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Comparing projects/libstatgrab/src/libstatgrab/network_stats.c (file contents):
Revision 1.1 by pajs, Tue Feb 18 19:28:30 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>
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	+	#endif
48
49	<	#define START_VAL 1
49	>	static network_stat_t *network_stats=NULL;
50	>	static int interfaces=0;
51
52	<	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;
52	>	void network_stat_init(int start, int end, network_stat_t *net_stats){
53
54	<	if(*wmark==-1){
55	<	printf("new malloc\n");
56	<	if((net_stats=malloc(START_VAL * sizeof(network_stat_t)))==NULL){
54	>	for(net_stats+=start; start<end; start++){
55	>	net_stats->interface_name=NULL;
56	>	net_stats->tx=0;
57	>	net_stats->rx=0;
58	>	net_stats++;
59	>	}
60	>	}
61	>
62	>	network_stat_t *network_stat_malloc(int needed_entries, int *cur_entries, network_stat_t *net_stats){
63	>
64	>	if(net_stats==NULL){
65	>
66	>	if((net_stats=malloc(needed_entries * sizeof(network_stat_t)))==NULL){
67		return NULL;
68		}
69	<	*wmark=START_VAL;
70	<	net_stats_ptr=net_stats;
71	<	for(x=0;x<(*wmark);x++){
48	<	net_stats_ptr->interface_name=NULL;
49	<	net_stats_ptr++;
50	<	}
69	>	network_stat_init(0, needed_entries, net_stats);
70	>	*cur_entries=needed_entries;
71	>
72		return net_stats;
73		}
74	<	if(num_iface>(*wmark-1)){
75	<	if((net_stats=realloc(net_stats, (*wmark)*2 * sizeof(network_stat_t)))==NULL){
74	>
75	>
76	>	if(*cur_entries<needed_entries){
77	>	net_stats=realloc(net_stats, (sizeof(network_stat_t)*needed_entries));
78	>	if(net_stats==NULL){
79		return NULL;
80		}
81	<
82	<	*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;
81	>	network_stat_init(*cur_entries, needed_entries, net_stats);
82	>	*cur_entries=needed_entries;
83		}
84
85		return net_stats;
86		}
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	+	#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	<	int interfaces=0;
120	<	network_stat_t *network_stat_ptr;
121	<	static network_stat_t *network_stats=NULL;
122	<	static int watermark=-1;
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;
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		}
164	<	network_stats=network_stat_init(interfaces, &watermark, network_stats);
164	>
165	>	network_stats=network_stat_malloc((interfaces+1), &sizeof_network_stats, network_stats);
166		if(network_stats==NULL){
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		}
180		network_stat_ptr->interface_name=strdup(ksp->ks_name);
181	+
182	+	network_stat_ptr->systime=time(NULL);
183		interfaces++;
184		}
185		}
186	<
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	+	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	+	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	+	/* 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	+	/* 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	+	if (dest->interface_name != NULL) {
280	+	free(dest->interface_name);
281	+	}
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	+	/* Get a new set of stats. */
289	+	if (get_network_stats(&new_count) == NULL) {
290	+	return NULL;
291	+	}
292	+
293	+	/* For each previous stat... */
294	+	for (i = 0; i < diff_count; i++) {
295	+	dest = &diff[i];
296	+
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	+	/* ... 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	+	return net_stats;
344	+	}
345	+
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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