/*
* Copyright (C) 2002 Tomasz Kojm <zolw@konarski.edu.pl>
*
* 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 2 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, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include <stdio.h>
#include <unistd.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <sys/un.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <netdb.h>
#include <string.h>
#include "others.h"
#include "cfgfile.h"
#include "defaults.h"
#include "shared.h"
int client(const struct optstruct *opt)
{
char buff[4096], cwd[200], *file, *scancmd, *pt;
struct sockaddr_un server;
struct sockaddr_in server2;
struct hostent *he;
struct cfgstruct *copt, *cpt;
int sockd, wsockd, loopw = 60, bread, port;
const char *clamav_conf = getargl(opt, "config-file");
FILE *fd;
if(!clamav_conf)
clamav_conf = DEFAULT_CFG;
if((copt = parsecfg(clamav_conf)) == NULL) {
mprintf("@Can't parse configuration file.\n");
return 2;
}
if(cfgopt(copt, "ScannerDaemonOutputFormat")) {
mprintf("clamdscan won't work with the ScannerDaemonOutputFormat option\n");
mprintf("enabled. Please disable it in %s\n", clamav_conf);
return 2;
}
if(cfgopt(copt, "TCPSocket") && cfgopt(copt, "LocalSocket")) {
mprintf("@Clamd is not configured properly.\n");
return 2;
} else if((cpt = cfgopt(copt, "LocalSocket"))) {
server.sun_family = AF_UNIX;
strncpy(server.sun_path, cpt->strarg, sizeof(server.sun_path));
if((sockd = socket(AF_UNIX, SOCK_STREAM, 0)) < 0) {
perror("socket()");
mprintf("@Can't create the socket.\n");
return 2;
}
if(connect(sockd, (struct sockaddr *) &server, sizeof(struct sockaddr_un)) < 0) {
close(sockd);
perror("connect()");
mprintf("@Can't connect to clamd.\n");
return 2;
}
} else if((cpt = cfgopt(copt, "TCPSocket"))) {
#ifdef PF_INET
if((sockd = socket(PF_INET, SOCK_STREAM, 0)) < 0) {
#else
if((sockd = socket(AF_INET, SOCK_STREAM, 0)) < 0) {
#endif
perror("socket()");
mprintf("@Can't create the socket.\n");
return 2;
}
server2.sin_family = AF_INET;
server2.sin_port = htons(cpt->numarg);
if((cpt = cfgopt(copt, "TCPAddr"))) {
if ((he = gethostbyname(cpt->strarg)) == 0) {
close(sockd);
perror("gethostbyname()");
mprintf("@Can't lookup clamd hostname.\n");
return 2;
}
server2.sin_addr = *(struct in_addr *) he->h_addr_list[0];
} else server2.sin_addr.s_addr = inet_addr("127.0.0.1");
if(connect(sockd, (struct sockaddr *) &server2, sizeof(struct sockaddr_in)) < 0) {
close(sockd);
perror("connect()");
mprintf("@Can't connect to clamd.\n");
return 2;
}
} else {
mprintf("@Clamd is not configured properly.\n");
return 2;
}
/* we need the full path to the file */
if(!getcwd(cwd, 200)) {
mprintf("@Can't get absolute pathname of current working directory.\n");
return 2;
}
if(!getcwd(cwd, 200)) {
mprintf("@Can't get the absolute pathname of the current working directory.\n");
return 2;
}
if(opt->filename == NULL || strlen(opt->filename) == 0) {
file = (char *) strdup(cwd);
} else if(!strcmp(opt->filename, "-")) { /* scan data from stdin */
if(write(sockd, "STREAM", 6) <= 0) {
mprintf("@Can't write to the socket.\n");
close(sockd);
return 2;
}
memset(buff, 0, sizeof(buff));
while(loopw) {
read(sockd, buff, sizeof(buff));
if((pt = strstr(buff, "PORT"))) {
pt += 5;
sscanf(pt, "%d", &port);
break;
}
loopw--;
}
if(!loopw) {
mprintf("@Daemon not ready for stream scanning.\n");
return 2;
}
/* connect to clamd */
#ifdef PF_INET
if((wsockd = socket(PF_INET, SOCK_STREAM, 0)) < 0) {
#else
if((wsockd = socket(AF_INET, SOCK_STREAM, 0)) < 0) {
#endif
perror("socket()");
mprintf("@Can't create the socket.\n");
return 2;
}
server2.sin_family = AF_INET;
server2.sin_addr.s_addr = inet_addr("127.0.0.1");
server2.sin_port = htons(port);
if(connect(wsockd, (struct sockaddr *) &server2, sizeof(struct sockaddr_in)) < 0) {
close(wsockd);
perror("connect()");
mprintf("@Can't connect to clamd [port: %d].\n", port);
return 2;
}
while((bread = read(0, buff, sizeof(buff))) > 0) {
if(write(wsockd, buff, bread) <= 0) {
mprintf("@Can't write to the socket.\n");
close(wsockd);
return 2;
}
}
close(wsockd);
memset(buff, 0, sizeof(buff)); /* FIXME: ugly, but needed for mprintf */
while((bread = read(sockd, buff, sizeof(buff))) > 0) {
mprintf("%s", buff);
if(strstr(buff, "FOUND\n")) {
claminfo.ifiles++;
logg("%s", buff);
}
if (strstr(buff, "ERROR\n")) {
claminfo.errors++;
logg("%s", buff);
}
memset(buff, 0, sizeof(buff));
}
return claminfo.ifiles ? 1 : (claminfo.errors ? 2 : 0);
} else if(opt->filename[0] == '/') {
file = (char *) strdup(opt->filename);
} else {
if(fileinfo(opt->filename, 2) == -1) {
mprintf("@Can't access file %s\n", opt->filename);
perror(opt->filename);
return 2;
} else {
file = mcalloc(200 + strlen(opt->filename) + 10, sizeof(char));
sprintf(file, "%s/%s", cwd, opt->filename);
}
}
scancmd = mcalloc(strlen(file) + 20, sizeof(char));
sprintf(scancmd, "CONTSCAN %s", file);
if(write(sockd, scancmd, strlen(scancmd)) <= 0) {
mprintf("@Can't write to the socket.\n");
close(sockd);
return 2;
}
if((fd = fdopen(sockd, "r")) == NULL) {
mprintf("@Can't open descriptor %d to read.\n", sockd);
return 2;
}
while(fgets(buff, sizeof(buff), fd)) {
if(strstr(buff, "FOUND\n")) {
claminfo.ifiles++;
logg("%s", buff);
}
if (strstr(buff, "ERROR\n")) {
claminfo.errors++;
logg("%s", buff);
}
mprintf("%s", buff);
}
fclose(fd);
return claminfo.ifiles ? 1 : (claminfo.errors ? 2 : 0);
}