450 lines
13 KiB
C
450 lines
13 KiB
C
/*****************************************************************************
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*
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* $Id$
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* Purpose: File Database Maintenance - Check filebase
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*
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*****************************************************************************
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* Copyright (C) 1997-2004
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*
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* Michiel Broek FIDO: 2:280/2802
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* Beekmansbos 10
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* 1971 BV IJmuiden
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* the Netherlands
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*
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* This file is part of MBSE BBS.
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*
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* This BBS is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2, or (at your option) any
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* later version.
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*
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* MBSE BBS is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with MBSE BBS; see the file COPYING. If not, write to the Free
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* Software Foundation, 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
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*****************************************************************************/
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#include "../config.h"
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#include "../lib/mbselib.h"
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#include "../lib/users.h"
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#include "../lib/mbsedb.h"
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#include "mbfutil.h"
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#include "mbfcheck.h"
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extern int do_quiet; /* Suppress screen output */
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extern int do_pack; /* Pack filebase */
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/*
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* Check file database integrity, all files in the file database must
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* exist in real, the size and date/time must match, the files crc is
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* checked, and if anything is wrong, the file database is updated.
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* If the file is missing the entry is marked as deleted. With the
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* pack option that record will be removed.
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* After these checks, de database is checked for missing records, if
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* there are files on disk but not in the directory these files are
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* deleted. System files (beginning with a dot) are left alone and
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* the files 'files.bbs', 'files.bak', '00index', 'header' 'readme'
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* and 'index.html' too.
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*
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* Remarks: Maybe if the crc check fails, and the date and time are
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* ok, the file is damaged and must be made unavailable.
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*/
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void Check(void)
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{
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FILE *pAreas, *pFile;
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int i, j, iAreas, iAreasNew = 0, Fix, inArea, iTotal = 0, iErrors = 0;
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char *sAreas, *fAreas, *newdir, *temp, *mname, *tname;
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DIR *dp;
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struct dirent *de;
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int Found, Update;
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char fn[PATH_MAX];
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struct stat stb;
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struct passwd *pw;
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struct group *gr;
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sAreas = calloc(PATH_MAX, sizeof(char));
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fAreas = calloc(PATH_MAX, sizeof(char));
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newdir = calloc(PATH_MAX, sizeof(char));
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temp = calloc(PATH_MAX, sizeof(char));
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mname = calloc(PATH_MAX, sizeof(char));
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if (!do_quiet) {
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colour(3, 0);
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printf("Checking file database...\n");
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}
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sprintf(sAreas, "%s/etc/fareas.data", getenv("MBSE_ROOT"));
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if ((pAreas = fopen (sAreas, "r")) == NULL) {
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WriteError("Can't open %s", sAreas);
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die(MBERR_INIT_ERROR);
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}
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fread(&areahdr, sizeof(areahdr), 1, pAreas);
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fseek(pAreas, 0, SEEK_END);
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iAreas = (ftell(pAreas) - areahdr.hdrsize) / areahdr.recsize;
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for (i = 1; i <= iAreas; i++) {
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fseek(pAreas, ((i-1) * areahdr.recsize) + areahdr.hdrsize, SEEK_SET);
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fread(&area, areahdr.recsize, 1, pAreas);
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if (area.Available) {
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IsDoing("Check area %d", i);
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if (!do_quiet) {
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printf("\r%4d => %-44s \b\b\b\b", i, area.Name);
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fflush(stdout);
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}
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/*
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* Check if download directory exists,
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* if not, create the directory.
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*/
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if (access(area.Path, R_OK) == -1) {
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Syslog('!', "No dir: %s", area.Path);
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sprintf(newdir, "%s/foobar", area.Path);
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mkdirs(newdir, 0775);
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}
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if (stat(area.Path, &stb) == 0) {
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/*
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* Very extended directory check
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*/
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Fix = FALSE;
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if ((stb.st_mode & S_IRUSR) == 0) {
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Fix = TRUE;
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WriteError("No owner read access in %s, mode is %04o", area.Path, stb.st_mode & 0x1ff);
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}
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if ((stb.st_mode & S_IWUSR) == 0) {
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Fix = TRUE;
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WriteError("No owner write access in %s, mode is %04o", area.Path, stb.st_mode & 0x1ff);
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}
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if ((stb.st_mode & S_IRGRP) == 0) {
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Fix = TRUE;
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WriteError("No group read access in %s, mode is %04o", area.Path, stb.st_mode & 0x1ff);
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}
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if ((stb.st_mode & S_IWGRP) == 0) {
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Fix = TRUE;
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WriteError("No group write access in %s, mode is %04o", area.Path, stb.st_mode & 0x1ff);
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}
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if ((stb.st_mode & S_IROTH) == 0) {
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Fix = TRUE;
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WriteError("No others read access in %s, mode is %04o", area.Path, stb.st_mode & 0x1ff);
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}
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if (Fix) {
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iErrors++;
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if (chmod(area.Path, 0775))
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WriteError("Could not set mode to 0775");
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else
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Syslog('+', "Corrected directory mode to 0775");
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}
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Fix = FALSE;
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pw = getpwuid(stb.st_uid);
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if (strcmp(pw->pw_name, (char *)"mbse")) {
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WriteError("Directory %s not owned by user mbse", area.Path);
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Fix = TRUE;
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}
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gr = getgrgid(stb.st_gid);
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if (strcmp(gr->gr_name, (char *)"bbs")) {
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WriteError("Directory %s not owned by group bbs", area.Path);
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Fix = TRUE;
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}
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if (Fix) {
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iErrors++;
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pw = getpwnam((char *)"mbse");
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gr = getgrnam((char *)"bbs");
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if (chown(area.Path, pw->pw_gid, gr->gr_gid))
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WriteError("Could not set owner to mbse.bbs");
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else
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Syslog('+', "Corrected directory owner to mbse.bbs");
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}
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} else {
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WriteError("Can't stat %s", area.Path);
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}
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sprintf(fAreas, "%s/fdb/fdb%d.data", getenv("MBSE_ROOT"), i);
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/*
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* Open the file database, if it doesn't exist,
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* create an empty one.
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*/
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if ((pFile = fopen(fAreas, "r+")) == NULL) {
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Syslog('!', "Creating new %s", fAreas);
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if ((pFile = fopen(fAreas, "a+")) == NULL) {
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WriteError("$Can't create %s", fAreas);
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die(MBERR_GENERAL);
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}
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}
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/*
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* Now start checking the files in the filedatabase
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* against the contents of the directory.
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*/
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inArea = 0;
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while (fread(&file, sizeof(file), 1, pFile) == 1) {
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iTotal++;
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inArea++;
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sprintf(newdir, "%s/%s", area.Path, file.LName);
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sprintf(mname, "%s/%s", area.Path, file.Name);
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if (file_exist(newdir, R_OK) && file_exist(mname, R_OK)) {
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Syslog('+', "File %s area %d not on disk.", newdir, i);
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if (!file.NoKill) {
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file.Deleted = TRUE;
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do_pack = TRUE;
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}
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iErrors++;
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file.Missing = TRUE;
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fseek(pFile, - sizeof(file), SEEK_CUR);
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fwrite(&file, sizeof(file), 1, pFile);
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} else {
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/*
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* File exists, now check the file.
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*/
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Marker();
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Update = FALSE;
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strcpy(temp, file.LName);
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name_mangle(temp);
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sprintf(mname, "%s/%s", area.Path, temp);
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if (strcmp(file.Name, temp)) {
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Syslog('!', "Converted %s to %s", file.Name, temp);
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tname = calloc(PATH_MAX, sizeof(char));
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sprintf(tname, "%s/%s", area.Path, file.Name);
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rename(tname, mname);
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free(tname);
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strncpy(file.Name, temp, 12);
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iErrors++;
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Update = TRUE;
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}
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/*
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* If 8.3 and LFN are the same, try to rename the LFN to lowercase.
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*/
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if (strcmp(file.Name, file.LName) == 0) {
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/*
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* 8.3 and LFN are the same.
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*/
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tname = calloc(PATH_MAX, sizeof(char));
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sprintf(tname, "%s/%s", area.Path, file.LName);
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for (j = 0; j < strlen(file.LName); j++)
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file.LName[j] = tolower(file.LName[j]);
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sprintf(newdir, "%s/%s", area.Path, file.LName);
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if (strcmp(tname, newdir)) {
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Syslog('+', "Rename LFN from %s to %s", file.Name, file.LName);
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rename(tname, newdir);
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Update = TRUE;
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}
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free(tname);
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}
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/*
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* At this point we may have (depending on the upgrade level)
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* a real file with a long name or a real file with a short name
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* or both. One of them may also be a symbolic link or not exist
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* at all. Whatever it was, make it good.
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*/
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if ((lstat(newdir, &stb) == 0) && ((stb.st_mode & S_IFLNK) != S_IFLNK)) {
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/*
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* Long filename is a regular file and not a symbolic link.
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*/
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if (lstat(mname, &stb) == 0) {
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/*
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* 8.3 name exists, is it a real file?
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*/
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if ((stb.st_mode & S_IFLNK) != S_IFLNK) {
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unlink(newdir);
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symlink(mname, newdir);
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Syslog('+', "%s changed into symbolic link", newdir);
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iErrors++;
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} else {
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/*
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* 8.3 is a symbolic link.
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*/
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unlink(mname);
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rename(newdir, mname);
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symlink(mname, newdir);
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Syslog('+', "%s changed to real file", mname);
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iErrors++;
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}
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} else {
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/*
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* No 8.3 name on disk.
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*/
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rename(newdir, mname);
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symlink(mname, newdir);
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Syslog('+', "%s changed to real file and created symbolic link", mname);
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iErrors++;
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}
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} else if ((lstat(mname, &stb) == 0) && ((stb.st_mode & S_IFLNK) != S_IFLNK)) {
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/*
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* Short filename is a real file.
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*/
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if (lstat(newdir, &stb) == 0) {
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/*
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* LFN exists, is it a real file?
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*/
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if ((stb.st_mode & S_IFLNK) != S_IFLNK) {
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/*
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* LFN is a real filename too.
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*/
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unlink(newdir);
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symlink(mname, newdir);
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Syslog('+', "%s changed into symbolic link", newdir);
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iErrors++;
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}
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} else {
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/*
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* No LFN, create symbolic link
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*/
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symlink(mname, newdir);
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Syslog('+', "%s created symbolic link", newdir);
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iErrors++;
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}
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} else {
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/*
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* Weird, could not happen
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*/
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Syslog('!', "Weird problem, %s is no regular file", newdir);
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}
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/*
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* It could be that there is a thumbnail made of the LFN.
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*/
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tname = calloc(PATH_MAX, sizeof(char));
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sprintf(tname, "%s/.%s", area.Path, file.LName);
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if (file_exist(tname, R_OK) == 0) {
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Syslog('+', "Removing thumbnail %s", tname);
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iErrors++;
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unlink(tname);
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}
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free(tname);
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if (file_time(newdir) != file.FileDate) {
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Syslog('!', "Date mismatch area %d file %s", i, file.LName);
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file.FileDate = file_time(newdir);
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iErrors++;
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Update = TRUE;
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}
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if (file_size(newdir) != file.Size) {
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Syslog('!', "Size mismatch area %d file %s", i, file.LName);
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file.Size = file_size(newdir);
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iErrors++;
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Update = TRUE;
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}
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if (file_crc(newdir, CFG.slow_util && do_quiet) != file.Crc32) {
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Syslog('!', "CRC error area %d, file %s", i, file.LName);
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file.Crc32 = file_crc(newdir, CFG.slow_util && do_quiet);
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iErrors++;
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Update = TRUE;
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}
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Marker();
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if (Update) {
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fseek(pFile, - sizeof(file), SEEK_CUR);
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fwrite(&file, sizeof(file), 1, pFile);
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}
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}
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}
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if (inArea == 0)
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Syslog('+', "Warning: area %d (%s) is empty", i, area.Name);
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/*
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* Check files in the directory against the database.
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* This test is skipped for CD-rom.
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*/
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if (!area.CDrom) {
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if ((dp = opendir(area.Path)) != NULL) {
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while ((de = readdir(dp)) != NULL) {
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if (de->d_name[0] != '.') {
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Marker();
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Found = FALSE;
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rewind(pFile);
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while (fread(&file, sizeof(file), 1, pFile) == 1) {
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if ((strcmp(file.LName, de->d_name) == 0) || (strcmp(file.Name, de->d_name) == 0)) {
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if (!Found) {
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Found = TRUE;
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} else {
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/*
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* Record has been found before, so this must be
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* a double record.
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*/
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Syslog('!', "Double file record area %d file %s", i, file.LName);
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iErrors++;
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file.Double = TRUE;
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do_pack = TRUE;
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fseek(pFile, - sizeof(file), SEEK_CUR);
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fwrite(&file, sizeof(file), 1, pFile);
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}
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}
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}
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if ((!Found) && (strncmp(de->d_name, "files.bbs", 9)) &&
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(strncmp(de->d_name, "files.bak", 9)) &&
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(strncmp(de->d_name, "00index", 7)) &&
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(strncmp(de->d_name, "header", 6)) &&
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(strncmp(de->d_name, "index", 5)) &&
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(strncmp(de->d_name, "readme", 6))) {
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sprintf(fn, "%s/%s", area.Path, de->d_name);
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if (stat(fn, &stb) == 0)
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if (S_ISREG(stb.st_mode)) {
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if (unlink(fn) == 0) {
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Syslog('!', "%s not in fdb, deleted from disk", fn);
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iErrors++;
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} else {
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WriteError("$%s not in fdb, cannot delete", fn);
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}
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}
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}
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}
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}
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closedir(dp);
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} else {
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WriteError("Can't open %s", area.Path);
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}
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}
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fclose(pFile);
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chmod(fAreas, 0660);
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iAreasNew++;
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} else {
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if (strlen(area.Name) == 0) {
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sprintf(fAreas, "%s/fdb/fdb%d.data", getenv("MBSE_ROOT"), i);
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if (unlink(fAreas) == 0) {
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Syslog('+', "Removed obsolete %s", fAreas);
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}
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}
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} /* if area.Available */
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}
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fclose(pAreas);
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if (!do_quiet) {
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printf("\r \r");
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fflush(stdout);
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}
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free(mname);
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free(temp);
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free(newdir);
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free(sAreas);
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free(fAreas);
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Syslog('+', "Check Areas [%5d] Files [%5d] Errors [%5d]", iAreasNew, iTotal, iErrors);
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}
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