# | 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> |
28 | > | #include <string.h> |
29 | > | #include "statgrab.h" |
30 | > | #include <time.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 | < | int main(){ |
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 | > | return 0; |
391 | > | } |
392 | > | |
393 | > | int main(int argc, char **argv){ |
394 | ihost_state_t ihost_state; | |
395 | + | int heartbeat_exit; |
396 | + | int counter=0; |
397 | + | long udp_time=0, tcp_time=0, stat_grab_time=0, cur_time=0; |
398 | + | int sleep_delay=0; |
399 | + | char *xml_stats; |
400 | ||
401 | < | ihost_state.fm_host=strdup("kernow.ukc.ac.uk"); |
402 | < | ihost_state.fm_port=4567; |
401 | > | /* NULL'ify so i can tell if i need to free it or not */ |
402 | > | ihost_state.fm_host=NULL; |
403 | > | ihost_state.my_fqdn=NULL; |
404 | > | ihost_state.server_fqdn=NULL; |
405 | > | ihost_state.last_modified=NULL; |
406 | > | ihost_state.files_list=NULL; |
407 | > | ihost_state.key=NULL; |
408 | ||
409 | + | errf_set_progname(argv[0]); |
410 | + | if(argc!=3){ |
411 | + | errf_usage("<host> <port>"); |
412 | + | exit(1); |
413 | + | } |
414 | + | |
415 | + | ihost_state.fm_host=argv[1]; |
416 | + | ihost_state.fm_port=atoi(argv[2]); |
417 | + | |
418 | if(ihost_configure(&ihost_state)!=0){ | |
419 | errf("configure failed"); | |
420 | + | /* Ok, ideally we prob should have 2 copies of the structure and carry on if this |
421 | + | happens.. But we dont :) (at the moment) */ |
422 | + | exit(1); |
423 | } | |
424 | ||
425 | + | for(;;){ |
426 | + | cur_time=time(NULL); |
427 | + | if(cur_time>=tcp_time){ |
428 | + | /*printf("sending TCP\n");*/ |
429 | + | heartbeat_exit=heartbeat(&ihost_state); |
430 | + | if(heartbeat_exit==RECONFIGURE_RETURN_CODE){ |
431 | + | /*errf("heartbeat needs to be reconfigured");*/ |
432 | + | ihost_configure(&ihost_state); |
433 | + | /* So udp doesn't wait til next sending before updating */ |
434 | + | udp_time=0; |
435 | + | } |
436 | + | if(heartbeat_exit==-1){ |
437 | + | errf("ah crap"); |
438 | + | exit(1); |
439 | + | } |
440 | + | tcp_time=time(NULL)+ihost_state.tcp_update_time; |
441 | + | } |
442 | + | |
443 | + | if(cur_time>=udp_time){ |
444 | + | /*printf("sending UDP\n");*/ |
445 | + | stat_grab_time=time(NULL); |
446 | + | if((xml_stats=stat_grab(&ihost_state, counter)) == NULL){ |
447 | + | errf("Failed to get stats (%m)"); |
448 | + | exit(1); |
449 | + | } |
450 | + | stat_grab_time=time(NULL)-stat_grab_time; |
451 | + | send_stats(&ihost_state, xml_stats); |
452 | + | free(xml_stats); |
453 | + | udp_time=time(NULL)+ihost_state.udp_update_time-stat_grab_time; |
454 | + | } |
455 | + | |
456 | + | if(tcp_time<udp_time){ |
457 | + | sleep_delay=tcp_time-time(NULL); |
458 | + | }else{ |
459 | + | sleep_delay=udp_time-time(NULL); |
460 | + | } |
461 | + | |
462 | + | /*printf("tcp epoc: %ld \t udp epoc: %ld\ntime:%ld \tsleeping: %d\n", tcp_time, udp_time, time(NULL), sleep_delay);*/ |
463 | + | if(sleep_delay>0) sleep(sleep_delay); |
464 | + | } |
465 | return 0; | |
466 | } | |
467 |
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