text: /* crypto/bio/bss_log.c */
  /* ====================================================================
   * Copyright (c) 1999 The OpenSSL Project.  All rights reserved.
   *
   * Redistribution and use in source and binary forms, with or without
   * modification, are permitted provided that the following conditions
   * are met:
   *
   * 1. Redistributions of source code must retain the above copyright
   *    notice, this list of conditions and the following disclaimer. 
   *
   * 2. Redistributions in binary form must reproduce the above copyright
   *    notice, this list of conditions and the following disclaimer in
   *    the documentation and/or other materials provided with the
   *    distribution.
   *
   * 3. All advertising materials mentioning features or use of this
   *    software must display the following acknowledgment:
   *    "This product includes software developed by the OpenSSL Project
   *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
   *
   * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
   *    endorse or promote products derived from this software without
   *    prior written permission. For written permission, please contact
   *    licensing@OpenSSL.org.
   *
   * 5. Products derived from this software may not be called "OpenSSL"
   *    nor may "OpenSSL" appear in their names without prior written
   *    permission of the OpenSSL Project.
   *
   * 6. Redistributions of any form whatsoever must retain the following
   *    acknowledgment:
   *    "This product includes software developed by the OpenSSL Project
   *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
   *
   * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
   * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
   * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
   * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
   * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
   * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
   * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
   * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
   * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
   * OF THE POSSIBILITY OF SUCH DAMAGE.
   * ====================================================================
   *
   * This product includes cryptographic software written by Eric Young
   * (eay@cryptsoft.com).  This product includes software written by Tim
   * Hudson (tjh@cryptsoft.com).
   *
   */
  
  /*
  	Why BIO_s_log?
  
  	BIO_s_log is useful for system daemons (or services under NT).
  	It is one-way BIO, it sends all stuff to syslogd (on system that
  	commonly use that), or event log (on NT), or OPCOM (on OpenVMS).
  
  */
  
  
  #include <stdio.h>
  #include <errno.h>
  
  #include "cryptlib.h"
  
  #if defined(OPENSSL_SYS_WINCE)
  #elif defined(OPENSSL_SYS_WIN32)
  #elif defined(OPENSSL_SYS_VMS)
  #  include <opcdef.h>
  #  include <descrip.h>
  #  include <lib$routines.h>
  #  include <starlet.h>
  /* Some compiler options may mask the declaration of "_malloc32". */
  #  if __INITIAL_POINTER_SIZE && defined _ANSI_C_SOURCE
  #    if __INITIAL_POINTER_SIZE == 64
  #      pragma pointer_size save
  #      pragma pointer_size 32
      void * _malloc32  (__size_t);
  #      pragma pointer_size restore
  #    endif /* __INITIAL_POINTER_SIZE == 64 */
  #  endif /* __INITIAL_POINTER_SIZE && defined _ANSI_C_SOURCE */
  #elif defined(__ultrix)
  #  include <sys/syslog.h>
  #elif defined(OPENSSL_SYS_NETWARE)
  #  define NO_SYSLOG
  #elif (!defined(MSDOS) || defined(WATT32)) && !defined(OPENSSL_SYS_VXWORKS) && !defined(NO_SYSLOG)
  #  include <syslog.h>
  #endif
  
  #include <openssl/buffer.h>
  #include <openssl/err.h>
  
  #ifndef NO_SYSLOG
  
  #if defined(OPENSSL_SYS_WIN32)
  #define LOG_EMERG	0
  #define LOG_ALERT	1
  #define LOG_CRIT	2
  #define LOG_ERR		3
  #define LOG_WARNING	4
  #define LOG_NOTICE	5
  #define LOG_INFO	6
  #define LOG_DEBUG	7
  
  #define LOG_DAEMON	(3<<3)
  #elif defined(OPENSSL_SYS_VMS)
  /* On VMS, we don't really care about these, but we need them to compile */
  #define LOG_EMERG	0
  #define LOG_ALERT	1
  #define LOG_CRIT	2
  #define LOG_ERR		3
  #define LOG_WARNING	4
  #define LOG_NOTICE	5
  #define LOG_INFO	6
  #define LOG_DEBUG	7
  
  #define LOG_DAEMON	OPC$M_NM_NTWORK
  #endif
  
  static int MS_CALLBACK slg_write(BIO *h, const char *buf, int num);
  static int MS_CALLBACK slg_puts(BIO *h, const char *str);
  static long MS_CALLBACK slg_ctrl(BIO *h, int cmd, long arg1, void *arg2);
  static int MS_CALLBACK slg_new(BIO *h);
  static int MS_CALLBACK slg_free(BIO *data);
  static void xopenlog(BIO* bp, char* name, int level);
  static void xsyslog(BIO* bp, int priority, const char* string);
  static void xcloselog(BIO* bp);
  
  static BIO_METHOD methods_slg=
  	{
  	BIO_TYPE_MEM,"syslog",
  	slg_write,
  	NULL,
  	slg_puts,
  	NULL,
  	slg_ctrl,
  	slg_new,
  	slg_free,
  	NULL,
  	};
  
  BIO_METHOD *BIO_s_log(void)
  	{
  	return(&methods_slg);
  	}
  
  static int MS_CALLBACK slg_new(BIO *bi)
  	{
  	bi->init=1;
  	bi->num=0;
  	bi->ptr=NULL;
  	xopenlog(bi, "application", LOG_DAEMON);
  	return(1);
  	}
  
  static int MS_CALLBACK slg_free(BIO *a)
  	{
  	if (a == NULL) return(0);
  	xcloselog(a);
  	return(1);
  	}
  	
  static int MS_CALLBACK slg_write(BIO *b, const char *in, int inl)
  	{
  	int ret= inl;
  	char* buf;
  	char* pp;
  	int priority, i;
  	static const struct
  		{
  		int strl;
  		char str[10];
  		int log_level;
  		}
  	mapping[] =
  		{
  		{ 6, "PANIC ", LOG_EMERG },
  		{ 6, "EMERG ", LOG_EMERG },
  		{ 4, "EMR ", LOG_EMERG },
  		{ 6, "ALERT ", LOG_ALERT },
  		{ 4, "ALR ", LOG_ALERT },
  		{ 5, "CRIT ", LOG_CRIT },
  		{ 4, "CRI ", LOG_CRIT },
  		{ 6, "ERROR ", LOG_ERR },
  		{ 4, "ERR ", LOG_ERR },
  		{ 8, "WARNING ", LOG_WARNING },
  		{ 5, "WARN ", LOG_WARNING },
  		{ 4, "WAR ", LOG_WARNING },
  		{ 7, "NOTICE ", LOG_NOTICE },
  		{ 5, "NOTE ", LOG_NOTICE },
  		{ 4, "NOT ", LOG_NOTICE },
  		{ 5, "INFO ", LOG_INFO },
  		{ 4, "INF ", LOG_INFO },
  		{ 6, "DEBUG ", LOG_DEBUG },
  		{ 4, "DBG ", LOG_DEBUG },
  		{ 0, "", LOG_ERR } /* The default */
  		};
  
  	if((buf= (char *)OPENSSL_malloc(inl+ 1)) == NULL){
  		return(0);
  	}
  	strncpy(buf, in, inl);
  	buf[inl]= '\0';
  
  	i = 0;
  	while(strncmp(buf, mapping[i].str, mapping[i].strl) != 0) i++;
  	priority = mapping[i].log_level;
  	pp = buf + mapping[i].strl;
  
  	xsyslog(b, priority, pp);
  
  	OPENSSL_free(buf);
  	return(ret);
  	}
  
  static long MS_CALLBACK slg_ctrl(BIO *b, int cmd, long num, void *ptr)
  	{
  	switch (cmd)
  		{
  	case BIO_CTRL_SET:
  		xcloselog(b);
  		xopenlog(b, ptr, num);
  		break;
  	default:
  		break;
  		}
  	return(0);
  	}
  
  static int MS_CALLBACK slg_puts(BIO *bp, const char *str)
  	{
  	int n,ret;
  
  	n=strlen(str);
  	ret=slg_write(bp,str,n);
  	return(ret);
  	}
  
  #if defined(OPENSSL_SYS_WIN32)
  
  static void xopenlog(BIO* bp, char* name, int level)
  {
  	if (GetVersion() < 0x80000000)
  		bp->ptr = RegisterEventSourceA(NULL,name);
  	else
  		bp->ptr = NULL;
  }
  
  static void xsyslog(BIO *bp, int priority, const char *string)
  {
  	LPCSTR lpszStrings[2];
  	WORD evtype= EVENTLOG_ERROR_TYPE;
  	char pidbuf[DECIMAL_SIZE(DWORD)+4];
  
  	if (bp->ptr == NULL)
  		return;
  
  	switch (priority)
  		{
  	case LOG_EMERG:
  	case LOG_ALERT:
  	case LOG_CRIT:
  	case LOG_ERR:
  		evtype = EVENTLOG_ERROR_TYPE;
  		break;
  	case LOG_WARNING:
  		evtype = EVENTLOG_WARNING_TYPE;
  		break;
  	case LOG_NOTICE:
  	case LOG_INFO:
  	case LOG_DEBUG:
  		evtype = EVENTLOG_INFORMATION_TYPE;
  		break;
  	default:		/* Should never happen, but set it
  				   as error anyway. */
  		evtype = EVENTLOG_ERROR_TYPE;
  		break;
  		}
  
  	sprintf(pidbuf, "[%u] ", GetCurrentProcessId());
  	lpszStrings[0] = pidbuf;
  	lpszStrings[1] = string;
  
  	ReportEventA(bp->ptr, evtype, 0, 1024, NULL, 2, 0,
  				lpszStrings, NULL);
  }
  	
  static void xcloselog(BIO* bp)
  {
  	if(bp->ptr)
  		DeregisterEventSource((HANDLE)(bp->ptr));
  	bp->ptr= NULL;
  }
  
  #elif defined(OPENSSL_SYS_VMS)
  
  static int VMS_OPC_target = LOG_DAEMON;
  
  static void xopenlog(BIO* bp, char* name, int level)
  {
  	VMS_OPC_target = level; 
  }
  
  static void xsyslog(BIO *bp, int priority, const char *string)
  {
  	struct dsc$descriptor_s opc_dsc;
  
  /* Arrange 32-bit pointer to opcdef buffer and malloc(), if needed. */
  #if __INITIAL_POINTER_SIZE == 64
  # pragma pointer_size save
  # pragma pointer_size 32
  # define OPCDEF_TYPE __char_ptr32
  # define OPCDEF_MALLOC _malloc32
  #else /* __INITIAL_POINTER_SIZE == 64 */
  # define OPCDEF_TYPE char *
  # define OPCDEF_MALLOC OPENSSL_malloc
  #endif /* __INITIAL_POINTER_SIZE == 64 [else] */
  
  	struct opcdef *opcdef_p;
  
  #if __INITIAL_POINTER_SIZE == 64
  # pragma pointer_size restore
  #endif /* __INITIAL_POINTER_SIZE == 64 */
  
  	char buf[10240];
  	unsigned int len;
          struct dsc$descriptor_s buf_dsc;
  	$DESCRIPTOR(fao_cmd, "!AZ: !AZ");
  	char *priority_tag;
  
  	switch (priority)
  	  {
  	  case LOG_EMERG: priority_tag = "Emergency"; break;
  	  case LOG_ALERT: priority_tag = "Alert"; break;
  	  case LOG_CRIT: priority_tag = "Critical"; break;
  	  case LOG_ERR: priority_tag = "Error"; break;
  	  case LOG_WARNING: priority_tag = "Warning"; break;
  	  case LOG_NOTICE: priority_tag = "Notice"; break;
  	  case LOG_INFO: priority_tag = "Info"; break;
  	  case LOG_DEBUG: priority_tag = "DEBUG"; break;
  	  }
  
  	buf_dsc.dsc$b_dtype = DSC$K_DTYPE_T;
  	buf_dsc.dsc$b_class = DSC$K_CLASS_S;
  	buf_dsc.dsc$a_pointer = buf;
  	buf_dsc.dsc$w_length = sizeof(buf) - 1;
  
  	lib$sys_fao(&fao_cmd, &len, &buf_dsc, priority_tag, string);
  
  	/* We know there's an 8-byte header.  That's documented. */
  	opcdef_p = OPCDEF_MALLOC( 8+ len);
  	opcdef_p->opc$b_ms_type = OPC$_RQ_RQST;
  	memcpy(opcdef_p->opc$z_ms_target_classes, &VMS_OPC_target, 3);
  	opcdef_p->opc$l_ms_rqstid = 0;
  	memcpy(&opcdef_p->opc$l_ms_text, buf, len);
  
  	opc_dsc.dsc$b_dtype = DSC$K_DTYPE_T;
  	opc_dsc.dsc$b_class = DSC$K_CLASS_S;
  	opc_dsc.dsc$a_pointer = (OPCDEF_TYPE) opcdef_p;
  	opc_dsc.dsc$w_length = len + 8;
  
  	sys$sndopr(opc_dsc, 0);
  
  	OPENSSL_free(opcdef_p);
  }
  
  static void xcloselog(BIO* bp)
  {
  }
  
  #else /* Unix/Watt32 */
  
  static void xopenlog(BIO* bp, char* name, int level)
  {
  #ifdef WATT32   /* djgpp/DOS */
  	openlog(name, LOG_PID|LOG_CONS|LOG_NDELAY, level);
  #else
  	openlog(name, LOG_PID|LOG_CONS, level);
  #endif
  }
  
  static void xsyslog(BIO *bp, int priority, const char *string)
  {
  	syslog(priority, "%s", string);
  }
  
  static void xcloselog(BIO* bp)
  {
  	closelog();
  }
  
  #endif /* Unix */
  
  #endif /* NO_SYSLOG */
  