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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 1.10 by pajs, Fri May 17 13:43:48 2002 UTC

#	Line 4 | Line 4
4		#include <unistd.h>
5		#include <syslog.h>
6		#include <netinet/in.h>
7	<	#include <ukcprog.h>
7	>	#include "ukcprog.h"
8		#include <netdb.h>
9		#include <strings.h>
10	+	#include "statgrab.h"
11
12	+	#define RECONFIGURE_RETURN_CODE 2
13	+	#define UDP_MAX_PACKET_SIZE 8192
14	+
15		typedef struct{
16		int fm_port;
17		char *fm_host;
#	Line 16 | Line 20 | typedef struct{
20		char *server_fqdn;
21		int server_udp_port;
22		int server_tcp_port;
23	<	long last_modified;
23	>	char *last_modified;
24		char *files_list;
25		char *key;
26		int udp_update_time;
#	Line 24 | Line 28 | typedef struct{
28
29		}ihost_state_t;
30
31	<	char* sock_comm(FILE *f_r, FILE *f_w, char* sendString){
31	>	char* sock_comm(FILE *f_r, FILE *f_w, char *sendString){
32		char *reply;
33	<	fprintf(f_w, "%s", sendString);
33	>	fprintf(f_w, "%s\n", sendString);
34		fflush(f_w);
35		reply=fpgetline(f_r);
36		/* Returns pointer to static buffer */
#	Line 41 | Line 45 | int ihost_configure(ihost_state_t *ihost_state){
45		char *reply;
46		char *reply_ptr;
47
48	+	/* Check to see if anything needs to be free'd */
49	+	if (ihost_state->my_fqdn!=NULL) free(ihost_state->my_fqdn);
50	+	if (ihost_state->server_fqdn!=NULL) free(ihost_state->server_fqdn);
51	+	if (ihost_state->last_modified!=NULL) free(ihost_state->last_modified);
52	+	if (ihost_state->files_list!=NULL) free(ihost_state->files_list);
53	+
54		if ((sd = socket(AF_INET, SOCK_STREAM, PF_UNSPEC)) < 0) {
55		errf("Can't create AF_INET socket (%m)");
56		return -1;
#	Line 51 | Line 61 | int ihost_configure(ihost_state_t *ihost_state){
61		return -1;
62		}
63
64	<	memset((char *)&addr, 0, sizeof addr);
64	>	memset(&addr, 0, sizeof addr);
65		addr.sin_family = AF_INET;
66	<	memcpy((char *)&addr.sin_addr, &haddr, sizeof haddr);
66	>	memcpy(&addr.sin_addr, &haddr, sizeof haddr);
67		addr.sin_port =  htons(ihost_state->fm_port);
68
69		if (connect(sd, (struct sockaddr *)&addr, sizeof addr) != 0) {
#	Line 63 | Line 73 | int ihost_configure(ihost_state_t *ihost_state){
73
74		/* Need to open 2 files, one for reading one for writing, as it gets confused if we only use 1 :) */
75		if ((fm_fd_r=fdopen(sd,"r")) == NULL){
76	<	errf("Failed to open stream (%m)");
76	>	errf("Failed to open read stream (%m)");
77		return -1;
78		}
79
80		if ((fm_fd_w=fdopen(dup(sd),"w")) == NULL){
81	<	errf("Failed to open stream (%m)");
81	>	errf("Failed to open write stream (%m)");
82		return -1;
83		}
84
85	<	reply=sock_comm(fm_fd_r, fm_fd_w, "STARTCONFIG\n");
85	>	reply=sock_comm(fm_fd_r, fm_fd_w, "STARTCONFIG");
86		if ((reply==NULL) || (strncasecmp(reply, "OK", 2) != 0) ) {
87		errf("Server error");
88		return -1;
89		}
90
91	<	reply=sock_comm(fm_fd_r, fm_fd_w, "LASTMODIFIED\n");
91	>	reply=sock_comm(fm_fd_r, fm_fd_w, "LASTMODIFIED");
92		if((reply== NULL) || (strncasecmp(reply, "ERROR", 5) ==0)){
93		errf("Server error (%m)");
94		return -1;
95		}
96	<	ihost_state->last_modified=atol(reply);
96	>	if((ihost_state->last_modified=strdup(reply)) == NULL){
97	>	errf("strdup failed (%m)");
98	>	return -1;
99	>	}
100
101	<	reply=sock_comm(fm_fd_r, fm_fd_w, "FILELIST\n");
101	>	reply=sock_comm(fm_fd_r, fm_fd_w, "FILELIST");
102		if((reply== NULL) || (strncasecmp(reply, "ERROR", 5) ==0)){
103		errf("Server error (%m)");
104		return -1;
105		}
106	<	if((ihost_state->files_list=strdup(reply)) == NULL){
107	<	errf("strdup failed (%m)");
108	<	return -1;
109	<	}
106	>	if((ihost_state->files_list=strdup(reply)) == NULL){
107	>	errf("strdup failed (%m)");
108	>	return -1;
109	>	}
110
111	<	reply=sock_comm(fm_fd_r, fm_fd_w, "FQDN\n");
111	>	reply=sock_comm(fm_fd_r, fm_fd_w, "FQDN");
112		if((reply== NULL) || (strncasecmp(reply, "ERROR", 5)==0)){
113		errf("Server error (%m)");
114		return -1;
#	Line 105 | Line 118 | int ihost_configure(ihost_state_t *ihost_state){
118		return -1;
119		}
120
121	<	reply=sock_comm(fm_fd_r, fm_fd_w, "UDPUpdateTime\n");
121	>	reply=sock_comm(fm_fd_r, fm_fd_w, "UDPUpdateTime");
122		if(reply== NULL){
123		errf("Server error (%m)");
124		return -1;
#	Line 114 | Line 127 | int ihost_configure(ihost_state_t *ihost_state){
127		ihost_state->udp_update_time=atoi(reply);
128		}
129
130	<	reply=sock_comm(fm_fd_r, fm_fd_w, "TCPUpdateTime\n");
130	>	reply=sock_comm(fm_fd_r, fm_fd_w, "TCPUpdateTime");
131		if(reply== NULL){
132		errf("Server error (%m)");
133		return -1;
#	Line 123 | Line 136 | int ihost_configure(ihost_state_t *ihost_state){
136		ihost_state->tcp_update_time=atoi(reply);
137		}
138
139	<	reply=sock_comm(fm_fd_r, fm_fd_w, "ENDCONFIG\n");
139	>	reply=sock_comm(fm_fd_r, fm_fd_w, "ENDCONFIG");
140		if(reply== NULL){
141		errf("Server error (%m)");
142		return -1;
143		}
144
145	<	reply=sock_comm(fm_fd_r, fm_fd_w, "FILTER\n");
145	>	reply=sock_comm(fm_fd_r, fm_fd_w, "FILTER");
146		if((reply== NULL) || (strncasecmp(reply, "ERROR", 5)==0)){
147	<	errf("Server error (%m)");
147	>	errf("Server error FILTER failed (%m)");
148		return -1;
149		}
150		reply_ptr=strchr(reply,';');
#	Line 144 | Line 157 | int ihost_configure(ihost_state_t *ihost_state){
157		errf("strdup failed (%m)");
158		return -1;
159		}
160	<	reply=++reply_ptr;
160	>	reply=reply_ptr + 1;
161		reply_ptr=strchr(reply,';');
162		if (reply_ptr==NULL){
163		errf("Incorrect data returned 2");
#	Line 152 | Line 165 | int ihost_configure(ihost_state_t *ihost_state){
165		}
166		*reply_ptr='\0';
167		ihost_state->server_udp_port=atoi(reply);
168	<	reply=++reply_ptr;
168	>	reply=reply_ptr+1;
169		ihost_state->server_tcp_port=atoi(reply);
170		if ((ihost_state->server_tcp_port==0) || (ihost_state->server_udp_port==0)){
171		errf("Incorrect data returned 3 ");
172		return -1;
173		}
174
175	<	reply=sock_comm(fm_fd_r, fm_fd_w, "END\n");
175	>	reply=sock_comm(fm_fd_r, fm_fd_w, "END");
176		if((reply== NULL) || (strncasecmp(reply, "ERROR", 5) ==0 )){
177		errf("Server error (%m)");
178		return -1;
179		}
180
181		if(fclose(fm_fd_r) !=0){
182	<	errf("Failed to close FD (%m)");
182	>	errf("Failed to close read FD (%m)");
183		return -1;
184		}
185		if(fclose(fm_fd_w) !=0){
186	<	errf("Failed to close FD (%m)");
186	>	errf("Failed to close write FD (%m)");
187		return -1;
188		}
189
190		return 0;
191	+	}
192
193	+	int heartbeat(ihost_state_t *ihost_state){
194	+	struct sockaddr_in addr;
195	+	struct in_addr haddr;
196	+	int sd;
197	+	FILE *fm_fd_r, *fm_fd_w;
198	+	char *reply;
199	+	int exitcode=0;
200	+
201	+	if ((sd = socket(AF_INET, SOCK_STREAM, PF_UNSPEC)) < 0) {
202	+	errf("Can't create AF_INET socket (%m)");
203	+	return -1;
204	+	}
205	+
206	+	if (get_host_addr(ihost_state->server_fqdn, &haddr) != 0){
207	+	errf("Failed to resolve address %s (%m)", ihost_state->fm_host);
208	+	return -1;
209	+	}
210	+
211	+	memset(&addr, 0, sizeof addr);
212	+	addr.sin_family = AF_INET;
213	+	memcpy(&addr.sin_addr, &haddr, sizeof haddr);
214	+	addr.sin_port =  htons(ihost_state->server_tcp_port);
215	+
216	+	if (connect(sd, (struct sockaddr *)&addr, sizeof addr) != 0) {
217	+	errf("Failed to connect to %s on port %d (%m)", ihost_state->fm_host, ihost_state->fm_port);
218	+	return -1;
219	+	}
220	+
221	+	/* Need to open 2 files, one for reading one for writing, as it gets confused if we only use 1 :) */
222	+	if ((fm_fd_r=fdopen(sd,"r")) == NULL){
223	+	errf("Failed to open stream (%m)");
224	+	return -1;
225	+	}
226	+
227	+	if ((fm_fd_w=fdopen(dup(sd),"w")) == NULL){
228	+	errf("Failed to open stream (%m)");
229	+	return -1;
230	+	}
231	+
232	+	reply=sock_comm(fm_fd_r, fm_fd_w, "HEARTBEAT");
233	+	if ((reply==NULL) || (strncasecmp(reply, "ERROR", 5) == 0) ) {
234	+	errf("Server error");
235	+	return -1;
236	+	}
237	+
238	+	reply=sock_comm(fm_fd_r, fm_fd_w, "CONFIG");
239	+	if ((reply==NULL) || (strncasecmp(reply, "ERROR", 5) == 0) ) {
240	+	errf("Server error");
241	+	return -1;
242	+	}
243	+
244	+	reply=sock_comm(fm_fd_r, fm_fd_w, ihost_state->files_list);
245	+	if ((reply==NULL) || (strncasecmp(reply, "OK", 2) != 0) ) {
246	+	errf("Server error");
247	+	return -1;
248	+	}
249	+
250	+	reply=sock_comm(fm_fd_r, fm_fd_w, ihost_state->last_modified);
251	+	if (reply==NULL) {
252	+	errf("Server error");
253	+	return -1;
254	+	}
255	+	if (strncasecmp(reply, "ERROR", 5) == 0){
256	+	/* Means the config has changed */
257	+	exitcode=RECONFIGURE_RETURN_CODE;
258	+	}
259	+	reply=sock_comm(fm_fd_r, fm_fd_w, "KEY");
260	+	if ((reply==NULL) || (strncasecmp(reply, "ERROR", 5) == 0) ) {
261	+	errf("Server error");
262	+	return -1;
263	+	}
264	+	if (ihost_state->key!=NULL) free(ihost_state->key);
265	+
266	+	if((ihost_state->key=strdup(reply)) == NULL){
267	+	errf("strdup failed (%m)");
268	+	return -1;
269	+	}
270	+
271	+	reply=sock_comm(fm_fd_r, fm_fd_w, "ENDHEARTBEAT");
272	+	if((reply== NULL) || (strncasecmp(reply, "ERROR", 5) ==0 )){
273	+	errf("Server error (%m)");
274	+	return -1;
275	+	}
276	+
277	+	fflush(fm_fd_r);
278	+	fflush(fm_fd_w);
279	+
280	+	if(fclose(fm_fd_r) !=0){
281	+	errf("Failed to close read FD (%m)");
282	+	return -1;
283	+	}
284	+	if(fclose(fm_fd_w) !=0){
285	+	errf("Failed to close write FD (%m)");
286	+	return -1;
287	+	}
288	+
289	+	return exitcode;
290		}
291
292	<	int main(){
292	>	char *stat_grab(ihost_state_t *ihost_state, int counter){
293	>	#define NUM_STATS 9
294	>	char *stats[NUM_STATS];
295	>	char *xml_data=NULL;
296	>	char *xml_data_p;
297	>	int x=0;
298	>
299	>	stats[0]=get_cpu_stats();
300	>	stats[1]=get_disk_stats();
301	>	stats[2]=get_load_stats();
302	>	stats[3]=get_memory_stats();
303	>	stats[4]=get_os_info();
304	>	stats[5]=get_page_stats();
305	>	stats[6]=get_process_stats();
306	>	stats[7]=get_swap_stats();
307	>	stats[8]=get_user_stats();
308	>
309	>	for(;x<NUM_STATS;x++){
310	>	if(stats[x]==NULL){
311	>	return NULL;
312	>	}
313	>	if(xml_data==NULL){
314	>	if((xml_data=strf("%s", stats[x])) == NULL){
315	>	errf("str failed (%m)");
316	>	return NULL;
317	>	}
318	>	}else{
319	>	xml_data_p=xml_data;
320	>	if((xml_data=strf("%s%s", xml_data, stats[x])) == NULL){
321	>	errf("str failed (%m)");
322	>	return NULL;
323	>	}
324	>	free(xml_data_p);
325	>	}
326	>	free(stats[x]);
327	>	}
328	>	xml_data_p=xml_data;
329	>	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);
330	>	free(xml_data_p);
331	>
332	>	return xml_data;
333	>	}
334	>
335	>	int send_stats(ihost_state_t *ihost_state, char *data_stream){
336	>	struct sockaddr_in addr;
337	>	struct in_addr haddr;
338	>
339	>	int sd;
340	>	size_t len;
341	>
342	>	len=strlen(data_stream);
343	>	if(len>UDP_MAX_PACKET_SIZE){
344	>	errf("Too big to send to server. Please reconfigure client and server and recompile");
345	>	exit(1);
346	>	}
347	>
348	>	if (get_host_addr(ihost_state->server_fqdn, &haddr) != 0){
349	>	errf("Failed to resolve address %s (%m)", ihost_state->fm_host);
350	>	return -1;
351	>	}
352	>
353	>	if((sd=socket(PF_INET, SOCK_DGRAM, IPPROTO_UDP)) < 0){
354	>	errf("failed to create UDP socket (%m)");
355	>	return -1;
356	>	}
357	>
358	>	memset(&addr, 0, sizeof(addr));
359	>	addr.sin_family=AF_INET;
360	>	memcpy((char *)&addr.sin_addr, &haddr, sizeof haddr);
361	>	addr.sin_port =  htons(ihost_state->server_udp_port);
362	>
363	>	if((sendto(sd, data_stream, len, 0, (struct sockaddr *) &addr, sizeof(addr))) != len){
364	>	errf("Send the wrong number of bytes (%m)");
365	>	return -1;
366	>	}
367	>
368	>	close(sd);
369	>
370	>	return 0;
371	>	}
372	>
373	>	int main(int argc, char **argv){
374		ihost_state_t ihost_state;
375	+	int heartbeat_exit;
376	+	int counter=0;
377	+	long udp_time=0, tcp_time=0, stat_grab_time=0, cur_time=0;
378	+	int sleep_delay=0;
379	+	char *xml_stats;
380
381	<	ihost_state.fm_host=strdup("kernow.ukc.ac.uk");
382	<	ihost_state.fm_port=4567;
381	>	/* NULL'ify so i can tell if i need to free it or not */
382	>	ihost_state.fm_host=NULL;
383	>	ihost_state.my_fqdn=NULL;
384	>	ihost_state.server_fqdn=NULL;
385	>	ihost_state.last_modified=NULL;
386	>	ihost_state.files_list=NULL;
387	>	ihost_state.key=NULL;
388
389	+	errf_set_progname(argv[0]);
390	+	if(argc!=3){
391	+	errf_usage("<host> <port>");
392	+	exit(1);
393	+	}
394	+
395	+	ihost_state.fm_host=argv[1];
396	+	ihost_state.fm_port=atoi(argv[2]);
397	+
398		if(ihost_configure(&ihost_state)!=0){
399		errf("configure failed");
400	+	/* Ok, ideally we prob should have 2 copies of the structure and carry on if this
401	+	happens.. But we dont :) (at the moment) */
402	+	exit(1);
403		}
404
405	+	for(;;){
406	+	cur_time=time(NULL);
407	+	if(cur_time>=tcp_time){
408	+	/*printf("sending TCP\n");*/
409	+	heartbeat_exit=heartbeat(&ihost_state);
410	+	if(heartbeat_exit==RECONFIGURE_RETURN_CODE){
411	+	/*errf("heartbeat needs to be reconfigured");*/
412	+	ihost_configure(&ihost_state);
413	+	/* So udp doesn't wait til next sending before updating */
414	+	udp_time=0;
415	+	}
416	+	if(heartbeat_exit==-1){
417	+	errf("ah crap");
418	+	exit(1);
419	+	}
420	+	tcp_time=time(NULL)+ihost_state.tcp_update_time;
421	+	}
422	+
423	+	if(cur_time>=udp_time){
424	+	/*printf("sending UDP\n");*/
425	+	stat_grab_time=time(NULL);
426	+	if((xml_stats=stat_grab(&ihost_state, counter)) == NULL){
427	+	errf("Failed to get stats (%m)");
428	+	exit(1);
429	+	}
430	+	stat_grab_time=time(NULL)-stat_grab_time;
431	+	send_stats(&ihost_state, xml_stats);
432	+	free(xml_stats);
433	+	udp_time=time(NULL)+ihost_state.udp_update_time-stat_grab_time;
434	+	}
435	+
436	+	if(tcp_time<udp_time){
437	+	sleep_delay=tcp_time-time(NULL);
438	+	}else{
439	+	sleep_delay=udp_time-time(NULL);
440	+	}
441	+
442	+	/*printf("tcp epoc: %ld \t udp epoc: %ld\ntime:%ld \tsleeping: %d\n", tcp_time, udp_time, time(NULL), sleep_delay);*/
443	+	if(sleep_delay>0) sleep(sleep_delay);
444	+	}
445		return 0;
446		}
447

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