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

Comparing projects/cms/source/ihost/ihost.c (file contents):
Revision 1.2 by pajs, Fri May 10 20:05:05 2002 UTC vs.
Revision 1.17 by pajs, Mon May 20 12:28:46 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 versionNo 0.8
35	+	#define RECONFIGURE_RETURN_CODE 2
36	+	#define UDP_MAX_PACKET_SIZE 8192
37	+
38		typedef struct{
39		int fm_port;
40		char *fm_host;
41	<
41	>
42	>	char *my_ip;
43		char *my_fqdn;
44		char *server_fqdn;
45		int server_udp_port;
46		int server_tcp_port;
47	<	long last_modified;
47	>	char *last_modified;
48		char *files_list;
49		char *key;
50		int udp_update_time;
#	Line 24 | Line 52 | typedef struct{
52
53		}ihost_state_t;
54
55	<	char* sock_comm(FILE *f_r, FILE *f_w, char* sendString){
55	>	char* sock_comm(FILE *f_r, FILE *f_w, char *sendString){
56		char *reply;
57	<	fprintf(f_w, "%s", sendString);
57	>	fprintf(f_w, "%s\n", sendString);
58		fflush(f_w);
59		reply=fpgetline(f_r);
60		/* Returns pointer to static buffer */
#	Line 36 | Line 64 | char* sock_comm(FILE *f_r, FILE *f_w, char* sendString
64		int ihost_configure(ihost_state_t *ihost_state){
65		struct sockaddr_in addr;
66		struct in_addr haddr;
67	+	struct sockaddr ip;
68	+	int ip_len;
69		int sd;
70		FILE *fm_fd_r, *fm_fd_w;
71		char *reply;
72		char *reply_ptr;
73
74	+	/* Check to see if anything needs to be free'd */
75	+	if (ihost_state->my_fqdn!=NULL) free(ihost_state->my_fqdn);
76	+	if (ihost_state->server_fqdn!=NULL) free(ihost_state->server_fqdn);
77	+	if (ihost_state->last_modified!=NULL) free(ihost_state->last_modified);
78	+	if (ihost_state->files_list!=NULL) free(ihost_state->files_list);
79	+
80		if ((sd = socket(AF_INET, SOCK_STREAM, PF_UNSPEC)) < 0) {
81		errf("Can't create AF_INET socket (%m)");
82		return -1;
#	Line 51 | Line 87 | int ihost_configure(ihost_state_t *ihost_state){
87		return -1;
88		}
89
90	<	memset((char *)&addr, 0, sizeof addr);
90	>	memset(&addr, 0, sizeof addr);
91		addr.sin_family = AF_INET;
92	<	memcpy((char *)&addr.sin_addr, &haddr, sizeof haddr);
92	>	memcpy(&addr.sin_addr, &haddr, sizeof haddr);
93		addr.sin_port =  htons(ihost_state->fm_port);
94
95		if (connect(sd, (struct sockaddr *)&addr, sizeof addr) != 0) {
#	Line 63 | Line 99 | int ihost_configure(ihost_state_t *ihost_state){
99
100		/* Need to open 2 files, one for reading one for writing, as it gets confused if we only use 1 :) */
101		if ((fm_fd_r=fdopen(sd,"r")) == NULL){
102	<	errf("Failed to open stream (%m)");
102	>	errf("Failed to open read stream (%m)");
103		return -1;
104		}
105
106		if ((fm_fd_w=fdopen(dup(sd),"w")) == NULL){
107	<	errf("Failed to open stream (%m)");
107	>	errf("Failed to open write stream (%m)");
108		return -1;
109		}
110	+	ip_len=sizeof ip;
111	+	memset(&ip, 0, ip_len);
112	+	if((getsockname(sd, &ip, &ip_len)) != 0){
113	+	errf("Failed to get IP address (%m)");
114	+	return -1;
115	+	}
116	+	if (ip.sa_family!=AF_INET){
117	+	errf("sa family is wrong type");
118	+	return -1;
119	+	}
120	+
121	+	if((ihost_state->my_ip=inet_ntoa(((struct sockaddr_in *)&ip)->sin_addr))==NULL){
122	+	errf("Failed to get IP (%m)");
123	+	return -1;
124	+	}
125
126	<	reply=sock_comm(fm_fd_r, fm_fd_w, "STARTCONFIG\n");
126	>	reply=sock_comm(fm_fd_r, fm_fd_w, "STARTCONFIG");
127		if ((reply==NULL) || (strncasecmp(reply, "OK", 2) != 0) ) {
128		errf("Server error");
129		return -1;
130		}
131
132	<	reply=sock_comm(fm_fd_r, fm_fd_w, "LASTMODIFIED\n");
132	>	reply=sock_comm(fm_fd_r, fm_fd_w, "LASTMODIFIED");
133		if((reply== NULL) || (strncasecmp(reply, "ERROR", 5) ==0)){
134		errf("Server error (%m)");
135		return -1;
136		}
137	<	ihost_state->last_modified=atol(reply);
137	>	if((ihost_state->last_modified=strdup(reply)) == NULL){
138	>	errf("strdup failed (%m)");
139	>	return -1;
140	>	}
141
142	<	reply=sock_comm(fm_fd_r, fm_fd_w, "FILELIST\n");
142	>	reply=sock_comm(fm_fd_r, fm_fd_w, "FILELIST");
143		if((reply== NULL) || (strncasecmp(reply, "ERROR", 5) ==0)){
144		errf("Server error (%m)");
145		return -1;
146		}
147	<	if((ihost_state->files_list=strdup(reply)) == NULL){
148	<	errf("strdup failed (%m)");
149	<	return -1;
150	<	}
147	>	if((ihost_state->files_list=strdup(reply)) == NULL){
148	>	errf("strdup failed (%m)");
149	>	return -1;
150	>	}
151
152	<	reply=sock_comm(fm_fd_r, fm_fd_w, "FQDN\n");
152	>	reply=sock_comm(fm_fd_r, fm_fd_w, "FQDN");
153		if((reply== NULL) || (strncasecmp(reply, "ERROR", 5)==0)){
154		errf("Server error (%m)");
155		return -1;
#	Line 105 | Line 159 | int ihost_configure(ihost_state_t *ihost_state){
159		return -1;
160		}
161
162	<	reply=sock_comm(fm_fd_r, fm_fd_w, "UDPUpdateTime\n");
162	>	reply=sock_comm(fm_fd_r, fm_fd_w, "UDPUpdateTime");
163		if(reply== NULL){
164		errf("Server error (%m)");
165		return -1;
#	Line 114 | Line 168 | int ihost_configure(ihost_state_t *ihost_state){
168		ihost_state->udp_update_time=atoi(reply);
169		}
170
171	<	reply=sock_comm(fm_fd_r, fm_fd_w, "TCPUpdateTime\n");
171	>	reply=sock_comm(fm_fd_r, fm_fd_w, "TCPUpdateTime");
172		if(reply== NULL){
173		errf("Server error (%m)");
174		return -1;
#	Line 123 | Line 177 | int ihost_configure(ihost_state_t *ihost_state){
177		ihost_state->tcp_update_time=atoi(reply);
178		}
179
180	<	reply=sock_comm(fm_fd_r, fm_fd_w, "ENDCONFIG\n");
180	>	reply=sock_comm(fm_fd_r, fm_fd_w, "ENDCONFIG");
181		if(reply== NULL){
182		errf("Server error (%m)");
183		return -1;
184		}
185
186	<	reply=sock_comm(fm_fd_r, fm_fd_w, "FILTER\n");
186	>	reply=sock_comm(fm_fd_r, fm_fd_w, "FILTER");
187		if((reply== NULL) || (strncasecmp(reply, "ERROR", 5)==0)){
188	<	errf("Server error (%m)");
188	>	errf("Server error FILTER failed (%m)");
189		return -1;
190		}
191		reply_ptr=strchr(reply,';');
#	Line 144 | Line 198 | int ihost_configure(ihost_state_t *ihost_state){
198		errf("strdup failed (%m)");
199		return -1;
200		}
201	<	reply=++reply_ptr;
201	>	reply=reply_ptr + 1;
202		reply_ptr=strchr(reply,';');
203		if (reply_ptr==NULL){
204		errf("Incorrect data returned 2");
#	Line 152 | Line 206 | int ihost_configure(ihost_state_t *ihost_state){
206		}
207		*reply_ptr='\0';
208		ihost_state->server_udp_port=atoi(reply);
209	<	reply=++reply_ptr;
209	>	reply=reply_ptr+1;
210		ihost_state->server_tcp_port=atoi(reply);
211		if ((ihost_state->server_tcp_port==0) || (ihost_state->server_udp_port==0)){
212		errf("Incorrect data returned 3 ");
213		return -1;
214		}
215
216	<	reply=sock_comm(fm_fd_r, fm_fd_w, "END\n");
216	>	reply=sock_comm(fm_fd_r, fm_fd_w, "END");
217		if((reply== NULL) || (strncasecmp(reply, "ERROR", 5) ==0 )){
218		errf("Server error (%m)");
219		return -1;
220		}
221
222		if(fclose(fm_fd_r) !=0){
223	<	errf("Failed to close FD (%m)");
223	>	errf("Failed to close read FD (%m)");
224		return -1;
225		}
226		if(fclose(fm_fd_w) !=0){
227	<	errf("Failed to close FD (%m)");
227	>	errf("Failed to close write FD (%m)");
228		return -1;
229		}
230
231		return 0;
232	+	}
233
234	+	int heartbeat(ihost_state_t *ihost_state){
235	+	struct sockaddr_in addr;
236	+	struct in_addr haddr;
237	+	int sd;
238	+	FILE *fm_fd_r, *fm_fd_w;
239	+	char *reply;
240	+	int exitcode=0;
241	+
242	+	if ((sd = socket(AF_INET, SOCK_STREAM, PF_UNSPEC)) < 0) {
243	+	errf("Can't create AF_INET socket (%m)");
244	+	return -1;
245	+	}
246	+
247	+	if (get_host_addr(ihost_state->server_fqdn, &haddr) != 0){
248	+	errf("Failed to resolve address %s (%m)", ihost_state->fm_host);
249	+	return -1;
250	+	}
251	+
252	+	memset(&addr, 0, sizeof addr);
253	+	addr.sin_family = AF_INET;
254	+	memcpy(&addr.sin_addr, &haddr, sizeof haddr);
255	+	addr.sin_port =  htons(ihost_state->server_tcp_port);
256	+
257	+	if (connect(sd, (struct sockaddr *)&addr, sizeof addr) != 0) {
258	+	errf("Failed to connect to %s on port %d (%m)", ihost_state->fm_host, ihost_state->fm_port);
259	+	return -1;
260	+	}
261	+
262	+	/* Need to open 2 files, one for reading one for writing, as it gets confused if we only use 1 :) */
263	+	if ((fm_fd_r=fdopen(sd,"r")) == NULL){
264	+	errf("Failed to open stream (%m)");
265	+	return -1;
266	+	}
267	+
268	+	if ((fm_fd_w=fdopen(dup(sd),"w")) == NULL){
269	+	errf("Failed to open stream (%m)");
270	+	return -1;
271	+	}
272	+
273	+	reply=sock_comm(fm_fd_r, fm_fd_w, "HEARTBEAT");
274	+	if ((reply==NULL) || (strncasecmp(reply, "ERROR", 5) == 0) ) {
275	+	errf("Server error");
276	+	return -1;
277	+	}
278	+
279	+	reply=sock_comm(fm_fd_r, fm_fd_w, "CONFIG");
280	+	if ((reply==NULL) || (strncasecmp(reply, "ERROR", 5) == 0) ) {
281	+	errf("Server error");
282	+	return -1;
283	+	}
284	+
285	+	reply=sock_comm(fm_fd_r, fm_fd_w, ihost_state->files_list);
286	+	if ((reply==NULL) || (strncasecmp(reply, "OK", 2) != 0) ) {
287	+	errf("Server error");
288	+	return -1;
289	+	}
290	+
291	+	reply=sock_comm(fm_fd_r, fm_fd_w, ihost_state->last_modified);
292	+	if (reply==NULL) {
293	+	errf("Server error");
294	+	return -1;
295	+	}
296	+	if (strncasecmp(reply, "ERROR", 5) == 0){
297	+	/* Means the config has changed */
298	+	exitcode=RECONFIGURE_RETURN_CODE;
299	+	}
300	+	reply=sock_comm(fm_fd_r, fm_fd_w, "KEY");
301	+	if ((reply==NULL) || (strncasecmp(reply, "ERROR", 5) == 0) ) {
302	+	errf("Server error");
303	+	return -1;
304	+	}
305	+	if (ihost_state->key!=NULL) free(ihost_state->key);
306	+
307	+	if((ihost_state->key=strdup(reply)) == NULL){
308	+	errf("strdup failed (%m)");
309	+	return -1;
310	+	}
311	+
312	+	reply=sock_comm(fm_fd_r, fm_fd_w, "ENDHEARTBEAT");
313	+	if((reply== NULL) || (strncasecmp(reply, "ERROR", 5) ==0 )){
314	+	errf("Server error (%m)");
315	+	return -1;
316	+	}
317	+
318	+	fflush(fm_fd_r);
319	+	fflush(fm_fd_w);
320	+
321	+	if(fclose(fm_fd_r) !=0){
322	+	errf("Failed to close read FD (%m)");
323	+	return -1;
324	+	}
325	+	if(fclose(fm_fd_w) !=0){
326	+	errf("Failed to close write FD (%m)");
327	+	return -1;
328	+	}
329	+
330	+	return exitcode;
331		}
332
333	<	int main(){
333	>	char *stat_grab(ihost_state_t *ihost_state, int counter){
334	>	#define NUM_STATS 9
335	>	char *stats[NUM_STATS];
336	>	char *xml_data=NULL;
337	>	char *xml_data_p;
338	>	int x=0;
339	>
340	>	stats[0]=get_cpu_stats();
341	>	stats[1]=get_disk_stats();
342	>	stats[2]=get_load_stats();
343	>	stats[3]=get_memory_stats();
344	>	stats[4]=get_os_info();
345	>	stats[5]=get_page_stats();
346	>	stats[6]=get_process_stats();
347	>	stats[7]=get_swap_stats();
348	>	stats[8]=get_user_stats();
349	>
350	>	for(;x<NUM_STATS;x++){
351	>	if(stats[x]==NULL){
352	>	return NULL;
353	>	}
354	>	if(xml_data==NULL){
355	>	if((xml_data=strf("%s", stats[x])) == NULL){
356	>	errf("str failed (%m)");
357	>	return NULL;
358	>	}
359	>	}else{
360	>	xml_data_p=xml_data;
361	>	if((xml_data=strf("%s%s", xml_data, stats[x])) == NULL){
362	>	errf("str failed (%m)");
363	>	return NULL;
364	>	}
365	>	free(xml_data_p);
366	>	}
367	>	free(stats[x]);
368	>	}
369	>	xml_data_p=xml_data;
370	>	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);
371	>	free(xml_data_p);
372	>
373	>	return xml_data;
374	>	}
375	>
376	>	int send_stats(ihost_state_t *ihost_state, char *data_stream){
377	>	struct sockaddr_in addr;
378	>	struct in_addr haddr;
379	>
380	>	int sd;
381	>	size_t len;
382	>
383	>	len=strlen(data_stream);
384	>	if(len>UDP_MAX_PACKET_SIZE){
385	>	errf("Too big to send to server. Please reconfigure client and server and recompile");
386	>	exit(1);
387	>	}
388	>
389	>	if (get_host_addr(ihost_state->server_fqdn, &haddr) != 0){
390	>	errf("Failed to resolve address %s (%m)", ihost_state->fm_host);
391	>	return -1;
392	>	}
393	>
394	>	if((sd=socket(PF_INET, SOCK_DGRAM, IPPROTO_UDP)) < 0){
395	>	errf("failed to create UDP socket (%m)");
396	>	return -1;
397	>	}
398	>
399	>	memset(&addr, 0, sizeof(addr));
400	>	addr.sin_family=AF_INET;
401	>	memcpy((char *)&addr.sin_addr, &haddr, sizeof haddr);
402	>	addr.sin_port =  htons(ihost_state->server_udp_port);
403	>
404	>	if((sendto(sd, data_stream, len, 0, (struct sockaddr *) &addr, sizeof(addr))) != len){
405	>	errf("Send the wrong number of bytes (%m)");
406	>	return -1;
407	>	}
408	>
409	>	close(sd);
410	>
411	>	return 0;
412	>	}
413	>
414	>	void usage(char *progname){
415	>	fprintf(stderr, "Usage %s [options] server port\n", progname);
416	>	fprintf(stderr, "Options\n");
417	>	fprintf(stderr, "  -v           Verbose, the more v flags the more verbose, eg -vv\n");
418	>	fprintf(stderr, "  -d           Daemon mode, self backgrounding\n");
419	>	fprintf(stderr, "  -s           Send errors to syslog\n");
420	>	fprintf(stderr, "  -V           Print version number\n");
421	>	fprintf(stderr, "  -h           Prints this help page\n");
422	>	exit(1);
423	>	}
424	>
425	>	int main(int argc, char **argv){
426		ihost_state_t ihost_state;
427	+	int heartbeat_exit;
428	+	int counter=0;
429	+	long udp_time=0, tcp_time=0, stat_grab_time=0, cur_time=0;
430	+	int sleep_delay=0;
431	+	char *xml_stats;
432
433	<	ihost_state.fm_host=strdup("kernow.ukc.ac.uk");
434	<	ihost_state.fm_port=4567;
433	>	int cmdopt;
434	>	extern int optind;
435	>	int verbose=0, daemon=0, syslog=0 ;
436	>
437	>	/* NULL'ify so i can tell if i need to free it or not */
438	>	ihost_state.fm_host=NULL;
439	>	ihost_state.my_fqdn=NULL;
440	>	ihost_state.server_fqdn=NULL;
441	>	ihost_state.last_modified=NULL;
442	>	ihost_state.files_list=NULL;
443	>	ihost_state.key=NULL;
444
445	+	errf_set_progname(argv[0]);
446	+
447	+	while((cmdopt=getopt(argc, argv, "vdshV")) != -1){
448	+	switch(cmdopt){
449	+	case 'v':
450	+	verbose++;
451	+	break;
452	+
453	+	case 'd':
454	+	daemon=1;
455	+	break;
456	+
457	+	case 's':
458	+	syslog=1;
459	+	break;
460	+
461	+	case 'h':
462	+	usage(argv[0]);
463	+	break;
464	+	case 'V':
465	+	errf("%s version %f",argv[0], versionNo);
466	+	break;
467	+	default:
468	+	usage(argv[0]);
469	+	exit(1);
470	+	}
471	+	}
472	+
473	+	if(argc!=optind+2){
474	+	usage(argv[0]);
475	+	exit(1);
476	+	}
477	+	ihost_state.fm_host=argv[optind];
478	+	ihost_state.fm_port=atoi(argv[optind+1]);
479	+	if(ihost_state.fm_port==0){
480	+	errf("Invalid port number");
481	+	usage(argv[0]);
482	+	}
483	+	printf("%s\n%d\n",ihost_state.fm_host, ihost_state.fm_port);
484	+
485		if(ihost_configure(&ihost_state)!=0){
486		errf("configure failed");
487	+	/* Ok, ideally we prob should have 2 copies of the structure and carry on if this
488	+	happens.. But we dont :) (at the moment) */
489	+	exit(1);
490		}
491
492	+	for(;;){
493	+	cur_time=time(NULL);
494	+	if(cur_time>=tcp_time){
495	+	/*printf("sending TCP\n");*/
496	+	heartbeat_exit=heartbeat(&ihost_state);
497	+	if(heartbeat_exit==RECONFIGURE_RETURN_CODE){
498	+	/*errf("heartbeat needs to be reconfigured");*/
499	+	ihost_configure(&ihost_state);
500	+	/* So udp doesn't wait til next sending before updating */
501	+	udp_time=0;
502	+	}
503	+	if(heartbeat_exit==-1){
504	+	errf("ah crap");
505	+	exit(1);
506	+	}
507	+	tcp_time=time(NULL)+ihost_state.tcp_update_time;
508	+	}
509	+
510	+	if(cur_time>=udp_time){
511	+	/*printf("sending UDP\n");*/
512	+	stat_grab_time=time(NULL);
513	+	if((xml_stats=stat_grab(&ihost_state, counter++)) == NULL){
514	+	errf("Failed to get stats (%m)");
515	+	exit(1);
516	+	}
517	+	stat_grab_time=time(NULL)-stat_grab_time;
518	+	send_stats(&ihost_state, xml_stats);
519	+	free(xml_stats);
520	+	udp_time=time(NULL)+ihost_state.udp_update_time-stat_grab_time;
521	+	}
522	+
523	+	if(tcp_time<udp_time){
524	+	sleep_delay=tcp_time-time(NULL);
525	+	}else{
526	+	sleep_delay=udp_time-time(NULL);
527	+	}
528	+
529	+	/*printf("tcp epoc: %ld \t udp epoc: %ld\ntime:%ld \tsleeping: %d\n", tcp_time, udp_time, time(NULL), sleep_delay);*/
530	+	if(sleep_delay>0) sleep(sleep_delay);
531	+	}
532		return 0;
533		}
534

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