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root/i-scream/projects/libstatgrab/src/libstatgrab/network_stats.c

Comparing projects/libstatgrab/src/libstatgrab/network_stats.c (file contents):
Revision 1.5 by pajs, Sat Mar 1 02:42:27 2003 UTC vs.
Revision 1.25 by pajs, Fri Jan 23 23:23:33 2004 UTC

#	Line 1 | Line 1
1	<	/*
1	>	/*
2		* i-scream central monitoring system
3	<	* http://www.i-scream.org.uk
4	<	* Copyright (C) 2000-2002 i-scream
3	>	* http://www.i-scream.org
4	>	* Copyright (C) 2000-2004 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.
6	>	* This library is free software; you can redistribute it and/or
7	>	* modify it under the terms of the GNU Lesser General Public
8	>	* License as published by the Free Software Foundation; either
9	>	* version 2.1 of the License, or (at your option) any later version.
10		*
11	<	* This program is distributed in the hope that it will be useful,
11	>	* This library 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.
13	>	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
14	>	* Lesser 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.
16	>	* You should have received a copy of the GNU Lesser General Public
17	>	* License along with this library; if not, write to the Free Software
18	>	* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
19	>	* 02111-1307 USA
20	>	*
21	>	* $Id$
22		*/
23
24		#ifdef HAVE_CONFIG_H
25		#include "config.h"
26		#endif
27
25	–	#include <stdio.h>
28		#include <stdlib.h>
29	+	#include <string.h>
30		#include "statgrab.h"
31	+	#include <time.h>
32		#ifdef SOLARIS
33		#include <kstat.h>
34		#include <sys/sysinfo.h>
31	–	#include <string.h>
35		#endif
36	+	#ifdef LINUX
37	+	#include <stdio.h>
38	+	#include <sys/types.h>
39	+	#include <regex.h>
40	+	#include "tools.h"
41	+	#endif
42	+	#ifdef ALLBSD
43	+	#include <sys/types.h>
44	+	#include <sys/socket.h>
45	+	#include <ifaddrs.h>
46	+	#include <net/if.h>
47	+	#endif
48
49		static network_stat_t *network_stats=NULL;
50		static int interfaces=0;
#	Line 72 | Line 87 | network_stat_t *network_stat_malloc(int needed_entries
87
88
89		network_stat_t *get_network_stats(int *entries){
90	+
91	+	static int sizeof_network_stats=0;
92	+	network_stat_t *network_stat_ptr;
93	+
94	+	#ifdef SOLARIS
95		kstat_ctl_t *kc;
96		kstat_t *ksp;
97		kstat_named_t *knp;
98	+	#endif
99
100	<	static int sizeof_network_stats=0;
100	>	#ifdef LINUX
101	>	FILE *f;
102	>	/* Horrible big enough, but it should be easily big enough */
103	>	char line[8096];
104	>	regex_t regex;
105	>	regmatch_t line_match[4];
106	>	#endif
107	>	#ifdef ALLBSD
108	>	struct ifaddrs *net, *net_ptr;
109	>	struct if_data *net_data;
110	>	#endif
111	>
112	>	#ifdef ALLBSD
113	>	if(getifaddrs(&net) != 0){
114	>	return NULL;
115	>	}
116	>
117	>	interfaces=0;
118
119	<	network_stat_t *network_stat_ptr;
119	>	for(net_ptr=net;net_ptr!=NULL;net_ptr=net_ptr->ifa_next){
120	>	if(net_ptr->ifa_addr->sa_family != AF_LINK) continue;
121	>	network_stats=network_stat_malloc((interfaces+1), &sizeof_network_stats, network_stats);
122	>	if(network_stats==NULL){
123	>	return NULL;
124	>	}
125	>	network_stat_ptr=network_stats+interfaces;
126	>
127	>	if(network_stat_ptr->interface_name!=NULL) free(network_stat_ptr->interface_name);
128	>	network_stat_ptr->interface_name=strdup(net_ptr->ifa_name);
129	>	if(network_stat_ptr->interface_name==NULL) return NULL;
130	>	net_data=(struct if_data *)net_ptr->ifa_data;
131	>	network_stat_ptr->rx=net_data->ifi_ibytes;
132	>	network_stat_ptr->tx=net_data->ifi_obytes;
133	>	network_stat_ptr->systime=time(NULL);
134	>	interfaces++;
135	>	}
136	>	freeifaddrs(net);
137	>	#endif
138
139	+	#ifdef SOLARIS
140		if ((kc = kstat_open()) == NULL) {
141		return NULL;
142		}
143
144	<	interfaces=0;
144	>	interfaces=0;
145
146		for (ksp = kc->kc_chain; ksp; ksp = ksp->ks_next) {
147		if (!strcmp(ksp->ks_class, "net")) {
148		kstat_read(kc, ksp, NULL);
149
150	<	if((knp=kstat_data_lookup(ksp, "rbytes64"))==NULL){
150	>	#ifdef SOL7
151	>	#define RLOOKUP "rbytes"
152	>	#define WLOOKUP "obytes"
153	>	#define VALTYPE value.ui32
154	>	#else
155	>	#define RLOOKUP "rbytes64"
156	>	#define WLOOKUP "obytes64"
157	>	#define VALTYPE value.ui64
158	>	#endif
159	>
160	>	if((knp=kstat_data_lookup(ksp, RLOOKUP))==NULL){
161		/* Not a network interface, so skip to the next entry */
162		continue;
163		}
#	Line 100 | Line 167 | network_stat_t *get_network_stats(int *entries){
167		return NULL;
168		}
169		network_stat_ptr=network_stats+interfaces;
170	<	network_stat_ptr->rx=knp->value.ui64;
170	>	network_stat_ptr->rx=knp->VALTYPE;
171
172	<	if((knp=kstat_data_lookup(ksp, "obytes64"))==NULL){
172	>	if((knp=kstat_data_lookup(ksp, WLOOKUP))==NULL){
173		/* Not a network interface, so skip to the next entry */
174		continue;
175		}
176	<	network_stat_ptr->tx=knp->value.ui64;
176	>	network_stat_ptr->tx=knp->VALTYPE;
177		if(network_stat_ptr->interface_name!=NULL){
178		free(network_stat_ptr->interface_name);
179		}
#	Line 118 | Line 185 | network_stat_t *get_network_stats(int *entries){
185		}
186
187		kstat_close(kc);
188	+	#endif
189	+	#ifdef LINUX
190	+	f=fopen("/proc/net/dev", "r");
191	+	if(f==NULL){
192	+	return NULL;
193	+	}
194	+	/* read the 2 lines.. Its the title, so we dont care :) */
195	+	fgets(line, sizeof(line), f);
196	+	fgets(line, sizeof(line), f);
197
198	+
199	+	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){
200	+	return NULL;
201	+	}
202	+
203	+	interfaces=0;
204	+
205	+	while((fgets(line, sizeof(line), f)) != NULL){
206	+	if((regexec(&regex, line, 4, line_match, 0))!=0){
207	+	continue;
208	+	}
209	+	network_stats=network_stat_malloc((interfaces+1), &sizeof_network_stats, network_stats);
210	+	if(network_stats==NULL){
211	+	return NULL;
212	+	}
213	+	network_stat_ptr=network_stats+interfaces;
214	+
215	+	if(network_stat_ptr->interface_name!=NULL){
216	+	free(network_stat_ptr->interface_name);
217	+	}
218	+
219	+	network_stat_ptr->interface_name=get_string_match(line, &line_match[1]);
220	+	network_stat_ptr->rx=get_ll_match(line, &line_match[2]);
221	+	network_stat_ptr->tx=get_ll_match(line, &line_match[3]);
222	+	network_stat_ptr->systime=time(NULL);
223	+
224	+	interfaces++;
225	+	}
226	+	fclose(f);
227	+	regfree(&regex);
228	+
229	+	#endif
230	+
231	+	#ifdef CYGWIN
232	+	return NULL;
233	+	#endif
234	+
235		*entries=interfaces;
236
237		return network_stats;
238		}
239
240	<	network_stat_t *get_network_stats_diff(int *entries){
241	<	static network_stat_t *network_stats_diff=NULL;
242	<	static int sizeof_net_stats_diff=0;
243	<	network_stat_t *network_stats_ptr, *network_stats_diff_ptr;
244	<	int ifaces, x, y;
240	>	long long transfer_diff(long long new, long long old){
241	>	#if defined(SOL7) || defined(LINUX) || defined(FREEBSD)
242	>	#define MAXVAL 4294967296LL
243	>	#else
244	>	#define MAXVAL 18446744073709551616LL
245	>	#endif
246	>	long long result;
247	>	if(new>=old){
248	>	result = (new-old);
249	>	}else{
250	>	result = (MAXVAL+(new-old));
251	>	}
252
253	<	if(network_stats==NULL){
254	<	network_stats_ptr=get_network_stats(&ifaces);
255	<	*entries=ifaces;
256	<	return network_stats_ptr;
253	>	return result;
254	>
255	>	}
256	>
257	>	network_stat_t *get_network_stats_diff(int *entries) {
258	>	static network_stat_t *diff = NULL;
259	>	static int diff_count = 0;
260	>	network_stat_t *src, *dest;
261	>	int i, j, new_count;
262	>
263	>	if (network_stats == NULL) {
264	>	/* No previous stats, so we can't calculate a difference. */
265	>	return get_network_stats(entries);
266		}
267
268	<	network_stats_diff=network_stat_malloc(interfaces, &sizeof_net_stats_diff, network_stats_diff);
269	<	if(network_stats_diff==NULL){
268	>	/* Resize the results array to match the previous stats. */
269	>	diff = network_stat_malloc(interfaces, &diff_count, diff);
270	>	if (diff == NULL) {
271		return NULL;
272		}
273
274	<	network_stats_ptr=network_stats;
275	<	network_stats_diff_ptr=network_stats_diff;
274	>	/* Copy the previous stats into the result. */
275	>	for (i = 0; i < diff_count; i++) {
276	>	src = &network_stats[i];
277	>	dest = &diff[i];
278
279	<	for(ifaces=0;ifaces<interfaces;ifaces++){
280	<	if(network_stats_diff_ptr->interface_name!=NULL){
149	<	free(network_stats_diff_ptr->interface_name);
279	>	if (dest->interface_name != NULL) {
280	>	free(dest->interface_name);
281		}
282	<	network_stats_diff_ptr->interface_name=strdup(network_stats_ptr->interface_name);
283	<	network_stats_diff_ptr->tx=network_stats_ptr->tx;
284	<	network_stats_diff_ptr->rx=network_stats_ptr->rx;
285	<	network_stats_diff_ptr->systime=network_stats->systime;
282	>	dest->interface_name = strdup(src->interface_name);
283	>	dest->rx = src->rx;
284	>	dest->tx = src->tx;
285	>	dest->systime = src->systime;
286	>	}
287
288	<	network_stats_ptr++;
289	<	network_stats_diff_ptr++;
288	>	/* Get a new set of stats. */
289	>	if (get_network_stats(&new_count) == NULL) {
290	>	return NULL;
291		}
159	–	network_stats_ptr=get_network_stats(&ifaces);
160	–	network_stats_diff_ptr=network_stats_diff;
292
293	<	for(x=0;x<sizeof_net_stats_diff;x++){
293	>	/* For each previous stat... */
294	>	for (i = 0; i < diff_count; i++) {
295	>	dest = &diff[i];
296
297	<	if((strcmp(network_stats_diff_ptr->interface_name, network_stats_ptr->interface_name))==0){
298	<	network_stats_diff_ptr->tx = network_stats_ptr->tx - network_stats_diff_ptr->tx;
299	<	network_stats_diff_ptr->rx = network_stats_ptr->rx - network_stats_diff_ptr->rx;
300	<	network_stats_diff_ptr->systime = network_stats_ptr->systime - network_stats_diff_ptr->systime;
301	<	}else{
302	<
303	<	network_stats_ptr=network_stats;
304	<	for(y=0;y<ifaces;y++){
305	<	if((strcmp(network_stats_diff_ptr->interface_name, network_stats_ptr->interface_name))==0){
306	<	network_stats_diff_ptr->tx = network_stats_ptr->tx - network_stats_diff_ptr->tx;
307	<	network_stats_diff_ptr->rx = network_stats_ptr->rx - network_stats_diff_ptr->rx;
308	<	network_stats_diff_ptr->systime = network_stats_ptr->systime - network_stats_diff_ptr->systime;
309	<	break;
177	<	}
297	>	/* ... find the corresponding new stat ... */
298	>	for (j = 0; j < new_count; j++) {
299	>	/* Try the new stat in the same position first,
300	>	since that's most likely to be it. */
301	>	src = &network_stats[(i + j) % new_count];
302	>	if (strcmp(src->interface_name, dest->interface_name) == 0) {
303	>	break;
304	>	}
305	>	}
306	>	if (j == new_count) {
307	>	/* No match found. */
308	>	continue;
309	>	}
310
311	<	network_stats_ptr++;
312	<	}
311	>	/* ... and subtract the previous stat from it to get the
312	>	difference. */
313	>	dest->rx = transfer_diff(src->rx, dest->rx);
314	>	dest->tx = transfer_diff(src->tx, dest->tx);
315	>	dest->systime = src->systime - dest->systime;
316	>	}
317	>
318	>	*entries = diff_count;
319	>	return diff;
320	>	}
321	>	/* NETWORK INTERFACE STATS */
322	>
323	>	void network_iface_stat_init(int start, int end, network_iface_stat_t *net_stats){
324	>
325	>	for(net_stats+=start; start<end; start++){
326	>	net_stats->interface_name=NULL;
327	>	net_stats->speed=0;
328	>	net_stats->dup=NO_DUPLEX;
329	>	net_stats++;
330	>	}
331	>	}
332	>
333	>	network_iface_stat_t *network_iface_stat_malloc(int needed_entries, int *cur_entries, network_iface_stat_t *net_stats){
334	>
335	>	if(net_stats==NULL){
336	>
337	>	if((net_stats=malloc(needed_entries * sizeof(network_iface_stat_t)))==NULL){
338	>	return NULL;
339		}
340	+	network_iface_stat_init(0, needed_entries, net_stats);
341	+	*cur_entries=needed_entries;
342
343	<	network_stats_ptr++;
184	<	network_stats_diff_ptr++;
343	>	return net_stats;
344		}
345
346	<	*entries=sizeof_net_stats_diff;
347	<	return network_stats_diff;
348	<	}
346	>
347	>	if(*cur_entries<needed_entries){
348	>	net_stats=realloc(net_stats, (sizeof(network_iface_stat_t)*needed_entries));
349	>	if(net_stats==NULL){
350	>	return NULL;
351	>	}
352	>	network_iface_stat_init(*cur_entries, needed_entries, net_stats);
353	>	*cur_entries=needed_entries;
354	>	}
355	>
356	>	return net_stats;
357	>	}
358	>
359	>	network_iface_stat_t *get_network_iface_stats(int *entries){
360	>	static network_iface_stat_t *network_iface_stats;
361	>	network_iface_stat_t *network_iface_stat_ptr;
362	>	static int sizeof_network_iface_stats=0;
363	>	int ifaces;
364	>
365	>	#ifdef SOLARIS
366	>	kstat_ctl_t *kc;
367	>	kstat_t *ksp;
368	>	kstat_named_t *knp;
369	>	#endif
370	>
371	>	#ifdef SOLARIS
372	>	if ((kc = kstat_open()) == NULL) {
373	>	return NULL;
374	>	}
375	>
376	>	ifaces=0;
377	>
378	>	for (ksp = kc->kc_chain; ksp; ksp = ksp->ks_next) {
379	>	if (!strcmp(ksp->ks_class, "net")) {
380	>	kstat_read(kc, ksp, NULL);
381	>	if((knp=kstat_data_lookup(ksp, "ifspeed"))==NULL){
382	>	/* Not a network interface, so skip to the next entry */
383	>	continue;
384	>	}
385	>	network_iface_stats=network_iface_stat_malloc((ifaces+1), &sizeof_network_iface_stats, network_iface_stats);
386	>	if(network_iface_stats==NULL){
387	>	return NULL;
388	>	}
389	>	network_iface_stat_ptr = network_iface_stats + interfaces;
390	>	network_iface_stat_ptr->speed = knp->value.ui64 / (1000*1000);
391	>
392	>	if((knp=kstat_data_lookup(ksp, "link_duplex"))==NULL){
393	>	/* Not a network interface, so skip to the next entry */
394	>	continue;
395	>	}
396	>
397	>	if(knp->value.ui64 == 0){
398	>	network_iface_stat_ptr->dup = FULL_DUPLEX;
399	>	}else{
400	>	network_iface_stat_ptr->dup = HALF_DUPLEX;
401	>	}
402	>
403	>	network_iface_stat_ptr->interface_name = strdup(ksp->ks_name);
404	>	interfaces++;
405	>	}
406	>	}
407	>	kstat_close(kc);
408	>
409	>	#endif
410	>	*entries = interfaces;
411	>	return network_iface_stats;
412	>	}
413

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