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 <netinet/in.h>
#include <arpa/inet.h>
#include <syslog.h>

#define versionNo 0.8
#define RECONFIGURE_RETURN_CODE 2
#define UDP_MAX_PACKET_SIZE 8192

#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;
        fprintf(f_w, "%s\n", sendString);
        fflush(f_w);
        reply=fpgetline(f_r);
        /* 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=inet_ntoa(((struct sockaddr_in *)&ip)->sin_addr))==NULL){
                logmessage(LOG_ERR, "Failed to get IP (%m)");
                return -1;
        }       
        
        logmessage(LOG_DEBUG, "Sending STARTCONIG");
        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;
        }

        logmessage(LOG_DEBUG, "Sending LASTMODIFIED");
        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;
        }

        logmessage(LOG_DEBUG, "Sending FILELIST");
        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;
        }

        logmessage(LOG_DEBUG, "Sending FQDN");
        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;
        }

        logmessage(LOG_DEBUG, "Sending FQDN");
        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);
        }
        
        logmessage(LOG_DEBUG, "Sending TCPUpdateTime");
        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);
        }

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

        logmessage(LOG_DEBUG, "Sending FILTER");
        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;
        }

        logmessage(LOG_DEBUG, "Sending END");
        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;
        }

        logmessage(LOG_DEBUG, "Sending HEARTBEAT");
        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;
        }

        logmessage(LOG_DEBUG, "Sending CONFIG");
        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;
        }

        logmessage(LOG_DEBUG, "Sending %s", ihost_state->files_list);
        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;
        }

        logmessage(LOG_DEBUG, "Sending %s", ihost_state->last_modified);
        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;
        }

        logmessage(LOG_DEBUG,"Sending KEY");
        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;
        }

        logmessage(LOG_DEBUG,"Sending ENDHEARTBEAT");
        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 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<NUM_STATS;x++){
                if(stats[x]==NULL){
                        logmessage(LOG_ERR,"Function returned NULL");
                        return NULL;
                }
                if(xml_data==NULL){
                        if((xml_data=strf("%s", stats[x])) == NULL){
                                logmessage(LOG_ERR, "str failed (%m)");
                                return NULL;
                        }
                }else{
                        xml_data_p=xml_data;
                        if((xml_data=strf("%s%s", xml_data, stats[x])) == NULL){
                                logmessage(LOG_ERR, "str failed (%m)");
                                return NULL;
                        }
                        free(xml_data_p);
                }
                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 connection 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;

        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 %f",argv[0], versionNo);
                                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;
        }

        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");

                        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:	1.18
Committed:	Tue May 21 14:07:32 2002 UTC (22 years, 6 months ago) by pajs
Content type:	text/plain
Branch:	MAIN
Changes since 1.17:	+173 -67 lines
Log Message:	Command line arguments now do what they should. Message logging improved.
#	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 <netinet/in.h>
33			#include <arpa/inet.h>
34	pajs	1.18	#include <syslog.h>
35	pajs	1.1
36	pajs	1.17	#define versionNo 0.8
37	pajs	1.4	#define RECONFIGURE_RETURN_CODE 2
38	pajs	1.9	#define UDP_MAX_PACKET_SIZE 8192
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	1.7	fprintf(f_w, "%s\n", sendString);
76	pajs	1.2	fflush(f_w);
77			reply=fpgetline(f_r);
78	pajs	1.1	/* Returns pointer to static buffer */
79			return reply;
80			}
81
82			int ihost_configure(ihost_state_t *ihost_state){
83			struct sockaddr_in addr;
84			struct in_addr haddr;
85	pajs	1.16	struct sockaddr ip;
86			int ip_len;
87	pajs	1.1	int sd;
88	pajs	1.2	FILE fm_fd_r, fm_fd_w;
89	pajs	1.1	char *reply;
90	pajs	1.2	char *reply_ptr;
91	pajs	1.1
92	pajs	1.5	/* Check to see if anything needs to be free'd */
93			if (ihost_state->my_fqdn!=NULL) free(ihost_state->my_fqdn);
94			if (ihost_state->server_fqdn!=NULL) free(ihost_state->server_fqdn);
95			if (ihost_state->last_modified!=NULL) free(ihost_state->last_modified);
96			if (ihost_state->files_list!=NULL) free(ihost_state->files_list);
97
98	pajs	1.18	logmessage(LOG_DEBUG, "Setting up configure socket to %s on port %d", ihost_state->fm_host, ihost_state->fm_port);
99	pajs	1.1	if ((sd = socket(AF_INET, SOCK_STREAM, PF_UNSPEC)) < 0) {
100	pajs	1.18	logmessage(LOG_ERR, "Can't create AF_INET socket (%m)");
101	pajs	1.1	return -1;
102			}
103
104			if (get_host_addr(ihost_state->fm_host, &haddr) != 0){
105	pajs	1.18	logmessage(LOG_ERR, "Failed to resolve address %s (%m)", ihost_state->fm_host);
106	pajs	1.1	return -1;
107			}
108
109	pajs	1.9	memset(&addr, 0, sizeof addr);
110	pajs	1.1	addr.sin_family = AF_INET;
111	pajs	1.9	memcpy(&addr.sin_addr, &haddr, sizeof haddr);
112	pajs	1.1	addr.sin_port = htons(ihost_state->fm_port);
113
114			if (connect(sd, (struct sockaddr *)&addr, sizeof addr) != 0) {
115	pajs	1.18	logmessage(LOG_ERR, "Failed to connect to %s on port %d (%m)", ihost_state->fm_host, ihost_state->fm_port);
116	pajs	1.1	return -1;
117			}
118
119	pajs	1.2	/* Need to open 2 files, one for reading one for writing, as it gets confused if we only use 1 :) */
120			if ((fm_fd_r=fdopen(sd,"r")) == NULL){
121	pajs	1.18	logmessage(LOG_ERR, "Failed to open read stream (%m)");
122	pajs	1.2	return -1;
123			}
124
125			if ((fm_fd_w=fdopen(dup(sd),"w")) == NULL){
126	pajs	1.18	logmessage(LOG_ERR, "Failed to open write stream (%m)");
127	pajs	1.1	return -1;
128			}
129	pajs	1.16	ip_len=sizeof ip;
130			memset(&ip, 0, ip_len);
131			if((getsockname(sd, &ip, &ip_len)) != 0){
132	pajs	1.18	logmessage(LOG_ERR, "Failed to get IP address (%m)");
133	pajs	1.16	return -1;
134			}
135			if (ip.sa_family!=AF_INET){
136	pajs	1.18	logmessage(LOG_ERR, "sa family is wrong type");
137	pajs	1.16	return -1;
138			}
139
140			if((ihost_state->my_ip=inet_ntoa(((struct sockaddr_in *)&ip)->sin_addr))==NULL){
141	pajs	1.18	logmessage(LOG_ERR, "Failed to get IP (%m)");
142	pajs	1.16	return -1;
143			}
144	pajs	1.18
145			logmessage(LOG_DEBUG, "Sending STARTCONIG");
146	pajs	1.7	reply=sock_comm(fm_fd_r, fm_fd_w, "STARTCONFIG");
147	pajs	1.1	if ((reply==NULL) \|\| (strncasecmp(reply, "OK", 2) != 0) ) {
148	pajs	1.18	logmessage(LOG_ERR, "Server error on STARTCONFIG");
149	pajs	1.1	return -1;
150			}
151
152	pajs	1.18	logmessage(LOG_DEBUG, "Sending LASTMODIFIED");
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			logmessage(LOG_DEBUG, "Sending FILELIST");
164	pajs	1.7	reply=sock_comm(fm_fd_r, fm_fd_w, "FILELIST");
165	pajs	1.2	if((reply== NULL) \|\| (strncasecmp(reply, "ERROR", 5) ==0)){
166	pajs	1.18	logmessage(LOG_ERR, "Server error on FILELIST (%m)");
167	pajs	1.1	return -1;
168			}
169	pajs	1.7	if((ihost_state->files_list=strdup(reply)) == NULL){
170	pajs	1.18	logmessage(LOG_ERR, "strdup failed (%m)");
171	pajs	1.6	return -1;
172			}
173	pajs	1.1
174	pajs	1.18	logmessage(LOG_DEBUG, "Sending FQDN");
175	pajs	1.7	reply=sock_comm(fm_fd_r, fm_fd_w, "FQDN");
176	pajs	1.2	if((reply== NULL) \|\| (strncasecmp(reply, "ERROR", 5)==0)){
177	pajs	1.18	logmessage(LOG_ERR, "Server error on FQDN (%m)");
178	pajs	1.1	return -1;
179			}
180			if((ihost_state->my_fqdn=strdup(reply)) == NULL){
181	pajs	1.18	logmessage(LOG_ERR, "strdup failed (%m)");
182	pajs	1.1	return -1;
183			}
184
185	pajs	1.18	logmessage(LOG_DEBUG, "Sending FQDN");
186	pajs	1.7	reply=sock_comm(fm_fd_r, fm_fd_w, "UDPUpdateTime");
187	pajs	1.1	if(reply== NULL){
188	pajs	1.18	logmessage(LOG_ERR, "Server error (%m)");
189	pajs	1.1	return -1;
190			}
191			if (strncasecmp(reply, "ERROR", 5) != 0){
192			ihost_state->udp_update_time=atoi(reply);
193			}
194	pajs	1.18
195			logmessage(LOG_DEBUG, "Sending TCPUpdateTime");
196	pajs	1.7	reply=sock_comm(fm_fd_r, fm_fd_w, "TCPUpdateTime");
197	pajs	1.1	if(reply== NULL){
198	pajs	1.18	logmessage(LOG_ERR, "Server error on TCPUpdateTime (%m)");
199	pajs	1.1	return -1;
200			}
201			if (strncasecmp(reply, "ERROR", 5) != 0){
202			ihost_state->tcp_update_time=atoi(reply);
203			}
204
205	pajs	1.18	logmessage(LOG_DEBUG, "Sending ENDCONFIG");
206	pajs	1.7	reply=sock_comm(fm_fd_r, fm_fd_w, "ENDCONFIG");
207	pajs	1.1	if(reply== NULL){
208	pajs	1.18	logmessage(LOG_ERR, "Server error on ENDCONFIG (%m)");
209	pajs	1.1	return -1;
210			}
211
212	pajs	1.18	logmessage(LOG_DEBUG, "Sending FILTER");
213	pajs	1.7	reply=sock_comm(fm_fd_r, fm_fd_w, "FILTER");
214	pajs	1.2	if((reply== NULL) \|\| (strncasecmp(reply, "ERROR", 5)==0)){
215	pajs	1.18	logmessage(LOG_ERR, "Server error FILTER failed (%m)");
216	pajs	1.2	return -1;
217			}
218			reply_ptr=strchr(reply,';');
219			if (reply_ptr==NULL){
220	pajs	1.18	logmessage(LOG_ERR, "Incorrect data returned");
221	pajs	1.2	return -1;
222			}
223			*reply_ptr='\0';
224			if((ihost_state->server_fqdn=strdup(reply)) == NULL){
225	pajs	1.18	logmessage(LOG_ERR, "strdup failed (%m)");
226	pajs	1.2	return -1;
227			}
228	pajs	1.8	reply=reply_ptr + 1;
229	pajs	1.2	reply_ptr=strchr(reply,';');
230			if (reply_ptr==NULL){
231	pajs	1.18	logmessage(LOG_ERR, "Incorrect data returned 2");
232	pajs	1.2	return -1;
233			}
234			*reply_ptr='\0';
235			ihost_state->server_udp_port=atoi(reply);
236	pajs	1.8	reply=reply_ptr+1;
237	pajs	1.2	ihost_state->server_tcp_port=atoi(reply);
238			if ((ihost_state->server_tcp_port==0) \|\| (ihost_state->server_udp_port==0)){
239	pajs	1.18	logmessage(LOG_ERR, "Incorrect data returned 3 ");
240	pajs	1.2	return -1;
241			}
242
243	pajs	1.18	logmessage(LOG_DEBUG, "Sending END");
244	pajs	1.7	reply=sock_comm(fm_fd_r, fm_fd_w, "END");
245	pajs	1.2	if((reply== NULL) \|\| (strncasecmp(reply, "ERROR", 5) ==0 )){
246	pajs	1.18	logmessage(LOG_ERR, "Server error on END (%m)");
247	pajs	1.2	return -1;
248			}
249	pajs	1.1
250	pajs	1.2	if(fclose(fm_fd_r) !=0){
251	pajs	1.18	logmessage(LOG_ERR, "Failed to close read FD (%m)");
252	pajs	1.2	return -1;
253			}
254			if(fclose(fm_fd_w) !=0){
255	pajs	1.18	logmessage(LOG_ERR, "Failed to close write FD (%m)");
256	pajs	1.2	return -1;
257			}
258	pajs	1.1
259			return 0;
260			}
261	pajs	1.4
262			int heartbeat(ihost_state_t *ihost_state){
263			struct sockaddr_in addr;
264			struct in_addr haddr;
265			int sd;
266			FILE fm_fd_r, fm_fd_w;
267			char *reply;
268			int exitcode=0;
269
270	pajs	1.18	logmessage(LOG_DEBUG, "Setting up configure socket to %s on port %d", ihost_state->server_fqdn, ihost_state->server_tcp_port);
271	pajs	1.4	if ((sd = socket(AF_INET, SOCK_STREAM, PF_UNSPEC)) < 0) {
272	pajs	1.18	logmessage(LOG_ERR, "Can't create AF_INET socket (%m)");
273	pajs	1.4	return -1;
274			}
275
276			if (get_host_addr(ihost_state->server_fqdn, &haddr) != 0){
277	pajs	1.18	logmessage(LOG_ERR, "Failed to resolve address %s (%m)", ihost_state->server_fqdn);
278	pajs	1.4	return -1;
279			}
280
281	pajs	1.9	memset(&addr, 0, sizeof addr);
282	pajs	1.4	addr.sin_family = AF_INET;
283	pajs	1.9	memcpy(&addr.sin_addr, &haddr, sizeof haddr);
284	pajs	1.4	addr.sin_port = htons(ihost_state->server_tcp_port);
285
286			if (connect(sd, (struct sockaddr *)&addr, sizeof addr) != 0) {
287	pajs	1.18	logmessage(LOG_ERR, "Failed to connect to %s on port %d (%m)", ihost_state->server_fqdn, ihost_state->server_tcp_port);
288	pajs	1.4	return -1;
289			}
290
291			/* Need to open 2 files, one for reading one for writing, as it gets confused if we only use 1 :) */
292			if ((fm_fd_r=fdopen(sd,"r")) == NULL){
293	pajs	1.18	logmessage(LOG_ERR, "Failed to open stream (%m)");
294	pajs	1.4	return -1;
295			}
296
297			if ((fm_fd_w=fdopen(dup(sd),"w")) == NULL){
298	pajs	1.18	logmessage(LOG_ERR, "Failed to open stream (%m)");
299	pajs	1.4	return -1;
300			}
301
302	pajs	1.18	logmessage(LOG_DEBUG, "Sending HEARTBEAT");
303	pajs	1.7	reply=sock_comm(fm_fd_r, fm_fd_w, "HEARTBEAT");
304	pajs	1.6	if ((reply==NULL) \|\| (strncasecmp(reply, "ERROR", 5) == 0) ) {
305	pajs	1.18	logmessage(LOG_ERR, "Server error on HEARTBEAT");
306	pajs	1.4	return -1;
307			}
308	pajs	1.9
309	pajs	1.18	logmessage(LOG_DEBUG, "Sending CONFIG");
310	pajs	1.7	reply=sock_comm(fm_fd_r, fm_fd_w, "CONFIG");
311	pajs	1.6	if ((reply==NULL) \|\| (strncasecmp(reply, "ERROR", 5) == 0) ) {
312	pajs	1.18	logmessage(LOG_ERR, "Server error on CONFIG");
313	pajs	1.4	return -1;
314			}
315
316	pajs	1.18	logmessage(LOG_DEBUG, "Sending %s", ihost_state->files_list);
317	pajs	1.4	reply=sock_comm(fm_fd_r, fm_fd_w, ihost_state->files_list);
318			if ((reply==NULL) \|\| (strncasecmp(reply, "OK", 2) != 0) ) {
319	pajs	1.18	logmessage(LOG_ERR, "Server error on fileslist");
320	pajs	1.4	return -1;
321			}
322
323	pajs	1.18	logmessage(LOG_DEBUG, "Sending %s", ihost_state->last_modified);
324	pajs	1.4	reply=sock_comm(fm_fd_r, fm_fd_w, ihost_state->last_modified);
325			if (reply==NULL) {
326	pajs	1.18	logmessage(LOG_ERR, "Server error NULL recieved on lastmodified");
327	pajs	1.4	return -1;
328			}
329	pajs	1.6	if (strncasecmp(reply, "ERROR", 5) == 0){
330	pajs	1.4	/* Means the config has changed */
331	pajs	1.18	logmessage(LOG_INFO, "Recieved ERROR from server for a reconfigure required");
332	pajs	1.4	exitcode=RECONFIGURE_RETURN_CODE;
333			}
334	pajs	1.18
335			logmessage(LOG_DEBUG,"Sending KEY");
336	pajs	1.7	reply=sock_comm(fm_fd_r, fm_fd_w, "KEY");
337	pajs	1.6	if ((reply==NULL) \|\| (strncasecmp(reply, "ERROR", 5) == 0) ) {
338	pajs	1.18	logmessage(LOG_ERR, "Server error on KEY");
339	pajs	1.4	return -1;
340			}
341	pajs	1.5	if (ihost_state->key!=NULL) free(ihost_state->key);
342
343	pajs	1.7	if((ihost_state->key=strdup(reply)) == NULL){
344	pajs	1.18	logmessage(LOG_ERR, "strdup failed (%m)");
345	pajs	1.4	return -1;
346			}
347
348	pajs	1.18	logmessage(LOG_DEBUG,"Sending ENDHEARTBEAT");
349	pajs	1.7	reply=sock_comm(fm_fd_r, fm_fd_w, "ENDHEARTBEAT");
350	pajs	1.4	if((reply== NULL) \|\| (strncasecmp(reply, "ERROR", 5) ==0 )){
351	pajs	1.18	logmessage(LOG_ERR, "Server error on ENDHEARTBEAT (%m)");
352	pajs	1.4	return -1;
353			}
354
355	pajs	1.10	fflush(fm_fd_r);
356			fflush(fm_fd_w);
357
358	pajs	1.6	if(fclose(fm_fd_r) !=0){
359	pajs	1.18	logmessage(LOG_ERR, "Failed to close read FD (%m)");
360	pajs	1.6	return -1;
361			}
362			if(fclose(fm_fd_w) !=0){
363	pajs	1.18	logmessage(LOG_ERR, "Failed to close write FD (%m)");
364	pajs	1.6	return -1;
365			}
366
367	pajs	1.4	return exitcode;
368			}
369
370	pajs	1.9	char stat_grab(ihost_state_t ihost_state, int counter){
371			#define NUM_STATS 9
372			char *stats[NUM_STATS];
373			char *xml_data=NULL;
374			char *xml_data_p;
375			int x=0;
376	pajs	1.18
377			logmessage(LOG_DEBUG,"get_cpu_stats");
378	pajs	1.9	stats[0]=get_cpu_stats();
379	pajs	1.18	logmessage(LOG_DEBUG,"get_disk_stats");
380	pajs	1.9	stats[1]=get_disk_stats();
381	pajs	1.18	logmessage(LOG_DEBUG,"get_load_stats");
382	pajs	1.9	stats[2]=get_load_stats();
383	pajs	1.18	logmessage(LOG_DEBUG,"get_memory_stats");
384	pajs	1.9	stats[3]=get_memory_stats();
385	pajs	1.18	logmessage(LOG_DEBUG,"get_os_info");
386	pajs	1.9	stats[4]=get_os_info();
387	pajs	1.18	logmessage(LOG_DEBUG,"get_page_stats");
388	pajs	1.9	stats[5]=get_page_stats();
389	pajs	1.18	logmessage(LOG_DEBUG,"get_process_stats");
390	pajs	1.9	stats[6]=get_process_stats();
391	pajs	1.18	logmessage(LOG_DEBUG,"get_swap_stats");
392	pajs	1.9	stats[7]=get_swap_stats();
393	pajs	1.18	logmessage(LOG_DEBUG,"get_user_stats");
394	pajs	1.9	stats[8]=get_user_stats();
395
396			for(;x<NUM_STATS;x++){
397			if(stats[x]==NULL){
398	pajs	1.18	logmessage(LOG_ERR,"Function returned NULL");
399	pajs	1.9	return NULL;
400			}
401			if(xml_data==NULL){
402			if((xml_data=strf("%s", stats[x])) == NULL){
403	pajs	1.18	logmessage(LOG_ERR, "str failed (%m)");
404	pajs	1.9	return NULL;
405			}
406			}else{
407			xml_data_p=xml_data;
408			if((xml_data=strf("%s%s", xml_data, stats[x])) == NULL){
409	pajs	1.18	logmessage(LOG_ERR, "str failed (%m)");
410	pajs	1.9	return NULL;
411			}
412			free(xml_data_p);
413			}
414			free(stats[x]);
415			}
416			xml_data_p=xml_data;
417	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);
418	pajs	1.9	free(xml_data_p);
419	pajs	1.18
420			logmessage(LOG_DEBUG,"Generated XML Data of : %s", xml_data);
421	pajs	1.9	return xml_data;
422			}
423
424			int send_stats(ihost_state_t ihost_state, char data_stream){
425			struct sockaddr_in addr;
426			struct in_addr haddr;
427
428			int sd;
429			size_t len;
430
431			len=strlen(data_stream);
432			if(len>UDP_MAX_PACKET_SIZE){
433	pajs	1.18	logmessage(LOG_ERR, "Too big to send to server. Please reconfigure client and server and recompile");
434	pajs	1.9	exit(1);
435			}
436	pajs	1.18	logmessage(LOG_DEBUG,"Resolving IP of server");
437	pajs	1.9	if (get_host_addr(ihost_state->server_fqdn, &haddr) != 0){
438	pajs	1.18	logmessage(LOG_ERR, "Failed to resolve address %s (%m)", ihost_state->server_fqdn);
439	pajs	1.9	return -1;
440			}
441	pajs	1.18	logmessage(LOG_DEBUG,"Creating UDP connection to %s on %d",ihost_state->server_fqdn, ihost_state->server_udp_port);
442	pajs	1.9	if((sd=socket(PF_INET, SOCK_DGRAM, IPPROTO_UDP)) < 0){
443	pajs	1.18	logmessage(LOG_ERR, "failed to create UDP socket (%m)");
444	pajs	1.9	return -1;
445			}
446
447			memset(&addr, 0, sizeof(addr));
448			addr.sin_family=AF_INET;
449			memcpy((char *)&addr.sin_addr, &haddr, sizeof haddr);
450			addr.sin_port = htons(ihost_state->server_udp_port);
451
452	pajs	1.18	logmessage(LOG_INFO,"Sending packet : %s", data_stream);
453	pajs	1.9	if((sendto(sd, data_stream, len, 0, (struct sockaddr *) &addr, sizeof(addr))) != len){
454	pajs	1.18	logmessage(LOG_ERR, "Send the wrong number of bytes (%m)");
455	pajs	1.9	return -1;
456			}
457
458	pajs	1.10	close(sd);
459
460	pajs	1.9	return 0;
461			}
462	pajs	1.1
463	pajs	1.17	void usage(char *progname){
464			fprintf(stderr, "Usage %s [options] server port\n", progname);
465			fprintf(stderr, "Options\n");
466			fprintf(stderr, " -v Verbose, the more v flags the more verbose, eg -vv\n");
467			fprintf(stderr, " -d Daemon mode, self backgrounding\n");
468			fprintf(stderr, " -s Send errors to syslog\n");
469			fprintf(stderr, " -V Print version number\n");
470			fprintf(stderr, " -h Prints this help page\n");
471			exit(1);
472			}
473
474	pajs	1.3	int main(int argc, char **argv){
475	pajs	1.2	ihost_state_t ihost_state;
476	pajs	1.6	int heartbeat_exit;
477			int counter=0;
478	pajs	1.10	long udp_time=0, tcp_time=0, stat_grab_time=0, cur_time=0;
479	pajs	1.9	int sleep_delay=0;
480			char *xml_stats;
481	pajs	1.18	pid_t pid;
482	pajs	1.17	int cmdopt;
483			extern int optind;
484	pajs	1.18	int verbose=0, daemon=0;
485			extern int syslog_logging;
486			extern int log_level;
487			extern int cur_level;
488
489			log_level=1;
490			cur_level=1;
491			syslog_logging=0;
492
493			errf_set_ofunc(log_errors);
494	pajs	1.5	/* NULL'ify so i can tell if i need to free it or not */
495			ihost_state.fm_host=NULL;
496			ihost_state.my_fqdn=NULL;
497			ihost_state.server_fqdn=NULL;
498			ihost_state.last_modified=NULL;
499			ihost_state.files_list=NULL;
500			ihost_state.key=NULL;
501
502	pajs	1.3	errf_set_progname(argv[0]);
503	pajs	1.18
504	pajs	1.17
505			while((cmdopt=getopt(argc, argv, "vdshV")) != -1){
506			switch(cmdopt){
507			case 'v':
508			verbose++;
509			break;
510
511			case 'd':
512	pajs	1.18	/* Force syslog logging since stderr will be closed in this case */
513			syslog_logging=1;
514	pajs	1.17	daemon=1;
515			break;
516
517			case 's':
518	pajs	1.18	syslog_logging=1;
519	pajs	1.17	break;
520
521			case 'h':
522			usage(argv[0]);
523			break;
524	pajs	1.18
525	pajs	1.17	case 'V':
526			errf("%s version %f",argv[0], versionNo);
527			break;
528	pajs	1.18
529	pajs	1.17	default:
530			usage(argv[0]);
531			exit(1);
532			}
533			}
534
535			if(argc!=optind+2){
536			usage(argv[0]);
537	pajs	1.3	exit(1);
538			}
539	pajs	1.17	ihost_state.fm_host=argv[optind];
540			ihost_state.fm_port=atoi(argv[optind+1]);
541			if(ihost_state.fm_port==0){
542			errf("Invalid port number");
543			usage(argv[0]);
544			}
545	pajs	1.18
546			if(daemon==1){
547			pid=fork();
548			if(pid==-1){
549			errf("Fork failed, can't background. Exiting");
550			exit(1);
551			}else if(pid!=0){
552			/* Parent process */
553			return 0;
554			}
555			/* We should now be in the background*/
556			if(setsid()==-1){
557			errf("setsid failed (%m)");
558			exit(1);
559			}
560			fclose(stdin);
561			fclose(stdout);
562			fclose(stderr);
563			}
564
565			if(syslog_logging==1){
566			openlog(errf_get_progname(),0,LOG_ERR);
567			setlogmask(LOG_UPTO(LOG_DEBUG));
568			}
569
570			switch(verbose){
571			case 0:
572			/* Critical errors + */
573			log_level=LOG_ERR;
574			break;
575			case 1:
576			/* Recoverable errors */
577			log_level=LOG_WARNING;
578			break;
579			case 2:
580			/* Print stuff like the XML packets */
581			log_level=LOG_INFO;
582			break;
583			default:
584			/* Must have lots of v's */
585			/* Print out everything its doing */
586			log_level=LOG_DEBUG;
587			break;
588			}
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
618	pajs	1.10	stat_grab_time=time(NULL);
619	pajs	1.13	if((xml_stats=stat_grab(&ihost_state, counter++)) == NULL){
620	pajs	1.18	logmessage(LOG_ERR,"Failed to get stats (%m)");
621	pajs	1.9	exit(1);
622			}
623	pajs	1.10	stat_grab_time=time(NULL)-stat_grab_time;
624			send_stats(&ihost_state, xml_stats);
625			free(xml_stats);
626			udp_time=time(NULL)+ihost_state.udp_update_time-stat_grab_time;
627	pajs	1.18	logmessage(LOG_DEBUG,"next udp time should be %d", udp_time);
628	pajs	1.9	}
629	pajs	1.10
630			if(tcp_time<udp_time){
631			sleep_delay=tcp_time-time(NULL);
632	pajs	1.9	}else{
633	pajs	1.10	sleep_delay=udp_time-time(NULL);
634	pajs	1.6	}
635	pajs	1.18	logmessage(LOG_DEBUG,"Sleeping for %d", sleep_delay);
636	pajs	1.10	if(sleep_delay>0) sleep(sleep_delay);
637	pajs	1.6	}
638	pajs	1.1	return 0;
639			}
640