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deb-mbse/mbsetup/m_virus.c
Michiel Broek 5f06e6e421 Updated datafile security modes
2001-11-14 21:37:58 +00:00

437 lines
11 KiB
C
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/*****************************************************************************
*
* $Id$
* Purpose ...............: Setup Virus structure.
*
*****************************************************************************
* Copyright (C) 1997-2001
*
* Michiel Broek FIDO: 2:280/2802
* Beekmansbos 10
* 1971 BV IJmuiden
* the Netherlands
*
* This file is part of MBSE BBS.
*
* This BBS 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 2, or (at your option) any
* later version.
*
* MB BBS 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 MB BBS; see the file COPYING. If not, write to the Free
* Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
*****************************************************************************/
#include "../lib/libs.h"
#include "../lib/structs.h"
#include "../lib/records.h"
#include "../lib/clcomm.h"
#include "../lib/common.h"
#include "screen.h"
#include "mutil.h"
#include "ledit.h"
#include "stlist.h"
#include "m_global.h"
#include "m_virus.h"
int VirUpdated = 0;
/*
* Count nr of virscan records in the database.
* Creates the database if it doesn't exist.
*/
int CountVirus(void)
{
FILE *fil;
char ffile[PATH_MAX];
int count;
sprintf(ffile, "%s/etc/virscan.data", getenv("MBSE_ROOT"));
if ((fil = fopen(ffile, "r")) == NULL) {
if ((fil = fopen(ffile, "a+")) != NULL) {
Syslog('+', "Created new %s", ffile);
virscanhdr.hdrsize = sizeof(virscanhdr);
virscanhdr.recsize = sizeof(virscan);
fwrite(&virscanhdr, sizeof(virscanhdr), 1, fil);
/*
* Create some default records but don't enable them.
*/
memset(&virscan, 0, sizeof(virscan));
sprintf(virscan.comment, "AntiVir/Linux Scanner");
sprintf(virscan.scanner, "/usr/bin/antivir");
sprintf(virscan.options, "-allfiles -s -q");
fwrite(&virscan, sizeof(virscan), 1, fil);
memset(&virscan, 0, sizeof(virscan));
sprintf(virscan.comment, "F-Prot scanner");
sprintf(virscan.scanner, "/usr/local/bin/f-prot .");
sprintf(virscan.options, "-archive -silent");
fwrite(&virscan, sizeof(virscan), 1, fil);
memset(&virscan, 0, sizeof(virscan));
sprintf(virscan.comment, "McAfee VirusScan for Linux");
sprintf(virscan.scanner, "/usr/local/bin/uvscan");
sprintf(virscan.options, "--noboot --noexpire -r --secure -");
fwrite(&virscan, sizeof(virscan), 1, fil);
fclose(fil);
chmod(ffile, 0640);
return 3;
} else
return -1;
}
fread(&virscanhdr, sizeof(virscanhdr), 1, fil);
fseek(fil, 0, SEEK_END);
count = (ftell(fil) - virscanhdr.hdrsize) / virscanhdr.recsize;
fclose(fil);
return count;
}
/*
* Open database for editing. The datafile is copied, if the format
* is changed it will be converted on the fly. All editing must be
* done on the copied file.
*/
int OpenVirus(void);
int OpenVirus(void)
{
FILE *fin, *fout;
char fnin[PATH_MAX], fnout[PATH_MAX];
long oldsize;
sprintf(fnin, "%s/etc/virscan.data", getenv("MBSE_ROOT"));
sprintf(fnout, "%s/etc/virscan.temp", getenv("MBSE_ROOT"));
if ((fin = fopen(fnin, "r")) != NULL) {
if ((fout = fopen(fnout, "w")) != NULL) {
fread(&virscanhdr, sizeof(virscanhdr), 1, fin);
/*
* In case we are automatic upgrading the data format
* we save the old format. If it is changed, the
* database must always be updated.
*/
oldsize = virscanhdr.recsize;
if (oldsize != sizeof(virscan)) {
VirUpdated = 1;
Syslog('+', "Upgraded %s, format changed", fnin);
} else
VirUpdated = 0;
virscanhdr.hdrsize = sizeof(virscanhdr);
virscanhdr.recsize = sizeof(virscan);
fwrite(&virscanhdr, sizeof(virscanhdr), 1, fout);
/*
* The datarecord is filled with zero's before each
* read, so if the format changed, the new fields
* will be empty.
*/
memset(&virscan, 0, sizeof(virscan));
while (fread(&virscan, oldsize, 1, fin) == 1) {
fwrite(&virscan, sizeof(virscan), 1, fout);
memset(&virscan, 0, sizeof(virscan));
}
fclose(fin);
fclose(fout);
return 0;
} else
return -1;
}
return -1;
}
void CloseVirus(int);
void CloseVirus(int force)
{
char fin[PATH_MAX], fout[PATH_MAX];
FILE *fi, *fo;
st_list *vir = NULL, *tmp;
sprintf(fin, "%s/etc/virscan.data", getenv("MBSE_ROOT"));
sprintf(fout,"%s/etc/virscan.temp", getenv("MBSE_ROOT"));
if (VirUpdated == 1) {
if (force || (yes_no((char *)"Database is changed, save changes") == 1)) {
working(1, 0, 0);
fi = fopen(fout, "r");
fo = fopen(fin, "w");
fread(&virscanhdr, virscanhdr.hdrsize, 1, fi);
fwrite(&virscanhdr, virscanhdr.hdrsize, 1, fo);
while (fread(&virscan, virscanhdr.recsize, 1, fi) == 1)
if (!virscan.deleted)
fill_stlist(&vir, virscan.comment, ftell(fi) - virscanhdr.recsize);
sort_stlist(&vir);
for (tmp = vir; tmp; tmp = tmp->next) {
fseek(fi, tmp->pos, SEEK_SET);
fread(&virscan, virscanhdr.recsize, 1, fi);
fwrite(&virscan, virscanhdr.recsize, 1, fo);
}
tidy_stlist(&vir);
fclose(fi);
fclose(fo);
unlink(fout);
chmod(fin, 0640);
Syslog('+', "Updated \"virscan.data\"");
return;
}
}
working(1, 0, 0);
unlink(fout);
}
int AppendVirus(void)
{
FILE *fil;
char ffile[PATH_MAX];
sprintf(ffile, "%s/etc/virscan.temp", getenv("MBSE_ROOT"));
if ((fil = fopen(ffile, "a")) != NULL) {
memset(&virscan, 0, sizeof(virscan));
fwrite(&virscan, sizeof(virscan), 1, fil);
fclose(fil);
VirUpdated = 1;
return 0;
} else
return -1;
}
/*
* Edit one record, return -1 if there are errors, 0 if ok.
*/
int EditVirRec(int Area)
{
FILE *fil;
char mfile[PATH_MAX];
long offset;
int j;
unsigned long crc, crc1;
clr_index();
working(1, 0, 0);
IsDoing("Edit VirScan");
sprintf(mfile, "%s/etc/virscan.temp", getenv("MBSE_ROOT"));
if ((fil = fopen(mfile, "r")) == NULL) {
working(2, 0, 0);
return -1;
}
offset = sizeof(virscanhdr) + ((Area -1) * sizeof(virscan));
if (fseek(fil, offset, 0) != 0) {
working(2, 0, 0);
return -1;
}
fread(&virscan, sizeof(virscan), 1, fil);
fclose(fil);
crc = 0xffffffff;
crc = upd_crc32((char *)&virscan, crc, sizeof(virscan));
working(0, 0, 0);
set_color(WHITE, BLACK);
mvprintw( 5, 2, "4. EDIT VIRUS SCANNER");
set_color(CYAN, BLACK);
mvprintw( 7, 2, "1. Comment");
mvprintw( 8, 2, "2. Command");
mvprintw( 9, 2, "3. Options");
mvprintw(10, 2, "4. Available");
mvprintw(11, 2, "5. Deleted");
mvprintw(12, 2, "6. Error lvl");
for (;;) {
set_color(WHITE, BLACK);
show_str( 7,16,40, virscan.comment);
show_str( 8,16,64, virscan.scanner);
show_str( 9,16,64, virscan.options);
show_bool(10,16, virscan.available);
show_bool(11,16, virscan.deleted);
show_int( 12,16, virscan.error);
j = select_menu(6);
switch(j) {
case 0: crc1 = 0xffffffff;
crc1 = upd_crc32((char *)&virscan, crc1, sizeof(virscan));
if (crc != crc1) {
if (yes_no((char *)"Record is changed, save") == 1) {
working(1, 0, 0);
if ((fil = fopen(mfile, "r+")) == NULL) {
working(2, 0, 0);
return -1;
}
fseek(fil, offset, 0);
fwrite(&virscan, sizeof(virscan), 1, fil);
fclose(fil);
VirUpdated = 1;
working(0, 0, 0);
}
}
IsDoing("Browsing Menu");
return 0;
case 1: E_STR( 7,16,40,virscan.comment, "The ^Comment^ for this record")
case 2: E_STR( 8,16,64,virscan.scanner, "The full ^name and path^ to the binary of this scanner")
case 3: E_STR( 9,16,64,virscan.options, "The ^commandline options^ for this scanner")
case 4: E_BOOL(10,16, virscan.available,"Switch if this virus scanner is ^Available^ for use.")
case 5: E_BOOL(11,16, virscan.deleted, "Is this scanner ^deleted^")
case 6: E_INT( 12,16, virscan.error, "The ^Error Level^ the scanner returns when no virus is found")
}
}
return 0;
}
void EditVirus(void)
{
int records, i, x, y;
char pick[12];
FILE *fil;
char temp[PATH_MAX];
long offset;
clr_index();
working(1, 0, 0);
IsDoing("Browsing Menu");
if (config_read() == -1) {
working(2, 0, 0);
return;
}
records = CountVirus();
if (records == -1) {
working(2, 0, 0);
return;
}
if (OpenVirus() == -1) {
working(2, 0, 0);
return;
}
working(0, 0, 0);
for (;;) {
clr_index();
set_color(WHITE, BLACK);
mvprintw( 5, 4, "4. VIRUS SCANNERS SETUP");
set_color(CYAN, BLACK);
if (records != 0) {
sprintf(temp, "%s/etc/virscan.temp", getenv("MBSE_ROOT"));
if ((fil = fopen(temp, "r")) != NULL) {
fread(&virscanhdr, sizeof(virscanhdr), 1, fil);
x = 2;
y = 7;
set_color(CYAN, BLACK);
for (i = 1; i <= records; i++) {
offset = sizeof(virscanhdr) + ((i - 1) * virscanhdr.recsize);
fseek(fil, offset, 0);
fread(&virscan, virscanhdr.recsize, 1, fil);
if (i == 11) {
x = 42;
y = 7;
}
if (virscan.available)
set_color(CYAN, BLACK);
else
set_color(LIGHTBLUE, BLACK);
sprintf(temp, "%3d. %-32s", i, virscan.comment);
temp[37] = 0;
mvprintw(y, x, temp);
y++;
}
fclose(fil);
}
}
strcpy(pick, select_record(records, 20));
if (strncmp(pick, "-", 1) == 0) {
CloseVirus(FALSE);
return;
}
if (strncmp(pick, "A", 1) == 0) {
working(1, 0, 0);
if (AppendVirus() == 0) {
records++;
working(3, 0, 0);
} else
working(2, 0, 0);
working(0, 0, 0);
}
if ((atoi(pick) >= 1) && (atoi(pick) <= records))
EditVirRec(atoi(pick));
}
}
void InitVirus(void)
{
CountVirus();
OpenVirus();
CloseVirus(TRUE);
}
int virus_doc(FILE *fp, FILE *toc, int page)
{
char temp[PATH_MAX];
FILE *vir;
int j;
sprintf(temp, "%s/etc/virscan.data", getenv("MBSE_ROOT"));
if ((vir = fopen(temp, "r")) == NULL)
return page;
page = newpage(fp, page);
addtoc(fp, toc, 4, 0, page, (char *)"Virus scanners");
j = 0;
fprintf(fp, "\n\n");
fread(&virscanhdr, sizeof(virscanhdr), 1, vir);
while ((fread(&virscan, virscanhdr.recsize, 1, vir)) == 1) {
if (j == 5) {
page = newpage(fp, page);
fprintf(fp, "\n");
j = 0;
}
fprintf(fp, " Scanner name %s\n", virscan.comment);
fprintf(fp, " Command line %s\n", virscan.scanner);
fprintf(fp, " Options %s\n", virscan.options);
fprintf(fp, " Available %s\n", getboolean(virscan.available));
fprintf(fp, " Errorlevel OK %d\n", virscan.error);
fprintf(fp, "\n\n\n");
j++;
}
fclose(vir);
return page;
}
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