slpd_log.c

SLP协议在linux下的实现。此版本为1.2.1版。官方网站为www.openslp.org

/***************************************************************************/
/*                                                                         */
/* Project:     OpenSLP - OpenSource implementation of Service Location    */
/*              Protocol Version 2                                         */
/*                                                                         */
/* File:        slpd_log.c                                                 */
/*                                                                         */
/* Abstract:    slpd logging functions                                     */
/*                                                                         */
/* WARNING:     NOT thread safe!                                           */
/*                                                                         */
/*-------------------------------------------------------------------------*/
/*                                                                         */
/*     Please submit patches to http://www.openslp.org                     */
/*                                                                         */
/*-------------------------------------------------------------------------*/
/*                                                                         */
/* Copyright (C) 2000 Caldera Systems, Inc                                 */
/* All rights reserved.                                                    */
/*                                                                         */
/* Redistribution and use in source and binary forms, with or without      */
/* modification, are permitted provided that the following conditions are  */
/* met:                                                                    */ 
/*                                                                         */
/*      Redistributions of source code must retain the above copyright     */
/*      notice, this list of conditions and the following disclaimer.      */
/*                                                                         */
/*      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.                                                      */
/*                                                                         */
/*      Neither the name of Caldera Systems nor the names of its           */
/*      contributors may be used to endorse or promote products derived    */
/*      from this software without specific prior written permission.      */
/*                                                                         */
/* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS     */
/* `AS IS'' AND ANY EXPRESS 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 CALDERA      */
/* SYSTEMS OR 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.    */
/*                                                                         */
/***************************************************************************/

/*=========================================================================*/
/* slpd includes                                                           */
/*=========================================================================*/
#include "slpd_log.h"
#include "slpd_property.h"

#include <time.h>

/********************************************/
/* TODO: Make these functions thread safe!! */
/********************************************/

/*=========================================================================*/
static FILE*   G_SlpdLogFile    = 0;
/*=========================================================================*/


/*=========================================================================*/
int SLPDLogFileOpen(const char* path, int append)                           
/* Prepares the file at the specified path as the log file.                */
/*                                                                         */
/* path     - (IN) the path to the log file. If path is the empty string   */
/*            (""), then we log to stdout.                                 */
/*                                                                         */
/* append   - (IN) if zero log file will be truncated.                     */
/*                                                                         */
/* Returns  - zero on success. errno on failure.                           */
/*=========================================================================*/
{
    if (G_SlpdLogFile)
    {
        /* logfile was already open close it */
        fclose(G_SlpdLogFile);
    }

    if (*path == 0)
    {
        /* Log to console. */
        G_SlpdLogFile = stdout;
    }
    else
    {
        /* Log to file. */
#ifndef _WIN32


        /* only owner can read/write */
        umask(0077); 
#endif        
        if (append)
        {
            G_SlpdLogFile = fopen(path,"a");
        }
        else
        {
            G_SlpdLogFile = fopen(path,"w");
        }

        if (G_SlpdLogFile == 0)
        {
            /* could not open the log file */
            return -1;
        }
    }

    return 0;
}

#ifdef DEBUG
/*=========================================================================*/
int SLPDLogFileClose()
/* Releases resources associated with the log file                         */
/*=========================================================================*/
{
    fclose(G_SlpdLogFile);

    return 0;
}
#endif


/*=========================================================================*/
void SLPDLog(const char* msg, ...)
/* Logs a message                                                          */
/*=========================================================================*/
{
    va_list ap;

    if (G_SlpdLogFile)
    {
        va_start(ap,msg);
        vfprintf(G_SlpdLogFile,msg,ap); 
        va_end(ap);
        fflush(G_SlpdLogFile);
    }
}

/*=========================================================================*/
void SLPDFatal(const char* msg, ...)
/* Logs a message and halts the process                                    */
/*=========================================================================*/
{
    va_list ap;

    if (G_SlpdLogFile)
    {
        fprintf(G_SlpdLogFile,"A FATAL Error has occured:\n");
        va_start(ap,msg);
        vfprintf(G_SlpdLogFile,msg,ap);
        va_end(ap);
        fflush(G_SlpdLogFile);
    }
    else
    {
        fprintf(stderr,"A FATAL Error has occured:\n");
        va_start(ap,msg);
        vprintf(msg,ap);
        va_end(ap);
    }

    exit(1);
}

/*=========================================================================*/
void SLPDLogBuffer(const char* prefix, int bufsize, const char* buf)
/* Writes a buffer to the logfile                                          */
/*=========================================================================*/
{
    if (G_SlpdLogFile)
    {
        fprintf(G_SlpdLogFile,"%s",prefix);
        fwrite(buf,bufsize,1,G_SlpdLogFile);
        fprintf(G_SlpdLogFile,"\n");
        fflush(G_SlpdLogFile);
    }
}



/*=========================================================================*/
void SLPDLogTime()
/* Logs a timestamp                                                        */
/*=========================================================================*/
{
    time_t curtime = time(NULL);
    SLPDLog("%s",ctime(&curtime)); 
}


/*-------------------------------------------------------------------------*/
void SLPDLogSrvRqstMessage(SLPSrvRqst* srvrqst)
/*-------------------------------------------------------------------------*/
{
    SLPDLog("Message SRVRQST:\n");
    SLPDLogBuffer("   srvtype = ", srvrqst->srvtypelen, srvrqst->srvtype);
    SLPDLogBuffer("   scopelist = ", srvrqst->scopelistlen, srvrqst->scopelist);
    SLPDLogBuffer("   predicate = ", srvrqst->predicatelen, srvrqst->predicate);
}

/*-------------------------------------------------------------------------*/
void SLPDLogSrvRplyMessage(SLPSrvRply* srvrply)
/*-------------------------------------------------------------------------*/
{
    SLPDLog("Message SRVRPLY:\n");
    SLPDLog("   errorcode = %i\n",srvrply->errorcode);
}

/*-------------------------------------------------------------------------*/
void SLPDLogSrvRegMessage(SLPSrvReg* srvreg)
/*-------------------------------------------------------------------------*/
{
    SLPDLog("Message SRVREG:\n");
    SLPDLogBuffer("   srvtype = ", srvreg->srvtypelen, srvreg->srvtype);
    SLPDLogBuffer("   scope = ", srvreg->scopelistlen, srvreg->scopelist);
    SLPDLogBuffer("   url = ", srvreg->urlentry.urllen, srvreg->urlentry.url);
    SLPDLogBuffer("   attributes = ", srvreg->attrlistlen, srvreg->attrlist);
}

/*-------------------------------------------------------------------------*/
void SLPDLogSrvDeRegMessage(SLPSrvDeReg* srvdereg)
/*-------------------------------------------------------------------------*/
{
    SLPDLog("Message SRVDEREG:\n");
    SLPDLogBuffer("   scope = ", srvdereg->scopelistlen, srvdereg->scopelist);
    SLPDLogBuffer("   url = ", srvdereg->urlentry.urllen, srvdereg->urlentry.url);
}

/*-------------------------------------------------------------------------*/
void SLPDLogSrvAckMessage(SLPSrvAck* srvack)
/*-------------------------------------------------------------------------*/
{
    SLPDLog("Message SRVACK:\n");
    SLPDLog("   errorcode = %i\n",srvack->errorcode);
}

/*-------------------------------------------------------------------------*/
void SLPDLogAttrRqstMessage(SLPAttrRqst* attrrqst)
/*-------------------------------------------------------------------------*/
{
    SLPDLog("Message ATTRRQST:\n");
    SLPDLogBuffer("   scope = ", attrrqst->scopelistlen, attrrqst->scopelist);
    SLPDLogBuffer("   url = ", attrrqst->urllen, attrrqst->url);
}

/*-------------------------------------------------------------------------*/
void SLPDLogAttrRplyMessage(SLPAttrRply* attrrply)
/*-------------------------------------------------------------------------*/
{
    SLPDLog("Message ATTRRPLY:\n");
    SLPDLog("   errorcode = %i\n",attrrply->errorcode);
} 

/*-------------------------------------------------------------------------*/
void SLPDLogDAAdvertMessage(SLPDAAdvert* daadvert)
/*-------------------------------------------------------------------------*/
{
    SLPDLog("Message DAADVERT:\n");
    SLPDLogBuffer("   scope = ", daadvert->scopelistlen, daadvert->scopelist);
    SLPDLogBuffer("   url = ", daadvert->urllen, daadvert->url);
    SLPDLogBuffer("   attributes = ", daadvert->attrlistlen, daadvert->attrlist);
}

/*-------------------------------------------------------------------------*/
void SLPDLogSrvTypeRqstMessage(SLPSrvTypeRqst* srvtyperqst)
/*-------------------------------------------------------------------------*/
{
    SLPDLog("Message SRVTYPERQST:\n");
    SLPDLogBuffer("   namingauth = ", srvtyperqst->namingauthlen, srvtyperqst->namingauth);
    SLPDLogBuffer("   scope = ", srvtyperqst->scopelistlen, srvtyperqst->scopelist);
}

/*-------------------------------------------------------------------------*/
void SLPDLogSrvTypeRplyMessage(SLPSrvTypeRply* srvtyperply)
/*-------------------------------------------------------------------------*/ 
{
    SLPDLog("Message SRVTYPERPLY:\n");
    SLPDLog("   errorcode = %i\n",srvtyperply->errorcode);
}        

/*-------------------------------------------------------------------------*/
void SLPDLogSAAdvertMessage(SLPSAAdvert* saadvert)
/*-------------------------------------------------------------------------*/
{
    SLPDLog("Message SAADVERT:\n");