/* AgentdStart v0.2, 2005/11/09
* Starts the agent daemon.
*/
void AgentdStart(char *dir, int uid, int gid, char *user, char *group)
{
int rc = 0;
int pid = 0;
int maxfd = 0;
fd_set fdset;
struct timeval fdtimeout;
pid = getpid();
available_server = 0;
/* Going Daemon */
if (!run_foreground)
{
nowDaemon();
goDaemonLight();
}
/* Setting group ID */
if(Privsep_SetGroup(gid) < 0)
ErrorExit(SETGID_ERROR, ARGV0, group);
/* chrooting */
if(Privsep_Chroot(dir) < 0)
ErrorExit(CHROOT_ERROR, ARGV0, dir);
nowChroot();
if(Privsep_SetUser(uid) < 0)
ErrorExit(SETUID_ERROR, ARGV0, user);
/* Create the queue. In this case we are going to create
* and read from it
* Exit if fails.
*/
if((agt->m_queue = StartMQ(DEFAULTQUEUE, READ)) < 0)
ErrorExit(QUEUE_ERROR, ARGV0, DEFAULTQUEUE, strerror(errno));
maxfd = agt->m_queue;
agt->sock = -1;
/* Creating PID file */
if(CreatePID(ARGV0, getpid()) < 0)
merror(PID_ERROR,ARGV0);
/* Reading the private keys */
verbose(ENC_READ, ARGV0);
OS_ReadKeys(&keys);
OS_StartCounter(&keys);
/* cmoraes : changed the following call to
os_write_agent_info(keys.keyentries[0]->name, NULL, keys.keyentries[0]->id);
*/
os_write_agent_info(keys.keyentries[0]->name, NULL, keys.keyentries[0]->id,
agt->profile);
/* Start up message */
verbose(STARTUP_MSG, ARGV0, (int)getpid());
/* Initial random numbers */
#ifdef __OpenBSD__
srandomdev();
#else
srandom( time(0) + getpid()+ pid + getppid());
#endif
random();
/* Connecting UDP */
rc = 0;
while(rc < agt->rip_id)
{
verbose("%s: INFO: Server IP Address: %s", ARGV0, agt->rip[rc]);
rc++;
}
/* Trying to connect to the server */
if(!connect_server(0))
{
ErrorExit(UNABLE_CONN, ARGV0);
}
/* Setting max fd for select */
if(agt->sock > maxfd)
{
maxfd = agt->sock;
}
/* Connecting to the execd queue */
if(agt->execdq == 0)
{
if((agt->execdq = StartMQ(EXECQUEUE, WRITE)) < 0)
{
merror("%s: INFO: Unable to connect to the active response "
"queue (disabled).", ARGV0);
agt->execdq = -1;
}
}
/* Trying to connect to server */
os_setwait();
start_agent(1);
os_delwait();
/* Sending integrity message for agent configs */
intcheck_file(OSSECCONF, dir);
intcheck_file(OSSEC_DEFINES, dir);
/* Sending first notification */
run_notify();
/* Maxfd must be higher socket +1 */
maxfd++;
/* monitor loop */
while(1)
{
/* Monitoring all available sockets from here */
FD_ZERO(&fdset);
FD_SET(agt->sock, &fdset);
FD_SET(agt->m_queue, &fdset);
fdtimeout.tv_sec = 1;
fdtimeout.tv_usec = 0;
/* Continuously send notifications */
run_notify();
/* Wait with a timeout for any descriptor */
rc = select(maxfd, &fdset, NULL, NULL, &fdtimeout);
if(rc == -1)
{
ErrorExit(SELECT_ERROR, ARGV0);
}
else if(rc == 0)
{
continue;
}
/* For the receiver */
if(FD_ISSET(agt->sock, &fdset))
{
receive_msg();
}
/* For the forwarder */
if(FD_ISSET(agt->m_queue, &fdset))
{
EventForward();
}
}
}
/* run_notify: Send periodically notification to server */
void run_notify()
{
char keep_alive_random[1024];
char tmp_msg[OS_SIZE_1024 +1];
char *uname;
char *shared_files;
os_md5 md5sum;
keep_alive_random[0] = '\0';
time_t curr_time;
curr_time = time(0);
#ifndef ONEWAY
/* Check if the server has responded */
if((curr_time - available_server) > (3*NOTIFY_TIME))
{
/* If response is not available, set lock and
* wait for it.
*/
verbose(SERVER_UNAV, ARGV0);
os_setwait();
/* Send sync message */
start_agent(0);
verbose(SERVER_UP, ARGV0);
os_delwait();
}
#endif
/* Check if time has elapsed */
if((curr_time - g_saved_time) < (NOTIFY_TIME - 120))
{
return;
}
g_saved_time = curr_time;
debug1("%s: DEBUG: Sending agent notification.", ARGV0);
/* Send the message.
* Message is going to be the
* uname\n checksum file\n checksum file\n
*/
/* Getting uname */
uname = getuname();
if(!uname)
{
merror(MEM_ERROR,ARGV0);
return;
}
/* get shared files */
shared_files = getsharedfiles();
if(!shared_files)
{
shared_files = strdup("\0");
if(!shared_files)
{
free(uname);
merror(MEM_ERROR,ARGV0);
return;
}
}
rand_keepalive_str2(keep_alive_random, 700);
/* creating message */
if((File_DateofChange(AGENTCONFIGINT) > 0 ) &&
(OS_MD5_File(AGENTCONFIGINT, md5sum) == 0))
{
snprintf(tmp_msg, OS_SIZE_1024, "#!-%s / %s\n%s\n%s",
uname, md5sum, shared_files, keep_alive_random);
}
else
{
snprintf(tmp_msg, OS_SIZE_1024, "#!-%s\n%s\n%s",
uname, shared_files, keep_alive_random);
}
/* Sending status message */
send_msg(0, tmp_msg);
free(uname);
free(shared_files);
return;
}
/* Locally starts (after service/win init) */
int local_start()
{
int debug_level;
int accept_manager_commands = 0;
char *cfg = DEFAULTCPATH;
WSADATA wsaData;
DWORD threadID;
DWORD threadID2;
/* Starting logr */
logr = (agent *)calloc(1, sizeof(agent));
if(!logr)
{
ErrorExit(MEM_ERROR, ARGV0);
}
logr->port = DEFAULT_SECURE;
/* Getting debug level */
debug_level = getDefine_Int("windows","debug", 0, 2);
while(debug_level != 0)
{
nowDebug();
debug_level--;
}
accept_manager_commands = getDefine_Int("logcollector",
"remote_commands", 0, 1);
/* Configuration file not present */
if(File_DateofChange(cfg) < 0)
ErrorExit("%s: Configuration file '%s' not found",ARGV0,cfg);
/* Starting Winsock */
if (WSAStartup(MAKEWORD(2, 0), &wsaData) != 0)
{
ErrorExit("%s: WSAStartup() failed", ARGV0);
}
/* Read agent config */
debug1("%s: DEBUG: Reading agent configuration.", ARGV0);
if(ClientConf(cfg) < 0)
{
ErrorExit(CLIENT_ERROR,ARGV0);
}
if(logr->notify_time == 0)
{
logr->notify_time = NOTIFY_TIME;
}
if(logr->max_time_reconnect_try == 0 )
{
logr->max_time_reconnect_try = NOTIFY_TIME * 3;
}
if(logr->max_time_reconnect_try <= logr->notify_time)
{
logr->max_time_reconnect_try = (logr->notify_time * 3);
verbose("%s Max time to reconnect can't be less than notify_time(%d), using notify_time*3 (%d)",ARGV0,logr->notify_time,logr->max_time_reconnect_try);
}
verbose("%s Using notify time: %d and max time to reconnect: %d",ARGV0,logr->notify_time,logr->max_time_reconnect_try);
/* Reading logcollector config file */
debug1("%s: DEBUG: Reading logcollector configuration.", ARGV0);
if(LogCollectorConfig(cfg, accept_manager_commands) < 0)
{
ErrorExit(CONFIG_ERROR, ARGV0, cfg);
}
/* Checking auth keys */
if(!OS_CheckKeys())
{
ErrorExit(AG_NOKEYS_EXIT, ARGV0);
}
/* If there is not file to monitor, create a clean entry
* for the mark messages.
*/
if(logff == NULL)
{
os_calloc(2, sizeof(logreader), logff);
logff[0].file = NULL;
logff[0].ffile = NULL;
logff[0].logformat = NULL;
logff[0].fp = NULL;
logff[1].file = NULL;
logff[1].logformat = NULL;
merror(NO_FILE, ARGV0);
}
/* Reading execd config. */
if(!WinExecd_Start())
{
logr->execdq = -1;
}
/* Reading keys */
verbose(ENC_READ, ARGV0);
OS_ReadKeys(&keys);
OS_StartCounter(&keys);
os_write_agent_info(keys.keyentries[0]->name, NULL, keys.keyentries[0]->id, NULL);
/* Initial random numbers */
srandom(time(0));
random();
/* Socket connection */
logr->sock = -1;
StartMQ(NULL, 0);
/* Starting mutex */
debug1("%s: DEBUG: Creating thread mutex.", ARGV0);
hMutex = CreateMutex(NULL, FALSE, NULL);
if(hMutex == NULL)
{
ErrorExit("%s: Error creating mutex.", ARGV0);
}
/* Starting syscheck thread */
if(CreateThread(NULL,
0,
(LPTHREAD_START_ROUTINE)skthread,
NULL,
0,
(LPDWORD)&threadID) == NULL)
{
merror(THREAD_ERROR, ARGV0);
}
/* Checking if server is connected */
os_setwait();
start_agent(1);
os_delwait();
/* Sending integrity message for agent configs */
intcheck_file(cfg, "");
intcheck_file(OSPATROL_DEFINES, "");
/* Starting receiver thread */
if(CreateThread(NULL,
0,
(LPTHREAD_START_ROUTINE)receiver_thread,
NULL,
0,
(LPDWORD)&threadID2) == NULL)
{
merror(THREAD_ERROR, ARGV0);
}
/* Sending agent information message */
send_win32_info(time(0));
/* Startting logcollector -- main process here */
LogCollectorStart();
WSACleanup();
return(0);
}
