src/libstatgrab/network_stats.c

/* 
 * i-scream central monitoring system
 * http://www.i-scream.org
 * Copyright (C) 2000-2003 i-scream
 * 
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 * 
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 * 
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 */

#ifdef HAVE_CONFIG_H
#include "config.h"
#endif

#include <stdlib.h>
#include <string.h>
#include "statgrab.h"
#include <time.h>
#ifdef SOLARIS
#include <kstat.h>
#include <sys/sysinfo.h>
#endif
#ifdef LINUX
#include <stdio.h>
#include <sys/types.h>
#include <regex.h>
#include "tools.h"
#endif
#ifdef ALLBSD
#include <sys/types.h>
#include <sys/socket.h>
#include <ifaddrs.h>
#include <net/if.h>
#endif

static network_stat_t *network_stats=NULL;
static int interfaces=0;

void network_stat_init(int start, int end, network_stat_t *net_stats){

        for(net_stats+=start; start<end; start++){
                net_stats->interface_name=NULL;
                net_stats->tx=0;
                net_stats->rx=0;
                net_stats++;
        }
}

network_stat_t *network_stat_malloc(int needed_entries, int *cur_entries, network_stat_t *net_stats){

        if(net_stats==NULL){

                if((net_stats=malloc(needed_entries * sizeof(network_stat_t)))==NULL){
                        return NULL;
                }
                network_stat_init(0, needed_entries, net_stats);
                *cur_entries=needed_entries;

                return net_stats;
        }


        if(*cur_entries<needed_entries){
                net_stats=realloc(net_stats, (sizeof(network_stat_t)*needed_entries));
                if(net_stats==NULL){
                        return NULL;
                }
                network_stat_init(*cur_entries, needed_entries, net_stats);
                *cur_entries=needed_entries;
        }

        return net_stats;
}


network_stat_t *get_network_stats(int *entries){

        static int sizeof_network_stats=0;      
        network_stat_t *network_stat_ptr;

#ifdef SOLARIS
        kstat_ctl_t *kc;
        kstat_t *ksp;
        kstat_named_t *knp;
#endif

#ifdef LINUX
        FILE *f;
        /* Horrible big enough, but it should be easily big enough */
        char line[8096];
        regex_t regex;
        regmatch_t line_match[4];
#endif
#ifdef ALLBSD
        struct ifaddrs *net, *net_ptr;
        struct if_data *net_data;
#endif

#ifdef ALLBSD
        if(getifaddrs(&net) != 0){
                return NULL;
        }

        interfaces=0;
        
        for(net_ptr=net;net_ptr!=NULL;net_ptr=net_ptr->ifa_next){
                if(net_ptr->ifa_addr->sa_family != AF_LINK) continue;
                network_stats=network_stat_malloc((interfaces+1), &sizeof_network_stats, network_stats);
                if(network_stats==NULL){
                        return NULL;
                }
                network_stat_ptr=network_stats+interfaces;
                
                if(network_stat_ptr->interface_name!=NULL) free(network_stat_ptr->interface_name);
                network_stat_ptr->interface_name=strdup(net_ptr->ifa_name);
                if(network_stat_ptr->interface_name==NULL) return NULL;
                net_data=(struct if_data *)net_ptr->ifa_data;
                network_stat_ptr->rx=net_data->ifi_ibytes;
                network_stat_ptr->tx=net_data->ifi_obytes;                      
                network_stat_ptr->systime=time(NULL);
                interfaces++;
        }
        freeifaddrs(net);       
#endif

#ifdef SOLARIS
        if ((kc = kstat_open()) == NULL) {
                return NULL;
        }

        interfaces=0;

        for (ksp = kc->kc_chain; ksp; ksp = ksp->ks_next) {
                if (!strcmp(ksp->ks_class, "net")) {
                        kstat_read(kc, ksp, NULL);

#ifdef SOL7
#define RLOOKUP "rbytes"
#define WLOOKUP "obytes"
#define VALTYPE value.ui32
#else
#define RLOOKUP "rbytes64"
#define WLOOKUP "obytes64"
#define VALTYPE value.ui64
#endif

                        if((knp=kstat_data_lookup(ksp, RLOOKUP))==NULL){
                                /* Not a network interface, so skip to the next entry */
                                continue;
                        }

                        network_stats=network_stat_malloc((interfaces+1), &sizeof_network_stats, network_stats);
                        if(network_stats==NULL){
                                return NULL;
                        }
                        network_stat_ptr=network_stats+interfaces;
                        network_stat_ptr->rx=knp->VALTYPE;

                        if((knp=kstat_data_lookup(ksp, WLOOKUP))==NULL){
                                /* Not a network interface, so skip to the next entry */
                                continue;
                        }
                        network_stat_ptr->tx=knp->VALTYPE;
                        if(network_stat_ptr->interface_name!=NULL){
                                free(network_stat_ptr->interface_name);
                        }
                        network_stat_ptr->interface_name=strdup(ksp->ks_name);

                        network_stat_ptr->systime=time(NULL);
                        interfaces++;
                }
        }
                
        kstat_close(kc);        
#endif
#ifdef LINUX
        f=fopen("/proc/net/dev", "r");
        if(f==NULL){
                return NULL;
        }
        /* read the 2 lines.. Its the title, so we dont care :) */
        fgets(line, sizeof(line), f);
        fgets(line, sizeof(line), f);


        if((regcomp(&regex, "^[[:space:]]*([^:]+):[[:space:]]*([[:digit:]]+)[[:space:]]+[[:digit:]]+[[:space:]]+[[:digit:]]+[[:space:]]+[[:digit:]]+[[:space:]]+[[:digit:]]+[[:space:]]+[[:digit:]]+[[:space:]]+[[:digit:]]+[[:space:]]+[[:digit:]]+[[:space:]]+([[:digit:]]+)", REG_EXTENDED))!=0){
                return NULL;
        }

        interfaces=0;

        while((fgets(line, sizeof(line), f)) != NULL){
                if((regexec(&regex, line, 4, line_match, 0))!=0){
                        continue;
                }
                network_stats=network_stat_malloc((interfaces+1), &sizeof_network_stats, network_stats);
                if(network_stats==NULL){
                        return NULL;
                }
                network_stat_ptr=network_stats+interfaces;

                if(network_stat_ptr->interface_name!=NULL){
                        free(network_stat_ptr->interface_name);
                }

                network_stat_ptr->interface_name=get_string_match(line, &line_match[1]);
                network_stat_ptr->rx=get_ll_match(line, &line_match[2]);
                network_stat_ptr->tx=get_ll_match(line, &line_match[3]);
                network_stat_ptr->systime=time(NULL);

                interfaces++;
        }
        fclose(f);
        regfree(&regex);

#endif
        *entries=interfaces;

        return network_stats;   
}

long long transfer_diff(long long new, long long old){
#if defined(SOL7) || defined(LINUX) || defined(FREEBSD)
#define MAXVAL 4294967296LL
#else
#define MAXVAL 18446744073709551616LL
#endif
        long long result;
        if(new>=old){
                result = (new-old);
        }else{
                result = (MAXVAL+(new-old));
        }

        return result;

}

network_stat_t *get_network_stats_diff(int *entries){
        static network_stat_t *network_stats_diff=NULL;
        static int sizeof_net_stats_diff=0;
        network_stat_t *network_stats_ptr, *network_stats_diff_ptr;
        int ifaces, x, y;

        if(network_stats==NULL){
                network_stats_ptr=get_network_stats(&ifaces);
                *entries=ifaces;
                return network_stats_ptr;
        }

        network_stats_diff=network_stat_malloc(interfaces, &sizeof_net_stats_diff, network_stats_diff);
        if(network_stats_diff==NULL){
                return NULL;
        }

        network_stats_ptr=network_stats;
        network_stats_diff_ptr=network_stats_diff;

        for(ifaces=0;ifaces<interfaces;ifaces++){
                if(network_stats_diff_ptr->interface_name!=NULL){
                        free(network_stats_diff_ptr->interface_name);
                }
                network_stats_diff_ptr->interface_name=strdup(network_stats_ptr->interface_name);
                network_stats_diff_ptr->tx=network_stats_ptr->tx;
                network_stats_diff_ptr->rx=network_stats_ptr->rx;
                network_stats_diff_ptr->systime=network_stats->systime;

                network_stats_ptr++;
                network_stats_diff_ptr++;
        }
        network_stats_ptr=get_network_stats(&ifaces);           
        network_stats_diff_ptr=network_stats_diff;

        for(x=0;x<sizeof_net_stats_diff;x++){

                if((strcmp(network_stats_diff_ptr->interface_name, network_stats_ptr->interface_name))==0){
                        network_stats_diff_ptr->tx = transfer_diff(network_stats_ptr->tx, network_stats_diff_ptr->tx);
                        network_stats_diff_ptr->rx = transfer_diff(network_stats_ptr->rx, network_stats_diff_ptr->rx);
                        network_stats_diff_ptr->systime = network_stats_ptr->systime - network_stats_diff_ptr->systime; 
                }else{
                        
                        network_stats_ptr=network_stats;
                        for(y=0;y<ifaces;y++){
                                if((strcmp(network_stats_diff_ptr->interface_name, network_stats_ptr->interface_name))==0){
                                        network_stats_diff_ptr->tx = transfer_diff(network_stats_ptr->tx, network_stats_diff_ptr->tx);
                                        network_stats_diff_ptr->rx = transfer_diff(network_stats_ptr->rx, network_stats_diff_ptr->rx);  
                                        network_stats_diff_ptr->systime = network_stats_ptr->systime - network_stats_diff_ptr->systime; 
                                        break;
                                }

                                network_stats_ptr++;
                        }       
                }

                network_stats_ptr++;
                network_stats_diff_ptr++;
        }

        *entries=sizeof_net_stats_diff;
        return network_stats_diff;
}       

Revision:	1.19
Committed:	Fri Oct 24 17:03:20 2003 UTC (20 years, 6 months ago) by ats
Content type:	text/plain
Branch:	MAIN
Changes since 1.18:	+2 -2 lines
Log Message:	Add the correct type to a couple of long long constants.
#	User	Rev	Content
1	pajs	1.1	/*
2			* i-scream central monitoring system
3	tdb	1.15	* http://www.i-scream.org
4			* Copyright (C) 2000-2003 i-scream
5	pajs	1.1	*
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	tdb	1.4	#include <stdlib.h>
26	pajs	1.6	#include <string.h>
27	pajs	1.1	#include "statgrab.h"
28	tdb	1.11	#include <time.h>
29	pajs	1.1	#ifdef SOLARIS
30			#include <kstat.h>
31			#include <sys/sysinfo.h>
32	pajs	1.6	#endif
33			#ifdef LINUX
34			#include <stdio.h>
35			#include <sys/types.h>
36			#include <regex.h>
37			#include "tools.h"
38	pajs	1.1	#endif
39	ats	1.18	#ifdef ALLBSD
40	pajs	1.14	#include <sys/types.h>
41			#include <sys/socket.h>
42			#include <ifaddrs.h>
43			#include <net/if.h>
44			#endif
45	pajs	1.1
46	pajs	1.3	static network_stat_t *network_stats=NULL;
47			static int interfaces=0;
48	pajs	1.1
49	pajs	1.3	void network_stat_init(int start, int end, network_stat_t *net_stats){
50
51			for(net_stats+=start; start<end; start++){
52			net_stats->interface_name=NULL;
53			net_stats->tx=0;
54			net_stats->rx=0;
55			net_stats++;
56			}
57			}
58
59			network_stat_t network_stat_malloc(int needed_entries, int cur_entries, network_stat_t *net_stats){
60
61			if(net_stats==NULL){
62
63			if((net_stats=malloc(needed_entries * sizeof(network_stat_t)))==NULL){
64	pajs	1.1	return NULL;
65			}
66	pajs	1.3	network_stat_init(0, needed_entries, net_stats);
67			*cur_entries=needed_entries;
68
69	pajs	1.1	return net_stats;
70			}
71	pajs	1.3
72
73			if(*cur_entries<needed_entries){
74			net_stats=realloc(net_stats, (sizeof(network_stat_t)*needed_entries));
75			if(net_stats==NULL){
76	pajs	1.1	return NULL;
77			}
78	pajs	1.3	network_stat_init(*cur_entries, needed_entries, net_stats);
79			*cur_entries=needed_entries;
80	pajs	1.1	}
81
82			return net_stats;
83			}
84
85	pajs	1.3
86	pajs	1.1	network_stat_t get_network_stats(int entries){
87	pajs	1.6
88			static int sizeof_network_stats=0;
89			network_stat_t *network_stat_ptr;
90
91			#ifdef SOLARIS
92	pajs	1.1	kstat_ctl_t *kc;
93			kstat_t *ksp;
94			kstat_named_t *knp;
95	pajs	1.6	#endif
96	pajs	1.3
97	pajs	1.6	#ifdef LINUX
98			FILE *f;
99	pajs	1.12	/* Horrible big enough, but it should be easily big enough */
100	pajs	1.6	char line[8096];
101			regex_t regex;
102			regmatch_t line_match[4];
103	pajs	1.14	#endif
104	ats	1.18	#ifdef ALLBSD
105	pajs	1.14	struct ifaddrs net, net_ptr;
106			struct if_data *net_data;
107			#endif
108
109	ats	1.18	#ifdef ALLBSD
110	pajs	1.14	if(getifaddrs(&net) != 0){
111			return NULL;
112			}
113
114			interfaces=0;
115
116			for(net_ptr=net;net_ptr!=NULL;net_ptr=net_ptr->ifa_next){
117			if(net_ptr->ifa_addr->sa_family != AF_LINK) continue;
118			network_stats=network_stat_malloc((interfaces+1), &sizeof_network_stats, network_stats);
119			if(network_stats==NULL){
120			return NULL;
121			}
122			network_stat_ptr=network_stats+interfaces;
123
124			if(network_stat_ptr->interface_name!=NULL) free(network_stat_ptr->interface_name);
125			network_stat_ptr->interface_name=strdup(net_ptr->ifa_name);
126			if(network_stat_ptr->interface_name==NULL) return NULL;
127			net_data=(struct if_data *)net_ptr->ifa_data;
128			network_stat_ptr->rx=net_data->ifi_ibytes;
129			network_stat_ptr->tx=net_data->ifi_obytes;
130			network_stat_ptr->systime=time(NULL);
131			interfaces++;
132			}
133			freeifaddrs(net);
134	pajs	1.6	#endif
135	pajs	1.1
136	pajs	1.6	#ifdef SOLARIS
137	pajs	1.1	if ((kc = kstat_open()) == NULL) {
138			return NULL;
139			}
140
141	pajs	1.6	interfaces=0;
142	pajs	1.3
143	pajs	1.1	for (ksp = kc->kc_chain; ksp; ksp = ksp->ks_next) {
144			if (!strcmp(ksp->ks_class, "net")) {
145			kstat_read(kc, ksp, NULL);
146
147	pajs	1.7	#ifdef SOL7
148			#define RLOOKUP "rbytes"
149			#define WLOOKUP "obytes"
150			#define VALTYPE value.ui32
151			#else
152			#define RLOOKUP "rbytes64"
153			#define WLOOKUP "obytes64"
154			#define VALTYPE value.ui64
155			#endif
156
157			if((knp=kstat_data_lookup(ksp, RLOOKUP))==NULL){
158	pajs	1.1	/* Not a network interface, so skip to the next entry */
159			continue;
160			}
161	pajs	1.3
162			network_stats=network_stat_malloc((interfaces+1), &sizeof_network_stats, network_stats);
163	pajs	1.1	if(network_stats==NULL){
164			return NULL;
165			}
166			network_stat_ptr=network_stats+interfaces;
167	pajs	1.7	network_stat_ptr->rx=knp->VALTYPE;
168	pajs	1.1
169	pajs	1.7	if((knp=kstat_data_lookup(ksp, WLOOKUP))==NULL){
170	pajs	1.1	/* Not a network interface, so skip to the next entry */
171			continue;
172			}
173	pajs	1.7	network_stat_ptr->tx=knp->VALTYPE;
174	pajs	1.1	if(network_stat_ptr->interface_name!=NULL){
175			free(network_stat_ptr->interface_name);
176			}
177			network_stat_ptr->interface_name=strdup(ksp->ks_name);
178	pajs	1.3
179			network_stat_ptr->systime=time(NULL);
180	pajs	1.1	interfaces++;
181			}
182			}
183	pajs	1.2
184			kstat_close(kc);
185	pajs	1.6	#endif
186			#ifdef LINUX
187			f=fopen("/proc/net/dev", "r");
188			if(f==NULL){
189			return NULL;
190			}
191			/* read the 2 lines.. Its the title, so we dont care :) */
192			fgets(line, sizeof(line), f);
193			fgets(line, sizeof(line), f);
194
195
196			if((regcomp(&regex, "^[[:space:]]([^:]+):[[:space:]]([[:digit:]]+)[[:space:]]+[[:digit:]]+[[:space:]]+[[:digit:]]+[[:space:]]+[[:digit:]]+[[:space:]]+[[:digit:]]+[[:space:]]+[[:digit:]]+[[:space:]]+[[:digit:]]+[[:space:]]+[[:digit:]]+[[:space:]]+([[:digit:]]+)", REG_EXTENDED))!=0){
197			return NULL;
198			}
199
200			interfaces=0;
201	pajs	1.1
202	pajs	1.6	while((fgets(line, sizeof(line), f)) != NULL){
203			if((regexec(&regex, line, 4, line_match, 0))!=0){
204			continue;
205			}
206			network_stats=network_stat_malloc((interfaces+1), &sizeof_network_stats, network_stats);
207			if(network_stats==NULL){
208			return NULL;
209			}
210			network_stat_ptr=network_stats+interfaces;
211
212			if(network_stat_ptr->interface_name!=NULL){
213			free(network_stat_ptr->interface_name);
214			}
215
216			network_stat_ptr->interface_name=get_string_match(line, &line_match[1]);
217			network_stat_ptr->rx=get_ll_match(line, &line_match[2]);
218			network_stat_ptr->tx=get_ll_match(line, &line_match[3]);
219			network_stat_ptr->systime=time(NULL);
220
221			interfaces++;
222			}
223	pajs	1.12	fclose(f);
224	pajs	1.13	regfree(&regex);
225	pajs	1.6
226			#endif
227	pajs	1.1	*entries=interfaces;
228
229			return network_stats;
230	pajs	1.3	}
231
232	pajs	1.8	long long transfer_diff(long long new, long long old){
233	pajs	1.17	#if defined(SOL7) \|\| defined(LINUX) \|\| defined(FREEBSD)
234	ats	1.19	#define MAXVAL 4294967296LL
235	pajs	1.8	#else
236	ats	1.19	#define MAXVAL 18446744073709551616LL
237	pajs	1.8	#endif
238			long long result;
239	pajs	1.10	if(new>=old){
240	pajs	1.8	result = (new-old);
241			}else{
242			result = (MAXVAL+(new-old));
243			}
244
245			return result;
246
247			}
248
249	pajs	1.3	network_stat_t get_network_stats_diff(int entries){
250			static network_stat_t *network_stats_diff=NULL;
251			static int sizeof_net_stats_diff=0;
252			network_stat_t network_stats_ptr, network_stats_diff_ptr;
253			int ifaces, x, y;
254
255			if(network_stats==NULL){
256			network_stats_ptr=get_network_stats(&ifaces);
257			*entries=ifaces;
258			return network_stats_ptr;
259			}
260
261			network_stats_diff=network_stat_malloc(interfaces, &sizeof_net_stats_diff, network_stats_diff);
262			if(network_stats_diff==NULL){
263			return NULL;
264			}
265
266			network_stats_ptr=network_stats;
267			network_stats_diff_ptr=network_stats_diff;
268
269			for(ifaces=0;ifaces<interfaces;ifaces++){
270			if(network_stats_diff_ptr->interface_name!=NULL){
271			free(network_stats_diff_ptr->interface_name);
272			}
273			network_stats_diff_ptr->interface_name=strdup(network_stats_ptr->interface_name);
274			network_stats_diff_ptr->tx=network_stats_ptr->tx;
275			network_stats_diff_ptr->rx=network_stats_ptr->rx;
276			network_stats_diff_ptr->systime=network_stats->systime;
277
278			network_stats_ptr++;
279			network_stats_diff_ptr++;
280			}
281			network_stats_ptr=get_network_stats(&ifaces);
282			network_stats_diff_ptr=network_stats_diff;
283
284			for(x=0;x<sizeof_net_stats_diff;x++){
285
286			if((strcmp(network_stats_diff_ptr->interface_name, network_stats_ptr->interface_name))==0){
287	pajs	1.9	network_stats_diff_ptr->tx = transfer_diff(network_stats_ptr->tx, network_stats_diff_ptr->tx);
288			network_stats_diff_ptr->rx = transfer_diff(network_stats_ptr->rx, network_stats_diff_ptr->rx);
289	pajs	1.3	network_stats_diff_ptr->systime = network_stats_ptr->systime - network_stats_diff_ptr->systime;
290			}else{
291
292			network_stats_ptr=network_stats;
293			for(y=0;y<ifaces;y++){
294			if((strcmp(network_stats_diff_ptr->interface_name, network_stats_ptr->interface_name))==0){
295	pajs	1.9	network_stats_diff_ptr->tx = transfer_diff(network_stats_ptr->tx, network_stats_diff_ptr->tx);
296			network_stats_diff_ptr->rx = transfer_diff(network_stats_ptr->rx, network_stats_diff_ptr->rx);
297	pajs	1.3	network_stats_diff_ptr->systime = network_stats_ptr->systime - network_stats_diff_ptr->systime;
298			break;
299			}
300
301			network_stats_ptr++;
302			}
303			}
304
305			network_stats_ptr++;
306			network_stats_diff_ptr++;
307			}
308
309	pajs	1.5	*entries=sizeof_net_stats_diff;
310	pajs	1.3	return network_stats_diff;
311			}
312	pajs	1.1