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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 1.2 by pajs, Tue Feb 18 23:23:36 2003 UTC vs.
Revision 1.26 by pajs, Sun Jan 25 20:13:57 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>
26	–	#include "statgrab.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	+	#include <net/if_media.h>
48	+	#include <sys/ioctl.h>
49	+	#endif
50
51	<	#define START_VAL 1
51	>	static network_stat_t *network_stats=NULL;
52	>	static int interfaces=0;
53
54	<	network_stat_t *network_stat_init(int num_iface, int *wmark, network_stat_t *net_stats){
37	<	int x;
38	<	network_stat_t *net_stats_ptr;
54	>	void network_stat_init(int start, int end, network_stat_t *net_stats){
55
56	<	if(*wmark==-1){
57	<	printf("new malloc\n");
58	<	if((net_stats=malloc(START_VAL * sizeof(network_stat_t)))==NULL){
56	>	for(net_stats+=start; start<end; start++){
57	>	net_stats->interface_name=NULL;
58	>	net_stats->tx=0;
59	>	net_stats->rx=0;
60	>	net_stats++;
61	>	}
62	>	}
63	>
64	>	network_stat_t *network_stat_malloc(int needed_entries, int *cur_entries, network_stat_t *net_stats){
65	>
66	>	if(net_stats==NULL){
67	>
68	>	if((net_stats=malloc(needed_entries * sizeof(network_stat_t)))==NULL){
69		return NULL;
70		}
71	<	*wmark=START_VAL;
72	<	net_stats_ptr=net_stats;
73	<	for(x=0;x<(*wmark);x++){
48	<	net_stats_ptr->interface_name=NULL;
49	<	net_stats_ptr++;
50	<	}
71	>	network_stat_init(0, needed_entries, net_stats);
72	>	*cur_entries=needed_entries;
73	>
74		return net_stats;
75		}
76	<	if(num_iface>(*wmark-1)){
77	<	if((net_stats=realloc(net_stats, (*wmark)*2 * sizeof(network_stat_t)))==NULL){
76	>
77	>
78	>	if(*cur_entries<needed_entries){
79	>	net_stats=realloc(net_stats, (sizeof(network_stat_t)*needed_entries));
80	>	if(net_stats==NULL){
81		return NULL;
82		}
83	<
84	<	*wmark=(*wmark)*2;
59	<	net_stats_ptr=net_stats+num_iface;
60	<	for(x=num_iface;x<(*wmark);x++){
61	<	net_stats_ptr->interface_name=NULL;
62	<	net_stats_ptr++;
63	<	}
64	<	return net_stats;
83	>	network_stat_init(*cur_entries, needed_entries, net_stats);
84	>	*cur_entries=needed_entries;
85		}
86
87		return net_stats;
88		}
89
90	+
91		network_stat_t *get_network_stats(int *entries){
92	+
93	+	static int sizeof_network_stats=0;
94	+	network_stat_t *network_stat_ptr;
95	+
96	+	#ifdef SOLARIS
97		kstat_ctl_t *kc;
98		kstat_t *ksp;
99		kstat_named_t *knp;
100	+	#endif
101	+
102	+	#ifdef LINUX
103	+	FILE *f;
104	+	/* Horrible big enough, but it should be easily big enough */
105	+	char line[8096];
106	+	regex_t regex;
107	+	regmatch_t line_match[4];
108	+	#endif
109	+	#ifdef ALLBSD
110	+	struct ifaddrs *net, *net_ptr;
111	+	struct if_data *net_data;
112	+	#endif
113	+
114	+	#ifdef ALLBSD
115	+	if(getifaddrs(&net) != 0){
116	+	return NULL;
117	+	}
118	+
119	+	interfaces=0;
120
121	<	int interfaces=0;
122	<	network_stat_t *network_stat_ptr;
123	<	static network_stat_t *network_stats=NULL;
124	<	static int watermark=-1;
121	>	for(net_ptr=net;net_ptr!=NULL;net_ptr=net_ptr->ifa_next){
122	>	if(net_ptr->ifa_addr->sa_family != AF_LINK) continue;
123	>	network_stats=network_stat_malloc((interfaces+1), &sizeof_network_stats, network_stats);
124	>	if(network_stats==NULL){
125	>	return NULL;
126	>	}
127	>	network_stat_ptr=network_stats+interfaces;
128	>
129	>	if(network_stat_ptr->interface_name!=NULL) free(network_stat_ptr->interface_name);
130	>	network_stat_ptr->interface_name=strdup(net_ptr->ifa_name);
131	>	if(network_stat_ptr->interface_name==NULL) return NULL;
132	>	net_data=(struct if_data *)net_ptr->ifa_data;
133	>	network_stat_ptr->rx=net_data->ifi_ibytes;
134	>	network_stat_ptr->tx=net_data->ifi_obytes;
135	>	network_stat_ptr->systime=time(NULL);
136	>	interfaces++;
137	>	}
138	>	freeifaddrs(net);
139	>	#endif
140
141	+	#ifdef SOLARIS
142		if ((kc = kstat_open()) == NULL) {
143		return NULL;
144		}
145
146	+	interfaces=0;
147	+
148		for (ksp = kc->kc_chain; ksp; ksp = ksp->ks_next) {
149		if (!strcmp(ksp->ks_class, "net")) {
150		kstat_read(kc, ksp, NULL);
151
152	<	if((knp=kstat_data_lookup(ksp, "rbytes64"))==NULL){
152	>	#ifdef SOL7
153	>	#define RLOOKUP "rbytes"
154	>	#define WLOOKUP "obytes"
155	>	#define VALTYPE value.ui32
156	>	#else
157	>	#define RLOOKUP "rbytes64"
158	>	#define WLOOKUP "obytes64"
159	>	#define VALTYPE value.ui64
160	>	#endif
161	>
162	>	if((knp=kstat_data_lookup(ksp, RLOOKUP))==NULL){
163		/* Not a network interface, so skip to the next entry */
164		continue;
165		}
166	<	network_stats=network_stat_init(interfaces, &watermark, network_stats);
166	>
167	>	network_stats=network_stat_malloc((interfaces+1), &sizeof_network_stats, network_stats);
168		if(network_stats==NULL){
169		return NULL;
170		}
171		network_stat_ptr=network_stats+interfaces;
172	<	network_stat_ptr->rx=knp->value.ui64;
172	>	network_stat_ptr->rx=knp->VALTYPE;
173
174	<	if((knp=kstat_data_lookup(ksp, "obytes64"))==NULL){
174	>	if((knp=kstat_data_lookup(ksp, WLOOKUP))==NULL){
175		/* Not a network interface, so skip to the next entry */
176		continue;
177		}
178	<	network_stat_ptr->tx=knp->value.ui64;
178	>	network_stat_ptr->tx=knp->VALTYPE;
179		if(network_stat_ptr->interface_name!=NULL){
180		free(network_stat_ptr->interface_name);
181		}
182		network_stat_ptr->interface_name=strdup(ksp->ks_name);
183	+
184	+	network_stat_ptr->systime=time(NULL);
185		interfaces++;
186		}
187		}
188
189		kstat_close(kc);
190	+	#endif
191	+	#ifdef LINUX
192	+	f=fopen("/proc/net/dev", "r");
193	+	if(f==NULL){
194	+	return NULL;
195	+	}
196	+	/* read the 2 lines.. Its the title, so we dont care :) */
197	+	fgets(line, sizeof(line), f);
198	+	fgets(line, sizeof(line), f);
199
200	+
201	+	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){
202	+	return NULL;
203	+	}
204	+
205	+	interfaces=0;
206	+
207	+	while((fgets(line, sizeof(line), f)) != NULL){
208	+	if((regexec(&regex, line, 4, line_match, 0))!=0){
209	+	continue;
210	+	}
211	+	network_stats=network_stat_malloc((interfaces+1), &sizeof_network_stats, network_stats);
212	+	if(network_stats==NULL){
213	+	return NULL;
214	+	}
215	+	network_stat_ptr=network_stats+interfaces;
216	+
217	+	if(network_stat_ptr->interface_name!=NULL){
218	+	free(network_stat_ptr->interface_name);
219	+	}
220	+
221	+	network_stat_ptr->interface_name=get_string_match(line, &line_match[1]);
222	+	network_stat_ptr->rx=get_ll_match(line, &line_match[2]);
223	+	network_stat_ptr->tx=get_ll_match(line, &line_match[3]);
224	+	network_stat_ptr->systime=time(NULL);
225	+
226	+	interfaces++;
227	+	}
228	+	fclose(f);
229	+	regfree(&regex);
230	+
231	+	#endif
232	+
233	+	#ifdef CYGWIN
234	+	return NULL;
235	+	#endif
236	+
237		*entries=interfaces;
238
239		return network_stats;
240	+	}
241
242	+	long long transfer_diff(long long new, long long old){
243	+	#if defined(SOL7) || defined(LINUX) || defined(FREEBSD)
244	+	#define MAXVAL 4294967296LL
245	+	#else
246	+	#define MAXVAL 18446744073709551616LL
247	+	#endif
248	+	long long result;
249	+	if(new>=old){
250	+	result = (new-old);
251	+	}else{
252	+	result = (MAXVAL+(new-old));
253	+	}
254	+
255	+	return result;
256	+
257	+	}
258	+
259	+	network_stat_t *get_network_stats_diff(int *entries) {
260	+	static network_stat_t *diff = NULL;
261	+	static int diff_count = 0;
262	+	network_stat_t *src, *dest;
263	+	int i, j, new_count;
264	+
265	+	if (network_stats == NULL) {
266	+	/* No previous stats, so we can't calculate a difference. */
267	+	return get_network_stats(entries);
268	+	}
269	+
270	+	/* Resize the results array to match the previous stats. */
271	+	diff = network_stat_malloc(interfaces, &diff_count, diff);
272	+	if (diff == NULL) {
273	+	return NULL;
274	+	}
275	+
276	+	/* Copy the previous stats into the result. */
277	+	for (i = 0; i < diff_count; i++) {
278	+	src = &network_stats[i];
279	+	dest = &diff[i];
280	+
281	+	if (dest->interface_name != NULL) {
282	+	free(dest->interface_name);
283	+	}
284	+	dest->interface_name = strdup(src->interface_name);
285	+	dest->rx = src->rx;
286	+	dest->tx = src->tx;
287	+	dest->systime = src->systime;
288	+	}
289	+
290	+	/* Get a new set of stats. */
291	+	if (get_network_stats(&new_count) == NULL) {
292	+	return NULL;
293	+	}
294	+
295	+	/* For each previous stat... */
296	+	for (i = 0; i < diff_count; i++) {
297	+	dest = &diff[i];
298	+
299	+	/* ... find the corresponding new stat ... */
300	+	for (j = 0; j < new_count; j++) {
301	+	/* Try the new stat in the same position first,
302	+	since that's most likely to be it. */
303	+	src = &network_stats[(i + j) % new_count];
304	+	if (strcmp(src->interface_name, dest->interface_name) == 0) {
305	+	break;
306	+	}
307	+	}
308	+	if (j == new_count) {
309	+	/* No match found. */
310	+	continue;
311	+	}
312	+
313	+	/* ... and subtract the previous stat from it to get the
314	+	difference. */
315	+	dest->rx = transfer_diff(src->rx, dest->rx);
316	+	dest->tx = transfer_diff(src->tx, dest->tx);
317	+	dest->systime = src->systime - dest->systime;
318	+	}
319	+
320	+	*entries = diff_count;
321	+	return diff;
322	+	}
323	+	/* NETWORK INTERFACE STATS */
324	+
325	+	void network_iface_stat_init(int start, int end, network_iface_stat_t *net_stats){
326	+
327	+	for(net_stats+=start; start<end; start++){
328	+	net_stats->interface_name=NULL;
329	+	net_stats->speed=0;
330	+	net_stats->dup=NO_DUPLEX;
331	+	net_stats++;
332	+	}
333	+	}
334	+
335	+	network_iface_stat_t *network_iface_stat_malloc(int needed_entries, int *cur_entries, network_iface_stat_t *net_stats){
336	+
337	+	if(net_stats==NULL){
338	+
339	+	if((net_stats=malloc(needed_entries * sizeof(network_iface_stat_t)))==NULL){
340	+	return NULL;
341	+	}
342	+	network_iface_stat_init(0, needed_entries, net_stats);
343	+	*cur_entries=needed_entries;
344	+
345	+	return net_stats;
346	+	}
347	+
348	+
349	+	if(*cur_entries<needed_entries){
350	+	net_stats=realloc(net_stats, (sizeof(network_iface_stat_t)*needed_entries));
351	+	if(net_stats==NULL){
352	+	return NULL;
353	+	}
354	+	network_iface_stat_init(*cur_entries, needed_entries, net_stats);
355	+	*cur_entries=needed_entries;
356	+	}
357	+
358	+	return net_stats;
359	+	}
360	+
361	+	network_iface_stat_t *get_network_iface_stats(int *entries){
362	+	static network_iface_stat_t *network_iface_stats;
363	+	network_iface_stat_t *network_iface_stat_ptr;
364	+	static int sizeof_network_iface_stats=0;
365	+	static int ifaces;
366	+
367	+	#ifdef SOLARIS
368	+	kstat_ctl_t *kc;
369	+	kstat_t *ksp;
370	+	kstat_named_t *knp;
371	+	#endif
372	+	#ifdef ALLBSD
373	+	struct ifaddrs *net, *net_ptr;
374	+	struct ifmediareq ifmed;
375	+	int s;
376	+	int x;
377	+	#endif
378	+
379	+	ifaces = 0;
380	+	#ifdef ALLBSD
381	+	if(getifaddrs(&net) != 0){
382	+	return NULL;
383	+	}
384	+
385	+	if ((s = socket(AF_INET, SOCK_DGRAM, 0)) == NULL) return NULL;
386	+
387	+	for(net_ptr=net; net_ptr!=NULL; net_ptr=net_ptr->ifa_next){
388	+	if(net_ptr->ifa_addr->sa_family != AF_LINK) continue;
389	+	network_iface_stats=network_iface_stat_malloc((ifaces+1), &sizeof_network_iface_stats, network_iface_stats);
390	+	if(network_iface_stats==NULL){
391	+	return NULL;
392	+	}
393	+	network_iface_stat_ptr = network_iface_stats + ifaces;
394	+
395	+	memset(&ifmed, 0, sizeof(struct ifmediareq));
396	+	strlcpy(ifmed.ifm_name, net_ptr->ifa_name, sizeof(ifmed.ifm_name));
397	+	if(ioctl(s, SIOCGIFMEDIA, (caddr_t)&ifmed) == -1){
398	+	continue;
399	+	}
400	+
401	+	/* We may need to change this if we start doing wireless devices too */
402	+	if( (ifmed.ifm_active | IFM_ETHER) != ifmed.ifm_active ){
403	+	/* Not a ETHER device */
404	+	continue;
405	+	}
406	+
407	+	if(network_iface_stat_ptr->interface_name != NULL) free(network_iface_stat_ptr->interface_name);
408	+	network_iface_stat_ptr->interface_name = strdup(net_ptr->ifa_name);
409	+	if(network_iface_stat_ptr->interface_name == NULL) return NULL;
410	+
411	+	/* Only intrested in the first 4 bits)  - Assuming only ETHER devices */
412	+	x = ifmed.ifm_active & 0x0f;
413	+	switch(x){
414	+	/* 10 Mbit connections. Speedy :) */
415	+	case(IFM_10_T):
416	+	case(IFM_10_2):
417	+	case(IFM_10_5):
418	+	case(IFM_10_STP):
419	+	case(IFM_10_FL):
420	+	network_iface_stat_ptr->speed = 10;
421	+	break;
422	+	/* 100 Mbit conneections */
423	+	case(IFM_100_TX):
424	+	case(IFM_100_FX):
425	+	case(IFM_100_T4):
426	+	case(IFM_100_VG):
427	+	case(IFM_100_T2):
428	+	network_iface_stat_ptr->speed = 100;
429	+	break;
430	+	/* 1000 Mbit connections */
431	+	case(IFM_1000_SX):
432	+	case(IFM_1000_LX):
433	+	case(IFM_1000_CX):
434	+	case(IFM_1000_TX):
435	+	network_iface_stat_ptr->speed = 1000;
436	+	break;
437	+	/* We don't know what it is */
438	+	default:
439	+	network_iface_stat_ptr->speed = 0;
440	+	break;
441	+	}
442	+
443	+	if( (ifmed.ifm_active | IFM_FDX) == ifmed.ifm_active ){
444	+	network_iface_stat_ptr->dup = FULL_DUPLEX;
445	+	}else if( (ifmed.ifm_active | IFM_HDX) == ifmed.ifm_active ){
446	+	network_iface_stat_ptr->dup = HALF_DUPLEX;
447	+	}else{
448	+	network_iface_stat_ptr->dup = NO_DUPLEX;
449	+	}
450	+	ifaces++;
451	+	}
452	+	freeifaddrs(net);
453	+	#endif
454	+
455	+	#ifdef SOLARIS
456	+	if ((kc = kstat_open()) == NULL) {
457	+	return NULL;
458	+	}
459	+
460	+	for (ksp = kc->kc_chain; ksp; ksp = ksp->ks_next) {
461	+	if (!strcmp(ksp->ks_class, "net")) {
462	+	kstat_read(kc, ksp, NULL);
463	+	if((knp=kstat_data_lookup(ksp, "ifspeed"))==NULL){
464	+	/* Not a network interface, so skip to the next entry */
465	+	continue;
466	+	}
467	+	network_iface_stats=network_iface_stat_malloc((ifaces+1), &sizeof_network_iface_stats, network_iface_stats);
468	+	if(network_iface_stats==NULL){
469	+	return NULL;
470	+	}
471	+	network_iface_stat_ptr = network_iface_stats + ifaces;
472	+	network_iface_stat_ptr->speed = knp->value.ui64 / (1000*1000);
473	+
474	+	if((knp=kstat_data_lookup(ksp, "link_duplex"))==NULL){
475	+	/* Not a network interface, so skip to the next entry */
476	+	continue;
477	+	}
478	+
479	+	if(knp->value.ui64 == 0){
480	+	network_iface_stat_ptr->dup = FULL_DUPLEX;
481	+	}else{
482	+	network_iface_stat_ptr->dup = HALF_DUPLEX;
483	+	}
484	+
485	+	if(network_iface_stat_ptr->interface_name != NULL) free(network_iface_stat_ptr->interface_name);
486	+	network_iface_stat_ptr->interface_name = strdup(ksp->ks_name);
487	+	if(network_iface_stat_ptr->interface_name == NULL) return NULL;
488	+	ifaces++;
489	+	}
490	+	}
491	+	kstat_close(kc);
492	+
493	+	#endif
494	+	*entries = ifaces;
495	+	return network_iface_stats;
496		}
497

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