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root/i-scream/projects/cms/source/ihost/ihost.c

Comparing projects/cms/source/ihost/ihost.c (file contents):
Revision 1.5 by pajs, Sun May 12 14:10:45 2002 UTC vs.
Revision 1.16 by pajs, Sun May 19 19:42:41 2002 UTC

#	Line 1 | Line 1
1	+	/*
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		#include <stdio.h>
2	–	#include <sys/socket.h>
21		#include <stdlib.h>
22		#include <unistd.h>
23		#include <syslog.h>
24		#include <netinet/in.h>
25	<	#include <ukcprog.h>
25	>	#include "ukcprog.h"
26		#include <netdb.h>
27	<	#include <strings.h>
27	>	#include <string.h>
28	>	#include "statgrab.h"
29	>	#include <time.h>
30	>	#include <sys/socket.h>
31	>	#include <netinet/in.h>
32	>	#include <arpa/inet.h>
33
34		#define RECONFIGURE_RETURN_CODE 2
35	+	#define UDP_MAX_PACKET_SIZE 8192
36
37		typedef struct{
38		int fm_port;
39		char *fm_host;
40	<
40	>
41	>	char *my_ip;
42		char *my_fqdn;
43		char *server_fqdn;
44		int server_udp_port;
#	Line 26 | Line 51 | typedef struct{
51
52		}ihost_state_t;
53
54	<	char* sock_comm(FILE *f_r, FILE *f_w, char* sendString){
54	>	char* sock_comm(FILE *f_r, FILE *f_w, char *sendString){
55		char *reply;
56	<	fprintf(f_w, "%s", sendString);
56	>	fprintf(f_w, "%s\n", sendString);
57		fflush(f_w);
58		reply=fpgetline(f_r);
59		/* Returns pointer to static buffer */
#	Line 38 | Line 63 | char* sock_comm(FILE *f_r, FILE *f_w, char* sendString
63		int ihost_configure(ihost_state_t *ihost_state){
64		struct sockaddr_in addr;
65		struct in_addr haddr;
66	+	struct sockaddr ip;
67	+	int ip_len;
68		int sd;
69		FILE *fm_fd_r, *fm_fd_w;
70		char *reply;
71		char *reply_ptr;
72
73		/* Check to see if anything needs to be free'd */
47	–	if (ihost_state->fm_host!=NULL) free(ihost_state->fm_host);
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);
#	Line 60 | Line 86 | int ihost_configure(ihost_state_t *ihost_state){
86		return -1;
87		}
88
89	<	memset((char *)&addr, 0, sizeof addr);
89	>	memset(&addr, 0, sizeof addr);
90		addr.sin_family = AF_INET;
91	<	memcpy((char *)&addr.sin_addr, &haddr, sizeof haddr);
91	>	memcpy(&addr.sin_addr, &haddr, sizeof haddr);
92		addr.sin_port =  htons(ihost_state->fm_port);
93
94		if (connect(sd, (struct sockaddr *)&addr, sizeof addr) != 0) {
#	Line 72 | Line 98 | int ihost_configure(ihost_state_t *ihost_state){
98
99		/* 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	<	errf("Failed to open stream (%m)");
101	>	errf("Failed to open read stream (%m)");
102		return -1;
103		}
104
105		if ((fm_fd_w=fdopen(dup(sd),"w")) == NULL){
106	<	errf("Failed to open stream (%m)");
106	>	errf("Failed to open write stream (%m)");
107		return -1;
108		}
109	+	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
125	<	reply=sock_comm(fm_fd_r, fm_fd_w, "STARTCONFIG\n");
125	>	reply=sock_comm(fm_fd_r, fm_fd_w, "STARTCONFIG");
126		if ((reply==NULL) || (strncasecmp(reply, "OK", 2) != 0) ) {
127		errf("Server error");
128		return -1;
129		}
130
131	<	reply=sock_comm(fm_fd_r, fm_fd_w, "LASTMODIFIED\n");
131	>	reply=sock_comm(fm_fd_r, fm_fd_w, "LASTMODIFIED");
132		if((reply== NULL) || (strncasecmp(reply, "ERROR", 5) ==0)){
133		errf("Server error (%m)");
134		return -1;
#	Line 97 | Line 138 | int ihost_configure(ihost_state_t *ihost_state){
138		return -1;
139		}
140
141	<	reply=sock_comm(fm_fd_r, fm_fd_w, "FILELIST\n");
141	>	reply=sock_comm(fm_fd_r, fm_fd_w, "FILELIST");
142		if((reply== NULL) || (strncasecmp(reply, "ERROR", 5) ==0)){
143		errf("Server error (%m)");
144		return -1;
145		}
146	<	if((ihost_state->files_list=strdup(reply)) == NULL){
147	<	errf("strdup failed (%m)");
148	<	return -1;
149	<	}
146	>	if((ihost_state->files_list=strdup(reply)) == NULL){
147	>	errf("strdup failed (%m)");
148	>	return -1;
149	>	}
150
151	<	reply=sock_comm(fm_fd_r, fm_fd_w, "FQDN\n");
151	>	reply=sock_comm(fm_fd_r, fm_fd_w, "FQDN");
152		if((reply== NULL) || (strncasecmp(reply, "ERROR", 5)==0)){
153		errf("Server error (%m)");
154		return -1;
#	Line 117 | Line 158 | int ihost_configure(ihost_state_t *ihost_state){
158		return -1;
159		}
160
161	<	reply=sock_comm(fm_fd_r, fm_fd_w, "UDPUpdateTime\n");
161	>	reply=sock_comm(fm_fd_r, fm_fd_w, "UDPUpdateTime");
162		if(reply== NULL){
163		errf("Server error (%m)");
164		return -1;
#	Line 126 | Line 167 | int ihost_configure(ihost_state_t *ihost_state){
167		ihost_state->udp_update_time=atoi(reply);
168		}
169
170	<	reply=sock_comm(fm_fd_r, fm_fd_w, "TCPUpdateTime\n");
170	>	reply=sock_comm(fm_fd_r, fm_fd_w, "TCPUpdateTime");
171		if(reply== NULL){
172		errf("Server error (%m)");
173		return -1;
#	Line 135 | Line 176 | int ihost_configure(ihost_state_t *ihost_state){
176		ihost_state->tcp_update_time=atoi(reply);
177		}
178
179	<	reply=sock_comm(fm_fd_r, fm_fd_w, "ENDCONFIG\n");
179	>	reply=sock_comm(fm_fd_r, fm_fd_w, "ENDCONFIG");
180		if(reply== NULL){
181		errf("Server error (%m)");
182		return -1;
183		}
184
185	<	reply=sock_comm(fm_fd_r, fm_fd_w, "FILTER\n");
185	>	reply=sock_comm(fm_fd_r, fm_fd_w, "FILTER");
186		if((reply== NULL) || (strncasecmp(reply, "ERROR", 5)==0)){
187	<	errf("Server error (%m)");
187	>	errf("Server error FILTER failed (%m)");
188		return -1;
189		}
190		reply_ptr=strchr(reply,';');
#	Line 156 | Line 197 | int ihost_configure(ihost_state_t *ihost_state){
197		errf("strdup failed (%m)");
198		return -1;
199		}
200	<	reply=++reply_ptr;
200	>	reply=reply_ptr + 1;
201		reply_ptr=strchr(reply,';');
202		if (reply_ptr==NULL){
203		errf("Incorrect data returned 2");
#	Line 164 | Line 205 | int ihost_configure(ihost_state_t *ihost_state){
205		}
206		*reply_ptr='\0';
207		ihost_state->server_udp_port=atoi(reply);
208	<	reply=++reply_ptr;
208	>	reply=reply_ptr+1;
209		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	<	reply=sock_comm(fm_fd_r, fm_fd_w, "END\n");
215	>	reply=sock_comm(fm_fd_r, fm_fd_w, "END");
216		if((reply== NULL) || (strncasecmp(reply, "ERROR", 5) ==0 )){
217		errf("Server error (%m)");
218		return -1;
219		}
220
221		if(fclose(fm_fd_r) !=0){
222	<	errf("Failed to close FD (%m)");
222	>	errf("Failed to close read FD (%m)");
223		return -1;
224		}
225		if(fclose(fm_fd_w) !=0){
226	<	errf("Failed to close FD (%m)");
226	>	errf("Failed to close write FD (%m)");
227		return -1;
228		}
229
#	Line 207 | Line 248 | int heartbeat(ihost_state_t *ihost_state){
248		return -1;
249		}
250
251	<	memset((char *)&addr, 0, sizeof addr);
251	>	memset(&addr, 0, sizeof addr);
252		addr.sin_family = AF_INET;
253	<	memcpy((char *)&addr.sin_addr, &haddr, sizeof haddr);
253	>	memcpy(&addr.sin_addr, &haddr, sizeof haddr);
254		addr.sin_port =  htons(ihost_state->server_tcp_port);
255
256		if (connect(sd, (struct sockaddr *)&addr, sizeof addr) != 0) {
#	Line 228 | Line 269 | int heartbeat(ihost_state_t *ihost_state){
269		return -1;
270		}
271
272	<	reply=sock_comm(fm_fd_r, fm_fd_w, "HEARTBEAT\n");
273	<	if ((reply==NULL) || (strncasecmp(reply, "ERROR", 2) == 0) ) {
272	>	reply=sock_comm(fm_fd_r, fm_fd_w, "HEARTBEAT");
273	>	if ((reply==NULL) || (strncasecmp(reply, "ERROR", 5) == 0) ) {
274		errf("Server error");
275		return -1;
276		}
277
278	<	reply=sock_comm(fm_fd_r, fm_fd_w, "CONFIG\n");
279	<	if ((reply==NULL) || (strncasecmp(reply, "ERROR", 2) == 0) ) {
278	>	reply=sock_comm(fm_fd_r, fm_fd_w, "CONFIG");
279	>	if ((reply==NULL) || (strncasecmp(reply, "ERROR", 5) == 0) ) {
280		errf("Server error");
281		return -1;
282		}
#	Line 251 | Line 292 | int heartbeat(ihost_state_t *ihost_state){
292		errf("Server error");
293		return -1;
294		}
295	<	if (strncasecmp(reply, "ERROR", 2) == 0){
295	>	if (strncasecmp(reply, "ERROR", 5) == 0){
296		/* Means the config has changed */
297		exitcode=RECONFIGURE_RETURN_CODE;
298		}
299	<	reply=sock_comm(fm_fd_r, fm_fd_w, "KEY\n");
300	<	if ((reply==NULL) || (strncasecmp(reply, "ERROR", 2) == 0) ) {
299	>	reply=sock_comm(fm_fd_r, fm_fd_w, "KEY");
300	>	if ((reply==NULL) || (strncasecmp(reply, "ERROR", 5) == 0) ) {
301		errf("Server error");
302		return -1;
303		}
#	Line 267 | Line 308 | int heartbeat(ihost_state_t *ihost_state){
308		return -1;
309		}
310
311	<	reply=sock_comm(fm_fd_r, fm_fd_w, "END\n");
311	>	reply=sock_comm(fm_fd_r, fm_fd_w, "ENDHEARTBEAT");
312		if((reply== NULL) || (strncasecmp(reply, "ERROR", 5) ==0 )){
313		errf("Server error (%m)");
314		return -1;
315		}
316
317	+	fflush(fm_fd_r);
318	+	fflush(fm_fd_w);
319	+
320	+	if(fclose(fm_fd_r) !=0){
321	+	errf("Failed to close read FD (%m)");
322	+	return -1;
323	+	}
324	+	if(fclose(fm_fd_w) !=0){
325	+	errf("Failed to close write FD (%m)");
326	+	return -1;
327	+	}
328	+
329		return exitcode;
330		}
331
332	+	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	+	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	+	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	+	close(sd);
409	+
410	+	return 0;
411	+	}
412	+
413		int main(int argc, char **argv){
414		ihost_state_t ihost_state;
415	+	int heartbeat_exit;
416	+	int counter=0;
417	+	long udp_time=0, tcp_time=0, stat_grab_time=0, cur_time=0;
418	+	int sleep_delay=0;
419	+	char *xml_stats;
420
421		/* NULL'ify so i can tell if i need to free it or not */
422		ihost_state.fm_host=NULL;
#	Line 299 | Line 437 | int main(int argc, char **argv){
437
438		if(ihost_configure(&ihost_state)!=0){
439		errf("configure failed");
440	+	/* 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		}
444
445	+	for(;;){
446	+	cur_time=time(NULL);
447	+	if(cur_time>=tcp_time){
448	+	/*printf("sending TCP\n");*/
449	+	heartbeat_exit=heartbeat(&ihost_state);
450	+	if(heartbeat_exit==RECONFIGURE_RETURN_CODE){
451	+	/*errf("heartbeat needs to be reconfigured");*/
452	+	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
463	+	if(cur_time>=udp_time){
464	+	/*printf("sending UDP\n");*/
465	+	stat_grab_time=time(NULL);
466	+	if((xml_stats=stat_grab(&ihost_state, counter++)) == NULL){
467	+	errf("Failed to get stats (%m)");
468	+	exit(1);
469	+	}
470	+	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	+	}
475	+
476	+	if(tcp_time<udp_time){
477	+	sleep_delay=tcp_time-time(NULL);
478	+	}else{
479	+	sleep_delay=udp_time-time(NULL);
480	+	}
481	+
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	+	}
485		return 0;
486		}
487

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