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296 lines
6.3 KiB
296 lines
6.3 KiB
/*
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* Copyright (C) 2002 - 2007 Tomasz Kojm <tkojm@clamav.net>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU 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 this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
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* MA 02110-1301, USA.
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*/
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#if HAVE_CONFIG_H
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#include "clamav-config.h"
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#endif
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#ifdef HAVE_UNISTD_H
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#include <unistd.h>
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#endif
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#include <sys/stat.h>
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#include <sys/types.h>
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#ifndef C_WINDOWS
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#include <sys/wait.h>
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#endif
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#ifdef HAVE_PWD_H
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#include <pwd.h>
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#endif
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#ifdef HAVE_GRP_H
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#include <grp.h>
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#endif
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#ifndef C_WINDOWS
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#include <dirent.h>
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#endif
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#include <errno.h>
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#include "global.h"
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#include "manager.h"
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#include "others.h"
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#include "treewalk.h"
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#include "shared/options.h"
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#include "shared/output.h"
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#include "shared/misc.h"
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#include "libclamav/clamav.h"
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#include "libclamav/others.h"
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int treewalk(const char *dirname, struct cl_engine *engine, const struct passwd *user, const struct optstruct *opt, const struct cl_limits *limits, unsigned int options, unsigned int depth)
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{
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DIR *dd;
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struct dirent *dent;
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struct stat statbuf;
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char *fname;
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int scanret = 0, included;
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unsigned int maxdepth;
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const struct optnode *optnode;
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char *argument;
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if(opt_check(opt, "exclude-dir")) {
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argument = opt_firstarg(opt, "exclude-dir", &optnode);
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while(argument) {
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if(match_regex(dirname, argument) == 1) {
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if(!printinfected)
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logg("%s: Excluded\n", dirname);
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return 0;
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}
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argument = opt_nextarg(&optnode, "exclude-dir");
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}
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}
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if(opt_check(opt, "include-dir")) {
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included = 0;
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argument = opt_firstarg(opt, "include-dir", &optnode);
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while(argument && !included) {
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if(match_regex(dirname, argument) == 1) {
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included = 1;
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break;
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}
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argument = opt_nextarg(&optnode, "include-dir");
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}
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if(!included) {
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if(!printinfected)
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logg("%s: Excluded\n", dirname);
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return 0;
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}
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}
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if(opt_check(opt, "max-dir-recursion"))
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maxdepth = atoi(opt_arg(opt, "max-dir-recursion"));
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else
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maxdepth = 15;
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if(depth > maxdepth)
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return 0;
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info.dirs++;
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depth++;
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if((dd = opendir(dirname)) != NULL) {
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while((dent = readdir(dd))) {
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#if !defined(C_INTERIX) && !defined(C_WINDOWS) && !defined(C_CYGWIN)
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if(dent->d_ino)
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#endif
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{
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if(strcmp(dent->d_name, ".") && strcmp(dent->d_name, "..")) {
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/* build the full name */
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fname = malloc(strlen(dirname) + strlen(dent->d_name) + 2);
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sprintf(fname, "%s/%s", dirname, dent->d_name);
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/* stat the file */
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if(lstat(fname, &statbuf) != -1) {
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if(S_ISDIR(statbuf.st_mode) && !S_ISLNK(statbuf.st_mode) && recursion) {
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if(treewalk(fname, engine, user, opt, limits, options, depth) == 1)
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scanret++;
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} else {
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if(S_ISREG(statbuf.st_mode))
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scanret += scanfile(fname, engine, user, opt, limits, options);
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}
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}
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free(fname);
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}
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}
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}
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} else {
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if(!printinfected)
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logg("%s: Can't open directory.\n", dirname);
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return 53;
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}
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closedir(dd);
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if(scanret)
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return 1;
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else
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return 0;
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}
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#ifdef C_WINDOWS
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int clamav_rmdirs(const char *dir)
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{
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return cli_rmdirs(dir);
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}
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#else
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int clamav_rmdirs(const char *dir)
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{
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#ifndef C_CYGWIN
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struct passwd *user;
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#endif
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pid_t pid;
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int status;
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switch(pid = fork()) {
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case -1:
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return -1;
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case 0:
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#ifndef C_CYGWIN
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if(!geteuid()) {
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if((user = getpwnam(CLAMAVUSER)) == NULL)
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return -3;
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#ifdef HAVE_SETGROUPS
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if(setgroups(1, &user->pw_gid)) {
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fprintf(stderr, "ERROR: setgroups() failed.\n");
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return -3;
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}
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#endif
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if(setgid(user->pw_gid)) {
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fprintf(stderr, "ERROR: setgid(%d) failed.\n", (int) user->pw_gid);
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return -3;
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}
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if(setuid(user->pw_uid)) {
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fprintf(stderr, "ERROR: setuid(%d) failed.\n", (int) user->pw_uid);
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return -3;
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}
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}
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#endif
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cli_rmdirs(dir);
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exit(0);
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break;
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default:
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waitpid(pid, &status, 0);
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if(WIFEXITED(status))
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return 0;
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else
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return -2;
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}
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}
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#endif
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int fixperms(const char *dirname)
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{
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DIR *dd;
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struct dirent *dent;
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struct stat statbuf;
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char *fname;
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int scanret = 0;
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if((dd = opendir(dirname)) != NULL) {
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while((dent = readdir(dd))) {
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#if !defined(C_INTERIX) && !defined(C_WINDOWS) && !defined(C_CYGWIN)
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if(dent->d_ino)
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#endif
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{
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if(strcmp(dent->d_name, ".") && strcmp(dent->d_name, "..")) {
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/* build full name */
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fname = malloc(strlen(dirname) + strlen(dent->d_name) + 2);
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sprintf(fname, "%s/%s", dirname, dent->d_name);
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/* stat the file */
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if(lstat(fname, &statbuf) != -1) {
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if(S_ISDIR(statbuf.st_mode) && !S_ISLNK(statbuf.st_mode)) {
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chmod(fname, 0700);
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fixperms(fname);
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} else if(S_ISREG(statbuf.st_mode))
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chmod(fname, 0700);
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}
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free(fname);
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}
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}
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}
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} else {
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if(!printinfected)
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logg("%s: Can't open directory.\n", dirname);
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return 53;
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}
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closedir(dd);
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if(scanret)
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return 1;
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else
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return 0;
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}
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int du(const char *dirname, struct s_du *n)
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{
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DIR *dd;
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struct dirent *dent;
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struct stat statbuf;
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char *fname;
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if((dd = opendir(dirname)) != NULL) {
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while((dent = readdir(dd))) {
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#if !defined(C_INTERIX) && !defined(C_WINDOWS) && !defined(C_CYGWIN)
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if(dent->d_ino)
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#endif
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{
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if(strcmp(dent->d_name, ".") && strcmp(dent->d_name, "..")) {
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n->files++;
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/* build the full name */
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fname = malloc(strlen(dirname) + strlen(dent->d_name) + 2);
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sprintf(fname, "%s/%s", dirname, dent->d_name);
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/* stat the file */
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if(lstat(fname, &statbuf) != -1) {
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if(S_ISDIR(statbuf.st_mode) && !S_ISLNK(statbuf.st_mode)) {
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du(fname, n);
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} else {
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n->space += statbuf.st_size / 1024;
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}
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}
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free(fname);
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}
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}
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}
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} else {
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if(!printinfected)
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logg("%s: Can't open directory.\n", dirname);
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return 53;
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}
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closedir(dd);
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return 0;
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}
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