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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 1.16 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;
45		int server_tcp_port;
46	<	long last_modified;
46	>	char *last_modified;
47		char *files_list;
48		char *key;
49		int udp_update_time;
#	Line 24 | 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 36 | 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 */
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		if ((sd = socket(AF_INET, SOCK_STREAM, PF_UNSPEC)) < 0) {
80		errf("Can't create AF_INET socket (%m)");
81		return -1;
#	Line 51 | 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 63 | 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;
135		}
136	<	ihost_state->last_modified=atol(reply);
136	>	if((ihost_state->last_modified=strdup(reply)) == NULL){
137	>	errf("strdup failed (%m)");
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 105 | 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 114 | 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 123 | 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 144 | 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 152 | 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
230		return 0;
231	+	}
232
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	+	memset(&addr, 0, sizeof addr);
252	+	addr.sin_family = AF_INET;
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) {
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	+	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");
279	+	if ((reply==NULL) || (strncasecmp(reply, "ERROR", 5) == 0) ) {
280	+	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	+	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");
300	+	if ((reply==NULL) || (strncasecmp(reply, "ERROR", 5) == 0) ) {
301	+	errf("Server error");
302	+	return -1;
303	+	}
304	+	if (ihost_state->key!=NULL) free(ihost_state->key);
305	+
306	+	if((ihost_state->key=strdup(reply)) == NULL){
307	+	errf("strdup failed (%m)");
308	+	return -1;
309	+	}
310	+
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	<	int main(){
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	<	ihost_state.fm_host=strdup("kernow.ukc.ac.uk");
422	<	ihost_state.fm_port=4567;
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	+	errf_set_progname(argv[0]);
430	+	if(argc!=3){
431	+	errf_usage("<host> <port>");
432	+	exit(1);
433	+	}
434	+
435	+	ihost_state.fm_host=argv[1];
436	+	ihost_state.fm_port=atoi(argv[2]);
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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