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/*###################################################################################
#
# Embperl - Copyright (c) 1997-1998 Gerald Richter / ECOS
#
# You may distribute under the terms of either the GNU General Public
# License or the Artistic License, as specified in the Perl README file.
# For use with Apache httpd and mod_perl, see also Apache copyright.
#
# THIS PACKAGE IS PROVIDED "AS IS" AND WITHOUT ANY EXPRESS OR
# IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
# WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
#
###################################################################################*/
#include "ep.h"
#include "epmacro.h"
/*
* Files
*/
#ifdef PerlIO
#define FILEIOTYPE "PerlIO"
static PerlIO * ifd = NULL ; /* input file */
static PerlIO * ofd = NULL ; /* output file */
static PerlIO * lfd = NULL ; /* log file */
#else
#define FILEIOTYPE "StdIO"
static FILE * ifd = NULL ; /* input file */
static FILE * ofd = NULL ; /* output file */
static FILE * lfd = NULL ; /* log file */
#endif
static char sLogFilename [512] = "" ;
#ifndef PerlIO
/* define same helper macros to let it run with plain perl 5.003 */
/* where no PerlIO is present */
#define PerlIO_stdinF stdin
#define PerlIO_stdoutF stdout
#define PerlIO_stderrF stderr
#define PerlIO_close fclose
#define PerlIO_open fopen
#define PerlIO_flush fflush
#define PerlIO_vprintf vfprintf
#define PerlIO_fileno fileno
#define PerlIO_tell ftell
#define PerlIO_read(f,buf,cnt) fread(buf,1,cnt,f)
#define PerlIO_write(f,buf,cnt) fwrite(buf,1,cnt,f)
#define PerlIO_putc(f,c) fputc(c,f)
#else
#define PerlIO_stdinF PerlIO_stdin ()
#define PerlIO_stdoutF PerlIO_stdout ()
#define PerlIO_stderrF PerlIO_stderr ()
#endif
#ifdef APACHE
#define DefaultLog "/tmp/embperl.log"
#endif
/*
* Alloced memory for debugging
*/
size_t nAllocSize = 0 ;
/*
* Datastructure for buffering output
*/
static struct tBuf * pFirstBuf = NULL ; /* First buffer */
static struct tBuf * pLastBuf = NULL ; /* Last written buffer */
static struct tBuf * pFreeBuf = NULL ; /* List of unused buffers */
static struct tBuf * pLastFreeBuf = NULL ; /* End of list of unused buffers */
static char * pMemBuf ; /* temporary output */
static size_t nMemBufSize ; /* remaining space in pMemBuf */
/*
* Makers for rollback output
*/
int nMarker ;
/* -------------------------------------------------------------------------------------
*
* begin output transaction
*
-------------------------------------------------------------------------------------- */
struct tBuf * oBegin ()
{
EPENTRY1N (oBegin, nMarker) ;
nMarker++ ;
return pLastBuf ;
}
/* -------------------------------------------------------------------------------------
*
* rollback output transaction (throw away all the output since corresponding begin)
*
-------------------------------------------------------------------------------------- */
void oRollbackOutput (struct tBuf * pBuf)
{
EPENTRY1N (oRollback, nMarker) ;
if (pBuf == NULL)
{
if (pLastFreeBuf)
pLastFreeBuf -> pNext = pFirstBuf ;
else
pFreeBuf = pFirstBuf ;
pLastFreeBuf = pLastBuf ;
pFirstBuf = NULL ;
nMarker = 0 ;
}
else
{
if (pLastBuf == pBuf || pBuf -> pNext == NULL)
nMarker-- ;
else
{
nMarker = pBuf -> pNext -> nMarker - 1 ;
if (pLastFreeBuf)
pLastFreeBuf -> pNext = pBuf -> pNext ;
else
pFreeBuf = pBuf -> pNext ;
pLastFreeBuf = pLastBuf ;
}
pBuf -> pNext = NULL ;
}
pLastBuf = pBuf ;
}
/* -------------------------------------------------------------------------------------
*
* rollback output transaction and errors(throw away all the output since corresponding
* begin)
*
-------------------------------------------------------------------------------------- */
void oRollback (struct tBuf * pBuf)
{
oRollbackOutput (pBuf) ;
RollbackError () ;
}
/* ---------------------------------------------------------------------------- */
/* */
/* commit output transaction (all the output since corresponding begin is vaild)*/
/* */
/* ---------------------------------------------------------------------------- */
void oCommitToMem (struct tBuf * pBuf,
char * pOut)
{
EPENTRY1N (oCommit, nMarker) ;
if (pBuf == NULL)
nMarker = 0 ;
else
if (pLastBuf == pBuf)
nMarker-- ;
else
nMarker = pBuf -> pNext -> nMarker - 1 ;
if (nMarker == 0)
{
if (pBuf == NULL)
pBuf = pFirstBuf ;
else
pBuf = pBuf -> pNext ;
if (pOut)
{
while (pBuf)
{
memmove (pOut, pBuf + 1, pBuf -> nSize) ;
pOut += pBuf -> nSize ;
pBuf = pBuf -> pNext ;
}
*pOut = '\0' ;
}
else
{
while (pBuf)
{
owrite (pBuf + 1, 1, pBuf -> nSize) ;
pBuf = pBuf -> pNext ;
}
}
}
CommitError () ;
}
/* ---------------------------------------------------------------------------- */
/* */
/* commit output transaction (all the output since corresponding begin is vaild)*/
/* */
/* ---------------------------------------------------------------------------- */
void oCommit (struct tBuf * pBuf)
{
EPENTRY1N (oCommit, nMarker) ;
oCommitToMem (pBuf, NULL) ;
}
/* ---------------------------------------------------------------------------- */
/* */
/* write to a buffer */
/* */
/* we will alloc a new buffer for every write */
/* this is fast with apache palloc or for malloc if no free is call in between */
/* */
/* ---------------------------------------------------------------------------- */
static int bufwrite (/*in*/ const void * ptr, size_t size)
{
struct tBuf * pBuf ;
EPENTRY1N (bufwrite, nMarker) ;
pBuf = (struct tBuf *)_malloc (size + sizeof (struct tBuf)) ;
if (pBuf == NULL)
return 0 ;
memcpy (pBuf + 1, ptr, size) ;
pBuf -> pNext = NULL ;
pBuf -> nSize = size ;
pBuf -> nMarker = nMarker ;
if (pLastBuf)
{
pLastBuf -> pNext = pBuf ;
pBuf -> nCount = pLastBuf -> nCount + size ;
}
else
pBuf -> nCount = size ;
if (pFirstBuf == NULL)
pFirstBuf = pBuf ;
pLastBuf = pBuf ;
return size ;
}
/* ---------------------------------------------------------------------------- */
/* */
/* free buffers */
/* */
/* free all buffers */
/* note: this is not nessecary for apache palloc, because all buffers are freed */
/* at the end of the request */
/* */
/* ---------------------------------------------------------------------------- */
static void buffree ()
{
struct tBuf * pNext = NULL ;
struct tBuf * pBuf ;
#ifdef APACHE
if ((bDebug & dbgMem) == 0 && pReq != NULL)
{
pFirstBuf = NULL ;
pLastBuf = NULL ;
pFreeBuf = NULL ;
pLastFreeBuf = NULL ;
return ; /* no need for apache to free memory */
}
#endif
/* first walk thru the used buffers */
pBuf = pFirstBuf ;
while (pBuf)
{
pNext = pBuf -> pNext ;
_free (pBuf) ;
pBuf = pNext ;
}
pFirstBuf = NULL ;
pLastBuf = NULL ;
/* now walk thru the unused buffers */
pBuf = pFreeBuf ;
while (pBuf)
{
pNext = pBuf -> pNext ;
_free (pBuf) ;
pBuf = pNext ;
}
pFreeBuf = NULL ;
pLastFreeBuf = NULL ;
}
/* ---------------------------------------------------------------------------- */
/* */
/* get the length outputed to buffers so far */
/* */
/* ---------------------------------------------------------------------------- */
int GetContentLength ()
{
if (pLastBuf)
return pLastBuf -> nCount ;
else
return 0 ;
}
/* ---------------------------------------------------------------------------- */
/* */
/* set the name of the input file and open it */
/* */
/* ---------------------------------------------------------------------------- */
int OpenInput (/*in*/ const char * sFilename)
{
#ifdef APACHE
if (pReq)
return ok ;
#endif
if (ifd && ifd != PerlIO_stdinF)
PerlIO_close (ifd) ;
ifd = NULL ;
if (sFilename == NULL || *sFilename == '\0')
{
/*
GV * io = gv_fetchpv("STDIN", TRUE, SVt_PVIO) ;
if (io == NULL || (ifd = IoIFP(io)) == NULL)
{
if (bDebug)
lprintf ("[%d]Cannot get Perl STDIN, open os stdin\n", nPid) ;
ifd = PerlIO_stdinF ;
}
*/
ifd = PerlIO_stdinF ;
return ok ;
}
if ((ifd = PerlIO_open (sFilename, "r")) == NULL)
{
strncpy (errdat1, sFilename, sizeof (errdat1) - 1) ;
strncpy (errdat2, Strerror(errno), sizeof (errdat2) - 1) ;
return rcFileOpenErr ;
}
return ok ;
}
/* ---------------------------------------------------------------------------- */
/* */
/* close input file */
/* */
/* ---------------------------------------------------------------------------- */
int CloseInput ()
{
#ifdef APACHE
if (pReq)
return ok ;
#endif
if (ifd && ifd != PerlIO_stdinF)
PerlIO_close (ifd) ;
ifd = NULL ;
return ok ;
}
/* ---------------------------------------------------------------------------- */
/* */
/* read block of data from input (web client) */
/* */
/* ---------------------------------------------------------------------------- */
int iread (/*in*/ void * ptr, size_t size, size_t nmemb)
{
int n = size * nmemb ;
if (n == 0)
return 0 ;
#if defined (APACHE)
if (pReq)
{
setup_client_block(pReq, REQUEST_CHUNKED_ERROR);
if(should_client_block(pReq))
{
int c = get_client_block(pReq, ptr, n);
return c / size ;
}
else
return 0 ;
}
#endif
return PerlIO_read (ifd, ptr, n) ;
}
/* ---------------------------------------------------------------------------- */
/* */
/* read line of data from input (web client) */
/* */
/* ---------------------------------------------------------------------------- */
char * igets (/*in*/ char * s, int size)
{
#if defined (APACHE)
if (pReq)
return NULL ;
#endif
#ifdef PerlIO
{
/*
FILE * f = PerlIO_exportFILE (ifd, 0) ;
char * p = fgets (s, size, f) ;
PerlIO_releaseFILE (ifd, f) ;
return p ;
*/
return NULL ;
}
#else
return fgets (s, size, ifd) ;
#endif
}
/* ---------------------------------------------------------------------------- */
/* */
/* read HTML File into pBuf */
/* */
/* ---------------------------------------------------------------------------- */
int ReadHTML (/*in*/ char * sInputfile,
/*in*/ size_t * nFileSize,
/*out*/ SV * * ppBuf)
{
SV * pBufSV ;
char * pData ;
#ifdef PerlIO
PerlIO * ifd ;
#else
FILE * ifd ;
#endif
if (bDebug)
lprintf ("[%d]Reading %s as input using %s ...\n", nPid, sInputfile, FILEIOTYPE) ;
#ifdef WIN32
if ((ifd = PerlIO_open (sInputfile, "rb")) == NULL)
#else
if ((ifd = PerlIO_open (sInputfile, "r")) == NULL)
#endif
{
strncpy (errdat1, sInputfile, sizeof (errdat1) - 1) ;
strncpy (errdat2, Strerror(errno), sizeof (errdat2) - 1) ;
return rcFileOpenErr ;
}
pBufSV = sv_2mortal (newSV(*nFileSize + 1)) ;
pData = SvPVX(pBufSV) ;
*nFileSize = PerlIO_read (ifd, pData, *nFileSize) ;
PerlIO_close (ifd) ;
pData [*nFileSize] = '\0' ;
SvCUR_set (pBufSV, *nFileSize) ;
SvTEMP_off (pBufSV) ;
SvPOK_on (pBufSV) ;
*ppBuf = pBufSV ;
return ok ;
}
/* ---------------------------------------------------------------------------- */
/* */
/* set the name of the output file and open it */
/* */
/* ---------------------------------------------------------------------------- */
int OpenOutput (/*in*/ const char * sFilename)
{
pFirstBuf = NULL ;
pLastBuf = NULL ;
nMarker = 0 ;
pMemBuf = NULL ;
nMemBufSize = 0 ;
/* make sure all old buffers are freed */
buffree () ;
#if defined (APACHE)
if (pReq)
{
if (bDebug)
lprintf ("[%d]Using APACHE for output...\n", nPid) ;
return ok ;
}
#endif
if (ofd && ofd != PerlIO_stdoutF)
PerlIO_close (ofd) ;
ofd = NULL ;
if (sFilename == NULL || *sFilename == '\0')
{
/*
GV * io = gv_fetchpv("STDOUT", TRUE, SVt_PVIO) ;
if (io == NULL || (ofd = IoOFP(io)) == NULL)
{
if (bDebug)
lprintf ("[%d]Cannot get Perl STDOUT, open os stdout\n", nPid) ;
ofd = PerlIO_stdoutF ;
}
*/
ofd = PerlIO_stdoutF ;
if (bDebug)
{
#ifdef APACHE
if (pReq)
lprintf ("[%d]Open STDOUT to Apache for output...\n", nPid) ;
else
#endif
lprintf ("[%d]Open STDOUT for output...\n", nPid) ;
}
return ok ;
}
if (bDebug)
lprintf ("[%d]Open %s for output...\n", nPid, sFilename) ;
#ifdef WIN32
if ((ofd = PerlIO_open (sFilename, "wb")) == NULL)
#else
if ((ofd = PerlIO_open (sFilename, "w")) == NULL)
#endif
{
strncpy (errdat1, sFilename, sizeof (errdat1) - 1) ;
strncpy (errdat2, Strerror(errno), sizeof (errdat2) - 1) ;
return rcFileOpenErr ;
}
return ok ;
}
/* ---------------------------------------------------------------------------- */
/* */
/* close the output file */
/* */
/* ---------------------------------------------------------------------------- */
int CloseOutput ()
{
/* make sure all buffers are freed */
buffree () ;
#if defined (APACHE)
if (pReq)
return ok ;
#endif
if (ofd && ofd != PerlIO_stdoutF)
PerlIO_close (ofd) ;
ofd = NULL ;
return ok ;
}
/* ---------------------------------------------------------------------------- */
/* */
/* set output to memory buffer */
/* */
/* ---------------------------------------------------------------------------- */
void OutputToMemBuf (/*in*/ char * pBuf,
/*in*/ size_t nBufSize)
{
pMemBuf = pBuf ;
nMemBufSize = nBufSize ;
}
/* ---------------------------------------------------------------------------- */
/* */
/* set output to standard */
/* */
/* ---------------------------------------------------------------------------- */
void OutputToStd ()
{
pMemBuf = NULL ;
nMemBufSize = 0 ;
}
/* ---------------------------------------------------------------------------- */
/* */
/* puts to output (web client) */
/* */
/* ---------------------------------------------------------------------------- */
int oputs (/*in*/ const char * str)
{
return owrite (str, 1, strlen (str)) ;
}
/* ---------------------------------------------------------------------------- */
/* */
/* write block of data to output (web client) */
/* */
/* ---------------------------------------------------------------------------- */
int owrite (/*in*/ const void * ptr, size_t size, size_t nmemb)
{
int n = size * nmemb ;
if (n == 0)
return 0 ;
if (pMemBuf)
{
if (n >= nMemBufSize)
n = nMemBufSize - 1 ;
memcpy (pMemBuf, ptr, n) ;
pMemBuf += n ;
*pMemBuf = '\0' ;
nMemBufSize -= n ;
return n / size ;
}
if (nMarker)
return bufwrite (ptr, n) / size ;
#if defined (APACHE)
if (pReq)
{
if (n > 0)
{
n = rwrite (ptr, n, pReq) ;
if (bDebug & dbgFlushOutput)
rflush (pReq) ;
return n / size ;
}
else
return 0 ;
}
#endif
if (n > 0)
{
n = PerlIO_write (ofd, (void *)ptr, size * nmemb) ;
if (bDebug & dbgFlushOutput)
PerlIO_flush (ofd) ;
}
return n / size ;
}
/* ---------------------------------------------------------------------------- */
/* */
/* write one char to output (web client) */
/* */
/* ---------------------------------------------------------------------------- */
void oputc (/*in*/ char c)
{
if (nMarker || pMemBuf)
{
owrite (&c, 1, 1) ;
return ;
}
#if defined (APACHE)
if (pReq)
{
rputc (c, pReq) ;
if (bDebug & dbgFlushOutput)
rflush (pReq) ;
return ;
}
#endif
PerlIO_putc (ofd, c) ;
if (bDebug & dbgFlushOutput)
PerlIO_flush (ofd) ;
}
/* ---------------------------------------------------------------------------- */
/* */
/* set the name of the log file and open it */
/* */
/* nMode = 0 open later, save filename only */
/* nMode = 1 open now */
/* nMode = 2 open with saved filename */
/* */
/* ---------------------------------------------------------------------------- */
int OpenLog (/*in*/ const char * sFilename,
/*in*/ int nMode)
{
if (sFilename == NULL)
sFilename = "" ;
if (lfd && (nMode == 2 || strcmp (sLogFilename, sFilename) == 0))
return ok ; /*already open */
if (lfd && lfd != PerlIO_stdoutF)
PerlIO_close (lfd) ; /* close old logfile */
lfd = NULL ;
if (nMode != 2)
{
strncpy (sLogFilename, sFilename, sizeof (sLogFilename) - 1) ;
sLogFilename[sizeof (sLogFilename) - 1] = '\0' ;
}
if (*sLogFilename == '\0')
{
sLogFilename[0] = '\0' ;
lfd = PerlIO_stdoutF ;
return ok ;
}
if (nMode == 0)
return ok ;
if ((lfd = PerlIO_open (sLogFilename, "a")) == NULL)
{
strncpy (errdat1, sLogFilename, sizeof (errdat1) - 1) ;
strncpy (errdat2, Strerror(errno), sizeof (errdat2) - 1) ;
return rcLogFileOpenErr ;
}
return ok ;
}
/* ---------------------------------------------------------------------------- */
/* */
/* return the handle of the log file */
/* */
/* ---------------------------------------------------------------------------- */
int GetLogHandle ()
{
if (lfd)
return PerlIO_fileno (lfd) ;
return 0 ;
}
/* ---------------------------------------------------------------------------- */
/* */
/* return the current posittion of the log file */
/* */
/* ---------------------------------------------------------------------------- */
long GetLogFilePos ()
{
if (lfd)
return PerlIO_tell (lfd) ;
return 0 ;
}
/* ---------------------------------------------------------------------------- */
/* */
/* close the log file */
/* */
/* ---------------------------------------------------------------------------- */
int CloseLog ()
{
if (lfd && lfd != PerlIO_stdoutF)
PerlIO_close (lfd) ;
lfd = NULL ;
return ok ;
}
/* ---------------------------------------------------------------------------- */
/* */
/* flush the log file */
/* */
/* ---------------------------------------------------------------------------- */
int FlushLog ()
{
if (lfd != NULL)
PerlIO_flush (lfd) ;
return ok ;
}
/* ---------------------------------------------------------------------------- */
/* */
/* printf to log file */
/* */
/* ---------------------------------------------------------------------------- */
int lprintf (/*in*/ const char * sFormat,
/*in*/ ...)
{
va_list ap ;
int n ;
if (lfd == NULL)
return 0 ;
va_start (ap, sFormat) ;
{
n = PerlIO_vprintf (lfd, sFormat, ap) ;
if (bDebug & dbgFlushLog)
PerlIO_flush (lfd) ;
}
va_end (ap) ;
return n ;
}
/* ---------------------------------------------------------------------------- */
/* */
/* write block of data to log file */
/* */
/* ---------------------------------------------------------------------------- */
int lwrite (/*in*/ const void * ptr, size_t size, size_t nmemb)
{
int n ;
if (lfd == NULL)
return 0 ;
n = PerlIO_write (lfd, (void *)ptr, size * nmemb) ;
if (bDebug & dbgFlushLog)
PerlIO_flush (lfd) ;
return n ;
}
/* ---------------------------------------------------------------------------- */
/* */
/* Memory Allocation */
/* */
/* ---------------------------------------------------------------------------- */
void _free (void * p)
{
if (bDebug & dbgMem)
{
size_t size ;
/* we do it a bit complicted so it compiles also on aix */
size_t * ps = (size_t *)p ;
ps-- ;
size = *ps ;
p = ps ;
nAllocSize -= size ;
lprintf ("[%d]MEM: Free %d Bytes at %08x Allocated so far %d Bytes\n" ,nPid, size, p, nAllocSize) ;
}
#ifdef APACHE
if (pReq == NULL)
#endif
free (p) ;
}
void * _malloc (size_t size)
{
void * p ;
#ifdef APACHE
if (pReq)
{
p = palloc (pReq -> pool, size + sizeof (size)) ;
}
else
#endif
p = malloc (size + sizeof (size)) ;
if (bDebug & dbgMem)
{
/* we do it a bit complicted so it compiles also on aix */
size_t * ps = (size_t *)p ;
nAllocSize += size ;
*ps = size ;
ps++ ;
p = ps ;
lprintf ("[%d]MEM: Alloc %d Bytes at %08x Allocated so far %d Bytes\n" ,nPid, size, p, nAllocSize) ;
}
return p ;
}
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