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

Comparing projects/cms/source/ihost/ihost.c (file contents):
Revision 1.3 by pajs, Fri May 10 21:32:38 2002 UTC vs.
Revision 1.11 by tdb, Sat May 18 18:15:56 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>
21		#include <sys/socket.h>
22		#include <stdlib.h>
23		#include <unistd.h>
24		#include <syslog.h>
25		#include <netinet/in.h>
26	<	#include <ukcprog.h>
26	>	#include "ukcprog.h"
27		#include <netdb.h>
28		#include <strings.h>
29	+	#include "statgrab.h"
30
31	+	#define RECONFIGURE_RETURN_CODE 2
32	+	#define UDP_MAX_PACKET_SIZE 8192
33	+
34		typedef struct{
35		int fm_port;
36		char *fm_host;
#	Line 16 | Line 39 | typedef struct{
39		char *server_fqdn;
40		int server_udp_port;
41		int server_tcp_port;
42	<	long last_modified;
42	>	char *last_modified;
43		char *files_list;
44		char *key;
45		int udp_update_time;
#	Line 24 | Line 47 | typedef struct{
47
48		}ihost_state_t;
49
50	<	char* sock_comm(FILE *f_r, FILE *f_w, char* sendString){
50	>	char* sock_comm(FILE *f_r, FILE *f_w, char *sendString){
51		char *reply;
52	<	fprintf(f_w, "%s", sendString);
52	>	fprintf(f_w, "%s\n", sendString);
53		fflush(f_w);
54		reply=fpgetline(f_r);
55		/* Returns pointer to static buffer */
#	Line 41 | Line 64 | int ihost_configure(ihost_state_t *ihost_state){
64		char *reply;
65		char *reply_ptr;
66
67	+	/* Check to see if anything needs to be free'd */
68	+	if (ihost_state->my_fqdn!=NULL) free(ihost_state->my_fqdn);
69	+	if (ihost_state->server_fqdn!=NULL) free(ihost_state->server_fqdn);
70	+	if (ihost_state->last_modified!=NULL) free(ihost_state->last_modified);
71	+	if (ihost_state->files_list!=NULL) free(ihost_state->files_list);
72	+
73		if ((sd = socket(AF_INET, SOCK_STREAM, PF_UNSPEC)) < 0) {
74		errf("Can't create AF_INET socket (%m)");
75		return -1;
#	Line 51 | Line 80 | int ihost_configure(ihost_state_t *ihost_state){
80		return -1;
81		}
82
83	<	memset((char *)&addr, 0, sizeof addr);
83	>	memset(&addr, 0, sizeof addr);
84		addr.sin_family = AF_INET;
85	<	memcpy((char *)&addr.sin_addr, &haddr, sizeof haddr);
85	>	memcpy(&addr.sin_addr, &haddr, sizeof haddr);
86		addr.sin_port =  htons(ihost_state->fm_port);
87
88		if (connect(sd, (struct sockaddr *)&addr, sizeof addr) != 0) {
#	Line 63 | Line 92 | int ihost_configure(ihost_state_t *ihost_state){
92
93		/* Need to open 2 files, one for reading one for writing, as it gets confused if we only use 1 :) */
94		if ((fm_fd_r=fdopen(sd,"r")) == NULL){
95	<	errf("Failed to open stream (%m)");
95	>	errf("Failed to open read stream (%m)");
96		return -1;
97		}
98
99		if ((fm_fd_w=fdopen(dup(sd),"w")) == NULL){
100	<	errf("Failed to open stream (%m)");
100	>	errf("Failed to open write stream (%m)");
101		return -1;
102		}
103
104	<	reply=sock_comm(fm_fd_r, fm_fd_w, "STARTCONFIG\n");
104	>	reply=sock_comm(fm_fd_r, fm_fd_w, "STARTCONFIG");
105		if ((reply==NULL) || (strncasecmp(reply, "OK", 2) != 0) ) {
106		errf("Server error");
107		return -1;
108		}
109
110	<	reply=sock_comm(fm_fd_r, fm_fd_w, "LASTMODIFIED\n");
110	>	reply=sock_comm(fm_fd_r, fm_fd_w, "LASTMODIFIED");
111		if((reply== NULL) || (strncasecmp(reply, "ERROR", 5) ==0)){
112		errf("Server error (%m)");
113		return -1;
114		}
115	<	ihost_state->last_modified=atol(reply);
115	>	if((ihost_state->last_modified=strdup(reply)) == NULL){
116	>	errf("strdup failed (%m)");
117	>	return -1;
118	>	}
119
120	<	reply=sock_comm(fm_fd_r, fm_fd_w, "FILELIST\n");
120	>	reply=sock_comm(fm_fd_r, fm_fd_w, "FILELIST");
121		if((reply== NULL) || (strncasecmp(reply, "ERROR", 5) ==0)){
122		errf("Server error (%m)");
123		return -1;
124		}
125	<	if((ihost_state->files_list=strdup(reply)) == NULL){
126	<	errf("strdup failed (%m)");
127	<	return -1;
128	<	}
125	>	if((ihost_state->files_list=strdup(reply)) == NULL){
126	>	errf("strdup failed (%m)");
127	>	return -1;
128	>	}
129
130	<	reply=sock_comm(fm_fd_r, fm_fd_w, "FQDN\n");
130	>	reply=sock_comm(fm_fd_r, fm_fd_w, "FQDN");
131		if((reply== NULL) || (strncasecmp(reply, "ERROR", 5)==0)){
132		errf("Server error (%m)");
133		return -1;
#	Line 105 | Line 137 | int ihost_configure(ihost_state_t *ihost_state){
137		return -1;
138		}
139
140	<	reply=sock_comm(fm_fd_r, fm_fd_w, "UDPUpdateTime\n");
140	>	reply=sock_comm(fm_fd_r, fm_fd_w, "UDPUpdateTime");
141		if(reply== NULL){
142		errf("Server error (%m)");
143		return -1;
#	Line 114 | Line 146 | int ihost_configure(ihost_state_t *ihost_state){
146		ihost_state->udp_update_time=atoi(reply);
147		}
148
149	<	reply=sock_comm(fm_fd_r, fm_fd_w, "TCPUpdateTime\n");
149	>	reply=sock_comm(fm_fd_r, fm_fd_w, "TCPUpdateTime");
150		if(reply== NULL){
151		errf("Server error (%m)");
152		return -1;
#	Line 123 | Line 155 | int ihost_configure(ihost_state_t *ihost_state){
155		ihost_state->tcp_update_time=atoi(reply);
156		}
157
158	<	reply=sock_comm(fm_fd_r, fm_fd_w, "ENDCONFIG\n");
158	>	reply=sock_comm(fm_fd_r, fm_fd_w, "ENDCONFIG");
159		if(reply== NULL){
160		errf("Server error (%m)");
161		return -1;
162		}
163
164	<	reply=sock_comm(fm_fd_r, fm_fd_w, "FILTER\n");
164	>	reply=sock_comm(fm_fd_r, fm_fd_w, "FILTER");
165		if((reply== NULL) || (strncasecmp(reply, "ERROR", 5)==0)){
166	<	errf("Server error (%m)");
166	>	errf("Server error FILTER failed (%m)");
167		return -1;
168		}
169		reply_ptr=strchr(reply,';');
#	Line 144 | Line 176 | int ihost_configure(ihost_state_t *ihost_state){
176		errf("strdup failed (%m)");
177		return -1;
178		}
179	<	reply=++reply_ptr;
179	>	reply=reply_ptr + 1;
180		reply_ptr=strchr(reply,';');
181		if (reply_ptr==NULL){
182		errf("Incorrect data returned 2");
#	Line 152 | Line 184 | int ihost_configure(ihost_state_t *ihost_state){
184		}
185		*reply_ptr='\0';
186		ihost_state->server_udp_port=atoi(reply);
187	<	reply=++reply_ptr;
187	>	reply=reply_ptr+1;
188		ihost_state->server_tcp_port=atoi(reply);
189		if ((ihost_state->server_tcp_port==0) || (ihost_state->server_udp_port==0)){
190		errf("Incorrect data returned 3 ");
191		return -1;
192		}
193
194	<	reply=sock_comm(fm_fd_r, fm_fd_w, "END\n");
194	>	reply=sock_comm(fm_fd_r, fm_fd_w, "END");
195		if((reply== NULL) || (strncasecmp(reply, "ERROR", 5) ==0 )){
196		errf("Server error (%m)");
197		return -1;
198		}
199
200		if(fclose(fm_fd_r) !=0){
201	<	errf("Failed to close FD (%m)");
201	>	errf("Failed to close read FD (%m)");
202		return -1;
203		}
204		if(fclose(fm_fd_w) !=0){
205	<	errf("Failed to close FD (%m)");
205	>	errf("Failed to close write FD (%m)");
206		return -1;
207		}
208
209		return 0;
210		}
211
212	+	int heartbeat(ihost_state_t *ihost_state){
213	+	struct sockaddr_in addr;
214	+	struct in_addr haddr;
215	+	int sd;
216	+	FILE *fm_fd_r, *fm_fd_w;
217	+	char *reply;
218	+	int exitcode=0;
219	+
220	+	if ((sd = socket(AF_INET, SOCK_STREAM, PF_UNSPEC)) < 0) {
221	+	errf("Can't create AF_INET socket (%m)");
222	+	return -1;
223	+	}
224	+
225	+	if (get_host_addr(ihost_state->server_fqdn, &haddr) != 0){
226	+	errf("Failed to resolve address %s (%m)", ihost_state->fm_host);
227	+	return -1;
228	+	}
229	+
230	+	memset(&addr, 0, sizeof addr);
231	+	addr.sin_family = AF_INET;
232	+	memcpy(&addr.sin_addr, &haddr, sizeof haddr);
233	+	addr.sin_port =  htons(ihost_state->server_tcp_port);
234	+
235	+	if (connect(sd, (struct sockaddr *)&addr, sizeof addr) != 0) {
236	+	errf("Failed to connect to %s on port %d (%m)", ihost_state->fm_host, ihost_state->fm_port);
237	+	return -1;
238	+	}
239	+
240	+	/* Need to open 2 files, one for reading one for writing, as it gets confused if we only use 1 :) */
241	+	if ((fm_fd_r=fdopen(sd,"r")) == NULL){
242	+	errf("Failed to open stream (%m)");
243	+	return -1;
244	+	}
245	+
246	+	if ((fm_fd_w=fdopen(dup(sd),"w")) == NULL){
247	+	errf("Failed to open stream (%m)");
248	+	return -1;
249	+	}
250	+
251	+	reply=sock_comm(fm_fd_r, fm_fd_w, "HEARTBEAT");
252	+	if ((reply==NULL) || (strncasecmp(reply, "ERROR", 5) == 0) ) {
253	+	errf("Server error");
254	+	return -1;
255	+	}
256	+
257	+	reply=sock_comm(fm_fd_r, fm_fd_w, "CONFIG");
258	+	if ((reply==NULL) || (strncasecmp(reply, "ERROR", 5) == 0) ) {
259	+	errf("Server error");
260	+	return -1;
261	+	}
262	+
263	+	reply=sock_comm(fm_fd_r, fm_fd_w, ihost_state->files_list);
264	+	if ((reply==NULL) || (strncasecmp(reply, "OK", 2) != 0) ) {
265	+	errf("Server error");
266	+	return -1;
267	+	}
268	+
269	+	reply=sock_comm(fm_fd_r, fm_fd_w, ihost_state->last_modified);
270	+	if (reply==NULL) {
271	+	errf("Server error");
272	+	return -1;
273	+	}
274	+	if (strncasecmp(reply, "ERROR", 5) == 0){
275	+	/* Means the config has changed */
276	+	exitcode=RECONFIGURE_RETURN_CODE;
277	+	}
278	+	reply=sock_comm(fm_fd_r, fm_fd_w, "KEY");
279	+	if ((reply==NULL) || (strncasecmp(reply, "ERROR", 5) == 0) ) {
280	+	errf("Server error");
281	+	return -1;
282	+	}
283	+	if (ihost_state->key!=NULL) free(ihost_state->key);
284	+
285	+	if((ihost_state->key=strdup(reply)) == NULL){
286	+	errf("strdup failed (%m)");
287	+	return -1;
288	+	}
289	+
290	+	reply=sock_comm(fm_fd_r, fm_fd_w, "ENDHEARTBEAT");
291	+	if((reply== NULL) || (strncasecmp(reply, "ERROR", 5) ==0 )){
292	+	errf("Server error (%m)");
293	+	return -1;
294	+	}
295	+
296	+	fflush(fm_fd_r);
297	+	fflush(fm_fd_w);
298	+
299	+	if(fclose(fm_fd_r) !=0){
300	+	errf("Failed to close read FD (%m)");
301	+	return -1;
302	+	}
303	+	if(fclose(fm_fd_w) !=0){
304	+	errf("Failed to close write FD (%m)");
305	+	return -1;
306	+	}
307	+
308	+	return exitcode;
309	+	}
310	+
311	+	char *stat_grab(ihost_state_t *ihost_state, int counter){
312	+	#define NUM_STATS 9
313	+	char *stats[NUM_STATS];
314	+	char *xml_data=NULL;
315	+	char *xml_data_p;
316	+	int x=0;
317	+
318	+	stats[0]=get_cpu_stats();
319	+	stats[1]=get_disk_stats();
320	+	stats[2]=get_load_stats();
321	+	stats[3]=get_memory_stats();
322	+	stats[4]=get_os_info();
323	+	stats[5]=get_page_stats();
324	+	stats[6]=get_process_stats();
325	+	stats[7]=get_swap_stats();
326	+	stats[8]=get_user_stats();
327	+
328	+	for(;x<NUM_STATS;x++){
329	+	if(stats[x]==NULL){
330	+	return NULL;
331	+	}
332	+	if(xml_data==NULL){
333	+	if((xml_data=strf("%s", stats[x])) == NULL){
334	+	errf("str failed (%m)");
335	+	return NULL;
336	+	}
337	+	}else{
338	+	xml_data_p=xml_data;
339	+	if((xml_data=strf("%s%s", xml_data, stats[x])) == NULL){
340	+	errf("str failed (%m)");
341	+	return NULL;
342	+	}
343	+	free(xml_data_p);
344	+	}
345	+	free(stats[x]);
346	+	}
347	+	xml_data_p=xml_data;
348	+	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), "127.0.0.1", ihost_state->key, xml_data);
349	+	free(xml_data_p);
350	+
351	+	return xml_data;
352	+	}
353	+
354	+	int send_stats(ihost_state_t *ihost_state, char *data_stream){
355	+	struct sockaddr_in addr;
356	+	struct in_addr haddr;
357	+
358	+	int sd;
359	+	size_t len;
360	+
361	+	len=strlen(data_stream);
362	+	if(len>UDP_MAX_PACKET_SIZE){
363	+	errf("Too big to send to server. Please reconfigure client and server and recompile");
364	+	exit(1);
365	+	}
366	+
367	+	if (get_host_addr(ihost_state->server_fqdn, &haddr) != 0){
368	+	errf("Failed to resolve address %s (%m)", ihost_state->fm_host);
369	+	return -1;
370	+	}
371	+
372	+	if((sd=socket(PF_INET, SOCK_DGRAM, IPPROTO_UDP)) < 0){
373	+	errf("failed to create UDP socket (%m)");
374	+	return -1;
375	+	}
376	+
377	+	memset(&addr, 0, sizeof(addr));
378	+	addr.sin_family=AF_INET;
379	+	memcpy((char *)&addr.sin_addr, &haddr, sizeof haddr);
380	+	addr.sin_port =  htons(ihost_state->server_udp_port);
381	+
382	+	if((sendto(sd, data_stream, len, 0, (struct sockaddr *) &addr, sizeof(addr))) != len){
383	+	errf("Send the wrong number of bytes (%m)");
384	+	return -1;
385	+	}
386	+
387	+	close(sd);
388	+
389	+	return 0;
390	+	}
391	+
392		int main(int argc, char **argv){
393		ihost_state_t ihost_state;
394	+	int heartbeat_exit;
395	+	int counter=0;
396	+	long udp_time=0, tcp_time=0, stat_grab_time=0, cur_time=0;
397	+	int sleep_delay=0;
398	+	char *xml_stats;
399	+
400	+	/* NULL'ify so i can tell if i need to free it or not */
401	+	ihost_state.fm_host=NULL;
402	+	ihost_state.my_fqdn=NULL;
403	+	ihost_state.server_fqdn=NULL;
404	+	ihost_state.last_modified=NULL;
405	+	ihost_state.files_list=NULL;
406	+	ihost_state.key=NULL;
407	+
408		errf_set_progname(argv[0]);
409		if(argc!=3){
410		errf_usage("<host> <port>");
#	Line 190 | Line 416 | int main(int argc, char **argv){
416
417		if(ihost_configure(&ihost_state)!=0){
418		errf("configure failed");
419	+	/* Ok, ideally we prob should have 2 copies of the structure and carry on if this
420	+	happens.. But we dont :) (at the moment) */
421	+	exit(1);
422		}
423
424	+	for(;;){
425	+	cur_time=time(NULL);
426	+	if(cur_time>=tcp_time){
427	+	/*printf("sending TCP\n");*/
428	+	heartbeat_exit=heartbeat(&ihost_state);
429	+	if(heartbeat_exit==RECONFIGURE_RETURN_CODE){
430	+	/*errf("heartbeat needs to be reconfigured");*/
431	+	ihost_configure(&ihost_state);
432	+	/* So udp doesn't wait til next sending before updating */
433	+	udp_time=0;
434	+	}
435	+	if(heartbeat_exit==-1){
436	+	errf("ah crap");
437	+	exit(1);
438	+	}
439	+	tcp_time=time(NULL)+ihost_state.tcp_update_time;
440	+	}
441	+
442	+	if(cur_time>=udp_time){
443	+	/*printf("sending UDP\n");*/
444	+	stat_grab_time=time(NULL);
445	+	if((xml_stats=stat_grab(&ihost_state, counter)) == NULL){
446	+	errf("Failed to get stats (%m)");
447	+	exit(1);
448	+	}
449	+	stat_grab_time=time(NULL)-stat_grab_time;
450	+	send_stats(&ihost_state, xml_stats);
451	+	free(xml_stats);
452	+	udp_time=time(NULL)+ihost_state.udp_update_time-stat_grab_time;
453	+	}
454	+
455	+	if(tcp_time<udp_time){
456	+	sleep_delay=tcp_time-time(NULL);
457	+	}else{
458	+	sleep_delay=udp_time-time(NULL);
459	+	}
460	+
461	+	/*printf("tcp epoc: %ld \t udp epoc: %ld\ntime:%ld \tsleeping: %d\n", tcp_time, udp_time, time(NULL), sleep_delay);*/
462	+	if(sleep_delay>0) sleep(sleep_delay);
463	+	}
464		return 0;
465		}
466

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