/* log4back.c   (c)Copyright Sequiter Software Inc., 1988-1996.  All rights reserved. */
/* Backs up server .LOG file */

/****************************************************************************
**::  Preprocessor Directives
****************************************************************************/

#include "d4all.h"

#ifndef S4UTILS
   #error - Must compile with S4UTILS defined
#endif

#include "u4trans.h"

#ifndef S4WINDOWS
#ifndef S4UNIX
   #ifdef __TURBOC__
      #pragma hdrstop
   #endif
   extern unsigned _stklen = 10000;
#endif
#endif

#ifdef S4DLL_BUILD
   extern FILE *stdout, *stderr ;
   extern unsigned int messageType ;
   HWND hWndStatus ;  /* status window handle */
#endif

#define FILENAMELEN  12

#define UTIL4BACKLOG   0
#define UTIL4COMPRESS  1
#define UTIL4OVERWRITE 3
#ifndef S4UTIL_CONCURRENCY
   #define UTIL4LOG    2
#else
   #define UTIL4CONFIG 2
#endif

/****************************************************************************
**::  Global scope types and variables
****************************************************************************/

static UTIL4FLAG u4flags[] =
{
   { "Backlog",   0, 1, 1,  1, 1, 0, 0, 0, "{-backlog <backup.log>}\r\n"  },
   { "COMpress",  0, 3, 1,  1, 1, 0, 0, 0, "[-compress {OFF | ON}]\r\n"   },
#ifndef S4UTIL_CONCURRENCY
   { "Log",       0, 1, 1,  1, 1, 0, 0, 0, "{-log <server.log>}\r\n"      },
#else
   { "CONfig",    0, 3, 1, -1, 0, 0, 0, 0, "[-config [<config.dbf>]]\r\n" },
#endif
   { "Overwrite", 0, 1, 1,  1, 1, 0, 0, 0, "[-overwrite {OFF | ON}]\r\n"  },
};

static int u4flagsNum = 4;

static FIELD4INFO openFields[] =
{
   { "CLIENTID",   'N', 11, 0 },
   { "CLIENTDTID", 'N', 11, 0 },
   { "SERVERDTID", 'N', 11, 0 },
   { "PHYSNAME",   'C', LEN4PATH, 0 },
   { "RECWIDTH",   'N',  6, 0 },
   { "NUMFIELDS",  'N',  6, 0 },
   { "NUMRECORDS", 'N', 10, 0 },
   { "DBFTIME",    'N', 11, 0 },
   { "DBFDATE",    'C',  3, 0 },
   { "TEMP",       'L',  1, 0 },
   { "TIME",       'N', 11, 0 },
   { 0,0,0,0 },
};

static TAG4INFO openTags[] =
{
   { "CLID", "STR(CLIENTID,11,0)+STR(SERVERDTID,11,0)", ".NOT.DELETED()", r4unique, 0 },
   { 0,0,0,0,0 },
};

static FIELD4INFO tranFields[] =
{
   { "TRANID", 'N', 11, 0 },
   { 0,0,0,0 },
};

static TAG4INFO tranTags[] =
{
   { "TRANID", "STR(TRANID,11,0)", ".NOT.DELETED()", r4unique, 0 },
   { 0,0,0,0,0 },
};

static FIELD4INFO initFields[] =
{
   { "CLIENTID", 'N', 11, 0 },
   { "NETNAME",  'C', 80, 0 },
   { "CBNAME",   'C', 80, 0 },
   { "TIME",     'N', 11, 0 },
   { 0,0,0,0 },
};

static TAG4INFO initTags[] =
{
   { "CLIENTID", "STR(CLIENTID,11,0)", ".NOT.DELETED()", r4unique, 0 },
   { 0,0,0,0,0 },
};

#ifndef S4WINDOWS
   char *statusStringBlank = "                         ";
   char *statusStringMessg = "Processing log file: ";
   char *statusStringBckSp = "\r";
   char *statusStringFormt = "%3d.%02d%%%%";
   #ifdef S4UNIX
      char statusStringSpace[10] ;
   #else
      char *statusStringSpace = "100.00  ";
   #endif
#else
   extern char *statusStringBlank ;
   extern char *statusStringMessg ;
   extern char *statusStringBckSp ;
   extern char *statusStringFormt ;
   extern char *statusStringSpace ;
#endif

/*::************************************************************************/

/****************************************************************************
**::  Function: getLogFileName
**
*****************************************************************************
**
**    Function: getLogFileName()
**
****************************************************************************/
#ifdef S4UTIL_CONCURRENCY
int S4FUNCTION getLogFileName(CODE4 *c4, UTIL4FLAG *u4flag, char **logFileName, char **serverName, char **protocol, char **processId)
{
   int rc;
   DATA4 *configDbf=0;
   char *outMess[1];

   if (u4flags[UTIL4CONFIG].ptr != 0)
      configDbf = d4open(c4, u4flags[UTIL4CONFIG].ptr[0]);
   else
      configDbf = d4open(c4, "S4SERVER");
   if (configDbf == 0)
      return(-1);
   rc = d4top(configDbf);
   if (rc == 0)
   {
      *logFileName = u4allocFree(c4, f4len(d4field(configDbf, "LOGNAME"))+1);
      if (*logFileName == 0)
         rc = -1;
   }
   if (rc == 0)
   {
      *serverName = u4allocFree(c4, f4len(d4field(configDbf, "SERVERID"))+1);
      if (*serverName == 0)
         rc = -1;
   }
   if (rc == 0)
   {
      *protocol = u4allocFree(c4, f4len(d4field(configDbf, "PROTOCOL"))+1);
      if (*protocol == 0)
         rc = -1;
   }
   if (rc == 0)
   {
      *processId = u4allocFree(c4, f4len(d4field(configDbf, "PROCESSID"))+1);
      if (*processId == 0)
         rc = -1;
   }
   if (rc == 0)
   {
      strcpy(*logFileName, f4str(d4field(configDbf, "LOGNAME")));
      c4trimN(*logFileName, f4len(d4field(configDbf, "LOGNAME"))+1);
      if (**logFileName == 0)
      {
         rc = -1;
         outMess[0] = "Config Dbf error! Logging is disabled.\r\n\r\n";
         util4out(c4, stdout, outMess, 1);
      }
      #ifdef S4UNIX
         u4nameExt(*logFileName, f4len(d4field(configDbf, "LOGNAME"))+1, "log", 0);
      #else
         u4nameExt(*logFileName, f4len(d4field(configDbf, "LOGNAME"))+1, "LOG", 0);
      #endif
      strcpy(*serverName, f4str(d4field(configDbf, "SERVERID")));
      c4trimN(*serverName, f4len(d4field(configDbf, "SERVERID"))+1);
      if (**serverName == 0)
      {
         u4free(*serverName);
         *serverName = 0;
      }
      strcpy(*protocol, f4str(d4field(configDbf, "PROTOCOL")));
      c4trimN(*protocol, f4len(d4field(configDbf, "PROTOCOL"))+1);
      if (**protocol == 0)
      {
         u4free(*protocol);
         *protocol = 0;
      }
      else
         if (**protocol == 'S' || **protocol == 's')
            **protocol -= ('S'-'U');
         else
         {
            rc = -1;
            outMess[0] = "Config Dbf error! Protocol name does not follow expected naming convention.\r\n\r\n";
            util4out(c4, stdout, outMess, 1);
         }
      strcpy(*processId, f4str(d4field(configDbf, "PROCESSID")));
      c4trimN(*processId, f4len(d4field(configDbf, "PROCESSID"))+1);
      if (**processId == 0)
      {
         u4free(*processId);
         *processId = 0;
      }
   }
   rc = rc || d4close(configDbf);
   return(rc);
}
#endif

/****************************************************************************
**::  Function: findIncompleteTran
**
*****************************************************************************
**
**    Function: findIncompleteTran()
**
****************************************************************************/
int S4FUNCTION findIncompleteTran(CODE4 *c4, DATA4 *openDbf, DATA4 *tranDbf, DATA4 *initDbf, unsigned long logFileEof)
{
   int rc, netNameLen, cbNameLen;
   TRAN4 *t4;
   char client[23], *outMess[3], *data;
   TRAN4ENTRY_LEN len;
   short intPart, decPart;

   t4 = &c4->c4trans.trans;
   #ifndef S4WINDOWS
      outMess[0] = statusStringBlank;
      util4out(c4, stderr, outMess, 1);
   #endif
   #ifdef S4DATA_ALIGN
      long templong ;
      short tempshort ;
   #endif

   for (rc = tran4top(t4); rc == 0; rc = tran4skip(t4, TRAN4FORWARDS))
   {
      intPart = (short)((unsigned long)c4->c4trans.trans.pos*50/logFileEof);
      decPart = (short)((unsigned long)c4->c4trans.trans.pos*5000/logFileEof%100);
      #ifndef S4WINDOWS
         sprintf(statusStringSpace, statusStringFormt, intPart, decPart);
         outMess[0] = statusStringBckSp;
         outMess[1] = statusStringMessg;
         outMess[2] = statusStringSpace;
         util4out(c4, stderr, outMess, 3);
      #else
         sendStatusMessage( hWndStatus, intPart ) ;
      #endif

      switch (tran4type(t4))
      {
         case TRAN4BACKEDUP:
         case TRAN4WRITE:
         case TRAN4APPEND:
         case TRAN4PACK:
         case TRAN4ZAP:
         case TRAN4VOID:
            break;

         case TRAN4SHUTDOWN:
            rc = d4pack(openDbf);
            if (rc != 0)
               break;
            if (d4recCount(openDbf) > 0)
            {
               outMess[0] = "\r\n\r\nLog file corrupt! DBF('s) open at shutdown, continuing.\r\n\r\n";
               #ifndef S4WINDOWS
                  outMess[1] = statusStringBlank;
                  util4out(c4, stdout, outMess, 2);
               #else
                  util4out(c4, stdout, outMess, 1) ;
               #endif
               rc = d4zap(openDbf, 1L, d4recCount(openDbf));
               if (rc != 0)
                  break;
            }
            rc = d4pack(tranDbf);
            if (rc != 0)
               break;
            if (d4recCount(tranDbf) > 0)
            {
               outMess[0] = "\r\n\r\nLog file corrupt! Transaction(s) unfinished at shutdown, continuing.\r\n\r\n";
               #ifndef S4WINDOWS
                  outMess[1] = statusStringBlank;
                  util4out(c4, stdout, outMess, 2);
               #else
                  util4out(c4, stdout, outMess, 1) ;
               #endif
               rc = d4zap(tranDbf, 1L, d4recCount(tranDbf));
               if (rc != 0)
                  break;
            }
            rc = d4pack(initDbf);
            if (rc != 0)
               break;
            if (d4recCount(initDbf) > 0)
            {
               outMess[0] = "\r\n\r\nLog file corrupt! User(s) initialized at shutdown, continuing.\r\n\r\n";
               #ifndef S4WINDOWS
                  outMess[1] = statusStringBlank;
                  util4out(c4, stdout, outMess, 2);
               #else
                  util4out(c4, stdout, outMess, 1) ;
               #endif
               rc = d4zap(initDbf, 1L, d4recCount(initDbf));
               if (rc != 0)
                  break;
            }
            if (tran4serverDataId(&c4->c4trans.trans) > TRAN4VERSION_NUM)
            {
               outMess[0] = "\r\n\r\nLog file error! File is a newer version than this utility can handle!\r\n\r\n";
               util4out(c4, stdout, outMess, 1);
               rc = -1;
            }
            break;

         case TRAN4INIT:
            data = (char *)tran4getData(t4, 0L);
            if (data == 0)
            {
               rc = -1;
               break;
            }
            rc = d4appendStart(initDbf, 0);
            if (rc != 0)
               break;
            d4blank(initDbf);
            f4assignLong(d4field(initDbf, "CLIENTID"), tran4clientId(t4));
            f4assignLong(d4field(initDbf, "TIME"), t4->header.time);
            netNameLen = *(short *)data;
            f4assignN(d4field(initDbf, "NETNAME"), data+2, netNameLen);
            cbNameLen = *(short *)(data+2+netNameLen);
            f4assignN(d4field(initDbf, "CBNAME"), data+4+netNameLen, cbNameLen);
            rc = d4append(initDbf);
            if (rc == r4unique)
            {
               outMess[0] = "\r\n\r\nLog file error! User already initialized.\r\n\r\n";
               util4out(c4, stdout, outMess, 1);
            }
            break;

         case TRAN4INIT_UNDO:
            util4rightJ(ltoa(tran4clientId(t4), client, 10), 12);
            rc = d4seek(initDbf, client);
            if (rc != 0)
            {
               if (rc == r4after || rc == r4eof)
               {
                  outMess[0] = "\r\n\r\nLog file error! User uninitialized that is not initialized.\r\n\r\n";
                  util4out(c4, stdout, outMess, 1);
                  rc = -1;
               }
               break;
            }
            d4delete(initDbf);
            rc = d4seek(openDbf, client);
            if (rc == 0)
            {
               outMess[0] = "\r\n\r\nLog file error! User uninitialized with DBF's still open.\r\n\r\n";
               util4out(c4, stdout, outMess, 1);
               rc = -1;
               break;
            }
            if (rc == r4after || rc == r4eof)
               rc = 0;
            break;

         case TRAN4OPEN:
         case TRAN4OPEN_TEMP:
            data = (char *)tran4getData(t4, 0L);
            if (data == 0)
            {
               rc = -1;
               break;
            }
            rc = d4appendStart(openDbf, 0);
            if (rc != 0)
               break;
            d4blank(openDbf);
            f4assignLong(d4field(openDbf, "CLIENTID"), tran4clientId(t4));
            f4assignLong(d4field(openDbf, "CLIENTDTID"), tran4clientDataId(t4));
            f4assignLong(d4field(openDbf, "SERVERDTID"), tran4serverDataId(t4));
            f4assignLong(d4field(openDbf, "TIME"), t4->header.time);
            f4assignN(d4field(openDbf, "PHYSNAME"), data+2, *(short *)data);
            #ifdef S4DATA_ALIGN
               memcpy(&templong, (data+2+*(short *)data), sizeof(long)) ;
               f4assignLong(d4field(openDbf, "RECWIDTH"), templong );
               memcpy(&tempshort, (data+6+*(short *)data), sizeof(short)) ;
               f4assignInt(d4field(openDbf, "NUMFIELDS"), tempshort);
               memcpy(&templong, (data+8+*(short *)data), sizeof(long)) ;
               f4assignLong(d4field(openDbf, "NUMRECORDS"), templong);
               memcpy(&templong, (data+12+*(short *)data), sizeof(long)) ;
               f4assignLong(d4field(openDbf, "DBFTIME"), templong);
            #else
               f4assignLong(d4field(openDbf, "RECWIDTH"), *(long *)(data+2+(*(short *)data)));
               f4assignInt(d4field(openDbf, "NUMFIELDS"), *(short *)(data+6+(*(short *)data)));
               f4assignLong(d4field(openDbf, "NUMRECORDS"), *(long *)(data+8+(*(short *)data)));
               f4assignLong(d4field(openDbf, "DBFTIME"), *(long *)(data+12+(*(short *)data)));
            #endif
            f4assignN(d4field(openDbf, "DBFDATE"), data+16+(*(short *)data), 3);
            if (tran4type(t4) == TRAN4OPEN_TEMP)
               f4assignChar(d4field(openDbf, "TEMP"), 'Y');
            rc = d4append(openDbf);
            if (rc == r4unique)
            {
               outMess[0] = "\r\n\r\nLog file error! DBF identifier already used.\r\n\r\n";
               util4out(c4, stdout, outMess, 1);
            }
            break;

         case TRAN4CLOSE:
            util4rightJ(ltoa(tran4clientId(t4), client, 10), 12);
            util4rightJ(ltoa(tran4serverDataId(t4), client+11, 10), 12);
            rc = d4seek(openDbf, client);
            if (rc != 0)
            {
               if (rc == r4after || rc == r4eof)
               {
                  outMess[0] = "\r\n\r\nLog file error! DBF closed that is not open.\r\n\r\n";
                  util4out(c4, stdout, outMess, 1);
                  rc = -1;
               }
               break;
            }
            d4delete(openDbf);
            break;

         case TRAN4START:
            util4rightJ(ltoa(tran4clientId(t4), client, 10), 12);
            rc = d4seek(initDbf, client);
            if (rc != 0)
            {
               if (rc == r4after || rc == r4eof)
               {
                  outMess[0] = "\r\n\r\nLog file error! Transaction started by user that is not initialized.\r\n\r\n";
                  util4out(c4, stdout, outMess, 1);
                  rc = -1;
               }
               break;
            }
            rc = d4appendStart(tranDbf, 0);
            if (rc != 0)
               break;
            d4blank(tranDbf);
            f4assignLong(d4field(tranDbf, "TRANID"), tran4id(t4));
            rc = d4append(tranDbf);
            if (rc == r4unique)
            {
               outMess[0] = "\r\n\r\nLog file error! Transaction ID already started.\r\n\r\n";
               util4out(c4, stdout, outMess, 1);
            }
            break;

         case TRAN4COMPLETE:
         case TRAN4ROLLBACK:
            util4rightJ(ltoa(tran4id(t4), client, 10), 12);
            rc = d4seek(tranDbf, client);
            if (rc != 0)
            {
               if (rc == r4after || rc == r4eof)
               {
                  if (tran4type(t4) == TRAN4COMPLETE)
                     outMess[0] = "\r\n\r\nLog file error! Transaction completed that was not started.\r\n\r\n";
                  else
                     outMess[0] = "\r\n\r\nLog file error! Transaction rolledback that was not started.\r\n\r\n";
                  util4out(c4, stdout, outMess, 1);
                  rc = -1;
               }
               break;
            }
            d4delete(tranDbf);
            break;

         default:
            outMess[0] = "\r\n\r\nLog file error! Unknown log entry type.\r\n\r\n";
            util4out(c4, stdout, outMess, 1);
            rc = -1;
      }
      if ( rc != 0 )
         break;
      if ((unsigned long)t4->pos+sizeof(LOG4HEADER)+sizeof(TRAN4ENTRY_LEN) > logFileEof)
      {
         rc = r4eof;
         break;
      }
      rc = file4readAll(&c4->transFile.file, t4->pos+sizeof(LOG4HEADER), &len, sizeof(TRAN4ENTRY_LEN));
      if (rc == 0 && (unsigned long)t4->pos+sizeof(LOG4HEADER)+len > logFileEof)
      {
         rc = r4eof;
         break;
      }
      if (rc != 0)
         break;
   }
   if (rc == r4eof)
      rc = 0;
   return(rc);
}

/****************************************************************************
**::  Function: compressTran
**
*****************************************************************************
**
**    Function: compressTran()
**
****************************************************************************/
short S4FUNCTION compressTran(CODE4 *c4, DATA4 *openDbf, DATA4 *tranDbf, DATA4 *initDbf, unsigned long logFileEof, CODE4 *outTrans, CODE4 *tempTrans, int compress)
{
   short rc, netLen, cbLen, physLen, numFields, intPart, decPart;
   int type=-1;
   TRAN4 *t4, *outT4, *tempT4;
   char client[23], cbName[81], netName[81], *physName, *outMess[3];
   long tempLong;
   TRAN4ENTRY_LEN len;

   t4 = &c4->c4trans.trans;
   outT4 = &outTrans->c4trans.trans;
   if (compress)
      tempT4 = &tempTrans->c4trans.trans;
   rc = tran4set(outT4, r4off, -1, 0, TRAN4BACKEDUP, 0, 0L, 0L);
   if (rc < 0)
      return(rc);
   rc = tran4lowAppend(outT4, 0);
   if (rc < 0)
      return(rc);
   if (compress != 0)
   {
      rc = tran4set(tempT4, r4off, -1, 0, TRAN4SHUTDOWN, 0, 0L, TRAN4VERSION_NUM);
      if (rc < 0)
         return(rc);
      tempT4->header.time = 0L;
      rc = tran4lowAppend(tempT4, 0);
      if (rc < 0)
         return(rc);

      for (rc = d4top(initDbf); rc == 0; rc = d4skip(initDbf, 1L))
      {
         strcpy(netName, f4str(d4field(initDbf, "NETNAME")));
         c4trimN(netName, 81);
         netLen = strlen(netName);
         strcpy(cbName, f4str(d4field(initDbf, "CBNAME")));
         c4trimN(cbName, 81);
         cbLen = strlen(cbName);
         rc = tran4set(tempT4, r4off, -1, f4long(d4field(initDbf, "CLIENTID")), TRAN4INIT, cbLen+netLen+sizeof(cbLen)+sizeof(netLen), 0L, 0L);
         if (rc < 0)
            break;
         tempT4->header.time = f4long(d4field(initDbf, "TIME"));
         rc = tran4putData(tempT4, (void *)&netLen, sizeof(netLen));
         if (rc < 0)
            break;
         if (netLen != 0)
         {
            rc = tran4putData(tempT4, (void *)netName, netLen);
            if (rc < 0)
               break;
         }
         rc = tran4putData(tempT4, (void *)&cbLen, sizeof(cbLen));
         if (rc < 0)
            break;
         if (cbLen != 0)
         {
            rc = tran4putData(tempT4, (void *)cbName, cbLen);
            if (rc < 0)
               break;
         }
         rc = tran4lowAppend(tempT4, 0);
         if (rc < 0)
            break;
      }
      if (rc != r4eof)
         return(rc);

      for (rc = d4top(openDbf); rc == 0; rc = d4skip(openDbf, 1L))
      {
         physName = f4str(d4field(openDbf, "PHYSNAME"));
         c4trimN(physName, LEN4PATH+1);
         physLen = strlen(physName);
         if (f4true(d4field(openDbf, "TEMP")))
            type = TRAN4OPEN_TEMP;
         else
            type = TRAN4OPEN;
         rc = tran4set(tempT4, r4off, -1, f4long(d4field(openDbf, "CLIENTID")), type, physLen+19, f4long(d4field(openDbf, "CLIENTDTID")), f4long(d4field(openDbf, "SERVERDTID")));
         if (rc < 0)
            break;
         tempT4->header.time = f4long(d4field(openDbf, "TIME"));
         rc = tran4putData(tempT4, (void *)&physLen, sizeof(physLen));
         if (rc < 0)
            break;
         rc = tran4putData(tempT4, (void *)physName, physLen);
         if (rc < 0)
            break;
         tempLong = f4long(d4field(openDbf, "RECWIDTH"));
         rc = tran4putData(tempT4, (void *)&tempLong, sizeof(tempLong));
         if (rc < 0)
            break;
         numFields = (short)f4long(d4field(openDbf, "NUMFIELDS"));
         rc = tran4putData(tempT4, (void *)&numFields, sizeof(numFields));
         if (rc < 0)
            break;
         tempLong = f4long(d4field(openDbf, "NUMRECORDS"));
         rc = tran4putData(tempT4, (void *)&tempLong, sizeof(tempLong));
         if (rc < 0)
            break;
         tempLong = f4long(d4field(openDbf, "DBFTIME"));
         rc = tran4putData(tempT4, (void *)&tempLong, sizeof(tempLong));
         if (rc < 0)
            break;
         rc = tran4putData(tempT4, f4ptr(d4field(openDbf, "DBFDATE")), 3);
         if (rc < 0)
            break;
         rc = tran4lowAppend(tempT4, 0);
         if (rc < 0)
            break;
      }
      if (rc != r4eof)
         return(rc);
   }

   for (rc = tran4top(t4); rc == 0; rc = tran4skip(t4, TRAN4FORWARDS))
   {
      intPart = (short)((unsigned long)c4->c4trans.trans.pos*50/logFileEof+50);
      decPart = (short)((unsigned long)c4->c4trans.trans.pos*5000/logFileEof%100);
      #ifndef S4WINDOWS
         sprintf(statusStringSpace, statusStringFormt, intPart, decPart);
         outMess[0] = statusStringBckSp;
         outMess[1] = statusStringMessg;
         outMess[2] = statusStringSpace;
         util4out(c4, stderr, outMess, 3);
      #else
         sendStatusMessage( hWndStatus, intPart ) ;
      #endif

      type = tran4type(t4);
      switch (type)
      {
         case TRAN4SHUTDOWN:
         case TRAN4BACKEDUP:
         case TRAN4INIT:
         case TRAN4INIT_UNDO:
         case TRAN4OPEN:
         case TRAN4OPEN_TEMP:
         case TRAN4CLOSE:
         case TRAN4PACK:
         case TRAN4ZAP:
         case TRAN4VOID:
            rc = tran4fileAppend(&outTrans->transFile, &t4->header, t4->c4trans->c4->tranData);
            break;

         case TRAN4START:
         case TRAN4COMPLETE:
         case TRAN4ROLLBACK:
         case TRAN4WRITE:
         case TRAN4APPEND:
            util4rightJ(ltoa(tran4id(t4), client, 10), 12);
            rc = d4seek(tranDbf, client);
            if (rc == 0)
            {
               if (compress)
                  rc = tran4fileAppend(&tempTrans->transFile, &t4->header, t4->c4trans->c4->tranData);
            }
            else
               if (rc == r4after || rc == r4eof)
                  rc = tran4fileAppend(&outTrans->transFile, &t4->header, t4->c4trans->c4->tranData);
            break;

         default:
            outMess[0] = "\r\n\r\nLog file error! Unknown log entry type.\r\n\r\n";
            util4out(c4, stdout, outMess, 1);
            rc = -1;
      }
      if (rc != 0)
         break;
      if ((unsigned long)t4->pos+sizeof(LOG4HEADER)+sizeof(TRAN4ENTRY_LEN) > logFileEof)
      {
         rc = r4eof;
         break;
      }
      rc = file4readAll(&c4->transFile.file, t4->pos+sizeof(LOG4HEADER), &len, sizeof(TRAN4ENTRY_LEN));
      if (rc == 0 && (unsigned long)t4->pos+sizeof(LOG4HEADER)+len > logFileEof)
      {
         rc = r4eof;
         break;
      }
      if (rc != 0)
         break;
   }
   if (rc != r4eof)
      return(rc);
   #ifndef S4WINDOWS
      outMess[0] = statusStringBckSp;
      outMess[1] = statusStringMessg;
      sprintf(statusStringSpace, statusStringFormt, 100, 0);
      outMess[2] = statusStringSpace;
      util4out(c4, stderr, outMess, 3);
      outMess[0] = "\r\n";
      util4out(c4, stderr, outMess, 1);
      util4out(c4, stdout, outMess, 1);
   #endif
   for (rc = d4top(openDbf); rc == 0; rc = d4skip(openDbf, 1L))
   {
      rc = tran4set(outT4, r4off, -1, f4long(d4field(openDbf, "CLIENTID")), TRAN4CLOSE, 0, f4long(d4field(openDbf, "CLIENTDTID")), f4long(d4field(openDbf, "SERVERDTID")));
      if (rc < 0)
         break;
      outT4->header.time = 0L;
      rc = tran4lowAppend(outT4, 0);
      if (rc < 0)
         break;
   }
   if (rc != r4eof)
      return(rc);

   for (rc = d4top(initDbf); rc == 0; rc = d4skip(initDbf, 1L))
   {
      rc = tran4set(outT4, r4off, -1, f4long(d4field(initDbf, "CLIENTID")), TRAN4INIT_UNDO, 0, 0L, 0L);
      if (rc < 0)
         break;
      outT4->header.time = 0L;
      rc = tran4lowAppend(outT4, 0);
      if (rc < 0)
         break;
   }
   if (rc != r4eof)
      return(rc);
   rc = 0;

   if (type != TRAN4SHUTDOWN)
   {
      rc = tran4set(outT4, r4off, -1, 0, TRAN4SHUTDOWN, 0, 0L, TRAN4VERSION_NUM);
      if (rc < 0)
         return(rc);
      outT4->header.time = 0L;
      rc = tran4lowAppend(outT4, 0);
   }
   else
   {
      if (compress)
      {
         rc = tran4set(tempT4, r4off, -1, 0, TRAN4SHUTDOWN, 0, 0L, TRAN4VERSION_NUM);
         if (rc < 0)
            return(rc);
         tempT4->header.time = 0L;
         rc = tran4lowAppend(tempT4, 0);
      }
   }
   return(rc);
}

/****************************************************************************
**::  Function: backupLogFile
**
*****************************************************************************
**
**    Function: backupLogFile()
**
****************************************************************************/
int S4FUNCTION backupLogFile(CODE4 *c4, CODE4 *outTrans, CODE4 *tempTrans, unsigned long logFileEof, int compress)
{
   DATA4 *openDbf, *tranDbf, *initDbf;
   int rc=0;

   openDbf = d4createTemp(c4, openFields, openTags);
   tranDbf = d4createTemp(c4, tranFields, tranTags);
   initDbf = d4createTemp(c4, initFields, initTags);

   if ((openDbf == 0) || (tranDbf == 0) || (initDbf == 0))
      rc = -1;
   if (rc == 0)
   {
      d4tagSelect(openDbf, d4tag(openDbf, "CLID"));
      d4tagSelect(tranDbf, d4tag(tranDbf, "TRANID"));
      d4tagSelect(initDbf, d4tag(initDbf, "CLIENTID"));
      rc = findIncompleteTran(c4, openDbf, tranDbf, initDbf, logFileEof);
   }
   if (rc == 0)
      rc = compressTran(c4, openDbf, tranDbf, initDbf, logFileEof, outTrans, tempTrans, compress);
   if (initDbf)
      rc = rc || d4close(initDbf);
   if (tranDbf)
      rc = rc || d4close(tranDbf);
   if (openDbf)
      rc = rc || d4close(openDbf);
   return(rc);
}

/****************************************************************************
**::  Function: copyResidualLogFile
**
*****************************************************************************
**
**    Function: copyResidualLogFile()
**
****************************************************************************/
short S4FUNCTION copyResidualLogFile(CODE4 *c4, CODE4 *tempTrans, unsigned long logFileEof, unsigned long logFileEofFull)
{
   unsigned long diff;
   unsigned short rc, bufSize;
   char *buffer;

   diff = logFileEofFull - logFileEof;
   if (diff <= 0)
      return((short)diff);
   file4refresh(&c4->transFile.file);
   file4refresh(&tempTrans->transFile.file);
   bufSize = (unsigned short)(diff > 65000 ? 65000 : diff);
   buffer = (char *)u4allocFree(c4, bufSize);
   if (buffer == 0)
      return(-1);
   for (; diff>0; diff -= rc, logFileEof+= rc )
   {
      rc = file4read(&c4->transFile.file, logFileEof, buffer, bufSize);
      if (rc <= 0)
      {
         u4free(buffer);
         return(-1);
      }
      if (file4write(&tempTrans->transFile.file, file4len(&tempTrans->transFile.file), buffer, rc) < 0)
      {
         u4free(buffer);
         return(-1);
      }
   }
   u4free(buffer);
   return(0);
}

/****************************************************************************
**::  Function: main
**
*****************************************************************************
**
**    Function: main()
**
****************************************************************************/
#ifdef S4DLL_BUILD
int S4FUNCTION  mainLog4Back(int argc, char *argv[], int hWnd )
#else
int main( int argc, char *argv[] )
#endif
{
   CODE4 c4, outTrans, tempTrans;
   char *logFileName=0, *tempFileName=0 ;
   unsigned long logFileEof, logFileEofFull;
   long len;
   int rc=0, serverUp=0, i, j=0, compress, overwrite;
   char *outMess[5], *outFileName;
   #ifdef S4UTIL_CONCURRENCY
      char *serverName=0, *protocol=0, *processId=0;
   #endif

   #ifdef S4WINDOWS
      hWndStatus = hWnd ;
      messageType = MB_ICONSTOP ;
   #endif

   #ifndef S4DLL_BUILD
   #ifdef _WINDOWS
      _wabout("LOG4BACK.EXE\r\n(c)Copyright Sequiter Software Inc., 1988-1996");
   #endif
   #endif

   #ifdef S4UNIX
      strcpy(statusStringSpace, "100.00  ");
   #endif
   code4init(&c4);
   c4.lockAttempts = WAIT4EVER;
   c4.autoOpen = 0;
   #ifndef S4WINDOWS
      outMess[0] = "\r\n";
      util4out(&c4, stderr, outMess, 1);
   #endif
   if (argc < 2)
      rc = -1;
   if (rc == 0)
      rc = util4parseCommandLine(&c4, u4flags, u4flagsNum, argv, argc);
   if (rc == 0 && u4flags[UTIL4BACKLOG].found == 0)
   {
      outMess[0] = "Command line error! Must specify -backlog switch.\r\n\r\n";
      util4out(&c4, stdout, outMess, 1);
      rc = -1;
   }
   #ifndef S4UTIL_CONCURRENCY
      if (rc == 0 && u4flags[UTIL4LOG].found == 0)
      {
         outMess[0] = "Command line error! Must specify -log switch.\r\n\r\n";
         util4out(&c4, stdout, outMess, 1);
         rc = -1;
      }
   #endif

   compress = util4checkOnOffCommandLine(&c4, u4flags, UTIL4COMPRESS, 0);
   if (compress == -1)
      rc = -1;
   overwrite = util4checkOnOffCommandLine(&c4, u4flags, UTIL4OVERWRITE, 0);
   if (overwrite == -1)
      rc = -1;
   if (rc != 0)
   {
      util4printCommandLine(&c4, u4flags, u4flagsNum, argv[0]);
      util4flagsFree(u4flags, u4flagsNum);
      code4initUndo(&c4);
      #ifdef S4WINDOWS
         sendCloseMessage( hWndStatus ) ;
      #endif
      return(rc);
   }

   outFileName = (char *)u4allocFree(&c4, strlen(u4flags[UTIL4BACKLOG].ptr[0])+5);
   if (outFileName == 0)
      rc = -1;
   else
   {
      strcpy(outFileName, u4flags[UTIL4BACKLOG].ptr[0]);
      #ifdef S4UNIX
         u4nameExt(outFileName, strlen(u4flags[UTIL4BACKLOG].ptr[0])+5, "log", 0);
      #else
         u4nameExt(outFileName, strlen(u4flags[UTIL4BACKLOG].ptr[0])+5, "LOG", 0);
      #endif
   }
   if (rc == 0)
   {
      rc = access(outFileName, 0);
      if (rc == 0)
         if (overwrite)
         {
            rc = remove(outFileName);
            if (rc != 0)
            {
               outMess[0] = "Access error! Can not overwrite -backlog file ";
               outMess[1] = outFileName;
               outMess[2] = "\r\n\r\n";
               util4out(&c4, stdout, outMess, 3);
            }
         }
         else
         {
            #ifndef S4WINDOWS
               outMess[0] = "Command line error! -backlog file ";
            #else
               outMess[0] = "Access error! Backup log file ";
            #endif
            outMess[1] = outFileName;
            outMess[2] = " already exists.\r\n\r\n";
            util4out(&c4, stdout, outMess, 3);
            rc = -1;
         }
      else
         rc = 0;
   }
   if (rc != 0)
   {
      outMess[0] = "Error! Utility did not successfully finish!\r\n";
      util4out(&c4, stdout, outMess, 1);
      if (outFileName)
         u4free(outFileName);
      util4flagsFree(u4flags, u4flagsNum);
      code4initUndo(&c4);
      #ifdef S4WINDOWS
         sendCloseMessage( hWndStatus ) ;
      #endif
      return(rc);
   }

   #ifdef S4UTIL_CONCURRENCY
      rc = getLogFileName(&c4, u4flags, &logFileName, &serverName, &protocol, &processId);
   #else
      logFileName = u4flags[UTIL4LOG].ptr[0] ;
   #endif
   if (rc == 0)
   {
      rc = code4logOpen( &c4, logFileName, "" ) ;
      code4tranStatusSet(&c4, r4off);
   }
   if (rc == 0 && sizeof(LOG4HEADER)+sizeof(TRAN4ENTRY_LEN) > file4len(&c4.transFile.file))
   {
      rc = file4lenSet(&c4.transFile.file, 0L);
      outMess[0] = "Log file error! Log file is empty.\r\n\r\n";
      util4out(&c4, stdout, outMess, 1);
      rc = -1;
   }

   code4init(&outTrans);
   outTrans.errOpen = 0;
   outTrans.safety = 0;
   if (rc == 0)
   {
      rc = code4logOpen( &outTrans, outFileName, "" ) ;
      if( rc == r4no_open )
      {
         rc = code4logCreate( &outTrans, outFileName, "" ) ;
         error4set( &outTrans, 0 ) ;
      }
      code4tranStatusSet(&outTrans, r4off);
   }
   if (rc == 0)
   {
      len = file4len(&outTrans.transFile.file);
      if (len < 0)
         rc = -1;
      if (rc == 0)
         rc = file4lenSet(&outTrans.transFile.file, 0L);
   }

   if (compress)
   {
      code4init(&tempTrans);
      tempTrans.errOpen = 0;
      tempTrans.safety = 0;
      if (rc == 0)
      {
         i = strlen(logFileName);
         while (--i>=0 && logFileName[i] != '.' && logFileName[i] != '\\');
         if (i == -1 || logFileName[i] == '\\')
            i = strlen(logFileName);
         tempFileName = (char *)u4allocFree(&c4, i+5);
         if (tempFileName != 0)
         {
            strcpy(tempFileName, logFileName);
            do
               u4nameExt(tempFileName, i+5, ltoa(j++, "   ", 10), 1);
            while (access(tempFileName, 0) == 0 && j < 1000);
            if (j == 1000)
               rc = -1;
            if (rc == 0)
            {
               rc = code4logCreate( &tempTrans, tempFileName, "" ) ;
               code4tranStatusSet(&tempTrans, r4off);
            }
            if (rc == 0)
               rc = file4lenSet(&tempTrans.transFile.file, 0L);
         }
      }
   }

   c4.lockAttempts = 1;
   if (rc == 0)
   {
      rc = code4tranLockTransactions(&c4.c4trans, TRAN4LOCK_FIX);
      if (rc == r4locked)
      {
         outMess[0] = "Concurrency error! Fix utility is running!\r\n\r\n";
         util4out(&c4, stdout, outMess, 1);
      }
   }
   if (rc == 0)
   {
      rc = code4tranLockTransactions(&c4.c4trans, TRAN4LOCK_BACKUP);
      if (rc == r4locked)
      {
         outMess[0] = "Concurrency error! Another copy of this utility is running!\r\n\r\n";
         util4out(&c4, stdout, outMess, 1);
      }
   }
   if (rc == 0)
   {
      rc = code4tranLockTransactions(&outTrans.c4trans, TRAN4LOCK_RESTORE);
      if (rc == r4locked)
      {
         outMess[0] = "Concurrency error! Restore utility is using -backlog file ";
         outMess[1] = outFileName;
         outMess[2] = "!\r\n\r\n";
         util4out(&c4, stdout, outMess, 3);
      }
   }
   if (rc == 0)
   {
      rc = code4tranLockTransactions(&outTrans.c4trans, TRAN4LOCK_BACKUP);
      if (rc == r4locked)
      {
         outMess[0] = "Concurrency error! Another copy of this utility is using -backlog file ";
         outMess[1] = outFileName;
         outMess[2] = "!\r\n\r\n";
         util4out(&c4, stdout, outMess, 3);
      }
   }
   if (rc == 0)
   {
      /* query server for eof */
      rc = code4tranLockTransactions(&c4.c4trans, TRAN4LOCK_SERVER);
      if (rc == r4locked)
      {
         #ifdef S4UTIL_CONCURRENCY
            rc = code4connect(&c4, serverName, processId, 0, 0, protocol);
            if (rc == 0)
               rc = tran4serverEof(&c4.c4trans.trans, &logFileEof);
            else
               c4.errorCode = 0;
            if (rc == r4noServer)
            {
               outMess[0] = "Concurrency error! Unknown application has locked the server on log file.\r\n\r\n";
               util4out(&c4, stdout, outMess, 1);
            }
            else
               if (rc == 0)
                  serverUp = 1;
         #else
            outMess[0] = "Concurrency error! The server is running!\r\n\r\n";
            util4out(&c4, stdout, outMess, 1);
         #endif
      }
      else
         if (rc == 0)
            logFileEof = file4len(&c4.transFile.file);
   }

   c4.lockAttempts = WAIT4EVER;
   if (rc == 0)
   {
      rc = tran4top(&c4.c4trans.trans);
      if (rc == 0 && (tran4type(&c4.c4trans.trans) != TRAN4SHUTDOWN || tran4serverDataId(&c4.c4trans.trans) > TRAN4VERSION_NUM))
      {
         outMess[0] = "Log file error! File is either a backup file or a newer version than this utility can handle!\r\n\r\n";
         util4out(&c4, stdout, outMess, 1);
         rc = -1;
      }
   }

   /* backup transaction file to eof */
   if (rc == 0)
      rc = backupLogFile(&c4, &outTrans, &tempTrans, logFileEof, compress);

   /* query server for eof and halt server */
   #ifdef S4UTIL_CONCURRENCY
      if (rc == 0 && serverUp && compress)
      {
         rc = tran4serverEofHalt(&c4.c4trans.trans, &logFileEofFull);
         if (rc == 0)
         {
            rc = code4tranLockTransactions(&c4.c4trans, TRAN4LOCK_SERVER);
            if (rc == r4locked)
            {
               outMess[0] = "Concurrency error! Unknown application has locked the server on log file.\r\n\r\n";
               util4out(&c4, stdout, outMess, 1);
            }
         }
      }
      else
   #endif
      logFileEofFull = logFileEof;

   /* copy residual */
   if (rc == 0 && compress)
      rc = copyResidualLogFile(&c4, &tempTrans, logFileEof, logFileEofFull);

   /* overwite old */
   if (compress)
      code4transInitUndo(&tempTrans.c4trans);
   code4transInitUndo(&outTrans.c4trans);
   code4transInitUndo(&c4.c4trans);
   if (rc != 0)
   {
      remove(outFileName);
      if (compress)
         remove(tempFileName);
   }

   if (rc == 0 && compress)
   {
      rc = remove(logFileName);
      if (rc != 0)
      {
         outMess[0] = "!!!ERROR!!! Original log file not removed!  To complete backup rename:\r\n\r\n";
         outMess[1] = tempFileName;
         outMess[2] = "\r\nover top of:\r\n";
         outMess[3] = logFileName;
         outMess[4] = "\r\n\r\n";
         util4out(&c4, stdout, outMess, 5);
      }
      else
      {
         rename(tempFileName, logFileName);
         if (rc != 0)
         {
            outMess[0] = "!!!ERROR!!! New log file not renamed!  To complete backup rename:\r\n";
            outMess[1] = tempFileName;
            outMess[2] = "\r\nto:\r\n";
            outMess[3] = logFileName;
            outMess[4] = "\r\n\r\n";
            util4out(&c4, stdout, outMess, 5);
         }
      }
   }
   if (rc != 0)
   {
      outMess[0] = "Error! Utility did not successfully finish!\r\n";
      util4out(&c4, stdout, outMess, 1);
   }
   else
   {
      #ifdef S4WINDOWS
         messageType = MB_ICONEXCLAMATION ;
         sendStatusMessage( hWndStatus, 100 ) ;
      #endif
      outMess[0] = "Utility successfully finished!\r\n";
      util4out(&c4, stdout, outMess, 1);
   }
   if (compress)
   {
      if (tempFileName)
         u4free(tempFileName);
      code4initUndo(&tempTrans);
   }
   code4initUndo(&outTrans);
   if (outFileName)
      u4free(outFileName);
   #ifdef S4UTIL_CONCURRENCY
      if (processId)
         u4free(processId);
      if (protocol)
         u4free(protocol);
      if (serverName)
         u4free(serverName);
      if (logFileName)
         u4free(logFileName);
   #endif
   util4flagsFree(u4flags, u4flagsNum);
   code4initUndo(&c4);
   #ifdef S4WINDOWS
      sendCloseMessage( hWndStatus ) ;
   #endif
   return(rc);
}