EnbanFukusyaYa/DriveAccess/log.c

/**
 * @file log.c
 * @brief ログ関係
 * @author BananaJinn
 * @version $Id: log.c,v 1.4 2010/01/17 09:26:25 bananajinn Exp $
 * 円盤複写屋
 * Copyright (C) 2004-2006 BananaJinn<banana@mxh.mesh.ne.jp>.
 */

#include <stdio.h>
#include <string.h>
#include <stdarg.h>
#if defined(WIN32)
# include <io.h>
#else
# include <pwd.h>
# include <unistd.h>
#endif
#ifdef linux
# include <fcntl.h>
#endif
#include <time.h>
#include "aspi.h"

#if defined(WIN32)
# define vsnprintf _vsnprintf
#endif

#if defined(WIN32)
# define FILENAME "\\enban-debug.log"
#else
# define FILENAME "/enban-debug.log"
#endif

static char *GetDebugLogPath()
{
        static char path[_MAX_PATH]="";
#if !defined(WIN32)
        struct passwd *pwent;
#endif

        if(strlen(path)==0){
#if defined(WIN32)
                GetCurrentDirectory(sizeof(path), path);
#else
                pwent = getpwuid(getuid());
                strncpy(path, pwent->pw_dir, sizeof(path));
                path[sizeof(path)-1] = '\0';
#endif
                if(strlen(path)+strlen(FILENAME)+1 >= sizeof(path)){
                        return NULL;
                }
                strcat(path, FILENAME);
        }
        return path;
}

static FILE *OpenDebugFile()
{
        const char *fname = GetDebugLogPath();
        if(fname == NULL){
                return NULL;
        }
        return fopen(fname, "a");
}

void DebugLog(char *fmt, ...)
{
#ifdef DEBUGLOG
        va_list args;
        char str[512];
        time_t now;
        FILE *fp = OpenDebugFile();

        if(fp == NULL){
                return;
        }
        time(&now);
        strftime(str, sizeof(str)-1, "%Y/%m/%d %H:%M:%S : ", localtime(&now));
        fputs(str, fp);
        
        va_start(args, fmt);
        vsnprintf(str, sizeof(str), fmt, args);
        
        fputs(str, fp);
        fclose(fp);
#endif
}

void DebugDump(void *ptr, size_t size, const char *message)
{
        size_t index, index16;
        unsigned char *bytep = (unsigned char *)ptr;
        FILE *fp = OpenDebugFile();

        if(fp == NULL){
                return;
        }

        if(message != NULL){
                DebugLog("%s\n", message);
        }
        for(index=0; index<size; index++){
                index16 = index & 15;
                if(index16 == 0){
                        fprintf(fp, "0x%08lX ", (long)(bytep+index));
                }
                else if(index16 == 8){
                        fputs(" ", fp);
                }
                fprintf(fp, "%02X ", bytep[index]);
                if(index16 == 15){
                        fputs("\n", fp);
                }
        }

        index16 = index & 15;
        if(index16 != 0){
                fputs("\n", fp);
        }
        fclose(fp);
}