source/ihost/ihost.c

/* 
 * i-scream central monitoring system
 * Copyright (C) 2000-2002 i-scream
 * 
 * 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., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 */

#include <stdio.h>
#include <stdlib.h>
#include <sys/types.h>
#include <unistd.h>
#include <syslog.h>
#include <netinet/in.h>
#include "ukcprog.h"
#include <netdb.h>
#include <string.h>
#include "statgrab.h"
#include <time.h>
#include <sys/socket.h>
#include <arpa/inet.h>
#include <syslog.h>

#define VERSION_NO "0.8"
#define RECONFIGURE_RETURN_CODE 2
#define UDP_MAX_PACKET_SIZE 8192
#define PID_FILE "/var/tmp/.ihost.pid"

#define logmessage(level, ...) do { cur_level = level; errf(__VA_ARGS__); } while (0)

typedef struct{
        int fm_port;
        char *fm_host;

        char *my_ip;    
        char *my_fqdn;
        char *server_fqdn;
        int server_udp_port;
        int server_tcp_port;
        char *last_modified;
        char *files_list;
        char *key;
        int udp_update_time;
        int tcp_update_time;

}ihost_state_t;

static int log_level;
static int cur_level;
static int syslog_logging;

void log_errors(const char *message){
        if(log_level>=cur_level){
                if (syslog_logging==1){
                        syslog(cur_level, "%s\n", message);
                }else{
                        fprintf(stderr, "%s\n", message);
                }
        }       
}

char* sock_comm(FILE *f_r, FILE *f_w, char *sendString){
        char *reply;
        logmessage(LOG_DEBUG, "Sending %s",sendString);
        fprintf(f_w, "%s\n", sendString);
        fflush(f_w);
        reply=fpgetline(f_r);
        if (reply!=NULL) logmessage(LOG_DEBUG, "Received %s", reply);
        /* Returns pointer to static buffer */
        return reply;
}       

int ihost_configure(ihost_state_t *ihost_state){
        struct sockaddr_in addr;
        struct in_addr haddr;
        struct sockaddr ip;
        int ip_len;
        int sd;
        FILE *fm_fd_r, *fm_fd_w;
        char *reply;
        char *reply_ptr;

        /* Check to see if anything needs to be free'd */
        if (ihost_state->my_fqdn!=NULL) free(ihost_state->my_fqdn);
        if (ihost_state->server_fqdn!=NULL) free(ihost_state->server_fqdn);
        if (ihost_state->last_modified!=NULL) free(ihost_state->last_modified);
        if (ihost_state->files_list!=NULL) free(ihost_state->files_list);

        logmessage(LOG_DEBUG, "Setting up configure socket to %s on port %d", ihost_state->fm_host, ihost_state->fm_port);
        if ((sd = socket(AF_INET, SOCK_STREAM, PF_UNSPEC)) < 0) {
                logmessage(LOG_ERR, "Can't create AF_INET socket (%m)");
                return -1;
        }

        if (get_host_addr(ihost_state->fm_host, &haddr) != 0){
                logmessage(LOG_ERR, "Failed to resolve address %s (%m)", ihost_state->fm_host);
                return -1;
        }

        memset(&addr, 0, sizeof addr);
        addr.sin_family = AF_INET;
        memcpy(&addr.sin_addr, &haddr, sizeof haddr);
        addr.sin_port =  htons(ihost_state->fm_port);

        if (connect(sd, (struct sockaddr *)&addr, sizeof addr) != 0) {
                logmessage(LOG_ERR, "Failed to connect to %s on port %d (%m)", ihost_state->fm_host, ihost_state->fm_port);
                return -1;
        }

        /* Need to open 2 files, one for reading one for writing, as it gets confused if we only use 1 :) */
        if ((fm_fd_r=fdopen(sd,"r")) == NULL){
                logmessage(LOG_ERR, "Failed to open read stream (%m)");
                return -1;
        }

        if ((fm_fd_w=fdopen(dup(sd),"w")) == NULL){
                logmessage(LOG_ERR, "Failed to open write stream (%m)");
                return -1;
        }
        ip_len=sizeof ip;
        memset(&ip, 0, ip_len);
        if((getsockname(sd, &ip, &ip_len)) != 0){
                logmessage(LOG_ERR, "Failed to get IP address (%m)");
                return -1;
        }
        if (ip.sa_family!=AF_INET){
                logmessage(LOG_ERR, "sa family is wrong type");
                return -1;
        }
        
        if((ihost_state->my_ip=strdup(inet_ntoa(((struct sockaddr_in *)&ip)->sin_addr)))==NULL){
                logmessage(LOG_ERR, "Failed to get IP (%m)");
                return -1;
        }       
        
        reply=sock_comm(fm_fd_r, fm_fd_w, "STARTCONFIG");
        if ((reply==NULL) || (strncasecmp(reply, "OK", 2) != 0) ) {
                logmessage(LOG_ERR, "Server error on STARTCONFIG");     
                return -1;
        }

        reply=sock_comm(fm_fd_r, fm_fd_w, "LASTMODIFIED");
        if((reply== NULL) || (strncasecmp(reply, "ERROR", 5) ==0)){
                logmessage(LOG_ERR, "Server error on LASTMODIFIED (%m)");
                return -1;
        }
        if((ihost_state->last_modified=strdup(reply)) == NULL){
                logmessage(LOG_ERR, "strdup failed (%m)");
                return -1;
        }

        reply=sock_comm(fm_fd_r, fm_fd_w, "FILELIST");
        if((reply== NULL) || (strncasecmp(reply, "ERROR", 5) ==0)){
                logmessage(LOG_ERR, "Server error on FILELIST (%m)");
                return -1;
        }
        if((ihost_state->files_list=strdup(reply)) == NULL){
                logmessage(LOG_ERR, "strdup failed (%m)");
                return -1;
        }

        reply=sock_comm(fm_fd_r, fm_fd_w, "FQDN");
        if((reply== NULL) || (strncasecmp(reply, "ERROR", 5)==0)){
                logmessage(LOG_ERR, "Server error on FQDN (%m)");
                return -1;
        }
        if((ihost_state->my_fqdn=strdup(reply)) == NULL){
                logmessage(LOG_ERR, "strdup failed (%m)");
                return -1;
        }

        reply=sock_comm(fm_fd_r, fm_fd_w, "UDPUpdateTime");
        if(reply== NULL){
                logmessage(LOG_ERR, "Server error (%m)");
                return -1;
        }
        if (strncasecmp(reply, "ERROR", 5) != 0){
                ihost_state->udp_update_time=atoi(reply);
        }
        
        reply=sock_comm(fm_fd_r, fm_fd_w, "TCPUpdateTime");
        if(reply== NULL){
                logmessage(LOG_ERR, "Server error on TCPUpdateTime (%m)");
                return -1;
        }
        if (strncasecmp(reply, "ERROR", 5) != 0){
                ihost_state->tcp_update_time=atoi(reply);
        }

        reply=sock_comm(fm_fd_r, fm_fd_w, "ENDCONFIG");
        if(reply== NULL){
                logmessage(LOG_ERR, "Server error on ENDCONFIG (%m)");
                return -1;
        }

        reply=sock_comm(fm_fd_r, fm_fd_w, "FILTER");
        if((reply== NULL) || (strncasecmp(reply, "ERROR", 5)==0)){
                logmessage(LOG_ERR, "Server error FILTER failed (%m)");
                return -1;
        }
        reply_ptr=strchr(reply,';');
        if (reply_ptr==NULL){
                logmessage(LOG_ERR, "Incorrect data returned");
                return -1;
        }
        *reply_ptr='\0';
        if((ihost_state->server_fqdn=strdup(reply)) == NULL){
                logmessage(LOG_ERR, "strdup failed (%m)");
                return -1;
        }
        reply=reply_ptr + 1;
        reply_ptr=strchr(reply,';');
        if (reply_ptr==NULL){
                logmessage(LOG_ERR, "Incorrect data returned 2");
                return -1;
        }
        *reply_ptr='\0';
        ihost_state->server_udp_port=atoi(reply);
        reply=reply_ptr+1;
        ihost_state->server_tcp_port=atoi(reply);
        if ((ihost_state->server_tcp_port==0) || (ihost_state->server_udp_port==0)){
                logmessage(LOG_ERR, "Incorrect data returned 3 ");
                return -1;
        }

        reply=sock_comm(fm_fd_r, fm_fd_w, "END");
        if((reply== NULL) || (strncasecmp(reply, "ERROR", 5) ==0 )){
                logmessage(LOG_ERR, "Server error on END (%m)");
                return -1;
        }

        if(fclose(fm_fd_r) !=0){
                logmessage(LOG_ERR, "Failed to close read FD (%m)");
                return -1;
        }
        if(fclose(fm_fd_w) !=0){
                logmessage(LOG_ERR, "Failed to close write FD (%m)");
                return -1;
        }

        return 0;
}

int heartbeat(ihost_state_t *ihost_state){
        struct sockaddr_in addr;
        struct in_addr haddr;
        int sd;
        FILE *fm_fd_r, *fm_fd_w;
        char *reply;
        int exitcode=0;

        logmessage(LOG_DEBUG, "Setting up configure socket to %s on port %d", ihost_state->server_fqdn, ihost_state->server_tcp_port);
        if ((sd = socket(AF_INET, SOCK_STREAM, PF_UNSPEC)) < 0) {
                logmessage(LOG_ERR, "Can't create AF_INET socket (%m)");
                return -1;
        }

        if (get_host_addr(ihost_state->server_fqdn, &haddr) != 0){
                logmessage(LOG_ERR, "Failed to resolve address %s (%m)", ihost_state->server_fqdn);
                return -1;
        }

        memset(&addr, 0, sizeof addr);
        addr.sin_family = AF_INET;
        memcpy(&addr.sin_addr, &haddr, sizeof haddr);
        addr.sin_port =  htons(ihost_state->server_tcp_port);

        if (connect(sd, (struct sockaddr *)&addr, sizeof addr) != 0) {
                logmessage(LOG_ERR, "Failed to connect to %s on port %d (%m)", ihost_state->server_fqdn, ihost_state->server_tcp_port);
                return -1;
        }

        /* Need to open 2 files, one for reading one for writing, as it gets confused if we only use 1 :) */
        if ((fm_fd_r=fdopen(sd,"r")) == NULL){
                logmessage(LOG_ERR, "Failed to open stream (%m)");
                return -1;
        }

        if ((fm_fd_w=fdopen(dup(sd),"w")) == NULL){
                logmessage(LOG_ERR, "Failed to open stream (%m)");
                return -1;
        }

        reply=sock_comm(fm_fd_r, fm_fd_w, "HEARTBEAT");
        if ((reply==NULL) || (strncasecmp(reply, "ERROR", 5) == 0) ) {
                logmessage(LOG_ERR, "Server error on HEARTBEAT");
                return -1;
        }

        reply=sock_comm(fm_fd_r, fm_fd_w, "CONFIG");
        if ((reply==NULL) || (strncasecmp(reply, "ERROR", 5) == 0) ) {
                logmessage(LOG_ERR, "Server error on CONFIG");
                return -1;
        }

        reply=sock_comm(fm_fd_r, fm_fd_w, ihost_state->files_list);
        if ((reply==NULL) || (strncasecmp(reply, "OK", 2) != 0) ) {
                logmessage(LOG_ERR, "Server error on fileslist");
                return -1;
        }

        reply=sock_comm(fm_fd_r, fm_fd_w, ihost_state->last_modified);
        if (reply==NULL) {
                logmessage(LOG_ERR, "Server error NULL recieved on lastmodified");
                return -1;
        }
        if (strncasecmp(reply, "ERROR", 5) == 0){
        /* Means the config has changed */
                logmessage(LOG_INFO, "Recieved ERROR from server for a reconfigure required");
                exitcode=RECONFIGURE_RETURN_CODE;
        }

        reply=sock_comm(fm_fd_r, fm_fd_w, "KEY");
        if ((reply==NULL) || (strncasecmp(reply, "ERROR", 5) == 0) ) {
                logmessage(LOG_ERR, "Server error on KEY");
                return -1;
        }
        if (ihost_state->key!=NULL) free(ihost_state->key);
 
        if((ihost_state->key=strdup(reply)) == NULL){
                logmessage(LOG_ERR, "strdup failed (%m)");
                return -1;
        }

        reply=sock_comm(fm_fd_r, fm_fd_w, "ENDHEARTBEAT");
        if((reply== NULL) || (strncasecmp(reply, "ERROR", 5) ==0 )){
                logmessage(LOG_ERR, "Server error on ENDHEARTBEAT (%m)");
                return -1;
        }

        fflush(fm_fd_r);
        fflush(fm_fd_w);

        if(fclose(fm_fd_r) !=0){
                logmessage(LOG_ERR, "Failed to close read FD (%m)");
                return -1;
        }
        if(fclose(fm_fd_w) !=0){
                logmessage(LOG_ERR, "Failed to close write FD (%m)");
                return -1;
        }

        return exitcode;                
}

char *stat_grab(ihost_state_t *ihost_state, int counter){
#define NUM_STATS 9
        char *stats[NUM_STATS];
        char *xml_data=NULL;
        char *xml_data_p;
        int xml_size=0;
        int x=0;

        logmessage(LOG_DEBUG,"get_cpu_stats");  
        stats[0]=get_cpu_stats();
        logmessage(LOG_DEBUG,"get_disk_stats"); 
        stats[1]=get_disk_stats();
        logmessage(LOG_DEBUG,"get_load_stats"); 
        stats[2]=get_load_stats();      
        logmessage(LOG_DEBUG,"get_memory_stats");               
        stats[3]=get_memory_stats();
        logmessage(LOG_DEBUG,"get_os_info");    
        stats[4]=get_os_info();
        logmessage(LOG_DEBUG,"get_page_stats"); 
        stats[5]=get_page_stats();
        logmessage(LOG_DEBUG,"get_process_stats");      
        stats[6]=get_process_stats();
        logmessage(LOG_DEBUG,"get_swap_stats"); 
        stats[7]=get_swap_stats();
        logmessage(LOG_DEBUG,"get_user_stats"); 
        stats[8]=get_user_stats();
        

        for(x=0;x<NUM_STATS;x++){
                if(stats[x]==NULL){
                        logmessage(LOG_ERR,"Function returned NULL");
                        return NULL;
                }
                xml_size+=strlen(stats[x]);
        }

        xml_data=malloc(xml_size+1);
        xml_data=strcpy(xml_data, stats[0]);
        free(stats[0]);
        for(x=1;x<NUM_STATS;x++){
                strcat(xml_data, stats[x]);
                free(stats[x]);
        }

        xml_data_p=xml_data;
        xml_data=strf("<packet seq_no=\"%d\" machine_name=\"%s\" date=\"%ld\" type=\"data\" ip=\"%s\" key=\"%s\">%s</packet>", counter, ihost_state->my_fqdn, time(NULL), ihost_state->my_ip, ihost_state->key, xml_data);
        free(xml_data_p); 

        logmessage(LOG_DEBUG,"Generated XML Data of : %s", xml_data);   
        return xml_data;
}

int send_stats(ihost_state_t *ihost_state, char *data_stream){
        struct sockaddr_in addr;
        struct in_addr haddr;

        int sd;
        size_t len;

        len=strlen(data_stream);
        if(len>UDP_MAX_PACKET_SIZE){
                logmessage(LOG_ERR, "Too big to send to server. Please reconfigure client and server and recompile");
                exit(1);
        }
        logmessage(LOG_DEBUG,"Resolving IP of server"); 
        if (get_host_addr(ihost_state->server_fqdn, &haddr) != 0){
                logmessage(LOG_ERR, "Failed to resolve address %s (%m)", ihost_state->server_fqdn);
                return -1;
        }
        logmessage(LOG_DEBUG,"Creating UDP socket to %s on %d",ihost_state->server_fqdn, ihost_state->server_udp_port);
        if((sd=socket(PF_INET, SOCK_DGRAM, IPPROTO_UDP)) < 0){
                logmessage(LOG_ERR, "failed to create UDP socket (%m)");
                return -1;
        }

        memset(&addr, 0, sizeof(addr));
        addr.sin_family=AF_INET;
        memcpy((char *)&addr.sin_addr, &haddr, sizeof haddr);
        addr.sin_port =  htons(ihost_state->server_udp_port);

        logmessage(LOG_INFO,"Sending packet : %s", data_stream);
        if((sendto(sd, data_stream, len, 0, (struct sockaddr *) &addr, sizeof(addr))) != len){
                logmessage(LOG_ERR, "Send the wrong number of bytes (%m)");
                return -1;
        }

        close(sd);

        return 0;       
}

void usage(char *progname){
        fprintf(stderr, "Usage %s [options] server port\n", progname);
        fprintf(stderr, "Options\n");
        fprintf(stderr, "  -v           Verbose, the more v flags the more verbose, eg -vv\n");
        fprintf(stderr, "  -d           Daemon mode, self backgrounding\n");
        fprintf(stderr, "  -s           Send errors to syslog\n");
        fprintf(stderr, "  -V           Print version number\n");
        fprintf(stderr, "  -h           Prints this help page\n");      
        exit(1);        
}

int main(int argc, char **argv){
        ihost_state_t ihost_state;
        int heartbeat_exit;
        int counter=0;
        long udp_time=0, tcp_time=0, stat_grab_time=0, cur_time=0;
        int sleep_delay=0;
        char *xml_stats;
        pid_t pid;
        int cmdopt;
        extern int optind;
        int verbose=0, daemon=0;
        extern int syslog_logging;
        extern int log_level;
        extern int cur_level;
        FILE *f;

        log_level=1;
        cur_level=1;
        syslog_logging=0;

        errf_set_ofunc(log_errors);
        /* NULL'ify so i can tell if i need to free it or not */
        ihost_state.fm_host=NULL;
        ihost_state.my_fqdn=NULL;
        ihost_state.server_fqdn=NULL;
        ihost_state.last_modified=NULL;
        ihost_state.files_list=NULL;
        ihost_state.key=NULL;

        errf_set_progname(argv[0]);
        

        while((cmdopt=getopt(argc, argv, "vdshV")) != -1){
                switch(cmdopt){
                        case 'v':
                                verbose++;
                                break;
                        
                        case 'd':
                                /* Force syslog logging since stderr will be closed in this case */
                                syslog_logging=1;
                                daemon=1;
                                break;
                        
                        case 's':
                                syslog_logging=1;
                                break;
        
                        case 'h':
                                usage(argv[0]);
                                break;

                        case 'V':
                                errf("%s version %s",argv[0], VERSION_NO);
                                break;

                        default:
                                usage(argv[0]);
                                exit(1);
                }
        }

        if(argc!=optind+2){
                usage(argv[0]);
                exit(1);
        }
        ihost_state.fm_host=argv[optind];
        ihost_state.fm_port=atoi(argv[optind+1]);
        if(ihost_state.fm_port==0){
                errf("Invalid port number");
                usage(argv[0]);
        }

        if(daemon==1){
                pid=fork();
                if(pid==-1){
                        errf("Fork failed, can't background. Exiting");
                        exit(1);
                }else if(pid!=0){
                        /* Parent process */
                        return 0;
                }
                /* We should now be in the background*/
                if(setsid()==-1){
                        errf("setsid failed (%m)");
                        exit(1);
                }
                fclose(stdin);
                fclose(stdout);
                fclose(stderr);
        }

        if(syslog_logging==1){
                   openlog(errf_get_progname(),0,LOG_ERR);
                   setlogmask(LOG_UPTO(LOG_DEBUG));
        }
                
        switch(verbose){
                case 0:
                        /* Critical errors + */
                        log_level=LOG_ERR;
                        break;
                case 1:
                        /* Recoverable errors */
                        log_level=LOG_WARNING;
                        break;
                case 2: 
                        /* Print stuff like the XML packets */
                        log_level=LOG_INFO;
                        break;
                default:
                        /* Must have lots of v's */
                        /* Print out everything its doing */
                        log_level=LOG_DEBUG;
                        break;
        }

        logmessage(LOG_DEBUG,"Writing PID FILE");
        pid=getpid();
        if((f=fopen(PID_FILE,"w")) == NULL){
                logmessage(LOG_WARNING, "Failed to write PID file");
        }else{
                if((fprintf(f,"%d",(int)pid)) > 0 ){
                        logmessage(LOG_WARNING, "Failed to write PID file");
                }
                if((fclose(f))!=0){
                        logmessage(LOG_ERR, "failed to close PID file");
                        exit(1);
                }
        }

        if(ihost_configure(&ihost_state)!=0){
                logmessage(LOG_ERR,"configure failed");
                /* Ok, ideally we prob should have 2 copies of the structure and carry on if this
                happens.. But we dont :) (at the moment) */
                exit(1);
        }

        for(;;){
                cur_time=time(NULL);
                if(cur_time>=tcp_time){
                        logmessage(LOG_DEBUG,"Sending heartbeat");
                        heartbeat_exit=heartbeat(&ihost_state);
                        if(heartbeat_exit==RECONFIGURE_RETURN_CODE){
                                logmessage(LOG_INFO,"heartbeat needs to be reconfigured");
                                ihost_configure(&ihost_state);
                                udp_time=0;
                        }
                        if(heartbeat_exit==-1){
                                logmessage(LOG_ERR,"Heartbeat failed");
                                exit(1);
                        }
                        tcp_time=time(NULL)+ihost_state.tcp_update_time;
                        logmessage(LOG_DEBUG,"next tcp time should be %d", tcp_time);
                }

                if(cur_time>=udp_time){
                        logmessage(LOG_DEBUG,"Sending udp data");
                        /* Work out how long it takes to get the stats for next time round
                           so the sleep time can be adjusted accordingly */
                        stat_grab_time=time(NULL);
                        if((xml_stats=stat_grab(&ihost_state, counter++)) == NULL){
                                logmessage(LOG_ERR,"Failed to get stats (%m)");
                                exit(1);
                        }
                        stat_grab_time=time(NULL)-stat_grab_time;
                        send_stats(&ihost_state, xml_stats);
                        free(xml_stats);
                        udp_time=time(NULL)+ihost_state.udp_update_time-stat_grab_time;
                        logmessage(LOG_DEBUG,"next udp time should be %d", udp_time);
                }

                if(tcp_time<udp_time){
                        sleep_delay=tcp_time-time(NULL);
                }else{
                        sleep_delay=udp_time-time(NULL);
                }
                logmessage(LOG_DEBUG,"Sleeping for %d", sleep_delay);
                if(sleep_delay>0) sleep(sleep_delay);
        }
        return 0;
}

Revision:	1.22
Committed:	Tue May 21 16:04:34 2002 UTC (22 years, 7 months ago) by pajs
Content type:	text/plain
Branch:	MAIN
Changes since 1.21:	+10 -9 lines
Log Message:	Critical bug fixes.
#	User	Rev	Content
1	tdb	1.11	/*
2			* i-scream central monitoring system
3			* Copyright (C) 2000-2002 i-scream
4			*
5			* This program is free software; you can redistribute it and/or
6			* modify it under the terms of the GNU General Public License
7			* as published by the Free Software Foundation; either version 2
8			* of the License, or (at your option) any later version.
9			*
10			* This program is distributed in the hope that it will be useful,
11			* but WITHOUT ANY WARRANTY; without even the implied warranty of
12			* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13			* GNU General Public License for more details.
14			*
15			* You should have received a copy of the GNU General Public License
16			* along with this program; if not, write to the Free Software
17			* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
18			*/
19
20	pajs	1.1	#include <stdio.h>
21			#include <stdlib.h>
22	pajs	1.18	#include <sys/types.h>
23	pajs	1.1	#include <unistd.h>
24			#include <syslog.h>
25			#include <netinet/in.h>
26	pajs	1.9	#include "ukcprog.h"
27	pajs	1.1	#include <netdb.h>
28	pajs	1.12	#include <string.h>
29	pajs	1.9	#include "statgrab.h"
30	pajs	1.12	#include <time.h>
31	pajs	1.14	#include <sys/socket.h>
32	pajs	1.16	#include <arpa/inet.h>
33	pajs	1.18	#include <syslog.h>
34	pajs	1.1
35	pajs	1.22	#define VERSION_NO "0.8"
36	pajs	1.4	#define RECONFIGURE_RETURN_CODE 2
37	pajs	1.9	#define UDP_MAX_PACKET_SIZE 8192
38	pajs	1.19	#define PID_FILE "/var/tmp/.ihost.pid"
39	pajs	1.4
40	pajs	1.18	#define logmessage(level, ...) do { cur_level = level; errf(__VA_ARGS__); } while (0)
41
42	pajs	1.1	typedef struct{
43			int fm_port;
44			char *fm_host;
45	pajs	1.16
46			char *my_ip;
47	pajs	1.1	char *my_fqdn;
48			char *server_fqdn;
49			int server_udp_port;
50			int server_tcp_port;
51	pajs	1.4	char *last_modified;
52	pajs	1.1	char *files_list;
53			char *key;
54			int udp_update_time;
55			int tcp_update_time;
56
57			}ihost_state_t;
58
59	pajs	1.18	static int log_level;
60			static int cur_level;
61			static int syslog_logging;
62
63			void log_errors(const char *message){
64			if(log_level>=cur_level){
65			if (syslog_logging==1){
66			syslog(cur_level, "%s\n", message);
67			}else{
68			fprintf(stderr, "%s\n", message);
69			}
70			}
71			}
72
73	pajs	1.7	char* sock_comm(FILE f_r, FILE f_w, char *sendString){
74	pajs	1.1	char *reply;
75	pajs	1.21	logmessage(LOG_DEBUG, "Sending %s",sendString);
76	pajs	1.7	fprintf(f_w, "%s\n", sendString);
77	pajs	1.2	fflush(f_w);
78			reply=fpgetline(f_r);
79	pajs	1.21	if (reply!=NULL) logmessage(LOG_DEBUG, "Received %s", reply);
80	pajs	1.1	/* Returns pointer to static buffer */
81			return reply;
82			}
83
84			int ihost_configure(ihost_state_t *ihost_state){
85			struct sockaddr_in addr;
86			struct in_addr haddr;
87	pajs	1.16	struct sockaddr ip;
88			int ip_len;
89	pajs	1.1	int sd;
90	pajs	1.2	FILE fm_fd_r, fm_fd_w;
91	pajs	1.1	char *reply;
92	pajs	1.2	char *reply_ptr;
93	pajs	1.1
94	pajs	1.5	/* Check to see if anything needs to be free'd */
95			if (ihost_state->my_fqdn!=NULL) free(ihost_state->my_fqdn);
96			if (ihost_state->server_fqdn!=NULL) free(ihost_state->server_fqdn);
97			if (ihost_state->last_modified!=NULL) free(ihost_state->last_modified);
98			if (ihost_state->files_list!=NULL) free(ihost_state->files_list);
99
100	pajs	1.18	logmessage(LOG_DEBUG, "Setting up configure socket to %s on port %d", ihost_state->fm_host, ihost_state->fm_port);
101	pajs	1.1	if ((sd = socket(AF_INET, SOCK_STREAM, PF_UNSPEC)) < 0) {
102	pajs	1.18	logmessage(LOG_ERR, "Can't create AF_INET socket (%m)");
103	pajs	1.1	return -1;
104			}
105
106			if (get_host_addr(ihost_state->fm_host, &haddr) != 0){
107	pajs	1.18	logmessage(LOG_ERR, "Failed to resolve address %s (%m)", ihost_state->fm_host);
108	pajs	1.1	return -1;
109			}
110
111	pajs	1.9	memset(&addr, 0, sizeof addr);
112	pajs	1.1	addr.sin_family = AF_INET;
113	pajs	1.9	memcpy(&addr.sin_addr, &haddr, sizeof haddr);
114	pajs	1.1	addr.sin_port = htons(ihost_state->fm_port);
115
116			if (connect(sd, (struct sockaddr *)&addr, sizeof addr) != 0) {
117	pajs	1.18	logmessage(LOG_ERR, "Failed to connect to %s on port %d (%m)", ihost_state->fm_host, ihost_state->fm_port);
118	pajs	1.1	return -1;
119			}
120
121	pajs	1.2	/* Need to open 2 files, one for reading one for writing, as it gets confused if we only use 1 :) */
122			if ((fm_fd_r=fdopen(sd,"r")) == NULL){
123	pajs	1.18	logmessage(LOG_ERR, "Failed to open read stream (%m)");
124	pajs	1.2	return -1;
125			}
126
127			if ((fm_fd_w=fdopen(dup(sd),"w")) == NULL){
128	pajs	1.18	logmessage(LOG_ERR, "Failed to open write stream (%m)");
129	pajs	1.1	return -1;
130			}
131	pajs	1.16	ip_len=sizeof ip;
132			memset(&ip, 0, ip_len);
133			if((getsockname(sd, &ip, &ip_len)) != 0){
134	pajs	1.18	logmessage(LOG_ERR, "Failed to get IP address (%m)");
135	pajs	1.16	return -1;
136			}
137			if (ip.sa_family!=AF_INET){
138	pajs	1.18	logmessage(LOG_ERR, "sa family is wrong type");
139	pajs	1.16	return -1;
140			}
141
142	pajs	1.22	if((ihost_state->my_ip=strdup(inet_ntoa(((struct sockaddr_in *)&ip)->sin_addr)))==NULL){
143	pajs	1.18	logmessage(LOG_ERR, "Failed to get IP (%m)");
144	pajs	1.16	return -1;
145			}
146	pajs	1.18
147	pajs	1.7	reply=sock_comm(fm_fd_r, fm_fd_w, "STARTCONFIG");
148	pajs	1.1	if ((reply==NULL) \|\| (strncasecmp(reply, "OK", 2) != 0) ) {
149	pajs	1.18	logmessage(LOG_ERR, "Server error on STARTCONFIG");
150	pajs	1.1	return -1;
151			}
152
153	pajs	1.7	reply=sock_comm(fm_fd_r, fm_fd_w, "LASTMODIFIED");
154	pajs	1.2	if((reply== NULL) \|\| (strncasecmp(reply, "ERROR", 5) ==0)){
155	pajs	1.18	logmessage(LOG_ERR, "Server error on LASTMODIFIED (%m)");
156	pajs	1.1	return -1;
157			}
158	pajs	1.7	if((ihost_state->last_modified=strdup(reply)) == NULL){
159	pajs	1.18	logmessage(LOG_ERR, "strdup failed (%m)");
160	pajs	1.4	return -1;
161			}
162	pajs	1.18
163	pajs	1.7	reply=sock_comm(fm_fd_r, fm_fd_w, "FILELIST");
164	pajs	1.2	if((reply== NULL) \|\| (strncasecmp(reply, "ERROR", 5) ==0)){
165	pajs	1.18	logmessage(LOG_ERR, "Server error on FILELIST (%m)");
166	pajs	1.1	return -1;
167			}
168	pajs	1.7	if((ihost_state->files_list=strdup(reply)) == NULL){
169	pajs	1.18	logmessage(LOG_ERR, "strdup failed (%m)");
170	pajs	1.6	return -1;
171			}
172	pajs	1.1
173	pajs	1.7	reply=sock_comm(fm_fd_r, fm_fd_w, "FQDN");
174	pajs	1.2	if((reply== NULL) \|\| (strncasecmp(reply, "ERROR", 5)==0)){
175	pajs	1.18	logmessage(LOG_ERR, "Server error on FQDN (%m)");
176	pajs	1.1	return -1;
177			}
178			if((ihost_state->my_fqdn=strdup(reply)) == NULL){
179	pajs	1.18	logmessage(LOG_ERR, "strdup failed (%m)");
180	pajs	1.1	return -1;
181			}
182
183	pajs	1.7	reply=sock_comm(fm_fd_r, fm_fd_w, "UDPUpdateTime");
184	pajs	1.1	if(reply== NULL){
185	pajs	1.18	logmessage(LOG_ERR, "Server error (%m)");
186	pajs	1.1	return -1;
187			}
188			if (strncasecmp(reply, "ERROR", 5) != 0){
189			ihost_state->udp_update_time=atoi(reply);
190			}
191	pajs	1.18
192	pajs	1.7	reply=sock_comm(fm_fd_r, fm_fd_w, "TCPUpdateTime");
193	pajs	1.1	if(reply== NULL){
194	pajs	1.18	logmessage(LOG_ERR, "Server error on TCPUpdateTime (%m)");
195	pajs	1.1	return -1;
196			}
197			if (strncasecmp(reply, "ERROR", 5) != 0){
198			ihost_state->tcp_update_time=atoi(reply);
199			}
200
201	pajs	1.7	reply=sock_comm(fm_fd_r, fm_fd_w, "ENDCONFIG");
202	pajs	1.1	if(reply== NULL){
203	pajs	1.18	logmessage(LOG_ERR, "Server error on ENDCONFIG (%m)");
204	pajs	1.1	return -1;
205			}
206
207	pajs	1.7	reply=sock_comm(fm_fd_r, fm_fd_w, "FILTER");
208	pajs	1.2	if((reply== NULL) \|\| (strncasecmp(reply, "ERROR", 5)==0)){
209	pajs	1.18	logmessage(LOG_ERR, "Server error FILTER failed (%m)");
210	pajs	1.2	return -1;
211			}
212			reply_ptr=strchr(reply,';');
213			if (reply_ptr==NULL){
214	pajs	1.18	logmessage(LOG_ERR, "Incorrect data returned");
215	pajs	1.2	return -1;
216			}
217			*reply_ptr='\0';
218			if((ihost_state->server_fqdn=strdup(reply)) == NULL){
219	pajs	1.18	logmessage(LOG_ERR, "strdup failed (%m)");
220	pajs	1.2	return -1;
221			}
222	pajs	1.8	reply=reply_ptr + 1;
223	pajs	1.2	reply_ptr=strchr(reply,';');
224			if (reply_ptr==NULL){
225	pajs	1.18	logmessage(LOG_ERR, "Incorrect data returned 2");
226	pajs	1.2	return -1;
227			}
228			*reply_ptr='\0';
229			ihost_state->server_udp_port=atoi(reply);
230	pajs	1.8	reply=reply_ptr+1;
231	pajs	1.2	ihost_state->server_tcp_port=atoi(reply);
232			if ((ihost_state->server_tcp_port==0) \|\| (ihost_state->server_udp_port==0)){
233	pajs	1.18	logmessage(LOG_ERR, "Incorrect data returned 3 ");
234	pajs	1.2	return -1;
235			}
236
237	pajs	1.7	reply=sock_comm(fm_fd_r, fm_fd_w, "END");
238	pajs	1.2	if((reply== NULL) \|\| (strncasecmp(reply, "ERROR", 5) ==0 )){
239	pajs	1.18	logmessage(LOG_ERR, "Server error on END (%m)");
240	pajs	1.2	return -1;
241			}
242	pajs	1.1
243	pajs	1.2	if(fclose(fm_fd_r) !=0){
244	pajs	1.18	logmessage(LOG_ERR, "Failed to close read FD (%m)");
245	pajs	1.2	return -1;
246			}
247			if(fclose(fm_fd_w) !=0){
248	pajs	1.18	logmessage(LOG_ERR, "Failed to close write FD (%m)");
249	pajs	1.2	return -1;
250			}
251	pajs	1.1
252			return 0;
253			}
254	pajs	1.4
255			int heartbeat(ihost_state_t *ihost_state){
256			struct sockaddr_in addr;
257			struct in_addr haddr;
258			int sd;
259			FILE fm_fd_r, fm_fd_w;
260			char *reply;
261			int exitcode=0;
262
263	pajs	1.18	logmessage(LOG_DEBUG, "Setting up configure socket to %s on port %d", ihost_state->server_fqdn, ihost_state->server_tcp_port);
264	pajs	1.4	if ((sd = socket(AF_INET, SOCK_STREAM, PF_UNSPEC)) < 0) {
265	pajs	1.18	logmessage(LOG_ERR, "Can't create AF_INET socket (%m)");
266	pajs	1.4	return -1;
267			}
268
269			if (get_host_addr(ihost_state->server_fqdn, &haddr) != 0){
270	pajs	1.18	logmessage(LOG_ERR, "Failed to resolve address %s (%m)", ihost_state->server_fqdn);
271	pajs	1.4	return -1;
272			}
273
274	pajs	1.9	memset(&addr, 0, sizeof addr);
275	pajs	1.4	addr.sin_family = AF_INET;
276	pajs	1.9	memcpy(&addr.sin_addr, &haddr, sizeof haddr);
277	pajs	1.4	addr.sin_port = htons(ihost_state->server_tcp_port);
278
279			if (connect(sd, (struct sockaddr *)&addr, sizeof addr) != 0) {
280	pajs	1.18	logmessage(LOG_ERR, "Failed to connect to %s on port %d (%m)", ihost_state->server_fqdn, ihost_state->server_tcp_port);
281	pajs	1.4	return -1;
282			}
283
284			/* Need to open 2 files, one for reading one for writing, as it gets confused if we only use 1 :) */
285			if ((fm_fd_r=fdopen(sd,"r")) == NULL){
286	pajs	1.18	logmessage(LOG_ERR, "Failed to open stream (%m)");
287	pajs	1.4	return -1;
288			}
289
290			if ((fm_fd_w=fdopen(dup(sd),"w")) == NULL){
291	pajs	1.18	logmessage(LOG_ERR, "Failed to open stream (%m)");
292	pajs	1.4	return -1;
293			}
294
295	pajs	1.7	reply=sock_comm(fm_fd_r, fm_fd_w, "HEARTBEAT");
296	pajs	1.6	if ((reply==NULL) \|\| (strncasecmp(reply, "ERROR", 5) == 0) ) {
297	pajs	1.18	logmessage(LOG_ERR, "Server error on HEARTBEAT");
298	pajs	1.4	return -1;
299			}
300	pajs	1.9
301	pajs	1.7	reply=sock_comm(fm_fd_r, fm_fd_w, "CONFIG");
302	pajs	1.6	if ((reply==NULL) \|\| (strncasecmp(reply, "ERROR", 5) == 0) ) {
303	pajs	1.18	logmessage(LOG_ERR, "Server error on CONFIG");
304	pajs	1.4	return -1;
305			}
306
307			reply=sock_comm(fm_fd_r, fm_fd_w, ihost_state->files_list);
308			if ((reply==NULL) \|\| (strncasecmp(reply, "OK", 2) != 0) ) {
309	pajs	1.18	logmessage(LOG_ERR, "Server error on fileslist");
310	pajs	1.4	return -1;
311			}
312
313			reply=sock_comm(fm_fd_r, fm_fd_w, ihost_state->last_modified);
314			if (reply==NULL) {
315	pajs	1.18	logmessage(LOG_ERR, "Server error NULL recieved on lastmodified");
316	pajs	1.4	return -1;
317			}
318	pajs	1.6	if (strncasecmp(reply, "ERROR", 5) == 0){
319	pajs	1.4	/* Means the config has changed */
320	pajs	1.18	logmessage(LOG_INFO, "Recieved ERROR from server for a reconfigure required");
321	pajs	1.4	exitcode=RECONFIGURE_RETURN_CODE;
322			}
323	pajs	1.18
324	pajs	1.7	reply=sock_comm(fm_fd_r, fm_fd_w, "KEY");
325	pajs	1.6	if ((reply==NULL) \|\| (strncasecmp(reply, "ERROR", 5) == 0) ) {
326	pajs	1.18	logmessage(LOG_ERR, "Server error on KEY");
327	pajs	1.4	return -1;
328			}
329	pajs	1.5	if (ihost_state->key!=NULL) free(ihost_state->key);
330
331	pajs	1.7	if((ihost_state->key=strdup(reply)) == NULL){
332	pajs	1.18	logmessage(LOG_ERR, "strdup failed (%m)");
333	pajs	1.4	return -1;
334			}
335
336	pajs	1.7	reply=sock_comm(fm_fd_r, fm_fd_w, "ENDHEARTBEAT");
337	pajs	1.4	if((reply== NULL) \|\| (strncasecmp(reply, "ERROR", 5) ==0 )){
338	pajs	1.18	logmessage(LOG_ERR, "Server error on ENDHEARTBEAT (%m)");
339	pajs	1.4	return -1;
340			}
341
342	pajs	1.10	fflush(fm_fd_r);
343			fflush(fm_fd_w);
344
345	pajs	1.6	if(fclose(fm_fd_r) !=0){
346	pajs	1.18	logmessage(LOG_ERR, "Failed to close read FD (%m)");
347	pajs	1.6	return -1;
348			}
349			if(fclose(fm_fd_w) !=0){
350	pajs	1.18	logmessage(LOG_ERR, "Failed to close write FD (%m)");
351	pajs	1.6	return -1;
352			}
353
354	pajs	1.4	return exitcode;
355			}
356
357	pajs	1.9	char stat_grab(ihost_state_t ihost_state, int counter){
358			#define NUM_STATS 9
359			char *stats[NUM_STATS];
360			char *xml_data=NULL;
361			char *xml_data_p;
362	pajs	1.20	int xml_size=0;
363	pajs	1.9	int x=0;
364	pajs	1.18
365			logmessage(LOG_DEBUG,"get_cpu_stats");
366	pajs	1.9	stats[0]=get_cpu_stats();
367	pajs	1.18	logmessage(LOG_DEBUG,"get_disk_stats");
368	pajs	1.9	stats[1]=get_disk_stats();
369	pajs	1.18	logmessage(LOG_DEBUG,"get_load_stats");
370	pajs	1.9	stats[2]=get_load_stats();
371	pajs	1.18	logmessage(LOG_DEBUG,"get_memory_stats");
372	pajs	1.9	stats[3]=get_memory_stats();
373	pajs	1.18	logmessage(LOG_DEBUG,"get_os_info");
374	pajs	1.9	stats[4]=get_os_info();
375	pajs	1.18	logmessage(LOG_DEBUG,"get_page_stats");
376	pajs	1.9	stats[5]=get_page_stats();
377	pajs	1.18	logmessage(LOG_DEBUG,"get_process_stats");
378	pajs	1.9	stats[6]=get_process_stats();
379	pajs	1.18	logmessage(LOG_DEBUG,"get_swap_stats");
380	pajs	1.9	stats[7]=get_swap_stats();
381	pajs	1.18	logmessage(LOG_DEBUG,"get_user_stats");
382	pajs	1.9	stats[8]=get_user_stats();
383	pajs	1.20
384	pajs	1.9
385	pajs	1.20	for(x=0;x<NUM_STATS;x++){
386	pajs	1.9	if(stats[x]==NULL){
387	pajs	1.18	logmessage(LOG_ERR,"Function returned NULL");
388	pajs	1.9	return NULL;
389			}
390	pajs	1.20	xml_size+=strlen(stats[x]);
391			}
392
393	pajs	1.22	xml_data=malloc(xml_size+1);
394	pajs	1.20	xml_data=strcpy(xml_data, stats[0]);
395	pajs	1.22	free(stats[0]);
396	pajs	1.20	for(x=1;x<NUM_STATS;x++){
397			strcat(xml_data, stats[x]);
398	pajs	1.22	free(stats[x]);
399	pajs	1.9	}
400	pajs	1.20
401	pajs	1.9	xml_data_p=xml_data;
402	pajs	1.16	xml_data=strf("<packet seq_no=\"%d\" machine_name=\"%s\" date=\"%ld\" type=\"data\" ip=\"%s\" key=\"%s\">%s</packet>", counter, ihost_state->my_fqdn, time(NULL), ihost_state->my_ip, ihost_state->key, xml_data);
403	pajs	1.9	free(xml_data_p);
404	pajs	1.18
405			logmessage(LOG_DEBUG,"Generated XML Data of : %s", xml_data);
406	pajs	1.9	return xml_data;
407			}
408
409			int send_stats(ihost_state_t ihost_state, char data_stream){
410			struct sockaddr_in addr;
411			struct in_addr haddr;
412
413			int sd;
414			size_t len;
415
416			len=strlen(data_stream);
417			if(len>UDP_MAX_PACKET_SIZE){
418	pajs	1.18	logmessage(LOG_ERR, "Too big to send to server. Please reconfigure client and server and recompile");
419	pajs	1.9	exit(1);
420			}
421	pajs	1.18	logmessage(LOG_DEBUG,"Resolving IP of server");
422	pajs	1.9	if (get_host_addr(ihost_state->server_fqdn, &haddr) != 0){
423	pajs	1.18	logmessage(LOG_ERR, "Failed to resolve address %s (%m)", ihost_state->server_fqdn);
424	pajs	1.9	return -1;
425			}
426	pajs	1.22	logmessage(LOG_DEBUG,"Creating UDP socket to %s on %d",ihost_state->server_fqdn, ihost_state->server_udp_port);
427	pajs	1.9	if((sd=socket(PF_INET, SOCK_DGRAM, IPPROTO_UDP)) < 0){
428	pajs	1.18	logmessage(LOG_ERR, "failed to create UDP socket (%m)");
429	pajs	1.9	return -1;
430			}
431
432			memset(&addr, 0, sizeof(addr));
433			addr.sin_family=AF_INET;
434			memcpy((char *)&addr.sin_addr, &haddr, sizeof haddr);
435			addr.sin_port = htons(ihost_state->server_udp_port);
436
437	pajs	1.18	logmessage(LOG_INFO,"Sending packet : %s", data_stream);
438	pajs	1.9	if((sendto(sd, data_stream, len, 0, (struct sockaddr *) &addr, sizeof(addr))) != len){
439	pajs	1.18	logmessage(LOG_ERR, "Send the wrong number of bytes (%m)");
440	pajs	1.9	return -1;
441			}
442
443	pajs	1.10	close(sd);
444
445	pajs	1.9	return 0;
446			}
447	pajs	1.1
448	pajs	1.17	void usage(char *progname){
449			fprintf(stderr, "Usage %s [options] server port\n", progname);
450			fprintf(stderr, "Options\n");
451			fprintf(stderr, " -v Verbose, the more v flags the more verbose, eg -vv\n");
452			fprintf(stderr, " -d Daemon mode, self backgrounding\n");
453			fprintf(stderr, " -s Send errors to syslog\n");
454			fprintf(stderr, " -V Print version number\n");
455			fprintf(stderr, " -h Prints this help page\n");
456			exit(1);
457			}
458
459	pajs	1.3	int main(int argc, char **argv){
460	pajs	1.2	ihost_state_t ihost_state;
461	pajs	1.6	int heartbeat_exit;
462			int counter=0;
463	pajs	1.10	long udp_time=0, tcp_time=0, stat_grab_time=0, cur_time=0;
464	pajs	1.9	int sleep_delay=0;
465			char *xml_stats;
466	pajs	1.18	pid_t pid;
467	pajs	1.17	int cmdopt;
468			extern int optind;
469	pajs	1.18	int verbose=0, daemon=0;
470			extern int syslog_logging;
471			extern int log_level;
472			extern int cur_level;
473	pajs	1.19	FILE *f;
474	pajs	1.18
475			log_level=1;
476			cur_level=1;
477			syslog_logging=0;
478
479			errf_set_ofunc(log_errors);
480	pajs	1.5	/* NULL'ify so i can tell if i need to free it or not */
481			ihost_state.fm_host=NULL;
482			ihost_state.my_fqdn=NULL;
483			ihost_state.server_fqdn=NULL;
484			ihost_state.last_modified=NULL;
485			ihost_state.files_list=NULL;
486			ihost_state.key=NULL;
487
488	pajs	1.3	errf_set_progname(argv[0]);
489	pajs	1.18
490	pajs	1.17
491			while((cmdopt=getopt(argc, argv, "vdshV")) != -1){
492			switch(cmdopt){
493			case 'v':
494			verbose++;
495			break;
496
497			case 'd':
498	pajs	1.18	/* Force syslog logging since stderr will be closed in this case */
499			syslog_logging=1;
500	pajs	1.17	daemon=1;
501			break;
502
503			case 's':
504	pajs	1.18	syslog_logging=1;
505	pajs	1.17	break;
506
507			case 'h':
508			usage(argv[0]);
509			break;
510	pajs	1.18
511	pajs	1.17	case 'V':
512	pajs	1.22	errf("%s version %s",argv[0], VERSION_NO);
513	pajs	1.17	break;
514	pajs	1.18
515	pajs	1.17	default:
516			usage(argv[0]);
517			exit(1);
518			}
519			}
520
521			if(argc!=optind+2){
522			usage(argv[0]);
523	pajs	1.3	exit(1);
524			}
525	pajs	1.17	ihost_state.fm_host=argv[optind];
526			ihost_state.fm_port=atoi(argv[optind+1]);
527			if(ihost_state.fm_port==0){
528			errf("Invalid port number");
529			usage(argv[0]);
530			}
531	pajs	1.18
532			if(daemon==1){
533			pid=fork();
534			if(pid==-1){
535			errf("Fork failed, can't background. Exiting");
536			exit(1);
537			}else if(pid!=0){
538			/* Parent process */
539			return 0;
540			}
541			/* We should now be in the background*/
542			if(setsid()==-1){
543			errf("setsid failed (%m)");
544			exit(1);
545			}
546			fclose(stdin);
547			fclose(stdout);
548			fclose(stderr);
549			}
550
551			if(syslog_logging==1){
552			openlog(errf_get_progname(),0,LOG_ERR);
553			setlogmask(LOG_UPTO(LOG_DEBUG));
554			}
555
556			switch(verbose){
557			case 0:
558			/* Critical errors + */
559			log_level=LOG_ERR;
560			break;
561			case 1:
562			/* Recoverable errors */
563			log_level=LOG_WARNING;
564			break;
565			case 2:
566			/* Print stuff like the XML packets */
567			log_level=LOG_INFO;
568			break;
569			default:
570			/* Must have lots of v's */
571			/* Print out everything its doing */
572			log_level=LOG_DEBUG;
573			break;
574	pajs	1.19	}
575
576			logmessage(LOG_DEBUG,"Writing PID FILE");
577			pid=getpid();
578			if((f=fopen(PID_FILE,"w")) == NULL){
579			logmessage(LOG_WARNING, "Failed to write PID file");
580			}else{
581	pajs	1.22	if((fprintf(f,"%d",(int)pid)) > 0 ){
582	pajs	1.19	logmessage(LOG_WARNING, "Failed to write PID file");
583			}
584			if((fclose(f))!=0){
585			logmessage(LOG_ERR, "failed to close PID file");
586			exit(1);
587			}
588	pajs	1.18	}
589	pajs	1.2
590			if(ihost_configure(&ihost_state)!=0){
591	pajs	1.18	logmessage(LOG_ERR,"configure failed");
592	pajs	1.6	/* Ok, ideally we prob should have 2 copies of the structure and carry on if this
593			happens.. But we dont :) (at the moment) */
594			exit(1);
595	pajs	1.2	}
596	pajs	1.5
597	pajs	1.9	for(;;){
598			cur_time=time(NULL);
599			if(cur_time>=tcp_time){
600	pajs	1.18	logmessage(LOG_DEBUG,"Sending heartbeat");
601	pajs	1.9	heartbeat_exit=heartbeat(&ihost_state);
602			if(heartbeat_exit==RECONFIGURE_RETURN_CODE){
603	pajs	1.18	logmessage(LOG_INFO,"heartbeat needs to be reconfigured");
604	pajs	1.9	ihost_configure(&ihost_state);
605			udp_time=0;
606			}
607			if(heartbeat_exit==-1){
608	pajs	1.18	logmessage(LOG_ERR,"Heartbeat failed");
609	pajs	1.9	exit(1);
610			}
611			tcp_time=time(NULL)+ihost_state.tcp_update_time;
612	pajs	1.18	logmessage(LOG_DEBUG,"next tcp time should be %d", tcp_time);
613	pajs	1.9	}
614	pajs	1.10
615	pajs	1.9	if(cur_time>=udp_time){
616	pajs	1.18	logmessage(LOG_DEBUG,"Sending udp data");
617	pajs	1.22	/* Work out how long it takes to get the stats for next time round
618			so the sleep time can be adjusted accordingly */
619	pajs	1.10	stat_grab_time=time(NULL);
620	pajs	1.13	if((xml_stats=stat_grab(&ihost_state, counter++)) == NULL){
621	pajs	1.18	logmessage(LOG_ERR,"Failed to get stats (%m)");
622	pajs	1.9	exit(1);
623			}
624	pajs	1.10	stat_grab_time=time(NULL)-stat_grab_time;
625			send_stats(&ihost_state, xml_stats);
626			free(xml_stats);
627			udp_time=time(NULL)+ihost_state.udp_update_time-stat_grab_time;
628	pajs	1.18	logmessage(LOG_DEBUG,"next udp time should be %d", udp_time);
629	pajs	1.9	}
630	pajs	1.10
631			if(tcp_time<udp_time){
632			sleep_delay=tcp_time-time(NULL);
633	pajs	1.9	}else{
634	pajs	1.10	sleep_delay=udp_time-time(NULL);
635	pajs	1.6	}
636	pajs	1.18	logmessage(LOG_DEBUG,"Sleeping for %d", sleep_delay);
637	pajs	1.10	if(sleep_delay>0) sleep(sleep_delay);
638	pajs	1.6	}
639	pajs	1.1	return 0;
640			}
641