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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 1.14 by pajs, Sun May 19 14:58:06 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
32	+	#define RECONFIGURE_RETURN_CODE 2
33	+	#define UDP_MAX_PACKET_SIZE 8192
34	+
35		typedef struct{
36		int fm_port;
37		char *fm_host;
#	Line 16 | Line 40 | typedef struct{
40		char *server_fqdn;
41		int server_udp_port;
42		int server_tcp_port;
43	<	long last_modified;
43	>	char *last_modified;
44		char *files_list;
45		char *key;
46		int udp_update_time;
#	Line 24 | Line 48 | typedef struct{
48
49		}ihost_state_t;
50
51	<	char* sock_comm(FILE *f_r, FILE *f_w, char* sendString){
51	>	char* sock_comm(FILE *f_r, FILE *f_w, char *sendString){
52		char *reply;
53	<	fprintf(f_w, "%s", sendString);
53	>	fprintf(f_w, "%s\n", sendString);
54		fflush(f_w);
55		reply=fpgetline(f_r);
56		/* Returns pointer to static buffer */
#	Line 41 | Line 65 | int ihost_configure(ihost_state_t *ihost_state){
65		char *reply;
66		char *reply_ptr;
67
68	+	/* Check to see if anything needs to be free'd */
69	+	if (ihost_state->my_fqdn!=NULL) free(ihost_state->my_fqdn);
70	+	if (ihost_state->server_fqdn!=NULL) free(ihost_state->server_fqdn);
71	+	if (ihost_state->last_modified!=NULL) free(ihost_state->last_modified);
72	+	if (ihost_state->files_list!=NULL) free(ihost_state->files_list);
73	+
74		if ((sd = socket(AF_INET, SOCK_STREAM, PF_UNSPEC)) < 0) {
75		errf("Can't create AF_INET socket (%m)");
76		return -1;
#	Line 51 | Line 81 | int ihost_configure(ihost_state_t *ihost_state){
81		return -1;
82		}
83
84	<	memset((char *)&addr, 0, sizeof addr);
84	>	memset(&addr, 0, sizeof addr);
85		addr.sin_family = AF_INET;
86	<	memcpy((char *)&addr.sin_addr, &haddr, sizeof haddr);
86	>	memcpy(&addr.sin_addr, &haddr, sizeof haddr);
87		addr.sin_port =  htons(ihost_state->fm_port);
88
89		if (connect(sd, (struct sockaddr *)&addr, sizeof addr) != 0) {
#	Line 63 | Line 93 | int ihost_configure(ihost_state_t *ihost_state){
93
94		/* Need to open 2 files, one for reading one for writing, as it gets confused if we only use 1 :) */
95		if ((fm_fd_r=fdopen(sd,"r")) == NULL){
96	<	errf("Failed to open stream (%m)");
96	>	errf("Failed to open read stream (%m)");
97		return -1;
98		}
99
100		if ((fm_fd_w=fdopen(dup(sd),"w")) == NULL){
101	<	errf("Failed to open stream (%m)");
101	>	errf("Failed to open write stream (%m)");
102		return -1;
103		}
104
105	<	reply=sock_comm(fm_fd_r, fm_fd_w, "STARTCONFIG\n");
105	>	reply=sock_comm(fm_fd_r, fm_fd_w, "STARTCONFIG");
106		if ((reply==NULL) || (strncasecmp(reply, "OK", 2) != 0) ) {
107		errf("Server error");
108		return -1;
109		}
110
111	<	reply=sock_comm(fm_fd_r, fm_fd_w, "LASTMODIFIED\n");
111	>	reply=sock_comm(fm_fd_r, fm_fd_w, "LASTMODIFIED");
112		if((reply== NULL) || (strncasecmp(reply, "ERROR", 5) ==0)){
113		errf("Server error (%m)");
114		return -1;
115		}
116	<	ihost_state->last_modified=atol(reply);
116	>	if((ihost_state->last_modified=strdup(reply)) == NULL){
117	>	errf("strdup failed (%m)");
118	>	return -1;
119	>	}
120
121	<	reply=sock_comm(fm_fd_r, fm_fd_w, "FILELIST\n");
121	>	reply=sock_comm(fm_fd_r, fm_fd_w, "FILELIST");
122		if((reply== NULL) || (strncasecmp(reply, "ERROR", 5) ==0)){
123		errf("Server error (%m)");
124		return -1;
125		}
126	<	if((ihost_state->files_list=strdup(reply)) == NULL){
127	<	errf("strdup failed (%m)");
128	<	return -1;
129	<	}
126	>	if((ihost_state->files_list=strdup(reply)) == NULL){
127	>	errf("strdup failed (%m)");
128	>	return -1;
129	>	}
130
131	<	reply=sock_comm(fm_fd_r, fm_fd_w, "FQDN\n");
131	>	reply=sock_comm(fm_fd_r, fm_fd_w, "FQDN");
132		if((reply== NULL) || (strncasecmp(reply, "ERROR", 5)==0)){
133		errf("Server error (%m)");
134		return -1;
#	Line 105 | 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, "UDPUpdateTime\n");
141	>	reply=sock_comm(fm_fd_r, fm_fd_w, "UDPUpdateTime");
142		if(reply== NULL){
143		errf("Server error (%m)");
144		return -1;
#	Line 114 | Line 147 | int ihost_configure(ihost_state_t *ihost_state){
147		ihost_state->udp_update_time=atoi(reply);
148		}
149
150	<	reply=sock_comm(fm_fd_r, fm_fd_w, "TCPUpdateTime\n");
150	>	reply=sock_comm(fm_fd_r, fm_fd_w, "TCPUpdateTime");
151		if(reply== NULL){
152		errf("Server error (%m)");
153		return -1;
#	Line 123 | Line 156 | int ihost_configure(ihost_state_t *ihost_state){
156		ihost_state->tcp_update_time=atoi(reply);
157		}
158
159	<	reply=sock_comm(fm_fd_r, fm_fd_w, "ENDCONFIG\n");
159	>	reply=sock_comm(fm_fd_r, fm_fd_w, "ENDCONFIG");
160		if(reply== NULL){
161		errf("Server error (%m)");
162		return -1;
163		}
164
165	<	reply=sock_comm(fm_fd_r, fm_fd_w, "FILTER\n");
165	>	reply=sock_comm(fm_fd_r, fm_fd_w, "FILTER");
166		if((reply== NULL) || (strncasecmp(reply, "ERROR", 5)==0)){
167	<	errf("Server error (%m)");
167	>	errf("Server error FILTER failed (%m)");
168		return -1;
169		}
170		reply_ptr=strchr(reply,';');
#	Line 144 | Line 177 | int ihost_configure(ihost_state_t *ihost_state){
177		errf("strdup failed (%m)");
178		return -1;
179		}
180	<	reply=++reply_ptr;
180	>	reply=reply_ptr + 1;
181		reply_ptr=strchr(reply,';');
182		if (reply_ptr==NULL){
183		errf("Incorrect data returned 2");
#	Line 152 | Line 185 | int ihost_configure(ihost_state_t *ihost_state){
185		}
186		*reply_ptr='\0';
187		ihost_state->server_udp_port=atoi(reply);
188	<	reply=++reply_ptr;
188	>	reply=reply_ptr+1;
189		ihost_state->server_tcp_port=atoi(reply);
190		if ((ihost_state->server_tcp_port==0) || (ihost_state->server_udp_port==0)){
191		errf("Incorrect data returned 3 ");
192		return -1;
193		}
194
195	<	reply=sock_comm(fm_fd_r, fm_fd_w, "END\n");
195	>	reply=sock_comm(fm_fd_r, fm_fd_w, "END");
196		if((reply== NULL) || (strncasecmp(reply, "ERROR", 5) ==0 )){
197		errf("Server error (%m)");
198		return -1;
199		}
200
201		if(fclose(fm_fd_r) !=0){
202	<	errf("Failed to close FD (%m)");
202	>	errf("Failed to close read FD (%m)");
203		return -1;
204		}
205		if(fclose(fm_fd_w) !=0){
206	<	errf("Failed to close FD (%m)");
206	>	errf("Failed to close write FD (%m)");
207		return -1;
208		}
209
210		return 0;
211		}
212
213	+	int heartbeat(ihost_state_t *ihost_state){
214	+	struct sockaddr_in addr;
215	+	struct in_addr haddr;
216	+	int sd;
217	+	FILE *fm_fd_r, *fm_fd_w;
218	+	char *reply;
219	+	int exitcode=0;
220	+
221	+	if ((sd = socket(AF_INET, SOCK_STREAM, PF_UNSPEC)) < 0) {
222	+	errf("Can't create AF_INET socket (%m)");
223	+	return -1;
224	+	}
225	+
226	+	if (get_host_addr(ihost_state->server_fqdn, &haddr) != 0){
227	+	errf("Failed to resolve address %s (%m)", ihost_state->fm_host);
228	+	return -1;
229	+	}
230	+
231	+	memset(&addr, 0, sizeof addr);
232	+	addr.sin_family = AF_INET;
233	+	memcpy(&addr.sin_addr, &haddr, sizeof haddr);
234	+	addr.sin_port =  htons(ihost_state->server_tcp_port);
235	+
236	+	if (connect(sd, (struct sockaddr *)&addr, sizeof addr) != 0) {
237	+	errf("Failed to connect to %s on port %d (%m)", ihost_state->fm_host, ihost_state->fm_port);
238	+	return -1;
239	+	}
240	+
241	+	/* Need to open 2 files, one for reading one for writing, as it gets confused if we only use 1 :) */
242	+	if ((fm_fd_r=fdopen(sd,"r")) == NULL){
243	+	errf("Failed to open stream (%m)");
244	+	return -1;
245	+	}
246	+
247	+	if ((fm_fd_w=fdopen(dup(sd),"w")) == NULL){
248	+	errf("Failed to open stream (%m)");
249	+	return -1;
250	+	}
251	+
252	+	reply=sock_comm(fm_fd_r, fm_fd_w, "HEARTBEAT");
253	+	if ((reply==NULL) || (strncasecmp(reply, "ERROR", 5) == 0) ) {
254	+	errf("Server error");
255	+	return -1;
256	+	}
257	+
258	+	reply=sock_comm(fm_fd_r, fm_fd_w, "CONFIG");
259	+	if ((reply==NULL) || (strncasecmp(reply, "ERROR", 5) == 0) ) {
260	+	errf("Server error");
261	+	return -1;
262	+	}
263	+
264	+	reply=sock_comm(fm_fd_r, fm_fd_w, ihost_state->files_list);
265	+	if ((reply==NULL) || (strncasecmp(reply, "OK", 2) != 0) ) {
266	+	errf("Server error");
267	+	return -1;
268	+	}
269	+
270	+	reply=sock_comm(fm_fd_r, fm_fd_w, ihost_state->last_modified);
271	+	if (reply==NULL) {
272	+	errf("Server error");
273	+	return -1;
274	+	}
275	+	if (strncasecmp(reply, "ERROR", 5) == 0){
276	+	/* Means the config has changed */
277	+	exitcode=RECONFIGURE_RETURN_CODE;
278	+	}
279	+	reply=sock_comm(fm_fd_r, fm_fd_w, "KEY");
280	+	if ((reply==NULL) || (strncasecmp(reply, "ERROR", 5) == 0) ) {
281	+	errf("Server error");
282	+	return -1;
283	+	}
284	+	if (ihost_state->key!=NULL) free(ihost_state->key);
285	+
286	+	if((ihost_state->key=strdup(reply)) == NULL){
287	+	errf("strdup failed (%m)");
288	+	return -1;
289	+	}
290	+
291	+	reply=sock_comm(fm_fd_r, fm_fd_w, "ENDHEARTBEAT");
292	+	if((reply== NULL) || (strncasecmp(reply, "ERROR", 5) ==0 )){
293	+	errf("Server error (%m)");
294	+	return -1;
295	+	}
296	+
297	+	fflush(fm_fd_r);
298	+	fflush(fm_fd_w);
299	+
300	+	if(fclose(fm_fd_r) !=0){
301	+	errf("Failed to close read FD (%m)");
302	+	return -1;
303	+	}
304	+	if(fclose(fm_fd_w) !=0){
305	+	errf("Failed to close write FD (%m)");
306	+	return -1;
307	+	}
308	+
309	+	return exitcode;
310	+	}
311	+
312	+	char *stat_grab(ihost_state_t *ihost_state, int counter){
313	+	#define NUM_STATS 9
314	+	char *stats[NUM_STATS];
315	+	char *xml_data=NULL;
316	+	char *xml_data_p;
317	+	int x=0;
318	+
319	+	stats[0]=get_cpu_stats();
320	+	stats[1]=get_disk_stats();
321	+	stats[2]=get_load_stats();
322	+	stats[3]=get_memory_stats();
323	+	stats[4]=get_os_info();
324	+	stats[5]=get_page_stats();
325	+	stats[6]=get_process_stats();
326	+	stats[7]=get_swap_stats();
327	+	stats[8]=get_user_stats();
328	+
329	+	for(;x<NUM_STATS;x++){
330	+	if(stats[x]==NULL){
331	+	return NULL;
332	+	}
333	+	if(xml_data==NULL){
334	+	if((xml_data=strf("%s", stats[x])) == NULL){
335	+	errf("str failed (%m)");
336	+	return NULL;
337	+	}
338	+	}else{
339	+	xml_data_p=xml_data;
340	+	if((xml_data=strf("%s%s", xml_data, stats[x])) == NULL){
341	+	errf("str failed (%m)");
342	+	return NULL;
343	+	}
344	+	free(xml_data_p);
345	+	}
346	+	free(stats[x]);
347	+	}
348	+	xml_data_p=xml_data;
349	+	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);
350	+	free(xml_data_p);
351	+
352	+	return xml_data;
353	+	}
354	+
355	+	int send_stats(ihost_state_t *ihost_state, char *data_stream){
356	+	struct sockaddr_in addr;
357	+	struct in_addr haddr;
358	+
359	+	int sd;
360	+	size_t len;
361	+
362	+	len=strlen(data_stream);
363	+	if(len>UDP_MAX_PACKET_SIZE){
364	+	errf("Too big to send to server. Please reconfigure client and server and recompile");
365	+	exit(1);
366	+	}
367	+
368	+	if (get_host_addr(ihost_state->server_fqdn, &haddr) != 0){
369	+	errf("Failed to resolve address %s (%m)", ihost_state->fm_host);
370	+	return -1;
371	+	}
372	+
373	+	if((sd=socket(PF_INET, SOCK_DGRAM, IPPROTO_UDP)) < 0){
374	+	errf("failed to create UDP socket (%m)");
375	+	return -1;
376	+	}
377	+
378	+	memset(&addr, 0, sizeof(addr));
379	+	addr.sin_family=AF_INET;
380	+	memcpy((char *)&addr.sin_addr, &haddr, sizeof haddr);
381	+	addr.sin_port =  htons(ihost_state->server_udp_port);
382	+
383	+	if((sendto(sd, data_stream, len, 0, (struct sockaddr *) &addr, sizeof(addr))) != len){
384	+	errf("Send the wrong number of bytes (%m)");
385	+	return -1;
386	+	}
387	+
388	+	close(sd);
389	+
390	+	printf("%s\n",data_stream);
391	+	return 0;
392	+	}
393	+
394		int main(int argc, char **argv){
395		ihost_state_t ihost_state;
396	+	int heartbeat_exit;
397	+	int counter=0;
398	+	long udp_time=0, tcp_time=0, stat_grab_time=0, cur_time=0;
399	+	int sleep_delay=0;
400	+	char *xml_stats;
401	+
402	+	/* NULL'ify so i can tell if i need to free it or not */
403	+	ihost_state.fm_host=NULL;
404	+	ihost_state.my_fqdn=NULL;
405	+	ihost_state.server_fqdn=NULL;
406	+	ihost_state.last_modified=NULL;
407	+	ihost_state.files_list=NULL;
408	+	ihost_state.key=NULL;
409	+
410		errf_set_progname(argv[0]);
411		if(argc!=3){
412		errf_usage("<host> <port>");
#	Line 190 | Line 418 | int main(int argc, char **argv){
418
419		if(ihost_configure(&ihost_state)!=0){
420		errf("configure failed");
421	+	/* Ok, ideally we prob should have 2 copies of the structure and carry on if this
422	+	happens.. But we dont :) (at the moment) */
423	+	exit(1);
424		}
425
426	+	for(;;){
427	+	cur_time=time(NULL);
428	+	if(cur_time>=tcp_time){
429	+	/*printf("sending TCP\n");*/
430	+	heartbeat_exit=heartbeat(&ihost_state);
431	+	if(heartbeat_exit==RECONFIGURE_RETURN_CODE){
432	+	/*errf("heartbeat needs to be reconfigured");*/
433	+	ihost_configure(&ihost_state);
434	+	/* So udp doesn't wait til next sending before updating */
435	+	udp_time=0;
436	+	}
437	+	if(heartbeat_exit==-1){
438	+	errf("ah crap");
439	+	exit(1);
440	+	}
441	+	tcp_time=time(NULL)+ihost_state.tcp_update_time;
442	+	}
443	+
444	+	if(cur_time>=udp_time){
445	+	/*printf("sending UDP\n");*/
446	+	stat_grab_time=time(NULL);
447	+	if((xml_stats=stat_grab(&ihost_state, counter++)) == NULL){
448	+	errf("Failed to get stats (%m)");
449	+	exit(1);
450	+	}
451	+	stat_grab_time=time(NULL)-stat_grab_time;
452	+	send_stats(&ihost_state, xml_stats);
453	+	free(xml_stats);
454	+	udp_time=time(NULL)+ihost_state.udp_update_time-stat_grab_time;
455	+	}
456	+
457	+	if(tcp_time<udp_time){
458	+	sleep_delay=tcp_time-time(NULL);
459	+	}else{
460	+	sleep_delay=udp_time-time(NULL);
461	+	}
462	+
463	+	/*printf("tcp epoc: %ld \t udp epoc: %ld\ntime:%ld \tsleeping: %d\n", tcp_time, udp_time, time(NULL), sleep_delay);*/
464	+	if(sleep_delay>0) sleep(sleep_delay);
465	+	}
466		return 0;
467		}
468

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