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root/i-scream/projects/cms/source/ihost/ihost.c
Revision: 1.32
Committed: Thu Mar 6 12:01:33 2003 UTC (21 years, 2 months ago) by pajs
Content type: text/plain
Branch: MAIN
Changes since 1.31: +1 -1 lines
Log Message:
Minor bug fix which made it think that successful config checks failed :)

File Contents

# User Rev Content
1 tdb 1.11 /*
2     * i-scream central monitoring system
3 tdb 1.23 * http://www.i-scream.org.uk
4 tdb 1.11 * Copyright (C) 2000-2002 i-scream
5     *
6     * This program is free software; you can redistribute it and/or
7     * modify it under the terms of the GNU General Public License
8     * as published by the Free Software Foundation; either version 2
9     * of the License, or (at your option) any later version.
10     *
11     * This program is distributed in the hope that it will be useful,
12     * but WITHOUT ANY WARRANTY; without even the implied warranty of
13     * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14     * GNU General Public License for more details.
15     *
16     * You should have received a copy of the GNU General Public License
17     * along with this program; if not, write to the Free Software
18     * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
19     */
20    
21 tdb 1.26 #ifdef HAVE_CONFIG_H
22     #include "config.h"
23     #endif
24    
25 pajs 1.1 #include <stdio.h>
26     #include <stdlib.h>
27 pajs 1.28 #include <unistd.h>
28     #include <string.h>
29 pajs 1.18 #include <sys/types.h>
30 pajs 1.28 #include <sys/socket.h>
31     #include <stdarg.h>
32     #include <errno.h>
33 pajs 1.1 #include <netdb.h>
34 pajs 1.28
35 tdb 1.29 #include "ukcprog.h"
36 pajs 1.9 #include "statgrab.h"
37 pajs 1.1
38 pajs 1.28 #define LOG_CRIT 0
39     #define LOG_ERR 1
40     #define LOG_INFO 2
41     #define LOG_DEBUG 3
42    
43 pajs 1.1 typedef struct{
44 pajs 1.28 int filtermanager_port;
45     char *filtermanager_host;
46    
47     char *host_ip;
48     char *host_fqdn;
49 pajs 1.16
50 pajs 1.1 char *server_fqdn;
51     int server_udp_port;
52 pajs 1.28
53     /* Weird stuff iscream wants sent to it */
54 pajs 1.4 char *last_modified;
55 pajs 1.28 char *file_list;
56    
57 pajs 1.1 int udp_update_time;
58 pajs 1.28 // int config_ttl;
59    
60     time_t config_ttl;
61 pajs 1.1
62     }ihost_state_t;
63    
64 pajs 1.28 typedef struct{
65     int verbose;
66     int daemon;
67    
68     FILE *log;
69     }ihost_config_t;
70    
71     typedef struct{
72     struct sockaddr_in addr;
73     int sock;
74     }udp_sockinfo_t;
75    
76     ihost_config_t ihost_config;
77    
78     void log_msg(int level, char *format, ...){
79     extern int errno;
80     int cur_errno;
81     va_list ap;
82    
83     cur_errno=errno;
84    
85     if(level<=ihost_config.verbose){
86     va_start(ap, format);
87     vfprintf(ihost_config.log, format, ap);
88     va_end(ap);
89     if(level==LOG_CRIT){
90     fprintf(ihost_config.log, " (%s)\n", strerror(cur_errno));
91 pajs 1.18 }else{
92 pajs 1.28 fprintf(ihost_config.log, "\n");
93 pajs 1.18 }
94 pajs 1.28 }
95 pajs 1.18 }
96    
97 pajs 1.28 /* Takes many pointers, checks if they are NULL or not, and then free's them */
98     /* Deprciated - and i only wrote it today! :)
99     void m_free(int num_pointers, ...){
100     int x=0;
101     va_list ap;
102     void *p;
103 pajs 1.1
104 pajs 1.28 va_start(ap, num_pointers);
105     for(;x<num_pointers;x++){
106     p=va_arg(ap, void*);
107     if(p!=NULL){
108     free(p);
109     }
110     }
111     va_end(ap);
112     }
113     */
114    
115     int create_udp_sockinfo(udp_sockinfo_t *udp_sockinfo, char *hostname, int port){
116    
117     struct in_addr haddr;
118    
119     log_msg(LOG_DEBUG, "Resolving name for udp connection");
120     if(get_host_addr(hostname, &haddr) != 0){
121     log_msg(LOG_CRIT, "Failed to lookup name");
122     return 1;
123     }
124 pajs 1.1
125 pajs 1.28 if((udp_sockinfo->sock=socket(PF_INET, SOCK_DGRAM, IPPROTO_UDP)) < 0){
126     log_msg(LOG_CRIT, "Failed to create UDP socket");
127     return 1;
128 pajs 1.1 }
129    
130 pajs 1.28 memset(&(udp_sockinfo->addr), 0, sizeof(struct sockaddr_in));
131     udp_sockinfo->addr.sin_family=AF_INET;
132     memcpy((char *)&(udp_sockinfo->addr.sin_addr), &haddr, sizeof(haddr));
133     udp_sockinfo->addr.sin_port = htons(port);
134 pajs 1.1
135 pajs 1.28 log_msg(LOG_DEBUG, "Socket created");
136     return 0;
137     }
138    
139     FILE *create_tcp_connection(char *hostname, int port){
140     int sock;
141     struct sockaddr_in addr;
142     struct in_addr haddr;
143     FILE *f;
144    
145     log_msg(LOG_DEBUG, "Creating tcp socket");
146     if((sock = socket(PF_INET, SOCK_STREAM, IPPROTO_TCP))<0){
147     log_msg(LOG_CRIT, "Failed to make TCP Socket");
148     return NULL;
149 pajs 1.1 }
150    
151 pajs 1.28 if((get_host_addr(hostname, &haddr))!=0){
152     log_msg(LOG_CRIT, "Failed to lookup name for %s", hostname);
153     return NULL;
154 pajs 1.2 }
155    
156 pajs 1.28 memset(&addr, 0, sizeof(addr));
157     addr.sin_family = AF_INET;
158     memcpy(&addr.sin_addr, &haddr, sizeof(haddr));
159     addr.sin_port = htons(port);
160    
161     log_msg(LOG_DEBUG, "Creating a tcp connection");
162     if(connect(sock, (struct sockaddr *)&addr, sizeof(addr)) !=0){
163     log_msg(LOG_CRIT, "Failed to connect to hostname %s on port %d", hostname, port);
164     return NULL;
165 pajs 1.1 }
166 pajs 1.28
167     if((f=fdopen(sock, "r+"))==NULL){
168     log_msg(LOG_CRIT, "Failed to connect to open filedescriptor on tcp connection");
169     close(sock);
170     return NULL;
171 pajs 1.16 }
172 pajs 1.28
173     return f;
174     }
175    
176     int tcp_comm(FILE *f, char *send, char **response, char *expected){
177    
178     log_msg(LOG_DEBUG, "Sending %s", send);
179     fprintf(f, "%s\n", send);
180     fflush(f);
181     *response=fpgetline(f);
182     fseek(f, 0, SEEK_CUR);
183    
184     if(*response!=NULL) log_msg(LOG_DEBUG, "Recieved %s", *response);
185    
186     if( (*response==NULL) || (strcmp(*response, "ERROR")==0) ) return -1;
187    
188     if(expected==NULL) return 0;
189    
190     if((strcmp(expected, *response))==0) return 0;
191    
192     log_msg(LOG_DEBUG, "Did not get expected response");
193     return -1;
194     }
195    
196     int tcp_comm_strdup(FILE *f, char *send, char **response, char *expected){
197     if((tcp_comm(f, send, response, expected))!=0){
198 pajs 1.16 return -1;
199     }
200 pajs 1.25
201 pajs 1.28 *response=strdup(*response);
202     if (response==NULL) return -1;
203    
204     return 0;
205     }
206    
207     int ihost_getconfig(ihost_state_t *ihost_state){
208    
209     FILE *tcp_con;
210     char *response;
211     char *response_ptr;
212    
213     /* Keep these in case of a failure and so it can keep running on the old config */
214     char *file_list=NULL;
215     char *last_modified=NULL;
216     char *host_fqdn=NULL;
217     char *host_ip=NULL;
218     int udp_update_time=0;
219     char *server_fqdn=NULL;
220     int server_udp_port=0;
221     time_t config_ttl=0;
222    
223 pajs 1.30 if((tcp_con=create_tcp_connection(ihost_state->filtermanager_host, ihost_state->filtermanager_port))==NULL){
224     goto error;
225     }
226 pajs 1.28
227     if(ihost_state->file_list!=NULL || ihost_state->last_modified!=NULL){
228     if(tcp_con==NULL){
229     goto error;
230     }
231    
232     if((tcp_comm(tcp_con, "CHECKCONFIG", &response, "OK"))!=0){
233     goto error;
234     }
235    
236     if((tcp_comm(tcp_con, ihost_state->file_list, &response, "OK"))!=0){
237     goto error;
238     }
239 pajs 1.18
240 pajs 1.28 if((tcp_comm(tcp_con, ihost_state->last_modified, &response, "OK"))==0){
241 pajs 1.32 if((tcp_comm(tcp_con, "END", &response, "OK"))!=0){
242 pajs 1.28 goto error;
243     }
244     fclose(tcp_con);
245     return 0;
246     }else{
247     if((strcmp(response, "EXPIRED"))!=0){
248     goto error;
249     }
250     }
251 pajs 1.1 }
252    
253 pajs 1.28 /* If we got to here, the config must of expired */
254 pajs 1.18
255 pajs 1.28 if((tcp_comm(tcp_con, "STARTCONFIG", &response, "OK"))!=0){
256     goto error;
257 pajs 1.1 }
258    
259 pajs 1.28 if((tcp_comm_strdup(tcp_con, "LASTMODIFIED", &response, NULL))!=0){
260     goto error;
261 pajs 1.1 }
262 pajs 1.28 last_modified=response;
263    
264     if((tcp_comm_strdup(tcp_con, "FILELIST", &response, NULL))!=0){
265     goto error;
266 pajs 1.1 }
267 pajs 1.28 file_list=response;
268 pajs 1.1
269 pajs 1.28 if((tcp_comm_strdup(tcp_con, "FQDN", &response, NULL))!=0){
270     goto error;
271 pajs 1.1 }
272 pajs 1.28 host_fqdn=response;
273    
274     if((tcp_comm_strdup(tcp_con, "IP", &response, NULL))!=0){
275     goto error;
276 pajs 1.1 }
277 pajs 1.28 host_ip=response;
278    
279     if((tcp_comm(tcp_con, "UDPUpdateTime", &response, NULL))!=0){
280     goto error;
281 pajs 1.1 }
282 pajs 1.28 udp_update_time=atoi(response);
283    
284     if((tcp_comm(tcp_con, "ConfigTTL", &response, NULL))!=0){
285     goto error;
286 pajs 1.1 }
287 pajs 1.28 config_ttl=atoi(response);
288 pajs 1.1
289 pajs 1.28 if((tcp_comm(tcp_con, "ENDCONFIG", &response, NULL))!=0){
290     goto error;
291 pajs 1.1 }
292    
293 pajs 1.28 if((tcp_comm(tcp_con, "FILTER", &response, NULL))!=0){
294     goto error;
295     }else{
296     response_ptr=strchr(response,';');
297     if(response_ptr==NULL){
298     log_msg(LOG_ERR, "Incorrect data sent by server");
299     goto error;
300     }
301     *response_ptr='\0';
302     server_fqdn=strdup(response);
303     if(server_fqdn==NULL){
304     goto error;
305     }
306     response_ptr++;
307     if(response_ptr==NULL){
308     log_msg(LOG_ERR, "Incorrect data sent by server");
309     goto error;
310     }
311    
312     printf("string : %s\n", response_ptr);
313     server_udp_port=atoi(response_ptr);
314    
315     if (server_udp_port==0){
316     log_msg(LOG_ERR, "Incorrect data sent by server");
317     goto error;
318     }
319 pajs 1.2 }
320 pajs 1.28
321     if((tcp_comm(tcp_con, "END", &response, "OK"))!=0){
322     goto error;
323 pajs 1.2 }
324 pajs 1.28
325     fclose(tcp_con);
326    
327     /* We have the data we need, and its all been read correctly */
328    
329     /* Free the old data before pointing them to the new data. m_free copes should
330     * this already be NULL */
331     if(ihost_state->file_list!=NULL) free(ihost_state->file_list);
332     if(ihost_state->last_modified!=NULL) free(ihost_state->last_modified);
333     if(ihost_state->host_fqdn!=NULL) free(ihost_state->host_fqdn);
334     if(ihost_state->server_fqdn!=NULL) free(ihost_state->server_fqdn);
335     if(ihost_state->host_ip!=NULL) free(ihost_state->host_ip);
336    
337     ihost_state->file_list=file_list;
338     ihost_state->last_modified=last_modified;
339     ihost_state->host_fqdn=host_fqdn;
340     ihost_state->host_ip=host_ip;
341     ihost_state->server_fqdn=server_fqdn;
342     ihost_state->server_udp_port=server_udp_port;
343     ihost_state->udp_update_time=udp_update_time;
344     ihost_state->config_ttl=config_ttl;
345    
346     log_msg(LOG_DEBUG, "UDP Update time %d", udp_update_time);
347     log_msg(LOG_DEBUG, "Configure ttl %d", config_ttl);
348    
349     return 0;
350    
351     error:
352    
353     if(file_list!=NULL) free(file_list);
354     if(last_modified!=NULL) free(last_modified);
355     if(host_fqdn!=NULL) free(host_fqdn);
356     if(server_fqdn!=NULL) free(server_fqdn);
357     if(host_ip!=NULL) free(host_ip);
358     fclose(tcp_con);
359    
360     return -1;
361     }
362    
363     int get_system_stats(int seq_no, ihost_state_t *ihost_state, char *xml, int size){
364     char tmp[size];
365     cpu_percent_t *cpu_percent;
366     mem_stat_t *mem_stats;
367     load_stat_t *load_stats;
368     user_stat_t *user_stats;
369     swap_stat_t *swap_stats;
370     general_stat_t *general_stats;
371     disk_stat_t *disk_stats;
372     diskio_stat_t *diskio_stats;
373     process_stat_t *process_stats;
374     network_stat_t *network_stats;
375     page_stat_t *page_stats;
376     int disk_entries=0;
377     int diskio_entries=0;
378     int network_entries=0;
379    
380     int counter;
381     long long x;
382     long long y;
383    
384     /* Print start of the packet we want */
385     snprintf(xml, size, "<packet seq_no=\"%d\" machine_name=\"%s\" date=\"%ld\" type=\"data\" ip=\"%s\">", \
386     seq_no, ihost_state->host_fqdn, time(NULL), ihost_state->host_ip);
387    
388     /* Get cpu stats, check it is correct, then fill in its entry for the xml */
389     if((cpu_percent=cpu_percent_usage())==NULL){
390     log_msg(LOG_CRIT, "Failed to get cpu statistics");
391     }else{
392     snprintf(tmp, size, \
393     "<cpu><user>%3.2f</user><kernel>%3.2f</kernel><idle>%3.2f</idle><iowait>%3.2f</iowait><swap>%3.2f</swap></cpu>", \
394     cpu_percent->user, \
395     cpu_percent->kernel, \
396     cpu_percent->idle, \
397     cpu_percent->iowait, \
398     cpu_percent->swap);
399    
400     if(strlcat(xml, tmp, size) >= size) goto too_big_error;
401 pajs 1.2 }
402 pajs 1.28
403    
404     /*Get mem stats, and fill in xml */
405     if((mem_stats=get_memory_stats())==NULL){
406     log_msg(LOG_CRIT, "Failed to get memory statistics");
407     }else{
408     snprintf(tmp, size, \
409     "<memory><total>%lld</total><free>%lld</free><used>%lld</used><cache>%lld</cache></memory>", \
410     mem_stats->total, \
411     mem_stats->free, \
412     mem_stats->used, \
413     mem_stats->cache);
414    
415     if(strlcat(xml, tmp, size) >= size) goto too_big_error;
416 pajs 1.2 }
417 pajs 1.28
418    
419     /* Get load stats */
420     if((load_stats=get_load_stats())==NULL){
421     log_msg(LOG_CRIT, "Failed to get load statistics");
422     }else{
423     snprintf(tmp, size, \
424     "<load><load1>%.2lf</load1><load5>%.2lf</load5><load15>%.2lf</load15></load>", \
425     load_stats->min1, \
426     load_stats->min5, \
427     load_stats->min15);
428     if(strlcat(xml, tmp, size) >= size) goto too_big_error;
429 pajs 1.2 }
430    
431 pajs 1.28
432     /* get user stats */
433    
434     if((user_stats=get_user_stats())==NULL){
435     log_msg(LOG_CRIT, "Failed to get user statistics");
436     }else{
437    
438     snprintf(tmp, size, \
439     "<users><list>%s</list><count>%d</count></users>", \
440     user_stats->name_list, \
441     user_stats->num_entries);
442    
443     if(strlcat(xml, tmp, size) >= size) goto too_big_error;
444 pajs 1.2 }
445 pajs 1.1
446 pajs 1.28
447     /* swap stats */
448     if((swap_stats=get_swap_stats())==NULL){
449     log_msg(LOG_CRIT, "Failed to get swap statistics");
450     }else{
451     snprintf(tmp, size, \
452     "<swap><total>%lld</total><used>%lld</used><free>%lld</free></swap>",\
453     swap_stats->total, \
454     swap_stats->used, \
455     swap_stats->free);
456    
457     if(strlcat(xml, tmp, size) >= size) goto too_big_error;
458 pajs 1.2 }
459 pajs 1.28
460    
461     /* general stats */
462    
463     if((general_stats=get_general_stats())==NULL){
464     log_msg(LOG_CRIT, "Failed to get general statistics");
465     }else{
466     snprintf(tmp, size, \
467     "<os><name>%s</name><release>%s</release><version>%s</version><sysname>%s</sysname><platform>%s</platform><uptime>%ld</uptime></os>", \
468     general_stats->os_name, \
469     general_stats->os_release, \
470     general_stats->os_version, \
471     general_stats->hostname, \
472     general_stats->platform, \
473     (long)general_stats->uptime);
474    
475     if(strlcat(xml, tmp, size) >= size) goto too_big_error;
476    
477 pajs 1.2 }
478 pajs 1.1
479 pajs 1.28
480     /* process stats */
481     if((process_stats=get_process_stats())==NULL){
482     log_msg(LOG_CRIT, "Failed to get general statistics");
483     }else{
484     snprintf(tmp, size, \
485     "<processes><sleeping>%d</sleeping><cpu>%d</cpu><zombie>%d</zombie><stopped>%d</stopped><total>%d</total></processes>",\
486     process_stats->sleeping, \
487     process_stats->running, \
488     process_stats->zombie, \
489     process_stats->stopped, \
490     process_stats->total);
491    
492     if(strlcat(xml, tmp, size) >= size) goto too_big_error;
493 pajs 1.4
494 pajs 1.28 }
495 pajs 1.4
496    
497 pajs 1.28 /* Get paging stats */
498     if((page_stats=get_page_stats_diff())==NULL){
499     log_msg(LOG_CRIT, "Failed to get paging statistics");
500     }else{
501     if(page_stats->systime!=0){
502     x=page_stats->pages_pagein / page_stats->systime;
503     y=page_stats->pages_pageout / page_stats->systime;
504     }else{
505     x=page_stats->pages_pagein;
506     y=page_stats->pages_pageout;
507     }
508     snprintf(tmp, size, \
509     "<pages><swapins>%lld</swapins><swapouts>%lld</swapouts></pages>", \
510     x, \
511     y);
512    
513     if(strlcat(xml, tmp, size) >= size) goto too_big_error;
514     }
515 pajs 1.4
516    
517 pajs 1.28 /* get diskio stats */
518    
519     if((diskio_stats=get_diskio_stats_diff(&diskio_entries))==NULL){
520 pajs 1.31 log_msg(LOG_CRIT, "Failed to get diskio statistics");
521 pajs 1.28 }else{
522     strlcat(xml, "<diskio>", size);
523     for(counter=0;counter<diskio_entries;counter++){
524 pajs 1.4
525 pajs 1.28 if(diskio_stats->systime!=0){
526     x=diskio_stats->read_bytes / diskio_stats->systime;
527     y=diskio_stats->write_bytes / diskio_stats->systime;
528     }else{
529     x=diskio_stats->read_bytes;
530     y=diskio_stats->write_bytes;
531     }
532    
533     snprintf(tmp, size, \
534     "<p%d name=\"%s\" rbytes=\"%lld\" wbytes=\"%lld\"></p%d>", \
535     counter, \
536     diskio_stats->disk_name, \
537     x, \
538     y, \
539     counter);
540 pajs 1.9
541 pajs 1.28 strlcat(xml, tmp, size);
542     diskio_stats++;
543     }
544 pajs 1.4
545 pajs 1.28 if(strlcat(xml, "</diskio>", size) >= size) goto too_big_error;
546 pajs 1.4
547     }
548 pajs 1.18
549 pajs 1.28
550     /* get networks stats */
551    
552     if((network_stats=get_network_stats_diff(&network_entries))==NULL){
553     log_msg(LOG_CRIT, "Failed to get network statistics");
554     }else{
555     strlcat(xml, "<net>", size);
556     for(counter=0;counter<network_entries;counter++){
557     if(network_stats->systime!=0){
558     x=network_stats->rx / network_stats->systime;
559     y=network_stats->tx / network_stats->systime;
560     }else{
561     x=network_stats->rx;
562     y=network_stats->tx;
563     }
564 pajs 1.4
565 pajs 1.28 snprintf(tmp, size, \
566     "<p%d name=\"%s\" rx=\"%lld\" tx=\"%lld\"></p%d>", \
567     counter, \
568     network_stats->interface_name, \
569     x, \
570     y, \
571     counter);
572 pajs 1.4
573 pajs 1.28 strlcat(xml, tmp, size);
574     network_stats++;
575     }
576 pajs 1.10
577 pajs 1.28 if(strlcat(xml, "</net>", size) >= size) goto too_big_error;
578 pajs 1.6
579 pajs 1.28 }
580 pajs 1.4
581 pajs 1.18
582 pajs 1.28 /* get disk stats */
583    
584     if((disk_stats=get_disk_stats(&disk_entries))==NULL){
585     log_msg(LOG_CRIT, "Failed to get disk statistics");
586     }else{
587     strlcat(xml, "<disk>", size);
588     for(counter=0;counter<disk_entries;counter++){
589     snprintf(tmp, size, \
590     "<p%d name=\"%s\" mount=\"%s\" fstype=\"%s\" total=\"%lld\" used=\"%lld\" avail=\"%lld\" totalinodes=\"%lld\" usedinodes=\"%lld\" freeinodes=\"%lld\"></p%d>", \
591     counter, \
592     disk_stats->device_name, \
593     disk_stats->mnt_point, \
594     disk_stats->fs_type, \
595     disk_stats->size, \
596     disk_stats->used, \
597     disk_stats->avail, \
598     disk_stats->total_inodes, \
599     disk_stats->used_inodes, \
600     disk_stats->free_inodes, \
601     counter);
602 pajs 1.18
603 pajs 1.28 strlcat(xml, tmp, size);
604 pajs 1.9
605 pajs 1.28 disk_stats++;
606     }
607 pajs 1.9
608 pajs 1.28 if(strlcat(xml, "</disk>", size) >= size) goto too_big_error;
609 pajs 1.9
610     }
611 pajs 1.28
612 pajs 1.9
613 pajs 1.28 if(strlcat(xml, "</packet>", size) >= size) goto too_big_error;
614 pajs 1.9
615 pajs 1.28 /*If we got to here, it should of all been filled in nicely now */
616     return 0;
617 pajs 1.10
618 pajs 1.28 too_big_error:
619     log_msg(LOG_ERR, "UDP Packet is too large. Throwing away the packet");
620     return -1;
621 pajs 1.9 }
622 pajs 1.1
623 pajs 1.28
624    
625 pajs 1.17 void usage(char *progname){
626 pajs 1.28 fprintf(stderr, "Usage %s [options] server port\n", progname);
627     fprintf(stderr, "Options\n");
628     fprintf(stderr, " -v Verbose mode,-vv would make even more verbose\n");
629     fprintf(stderr, " -f Foreground mode, print errors to stderr\n");
630     fprintf(stderr, " -V Print version number\n");
631     fprintf(stderr, " -h Prints this help page\n");
632     exit(1);
633 pajs 1.17 }
634    
635 pajs 1.3 int main(int argc, char **argv){
636 pajs 1.28
637 pajs 1.2 ihost_state_t ihost_state;
638 pajs 1.28 udp_sockinfo_t udp_sockinfo;
639    
640 pajs 1.17 int cmdopt;
641     extern int optind;
642 pajs 1.28 pid_t pid;
643 pajs 1.19 FILE *f;
644 pajs 1.28 int packet_num=0;
645     int len;
646 pajs 1.18
647 pajs 1.28 char packet[MAX_UDP_PACKET_SIZE];
648 pajs 1.18
649 pajs 1.28 time_t cur_time, sleep_delay, udp_time=0, config_time=0;
650 pajs 1.18
651 pajs 1.28 /* Set default settings */
652     ihost_config.verbose=1;
653     ihost_config.daemon=1;
654     /* Set all errors to go down stderr until told otherwise */
655     ihost_config.log=stderr;
656    
657     /* Blank ihost_state to default settings */
658     ihost_state.filtermanager_host=NULL;
659     ihost_state.host_fqdn=NULL;
660     ihost_state.host_ip=NULL;
661     ihost_state.server_fqdn=NULL;
662     ihost_state.file_list=NULL;
663     ihost_state.last_modified=NULL;
664    
665     while((cmdopt=getopt(argc, argv, "vfhV")) != -1){
666     switch(cmdopt){
667     case 'v':
668     ihost_config.verbose++;
669     break;
670    
671     case 'f':
672     /* Force syslog logging since stderr will be closed in this case */
673     ihost_config.daemon=0;
674     break;
675    
676     case 'h':
677     usage(argv[0]);
678     break;
679    
680     case 'V':
681 tdb 1.29 fprintf(stderr, "%s version %s\n", argv[0], VERSION);
682 pajs 1.28 break;
683    
684     default:
685     usage(argv[0]);
686     exit(1);
687     }
688     }
689    
690     if(argc!=optind+2){
691     usage(argv[0]);
692     exit(1);
693     }
694 pajs 1.17
695 pajs 1.28 ihost_state.filtermanager_host=strdup(argv[optind]);
696     ihost_state.filtermanager_port=atoi(argv[optind+1]);
697    
698     if(gethostbyname(ihost_state.filtermanager_host)==NULL){
699     log_msg(LOG_CRIT, "Failed to lookup hostname. Please check settings");
700 pajs 1.3 exit(1);
701     }
702 pajs 1.28 if(ihost_state.filtermanager_port==0){
703     log_msg(LOG_ERR, "Invalid port number");
704     exit(1);
705 pajs 1.17 }
706 pajs 1.18
707 pajs 1.28 if(ihost_config.daemon){
708 pajs 1.18 pid=fork();
709     if(pid==-1){
710 pajs 1.28 log_msg(LOG_CRIT, "Failed to background exiting");
711     exit(1);
712 pajs 1.18 }else if(pid!=0){
713 pajs 1.28 /* Parent process */
714     return 0;
715     }
716     /* We should now be in the background*/
717     if(setsid()==-1){
718     log_msg(LOG_CRIT, "setsid failed");
719     exit(1);
720     }
721    
722 tdb 1.29 if((ihost_config.log=fopen(LOG_FILE, "a"))==NULL){
723 pajs 1.28 ihost_config.log=stderr;
724 tdb 1.29 log_msg(LOG_CRIT, "Failed to open Logfiles %s for writing", LOG_FILE);
725 pajs 1.18 exit(1);
726     }
727 pajs 1.28
728     fclose(stdin);
729     fclose(stdout);
730     fclose(stderr);
731    
732     }
733    
734     log_msg(LOG_INFO, "Starting ihost");
735    
736     log_msg(LOG_DEBUG,"Writing PID FILE");
737    
738     pid=getpid();
739    
740     if((f=fopen(PID_FILE,"w")) == NULL){
741     log_msg(LOG_CRIT, "Failed to write PID file");
742     }else{
743     if((fprintf(f,"%d",(int)pid)) <= 0 ){
744     log_msg(LOG_CRIT, "Failed to write PID file");
745     }
746     if((fclose(f))!=0){
747     log_msg(LOG_CRIT, "failed to close PID file");
748     }
749     }
750    
751     /* Get the initial config from the filter manager. Should this fail,
752     * wait, and then try again. */
753    
754     get_diskio_stats_diff(&packet_num);
755     packet_num=0;
756    
757     while(ihost_getconfig(&ihost_state)!=0){
758     log_msg(LOG_ERR, "Failed to get ihost config");
759     sleep(10);
760 pajs 1.18 }
761    
762 pajs 1.28 printf("%s\n%d\n", ihost_state.server_fqdn, ihost_state.server_udp_port);
763     while((create_udp_sockinfo(&udp_sockinfo, ihost_state.server_fqdn, ihost_state.server_udp_port))!=0){
764     log_msg(LOG_ERR, "Failed to create udp socket");
765     sleep(10);
766 pajs 1.18 }
767 pajs 1.2
768 pajs 1.28 config_time=time(NULL)+ihost_state.config_ttl;
769 pajs 1.5
770 pajs 1.28 /* Now have config.. collect data and send as often as required */
771 pajs 1.9 for(;;){
772     cur_time=time(NULL);
773 pajs 1.28
774     if(cur_time>=udp_time){
775     if((get_system_stats(packet_num++, &ihost_state, packet, MAX_UDP_PACKET_SIZE))!=0){
776     log_msg(LOG_ERR, "Failed to get system stats");
777     }
778    
779     len=strlen(packet);
780     log_msg(LOG_DEBUG, "Packet size: %d\nPacket: %s\n", len, packet);
781    
782     if((sendto(udp_sockinfo.sock, packet, len, 0, (struct sockaddr *) &udp_sockinfo.addr, sizeof(udp_sockinfo.addr)))!=len){
783     log_msg(LOG_CRIT, "Failed to send packet");
784 pajs 1.9 }
785 pajs 1.28 udp_time=cur_time+ihost_state.udp_update_time;
786     log_msg(LOG_DEBUG, "Next packet should be sent on %d", udp_time);
787 pajs 1.9 }
788 pajs 1.28
789     if(cur_time>=config_time){
790     if(ihost_getconfig(&ihost_state)!=0){
791     /* If we can't get the config, try again 5 minutes time */
792     log_msg(LOG_ERR, "Failed to get config, try again 5 minutes time");
793     config_time=time(NULL)+300;
794     }else{
795     close(udp_sockinfo.sock);
796    
797     while((create_udp_sockinfo(&udp_sockinfo, ihost_state.server_fqdn, ihost_state.server_udp_port))!=0){
798     log_msg(LOG_CRIT, "Failed to create udp socket");
799     sleep(10);
800     }
801    
802     config_time=time(NULL)+ihost_state.config_ttl;
803 pajs 1.10
804 pajs 1.28 log_msg(LOG_DEBUG, "Config expires on %d\n", ihost_state.config_ttl);
805 pajs 1.9 }
806     }
807 pajs 1.10
808 pajs 1.28 sleep_delay=udp_time-time(NULL);
809     log_msg(LOG_DEBUG, "Sleeping for %d", sleep_delay);
810 pajs 1.10 if(sleep_delay>0) sleep(sleep_delay);
811 pajs 1.28 }
812    
813     return(0);
814 pajs 1.1 }