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/*
http://www.unhide-forensics.info
*/
/*
Copyright © 2010-2024 Yago Jesus & Patrick Gouin
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <stdio.h>
#include <stdlib.h>
#include <stdarg.h>
#include <errno.h>
#ifdef __linux__
#include <linux/limits.h>
#else
#include <limits.h>
#endif
#include <string.h>
#include <time.h>
#include "unhide-output.h"
/*
* Print a message to a file stream (and log the message if necessary).
*/
void vfmsg(FILE * unlog, FILE* fp, const char* fmt, va_list ap)
{
char buf[BUFSIZ];
vsnprintf(buf, BUFSIZ, fmt, ap);
fputs(buf, fp);
fflush(fp) ;
// fputs(buf, stderr);
if (NULL != unlog)
fputs(buf, unlog);
}
/*
* Print a message to a stdout (and log the message if necessary), appending \n.
*/
void msgln(FILE * unlog, int indent, const char* fmt, ...)
{
char buf[BUFSIZ];
va_list ap;
if(1 == indent)
{
strncpy(buf, "\t", BUFSIZ-1);
strncat(buf, fmt, BUFSIZ-strlen(buf)-1);
}
else
{
strncpy(buf, fmt, BUFSIZ-1);
}
buf[BUFSIZ-1] = 0 ;
strncat(buf, "\n", BUFSIZ-1-strlen(buf));
va_start(ap, fmt);
vfmsg(unlog, stdout, buf, ap);
va_end(ap);
}
/*
* Print a warning message to a stderr (and log the message if necessary),
* appending \n, only if in verbose mode.
*
* If errno is not 0, then information about the last error is printed too.
*/
void warnln(int verbose, FILE * unlog, const char* fmt, ...)
{
char buf[BUFSIZ];
va_list ap;
int e = errno; /* save it in case some other function fails */
if (!verbose)
{
return;
}
strncpy(buf, "Warning : ", BUFSIZ);
strncat(buf, fmt, BUFSIZ-1-strlen(buf));
if (e != 0)
{
strncat(buf, " [", BUFSIZ-1-strlen(buf));
strncat(buf, strerror(e), BUFSIZ-1-strlen(buf));
strncat(buf, "]", BUFSIZ-1-strlen(buf));
}
strncat(buf, "\n", BUFSIZ-1-strlen(buf));
va_start(ap, fmt);
vfmsg(unlog, stderr, buf, ap);
va_end(ap);
}
/*
* Print an error to stderr and exit with code 1.
*
* If errno is not 0, then information about the last error is printed too.
*/
void die(FILE * unlog, const char* fmt, ...)
{
va_list ap;
char buf[BUFSIZ];
int e = errno; /* save it in case some other function fails */
strncpy(buf, "Error : ", BUFSIZ);
strncat(buf, fmt, BUFSIZ-1-strlen(buf));
if (e != 0)
{
strncat(buf, " [", BUFSIZ-1-strlen(buf));
strncat(buf, strerror(e), BUFSIZ-1-strlen(buf));
strncat(buf, "]", BUFSIZ-1-strlen(buf));
}
strncat(buf, "\n", BUFSIZ-1-strlen(buf));
va_start(ap, fmt);
vfmsg(unlog, stderr, buf, ap);
va_end(ap);
exit(1);
}
/*
* Initialize and write a header to the log file.
*/
FILE *init_log(int logtofile, const char *header, const char *basename, int hfriend)
{
FILE *fh ;
char filename[PATH_MAX] ;
time_t scantime;
struct tm *tmPtr;
char cad[80];
if (0 == logtofile)
{
return(NULL);
}
scantime = time(NULL);
tmPtr = localtime(&scantime);
sprintf(filename, "%s_%4d-%02d-%02d_%02dh%02dm%02ds.%s", basename, tmPtr->tm_year+1900, tmPtr->tm_mon + 1, tmPtr->tm_mday, tmPtr->tm_hour, tmPtr->tm_min, tmPtr->tm_sec, "log" );
fh = fopen(filename, "w");
if (NULL == fh)
{
logtofile = 0; // inhibit write to log file
warnln(1, NULL, "Unable to open log file (%s)!", filename) ;
return(NULL) ;
}
fputs(header, fh);
strftime( cad, 80, "%H:%M:%S, %F", tmPtr );
fprintf(fh, "\n%s scan starting at: %s\n", basename, cad) ;
if (hfriend != 0)
{
printf("\n%s scan starting at: %s\n", basename, cad) ;
}
fflush(stdout) ;
return(fh);
}
/* Write a footer and close the log file. */
void close_log(FILE *fh, const char *basename, int hfriend)
{
if (NULL == fh)
{
return ;
}
time_t scantime;
char cad[80];
struct tm *tmPtr;
scantime = time(NULL);
tmPtr = localtime(&scantime);
strftime( cad, 80, "%H:%M:%S, %F", tmPtr );
fprintf(fh, "%s scan ending at: %s\n", basename, cad );
if (hfriend != 0)
{
printf("%s scan ending at: %s\n", basename, cad );
}
fflush(stdout) ;
fclose(fh);
}
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