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 <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>

#define RECONFIGURE_RETURN_CODE 2
#define UDP_MAX_PACKET_SIZE 8192

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;

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);

        if ((sd = socket(AF_INET, SOCK_STREAM, PF_UNSPEC)) < 0) {
                errf("Can't create AF_INET socket (%m)");
                return -1;
        }

        if (get_host_addr(ihost_state->fm_host, &haddr) != 0){
                errf("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) {
                errf("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){
                errf("Failed to open read stream (%m)");
                return -1;
        }

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

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

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

        reply=sock_comm(fm_fd_r, fm_fd_w, "UDPUpdateTime");
        if(reply== NULL){
                errf("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){
                errf("Server error (%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){
                errf("Server error (%m)");
                return -1;
        }

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

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

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

        if ((sd = socket(AF_INET, SOCK_STREAM, PF_UNSPEC)) < 0) {
                errf("Can't create AF_INET socket (%m)");
                return -1;
        }

        if (get_host_addr(ihost_state->server_fqdn, &haddr) != 0){
                errf("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->server_tcp_port);

        if (connect(sd, (struct sockaddr *)&addr, sizeof addr) != 0) {
                errf("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){
                errf("Failed to open stream (%m)");
                return -1;
        }

        if ((fm_fd_w=fdopen(dup(sd),"w")) == NULL){
                errf("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) ) {
                errf("Server error");
                return -1;
        }

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

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

        reply=sock_comm(fm_fd_r, fm_fd_w, ihost_state->last_modified);
        if (reply==NULL) {
                errf("Server error");
                return -1;
        }
        if (strncasecmp(reply, "ERROR", 5) == 0){
        /* Means the config has changed */
                exitcode=RECONFIGURE_RETURN_CODE;
        }
        reply=sock_comm(fm_fd_r, fm_fd_w, "KEY");
        if ((reply==NULL) || (strncasecmp(reply, "ERROR", 5) == 0) ) {
                errf("Server error");
                return -1;
        }
        if (ihost_state->key!=NULL) free(ihost_state->key);
 
        if((ihost_state->key=strdup(reply)) == NULL){
                errf("strdup failed (%m)");
                return -1;
        }

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

        fflush(fm_fd_r);
        fflush(fm_fd_w);

        if(fclose(fm_fd_r) !=0){
                errf("Failed to close read FD (%m)");
                return -1;
        }
        if(fclose(fm_fd_w) !=0){
                errf("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;
        
        stats[0]=get_cpu_stats();
        stats[1]=get_disk_stats();
        stats[2]=get_load_stats();      
        stats[3]=get_memory_stats();
        stats[4]=get_os_info();
        stats[5]=get_page_stats();
        stats[6]=get_process_stats();
        stats[7]=get_swap_stats();
        stats[8]=get_user_stats();

        for(;x<NUM_STATS;x++){
                if(stats[x]==NULL){
                        return NULL;
                }
                if(xml_data==NULL){
                        if((xml_data=strf("%s", stats[x])) == NULL){
                                errf("str failed (%m)");
                                return NULL;
                        }
                }else{
                        xml_data_p=xml_data;
                        if((xml_data=strf("%s%s", xml_data, stats[x])) == NULL){
                                errf("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); 
        
        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){
                errf("Too big to send to server. Please reconfigure client and server and recompile");
                exit(1);
        }
        
        if (get_host_addr(ihost_state->server_fqdn, &haddr) != 0){
                errf("Failed to resolve address %s (%m)", ihost_state->fm_host);
                return -1;
        }

        if((sd=socket(PF_INET, SOCK_DGRAM, IPPROTO_UDP)) < 0){
                errf("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);

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

        close(sd);

        return 0;       
}

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;

        /* 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]);
        if(argc!=3){
                errf_usage("<host> <port>");    
                exit(1);
        }

        ihost_state.fm_host=argv[1];
        ihost_state.fm_port=atoi(argv[2]);

        if(ihost_configure(&ihost_state)!=0){
                errf("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){
                        /*printf("sending TCP\n");*/
                        heartbeat_exit=heartbeat(&ihost_state);
                        if(heartbeat_exit==RECONFIGURE_RETURN_CODE){
                                /*errf("heartbeat needs to be reconfigured");*/
                                ihost_configure(&ihost_state);
                                /* So udp doesn't wait til next sending before updating */
                                udp_time=0;
                        }
                        if(heartbeat_exit==-1){
                                errf("ah crap");
                                exit(1);
                        }
                        tcp_time=time(NULL)+ihost_state.tcp_update_time;
                }

                if(cur_time>=udp_time){
                        /*printf("sending UDP\n");*/
                        stat_grab_time=time(NULL);
                        if((xml_stats=stat_grab(&ihost_state, counter++)) == NULL){
                                errf("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;
                }

                if(tcp_time<udp_time){
                        sleep_delay=tcp_time-time(NULL);
                }else{
                        sleep_delay=udp_time-time(NULL);
                }

                /*printf("tcp epoc: %ld \t udp epoc: %ld\ntime:%ld \tsleeping: %d\n", tcp_time, udp_time, time(NULL), sleep_delay);*/
                if(sleep_delay>0) sleep(sleep_delay);
        }
        return 0;
}

Revision:	1.16
Committed:	Sun May 19 19:42:41 2002 UTC (22 years ago) by pajs
Content type:	text/plain
Branch:	MAIN
Changes since 1.15:	+22 -2 lines
Log Message:	Now sends ip address of host. Doesn't cope with ip changing without at least a reconfigure signal from the server. Only tested on solaris.
#	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			#include <unistd.h>
23			#include <syslog.h>
24			#include <netinet/in.h>
25	pajs	1.9	#include "ukcprog.h"
26	pajs	1.1	#include <netdb.h>
27	pajs	1.12	#include <string.h>
28	pajs	1.9	#include "statgrab.h"
29	pajs	1.12	#include <time.h>
30	pajs	1.14	#include <sys/socket.h>
31	pajs	1.16	#include <netinet/in.h>
32			#include <arpa/inet.h>
33	pajs	1.1
34	pajs	1.4	#define RECONFIGURE_RETURN_CODE 2
35	pajs	1.9	#define UDP_MAX_PACKET_SIZE 8192
36	pajs	1.4
37	pajs	1.1	typedef struct{
38			int fm_port;
39			char *fm_host;
40	pajs	1.16
41			char *my_ip;
42	pajs	1.1	char *my_fqdn;
43			char *server_fqdn;
44			int server_udp_port;
45			int server_tcp_port;
46	pajs	1.4	char *last_modified;
47	pajs	1.1	char *files_list;
48			char *key;
49			int udp_update_time;
50			int tcp_update_time;
51
52			}ihost_state_t;
53
54	pajs	1.7	char* sock_comm(FILE f_r, FILE f_w, char *sendString){
55	pajs	1.1	char *reply;
56	pajs	1.7	fprintf(f_w, "%s\n", sendString);
57	pajs	1.2	fflush(f_w);
58			reply=fpgetline(f_r);
59	pajs	1.1	/* Returns pointer to static buffer */
60			return reply;
61			}
62
63			int ihost_configure(ihost_state_t *ihost_state){
64			struct sockaddr_in addr;
65			struct in_addr haddr;
66	pajs	1.16	struct sockaddr ip;
67			int ip_len;
68	pajs	1.1	int sd;
69	pajs	1.2	FILE fm_fd_r, fm_fd_w;
70	pajs	1.1	char *reply;
71	pajs	1.2	char *reply_ptr;
72	pajs	1.1
73	pajs	1.5	/* Check to see if anything needs to be free'd */
74			if (ihost_state->my_fqdn!=NULL) free(ihost_state->my_fqdn);
75			if (ihost_state->server_fqdn!=NULL) free(ihost_state->server_fqdn);
76			if (ihost_state->last_modified!=NULL) free(ihost_state->last_modified);
77			if (ihost_state->files_list!=NULL) free(ihost_state->files_list);
78
79	pajs	1.1	if ((sd = socket(AF_INET, SOCK_STREAM, PF_UNSPEC)) < 0) {
80			errf("Can't create AF_INET socket (%m)");
81			return -1;
82			}
83
84			if (get_host_addr(ihost_state->fm_host, &haddr) != 0){
85			errf("Failed to resolve address %s (%m)", ihost_state->fm_host);
86			return -1;
87			}
88
89	pajs	1.9	memset(&addr, 0, sizeof addr);
90	pajs	1.1	addr.sin_family = AF_INET;
91	pajs	1.9	memcpy(&addr.sin_addr, &haddr, sizeof haddr);
92	pajs	1.1	addr.sin_port = htons(ihost_state->fm_port);
93
94			if (connect(sd, (struct sockaddr *)&addr, sizeof addr) != 0) {
95			errf("Failed to connect to %s on port %d (%m)", ihost_state->fm_host, ihost_state->fm_port);
96			return -1;
97			}
98
99	pajs	1.2	/* Need to open 2 files, one for reading one for writing, as it gets confused if we only use 1 :) */
100			if ((fm_fd_r=fdopen(sd,"r")) == NULL){
101	pajs	1.8	errf("Failed to open read stream (%m)");
102	pajs	1.2	return -1;
103			}
104
105			if ((fm_fd_w=fdopen(dup(sd),"w")) == NULL){
106	pajs	1.8	errf("Failed to open write stream (%m)");
107	pajs	1.1	return -1;
108			}
109	pajs	1.16	ip_len=sizeof ip;
110			memset(&ip, 0, ip_len);
111			if((getsockname(sd, &ip, &ip_len)) != 0){
112			errf("Failed to get IP address (%m)");
113			return -1;
114			}
115			if (ip.sa_family!=AF_INET){
116			errf("sa family is wrong type");
117			return -1;
118			}
119
120			if((ihost_state->my_ip=inet_ntoa(((struct sockaddr_in *)&ip)->sin_addr))==NULL){
121			errf("Failed to get IP (%m)");
122			return -1;
123			}
124	pajs	1.2
125	pajs	1.7	reply=sock_comm(fm_fd_r, fm_fd_w, "STARTCONFIG");
126	pajs	1.1	if ((reply==NULL) \|\| (strncasecmp(reply, "OK", 2) != 0) ) {
127			errf("Server error");
128			return -1;
129			}
130
131	pajs	1.7	reply=sock_comm(fm_fd_r, fm_fd_w, "LASTMODIFIED");
132	pajs	1.2	if((reply== NULL) \|\| (strncasecmp(reply, "ERROR", 5) ==0)){
133	pajs	1.1	errf("Server error (%m)");
134			return -1;
135			}
136	pajs	1.7	if((ihost_state->last_modified=strdup(reply)) == NULL){
137			errf("strdup failed (%m)");
138	pajs	1.4	return -1;
139			}
140	pajs	1.1
141	pajs	1.7	reply=sock_comm(fm_fd_r, fm_fd_w, "FILELIST");
142	pajs	1.2	if((reply== NULL) \|\| (strncasecmp(reply, "ERROR", 5) ==0)){
143	pajs	1.1	errf("Server error (%m)");
144			return -1;
145			}
146	pajs	1.7	if((ihost_state->files_list=strdup(reply)) == NULL){
147			errf("strdup failed (%m)");
148	pajs	1.6	return -1;
149			}
150	pajs	1.1
151	pajs	1.7	reply=sock_comm(fm_fd_r, fm_fd_w, "FQDN");
152	pajs	1.2	if((reply== NULL) \|\| (strncasecmp(reply, "ERROR", 5)==0)){
153	pajs	1.1	errf("Server error (%m)");
154			return -1;
155			}
156			if((ihost_state->my_fqdn=strdup(reply)) == NULL){
157			errf("strdup failed (%m)");
158			return -1;
159			}
160
161	pajs	1.7	reply=sock_comm(fm_fd_r, fm_fd_w, "UDPUpdateTime");
162	pajs	1.1	if(reply== NULL){
163			errf("Server error (%m)");
164			return -1;
165			}
166			if (strncasecmp(reply, "ERROR", 5) != 0){
167			ihost_state->udp_update_time=atoi(reply);
168			}
169
170	pajs	1.7	reply=sock_comm(fm_fd_r, fm_fd_w, "TCPUpdateTime");
171	pajs	1.1	if(reply== NULL){
172			errf("Server error (%m)");
173			return -1;
174			}
175			if (strncasecmp(reply, "ERROR", 5) != 0){
176			ihost_state->tcp_update_time=atoi(reply);
177			}
178
179	pajs	1.7	reply=sock_comm(fm_fd_r, fm_fd_w, "ENDCONFIG");
180	pajs	1.1	if(reply== NULL){
181			errf("Server error (%m)");
182			return -1;
183			}
184
185	pajs	1.7	reply=sock_comm(fm_fd_r, fm_fd_w, "FILTER");
186	pajs	1.2	if((reply== NULL) \|\| (strncasecmp(reply, "ERROR", 5)==0)){
187	pajs	1.9	errf("Server error FILTER failed (%m)");
188	pajs	1.2	return -1;
189			}
190			reply_ptr=strchr(reply,';');
191			if (reply_ptr==NULL){
192			errf("Incorrect data returned");
193			return -1;
194			}
195			*reply_ptr='\0';
196			if((ihost_state->server_fqdn=strdup(reply)) == NULL){
197			errf("strdup failed (%m)");
198			return -1;
199			}
200	pajs	1.8	reply=reply_ptr + 1;
201	pajs	1.2	reply_ptr=strchr(reply,';');
202			if (reply_ptr==NULL){
203			errf("Incorrect data returned 2");
204			return -1;
205			}
206			*reply_ptr='\0';
207			ihost_state->server_udp_port=atoi(reply);
208	pajs	1.8	reply=reply_ptr+1;
209	pajs	1.2	ihost_state->server_tcp_port=atoi(reply);
210			if ((ihost_state->server_tcp_port==0) \|\| (ihost_state->server_udp_port==0)){
211			errf("Incorrect data returned 3 ");
212			return -1;
213			}
214
215	pajs	1.7	reply=sock_comm(fm_fd_r, fm_fd_w, "END");
216	pajs	1.2	if((reply== NULL) \|\| (strncasecmp(reply, "ERROR", 5) ==0 )){
217			errf("Server error (%m)");
218			return -1;
219			}
220	pajs	1.1
221	pajs	1.2	if(fclose(fm_fd_r) !=0){
222	pajs	1.8	errf("Failed to close read FD (%m)");
223	pajs	1.2	return -1;
224			}
225			if(fclose(fm_fd_w) !=0){
226	pajs	1.8	errf("Failed to close write FD (%m)");
227	pajs	1.2	return -1;
228			}
229	pajs	1.1
230			return 0;
231			}
232	pajs	1.4
233			int heartbeat(ihost_state_t *ihost_state){
234			struct sockaddr_in addr;
235			struct in_addr haddr;
236			int sd;
237			FILE fm_fd_r, fm_fd_w;
238			char *reply;
239			int exitcode=0;
240
241			if ((sd = socket(AF_INET, SOCK_STREAM, PF_UNSPEC)) < 0) {
242			errf("Can't create AF_INET socket (%m)");
243			return -1;
244			}
245
246			if (get_host_addr(ihost_state->server_fqdn, &haddr) != 0){
247			errf("Failed to resolve address %s (%m)", ihost_state->fm_host);
248			return -1;
249			}
250
251	pajs	1.9	memset(&addr, 0, sizeof addr);
252	pajs	1.4	addr.sin_family = AF_INET;
253	pajs	1.9	memcpy(&addr.sin_addr, &haddr, sizeof haddr);
254	pajs	1.4	addr.sin_port = htons(ihost_state->server_tcp_port);
255
256			if (connect(sd, (struct sockaddr *)&addr, sizeof addr) != 0) {
257			errf("Failed to connect to %s on port %d (%m)", ihost_state->fm_host, ihost_state->fm_port);
258			return -1;
259			}
260
261			/* Need to open 2 files, one for reading one for writing, as it gets confused if we only use 1 :) */
262			if ((fm_fd_r=fdopen(sd,"r")) == NULL){
263			errf("Failed to open stream (%m)");
264			return -1;
265			}
266
267			if ((fm_fd_w=fdopen(dup(sd),"w")) == NULL){
268			errf("Failed to open stream (%m)");
269			return -1;
270			}
271
272	pajs	1.7	reply=sock_comm(fm_fd_r, fm_fd_w, "HEARTBEAT");
273	pajs	1.6	if ((reply==NULL) \|\| (strncasecmp(reply, "ERROR", 5) == 0) ) {
274	pajs	1.4	errf("Server error");
275			return -1;
276			}
277	pajs	1.9
278	pajs	1.7	reply=sock_comm(fm_fd_r, fm_fd_w, "CONFIG");
279	pajs	1.6	if ((reply==NULL) \|\| (strncasecmp(reply, "ERROR", 5) == 0) ) {
280	pajs	1.4	errf("Server error");
281			return -1;
282			}
283
284			reply=sock_comm(fm_fd_r, fm_fd_w, ihost_state->files_list);
285			if ((reply==NULL) \|\| (strncasecmp(reply, "OK", 2) != 0) ) {
286			errf("Server error");
287			return -1;
288			}
289
290			reply=sock_comm(fm_fd_r, fm_fd_w, ihost_state->last_modified);
291			if (reply==NULL) {
292			errf("Server error");
293			return -1;
294			}
295	pajs	1.6	if (strncasecmp(reply, "ERROR", 5) == 0){
296	pajs	1.4	/* Means the config has changed */
297			exitcode=RECONFIGURE_RETURN_CODE;
298			}
299	pajs	1.7	reply=sock_comm(fm_fd_r, fm_fd_w, "KEY");
300	pajs	1.6	if ((reply==NULL) \|\| (strncasecmp(reply, "ERROR", 5) == 0) ) {
301	pajs	1.4	errf("Server error");
302			return -1;
303			}
304	pajs	1.5	if (ihost_state->key!=NULL) free(ihost_state->key);
305
306	pajs	1.7	if((ihost_state->key=strdup(reply)) == NULL){
307			errf("strdup failed (%m)");
308	pajs	1.4	return -1;
309			}
310
311	pajs	1.7	reply=sock_comm(fm_fd_r, fm_fd_w, "ENDHEARTBEAT");
312	pajs	1.4	if((reply== NULL) \|\| (strncasecmp(reply, "ERROR", 5) ==0 )){
313			errf("Server error (%m)");
314			return -1;
315			}
316
317	pajs	1.10	fflush(fm_fd_r);
318			fflush(fm_fd_w);
319
320	pajs	1.6	if(fclose(fm_fd_r) !=0){
321	pajs	1.8	errf("Failed to close read FD (%m)");
322	pajs	1.6	return -1;
323			}
324			if(fclose(fm_fd_w) !=0){
325	pajs	1.8	errf("Failed to close write FD (%m)");
326	pajs	1.6	return -1;
327			}
328
329	pajs	1.4	return exitcode;
330			}
331
332	pajs	1.9	char stat_grab(ihost_state_t ihost_state, int counter){
333			#define NUM_STATS 9
334			char *stats[NUM_STATS];
335			char *xml_data=NULL;
336			char *xml_data_p;
337			int x=0;
338
339			stats[0]=get_cpu_stats();
340			stats[1]=get_disk_stats();
341			stats[2]=get_load_stats();
342			stats[3]=get_memory_stats();
343			stats[4]=get_os_info();
344			stats[5]=get_page_stats();
345			stats[6]=get_process_stats();
346			stats[7]=get_swap_stats();
347			stats[8]=get_user_stats();
348
349			for(;x<NUM_STATS;x++){
350			if(stats[x]==NULL){
351			return NULL;
352			}
353			if(xml_data==NULL){
354			if((xml_data=strf("%s", stats[x])) == NULL){
355			errf("str failed (%m)");
356			return NULL;
357			}
358			}else{
359			xml_data_p=xml_data;
360			if((xml_data=strf("%s%s", xml_data, stats[x])) == NULL){
361			errf("str failed (%m)");
362			return NULL;
363			}
364			free(xml_data_p);
365			}
366			free(stats[x]);
367			}
368			xml_data_p=xml_data;
369	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);
370	pajs	1.9	free(xml_data_p);
371
372			return xml_data;
373			}
374
375			int send_stats(ihost_state_t ihost_state, char data_stream){
376			struct sockaddr_in addr;
377			struct in_addr haddr;
378
379			int sd;
380			size_t len;
381
382			len=strlen(data_stream);
383			if(len>UDP_MAX_PACKET_SIZE){
384			errf("Too big to send to server. Please reconfigure client and server and recompile");
385			exit(1);
386			}
387
388			if (get_host_addr(ihost_state->server_fqdn, &haddr) != 0){
389			errf("Failed to resolve address %s (%m)", ihost_state->fm_host);
390			return -1;
391			}
392
393			if((sd=socket(PF_INET, SOCK_DGRAM, IPPROTO_UDP)) < 0){
394			errf("failed to create UDP socket (%m)");
395			return -1;
396			}
397
398			memset(&addr, 0, sizeof(addr));
399			addr.sin_family=AF_INET;
400			memcpy((char *)&addr.sin_addr, &haddr, sizeof haddr);
401			addr.sin_port = htons(ihost_state->server_udp_port);
402
403			if((sendto(sd, data_stream, len, 0, (struct sockaddr *) &addr, sizeof(addr))) != len){
404			errf("Send the wrong number of bytes (%m)");
405			return -1;
406			}
407
408	pajs	1.10	close(sd);
409
410	pajs	1.9	return 0;
411			}
412	pajs	1.1
413	pajs	1.3	int main(int argc, char **argv){
414	pajs	1.2	ihost_state_t ihost_state;
415	pajs	1.6	int heartbeat_exit;
416			int counter=0;
417	pajs	1.10	long udp_time=0, tcp_time=0, stat_grab_time=0, cur_time=0;
418	pajs	1.9	int sleep_delay=0;
419			char *xml_stats;
420	pajs	1.5
421			/* NULL'ify so i can tell if i need to free it or not */
422			ihost_state.fm_host=NULL;
423			ihost_state.my_fqdn=NULL;
424			ihost_state.server_fqdn=NULL;
425			ihost_state.last_modified=NULL;
426			ihost_state.files_list=NULL;
427			ihost_state.key=NULL;
428
429	pajs	1.3	errf_set_progname(argv[0]);
430			if(argc!=3){
431			errf_usage("<host> <port>");
432			exit(1);
433			}
434	pajs	1.2
435	pajs	1.3	ihost_state.fm_host=argv[1];
436			ihost_state.fm_port=atoi(argv[2]);
437	pajs	1.2
438			if(ihost_configure(&ihost_state)!=0){
439			errf("configure failed");
440	pajs	1.6	/* Ok, ideally we prob should have 2 copies of the structure and carry on if this
441			happens.. But we dont :) (at the moment) */
442			exit(1);
443	pajs	1.2	}
444	pajs	1.5
445	pajs	1.9	for(;;){
446			cur_time=time(NULL);
447			if(cur_time>=tcp_time){
448	pajs	1.10	/printf("sending TCP\n");/
449	pajs	1.9	heartbeat_exit=heartbeat(&ihost_state);
450			if(heartbeat_exit==RECONFIGURE_RETURN_CODE){
451	pajs	1.10	/errf("heartbeat needs to be reconfigured");/
452	pajs	1.9	ihost_configure(&ihost_state);
453			/* So udp doesn't wait til next sending before updating */
454			udp_time=0;
455			}
456			if(heartbeat_exit==-1){
457			errf("ah crap");
458			exit(1);
459			}
460			tcp_time=time(NULL)+ihost_state.tcp_update_time;
461			}
462	pajs	1.10
463	pajs	1.9	if(cur_time>=udp_time){
464	pajs	1.10	/printf("sending UDP\n");/
465			stat_grab_time=time(NULL);
466	pajs	1.13	if((xml_stats=stat_grab(&ihost_state, counter++)) == NULL){
467	pajs	1.9	errf("Failed to get stats (%m)");
468			exit(1);
469			}
470	pajs	1.10	stat_grab_time=time(NULL)-stat_grab_time;
471			send_stats(&ihost_state, xml_stats);
472			free(xml_stats);
473			udp_time=time(NULL)+ihost_state.udp_update_time-stat_grab_time;
474	pajs	1.9	}
475	pajs	1.10
476			if(tcp_time<udp_time){
477			sleep_delay=tcp_time-time(NULL);
478	pajs	1.9	}else{
479	pajs	1.10	sleep_delay=udp_time-time(NULL);
480	pajs	1.6	}
481	pajs	1.10
482			/printf("tcp epoc: %ld \t udp epoc: %ld\ntime:%ld \tsleeping: %d\n", tcp_time, udp_time, time(NULL), sleep_delay);/
483			if(sleep_delay>0) sleep(sleep_delay);
484	pajs	1.6	}
485	pajs	1.1	return 0;
486			}
487