static int cli_cvdverify(FILE *fs, struct cl_cvd *cvdpt, unsigned int skipsig)
{
struct cl_cvd *cvd;
char *md5, head[513];
int i;
fseek(fs, 0, SEEK_SET);
if(fread(head, 1, 512, fs) != 512) {
cli_errmsg("cli_cvdverify: Can't read CVD header\n");
return CL_ECVD;
}
head[512] = 0;
for(i = 511; i > 0 && (head[i] == ' ' || head[i] == 10); head[i] = 0, i--);
if((cvd = cl_cvdparse(head)) == NULL)
return CL_ECVD;
if(cvdpt)
memcpy(cvdpt, cvd, sizeof(struct cl_cvd));
if(skipsig) {
cl_cvdfree(cvd);
return CL_SUCCESS;
}
md5 = cli_hashstream(fs, NULL, 1);
if (md5 == NULL) {
cli_dbgmsg("cli_cvdverify: Cannot generate hash, out of memory\n");
cl_cvdfree(cvd);
return CL_EMEM;
}
cli_dbgmsg("MD5(.tar.gz) = %s\n", md5);
if(strncmp(md5, cvd->md5, 32)) {
cli_dbgmsg("cli_cvdverify: MD5 verification error\n");
free(md5);
cl_cvdfree(cvd);
return CL_EVERIFY;
}
if(cli_versig(md5, cvd->dsig)) {
cli_dbgmsg("cli_cvdverify: Digital signature verification error\n");
free(md5);
cl_cvdfree(cvd);
return CL_EVERIFY;
}
free(md5);
cl_cvdfree(cvd);
return CL_SUCCESS;
}
static int cli_cvdverify(FILE *fs, struct cl_cvd *cvdpt)
{
struct cl_cvd *cvd;
char *md5, head[513];
int i;
fseek(fs, 0, SEEK_SET);
if(fread(head, 1, 512, fs) != 512) {
cli_errmsg("cli_cvdverify: Can't read CVD header\n");
return CL_ECVD;
}
head[512] = 0;
for(i = 511; i > 0 && (head[i] == ' ' || head[i] == 10); head[i] = 0, i--);
if((cvd = cl_cvdparse(head)) == NULL)
return CL_ECVD;
if(cvdpt)
memcpy(cvdpt, cvd, sizeof(struct cl_cvd));
md5 = cli_md5stream(fs, NULL);
cli_dbgmsg("MD5(.tar.gz) = %s\n", md5);
if(strncmp(md5, cvd->md5, 32)) {
cli_dbgmsg("cli_cvdverify: MD5 verification error\n");
free(md5);
cl_cvdfree(cvd);
return CL_EMD5;
}
#ifdef HAVE_GMP
if(cli_versig(md5, cvd->dsig)) {
cli_dbgmsg("cli_cvdverify: Digital signature verification error\n");
free(md5);
cl_cvdfree(cvd);
return CL_EDSIG;
}
#endif
free(md5);
cl_cvdfree(cvd);
return 0;
}
qint32 ClamavEngine::dbAge() const
{
QDir db_dir(m_p -> dbPath());
QStringList files = db_dir.entryList(QStringList() << "*.cvd" << "*.cld", QDir::Files | QDir::Hidden | QDir::NoSymLinks);
QDateTime res, tmp;
foreach(QString file, files)
{
cl_cvd *cvd = cl_cvdhead(db_dir.absoluteFilePath(file).toLocal8Bit().data());
if(!cvd)
continue;
tmp.setTime_t(cvd -> stime);
cl_cvdfree(cvd);
if(res.isNull() || tmp > res)
res = tmp;
}
cl_cvd VirusScan::getCVDInfo(char *file)
{
cl_cvd ret;
struct cl_cvd *cc;
cc = cl_cvdhead(file);
ret.builder = cc->builder;
ret.dsig = cc->dsig;
ret.fl = cc->fl;
ret.md5 = cc->md5;
ret.sigs = cc->sigs;
ret.stime = cc->stime;
ret.time = cc->time;
ret.version = cc->version;
cl_cvdfree(cc);
return ret;
}
int command(int desc, const struct cl_node *root, const struct cl_limits *limits, int options, const struct cfgstruct *copt, int timeout)
{
char buff[1025];
int bread, opt, retval;
struct cfgstruct *cpt;
retval = poll_fd(desc, timeout);
switch (retval) {
case 0: /* timeout */
return -2;
case -1:
mdprintf(desc, "ERROR\n");
logg("!Command: poll_fd failed.\n");
return -1;
}
while((bread = readsock(desc, buff, 1024)) == -1 && errno == EINTR);
if(bread == 0) {
/* Connection closed */
return -1;
}
if(bread < 0) {
logg("!Command parser: read() failed.\n");
/* at least try to display this error message */
/* mdprintf(desc, "ERROR: Command parser: read() failed.\n"); */
return -1;
}
buff[bread] = 0;
cli_chomp(buff);
if(!strncmp(buff, CMD1, strlen(CMD1))) { /* SCAN */
if(scan(buff + strlen(CMD1) + 1, NULL, root, limits, options, copt, desc, 0) == -2)
if(cfgopt(copt, "ExitOnOOM"))
return COMMAND_SHUTDOWN;
} else if(!strncmp(buff, CMD2, strlen(CMD2))) { /* RAWSCAN */
opt = options & ~CL_SCAN_ARCHIVE;
if(scan(buff + strlen(CMD2) + 1, NULL, root, NULL, opt, copt, desc, 0) == -2)
if(cfgopt(copt, "ExitOnOOM"))
return COMMAND_SHUTDOWN;
} else if(!strncmp(buff, CMD3, strlen(CMD3))) { /* QUIT */
return COMMAND_SHUTDOWN;
} else if(!strncmp(buff, CMD4, strlen(CMD4))) { /* RELOAD */
mdprintf(desc, "RELOADING\n");
return COMMAND_RELOAD;
} else if(!strncmp(buff, CMD5, strlen(CMD5))) { /* PING */
mdprintf(desc, "PONG\n");
} else if(!strncmp(buff, CMD6, strlen(CMD6))) { /* CONTSCAN */
if(scan(buff + strlen(CMD6) + 1, NULL, root, limits, options, copt, desc, 1) == -2)
if(cfgopt(copt, "ExitOnOOM"))
return COMMAND_SHUTDOWN;
} else if(!strncmp(buff, CMD7, strlen(CMD7))) { /* VERSION */
const char *dbdir;
char *path;
struct cl_cvd *daily;
if((cpt = cfgopt(copt, "DatabaseDirectory")) || (cpt = cfgopt(copt, "DataDirectory")))
dbdir = cpt->strarg;
else
dbdir = cl_retdbdir();
if(!(path = mmalloc(strlen(dbdir) + 11))) {
mdprintf(desc, "Memory allocation error - SHUTDOWN forced\n");
return COMMAND_SHUTDOWN;
}
sprintf(path, "%s/daily.cvd", dbdir);
if((daily = cl_cvdhead(path))) {
time_t t = (time_t) daily->stime;
pthread_mutex_lock(&ctime_mutex);
mdprintf(desc, "ClamAV "VERSION"/%d/%s", daily->version, ctime(&t));
pthread_mutex_unlock(&ctime_mutex);
cl_cvdfree(daily);
} else {
mdprintf(desc, "ClamAV "VERSION"\n");
}
free(path);
} else if(!strncmp(buff, CMD8, strlen(CMD8))) { /* STREAM */
if(scanstream(desc, NULL, root, limits, options, copt) == CL_EMEM)
if(cfgopt(copt, "ExitOnOOM"))
return COMMAND_SHUTDOWN;
} else if(!strncmp(buff, CMD9, strlen(CMD9))) { /* SESSION */
return COMMAND_SESSION;
} else if(!strncmp(buff, CMD10, strlen(CMD10))) { /* END */
return COMMAND_END;
} else if(!strncmp(buff, CMD11, strlen(CMD11))) { /* SHUTDOWN */
return COMMAND_SHUTDOWN;
} else if(!strncmp(buff, CMD12, strlen(CMD12))) { /* FD */
int fd = atoi(buff + strlen(CMD12) + 1);
scanfd(fd, NULL, root, limits, options, copt, desc, 0);
close(fd); /* FIXME: should we close it here? */
} else {
mdprintf(desc, "UNKNOWN COMMAND\n");
}
return 0; /* no error and no 'special' command executed */
}
/*
* TODO:
* - strptime() is most likely not portable enough
*/
int submitstats(const char *clamdcfg, const struct optstruct *opts)
{
int fd, sd, bread, lread = 0, cnt, ret;
char post[SUBMIT_MIN_ENTRIES * 256 + 512];
char query[SUBMIT_MIN_ENTRIES * 256];
char buff[512], statsdat[512], newstatsdat[512], uastr[128];
char logfile[256], fbuff[FILEBUFF];
char *pt, *pt2, *auth = NULL;
const char *line, *country = NULL, *user, *proxy = NULL;
struct optstruct *clamdopt;
const struct optstruct *opt;
struct stat sb;
struct tm tms;
time_t epoch;
unsigned int qcnt, entries, submitted = 0, permfail = 0, port = 0;
if((opt = optget(opts, "DetectionStatsCountry"))->enabled) {
if(strlen(opt->strarg) != 2 || !isalpha(opt->strarg[0]) || !isalpha(opt->strarg[1])) {
logg("!SubmitDetectionStats: DetectionStatsCountry requires a two-letter country code\n");
return 56;
}
country = opt->strarg;
}
if(!(clamdopt = optparse(clamdcfg, 0, NULL, 1, OPT_CLAMD, 0, NULL))) {
logg("!SubmitDetectionStats: Can't open or parse configuration file %s\n", clamdcfg);
return 56;
}
if(!(opt = optget(clamdopt, "LogFile"))->enabled) {
logg("!SubmitDetectionStats: LogFile needs to be enabled in %s\n", clamdcfg);
optfree(clamdopt);
return 56;
}
strncpy(logfile, opt->strarg, sizeof(logfile));
logfile[sizeof(logfile) - 1] = 0;
if(!optget(clamdopt, "LogTime")->enabled) {
logg("!SubmitDetectionStats: LogTime needs to be enabled in %s\n", clamdcfg);
optfree(clamdopt);
return 56;
}
optfree(clamdopt);
if((fd = open("stats.dat", O_RDONLY)) != -1) {
if((bread = read(fd, statsdat, sizeof(statsdat) - 1)) == -1) {
logg("^SubmitDetectionStats: Can't read stats.dat\n");
bread = 0;
}
statsdat[bread] = 0;
close(fd);
} else {
*statsdat = 0;
}
if((fd = open(logfile, O_RDONLY)) == -1) {
logg("!SubmitDetectionStats: Can't open %s for reading\n", logfile);
return 56;
}
if(fstat(fd, &sb) == -1) {
logg("!SubmitDetectionStats: fstat() failed\n");
close(fd);
return 56;
}
while((line = readbline(fd, fbuff, FILEBUFF, sb.st_size, &lread)))
if(strlen(line) >= 32 && !strcmp(&line[strlen(line) - 6], " FOUND"))
break;
if(!line) {
logg("SubmitDetectionStats: No detection records found\n");
close(fd);
return 1;
}
if(*statsdat && !strcmp(line, statsdat)) {
logg("SubmitDetectionStats: No new detection records found\n");
close(fd);
return 1;
} else {
strncpy(newstatsdat, line, sizeof(newstatsdat));
}
if((opt = optget(opts, "HTTPUserAgent"))->enabled)
strncpy(uastr, opt->strarg, sizeof(uastr));
else
snprintf(uastr, sizeof(uastr), PACKAGE"/%s (OS: "TARGET_OS_TYPE", ARCH: "TARGET_ARCH_TYPE", CPU: "TARGET_CPU_TYPE")%s%s", get_version(), country ? ":" : "", country ? country : "");
uastr[sizeof(uastr) - 1] = 0;
if((opt = optget(opts, "HTTPProxyServer"))->enabled) {
proxy = opt->strarg;
if(!strncasecmp(proxy, "http://", 7))
proxy += 7;
if((opt = optget(opts, "HTTPProxyUsername"))->enabled) {
user = opt->strarg;
if(!(opt = optget(opts, "HTTPProxyPassword"))->enabled) {
logg("!SubmitDetectionStats: HTTPProxyUsername requires HTTPProxyPassword\n");
close(fd);
return 56;
}
auth = proxyauth(user, opt->strarg);
if(!auth) {
close(fd);
return 56;
}
}
if((opt = optget(opts, "HTTPProxyPort"))->enabled)
port = opt->numarg;
logg("*Connecting via %s\n", proxy);
}
ret = 0;
memset(query, 0, sizeof(query));
qcnt = 0;
entries = 0;
do {
if(strlen(line) < 32 || strcmp(&line[strlen(line) - 6], " FOUND"))
continue;
if(*statsdat && !strcmp(line, statsdat))
break;
strncpy(buff, line, sizeof(buff));
buff[sizeof(buff) - 1] = 0;
if(!(pt = strstr(buff, " -> "))) {
logg("*SubmitDetectionStats: Skipping detection entry logged without time\b");
continue;
}
*pt = 0;
pt += 4;
if(!strptime(buff, "%a %b %d %H:%M:%S %Y", &tms) || (epoch = mktime(&tms)) == -1) {
logg("!SubmitDetectionStats: Failed to convert date string\n");
ret = 1;
break;
}
pt2 = &pt[strlen(pt) - 6];
*pt2 = 0;
if(!(pt2 = strrchr(pt, ':'))) {
logg("!SubmitDetectionStats: Incorrect format of the log file (1)\n");
ret = 1;
break;
}
*pt2 = 0;
pt2 += 2;
#ifdef C_WINDOWS
if((pt = strrchr(pt, '\\')))
#else
if((pt = strrchr(pt, '/')))
#endif
*pt++ = 0;
if(!pt)
pt = (char*) "NOFNAME";
qcnt += snprintf(&query[qcnt], sizeof(query) - qcnt, "ts[]=%u&fname[]=%s&virus[]=%s&", (unsigned int) epoch, pt, pt2);
entries++;
if(entries == SUBMIT_MIN_ENTRIES) {
sd = wwwconnect("stats.clamav.net", proxy, port, NULL, optget(opts, "LocalIPAddress")->strarg, optget(opts, "ConnectTimeout")->numarg, NULL, 0, 0);
if(sd == -1) {
logg("!SubmitDetectionStats: Can't connect to server\n");
ret = 52;
break;
}
query[sizeof(query) - 1] = 0;
snprintf(post, sizeof(post),
"POST http://stats.clamav.net/submit.php HTTP/1.0\r\n"
"Host: stats.clamav.net\r\n%s"
"Content-Type: application/x-www-form-urlencoded\r\n"
"User-Agent: %s\r\n"
"Content-Length: %u\r\n\n"
"%s",
auth ? auth : "", uastr, (unsigned int) strlen(query), query);
if(send(sd, post, strlen(post), 0) < 0) {
logg("!SubmitDetectionStats: Can't write to socket\n");
ret = 52;
closesocket(sd);
break;
}
pt = post;
cnt = sizeof(post) - 1;
#ifdef SO_ERROR
while((bread = wait_recv(sd, pt, cnt, 0, optget(opts, "ReceiveTimeout")->numarg)) > 0) {
#else
while((bread = recv(sd, pt, cnt, 0)) > 0) {
#endif
pt += bread;
cnt -= bread;
if(cnt <= 0)
break;
}
*pt = 0;
closesocket(sd);
if(bread < 0) {
logg("!SubmitDetectionStats: Can't read from socket\n");
ret = 52;
break;
}
if(strstr(post, "SUBMIT_OK")) {
submitted += entries;
if(submitted + SUBMIT_MIN_ENTRIES > SUBMIT_MAX_ENTRIES)
break;
qcnt = 0;
entries = 0;
memset(query, 0, sizeof(query));
continue;
}
ret = 52;
if((pt = strstr(post, "SUBMIT_PERMANENT_FAILURE"))) {
if(!submitted) {
permfail = 1;
if((pt + 32 <= post + sizeof(post)) && pt[24] == ':')
logg("!SubmitDetectionStats: Remote server reported permanent failure: %s\n", &pt[25]);
else
logg("!SubmitDetectionStats: Remote server reported permanent failure\n");
}
} else if((pt = strstr(post, "SUBMIT_TEMPORARY_FAILURE"))) {
if(!submitted) {
if((pt + 32 <= post + sizeof(post)) && pt[24] == ':')
logg("!SubmitDetectionStats: Remote server reported temporary failure: %s\n", &pt[25]);
else
logg("!SubmitDetectionStats: Remote server reported temporary failure\n");
}
} else {
if(!submitted)
logg("!SubmitDetectionStats: Incorrect answer from server\n");
}
break;
}
} while((line = readbline(fd, fbuff, FILEBUFF, sb.st_size, &lread)));
close(fd);
if(auth)
free(auth);
if(submitted || permfail) {
if((fd = open("stats.dat", O_WRONLY | O_CREAT | O_TRUNC, 0600)) == -1) {
logg("^SubmitDetectionStats: Can't open stats.dat for writing\n");
} else {
if((bread = write(fd, newstatsdat, sizeof(newstatsdat))) != sizeof(newstatsdat))
logg("^SubmitDetectionStats: Can't write to stats.dat\n");
close(fd);
}
}
if(ret == 0) {
if(!submitted)
logg("SubmitDetectionStats: Not enough recent data for submission\n");
else
logg("SubmitDetectionStats: Submitted %u records\n", submitted);
}
return ret;
}
static int Rfc2822DateTime(char *buf, time_t mtime)
{
struct tm *gmt;
gmt = gmtime(&mtime);
return strftime(buf, 36, "%a, %d %b %Y %X GMT", gmt);
}
static struct cl_cvd *remote_cvdhead(const char *cvdfile, const char *localfile, const char *hostname, char *ip, const char *localip, const char *proxy, int port, const char *user, const char *pass, const char *uas, int *ims, int ctimeout, int rtimeout, struct mirdat *mdat, int logerr, unsigned int can_whitelist)
{
char cmd[512], head[513], buffer[FILEBUFF], ipaddr[46], *ch, *tmp;
int bread, cnt, sd;
unsigned int i, j;
char *remotename = NULL, *authorization = NULL;
struct cl_cvd *cvd;
char last_modified[36], uastr[128];
if(proxy) {
remotename = malloc(strlen(hostname) + 8);
if(!remotename) {
logg("!remote_cvdhead: Can't allocate memory for 'remotename'\n");
return NULL;
}
sprintf(remotename, "http://%s", hostname);
if(user) {
authorization = proxyauth(user, pass);
if(!authorization) {
free(remotename);
return NULL;
}
}
}
if(!access(localfile, R_OK)) {
cvd = cl_cvdhead(localfile);
if(!cvd) {
logg("!remote_cvdhead: Can't parse file %s\n", localfile);
free(remotename);
free(authorization);
return NULL;
}
Rfc2822DateTime(last_modified, (time_t) cvd->stime);
cl_cvdfree(cvd);
} else {
time_t mtime = 1104119530;
Rfc2822DateTime(last_modified, mtime);
logg("*Assuming modification time in the past\n");
}
logg("*If-Modified-Since: %s\n", last_modified);
logg("Reading CVD header (%s): ", cvdfile);
if(uas)
strncpy(uastr, uas, sizeof(uastr));
else
snprintf(uastr, sizeof(uastr), PACKAGE"/%s (OS: "TARGET_OS_TYPE", ARCH: "TARGET_ARCH_TYPE", CPU: "TARGET_CPU_TYPE")", get_version());
uastr[sizeof(uastr) - 1] = 0;
snprintf(cmd, sizeof(cmd),
"GET %s/%s HTTP/1.0\r\n"
"Host: %s\r\n%s"
"User-Agent: %s\r\n"
"Connection: close\r\n"
"Range: bytes=0-511\r\n"
"If-Modified-Since: %s\r\n"
"\r\n", (remotename != NULL) ? remotename : "", cvdfile, hostname, (authorization != NULL) ? authorization : "", uastr, last_modified);
free(remotename);
free(authorization);
memset(ipaddr, 0, sizeof(ipaddr));
if(ip[0]) /* use ip to connect */
sd = wwwconnect(ip, proxy, port, ipaddr, localip, ctimeout, mdat, logerr, can_whitelist);
else
sd = wwwconnect(hostname, proxy, port, ipaddr, localip, ctimeout, mdat, logerr, can_whitelist);
if(sd < 0) {
return NULL;
} else {
logg("*Connected to %s (IP: %s).\n", hostname, ipaddr);
logg("*Trying to retrieve CVD header of http://%s/%s\n", hostname, cvdfile);
}
if(!ip[0])
strcpy(ip, ipaddr);
if(send(sd, cmd, strlen(cmd), 0) < 0) {
logg("%cremote_cvdhead: write failed\n", logerr ? '!' : '^');
closesocket(sd);
return NULL;
}
tmp = buffer;
cnt = FILEBUFF;
#ifdef SO_ERROR
while((bread = wait_recv(sd, tmp, cnt, 0, rtimeout)) > 0) {
#else
while((bread = recv(sd, tmp, cnt, 0)) > 0) {
#endif
tmp += bread;
cnt -= bread;
if(cnt <= 0)
break;
}
closesocket(sd);
if(bread == -1) {
logg("%cremote_cvdhead: Error while reading CVD header from %s\n", logerr ? '!' : '^', hostname);
mirman_update(mdat->currip, mdat->af, mdat, 1);
return NULL;
}
if((strstr(buffer, "HTTP/1.1 404")) != NULL || (strstr(buffer, "HTTP/1.0 404")) != NULL) {
logg("%cCVD file not found on remote server\n", logerr ? '!' : '^');
mirman_update(mdat->currip, mdat->af, mdat, 2);
return NULL;
}
/* check whether the resource is up-to-date */
if((strstr(buffer, "HTTP/1.1 304")) != NULL || (strstr(buffer, "HTTP/1.0 304")) != NULL) {
*ims = 0;
logg("OK (IMS)\n");
mirman_update(mdat->currip, mdat->af, mdat, 0);
return NULL;
} else {
*ims = 1;
}
if(!strstr(buffer, "HTTP/1.1 200") && !strstr(buffer, "HTTP/1.0 200") &&
!strstr(buffer, "HTTP/1.1 206") && !strstr(buffer, "HTTP/1.0 206")) {
logg("%cUnknown response from remote server\n", logerr ? '!' : '^');
mirman_update(mdat->currip, mdat->af, mdat, 1);
return NULL;
}
i = 3;
ch = buffer + i;
while(i < sizeof(buffer)) {
if (*ch == '\n' && *(ch - 1) == '\r' && *(ch - 2) == '\n' && *(ch - 3) == '\r') {
ch++;
i++;
break;
}
ch++;
i++;
}
if(sizeof(buffer) - i < 512) {
logg("%cremote_cvdhead: Malformed CVD header (too short)\n", logerr ? '!' : '^');
mirman_update(mdat->currip, mdat->af, mdat, 1);
return NULL;
}
memset(head, 0, sizeof(head));
for(j = 0; j < 512; j++) {
if(!ch || (ch && !*ch) || (ch && !isprint(ch[j]))) {
logg("%cremote_cvdhead: Malformed CVD header (bad chars)\n", logerr ? '!' : '^');
mirman_update(mdat->currip, mdat->af, mdat, 1);
return NULL;
}
head[j] = ch[j];
}
if(!(cvd = cl_cvdparse(head))) {
logg("%cremote_cvdhead: Malformed CVD header (can't parse)\n", logerr ? '!' : '^');
mirman_update(mdat->currip, mdat->af, mdat, 1);
} else {
logg("OK\n");
mirman_update(mdat->currip, mdat->af, mdat, 0);
}
return cvd;
}
static int getfile(const char *srcfile, const char *destfile, const char *hostname, char *ip, const char *localip, const char *proxy, int port, const char *user, const char *pass, const char *uas, int ctimeout, int rtimeout, struct mirdat *mdat, int logerr, unsigned int can_whitelist)
{
char cmd[512], uastr[128], buffer[FILEBUFF], *ch;
int bread, fd, totalsize = 0, rot = 0, totaldownloaded = 0,
percentage = 0, sd;
unsigned int i;
char *remotename = NULL, *authorization = NULL, *headerline, ipaddr[46];
const char *rotation = "|/-\\";
#ifdef FILTER_RULES
pid_t pid = -1;
#endif
if(proxy) {
remotename = malloc(strlen(hostname) + 8);
if(!remotename) {
logg("!getfile: Can't allocate memory for 'remotename'\n");
return 75; /* FIXME */
}
sprintf(remotename, "http://%s", hostname);
if(user) {
authorization = proxyauth(user, pass);
if(!authorization) {
free(remotename);
return 75; /* FIXME */
}
}
}
if(uas)
strncpy(uastr, uas, sizeof(uastr));
else
snprintf(uastr, sizeof(uastr), PACKAGE"/%s (OS: "TARGET_OS_TYPE", ARCH: "TARGET_ARCH_TYPE", CPU: "TARGET_CPU_TYPE")", get_version());
uastr[sizeof(uastr) - 1] = 0;
snprintf(cmd, sizeof(cmd),
"GET %s/%s HTTP/1.0\r\n"
"Host: %s\r\n%s"
"User-Agent: %s\r\n"
#ifdef FRESHCLAM_NO_CACHE
"Cache-Control: no-cache\r\n"
#endif
"Connection: close\r\n"
"\r\n", (remotename != NULL) ? remotename : "", srcfile, hostname, (authorization != NULL) ? authorization : "", uastr);
if(remotename)
free(remotename);
if(authorization)
free(authorization);
memset(ipaddr, 0, sizeof(ipaddr));
if(ip[0]) /* use ip to connect */
sd = wwwconnect(ip, proxy, port, ipaddr, localip, ctimeout, mdat, logerr, can_whitelist);
else
sd = wwwconnect(hostname, proxy, port, ipaddr, localip, ctimeout, mdat, logerr, can_whitelist);
if(sd < 0) {
return 52;
} else {
logg("*Trying to download http://%s/%s (IP: %s)\n", hostname, srcfile, ipaddr);
}
if(!ip[0])
strcpy(ip, ipaddr);
if(send(sd, cmd, strlen(cmd), 0) < 0) {
logg("%cgetfile: Can't write to socket\n", logerr ? '!' : '^');
closesocket(sd);
return 52;
}
/* read http headers */
ch = buffer;
i = 0;
while(1) {
/* recv one byte at a time, until we reach \r\n\r\n */
#ifdef SO_ERROR
if((i >= sizeof(buffer) - 1) || wait_recv(sd, buffer + i, 1, 0, rtimeout) == -1) {
#else
if((i >= sizeof(buffer) - 1) || recv(sd, buffer + i, 1, 0) == -1) {
#endif
logg("%cgetfile: Error while reading database from %s (IP: %s)\n", logerr ? '!' : '^', hostname, ipaddr);
mirman_update(mdat->currip, mdat->af, mdat, 1);
closesocket(sd);
return 52;
}
if(i > 2 && *ch == '\n' && *(ch - 1) == '\r' && *(ch - 2) == '\n' && *(ch - 3) == '\r') {
i++;
break;
}
ch++;
i++;
}
buffer[i] = 0;
/* check whether the resource actually existed or not */
if((strstr(buffer, "HTTP/1.1 404")) != NULL || (strstr(buffer, "HTTP/1.0 404")) != NULL) {
logg("^getfile: %s not found on remote server (IP: %s)\n", srcfile, ipaddr);
mirman_update(mdat->currip, mdat->af, mdat, 2);
closesocket(sd);
return 58;
}
if(!strstr(buffer, "HTTP/1.1 200") && !strstr(buffer, "HTTP/1.0 200") &&
!strstr(buffer, "HTTP/1.1 206") && !strstr(buffer, "HTTP/1.0 206")) {
logg("%cgetfile: Unknown response from remote server (IP: %s)\n", logerr ? '!' : '^', ipaddr);
mirman_update(mdat->currip, mdat->af, mdat, 1);
closesocket(sd);
return 58;
}
/* get size of resource */
for(i = 0; (headerline = cli_strtok(buffer, i, "\n")); i++){
if(strstr(headerline, "Content-Length:")) {
if((ch = cli_strtok(headerline, 1, ": "))) {
totalsize = atoi(ch);
free(ch);
} else {
totalsize = 0;
}
}
free(headerline);
}
#ifdef FILTER_RULES
{
int pfd[2];
if (pipe(pfd) == -1) {
logg("!getfile: Can't create pipe to filter\n");
closesocket(sd);
return 57;
}
pid = fork();
if (pid == -1) {
logg("!getfile: Can't filter fork failed\n");
closesocket(sd);
return 57;
}
if (pid == 0) {
/* Child */
close(pfd[1]);
dup2(pfd[0], 0);
close(pfd[0]);
execl("/bin/clamfilter", "clamfilter", destfile, NULL);
_exit(1);
}
/* Parent */
close(pfd[0]);
fd = pfd[1];
destfile = "clam-filter";
}
#else
if((fd = open(destfile, O_WRONLY|O_CREAT|O_EXCL|O_BINARY, 0644)) == -1) {
char currdir[512];
if(getcwd(currdir, sizeof(currdir)))
logg("!getfile: Can't create new file %s in %s\n", destfile, currdir);
else
logg("!getfile: Can't create new file %s in the current directory\n", destfile);
logg("Hint: The database directory must be writable for UID %d or GID %d\n", getuid(), getgid());
closesocket(sd);
return 57;
}
#endif
#ifdef SO_ERROR
while((bread = wait_recv(sd, buffer, FILEBUFF, 0, rtimeout)) > 0) {
#else
while((bread = recv(sd, buffer, FILEBUFF, 0)) > 0) {
#endif
if(write(fd, buffer, bread) != bread) {
logg("getfile: Can't write %d bytes to %s\n", bread, destfile);
#ifdef FILTER_RULES
// if (pid == -1)
// unlink(destfile);
#else
unlink(destfile);
#endif
close(fd);
closesocket(sd);
return 57; /* FIXME */
}
if(totalsize > 0) {
totaldownloaded += bread;
percentage = (int) (100 * (float) totaldownloaded / totalsize);
}
if(!mprintf_quiet) {
if(totalsize > 0) {
mprintf("Downloading %s [%3i%%]\r", srcfile, percentage);
} else {
mprintf("Downloading %s [%c]\r", srcfile, rotation[rot]);
rot++;
rot %= 4;
}
fflush(stdout);
}
}
closesocket(sd);
close(fd);
#ifdef FILTER_RULES
/*if (pid != -1)*/ {
int status;
waitpid(pid, &status, 0);
if (! WIFEXITED(status) || WEXITSTATUS(status) != 0) {
logg("!getfile: Filter failed\n");
return 57;
}
}
#endif
if(totalsize > 0)
logg("Downloading %s [%i%%]\n", srcfile, percentage);
else
logg("Downloading %s [*]\n", srcfile);
mirman_update(mdat->currip, mdat->af, mdat, 0);
return 0;
}
static int getcvd(const char *cvdfile, const char *newfile, const char *hostname, char *ip, const char *localip, const char *proxy, int port, const char *user, const char *pass, const char *uas, unsigned int newver, int ctimeout, int rtimeout, struct mirdat *mdat, int logerr, unsigned int can_whitelist)
{
struct cl_cvd *cvd;
int ret;
logg("*Retrieving http://%s/%s\n", hostname, cvdfile);
if((ret = getfile(cvdfile, newfile, hostname, ip, localip, proxy, port, user, pass, uas, ctimeout, rtimeout, mdat, logerr, can_whitelist))) {
logg("%cCan't download %s from %s\n", logerr ? '!' : '^', cvdfile, hostname);
unlink(newfile);
return ret;
}
if((ret = cl_cvdverify(newfile))) {
logg("!Verification: %s\n", cl_strerror(ret));
unlink(newfile);
return 54;
}
if(!(cvd = cl_cvdhead(newfile))) {
logg("!Can't read CVD header of new %s database.\n", cvdfile);
unlink(newfile);
return 54;
}
if(cvd->version < newver) {
logg("^Mirror %s is not synchronized.\n", ip);
mirman_update(mdat->currip, mdat->af, mdat, 2);
cl_cvdfree(cvd);
unlink(newfile);
return 59;
}
cl_cvdfree(cvd);
return 0;
}
static int chdir_tmp(const char *dbname, const char *tmpdir)
{
char cvdfile[32];
if(access(tmpdir, R_OK|W_OK) == -1) {
sprintf(cvdfile, "%s.cvd", dbname);
if(access(cvdfile, R_OK) == -1) {
sprintf(cvdfile, "%s.cld", dbname);
if(access(cvdfile, R_OK) == -1) {
logg("!chdir_tmp: Can't access local %s database\n", dbname);
return -1;
}
}
if(mkdir(tmpdir, 0755) == -1) {
logg("!chdir_tmp: Can't create directory %s\n", tmpdir);
return -1;
}
if(cli_cvdunpack(cvdfile, tmpdir) == -1) {
logg("!chdir_tmp: Can't unpack %s into %s\n", cvdfile, tmpdir);
cli_rmdirs(tmpdir);
return -1;
}
}
if(chdir(tmpdir) == -1) {
logg("!chdir_tmp: Can't change directory to %s\n", tmpdir);
return -1;
}
return 0;
}
static int getpatch(const char *dbname, const char *tmpdir, int version, const char *hostname, char *ip, const char *localip, const char *proxy, int port, const char *user, const char *pass, const char *uas, int ctimeout, int rtimeout, struct mirdat *mdat, int logerr, unsigned int can_whitelist)
{
char *tempname, patch[32], olddir[512];
int ret, fd;
if(!getcwd(olddir, sizeof(olddir))) {
logg("!getpatch: Can't get path of current working directory\n");
return 50; /* FIXME */
}
if(chdir_tmp(dbname, tmpdir) == -1)
return 50;
tempname = cli_gentemp(".");
snprintf(patch, sizeof(patch), "%s-%d.cdiff", dbname, version);
logg("*Retrieving http://%s/%s\n", hostname, patch);
if((ret = getfile(patch, tempname, hostname, ip, localip, proxy, port, user, pass, uas, ctimeout, rtimeout, mdat, logerr, can_whitelist))) {
logg("%cgetpatch: Can't download %s from %s\n", logerr ? '!' : '^', patch, hostname);
unlink(tempname);
free(tempname);
CHDIR_ERR(olddir);
return ret;
}
if((fd = open(tempname, O_RDONLY|O_BINARY)) == -1) {
logg("!getpatch: Can't open %s for reading\n", tempname);
unlink(tempname);
free(tempname);
CHDIR_ERR(olddir);
return 55;
}
if(cdiff_apply(fd, 1) == -1) {
logg("!getpatch: Can't apply patch\n");
close(fd);
unlink(tempname);
free(tempname);
CHDIR_ERR(olddir);
return 70; /* FIXME */
}
close(fd);
unlink(tempname);
free(tempname);
if(chdir(olddir) == -1) {
logg("!getpatch: Can't chdir to %s\n", olddir);
return 50; /* FIXME */
}
return 0;
}
static int updatedb(const char *dbname, const char *hostname, char *ip, int *signo, const struct optstruct *opts, const char *dnsreply, char *localip, int outdated, struct mirdat *mdat, int logerr)
{
struct cl_cvd *current, *remote;
const struct optstruct *opt;
unsigned int nodb = 0, currver = 0, newver = 0, port = 0, i, j;
int ret, ims = -1;
char *pt, cvdfile[32], localname[32], *tmpdir = NULL, *newfile, newdb[32], cwd[512];
const char *proxy = NULL, *user = NULL, *pass = NULL, *uas = NULL;
unsigned int flevel = cl_retflevel(), remote_flevel = 0, maxattempts;
unsigned int can_whitelist = 0;
int ctimeout, rtimeout;
snprintf(cvdfile, sizeof(cvdfile), "%s.cvd", dbname);
if(!(current = currentdb(dbname, localname))) {
nodb = 1;
} else {
mdat->dbflevel = current->fl;
}
if(!nodb && dnsreply) {
int field = 0;
if(!strcmp(dbname, "main")) {
field = 1;
} else if(!strcmp(dbname, "daily")) {
field = 2;
} else if(!strcmp(dbname, "safebrowsing")) {
field = 6;
} else {
logg("!updatedb: Unknown database name (%s) passed.\n", dbname);
cl_cvdfree(current);
return 70;
}
if(field && (pt = cli_strtok(dnsreply, field, ":"))) {
if(!cli_isnumber(pt)) {
logg("^Broken database version in TXT record.\n");
} else {
newver = atoi(pt);
logg("*%s version from DNS: %d\n", cvdfile, newver);
}
free(pt);
} else {
logg("^Invalid DNS reply. Falling back to HTTP mode.\n");
}
}
if(dnsreply) {
if((pt = cli_strtok(dnsreply, 5, ":"))) {
remote_flevel = atoi(pt);
free(pt);
if(remote_flevel && (remote_flevel - flevel < 4))
can_whitelist = 1;
}
}
/* Initialize proxy settings */
if((opt = optget(opts, "HTTPProxyServer"))->enabled) {
proxy = opt->strarg;
if(strncasecmp(proxy, "http://", 7) == 0)
proxy += 7;
if((opt = optget(opts, "HTTPProxyUsername"))->enabled) {
user = opt->strarg;
if((opt = optget(opts, "HTTPProxyPassword"))->enabled) {
pass = opt->strarg;
} else {
logg("HTTPProxyUsername requires HTTPProxyPassword\n");
if(current)
cl_cvdfree(current);
return 56;
}
}
if((opt = optget(opts, "HTTPProxyPort"))->enabled)
port = opt->numarg;
logg("Connecting via %s\n", proxy);
}
if((opt = optget(opts, "HTTPUserAgent"))->enabled)
uas = opt->strarg;
ctimeout = optget(opts, "ConnectTimeout")->numarg;
rtimeout = optget(opts, "ReceiveTimeout")->numarg;
if(!nodb && !newver) {
remote = remote_cvdhead(cvdfile, localname, hostname, ip, localip, proxy, port, user, pass, uas, &ims, ctimeout, rtimeout, mdat, logerr, can_whitelist);
if(!nodb && !ims) {
logg("%s is up to date (version: %d, sigs: %d, f-level: %d, builder: %s)\n", localname, current->version, current->sigs, current->fl, current->builder);
*signo += current->sigs;
cl_cvdfree(current);
return 1;
}
if(!remote) {
logg("^Can't read %s header from %s (IP: %s)\n", cvdfile, hostname, ip);
cl_cvdfree(current);
return 58;
}
newver = remote->version;
cl_cvdfree(remote);
}
if(!nodb && (current->version >= newver)) {
logg("%s is up to date (version: %d, sigs: %d, f-level: %d, builder: %s)\n", localname, current->version, current->sigs, current->fl, current->builder);
if(!outdated && flevel < current->fl) {
/* display warning even for already installed database */
logg("^Current functionality level = %d, recommended = %d\n", flevel, current->fl);
logg("Please check if ClamAV tools are linked against the proper version of libclamav\n");
logg("DON'T PANIC! Read http://www.clamav.net/support/faq\n");
}
*signo += current->sigs;
cl_cvdfree(current);
return 1;
}
if(current) {
currver = current->version;
cl_cvdfree(current);
}
/*
if(ipaddr[0]) {
hostfd = wwwconnect(ipaddr, proxy, port, NULL, localip);
} else {
hostfd = wwwconnect(hostname, proxy, port, ipaddr, localip);
if(!ip[0])
strcpy(ip, ipaddr);
}
if(hostfd < 0) {
if(ipaddr[0])
logg("Connection with %s (IP: %s) failed.\n", hostname, ipaddr);
else
logg("Connection with %s failed.\n", hostname);
return 52;
};
*/
if(!optget(opts, "ScriptedUpdates")->enabled)
nodb = 1;
if(!getcwd(cwd, sizeof(cwd))) {
logg("!updatedb: Can't get path of current working directory\n");
return 50; /* FIXME */
}
newfile = cli_gentemp(cwd);
if(nodb) {
ret = getcvd(cvdfile, newfile, hostname, ip, localip, proxy, port, user, pass, uas, newver, ctimeout, rtimeout, mdat, logerr, can_whitelist);
if(ret) {
memset(ip, 0, 16);
free(newfile);
return ret;
}
snprintf(newdb, sizeof(newdb), "%s.cvd", dbname);
} else {
ret = 0;
tmpdir = cli_gentemp(".");
maxattempts = optget(opts, "MaxAttempts")->numarg;
for(i = currver + 1; i <= newver; i++) {
for(j = 0; j < maxattempts; j++) {
int llogerr = logerr;
if(logerr)
llogerr = (j == maxattempts - 1);
ret = getpatch(dbname, tmpdir, i, hostname, ip, localip, proxy, port, user, pass, uas, ctimeout, rtimeout, mdat, llogerr, can_whitelist);
if(ret == 52 || ret == 58) {
memset(ip, 0, 16);
continue;
} else {
break;
}
}
if(ret)
break;
}
if(ret) {
cli_rmdirs(tmpdir);
free(tmpdir);
logg("^Incremental update failed, trying to download %s\n", cvdfile);
mirman_whitelist(mdat, 2);
ret = getcvd(cvdfile, newfile, hostname, ip, localip, proxy, port, user, pass, uas, newver, ctimeout, rtimeout, mdat, logerr, can_whitelist);
if(ret) {
free(newfile);
return ret;
}
snprintf(newdb, sizeof(newdb), "%s.cvd", dbname);
} else {
if(buildcld(tmpdir, dbname, newfile, optget(opts, "CompressLocalDatabase")->enabled) == -1) {
logg("!Can't create local database\n");
cli_rmdirs(tmpdir);
free(tmpdir);
free(newfile);
return 70; /* FIXME */
}
snprintf(newdb, sizeof(newdb), "%s.cld", dbname);
cli_rmdirs(tmpdir);
free(tmpdir);
}
}
if(!(current = cl_cvdhead(newfile))) {
logg("!Can't parse new database %s\n", newfile);
unlink(newfile);
free(newfile);
return 55; /* FIXME */
}
if(!nodb && !access(localname, R_OK) && unlink(localname)) {
logg("!Can't unlink %s. Please fix it and try again.\n", localname);
unlink(newfile);
free(newfile);
return 53;
}
#ifdef C_WINDOWS
if(!access(newdb, R_OK) && unlink(newdb)) {
logg("!Can't unlink %s. Please fix the problem manually and try again.\n", newdb);
unlink(newfile);
free(newfile);
return 53;
}
#endif
if(rename(newfile, newdb) == -1) {
logg("!Can't rename %s to %s: %s\n", newfile, newdb, strerror(errno));
unlink(newfile);
free(newfile);
return 57;
}
free(newfile);
logg("%s updated (version: %d, sigs: %d, f-level: %d, builder: %s)\n", newdb, current->version, current->sigs, current->fl, current->builder);
if(flevel < current->fl) {
logg("Your ClamAV installation is out of date.\n");
logg("Current functionality level = %d, recommended = %d\n", flevel, current->fl);
logg("A firmware upgrade might resolve this issue.\n");
logg("Also read http://sgkb.securecomputing.com/article.asp?article=11282&p=2\n");
}
*signo += current->sigs;
cl_cvdfree(current);
return 0;
}
int cli_cvdload(FILE *fs, struct cl_engine *engine, unsigned int *signo, unsigned int options, unsigned int dbtype, const char *filename, unsigned int chkonly)
{
struct cl_cvd cvd, dupcvd;
FILE *dupfs;
int ret;
time_t s_time;
int cfd;
struct cli_dbio dbio;
struct cli_dbinfo *dbinfo = NULL;
char *dupname;
dbio.hashctx = NULL;
cli_dbgmsg("in cli_cvdload()\n");
/* verify */
if((ret = cli_cvdverify(fs, &cvd, dbtype)))
return ret;
if(dbtype <= 1) {
/* check for duplicate db */
dupname = cli_strdup(filename);
if(!dupname)
return CL_EMEM;
dupname[strlen(dupname) - 2] = (dbtype == 1 ? 'v' : 'l');
if(!access(dupname, R_OK) && (dupfs = fopen(dupname, "rb"))) {
if((ret = cli_cvdverify(dupfs, &dupcvd, !dbtype))) {
fclose(dupfs);
free(dupname);
return ret;
}
fclose(dupfs);
if(dupcvd.version > cvd.version) {
cli_warnmsg("Detected duplicate databases %s and %s. The %s database is older and will not be loaded, you should manually remove it from the database directory.\n", filename, dupname, filename);
free(dupname);
return CL_SUCCESS;
} else if(dupcvd.version == cvd.version && !dbtype) {
cli_warnmsg("Detected duplicate databases %s and %s, please manually remove one of them\n", filename, dupname);
free(dupname);
return CL_SUCCESS;
}
}
free(dupname);
}
if(strstr(filename, "daily.")) {
time(&s_time);
if(cvd.stime > s_time) {
if(cvd.stime - (unsigned int ) s_time > 3600) {
cli_warnmsg("******************************************************\n");
cli_warnmsg("*** Virus database timestamp in the future! ***\n");
cli_warnmsg("*** Please check the timezone and clock settings ***\n");
cli_warnmsg("******************************************************\n");
}
} else if((unsigned int) s_time - cvd.stime > 604800) {
cli_warnmsg("**************************************************\n");
cli_warnmsg("*** The virus database is older than 7 days! ***\n");
cli_warnmsg("*** Please update it as soon as possible. ***\n");
cli_warnmsg("**************************************************\n");
}
engine->dbversion[0] = cvd.version;
engine->dbversion[1] = cvd.stime;
}
if(cvd.fl > cl_retflevel()) {
cli_warnmsg("***********************************************************\n");
cli_warnmsg("*** This version of the ClamAV engine is outdated. ***\n");
cli_warnmsg("*** DON'T PANIC! Read http://www.clamav.net/support/faq ***\n");
cli_warnmsg("***********************************************************\n");
}
cfd = fileno(fs);
dbio.chkonly = 0;
if(dbtype == 2)
ret = cli_tgzload(cfd, engine, signo, options | CL_DB_UNSIGNED, &dbio, NULL);
else
ret = cli_tgzload(cfd, engine, signo, options | CL_DB_OFFICIAL, &dbio, NULL);
if(ret != CL_SUCCESS)
return ret;
dbinfo = engine->dbinfo;
if(!dbinfo || !dbinfo->cvd || (dbinfo->cvd->version != cvd.version) || (dbinfo->cvd->sigs != cvd.sigs) || (dbinfo->cvd->fl != cvd.fl) || (dbinfo->cvd->stime != cvd.stime)) {
cli_errmsg("cli_cvdload: Corrupted CVD header\n");
return CL_EMALFDB;
}
dbinfo = engine->dbinfo ? engine->dbinfo->next : NULL;
if(!dbinfo) {
cli_errmsg("cli_cvdload: dbinfo error\n");
return CL_EMALFDB;
}
dbio.chkonly = chkonly;
if(dbtype == 2)
options |= CL_DB_UNSIGNED;
else
options |= CL_DB_SIGNED | CL_DB_OFFICIAL;
ret = cli_tgzload(cfd, engine, signo, options, &dbio, dbinfo);
while(engine->dbinfo) {
dbinfo = engine->dbinfo;
engine->dbinfo = dbinfo->next;
mpool_free(engine->mempool, dbinfo->name);
mpool_free(engine->mempool, dbinfo->hash);
if(dbinfo->cvd)
cl_cvdfree(dbinfo->cvd);
mpool_free(engine->mempool, dbinfo);
}
return ret;
}
