| 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 <stdlib.h> |
| 22 |
#include <unistd.h> |
| 23 |
#include <syslog.h> |
| 24 |
#include <netinet/in.h> |
| 25 |
#include "ukcprog.h" |
| 26 |
#include <netdb.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; |
| 38 |
|
| 39 |
char *my_fqdn; |
| 40 |
char *server_fqdn; |
| 41 |
int server_udp_port; |
| 42 |
int server_tcp_port; |
| 43 |
char *last_modified; |
| 44 |
char *files_list; |
| 45 |
char *key; |
| 46 |
int udp_update_time; |
| 47 |
int tcp_update_time; |
| 48 |
|
| 49 |
}ihost_state_t; |
| 50 |
|
| 51 |
char* sock_comm(FILE *f_r, FILE *f_w, char *sendString){ |
| 52 |
char *reply; |
| 53 |
fprintf(f_w, "%s\n", sendString); |
| 54 |
fflush(f_w); |
| 55 |
reply=fpgetline(f_r); |
| 56 |
/* Returns pointer to static buffer */ |
| 57 |
return reply; |
| 58 |
} |
| 59 |
|
| 60 |
int ihost_configure(ihost_state_t *ihost_state){ |
| 61 |
struct sockaddr_in addr; |
| 62 |
struct in_addr haddr; |
| 63 |
int sd; |
| 64 |
FILE *fm_fd_r, *fm_fd_w; |
| 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; |
| 77 |
} |
| 78 |
|
| 79 |
if (get_host_addr(ihost_state->fm_host, &haddr) != 0){ |
| 80 |
errf("Failed to resolve address %s (%m)", ihost_state->fm_host); |
| 81 |
return -1; |
| 82 |
} |
| 83 |
|
| 84 |
memset(&addr, 0, sizeof addr); |
| 85 |
addr.sin_family = AF_INET; |
| 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) { |
| 90 |
errf("Failed to connect to %s on port %d (%m)", ihost_state->fm_host, ihost_state->fm_port); |
| 91 |
return -1; |
| 92 |
} |
| 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 read stream (%m)"); |
| 97 |
return -1; |
| 98 |
} |
| 99 |
|
| 100 |
if ((fm_fd_w=fdopen(dup(sd),"w")) == NULL){ |
| 101 |
errf("Failed to open write stream (%m)"); |
| 102 |
return -1; |
| 103 |
} |
| 104 |
|
| 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"); |
| 112 |
if((reply== NULL) || (strncasecmp(reply, "ERROR", 5) ==0)){ |
| 113 |
errf("Server error (%m)"); |
| 114 |
return -1; |
| 115 |
} |
| 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"); |
| 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 |
} |
| 130 |
|
| 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; |
| 135 |
} |
| 136 |
if((ihost_state->my_fqdn=strdup(reply)) == NULL){ |
| 137 |
errf("strdup failed (%m)"); |
| 138 |
return -1; |
| 139 |
} |
| 140 |
|
| 141 |
reply=sock_comm(fm_fd_r, fm_fd_w, "UDPUpdateTime"); |
| 142 |
if(reply== NULL){ |
| 143 |
errf("Server error (%m)"); |
| 144 |
return -1; |
| 145 |
} |
| 146 |
if (strncasecmp(reply, "ERROR", 5) != 0){ |
| 147 |
ihost_state->udp_update_time=atoi(reply); |
| 148 |
} |
| 149 |
|
| 150 |
reply=sock_comm(fm_fd_r, fm_fd_w, "TCPUpdateTime"); |
| 151 |
if(reply== NULL){ |
| 152 |
errf("Server error (%m)"); |
| 153 |
return -1; |
| 154 |
} |
| 155 |
if (strncasecmp(reply, "ERROR", 5) != 0){ |
| 156 |
ihost_state->tcp_update_time=atoi(reply); |
| 157 |
} |
| 158 |
|
| 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"); |
| 166 |
if((reply== NULL) || (strncasecmp(reply, "ERROR", 5)==0)){ |
| 167 |
errf("Server error FILTER failed (%m)"); |
| 168 |
return -1; |
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} |
| 170 |
reply_ptr=strchr(reply,';'); |
| 171 |
if (reply_ptr==NULL){ |
| 172 |
errf("Incorrect data returned"); |
| 173 |
return -1; |
| 174 |
} |
| 175 |
*reply_ptr='\0'; |
| 176 |
if((ihost_state->server_fqdn=strdup(reply)) == NULL){ |
| 177 |
errf("strdup failed (%m)"); |
| 178 |
return -1; |
| 179 |
} |
| 180 |
reply=reply_ptr + 1; |
| 181 |
reply_ptr=strchr(reply,';'); |
| 182 |
if (reply_ptr==NULL){ |
| 183 |
errf("Incorrect data returned 2"); |
| 184 |
return -1; |
| 185 |
} |
| 186 |
*reply_ptr='\0'; |
| 187 |
ihost_state->server_udp_port=atoi(reply); |
| 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"); |
| 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 read FD (%m)"); |
| 203 |
return -1; |
| 204 |
} |
| 205 |
if(fclose(fm_fd_w) !=0){ |
| 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 |
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 |
/* 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 |
|
