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root/i-scream/projects/cms/source/ihost/ihost.c

Comparing projects/cms/source/ihost/ihost.c (file contents):
Revision 1.1 by pajs, Fri May 10 17:11:30 2002 UTC vs.
Revision 1.38 by pajs, Wed Mar 19 21:51:50 2003 UTC

#	Line 1 | Line 1
1	+	/*
2	+	* i-scream central monitoring system
3	+	* http://www.i-scream.org.uk
4	+	* 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	+	#ifdef HAVE_CONFIG_H
22	+	#include "config.h"
23	+	#endif
24	+
25		#include <stdio.h>
2	–	#include <sys/socket.h>
26		#include <stdlib.h>
27		#include <unistd.h>
28	<	#include <syslog.h>
29	<	#include <netinet/in.h>
30	<	#include <ukcprog.h>
28	>	#include <string.h>
29	>	#include <sys/types.h>
30	>	#include <sys/socket.h>
31	>	#include <stdarg.h>
32	>	#include <errno.h>
33		#include <netdb.h>
9	–	#include <strings.h>
34
35	+	#include "ukcprog.h"
36	+	#include "statgrab.h"
37	+
38	+	#define LOG_CRIT 0
39	+	#define LOG_ERR 1
40	+	#define LOG_INFO 2
41	+	#define LOG_DEBUG 3
42	+
43		typedef struct{
44	<	int fm_port;
45	<	char *fm_host;
46	<
47	<	char *my_fqdn;
44	>	int filtermanager_port;
45	>	char *filtermanager_host;
46	>
47	>	char *host_ip;
48	>	char *host_fqdn;
49	>
50		char *server_fqdn;
51		int server_udp_port;
52	<	int server_tcp_port;
53	<	long last_modified;
54	<	char *files_list;
55	<	char *key;
52	>
53	>	/* Weird stuff iscream wants sent to it */
54	>	char *last_modified;
55	>	char *file_list;
56	>
57		int udp_update_time;
58	<	int tcp_update_time;
58	>	//      int config_ttl;
59
60	+	time_t config_ttl;
61	+
62		}ihost_state_t;
63
64	<	char* sock_comm(FILE *f, char* sendString){
65	<	char *reply;
64	>	typedef struct{
65	>	int verbose;
66	>	int daemon;
67
68	<	fprintf(f, sendString);
69	<	fflush(f);
32	<	reply=fpgetline(f);
33	<	/* Returns pointer to static buffer */
34	<	return reply;
35	<	}
68	>	FILE *log;
69	>	}ihost_config_t;
70
71	<	int ihost_configure(ihost_state_t *ihost_state){
71	>	typedef struct{
72		struct sockaddr_in addr;
73	<	struct in_addr haddr;
74	<	int sd;
41	<	FILE *fm_fd;
42	<	char *reply;
73	>	int sock;
74	>	}udp_sockinfo_t;
75
76	<	if ((sd = socket(AF_INET, SOCK_STREAM, PF_UNSPEC)) < 0) {
45	<	errf("Can't create AF_INET socket (%m)");
46	<	return -1;
47	<	}
76	>	ihost_config_t ihost_config;
77
78	<	if (get_host_addr(ihost_state->fm_host, &haddr) != 0){
79	<	errf("Failed to resolve address %s (%m)", ihost_state->fm_host);
80	<	return -1;
78	>	extern int errno;
79	>
80	>	/* Taken from the OpenSSH code. Its licence included in function.*/
81	>	#ifndef HAVE_STRLCAT
82	>
83	>	/*
84	>	* Copyright (c) 1998 Todd C. Miller <Todd.Miller@courtesan.com>
85	>	* All rights reserved.
86	>	*
87	>	* Redistribution and use in source and binary forms, with or without
88	>	* modification, are permitted provided that the following conditions
89	>	* are met:
90	>	* 1. Redistributions of source code must retain the above copyright
91	>	*    notice, this list of conditions and the following disclaimer.
92	>	* 2. Redistributions in binary form must reproduce the above copyright
93	>	*    notice, this list of conditions and the following disclaimer in the
94	>	*    documentation and/or other materials provided with the distribution.
95	>	* 3. The name of the author may not be used to endorse or promote products
96	>	*    derived from this software without specific prior written permission.
97	>	*
98	>	* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
99	>	* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
100	>	* AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL
101	>	* THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
102	>	* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
103	>	* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
104	>	* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
105	>	* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
106	>	* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
107	>	* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
108	>	*/
109	>
110	>	/*
111	>	* Appends src to string dst of size siz (unlike strncat, siz is the
112	>	* full size of dst, not space left).  At most siz-1 characters
113	>	* will be copied.  Always NUL terminates (unless siz <= strlen(dst)).
114	>	* Returns strlen(src) + MIN(siz, strlen(initial dst)).
115	>	* If retval >= siz, truncation occurred.
116	>	*/
117	>	size_t
118	>	strlcat(dst, src, siz)
119	>	char *dst;
120	>	const char *src;
121	>	size_t siz;
122	>	{
123	>	register char *d = dst;
124	>	register const char *s = src;
125	>	register size_t n = siz;
126	>	size_t dlen;
127	>
128	>	/* Find the end of dst and adjust bytes left but don't go past end */
129	>	while (n-- != 0 && *d != '\0')
130	>	d++;
131	>	dlen = d - dst;
132	>	n = siz - dlen;
133	>
134	>	if (n == 0)
135	>	return(dlen + strlen(s));
136	>	while (*s != '\0') {
137	>	if (n != 1) {
138	>	*d++ = *s;
139	>	n--;
140	>	}
141	>	s++;
142	>	}
143	>	*d = '\0';
144	>
145	>	return(dlen + (s - src));       /* count does not include NUL */
146	>	}
147	>
148	>	#endif
149	>	/* End strlcat function taken from OpenSSH */
150	>
151	>	void log_msg(int level, char *format, ...){
152	>	int cur_errno;
153	>	va_list ap;
154	>
155	>	cur_errno=errno;
156	>
157	>	if(level<=ihost_config.verbose){
158	>	va_start(ap, format);
159	>	vfprintf(ihost_config.log, format, ap);
160	>	va_end(ap);
161	>	if(level==LOG_CRIT){
162	>	fprintf(ihost_config.log, " (%s)\n", strerror(cur_errno));
163	>	}else{
164	>	fprintf(ihost_config.log, "\n");
165	>	}
166	>	fflush(ihost_config.log);
167		}
168	+	}
169
170	<	memset((char *)&addr, 0, sizeof addr);
171	<	addr.sin_family = AF_INET;
172	<	memcpy((char *)&addr.sin_addr, &haddr, sizeof haddr);
173	<	addr.sin_port =  htons(ihost_state->fm_port);
170	>	/* Takes many pointers, checks if they are NULL or not, and then free's them */
171	>	/* Deprciated - and i only wrote it today! :)
172	>	void m_free(int num_pointers, ...){
173	>	int x=0;
174	>	va_list ap;
175	>	void *p;
176
177	<	if (connect(sd, (struct sockaddr *)&addr, sizeof addr) != 0) {
178	<	errf("Failed to connect to %s on port %d (%m)", ihost_state->fm_host, ihost_state->fm_port);
179	<	return -1;
177	>	va_start(ap, num_pointers);
178	>	for(;x<num_pointers;x++){
179	>	p=va_arg(ap, void*);
180	>	if(p!=NULL){
181	>	free(p);
182	>	}
183		}
184	+	va_end(ap);
185	+	}
186	+	*/
187
188	<	if ((fm_fd=fdopen(sd,"r+")) == NULL){
189	<	errf("Failed to open stream (%m)");
190	<	return -1;
188	>	int create_udp_sockinfo(udp_sockinfo_t *udp_sockinfo, char *hostname, int port){
189	>
190	>	struct in_addr haddr;
191	>
192	>	log_msg(LOG_DEBUG, "Resolving name for udp connection");
193	>	if(get_host_addr(hostname, &haddr) != 0){
194	>	log_msg(LOG_CRIT, "Failed to lookup name");
195	>	return 1;
196		}
197	+
198	+	if((udp_sockinfo->sock=socket(PF_INET, SOCK_DGRAM, IPPROTO_UDP)) < 0){
199	+	log_msg(LOG_CRIT, "Failed to create UDP socket");
200	+	return 1;
201	+	}
202	+
203	+	memset(&(udp_sockinfo->addr), 0, sizeof(struct sockaddr_in));
204	+	udp_sockinfo->addr.sin_family=AF_INET;
205	+	memcpy((char *)&(udp_sockinfo->addr.sin_addr), &haddr, sizeof(haddr));
206	+	udp_sockinfo->addr.sin_port = htons(port);
207	+
208	+	log_msg(LOG_DEBUG, "Socket created");
209	+	return 0;
210	+	}
211	+
212	+	FILE *create_tcp_connection(char *hostname, int port){
213	+	int sock;
214	+	struct sockaddr_in addr;
215	+	struct in_addr haddr;
216	+	FILE *f;
217	+
218	+	log_msg(LOG_DEBUG, "Creating tcp socket");
219	+	if((sock = socket(PF_INET, SOCK_STREAM, IPPROTO_TCP))<0){
220	+	log_msg(LOG_CRIT, "Failed to make TCP Socket");
221	+	return NULL;
222	+	}
223	+
224	+	if((get_host_addr(hostname, &haddr))!=0){
225	+	log_msg(LOG_CRIT, "Failed to lookup name for %s", hostname);
226	+	close(sock);
227	+	return NULL;
228	+	}
229	+
230	+	memset(&addr, 0, sizeof(addr));
231	+	addr.sin_family = AF_INET;
232	+	memcpy(&addr.sin_addr, &haddr, sizeof(haddr));
233	+	addr.sin_port = htons(port);
234	+
235	+	log_msg(LOG_DEBUG, "Creating a tcp connection");
236	+	if(connect(sock, (struct sockaddr *)&addr, sizeof(addr)) !=0){
237	+	log_msg(LOG_CRIT, "Failed to connect to hostname %s on port %d", hostname, port);
238	+	close(sock);
239	+	return NULL;
240	+	}
241	+
242	+	if((f=fdopen(sock, "r+"))==NULL){
243	+	log_msg(LOG_CRIT, "Failed to connect to open filedescriptor on tcp connection");
244	+	close(sock);
245	+	return NULL;
246	+	}
247	+
248	+	return f;
249	+	}
250	+
251	+	int tcp_comm(FILE *f, char *send, char **response, char *expected){
252	+
253	+	log_msg(LOG_DEBUG, "Sending %s", send);
254	+	fprintf(f, "%s\n", send);
255	+	fflush(f);
256	+	*response=fpgetline(f);
257	+	fseek(f, 0, SEEK_CUR);
258	+
259	+	if(*response!=NULL) log_msg(LOG_DEBUG, "Recieved %s", *response);
260	+
261	+	if( (*response==NULL) || (strcmp(*response, "ERROR")==0) ) return -1;
262
263	<	reply=sock_comm(fm_fd, "STARTCONFIG\n");
264	<	if ((reply==NULL) || (strncasecmp(reply, "OK", 2) != 0) ) {
265	<	errf("Server error");
263	>	if(expected==NULL) return 0;
264	>
265	>	if((strcmp(expected, *response))==0) return 0;
266	>
267	>	log_msg(LOG_DEBUG, "Did not get expected response");
268	>	return -1;
269	>	}
270	>
271	>	int tcp_comm_strdup(FILE *f, char *send, char **response, char *expected){
272	>	if((tcp_comm(f, send, response, expected))!=0){
273		return -1;
274		}
275
276	<	reply=sock_comm(fm_fd, "LASTMODIFIED\n");
277	<	if((reply== NULL) || (strncasecmp(reply, "ERROR", 5))){
278	<	errf("Server error (%m)");
276	>	*response=strdup(*response);
277	>	if (response==NULL) return -1;
278	>
279	>	return 0;
280	>	}
281	>
282	>	int ihost_getconfig(ihost_state_t *ihost_state){
283	>
284	>	FILE *tcp_con;
285	>	char *response;
286	>	char *response_ptr;
287	>
288	>	/* Keep these in case of a failure and so it can keep running on the old config */
289	>	char *file_list=NULL;
290	>	char *last_modified=NULL;
291	>	char *host_fqdn=NULL;
292	>	char *host_ip=NULL;
293	>	int udp_update_time=0;
294	>	char *server_fqdn=NULL;
295	>	int server_udp_port=0;
296	>	time_t config_ttl=0;
297	>
298	>	if((tcp_con=create_tcp_connection(ihost_state->filtermanager_host, ihost_state->filtermanager_port))==NULL){
299		return -1;
300		}
301	<	ihost_state->last_modified=atol(reply);
301	>
302	>	if(ihost_state->file_list!=NULL || ihost_state->last_modified!=NULL){
303	>	if(tcp_con==NULL){
304	>	goto error;
305	>	}
306
307	<	reply=sock_comm(fm_fd, "FILELIST\n");
308	<	if((reply== NULL) || (strncasecmp(reply, "ERROR", 5))){
309	<	errf("Server error (%m)");
310	<	return -1;
307	>	if((tcp_comm(tcp_con, "CHECKCONFIG", &response, "OK"))!=0){
308	>	goto error;
309	>	}
310	>
311	>	if((tcp_comm(tcp_con, ihost_state->file_list, &response, "OK"))!=0){
312	>	goto error;
313	>	}
314	>
315	>	if((tcp_comm(tcp_con, ihost_state->last_modified, &response, "OK"))==0){
316	>	if((tcp_comm(tcp_con, "END", &response, "OK"))!=0){
317	>	goto error;
318	>	}
319	>	fclose(tcp_con);
320	>	return 0;
321	>	}else{
322	>	if((strcmp(response, "EXPIRED"))!=0){
323	>	goto error;
324	>	}
325	>	}
326		}
327	<	if((ihost_state->files_list=strdup(reply)) == NULL){
328	<	errf("strdup failed (%m)");
329	<	return -1;
327	>
328	>	/* If we got to here, the config must of expired */
329	>
330	>	if((tcp_comm(tcp_con, "STARTCONFIG", &response, "OK"))!=0){
331	>	goto error;
332		}
333
334	<	reply=sock_comm(fm_fd, "FQDN\n");
335	<	if((reply== NULL) || (strncasecmp(reply, "ERROR", 5))){
94	<	errf("Server error (%m)");
95	<	return -1;
334	>	if((tcp_comm_strdup(tcp_con, "LASTMODIFIED", &response, NULL))!=0){
335	>	goto error;
336		}
337	<	if((ihost_state->my_fqdn=strdup(reply)) == NULL){
338	<	errf("strdup failed (%m)");
339	<	return -1;
337	>	last_modified=response;
338	>
339	>	if((tcp_comm_strdup(tcp_con, "FILELIST", &response, NULL))!=0){
340	>	goto error;
341		}
342	+	file_list=response;
343
344	<	reply=sock_comm(fm_fd, "UDPUpdateTime\n");
345	<	if(reply== NULL){
104	<	errf("Server error (%m)");
105	<	return -1;
344	>	if((tcp_comm_strdup(tcp_con, "FQDN", &response, NULL))!=0){
345	>	goto error;
346		}
347	<	if (strncasecmp(reply, "ERROR", 5) != 0){
348	<	ihost_state->udp_update_time=atoi(reply);
347	>	host_fqdn=response;
348	>
349	>	if((tcp_comm_strdup(tcp_con, "IP", &response, NULL))!=0){
350	>	goto error;
351		}
352	+	host_ip=response;
353
354	<	reply=sock_comm(fm_fd, "TCPUpdateTime\n");
355	<	if(reply== NULL){
113	<	errf("Server error (%m)");
114	<	return -1;
354	>	if((tcp_comm(tcp_con, "UDPUpdateTime", &response, NULL))!=0){
355	>	goto error;
356		}
357	<	if (strncasecmp(reply, "ERROR", 5) != 0){
358	<	ihost_state->tcp_update_time=atoi(reply);
357	>	udp_update_time=atoi(response);
358	>
359	>	if((tcp_comm(tcp_con, "ConfigTTL", &response, NULL))!=0){
360	>	goto error;
361		}
362	+	config_ttl=atoi(response);
363
364	<	reply=sock_comm(fm_fd, "ENDCONFIG\n");
365	<	if(reply== NULL){
122	<	errf("Server error (%m)");
123	<	return -1;
364	>	if((tcp_comm(tcp_con, "ENDCONFIG", &response, NULL))!=0){
365	>	goto error;
366		}
367
368	<
368	>	if((tcp_comm(tcp_con, "FILTER", &response, NULL))!=0){
369	>	goto error;
370	>	}else{
371	>	response_ptr=strchr(response,';');
372	>	if(response_ptr==NULL){
373	>	log_msg(LOG_ERR, "Incorrect data sent by server");
374	>	goto error;
375	>	}
376	>	*response_ptr='\0';
377	>	server_fqdn=strdup(response);
378	>	if(server_fqdn==NULL){
379	>	goto error;
380	>	}
381	>	response_ptr++;
382	>	if(response_ptr==NULL){
383	>	log_msg(LOG_ERR, "Incorrect data sent by server");
384	>	goto error;
385	>	}
386
387	+	printf("string : %s\n", response_ptr);
388	+	server_udp_port=atoi(response_ptr);
389
390	+	if (server_udp_port==0){
391	+	log_msg(LOG_ERR, "Incorrect data sent by server");
392	+	goto error;
393	+	}
394	+	}
395	+
396	+	if((tcp_comm(tcp_con, "END", &response, "OK"))!=0){
397	+	goto error;
398	+	}
399	+
400	+	fclose(tcp_con);
401	+
402	+	/* We have the data we need, and its all been read correctly */
403	+
404	+	/* Free the old data before pointing them to the new data. m_free copes should
405	+	* this already be NULL */
406	+	if(ihost_state->file_list!=NULL) free(ihost_state->file_list);
407	+	if(ihost_state->last_modified!=NULL) free(ihost_state->last_modified);
408	+	if(ihost_state->host_fqdn!=NULL) free(ihost_state->host_fqdn);
409	+	if(ihost_state->server_fqdn!=NULL) free(ihost_state->server_fqdn);
410	+	if(ihost_state->host_ip!=NULL) free(ihost_state->host_ip);
411	+
412	+	ihost_state->file_list=file_list;
413	+	ihost_state->last_modified=last_modified;
414	+	ihost_state->host_fqdn=host_fqdn;
415	+	ihost_state->host_ip=host_ip;
416	+	ihost_state->server_fqdn=server_fqdn;
417	+	ihost_state->server_udp_port=server_udp_port;
418	+	ihost_state->udp_update_time=udp_update_time;
419	+	ihost_state->config_ttl=config_ttl;
420	+
421	+	log_msg(LOG_DEBUG, "UDP Update time %d", udp_update_time);
422	+	log_msg(LOG_DEBUG, "Configure ttl %d", config_ttl);
423	+
424		return 0;
425
426	+	error:
427	+
428	+	if(file_list!=NULL) free(file_list);
429	+	if(last_modified!=NULL) free(last_modified);
430	+	if(host_fqdn!=NULL) free(host_fqdn);
431	+	if(server_fqdn!=NULL) free(server_fqdn);
432	+	if(host_ip!=NULL) free(host_ip);
433	+	fclose(tcp_con);
434	+
435	+	return -1;
436		}
437
438	<	int main(){
438	>	int get_system_stats(int seq_no, ihost_state_t *ihost_state, char *xml, int size){
439	>	char tmp[size];
440	>	cpu_percent_t *cpu_percent;
441	>	mem_stat_t *mem_stats;
442	>	load_stat_t *load_stats;
443	>	user_stat_t *user_stats;
444	>	swap_stat_t *swap_stats;
445	>	general_stat_t *general_stats;
446	>	disk_stat_t *disk_stats;
447	>	diskio_stat_t *diskio_stats;
448	>	process_stat_t *process_stats;
449	>	network_stat_t *network_stats;
450	>	page_stat_t *page_stats;
451	>	int disk_entries=0;
452	>	int diskio_entries=0;
453	>	int network_entries=0;
454
455	+	int counter;
456	+	long long x;
457	+	long long y;
458	+
459	+	/* Print start of the packet we want */
460	+	snprintf(xml, size, "<packet seq_no=\"%d\" machine_name=\"%s\" date=\"%ld\" type=\"data\" ip=\"%s\">", \
461	+	seq_no, ihost_state->host_fqdn, time(NULL), ihost_state->host_ip);
462	+
463	+	/* Get cpu stats, check it is correct, then fill in its entry for the xml */
464	+	if((cpu_percent=cpu_percent_usage())==NULL){
465	+	log_msg(LOG_CRIT, "Failed to get cpu statistics");
466	+	}else{
467	+	snprintf(tmp, size, \
468	+	"<cpu><user>%3.2f</user><kernel>%3.2f</kernel><idle>%3.2f</idle><iowait>%3.2f</iowait><swap>%3.2f</swap></cpu>", \
469	+	cpu_percent->user, \
470	+	cpu_percent->kernel, \
471	+	cpu_percent->idle, \
472	+	cpu_percent->iowait, \
473	+	cpu_percent->swap);
474	+
475	+	if(strlcat(xml, tmp, size) >= size) goto too_big_error;
476	+	}
477	+
478	+
479	+	/*Get mem stats, and fill in xml */
480	+	if((mem_stats=get_memory_stats())==NULL){
481	+	log_msg(LOG_CRIT, "Failed to get memory statistics");
482	+	}else{
483	+	snprintf(tmp, size, \
484	+	"<memory><total>%lld</total><free>%lld</free><used>%lld</used><cache>%lld</cache></memory>", \
485	+	mem_stats->total, \
486	+	mem_stats->free, \
487	+	mem_stats->used, \
488	+	mem_stats->cache);
489	+
490	+	if(strlcat(xml, tmp, size) >= size) goto too_big_error;
491	+	}
492	+
493	+
494	+	/* Get load stats */
495	+	if((load_stats=get_load_stats())==NULL){
496	+	log_msg(LOG_CRIT, "Failed to get load statistics");
497	+	}else{
498	+	snprintf(tmp, size, \
499	+	"<load><load1>%.2lf</load1><load5>%.2lf</load5><load15>%.2lf</load15></load>", \
500	+	load_stats->min1, \
501	+	load_stats->min5, \
502	+	load_stats->min15);
503	+	if(strlcat(xml, tmp, size) >= size) goto too_big_error;
504	+	}
505	+
506	+
507	+	/* get user stats */
508	+
509	+	if((user_stats=get_user_stats())==NULL){
510	+	log_msg(LOG_CRIT, "Failed to get user statistics");
511	+	}else{
512	+
513	+	snprintf(tmp, size, \
514	+	"<users><list>%s</list><count>%d</count></users>", \
515	+	user_stats->name_list, \
516	+	user_stats->num_entries);
517	+
518	+	if(strlcat(xml, tmp, size) >= size) goto too_big_error;
519	+	}
520	+
521	+
522	+	/* swap stats */
523	+	if((swap_stats=get_swap_stats())==NULL){
524	+	log_msg(LOG_CRIT, "Failed to get swap statistics");
525	+	}else{
526	+	snprintf(tmp, size, \
527	+	"<swap><total>%lld</total><used>%lld</used><free>%lld</free></swap>",\
528	+	swap_stats->total, \
529	+	swap_stats->used, \
530	+	swap_stats->free);
531	+
532	+	if(strlcat(xml, tmp, size) >= size) goto too_big_error;
533	+	}
534	+
535	+
536	+	/* general stats */
537	+
538	+	if((general_stats=get_general_stats())==NULL){
539	+	log_msg(LOG_CRIT, "Failed to get general statistics");
540	+	}else{
541	+	snprintf(tmp, size, \
542	+	"<os><name>%s</name><release>%s</release><version>%s</version><sysname>%s</sysname><platform>%s</platform><uptime>%ld</uptime></os>", \
543	+	general_stats->os_name, \
544	+	general_stats->os_release, \
545	+	general_stats->os_version, \
546	+	general_stats->hostname, \
547	+	general_stats->platform, \
548	+	(long)general_stats->uptime);
549	+
550	+	if(strlcat(xml, tmp, size) >= size) goto too_big_error;
551	+
552	+	}
553	+
554	+
555	+	/* process stats */
556	+	if((process_stats=get_process_stats())==NULL){
557	+	log_msg(LOG_CRIT, "Failed to get general statistics");
558	+	}else{
559	+	snprintf(tmp, size, \
560	+	"<processes><sleeping>%d</sleeping><cpu>%d</cpu><zombie>%d</zombie><stopped>%d</stopped><total>%d</total></processes>",\
561	+	process_stats->sleeping, \
562	+	process_stats->running, \
563	+	process_stats->zombie, \
564	+	process_stats->stopped, \
565	+	process_stats->total);
566	+
567	+	if(strlcat(xml, tmp, size) >= size) goto too_big_error;
568	+
569	+	}
570	+
571	+
572	+	/* Get paging stats */
573	+	if((page_stats=get_page_stats_diff())==NULL){
574	+	log_msg(LOG_CRIT, "Failed to get paging statistics");
575	+	}else{
576	+	if(page_stats->systime!=0){
577	+	x=page_stats->pages_pagein / page_stats->systime;
578	+	y=page_stats->pages_pageout / page_stats->systime;
579	+	}else{
580	+	x=page_stats->pages_pagein;
581	+	y=page_stats->pages_pageout;
582	+	}
583	+	snprintf(tmp, size, \
584	+	"<pages><pageins>%lld</pageins><pageouts>%lld</pageouts></pages>", \
585	+	x, \
586	+	y);
587	+
588	+	if(strlcat(xml, tmp, size) >= size) goto too_big_error;
589	+	}
590	+
591	+
592	+	/* get diskio stats */
593	+
594	+	if((diskio_stats=get_diskio_stats_diff(&diskio_entries))==NULL){
595	+	log_msg(LOG_CRIT, "Failed to get diskio statistics");
596	+	}else{
597	+	strlcat(xml, "<diskio>", size);
598	+	for(counter=0;counter<diskio_entries;counter++){
599	+
600	+	if(diskio_stats->systime!=0){
601	+	x=diskio_stats->read_bytes / diskio_stats->systime;
602	+	y=diskio_stats->write_bytes / diskio_stats->systime;
603	+	}else{
604	+	x=diskio_stats->read_bytes;
605	+	y=diskio_stats->write_bytes;
606	+	}
607	+
608	+	snprintf(tmp, size, \
609	+	"<p%d name=\"%s\" rbytes=\"%lld\" wbytes=\"%lld\"></p%d>", \
610	+	counter, \
611	+	diskio_stats->disk_name, \
612	+	x, \
613	+	y, \
614	+	counter);
615	+
616	+	strlcat(xml, tmp, size);
617	+	diskio_stats++;
618	+	}
619	+
620	+	if(strlcat(xml, "</diskio>", size) >= size) goto too_big_error;
621	+
622	+	}
623	+
624	+
625	+	/* get networks stats */
626	+
627	+	if((network_stats=get_network_stats_diff(&network_entries))==NULL){
628	+	log_msg(LOG_CRIT, "Failed to get network statistics");
629	+	}else{
630	+	strlcat(xml, "<net>", size);
631	+	for(counter=0;counter<network_entries;counter++){
632	+	if(network_stats->systime!=0){
633	+	x=network_stats->rx / network_stats->systime;
634	+	y=network_stats->tx / network_stats->systime;
635	+	}else{
636	+	x=network_stats->rx;
637	+	y=network_stats->tx;
638	+	}
639	+
640	+	snprintf(tmp, size, \
641	+	"<p%d name=\"%s\" rx=\"%lld\" tx=\"%lld\"></p%d>", \
642	+	counter, \
643	+	network_stats->interface_name, \
644	+	x, \
645	+	y, \
646	+	counter);
647	+
648	+	strlcat(xml, tmp, size);
649	+	network_stats++;
650	+	}
651	+
652	+	if(strlcat(xml, "</net>", size) >= size) goto too_big_error;
653	+
654	+	}
655	+
656	+
657	+	/* get disk stats */
658	+
659	+	if((disk_stats=get_disk_stats(&disk_entries))==NULL){
660	+	log_msg(LOG_CRIT, "Failed to get disk statistics");
661	+	}else{
662	+	strlcat(xml, "<disk>", size);
663	+	for(counter=0;counter<disk_entries;counter++){
664	+	snprintf(tmp, size, \
665	+	"<p%d name=\"%s\" mount=\"%s\" fstype=\"%s\" total=\"%lld\" used=\"%lld\" avail=\"%lld\" totalinodes=\"%lld\" usedinodes=\"%lld\" freeinodes=\"%lld\"></p%d>", \
666	+	counter, \
667	+	disk_stats->device_name, \
668	+	disk_stats->mnt_point, \
669	+	disk_stats->fs_type, \
670	+	disk_stats->size, \
671	+	disk_stats->used, \
672	+	disk_stats->avail, \
673	+	disk_stats->total_inodes, \
674	+	disk_stats->used_inodes, \
675	+	disk_stats->free_inodes, \
676	+	counter);
677	+
678	+	strlcat(xml, tmp, size);
679	+
680	+	disk_stats++;
681	+	}
682	+
683	+	if(strlcat(xml, "</disk>", size) >= size) goto too_big_error;
684	+
685	+	}
686	+
687	+
688	+	if(strlcat(xml, "</packet>", size) >= size) goto too_big_error;
689	+
690	+	/*If we got to here, it should of all been filled in nicely now */
691		return 0;
692	+
693	+	too_big_error:
694	+	log_msg(LOG_ERR, "UDP Packet is too large. Throwing away the packet");
695	+	return -1;
696		}
697
698	+
699	+
700	+	void usage(char *progname){
701	+	fprintf(stderr, "Usage %s [options] server port\n", progname);
702	+	fprintf(stderr, "Options\n");
703	+	fprintf(stderr, "  -v           Verbose mode,-vv would make even more verbose\n");
704	+	fprintf(stderr, "  -f           Foreground mode, print errors to stderr\n");
705	+	fprintf(stderr, "  -V           Print version number\n");
706	+	fprintf(stderr, "  -h           Prints this help page\n");
707	+	exit(1);
708	+	}
709	+
710	+	int main(int argc, char **argv){
711	+
712	+	ihost_state_t ihost_state;
713	+	udp_sockinfo_t udp_sockinfo;
714	+
715	+	int cmdopt;
716	+	extern int optind;
717	+	pid_t pid;
718	+	FILE *f;
719	+	int packet_num=0;
720	+	int len;
721	+
722	+	char packet[MAX_UDP_PACKET_SIZE];
723	+
724	+	time_t cur_time, sleep_delay, udp_time=0, config_time=0;
725	+
726	+	/* Set default settings */
727	+	ihost_config.verbose=1;
728	+	ihost_config.daemon=1;
729	+	/* Set all errors to go down stderr until told otherwise */
730	+	ihost_config.log=stderr;
731	+
732	+	/* Blank ihost_state to default settings */
733	+	ihost_state.filtermanager_host=NULL;
734	+	ihost_state.host_fqdn=NULL;
735	+	ihost_state.host_ip=NULL;
736	+	ihost_state.server_fqdn=NULL;
737	+	ihost_state.file_list=NULL;
738	+	ihost_state.last_modified=NULL;
739	+
740	+	while((cmdopt=getopt(argc, argv, "vfhV")) != -1){
741	+	switch(cmdopt){
742	+	case 'v':
743	+	ihost_config.verbose++;
744	+	break;
745	+
746	+	case 'f':
747	+	/* Force syslog logging since stderr will be closed in this case */
748	+	ihost_config.daemon=0;
749	+	break;
750	+
751	+	case 'h':
752	+	usage(argv[0]);
753	+	break;
754	+
755	+	case 'V':
756	+	fprintf(stderr, "%s version %s\n", argv[0], VERSION);
757	+	break;
758	+
759	+	default:
760	+	usage(argv[0]);
761	+	exit(1);
762	+	}
763	+	}
764	+
765	+	if(argc!=optind+2){
766	+	usage(argv[0]);
767	+	exit(1);
768	+	}
769	+
770	+	ihost_state.filtermanager_host=strdup(argv[optind]);
771	+	ihost_state.filtermanager_port=atoi(argv[optind+1]);
772	+
773	+	if(gethostbyname(ihost_state.filtermanager_host)==NULL){
774	+	log_msg(LOG_CRIT, "Failed to lookup hostname. Please check settings");
775	+	exit(1);
776	+	}
777	+	if(ihost_state.filtermanager_port==0){
778	+	log_msg(LOG_ERR, "Invalid port number");
779	+	exit(1);
780	+	}
781	+
782	+	if(ihost_config.daemon){
783	+	pid=fork();
784	+	if(pid==-1){
785	+	log_msg(LOG_CRIT, "Failed to background exiting");
786	+	exit(1);
787	+	}else if(pid!=0){
788	+	/* Parent process */
789	+	return 0;
790	+	}
791	+	/* We should now be in the background*/
792	+	if(setsid()==-1){
793	+	log_msg(LOG_CRIT, "setsid failed");
794	+	exit(1);
795	+	}
796	+
797	+	if((ihost_config.log=fopen(LOG_FILE, "a"))==NULL){
798	+	ihost_config.log=stderr;
799	+	log_msg(LOG_CRIT, "Failed to open Logfiles %s for writing", LOG_FILE);
800	+	exit(1);
801	+	}
802	+
803	+	fclose(stdin);
804	+	fclose(stdout);
805	+	fclose(stderr);
806	+
807	+	}
808	+
809	+	log_msg(LOG_INFO, "Starting ihost");
810	+
811	+	log_msg(LOG_DEBUG,"Writing PID FILE");
812	+
813	+	pid=getpid();
814	+
815	+	if((f=fopen(PID_FILE,"w")) == NULL){
816	+	log_msg(LOG_CRIT, "Failed to write PID file");
817	+	}else{
818	+	if((fprintf(f,"%d",(int)pid)) <= 0 ){
819	+	log_msg(LOG_CRIT, "Failed to write PID file");
820	+	}
821	+	if((fclose(f))!=0){
822	+	log_msg(LOG_CRIT, "failed to close PID file");
823	+	}
824	+	}
825	+
826	+	/* Get the initial config from the filter manager. Should this fail,
827	+	* wait, and then try again. */
828	+
829	+	get_diskio_stats_diff(&packet_num);
830	+	packet_num=0;
831	+
832	+	while(ihost_getconfig(&ihost_state)!=0){
833	+	log_msg(LOG_ERR, "Failed to get ihost config");
834	+	sleep(10);
835	+	}
836	+
837	+	printf("%s\n%d\n", ihost_state.server_fqdn, ihost_state.server_udp_port);
838	+	while((create_udp_sockinfo(&udp_sockinfo, ihost_state.server_fqdn, ihost_state.server_udp_port))!=0){
839	+	log_msg(LOG_ERR, "Failed to create udp socket");
840	+	sleep(10);
841	+	}
842	+
843	+	config_time=time(NULL)+ihost_state.config_ttl;
844	+
845	+	/* Now have config.. collect data and send as often as required */
846	+	for(;;){
847	+	cur_time=time(NULL);
848	+
849	+	if(cur_time>=udp_time){
850	+	if((get_system_stats(packet_num++, &ihost_state, packet, MAX_UDP_PACKET_SIZE))!=0){
851	+	log_msg(LOG_ERR, "Failed to get system stats");
852	+	}
853	+
854	+	len=strlen(packet);
855	+	log_msg(LOG_DEBUG, "Packet size: %d\nPacket: %s\n", len, packet);
856	+
857	+	if((sendto(udp_sockinfo.sock, packet, len, 0, (struct sockaddr *) &udp_sockinfo.addr, sizeof(udp_sockinfo.addr)))!=len){
858	+	log_msg(LOG_CRIT, "Failed to send packet");
859	+	}
860	+	udp_time=cur_time+ihost_state.udp_update_time;
861	+	log_msg(LOG_DEBUG, "Next packet should be sent on %d", udp_time);
862	+	}
863	+
864	+	if(cur_time>=config_time){
865	+	if(ihost_getconfig(&ihost_state)!=0){
866	+	/* If we can't get the config, try again 5 minutes time */
867	+	log_msg(LOG_ERR, "Failed to get config, try again 5 minutes time");
868	+	config_time=time(NULL)+300;
869	+	}else{
870	+	close(udp_sockinfo.sock);
871	+
872	+	while((create_udp_sockinfo(&udp_sockinfo, ihost_state.server_fqdn, ihost_state.server_udp_port))!=0){
873	+	log_msg(LOG_CRIT, "Failed to create udp socket");
874	+	sleep(10);
875	+	}
876	+
877	+	config_time=time(NULL)+ihost_state.config_ttl;
878	+
879	+	log_msg(LOG_DEBUG, "Config expires on %d\n", ihost_state.config_ttl);
880	+	}
881	+	}
882	+
883	+	sleep_delay=udp_time-time(NULL);
884	+	log_msg(LOG_DEBUG, "Sleeping for %d", sleep_delay);
885	+	if(sleep_delay>0) sleep(sleep_delay);
886	+	}
887	+
888	+	return(0);
889	+	}

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