Subfield_PS->DatLen;
}
Header_PS->SubfieldLen = TotLen_I;
/* go to end of index file */
if ( fseek( Base_PS->IdxFile_PS, 0, SEEK_END ) ) {
Base_PS->Errno_I = errno;
return JAM_IO_ERROR;
}
/* find out new message number (for message header) */
Offset_I = ftell( Base_PS->IdxFile_PS );
if ( Offset_I == -1 ) {
Base_PS->Errno_I = errno;
return JAM_IO_ERROR;
}
/* update header */
Header_PS->MsgNum = Offset_I / sizeof( s_JamIndex ) +
BaseHeader_S.BaseMsgNum;
memcpy( Header_PS->Signature, HEADERSIGNATURE, 4 );
Header_PS->Revision = CURRENTREVLEV;
/* go to end of header file */
if ( fseek( Base_PS->HdrFile_PS, 0, SEEK_END ) ) {
Base_PS->Errno_I = errno;
return JAM_IO_ERROR;
}
/* find out new header offset (for index record) */
Offset_I = ftell( Base_PS->HdrFile_PS );
if ( Offset_I == -1 ) {
Base_PS->Errno_I = errno;
return JAM_IO_ERROR;
}
Index_S.HdrOffset = Offset_I;
/* write new header */
if ( 1 > fwritejammsgheader(Base_PS->HdrFile_PS,Header_PS) ) {
Base_PS->Errno_I = errno;
return JAM_IO_ERROR;
}
/* write Subfields */
if ( SubPack_PS ) {
s_JamSubfield* Subfield_PS;
char User_AC[101];
/* clear username */
User_AC[0] = 0;
for ( Subfield_PS = JAM_GetSubfield( SubPack_PS ); Subfield_PS;
Subfield_PS = JAM_GetSubfield( NULL ) ) {
/* first, save Subfield header */
if ( 1 > fwritejamsavesubfield(Base_PS->HdrFile_PS,(s_JamSaveSubfield *)Subfield_PS) ) {
Base_PS->Errno_I = errno;
return JAM_IO_ERROR;
}
/* then, save Subfield data if any*/
if(Subfield_PS->DatLen) {
if ( 1 > fwrite( Subfield_PS->Buffer, Subfield_PS->DatLen,
1, Base_PS->HdrFile_PS ) ) {
Base_PS->Errno_I = errno;
return JAM_IO_ERROR;
}
}
/* store username for index file */
if ( Subfield_PS->LoID == JAMSFLD_RECVRNAME ) {
memcpy( User_AC, Subfield_PS->Buffer, Subfield_PS->DatLen );
User_AC[ Subfield_PS->DatLen ] = 0;
}
}
/* update index record */
if ( User_AC[0] )
Index_S.UserCRC = JAM_Crc32( User_AC, strlen( User_AC ) );
else
Index_S.UserCRC = JAM_NO_CRC;
}
else
/* update index record */
Index_S.UserCRC = JAM_NO_CRC;
/*
** Add index
*/
/* write index record */
if ( 1 > fwritejamindex(Base_PS->IdxFile_PS,&Index_S) ) {
Base_PS->Errno_I = errno;
return JAM_IO_ERROR;
}
if(!(Header_PS->Attribute & MSG_DELETED))
BaseHeader_S.ActiveMsgs++; /* Only increase ActiveMsgs if MSG_DELETED not set */
/* write message base header */
Status_I = JAM_WriteMBHeader( Base_PS, &BaseHeader_S );
if ( Status_I )
return Status_I;
return 0;
}
/***********************************************************************
**
** JAM_AddEmptyMessage - Add a empty message entry to a message base
**
***********************************************************************/
int JAM_AddEmptyMessage( s_JamBase* Base_PS)
{
s_JamIndex Index_S;
if ( !Base_PS )
return JAM_BAD_PARAM;
if ( !Base_PS->Locked_I )
return JAM_NOT_LOCKED;
/* go to end of index file */
if ( fseek( Base_PS->IdxFile_PS, 0, SEEK_END ) ) {
Base_PS->Errno_I = errno;
return JAM_IO_ERROR;
}
/*
** Add index
*/
Index_S.HdrOffset = 0xffffffff;
Index_S.UserCRC = 0xffffffff;
/* write index record */
if ( 1 > fwritejamindex(Base_PS->IdxFile_PS,&Index_S) ) {
Base_PS->Errno_I = errno;
return JAM_IO_ERROR;
}
return 0;
}
/***********************************************************************
**
** JAM_DeleteMessage - Delete message from messagebase
**
***********************************************************************/
int JAM_DeleteMessage( s_JamBase* Base_PS,
uint32_t MsgNo_I )
{
s_JamBaseHeader BaseHeader_S;
s_JamMsgHeader Header_S;
s_JamIndex Index_S;
int Status_I;
uint32_t OldAttribute_I;
if ( !Base_PS )
return JAM_BAD_PARAM;
if ( !Base_PS->Locked_I )
return JAM_NOT_LOCKED;
/* read message base header */
Status_I = JAM_ReadMBHeader( Base_PS, &BaseHeader_S );
if ( Status_I )
return Status_I;
/* find index record */
if ( fseek( Base_PS->IdxFile_PS, MsgNo_I * sizeof( s_JamIndex ), SEEK_SET ) ) {
Base_PS->Errno_I = errno;
return JAM_IO_ERROR;
}
/* read index record */
if ( 1 > freadjamindex( Base_PS->IdxFile_PS, &Index_S ) ) {
Base_PS->Errno_I = errno;
return JAM_IO_ERROR;
}
/* message is not there */
if(Index_S.HdrOffset == 0xffffffff && Index_S.UserCRC == 0xffffffff)
{
return JAM_NO_MESSAGE;
}
/* find header */
if ( fseek( Base_PS->HdrFile_PS, Index_S.HdrOffset, SEEK_SET ) ) {
Base_PS->Errno_I = errno;
return JAM_IO_ERROR;
}
/* read header */
if ( 1 > freadjammsgheader( Base_PS->HdrFile_PS, &Header_S ) ) {
Base_PS->Errno_I = errno;
return JAM_IO_ERROR;
}
OldAttribute_I = Header_S.Attribute;
Header_S.Attribute |= MSG_DELETED;
/* find header */
if ( fseek( Base_PS->HdrFile_PS, Index_S.HdrOffset, SEEK_SET ) ) {
Base_PS->Errno_I = errno;
return JAM_IO_ERROR;
}
/* write header */
if ( 1 > fwritejammsgheader( Base_PS->HdrFile_PS, &Header_S ) ) {
Base_PS->Errno_I = errno;
return JAM_IO_ERROR;
}
/* find index record */
if ( fseek( Base_PS->IdxFile_PS, MsgNo_I * sizeof( s_JamIndex ), SEEK_SET ) ) {
Base_PS->Errno_I = errno;
return JAM_IO_ERROR;
}
Index_S.HdrOffset = 0xffffffff;
Index_S.UserCRC = 0xffffffff;
/* write index record */
if ( 1 > fwritejamindex(Base_PS->IdxFile_PS,&Index_S) ) {
Base_PS->Errno_I = errno;
return JAM_IO_ERROR;
}
if(!(OldAttribute_I & MSG_DELETED))
BaseHeader_S.ActiveMsgs--; /* decrease ActiveMsgs if the message wasn't already deleted */
/* write message base header */
Status_I = JAM_WriteMBHeader( Base_PS, &BaseHeader_S );
if ( Status_I )
return Status_I;
return 0;
}
/***********************************************************************
**
** JAM_Errno - Report the latest C library error code
**
***********************************************************************/
int JAM_Errno( s_JamBase* Base_PS )
{
return Base_PS->Errno_I;
}
/***********************************************************************
**
** JAM_ClearMsgHeader - Clear a message header
**
***********************************************************************/
int JAM_ClearMsgHeader( s_JamMsgHeader* Header_PS )
{
if (!Header_PS)
return JAM_BAD_PARAM;
memset( Header_PS, 0, sizeof( s_JamMsgHeader ) );
memcpy( Header_PS->Signature, HEADERSIGNATURE, 4 );
Header_PS->Revision = CURRENTREVLEV;
Header_PS->MsgIdCRC = JAM_NO_CRC;
Header_PS->ReplyCRC = JAM_NO_CRC;
Header_PS->PasswordCRC = JAM_NO_CRC;
return 0;
}

239
jamlib/structrw.c Normal file
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/*
structrw - Platform-independent reading and writing of JAM structs
Copyright (C) 1999 Johan Billing
This library 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 2.1 of the License, or (at your option) any later version.
This library 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 this library; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
Changes made by Johan Billing 2003-10-22
- Added #include <string.h>
*/
#include <stdio.h>
#include <string.h>
#include "jam.h"
#include "structrw.h"
uint16_t jamgetuword(char *buf,uint32_t offset)
{
return (uint16_t) buf[offset]+
buf[offset+1]*256;
}
void jamputuword(char *buf,uint32_t offset,uint16_t num)
{
buf[offset]=num%256;
buf[offset+1]=num/256;
}
void jamputuint32_t(char *buf,uint32_t offset,uint32_t num)
{
buf[offset]=num%256;
buf[offset+1]=(num / 256) % 256;
buf[offset+2]=(num / 256 / 256) % 256;
buf[offset+3]=(num / 256 / 256 / 256) % 256;
}
uint32_t jamgetuint32_t(char *buf,uint32_t offset)
{
return (uint32_t) buf[offset]+
buf[offset+1]*256+
buf[offset+2]*256*256+
buf[offset+3]*256*256*256;
}
int freadjambaseheader(FILE *fp,s_JamBaseHeader *s_JamBaseHeader)
{
char buf[SIZE_JAMBASEHEADER];
if(fread(buf,SIZE_JAMBASEHEADER,1,fp) != 1)
return 0;
memcpy(s_JamBaseHeader->Signature,&buf[JAMBASEHEADER_SIGNATURE],4);
s_JamBaseHeader->DateCreated = jamgetuint32_t(buf,JAMBASEHEADER_DATECREATED);
s_JamBaseHeader->ModCounter = jamgetuint32_t(buf,JAMBASEHEADER_MODCOUNTER);
s_JamBaseHeader->ActiveMsgs = jamgetuint32_t(buf,JAMBASEHEADER_ACTIVEMSGS);
s_JamBaseHeader->PasswordCRC = jamgetuint32_t(buf,JAMBASEHEADER_PASSWORDCRC);
s_JamBaseHeader->BaseMsgNum = jamgetuint32_t(buf,JAMBASEHEADER_BASEMSGNUM);
memcpy(s_JamBaseHeader->RSRVD,&buf[JAMBASEHEADER_RSRVD],1000);
return 1;
}
int fwritejambaseheader(FILE *fp,s_JamBaseHeader *s_JamBaseHeader)
{
char buf[SIZE_JAMBASEHEADER];
memcpy(&buf[JAMBASEHEADER_SIGNATURE],s_JamBaseHeader->Signature,4);
jamputuint32_t(buf,JAMBASEHEADER_DATECREATED, s_JamBaseHeader->DateCreated);
jamputuint32_t(buf,JAMBASEHEADER_MODCOUNTER, s_JamBaseHeader->ModCounter);
jamputuint32_t(buf,JAMBASEHEADER_ACTIVEMSGS, s_JamBaseHeader->ActiveMsgs);
jamputuint32_t(buf,JAMBASEHEADER_PASSWORDCRC, s_JamBaseHeader->PasswordCRC );
jamputuint32_t(buf,JAMBASEHEADER_BASEMSGNUM, s_JamBaseHeader->BaseMsgNum);
memcpy(&buf[JAMBASEHEADER_RSRVD],s_JamBaseHeader->RSRVD,1000);
if(fwrite(buf,SIZE_JAMBASEHEADER,1,fp) != 1)
return 0;
return 1;
}
int freadjammsgheader(FILE *fp,s_JamMsgHeader *s_JamMsgHeader)
{
char buf[SIZE_JAMMSGHEADER];
if(fread(buf,SIZE_JAMMSGHEADER,1,fp) != 1)
return 0;
memcpy(s_JamMsgHeader->Signature,&buf[JAMMSGHEADER_SIGNATURE],4);
s_JamMsgHeader->Revision = jamgetuword(buf,JAMMSGHEADER_REVISION);
s_JamMsgHeader->ReservedWord = jamgetuword(buf,JAMMSGHEADER_RESERVEDWORD);
s_JamMsgHeader->SubfieldLen = jamgetuint32_t(buf,JAMMSGHEADER_SUBFIELDLEN);
s_JamMsgHeader->TimesRead = jamgetuint32_t(buf,JAMMSGHEADER_TIMESREAD);
s_JamMsgHeader->MsgIdCRC = jamgetuint32_t(buf,JAMMSGHEADER_MSGIDCRC);
s_JamMsgHeader->ReplyCRC = jamgetuint32_t(buf,JAMMSGHEADER_REPLYCRC);
s_JamMsgHeader->ReplyTo = jamgetuint32_t(buf,JAMMSGHEADER_REPLYTO);
s_JamMsgHeader->Reply1st = jamgetuint32_t(buf,JAMMSGHEADER_REPLY1ST);
s_JamMsgHeader->ReplyNext = jamgetuint32_t(buf,JAMMSGHEADER_REPLYNEXT);
s_JamMsgHeader->DateWritten = jamgetuint32_t(buf,JAMMSGHEADER_DATEWRITTEN);
s_JamMsgHeader->DateReceived = jamgetuint32_t(buf,JAMMSGHEADER_DATERECEIVED);
s_JamMsgHeader->DateProcessed = jamgetuint32_t(buf,JAMMSGHEADER_DATEPROCESSED);
s_JamMsgHeader->MsgNum = jamgetuint32_t(buf,JAMMSGHEADER_MSGNUM);
s_JamMsgHeader->Attribute = jamgetuint32_t(buf,JAMMSGHEADER_ATTRIBUTE);
s_JamMsgHeader->Attribute2 = jamgetuint32_t(buf,JAMMSGHEADER_ATTRIBUTE2);
s_JamMsgHeader->TxtOffset = jamgetuint32_t(buf,JAMMSGHEADER_TXTOFFSET);
s_JamMsgHeader->TxtLen = jamgetuint32_t(buf,JAMMSGHEADER_TXTLEN);
s_JamMsgHeader->PasswordCRC = jamgetuint32_t(buf,JAMMSGHEADER_PASSWORDCRC);
s_JamMsgHeader->Cost = jamgetuint32_t(buf,JAMMSGHEADER_COST);
return 1;
}
int fwritejammsgheader(FILE *fp,s_JamMsgHeader *s_JamMsgHeader)
{
char buf[SIZE_JAMMSGHEADER];
memcpy(&buf[JAMMSGHEADER_SIGNATURE],s_JamMsgHeader->Signature,4);
jamputuword(buf,JAMMSGHEADER_REVISION, s_JamMsgHeader->Revision);
jamputuword(buf,JAMMSGHEADER_RESERVEDWORD, s_JamMsgHeader->ReservedWord);
jamputuint32_t(buf,JAMMSGHEADER_SUBFIELDLEN, s_JamMsgHeader->SubfieldLen);
jamputuint32_t(buf,JAMMSGHEADER_TIMESREAD, s_JamMsgHeader->TimesRead);
jamputuint32_t(buf,JAMMSGHEADER_MSGIDCRC, s_JamMsgHeader->MsgIdCRC);
jamputuint32_t(buf,JAMMSGHEADER_REPLYCRC, s_JamMsgHeader->ReplyCRC );
jamputuint32_t(buf,JAMMSGHEADER_REPLYTO, s_JamMsgHeader->ReplyTo);
jamputuint32_t(buf,JAMMSGHEADER_REPLY1ST, s_JamMsgHeader->Reply1st);
jamputuint32_t(buf,JAMMSGHEADER_REPLYNEXT, s_JamMsgHeader->ReplyNext);
jamputuint32_t(buf,JAMMSGHEADER_DATEWRITTEN, s_JamMsgHeader->DateWritten);
jamputuint32_t(buf,JAMMSGHEADER_DATERECEIVED, s_JamMsgHeader->DateReceived );
jamputuint32_t(buf,JAMMSGHEADER_DATEPROCESSED, s_JamMsgHeader->DateProcessed);
jamputuint32_t(buf,JAMMSGHEADER_MSGNUM, s_JamMsgHeader->MsgNum);
jamputuint32_t(buf,JAMMSGHEADER_ATTRIBUTE, s_JamMsgHeader->Attribute);
jamputuint32_t(buf,JAMMSGHEADER_ATTRIBUTE2, s_JamMsgHeader->Attribute2);
jamputuint32_t(buf,JAMMSGHEADER_TXTOFFSET, s_JamMsgHeader->TxtOffset);
jamputuint32_t(buf,JAMMSGHEADER_TXTLEN, s_JamMsgHeader->TxtLen);
jamputuint32_t(buf,JAMMSGHEADER_PASSWORDCRC, s_JamMsgHeader->PasswordCRC);
jamputuint32_t(buf,JAMMSGHEADER_COST, s_JamMsgHeader->Cost);
if(fwrite(buf,SIZE_JAMMSGHEADER,1,fp) != 1)
return 0;
return 1;
}
int freadjamindex(FILE *fp,s_JamIndex *s_JamIndex)
{
char buf[SIZE_JAMINDEX];
if(fread(buf,SIZE_JAMINDEX,1,fp) != 1)
return 0;
s_JamIndex->UserCRC = jamgetuint32_t(buf,JAMINDEX_USERCRC);
s_JamIndex->HdrOffset = jamgetuint32_t(buf,JAMINDEX_HDROFFSET);
return 1;
}
int fwritejamindex(FILE *fp,s_JamIndex *s_JamIndex)
{
char buf[SIZE_JAMINDEX];
jamputuint32_t(buf,JAMINDEX_USERCRC, s_JamIndex->UserCRC);
jamputuint32_t(buf,JAMINDEX_HDROFFSET, s_JamIndex->HdrOffset);
if(fwrite(buf,SIZE_JAMINDEX,1,fp) != 1)
return 0;
return 1;
}
int freadjamlastread(FILE *fp,s_JamLastRead *s_JamLastRead)
{
char buf[SIZE_JAMLASTREAD];
if(fread(buf,SIZE_JAMLASTREAD,1,fp) != 1)
return 0;
s_JamLastRead->UserCRC = jamgetuint32_t(buf,JAMLASTREAD_USERCRC);
s_JamLastRead->UserID = jamgetuint32_t(buf,JAMLASTREAD_USERID);
s_JamLastRead->LastReadMsg = jamgetuint32_t(buf,JAMLASTREAD_LASTREADMSG);
s_JamLastRead->HighReadMsg = jamgetuint32_t(buf,JAMLASTREAD_HIGHREADMSG);
return 1;
}
int fwritejamlastread(FILE *fp,s_JamLastRead *s_JamLastRead)
{
char buf[SIZE_JAMLASTREAD];
jamputuint32_t(buf,JAMLASTREAD_USERCRC,s_JamLastRead->UserCRC);
jamputuint32_t(buf,JAMLASTREAD_USERID,s_JamLastRead->UserID);
jamputuint32_t(buf,JAMLASTREAD_LASTREADMSG,s_JamLastRead->LastReadMsg);
jamputuint32_t(buf,JAMLASTREAD_HIGHREADMSG,s_JamLastRead->HighReadMsg);
if(fwrite(buf,SIZE_JAMLASTREAD,1,fp) != 1)
return 0;
return 1;
}
int fwritejamsavesubfield(FILE *fp,s_JamSaveSubfield *s_JamSaveSubfield)
{
char buf[SIZE_JAMLASTREAD];
jamputuword(buf,JAMSAVESUBFIELD_LOID, s_JamSaveSubfield->LoID);
jamputuword(buf,JAMSAVESUBFIELD_HIID, s_JamSaveSubfield->HiID);
jamputuint32_t(buf,JAMSAVESUBFIELD_DATLEN, s_JamSaveSubfield->DatLen);
if(fwrite(buf,SIZE_JAMSAVESUBFIELD,1,fp) != 1)
return 0;
return 1;
}
void getjamsubfield(char *buf,s_JamSubfield *Subfield_S)
{
Subfield_S->LoID = jamgetuword(buf,JAMSAVESUBFIELD_LOID);
Subfield_S->HiID = jamgetuword(buf,JAMSAVESUBFIELD_HIID);
Subfield_S->DatLen = jamgetuint32_t(buf,JAMSAVESUBFIELD_DATLEN);
Subfield_S->Buffer = (char *) buf + SIZE_JAMSAVESUBFIELD;
}

86
jamlib/structrw.h Normal file
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/*
structrw - Platform-independent reading and writing of JAM structs
Copyright (C) 1999 Johan Billing
This library 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 2.1 of the License, or (at your option) any later version.
This library 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 this library; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#define JAMBASEHEADER_SIGNATURE 0
#define JAMBASEHEADER_DATECREATED 4
#define JAMBASEHEADER_MODCOUNTER 8
#define JAMBASEHEADER_ACTIVEMSGS 12
#define JAMBASEHEADER_PASSWORDCRC 16
#define JAMBASEHEADER_BASEMSGNUM 20
#define JAMBASEHEADER_RSRVD 24
#define SIZE_JAMBASEHEADER 1024
#define JAMMSGHEADER_SIGNATURE 0
#define JAMMSGHEADER_REVISION 4
#define JAMMSGHEADER_RESERVEDWORD 6
#define JAMMSGHEADER_SUBFIELDLEN 8
#define JAMMSGHEADER_TIMESREAD 12
#define JAMMSGHEADER_MSGIDCRC 16
#define JAMMSGHEADER_REPLYCRC 20
#define JAMMSGHEADER_REPLYTO 24
#define JAMMSGHEADER_REPLY1ST 28
#define JAMMSGHEADER_REPLYNEXT 32
#define JAMMSGHEADER_DATEWRITTEN 36
#define JAMMSGHEADER_DATERECEIVED 40
#define JAMMSGHEADER_DATEPROCESSED 44
#define JAMMSGHEADER_MSGNUM 48
#define JAMMSGHEADER_ATTRIBUTE 52
#define JAMMSGHEADER_ATTRIBUTE2 56
#define JAMMSGHEADER_TXTOFFSET 60
#define JAMMSGHEADER_TXTLEN 64
#define JAMMSGHEADER_PASSWORDCRC 68
#define JAMMSGHEADER_COST 72
#define SIZE_JAMMSGHEADER 76
#define JAMINDEX_USERCRC 0
#define JAMINDEX_HDROFFSET 4
#define SIZE_JAMINDEX 8
#define JAMLASTREAD_USERCRC 0
#define JAMLASTREAD_USERID 4
#define JAMLASTREAD_LASTREADMSG 8
#define JAMLASTREAD_HIGHREADMSG 12
#define SIZE_JAMLASTREAD 16
#define JAMSAVESUBFIELD_LOID 0
#define JAMSAVESUBFIELD_HIID 2
#define JAMSAVESUBFIELD_DATLEN 4
#define SIZE_JAMSAVESUBFIELD 8
int freadjambaseheader(FILE *fp,s_JamBaseHeader *s_JamBaseHeader);
int fwritejambaseheader(FILE *fp,s_JamBaseHeader *s_JamBaseHeader);
int freadjammsgheader(FILE *fp,s_JamMsgHeader *s_JamMsgHeader);
int fwritejammsgheader(FILE *fp,s_JamMsgHeader *s_JamMsgHeader);
int freadjamindex(FILE *fp,s_JamIndex *s_JamIndex);
int fwritejamindex(FILE *fp,s_JamIndex *s_JamIndex);
int freadjamlastread(FILE *fp,s_JamLastRead *s_JamLastRead);
int fwritejamlastread(FILE *fp,s_JamLastRead *s_JamLastRead);
int fwritejamsavesubfield(FILE *fp,s_JamSaveSubfield *s_JamSaveSubfield);
void getjamsubfield(char *buf,s_JamSubfield *Subfield_S);

201
jamlib/subpack.c Normal file
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/*
JAMLIB - A JAM subroutine library
Copyright (C) 1999 Bj<42>rn Stenberg
This library 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 2.1 of the License, or (at your option) any later version.
This library 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 this library; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
Changes made by Johan Billing 2000-04-16:
- Fixed broken JAM_GetSubfield()
- #includes stdlib.h instead of malloc.h and memory.h
Changes made by Johan Billing 2000-09-17:
- Added JAM_GetSubfield_R()
Backported changes from JAMLIB 1.4.7 made by Johan Billing 2003-10-22
- JAM_NewSubPacket() and JAM_PutSubField() would give memory leaks under
low memory conditions. Fixed.
Other changes made by Johan Billing 2003-10-22
- Fixed comparison between signed and unsigned variable in
JAM_DelSubPacket() and JAM_GetSubField()
*/
/***********************************************************************
**
** SUBPACKET.C -- Subfield packet handling
**
** Author: Bj<42>rn Stenberg (bjorn.stenberg@sth.frontec.se)
**
***********************************************************************/
#include <stdio.h>
#include <errno.h>
#include <stdlib.h>
#include <string.h>
#include "jam.h"
/***********************************************************************
**
** JAM_NewSubPacket - Create a new subfield packet
**
***********************************************************************/
s_JamSubPacket* JAM_NewSubPacket( void )
{
s_JamSubPacket* Sub_PS;
/* allocate packet struct */
Sub_PS = (s_JamSubPacket*) malloc( sizeof( s_JamSubPacket ) );
if ( !Sub_PS )
return NULL;
Sub_PS->NumAlloc = 20;
Sub_PS->NumFields = 0;
/* allocate pointer array */
Sub_PS->Fields = (s_JamSubfield**) calloc( Sub_PS->NumAlloc,
sizeof( s_JamSubfield* ) );
if ( !Sub_PS->Fields ) {
free (Sub_PS);
return NULL;
}
return Sub_PS;
}
/***********************************************************************
**
** JAM_DelSubPacket - Free the data associated with a subfield packet
**
***********************************************************************/
int JAM_DelSubPacket( s_JamSubPacket* SubPack_PS )
{
uint32_t i;
if (!SubPack_PS)
return JAM_BAD_PARAM;
for ( i=0; i < SubPack_PS->NumFields; i++ ) {
s_JamSubfield* Field_PS = SubPack_PS->Fields[i];
if ( Field_PS->Buffer )
free( Field_PS->Buffer );
free( Field_PS );
}
free( SubPack_PS->Fields );
free( SubPack_PS );
return 0;
}
/***********************************************************************
**
** JAM_GetSubfield -- Get first/next subfield from a subfield packet
** (not reentrant)
**
***********************************************************************/
s_JamSubfield* JAM_GetSubfield( s_JamSubPacket* SubPack_PS )
{
static s_JamSubPacket* LastPack_PS = NULL;
static uint32_t NextIndex_I = 0;
if ( SubPack_PS ) {
LastPack_PS = SubPack_PS;
NextIndex_I = 0;
}
if ( NextIndex_I < LastPack_PS->NumFields )
return LastPack_PS->Fields[ NextIndex_I++ ];
return NULL;
}
/***********************************************************************
**
** JAM_GetSubfield_R -- Get first/next subfield from a subfield packet
** (reentrant)
**
***********************************************************************/
s_JamSubfield* JAM_GetSubfield_R( s_JamSubPacket* SubPack_PS , uint32_t* Count_PI)
{
if ( *Count_PI < SubPack_PS->NumFields )
return SubPack_PS->Fields[ (*Count_PI)++ ];
return NULL;
}
/***********************************************************************
**
** JAM_PutSubfield -- Add a subfield to a subfield packet
**
***********************************************************************/
int JAM_PutSubfield( s_JamSubPacket* SubPack_PS, s_JamSubfield* Field_PS )
{
s_JamSubfield* NewField_PS;
char* NewBuf_PC;
/* do we have to expand the array? */
if ( SubPack_PS->NumFields == SubPack_PS->NumAlloc ) {
s_JamSubfield** Fields_PPS;
SubPack_PS->NumAlloc *= 2;
Fields_PPS = (s_JamSubfield**) realloc( SubPack_PS->Fields,
SubPack_PS->NumAlloc *
sizeof( s_JamSubfield* ) );
if ( !Fields_PPS )
return JAM_NO_MEMORY;
SubPack_PS->Fields=Fields_PPS;
}
/*
** Copy the passed subfield
*/
/* allocate a new subfield */
NewField_PS = (s_JamSubfield*) malloc( sizeof( s_JamSubfield ) );
if ( !NewField_PS )
return JAM_NO_MEMORY;
/* allocate a new buffer */
if ( Field_PS->DatLen ) {
NewBuf_PC = (char*) malloc( Field_PS->DatLen );
if ( !NewBuf_PC ) {
free (NewField_PS);
return JAM_NO_MEMORY;
}
memcpy( NewBuf_PC, Field_PS->Buffer, Field_PS->DatLen );
}
else
NewBuf_PC = NULL;
/* copy field struct */
NewField_PS->LoID = Field_PS->LoID;
NewField_PS->HiID = Field_PS->HiID;
NewField_PS->DatLen = Field_PS->DatLen;
NewField_PS->Buffer = NewBuf_PC;
/*
** Update subfield packet
*/
SubPack_PS->Fields[ SubPack_PS->NumFields ] = NewField_PS;
SubPack_PS->NumFields++;
return 0;
}