/
ipp_dev.c
1159 lines (911 loc) · 23.6 KB
/
ipp_dev.c
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/*
* ipp_dev.c (c) Chris Young 2013
* Somewhat based on lpr.device by Olaf Barthel
* and utilising a modified ipr by ShineSoft Systems
*/
#include <intuition/intuition.h>
#include <exec/memory.h>
#include <exec/devices.h>
#include <exec/resident.h>
#include <exec/errors.h>
#include <exec/io.h>
#include <dos/dosextens.h>
#include <dos/dostags.h>
#include <dos/rdargs.h>
#include <dos/stdio.h>
#include <devices/parallel.h>
#include <devices/newstyle.h>
#ifndef __amigaos4__
#include <clib/exec_protos.h>
#include <clib/dos_protos.h>
#include <clib/intuition_protos.h>
#endif
#include <clib/alib_protos.h>
#ifdef __SASC
#include <pragmas/exec_sysbase_pragmas.h>
#include <pragmas/dos_pragmas.h>
#include <pragmas/intuition_pragmas.h>
#include <pragmas/locale_pragmas.h>
#else
#include <proto/exec.h>
#include <proto/dos.h>
#include <proto/intuition.h>
#include <proto/utility.h>
#endif
#define USE_BUILTIN_MATH
#include <string.h>
#include <stdarg.h>
#include <stdio.h>
#ifdef __amigaos4__
struct Library *NewlibBase;
struct Interface *INewlib;
//struct DOSIFace *IDOS;
//struct ExecIFace *IExec;
#endif
#ifndef FFlush
#define FFlush Flush
#endif
#define memcpy(a,b,c) CopyMem(b,a,c)
int ipp_print_file(const char *destUrl, const char *filename, const char *tmplpath);
/****************************************************************************/
#include "ipp.device_rev.h"
/****************************************************************************/
typedef unsigned char * KEY;
typedef long SWITCH;
typedef long * NUMBER;
/****************************************************************************/
#define FLAG_IS_SET(v,f) (((v) & (f)) != 0)
#define FLAG_IS_CLEAR(v,f) (((v) & (f)) == 0)
#define SET_FLAG(v,f) v |= (f)
#define CLEAR_FLAG(v,f) v &= ~(f)
#define OK (0)
#define NOT !
#define NUM_ENTRIES(t) (sizeof(t) / sizeof(t[0]))
#define MAX_FILENAME_LEN 256
/****************************************************************************/
#ifndef ZERO
#define ZERO ((BPTR)NULL)
#endif
/****************************************************************************/
/*
APTR ASM AsmAllocPooled(REG(a0) APTR poolHeader,REG(d0) ULONG memSize,REG(a6) struct Library *);
APTR ASM AsmCreatePool(REG(d0) ULONG memFlags,REG(d1) ULONG puddleSize,REG(d2) ULONG threshSize,REG(a6) struct Library *);
VOID ASM AsmDeletePool(REG(a0) APTR poolHeader,REG(a6) struct Library *);
*/
#define AsmAllocPooled(a,b,c) AllocPooled(a,b)
#define AsmCreatePool(a,b,c,d) CreatePool(a,b,c)
#define AsmDeletePool(a,b) DeletePool(a)
/****************************************************************************/
struct DeviceUnit
{
struct Unit du_Unit;
LONG du_Index;
struct Process * du_Process;
};
/****************************************************************************/
struct DeviceBase
{
struct Library db_Library;
BPTR db_SegList;
struct SignalSemaphore db_Lock;
UWORD db_Pad;
struct Library * db_SysBase;
struct Library * db_DOSBase;
struct Library * db_IntuitionBase;
struct Library * db_UtilityBase;
struct DeviceUnit db_Unit[10];
LONG db_Counter;
#ifdef __amigaos4__
struct ExecIFace * db_IExec;
struct DOSIFace * db_IDOS;
struct IntuitionIFace * db_IIntuition;
struct UtilityIFace * db_IUtility;
#endif
};
/****************************************************************************/
#define SysBase db->db_SysBase
#define DOSBase db->db_DOSBase
#define IntuitionBase db->db_IntuitionBase
#define UtilityBase db->db_UtilityBase
#define IExec db->db_IExec
#define IDOS db->db_IDOS
#define IIntuition db->db_IIntuition
#define IUtility db->db_IUtility
/****************************************************************************/
#define SIGF_Wakeup SIGF_SINGLE
/****************************************************************************/
#define CMD_OpenUnit (CMD_NONSTD+400)
#define CMD_CloseUnit (CMD_NONSTD+401)
/****************************************************************************/
LONG ReturnError(VOID) { return(-1); }
/****************************************************************************/
STATIC VOID
SendCmd(
struct DeviceBase * db,
struct DeviceUnit * du,
UWORD command)
{
struct IORequest ior;
struct MsgPort port;
memset(&port,0,sizeof(port));
port.mp_Flags = PA_SIGNAL;
port.mp_SigBit = SIGB_SINGLE;
port.mp_SigTask = FindTask(NULL);
NewList(&port.mp_MsgList);
memset(&ior,0,sizeof(ior));
ior.io_Message.mn_ReplyPort = &port;
ior.io_Message.mn_Length = sizeof(ior);
ior.io_Unit = (struct Unit *)du;
ior.io_Device = (struct Device *)db;
ior.io_Command = command;
SetSignal(0,SIGF_SINGLE);
PutMsg(&ior.io_Unit->unit_MsgPort,(struct Message *)&ior);
WaitPort(&port);
}
/****************************************************************************/
#ifdef __amigaos4__
STATIC VOID
DevBeginIO(
struct Interface * Self,
struct IOStdReq * ior)
{
struct DeviceBase *db = (struct DeviceBase *) Self->Data.LibBase;
#else
STATIC VOID ASM
DevBeginIO(
REG(a1, struct IOStdReq * ior),
REG(a6, struct DeviceBase * db))
{
#endif
struct DeviceUnit * du = (struct DeviceUnit *)ior->io_Unit;
ior->io_Message.mn_Node.ln_Type = NT_MESSAGE;
ior->io_Error = OK;
switch(ior->io_Command)
{
case CMD_READ:
ior->io_Actual = 0;
break;
case CMD_START:
case CMD_STOP:
case CMD_FLUSH:
break;
case CMD_WRITE:
case CMD_CLEAR:
case CMD_RESET:
CLEAR_FLAG(ior->io_Flags,IOF_QUICK);
SET_FLAG(ior->io_Flags,IOPARF_QUEUED);
PutMsg(&du->du_Unit.unit_MsgPort,(struct Message *)ior);
ior = NULL;
break;
case PDCMD_QUERY:
((struct IOExtPar *)ior)->io_Status = 0;
break;
case PDCMD_SETPARAMS:
if(FLAG_IS_SET(((struct IOExtPar *)ior)->io_ParFlags,PARF_SHARED))
ior->io_Error = ParErr_DevBusy;
break;
case NSCMD_DEVICEQUERY:
if(ior->io_Data != NULL && ior->io_Length >= sizeof(struct NSDeviceQueryResult))
{
STATIC UWORD SupportedCommands[] =
{
CMD_READ,
CMD_START,
CMD_STOP,
CMD_RESET,
CMD_CLEAR,
CMD_WRITE,
CMD_FLUSH,
PDCMD_QUERY,
PDCMD_SETPARAMS,
NSCMD_DEVICEQUERY,
0
};
struct NSDeviceQueryResult * qr = ior->io_Data;
qr->SizeAvailable = 16;
qr->DeviceType = NSDEVTYPE_PARALLEL;
qr->DeviceSubType = 0;
qr->SupportedCommands = SupportedCommands;
ior->io_Actual = 16;
}
else
{
ior->io_Error = IOERR_BADLENGTH;
}
break;
default:
ior->io_Error = IOERR_NOCMD;
break;
}
if(ior != NULL && FLAG_IS_CLEAR(ior->io_Flags,IOF_QUICK))
ReplyMsg((struct Message *)ior);
}
/****************************************************************************/
STATIC VOID UnitProcessEntry(VOID);
/****************************************************************************/
#ifdef __amigaos4__
STATIC LONG
DevAbortIO(
struct Interface * Self,
struct IORequest * ior)
{
struct DeviceBase *db = (struct DeviceBase *)Self->Data.LibBase;
#else
STATIC LONG ASM
DevAbortIO(
REG(a6, struct DeviceBase * db),
REG(a1, struct IORequest * ior))
{
#endif
LONG result = OK;
Forbid();
if(ior->io_Message.mn_Node.ln_Type != NT_REPLYMSG &&
FLAG_IS_CLEAR(ior->io_Flags,IOF_QUICK))
{
if(FLAG_IS_SET(ior->io_Flags,IOPARF_QUEUED))
{
Remove((struct Node *)ior);
CLEAR_FLAG(ior->io_Flags,IOPARF_QUEUED);
SET_FLAG(ior->io_Flags,IOPARF_ABORT);
ior->io_Error = result = IOERR_ABORTED;
ReplyMsg((struct Message *)ior);
}
}
Permit();
return(result);
}
/****************************************************************************/
#ifdef __amigaos4__
STATIC struct DeviceBase *
DevInit(
struct DeviceBase * db,
BPTR segList,
struct ExecIFace * exec)
{
struct Library *ExecBase = exec->Data.LibBase;
IExec = exec;
#else
STATIC struct DeviceBase * ASM
DevInit(
REG(a0, BPTR segList),
REG(d0, struct DeviceBase * db),
REG(a6, struct Library * ExecBase))
{
#endif
struct DeviceBase * result = NULL;
db->db_SysBase = ExecBase;
if(SysBase->lib_Version >= 37)
{
db->db_SegList = segList;
db->db_Library.lib_Revision = REVISION;
db->db_Counter = 0;
InitSemaphore(&db->db_Lock);
DOSBase = OpenLibrary("dos.library",37);
IntuitionBase = OpenLibrary("intuition.library",37);
UtilityBase = OpenLibrary("utility.library",39);
#ifdef __amigaos4__
NewlibBase = OpenLibrary("newlib.library",50);
INewlib = GetInterface(NewlibBase,"main",1L,NULL);
if (NULL == INewlib)
{
CloseLibrary(NewlibBase);
NewlibBase = NULL;
}
IDOS = (struct DOSIFace *) GetInterface(DOSBase,"main",1L,NULL);
if (NULL == IDOS)
{
CloseLibrary(DOSBase);
DOSBase = NULL;
}
IIntuition = (struct IntuitionIFace *) GetInterface(IntuitionBase,"main",1L,NULL);
if (NULL == IIntuition)
{
CloseLibrary(IntuitionBase);
IntuitionBase = NULL;
}
IUtility = (struct UtilityIFace *) GetInterface(UtilityBase,"main",1L,NULL);
if (NULL == IUtility)
{
CloseLibrary(UtilityBase);
UtilityBase = NULL;
}
#endif
if(DOSBase != NULL && IntuitionBase != NULL && NewlibBase != NULL && UtilityBase != NULL)
{
ULONG i;
memset(db->db_Unit,0,sizeof(db->db_Unit));
for(i = 0 ; i < NUM_ENTRIES(db->db_Unit) ; i++)
{
db->db_Unit[i].du_Process = NULL;
db->db_Unit[i].du_Index = i;
db->db_Unit[i].du_Unit.unit_MsgPort.mp_Flags = PA_SIGNAL;
db->db_Unit[i].du_Unit.unit_MsgPort.mp_SigBit = SIGBREAKB_CTRL_F;
NewList(&db->db_Unit[i].du_Unit.unit_MsgPort.mp_MsgList);
db->db_Unit[i].du_Unit.unit_flags = 0;
db->db_Unit[i].du_Unit.unit_pad = 0;
db->db_Unit[i].du_Unit.unit_OpenCnt = 0;
}
result = db;
}
else
{
#ifdef __amigaos4__
DropInterface((struct Interface *)IUtility);
DropInterface((struct Interface *)IDOS);
DropInterface((struct Interface *)IIntuition);
DropInterface((struct Interface *)INewlib);
CloseLibrary(NewlibBase);
#endif
CloseLibrary(UtilityBase);
CloseLibrary(DOSBase);
CloseLibrary(IntuitionBase);
}
}
if(result == NULL)
{
#ifdef __amigaos4__
DeleteLibrary((struct Library *)db);
#else
FreeMem((BYTE *)db - db->db_Library.lib_NegSize,
db->db_Library.lib_NegSize + db->db_Library.lib_PosSize);
#endif
}
return(result);
}
/****************************************************************************/
#ifdef __amigaos4__
STATIC LONG
DevOpen(
struct Interface * Self,
struct IORequest * ior,
ULONG unitNumber,
ULONG flags)
{
struct DeviceBase *db = (struct DeviceBase *)Self->Data.LibBase;
#else
STATIC LONG ASM
DevOpen(
REG(d0, ULONG unitNumber),
REG(d1, ULONG flags),
REG(a1, struct IORequest * ior),
REG(a6, struct DeviceBase * db))
{
#endif
LONG result = ParErr_InitErr;
if(0 <= unitNumber && unitNumber < NUM_ENTRIES(db->db_Unit))
{
struct DeviceUnit * du = &db->db_Unit[unitNumber];
BOOL unlocked = FALSE;
db->db_Library.lib_OpenCnt++;
ObtainSemaphore(&db->db_Lock);
if(db->db_Library.lib_OpenCnt == 1)
{
#if 0
if(db->db_LocaleBase == NULL)
{
db->db_LocaleBase = OpenLibrary("locale.library",38);
#ifdef __amigaos4__
ILocale = (struct LocaleIFace *) GetInterface(LocaleBase,"main",1L,NULL);
if (ILocale == NULL)
{
CloseLibrary(LocaleBase);
LocaleBase = NULL;
}
#endif
if(db->db_LocaleBase != NULL)
db->db_Catalog = OpenCatalog(NULL,"lpr.catalog",0UL);
}
#endif
}
if(du->du_Unit.unit_OpenCnt == 0)
{
du->du_Unit.unit_OpenCnt++;
ReleaseSemaphore(&db->db_Lock);
unlocked = TRUE;
du->du_Process = CreateNewProcTags(
NP_Entry, UnitProcessEntry,
NP_Name, db->db_Library.lib_Node.ln_Name,
NP_ConsoleTask, NULL,
NP_StackSize, 131072,
TAG_DONE);
if(du->du_Process != NULL)
{
du->du_Unit.unit_MsgPort.mp_SigTask = du->du_Process;
du->du_Process->pr_Task.tc_UserData = du;
Signal((struct Task *)du->du_Process,SIGF_Wakeup);
SendCmd(db,du,CMD_OpenUnit);
ior->io_Unit = (struct Unit *)du;
ior->io_Message.mn_Node.ln_Type = NT_REPLYMSG;
ior->io_Unit->unit_OpenCnt++;
db->db_Library.lib_OpenCnt++;
result = OK;
}
du->du_Unit.unit_OpenCnt--;
}
if(NOT unlocked)
ReleaseSemaphore(&db->db_Lock);
db->db_Library.lib_OpenCnt--;
}
else
{
result = IOERR_OPENFAIL;
}
if(result != OK)
{
ior->io_Device = NULL;
ior->io_Unit = NULL;
}
ior->io_Error = result;
return(result);
}
/****************************************************************************/
#ifdef __amigaos4__
STATIC BPTR
DevExpunge(struct Interface * Self)
{
struct DeviceBase *db = (struct DeviceBase *)Self->Data.LibBase;
#else
STATIC BPTR ASM
DevExpunge(REG(a6, struct DeviceBase * db))
{
#endif
BPTR result = ZERO;
if(db->db_Library.lib_OpenCnt == 0)
{
Remove((struct Node *)db);
#ifdef __amigaos4__
DropInterface((struct Interface *)IUtility);
DropInterface((struct Interface *)IDOS);
DropInterface((struct Interface *)IIntuition);
DropInterface((struct Interface *)INewlib);
CloseLibrary(NewlibBase);
#endif
CloseLibrary(UtilityBase);
CloseLibrary(DOSBase);
CloseLibrary(IntuitionBase);
result = db->db_SegList;
#ifdef __amigaos4__
DeleteLibrary((struct Library *)db);
#else
FreeMem((BYTE *)db - db->db_Library.lib_NegSize,
db->db_Library.lib_NegSize + db->db_Library.lib_PosSize);
#endif
}
else
{
SET_FLAG(db->db_Library.lib_Flags,LIBF_DELEXP);
}
return(result);
}
/****************************************************************************/
#ifdef __amigaos4__
STATIC BPTR
DevClose(
struct Interface * Self,
struct IORequest * ior)
{
struct DeviceBase *db = (struct DeviceBase *)Self->Data.LibBase;
#else
STATIC BPTR ASM
DevClose(
REG(a1, struct IORequest * ior),
REG(a6, struct DeviceBase * db))
{
#endif
BPTR result = ZERO;
ObtainSemaphore(&db->db_Lock);
if(ior->io_Unit != NULL)
{
struct DeviceUnit * du = (struct DeviceUnit *)ior->io_Unit;
ior->io_Unit->unit_OpenCnt--;
if(ior->io_Unit->unit_OpenCnt == 0)
SendCmd(db,du,CMD_CloseUnit);
}
db->db_Library.lib_OpenCnt--;
if(db->db_Library.lib_OpenCnt == 0)
{
/*
#ifdef __amigaos4__
DropInterface((struct Interface *)ILocale);
ILocale = NULL;
#endif
CloseLibrary(db->db_LocaleBase);
db->db_LocaleBase = NULL;
*/
}
ReleaseSemaphore(&db->db_Lock);
ior->io_Device = NULL;
ior->io_Unit = NULL;
if(db->db_Library.lib_OpenCnt == 0 && FLAG_IS_SET(db->db_Library.lib_Flags,LIBF_DELEXP))
#ifdef __amigaos4__
result = DevExpunge(Self);
#else
result = DevExpunge(db);
#endif
return(result);
}
/****************************************************************************/
#ifdef __amigaos4__
int _start(void)
{ return 30; }
STATIC ULONG Obtain(struct Interface *Self)
{
return Self->Data.RefCount++;
}
/*****************************************************************************/
STATIC ULONG Release(struct Interface *Self)
{
return Self->Data.RefCount--;
}
/*****************************************************************************/
STATIC CONST APTR manager_vectors[] =
{
Obtain,
Release,
NULL,
NULL,
DevOpen,
DevClose,
DevExpunge,
NULL,
DevBeginIO,
DevAbortIO,
(APTR)-1
};
STATIC CONST struct TagItem devmanagerTags[] =
{
{MIT_Name, (ULONG)"__device"},
{MIT_VectorTable, (ULONG)manager_vectors},
{MIT_Version, 1},
{TAG_DONE, 0}
};
STATIC CONST APTR main_vectors[]=
{
Obtain,
Release,
NULL,
NULL,
(APTR)-1
};
STATIC CONST struct TagItem mainTags[] =
{
{MIT_Name, (ULONG)"main"},
{MIT_VectorTable, (ULONG)main_vectors},
{MIT_Version, 1},
{TAG_DONE, 0}
};
// MLT_INTERFACES array
STATIC CONST CONST_APTR libInterfaces[] =
{
devmanagerTags,
mainTags,
NULL
};
extern CONST CONST_APTR VecTable68K[];
STATIC CONST struct TagItem initTab[] =
{
{CLT_DataSize, (ULONG)(sizeof(struct DeviceBase))},
{CLT_Interfaces, (ULONG)libInterfaces},
{CLT_InitFunc, (ULONG)DevInit},
{CLT_Vector68K, (ULONG)VecTable68K},
{TAG_DONE, 0}
};
STATIC const struct Resident DevTag =
{
RTC_MATCHWORD,
&DevTag,
&DevTag + 1,
RTF_AUTOINIT | RTF_NATIVE,
VERSION,
NT_DEVICE,
0,
"ipp.device",
VSTRING,
initTab
};
#else
STATIC ULONG
DevReserved(VOID)
{
return(0);
}
/****************************************************************************/
struct DevInitData
{
ULONG did_LibraryBaseSize;
APTR did_FunctionVector;
APTR did_InitTable;
APTR did_InitRoutine;
};
/****************************************************************************/
STATIC const APTR FunctionVector[] =
{
DevOpen,
DevClose,
DevExpunge,
DevReserved,
/************************************************************************/
DevBeginIO,
DevAbortIO,
/************************************************************************/
(APTR)-1
};
STATIC const struct DevInitData DevInitData =
{
sizeof(struct DeviceBase),
FunctionVector,
NULL,
DevInit
};
STATIC const struct Resident DevTag =
{
RTC_MATCHWORD,
&DevTag,
&DevTag + 1,
RTF_AUTOINIT,
VERSION,
NT_DEVICE,
0,
"ipp.device",
VSTRING,
&DevInitData
};
#endif
struct Resident * SAS_Hack = &DevTag;
/****************************************************************************/
#undef SysBase
#undef IExec
/****************************************************************************/
VOID VARARGS68K SPrintf(struct DeviceBase *,STRPTR,STRPTR,...);
/****************************************************************************/
STATIC VOID
FillFaultString(struct DeviceBase * db,LONG error,STRPTR buffer,LONG buffer_size)
{
if(Fault(error,NULL,buffer,buffer_size) > 0)
{
LONG len = strlen(buffer);
while(len > 0 && buffer[len-1] == '\n')
buffer[--len] = '\0';
}
else
{
strcpy(buffer,"");
}
}
/****************************************************************************/
struct MemNode
{
struct MinNode mn_MinNode;
UBYTE mn_Data[1000];
UWORD mn_Size;
};
/****************************************************************************/
STATIC VOID
UnitProcessEntry(VOID)
{
struct Library * SysBase = (*(struct Library **)4L);
#ifdef __amigaos4__
struct ExecIFace * IExec = (struct ExecIFace *) ((struct ExecBase *)SysBase)->MainInterface;
#endif
struct Process * thisProcess;
struct DeviceBase * db = NULL;
struct DeviceUnit * du;
struct MsgPort * port;
struct IOStdReq * ior;
BOOL done = FALSE;
BOOL opened = FALSE;
int error = 0;
int ret;
int bytes = 0;
int count = 0;
BPTR fh = ZERO;
LONG file_size = 0;
BOOL ready = FALSE;
UBYTE temp_buffer[2048];
UBYTE control_buffer[1024];
char printer[1024];
char path[1024];
char template[1024];
char *uri;
LONG mode = -1;
APTR mem_pool;
struct List mem_list;
struct MemNode * mem_node;
struct
{
KEY Printer;
KEY Path;
KEY Template;
} cmd_args;
STRPTR cmd_template =
"PRINTER/A,PATH/K,TEMPLATE/K";
Wait(SIGF_Wakeup);
thisProcess = (struct Process *)FindTask(NULL);
du = thisProcess->pr_Task.tc_UserData;
port = &du->du_Unit.unit_MsgPort;
mem_pool = NULL;
mem_node = NULL;
NewList(&mem_list);
memset(&cmd_args,0,sizeof(cmd_args));
do
{
WaitPort(port);
Forbid();
while((ior = (struct IOStdReq *)GetMsg(port)) != NULL)
{
CLEAR_FLAG(ior->io_Flags,IOPARF_QUEUED);
Permit();
switch(ior->io_Command)
{
case CMD_OpenUnit:
{
UBYTE env_name[80];
BOOL got_env;
db = (struct DeviceBase *)ior->io_Device;
SPrintf(db,env_name,"%s/%ld",thisProcess->pr_Task.tc_Node.ln_Name,du->du_Index);
got_env = FALSE;
if(GetVar(env_name,temp_buffer,sizeof(temp_buffer)-1,GVF_GLOBAL_ONLY) > 0)
{
got_env = TRUE;
}
else
{
strcpy(env_name,thisProcess->pr_Task.tc_Node.ln_Name);
if(GetVar(env_name,temp_buffer,sizeof(temp_buffer)-1,0) > 0)
got_env = TRUE;
}
if(got_env)
{
struct RDArgs * rda;
rda = (struct RDArgs *)AllocDosObjectTagList(DOS_RDARGS,NULL);
if(rda != NULL)
{
strcat(temp_buffer,"\n");
rda->RDA_Source.CS_Buffer = temp_buffer;
rda->RDA_Source.CS_Length = strlen(temp_buffer);
rda->RDA_Source.CS_CurChr = 0;
rda->RDA_Flags |= RDAF_NOPROMPT;
memset(&cmd_args,0,sizeof(cmd_args));
if(ReadArgs(cmd_template,(LONG *)&cmd_args,rda))
{
if(cmd_args.Printer) {
strncpy(printer,cmd_args.Printer,sizeof(printer)-1);
printer[sizeof(printer)-1] = '\0';
}
if(cmd_args.Path) {
strncpy(path,cmd_args.Path,sizeof(path)-1);
path[sizeof(path)-1] = '\0';
}
if(cmd_args.Template) {
strncpy(template,cmd_args.Template,sizeof(template)-1);
template[sizeof(template)-1] = '\0';
}
}
else
{
FillFaultString(db,IoErr(),temp_buffer,sizeof(temp_buffer));
/*
ShowEasyRequest(db,Quote(db,MSG_ERROR_READING_ENV_VARIABLE_TXT),
env_name,temp_buffer);
*/