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

Comparing projects/cms/source/ihost/ihost.c (file contents):
Revision 1.28 by pajs, Mon Mar 3 12:18:35 2003 UTC vs.
Revision 1.43 by tdb, Sun Oct 5 12:52:12 2003 UTC

#	Line 1 | Line 1
1		/*
2		* i-scream central monitoring system
3	<	* http://www.i-scream.org.uk
3	>	* http://www.i-scream.org
4		* Copyright (C) 2000-2002 i-scream
5		*
6		* This program is free software; you can redistribute it and/or
#	Line 31 | Line 31
31		#include <stdarg.h>
32		#include <errno.h>
33		#include <netdb.h>
34	+	#include <netinet/in.h>
35
36		#include <ukcprog.h>
37	<	#include "statgrab.h"
37	>	#include <statgrab.h>
38
39		#define LOG_CRIT 0
40		#define LOG_ERR 1
41		#define LOG_INFO 2
42		#define LOG_DEBUG 3
43
43	–	#define PID_FILE "/var/run/ihost.pid"
44	–	#define LOGFILE_PATH "/var/log/ihost.log"
45	–	#define VERSION ".03"
46	–
47	–	#define MAX_UDP_PACKET_SIZE 8192
48	–
44		typedef struct{
45		int filtermanager_port;
46		char *filtermanager_host;
47
48		char *host_ip;
49		char *host_fqdn;
50	+	int preset_fqdn;
51	+	int preset_ip;
52
53		char *server_fqdn;
54		int server_udp_port;
#	Line 81 | Line 78 | typedef struct{
78
79		ihost_config_t ihost_config;
80
81	+	extern int errno;
82	+
83	+	/* Taken from the OpenSSH code. Its licence included in function.*/
84	+	#ifndef HAVE_STRLCAT
85	+
86	+	/*
87	+	* Copyright (c) 1998 Todd C. Miller <Todd.Miller@courtesan.com>
88	+	* All rights reserved.
89	+	*
90	+	* Redistribution and use in source and binary forms, with or without
91	+	* modification, are permitted provided that the following conditions
92	+	* are met:
93	+	* 1. Redistributions of source code must retain the above copyright
94	+	*    notice, this list of conditions and the following disclaimer.
95	+	* 2. Redistributions in binary form must reproduce the above copyright
96	+	*    notice, this list of conditions and the following disclaimer in the
97	+	*    documentation and/or other materials provided with the distribution.
98	+	* 3. The name of the author may not be used to endorse or promote products
99	+	*    derived from this software without specific prior written permission.
100	+	*
101	+	* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
102	+	* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
103	+	* AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL
104	+	* THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
105	+	* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
106	+	* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
107	+	* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
108	+	* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
109	+	* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
110	+	* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
111	+	*/
112	+
113	+	/*
114	+	* Appends src to string dst of size siz (unlike strncat, siz is the
115	+	* full size of dst, not space left).  At most siz-1 characters
116	+	* will be copied.  Always NUL terminates (unless siz <= strlen(dst)).
117	+	* Returns strlen(src) + MIN(siz, strlen(initial dst)).
118	+	* If retval >= siz, truncation occurred.
119	+	*/
120	+	size_t
121	+	strlcat(dst, src, siz)
122	+	char *dst;
123	+	const char *src;
124	+	size_t siz;
125	+	{
126	+	register char *d = dst;
127	+	register const char *s = src;
128	+	register size_t n = siz;
129	+	size_t dlen;
130	+
131	+	/* Find the end of dst and adjust bytes left but don't go past end */
132	+	while (n-- != 0 && *d != '\0')
133	+	d++;
134	+	dlen = d - dst;
135	+	n = siz - dlen;
136	+
137	+	if (n == 0)
138	+	return(dlen + strlen(s));
139	+	while (*s != '\0') {
140	+	if (n != 1) {
141	+	*d++ = *s;
142	+	n--;
143	+	}
144	+	s++;
145	+	}
146	+	*d = '\0';
147	+
148	+	return(dlen + (s - src));       /* count does not include NUL */
149	+	}
150	+
151	+	#endif
152	+	/* End strlcat function taken from OpenSSH */
153	+
154		void log_msg(int level, char *format, ...){
85	–	extern int errno;
155		int cur_errno;
156		va_list ap;
157
#	Line 97 | Line 166 | void log_msg(int level, char *format, ...){
166		}else{
167		fprintf(ihost_config.log, "\n");
168		}
169	+	fflush(ihost_config.log);
170		}
171		}
172
#	Line 156 | Line 226 | FILE *create_tcp_connection(char *hostname, int port){
226
227		if((get_host_addr(hostname, &haddr))!=0){
228		log_msg(LOG_CRIT, "Failed to lookup name for %s", hostname);
229	+	close(sock);
230		return NULL;
231		}
232
#	Line 167 | Line 238 | FILE *create_tcp_connection(char *hostname, int port){
238		log_msg(LOG_DEBUG, "Creating a tcp connection");
239		if(connect(sock, (struct sockaddr *)&addr, sizeof(addr)) !=0){
240		log_msg(LOG_CRIT, "Failed to connect to hostname %s on port %d", hostname, port);
241	+	close(sock);
242		return NULL;
243		}
244
#	Line 226 | Line 298 | int ihost_getconfig(ihost_state_t *ihost_state){
298		int server_udp_port=0;
299		time_t config_ttl=0;
300
301	<	tcp_con=create_tcp_connection(ihost_state->filtermanager_host, ihost_state->filtermanager_port);
301	>	if((tcp_con=create_tcp_connection(ihost_state->filtermanager_host, ihost_state->filtermanager_port))==NULL){
302	>	return -1;
303	>	}
304
305		if(ihost_state->file_list!=NULL || ihost_state->last_modified!=NULL){
306		if(tcp_con==NULL){
#	Line 242 | Line 316 | int ihost_getconfig(ihost_state_t *ihost_state){
316		}
317
318		if((tcp_comm(tcp_con, ihost_state->last_modified, &response, "OK"))==0){
319	<	if((tcp_comm(tcp_con, "END", &response, "OK"))==0){
319	>	if((tcp_comm(tcp_con, "END", &response, "OK"))!=0){
320		goto error;
321		}
322		fclose(tcp_con);
#	Line 313 | Line 387 | int ihost_getconfig(ihost_state_t *ihost_state){
387		goto error;
388		}
389
390	<	printf("string : %s\n", response_ptr);
390	>	/*printf("string : %s\n", response_ptr);*/
391		server_udp_port=atoi(response_ptr);
392
393		if (server_udp_port==0){
#	Line 334 | Line 408 | int ihost_getconfig(ihost_state_t *ihost_state){
408		* this already be NULL */
409		if(ihost_state->file_list!=NULL) free(ihost_state->file_list);
410		if(ihost_state->last_modified!=NULL) free(ihost_state->last_modified);
337	–	if(ihost_state->host_fqdn!=NULL) free(ihost_state->host_fqdn);
411		if(ihost_state->server_fqdn!=NULL) free(ihost_state->server_fqdn);
339	–	if(ihost_state->host_ip!=NULL) free(ihost_state->host_ip);
412
413	+	if(ihost_state->preset_fqdn){
414	+	if(host_fqdn != NULL) free(host_fqdn);
415	+	}else{
416	+	if(ihost_state->host_fqdn!=NULL) free(ihost_state->host_fqdn);
417	+	ihost_state->host_fqdn=host_fqdn;
418	+	}
419	+
420	+	if(ihost_state->preset_ip){
421	+	if(host_ip != NULL) free(host_ip);
422	+	}else{
423	+	if(ihost_state->host_ip!=NULL) free(ihost_state->host_ip);
424	+	ihost_state->host_ip=host_ip;
425	+	}
426	+
427	+
428		ihost_state->file_list=file_list;
429		ihost_state->last_modified=last_modified;
343	–	ihost_state->host_fqdn=host_fqdn;
344	–	ihost_state->host_ip=host_ip;
430		ihost_state->server_fqdn=server_fqdn;
431		ihost_state->server_udp_port=server_udp_port;
432		ihost_state->udp_update_time=udp_update_time;
#	Line 510 | Line 595 | int get_system_stats(int seq_no, ihost_state_t *ihost_
595		y=page_stats->pages_pageout;
596		}
597		snprintf(tmp, size, \
598	<	"<pages><swapins>%lld</swapins><swapouts>%lld</swapouts></pages>", \
598	>	"<pages><pageins>%lld</pageins><pageouts>%lld</pageouts></pages>", \
599		x, \
600		y);
601
#	Line 627 | Line 712 | too_big_error:
712
713
714		void usage(char *progname){
715	<	fprintf(stderr, "Usage %s [options] server port\n", progname);
716	<	fprintf(stderr, "Options\n");
717	<	fprintf(stderr, "  -v           Verbose mode,-vv would make even more verbose\n");
718	<	fprintf(stderr, "  -f           Foreground mode, print errors to stderr\n");
719	<	fprintf(stderr, "  -V           Print version number\n");
720	<	fprintf(stderr, "  -h           Prints this help page\n");
715	>	fprintf(stderr, "Usage %s [-v[v]] [-f] [-n name] [-i ip] [-s server] [-p port] [-V] [-h]\n\n", progname);
716	>	fprintf(stderr, "  -v    Verbose mode, -vv would make even more verbose\n");
717	>	fprintf(stderr, "  -f    Foreground mode, print errors to stderr\n");
718	>	fprintf(stderr, "  -n    Set the machine name to be reported as\n");
719	>	fprintf(stderr, "  -i    Set the IP to be reported as\n");
720	>	fprintf(stderr, "  -s    Specifies the i-scream server to connect to\n");
721	>	fprintf(stderr, "          default: %s\n", DEF_SERVER_NAME);
722	>	fprintf(stderr, "  -p    Specifies the i-scream server port\n");
723	>	fprintf(stderr, "          default: %d\n", DEF_SERVER_PORT);
724	>	fprintf(stderr, "  -V    Print version number\n");
725	>	fprintf(stderr, "  -h    Prints this help page\n");
726	>	fprintf(stderr, "\nReport bugs to <%s>.\n", PACKAGE_BUGREPORT);
727		exit(1);
728		}
729
#	Line 659 | Line 750 | int main(int argc, char **argv){
750		ihost_config.log=stderr;
751
752		/* Blank ihost_state to default settings */
753	<	ihost_state.filtermanager_host=NULL;
753	>	ihost_state.filtermanager_host=DEF_SERVER_NAME;
754	>	ihost_state.filtermanager_port=DEF_SERVER_PORT;
755		ihost_state.host_fqdn=NULL;
756		ihost_state.host_ip=NULL;
757	+	ihost_state.preset_fqdn = 0;
758	+	ihost_state.preset_ip = 0;
759		ihost_state.server_fqdn=NULL;
760		ihost_state.file_list=NULL;
761		ihost_state.last_modified=NULL;
762
763	<	while((cmdopt=getopt(argc, argv, "vfhV")) != -1){
763	>	while((cmdopt=getopt(argc, argv, "vfhVs:i:")) != -1){
764		switch(cmdopt){
765		case 'v':
766		ihost_config.verbose++;
#	Line 677 | Line 771 | int main(int argc, char **argv){
771		ihost_config.daemon=0;
772		break;
773
680	–	case 'h':
681	–	usage(argv[0]);
682	–	break;
683	–
774		case 'V':
775	<	fprintf(stderr, "%s version %s", argv[0], VERSION);
775	>	fprintf(stderr, "%s version %s\n", argv[0], VERSION);
776		break;
777	+	case 'n':
778	+	ihost_state.preset_fqdn = 1;
779	+	ihost_state.host_fqdn = strdup(optarg);
780	+	if(ihost_state.host_fqdn == NULL){
781	+	fprintf(stderr, "Missing hostname\n");
782	+	usage(argv[0]);
783	+	}
784	+	break;
785	+	case 'i':
786	+	/* Hmm.. Someone could set any string to be the IP, and it will let it */
787	+	ihost_state.preset_ip = 1;
788	+	ihost_state.host_ip = strdup(optarg);
789	+	if(ihost_state.host_ip == NULL){
790	+	fprintf(stderr, "Missing ip\n");
791	+	usage(argv[0]);
792	+	}
793	+	break;
794
795	+	case 's':
796	+	ihost_state.filtermanager_host=strdup(optarg);
797	+	break;
798	+
799	+	case 'p':
800	+	ihost_state.filtermanager_port=atoi(optarg);
801	+	break;
802	+
803	+	case 'h':
804		default:
805		usage(argv[0]);
806		exit(1);
807		}
808		}
809
694	–	if(argc!=optind+2){
695	–	usage(argv[0]);
696	–	exit(1);
697	–	}
698	–
699	–	ihost_state.filtermanager_host=strdup(argv[optind]);
700	–	ihost_state.filtermanager_port=atoi(argv[optind+1]);
701	–
810		if(gethostbyname(ihost_state.filtermanager_host)==NULL){
811		log_msg(LOG_CRIT, "Failed to lookup hostname. Please check settings");
812		exit(1);
#	Line 723 | Line 831 | int main(int argc, char **argv){
831		exit(1);
832		}
833
834	<	if((ihost_config.log=fopen(LOGFILE_PATH, "a"))==NULL){
834	>	if((ihost_config.log=fopen(LOG_FILE, "a"))==NULL){
835		ihost_config.log=stderr;
836	<	log_msg(LOG_CRIT, "Failed to open Logfiles %s for writing", LOGFILE_PATH);
836	>	log_msg(LOG_CRIT, "Failed to open Logfiles %s for writing", LOG_FILE);
837		exit(1);
838		}
839
#	Line 735 | Line 843 | int main(int argc, char **argv){
843
844		}
845
846	<	log_msg(LOG_INFO, "Starting ihost");
846	>	log_msg(LOG_INFO, "Starting ihost...");
847
848		log_msg(LOG_DEBUG,"Writing PID FILE");
849
#	Line 763 | Line 871 | int main(int argc, char **argv){
871		sleep(10);
872		}
873
874	<	printf("%s\n%d\n", ihost_state.server_fqdn, ihost_state.server_udp_port);
874	>	/*printf("%s\n%d\n", ihost_state.server_fqdn, ihost_state.server_udp_port);*/
875		while((create_udp_sockinfo(&udp_sockinfo, ihost_state.server_fqdn, ihost_state.server_udp_port))!=0){
876		log_msg(LOG_ERR, "Failed to create udp socket");
877		sleep(10);

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