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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 1.4 by tdb, Fri Feb 28 22:59:35 2003 UTC vs.
Revision 1.80 by tdb, Mon Oct 9 17:25:06 2006 UTC

#	Line 1 | Line 1
1	<	/*
2	<	* i-scream central monitoring system
3	<	* http://www.i-scream.org.uk
4	<	* Copyright (C) 2000-2002 i-scream
1	>	/*
2	>	* i-scream libstatgrab
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 "vector.h"
32	+	#include "tools.h"
33	+	#include <time.h>
34		#ifdef SOLARIS
35		#include <kstat.h>
36		#include <sys/sysinfo.h>
37	<	#include <string.h>
37	>	#include <sys/types.h>
38	>	#include <sys/socket.h>
39	>	#include <sys/ioctl.h>
40	>	#include <net/if.h>
41	>	#include <netinet/in.h>
42	>	#include <sys/sockio.h>
43	>	#include <unistd.h>
44		#endif
45	+	#ifdef LINUX
46	+	#include <stdio.h>
47	+	#include <sys/types.h>
48	+	#include <sys/ioctl.h>
49	+	#include <sys/socket.h>
50	+	#include <net/if.h>
51	+	#include <ctype.h>
52	+	#include <linux/version.h>
53	+	#include <asm/types.h>
54	+	/* These aren't defined by asm/types.h unless the kernel is being
55	+	compiled, but some versions of ethtool.h need them. */
56	+	typedef __uint8_t u8;
57	+	typedef __uint16_t u16;
58	+	typedef __uint32_t u32;
59	+	typedef __uint64_t u64;
60	+	#include <linux/ethtool.h>
61	+	#include <linux/sockios.h>
62	+	#include <unistd.h>
63	+	#endif
64	+	#ifdef ALLBSD
65	+	#include <sys/types.h>
66	+	#include <sys/socket.h>
67	+	#include <ifaddrs.h>
68	+	#include <net/if.h>
69	+	#include <net/if_media.h>
70	+	#include <sys/ioctl.h>
71	+	#include <unistd.h>
72	+	#endif
73	+	#ifdef WIN32
74	+	#include <windows.h>
75	+	#include <Iphlpapi.h>
76	+	#include "win32.h"
77	+	#endif
78
79	<	static network_stat_t *network_stats=NULL;
80	<	static int interfaces=0;
79	>	static void network_stat_init(sg_network_io_stats *s) {
80	>	s->interface_name = NULL;
81	>	s->tx = 0;
82	>	s->rx = 0;
83	>	s->ipackets = 0;
84	>	s->opackets = 0;
85	>	s->ierrors = 0;
86	>	s->oerrors = 0;
87	>	s->collisions = 0;
88	>	}
89
90	<	void network_stat_init(int start, int end, network_stat_t *net_stats){
91	<
39	<	for(net_stats+=start; start<end; start++){
40	<	net_stats->interface_name=NULL;
41	<	net_stats->tx=0;
42	<	net_stats->rx=0;
43	<	net_stats++;
44	<	}
90	>	static void network_stat_destroy(sg_network_io_stats *s) {
91	>	free(s->interface_name);
92		}
93
94	<	network_stat_t *network_stat_malloc(int needed_entries, int *cur_entries, network_stat_t *net_stats){
94	>	VECTOR_DECLARE_STATIC(network_stats, sg_network_io_stats, 5,
95	>	network_stat_init, network_stat_destroy);
96
97	<	if(net_stats==NULL){
97	>	#ifdef WIN32
98	>	static PMIB_IFTABLE win32_get_devices()
99	>	{
100	>	PMIB_IFTABLE if_table;
101	>	PMIB_IFTABLE tmp;
102	>	unsigned long dwSize = 0;
103
104	<	if((net_stats=malloc(needed_entries * sizeof(network_stat_t)))==NULL){
105	<	return NULL;
106	<	}
107	<	network_stat_init(0, needed_entries, net_stats);
55	<	*cur_entries=needed_entries;
56	<
57	<	return net_stats;
104	>	// Allocate memory for pointers
105	>	if_table = sg_malloc(sizeof(MIB_IFTABLE));
106	>	if(if_table == NULL) {
107	>	return NULL;
108		}
109
110	<
111	<	if(*cur_entries<needed_entries){
112	<	net_stats=realloc(net_stats, (sizeof(network_stat_t)*needed_entries));
113	<	if(net_stats==NULL){
110	>	// Get necessary size for the buffer
111	>	if(GetIfTable(if_table, &dwSize, 0) == ERROR_INSUFFICIENT_BUFFER) {
112	>	tmp = sg_realloc(if_table, dwSize);
113	>	if(tmp == NULL) {
114	>	free(if_table);
115		return NULL;
116		}
117	<	network_stat_init(*cur_entries, needed_entries, net_stats);
67	<	*cur_entries=needed_entries;
117	>	if_table = tmp;
118		}
119
120	<	return net_stats;
120	>	// Get the data
121	>	if(GetIfTable(if_table, &dwSize, 0) != NO_ERROR) {
122	>	free(if_table);
123	>	return NULL;
124	>	}
125	>	return if_table;
126		}
127	+	#endif /* WIN32 */
128
129	+	sg_network_io_stats *sg_get_network_io_stats(int *entries){
130	+	int interfaces;
131	+	sg_network_io_stats *network_stat_ptr;
132
133	<	network_stat_t *get_network_stats(int *entries){
134	<	kstat_ctl_t *kc;
135	<	kstat_t *ksp;
133	>	#ifdef SOLARIS
134	>	kstat_ctl_t *kc;
135	>	kstat_t *ksp;
136		kstat_named_t *knp;
137	+	#endif
138
139	<	static int sizeof_network_stats=0;
139	>	#ifdef LINUX
140	>	FILE *f;
141	>	/* Horrible big enough, but it should be easily big enough */
142	>	char line[8096];
143	>	regex_t regex;
144	>	regmatch_t line_match[9];
145	>	#endif
146	>	#ifdef ALLBSD
147	>	struct ifaddrs *net, *net_ptr;
148	>	struct if_data *net_data;
149	>	#endif
150	>	#ifdef WIN32
151	>	PMIB_IFTABLE if_table;
152	>	MIB_IFROW if_row;
153	>	int i, no, j;
154	>
155	>	/* used for duplicate interface names. 5 for space, hash, up to two
156	>	* numbers and terminating slash */
157	>	char buf[5];
158	>	#endif
159	>
160	>	#ifdef ALLBSD
161	>	if(getifaddrs(&net) != 0){
162	>	sg_set_error_with_errno(SG_ERROR_GETIFADDRS, NULL);
163	>	return NULL;
164	>	}
165	>
166	>	interfaces=0;
167
168	<	network_stat_t *network_stat_ptr;
168	>	for(net_ptr=net;net_ptr!=NULL;net_ptr=net_ptr->ifa_next){
169	>	if(net_ptr->ifa_addr->sa_family != AF_LINK) continue;
170
171	<	if ((kc = kstat_open()) == NULL) {
172	<	return NULL;
173	<	}
171	>	if (VECTOR_RESIZE(network_stats, interfaces + 1) < 0) {
172	>	return NULL;
173	>	}
174	>	network_stat_ptr=network_stats+interfaces;
175	>
176	>	if (sg_update_string(&network_stat_ptr->interface_name,
177	>	net_ptr->ifa_name) < 0) {
178	>	return NULL;
179	>	}
180	>	net_data=(struct if_data *)net_ptr->ifa_data;
181	>	network_stat_ptr->rx=net_data->ifi_ibytes;
182	>	network_stat_ptr->tx=net_data->ifi_obytes;
183	>	network_stat_ptr->ipackets=net_data->ifi_ipackets;
184	>	network_stat_ptr->opackets=net_data->ifi_opackets;
185	>	network_stat_ptr->ierrors=net_data->ifi_ierrors;
186	>	network_stat_ptr->oerrors=net_data->ifi_oerrors;
187	>	network_stat_ptr->collisions=net_data->ifi_collisions;
188	>	network_stat_ptr->systime=time(NULL);
189	>	interfaces++;
190	>	}
191	>	freeifaddrs(net);
192	>	#endif
193
194	<	interfaces=0;
194	>	#ifdef SOLARIS
195	>	if ((kc = kstat_open()) == NULL) {
196	>	sg_set_error(SG_ERROR_KSTAT_OPEN, NULL);
197	>	return NULL;
198	>	}
199
200	<	for (ksp = kc->kc_chain; ksp; ksp = ksp->ks_next) {
90	<	if (!strcmp(ksp->ks_class, "net")) {
91	<	kstat_read(kc, ksp, NULL);
200	>	interfaces=0;
201
202	<	if((knp=kstat_data_lookup(ksp, "rbytes64"))==NULL){
203	<	/* Not a network interface, so skip to the next entry */
202	>	for (ksp = kc->kc_chain; ksp; ksp = ksp->ks_next) {
203	>	if (strcmp(ksp->ks_class, "net") == 0) {
204	>	kstat_read(kc, ksp, NULL);
205	>
206	>	#ifdef SOL7
207	>	#define LRX "rbytes"
208	>	#define LTX "obytes"
209	>	#define LIPACKETS "ipackets"
210	>	#define LOPACKETS "opackets"
211	>	#define VALTYPE value.ui32
212	>	#else
213	>	#define LRX "rbytes64"
214	>	#define LTX "obytes64"
215	>	#define LIPACKETS "ipackets64"
216	>	#define LOPACKETS "opackets64"
217	>	#define VALTYPE value.ui64
218	>	#endif
219	>
220	>	/* Read rx */
221	>	if((knp=kstat_data_lookup(ksp, LRX))==NULL){
222	>	/* This is a network interface, but it doesn't
223	>	* have the rbytes/obytes values; for instance,
224	>	* the loopback devices have this behaviour
225	>	* (although they do track packets in/out). */
226	>	/* FIXME: Show packet counts when byte counts
227	>	* not available. */
228		continue;
229		}
230
231	<	network_stats=network_stat_malloc((interfaces+1), &sizeof_network_stats, network_stats);
232	<	if(network_stats==NULL){
231	>	/* Create new network_stats */
232	>	if (VECTOR_RESIZE(network_stats, interfaces + 1) < 0) {
233	>	kstat_close(kc);
234		return NULL;
235		}
236		network_stat_ptr=network_stats+interfaces;
103	–	network_stat_ptr->rx=knp->value.ui64;
237
238	<	if((knp=kstat_data_lookup(ksp, "obytes64"))==NULL){
239	<	/* Not a network interface, so skip to the next entry */
238	>	/* Read interface name */
239	>	if (sg_update_string(&network_stat_ptr->interface_name,
240	>	ksp->ks_name) < 0) {
241	>	kstat_close(kc);
242	>	return NULL;
243	>	}
244	>
245	>	/* Finish reading rx */
246	>	network_stat_ptr->rx=knp->VALTYPE;
247	>
248	>	/* Read tx */
249	>	if((knp=kstat_data_lookup(ksp, LTX))==NULL){
250		continue;
251		}
252	<	network_stat_ptr->tx=knp->value.ui64;
253	<	if(network_stat_ptr->interface_name!=NULL){
254	<	free(network_stat_ptr->interface_name);
252	>	network_stat_ptr->tx=knp->VALTYPE;
253	>
254	>	/* Read ipackets */
255	>	if((knp=kstat_data_lookup(ksp, LIPACKETS))==NULL){
256	>	continue;
257		}
258	<	network_stat_ptr->interface_name=strdup(ksp->ks_name);
258	>	network_stat_ptr->ipackets=knp->VALTYPE;
259
260	+	/* Read opackets */
261	+	if((knp=kstat_data_lookup(ksp, LOPACKETS))==NULL){
262	+	continue;
263	+	}
264	+	network_stat_ptr->opackets=knp->VALTYPE;
265	+
266	+	/* Read ierrors */
267	+	if((knp=kstat_data_lookup(ksp, "ierrors"))==NULL){
268	+	continue;
269	+	}
270	+	network_stat_ptr->ierrors=knp->value.ui32;
271	+
272	+	/* Read oerrors */
273	+	if((knp=kstat_data_lookup(ksp, "oerrors"))==NULL){
274	+	continue;
275	+	}
276	+	network_stat_ptr->oerrors=knp->value.ui32;
277	+
278	+	/* Read collisions */
279	+	if((knp=kstat_data_lookup(ksp, "collisions"))==NULL){
280	+	continue;
281	+	}
282	+	network_stat_ptr->collisions=knp->value.ui32;
283	+
284	+
285	+	/* Store systime */
286		network_stat_ptr->systime=time(NULL);
287	+
288		interfaces++;
289		}
290		}
291
292		kstat_close(kc);
293	+	#endif
294	+	#ifdef LINUX
295	+	f=fopen("/proc/net/dev", "r");
296	+	if(f==NULL){
297	+	sg_set_error_with_errno(SG_ERROR_OPEN, "/proc/net/dev");
298	+	return NULL;
299	+	}
300	+	/* read the 2 lines.. Its the title, so we dont care :) */
301	+	fgets(line, sizeof(line), f);
302	+	fgets(line, sizeof(line), f);
303
304	+
305	+	if((regcomp(&regex, "^ *([^:]+): *([0-9]+) +([0-9]+) +([0-9]+) +[0-9]+ +[0-9]+ +[0-9]+ +[0-9]+ +[0-9]+ +([0-9]+) +([0-9]+) +([0-9]+) +[0-9]+ +[0-9]+ +([0-9]+)", REG_EXTENDED))!=0){
306	+	sg_set_error(SG_ERROR_PARSE, NULL);
307	+	return NULL;
308	+	}
309	+
310	+	interfaces=0;
311	+
312	+	while((fgets(line, sizeof(line), f)) != NULL){
313	+	if((regexec(&regex, line, 9, line_match, 0))!=0){
314	+	continue;
315	+	}
316	+
317	+	if (VECTOR_RESIZE(network_stats, interfaces + 1) < 0) {
318	+	return NULL;
319	+	}
320	+	network_stat_ptr=network_stats+interfaces;
321	+
322	+	if(network_stat_ptr->interface_name!=NULL){
323	+	free(network_stat_ptr->interface_name);
324	+	}
325	+
326	+	network_stat_ptr->interface_name=sg_get_string_match(line, &line_match[1]);
327	+	network_stat_ptr->rx=sg_get_ll_match(line, &line_match[2]);
328	+	network_stat_ptr->tx=sg_get_ll_match(line, &line_match[5]);
329	+	network_stat_ptr->ipackets=sg_get_ll_match(line, &line_match[3]);
330	+	network_stat_ptr->opackets=sg_get_ll_match(line, &line_match[6]);
331	+	network_stat_ptr->ierrors=sg_get_ll_match(line, &line_match[4]);
332	+	network_stat_ptr->oerrors=sg_get_ll_match(line, &line_match[7]);
333	+	network_stat_ptr->collisions=sg_get_ll_match(line, &line_match[8]);
334	+	network_stat_ptr->systime=time(NULL);
335	+
336	+	interfaces++;
337	+	}
338	+	fclose(f);
339	+	regfree(&regex);
340	+
341	+	#endif
342	+
343	+	#ifdef CYGWIN
344	+	sg_set_error(SG_ERROR_UNSUPPORTED, "Cygwin");
345	+	return NULL;
346	+	#endif
347	+	#ifdef HPUX
348	+	sg_set_error(SG_ERROR_UNSUPPORTED, "HP-UX");
349	+	return NULL;
350	+	#endif
351	+
352	+	#ifdef WIN32
353	+	interfaces = 0;
354	+
355	+	if((if_table = win32_get_devices()) == NULL) {
356	+	sg_set_error(SG_ERROR_DEVICES, "network");
357	+	return NULL;
358	+	}
359	+
360	+	if(VECTOR_RESIZE(network_stats, if_table->dwNumEntries) < 0) {
361	+	free(if_table);
362	+	return NULL;
363	+	}
364	+
365	+	for (i=0; i<if_table->dwNumEntries; i++) {
366	+	network_stat_ptr=network_stats+i;
367	+	if_row = if_table->table[i];
368	+
369	+	if(sg_update_string(&network_stat_ptr->interface_name,
370	+	if_row.bDescr) < 0) {
371	+	free(if_table);
372	+	return NULL;
373	+	}
374	+	network_stat_ptr->tx = if_row.dwOutOctets;
375	+	network_stat_ptr->rx = if_row.dwInOctets;
376	+	network_stat_ptr->ipackets = if_row.dwInUcastPkts + if_row.dwInNUcastPkts;
377	+	network_stat_ptr->opackets = if_row.dwOutUcastPkts + if_row.dwOutNUcastPkts;
378	+	network_stat_ptr->ierrors = if_row.dwInErrors;
379	+	network_stat_ptr->oerrors = if_row.dwOutErrors;
380	+	network_stat_ptr->collisions = 0; /* can't do that */
381	+	network_stat_ptr->systime = time(NULL);
382	+
383	+	interfaces++;
384	+	}
385	+	free(if_table);
386	+
387	+	/* Please say there's a nicer way to do this...  If windows has two (or
388	+	* more) identical network cards, GetIfTable returns them with the same
389	+	* name, not like in Device Manager where the other has a #2 etc after
390	+	* it. So, add the #number here. Should we be doing this? Or should the
391	+	* end programs be dealing with duplicate names? Currently breaks
392	+	* watch.pl in rrdgraphing. But Unix does not have the issue of
393	+	* duplicate net device names.
394	+	*/
395	+	for (i=0; i<interfaces; i++) {
396	+	no = 2;
397	+	for(j=i+1; j<interfaces; j++) {
398	+	network_stat_ptr=network_stats+j;
399	+	if(strcmp(network_stats[i].interface_name,
400	+	network_stat_ptr->interface_name) == 0) {
401	+	if(snprintf(buf, sizeof(buf), " #%d", no) < 0) {
402	+	break;
403	+	}
404	+	if(sg_concat_string(&network_stat_ptr->interface_name, buf) != 0) {
405	+	return NULL;
406	+	}
407	+
408	+	no++;
409	+	}
410	+	}
411	+	}
412	+	#endif
413	+
414		*entries=interfaces;
415
416		return network_stats;
417		}
418
419	<	network_stat_t *get_network_stats_diff(int *entries){
420	<	static network_stat_t *network_stats_diff=NULL;
421	<	static int sizeof_net_stats_diff=0;
422	<	network_stat_t *network_stats_ptr, *network_stats_diff_ptr;
423	<	int ifaces, x, y;
419	>	static long long transfer_diff(long long new, long long old){
420	>	#if defined(SOL7) || defined(LINUX) || defined(FREEBSD) || defined(DFBSD) || defined(OPENBSD) || defined(WIN32)
421	>	/* 32-bit quantities, so we must explicitly deal with wraparound. */
422	>	#define MAXVAL 0x100000000LL
423	>	if (new >= old) {
424	>	return new - old;
425	>	} else {
426	>	return MAXVAL + new - old;
427	>	}
428	>	#else
429	>	/* 64-bit quantities, so plain subtraction works. */
430	>	return new - old;
431	>	#endif
432	>	}
433
434	<	if(network_stats==NULL){
435	<	network_stats_ptr=get_network_stats(&ifaces);
436	<	*entries=ifaces;
437	<	return network_stats_ptr;
434	>	sg_network_io_stats *sg_get_network_io_stats_diff(int *entries) {
435	>	VECTOR_DECLARE_STATIC(diff, sg_network_io_stats, 1,
436	>	network_stat_init, network_stat_destroy);
437	>	sg_network_io_stats *src = NULL, *dest;
438	>	int i, j, diff_count, new_count;
439	>
440	>	if (network_stats == NULL) {
441	>	/* No previous stats, so we can't calculate a difference. */
442	>	return sg_get_network_io_stats(entries);
443		}
444
445	<	network_stats_diff=network_stat_malloc(interfaces, &sizeof_net_stats_diff, network_stats_diff);
446	<	if(network_stats_diff==NULL){
445	>	/* Resize the results array to match the previous stats. */
446	>	diff_count = VECTOR_SIZE(network_stats);
447	>	if (VECTOR_RESIZE(diff, diff_count) < 0) {
448		return NULL;
449		}
450
451	<	network_stats_ptr=network_stats;
452	<	network_stats_diff_ptr=network_stats_diff;
451	>	/* Copy the previous stats into the result. */
452	>	for (i = 0; i < diff_count; i++) {
453	>	src = &network_stats[i];
454	>	dest = &diff[i];
455
456	<	for(ifaces=0;ifaces<interfaces;ifaces++){
457	<	if(network_stats_diff_ptr->interface_name!=NULL){
458	<	free(network_stats_diff_ptr->interface_name);
456	>	if (sg_update_string(&dest->interface_name,
457	>	src->interface_name) < 0) {
458	>	return NULL;
459		}
460	<	network_stats_diff_ptr->interface_name=strdup(network_stats_ptr->interface_name);
461	<	network_stats_diff_ptr->tx=network_stats_ptr->tx;
462	<	network_stats_diff_ptr->rx=network_stats_ptr->rx;
463	<	network_stats_diff_ptr->systime=network_stats->systime;
460	>	dest->rx = src->rx;
461	>	dest->tx = src->tx;
462	>	dest->ipackets = src->ipackets;
463	>	dest->opackets = src->opackets;
464	>	dest->ierrors = src->ierrors;
465	>	dest->oerrors = src->oerrors;
466	>	dest->collisions = src->collisions;
467	>	dest->systime = src->systime;
468	>	}
469
470	<	network_stats_ptr++;
471	<	network_stats_diff_ptr++;
470	>	/* Get a new set of stats. */
471	>	if (sg_get_network_io_stats(&new_count) == NULL) {
472	>	return NULL;
473		}
159	–	network_stats_ptr=get_network_stats(&ifaces);
160	–	network_stats_diff_ptr=network_stats_diff;
474
475	<	for(x=0;x<sizeof_net_stats_diff;x++){
475	>	/* For each previous stat... */
476	>	for (i = 0; i < diff_count; i++) {
477	>	dest = &diff[i];
478
479	<	if((strcmp(network_stats_diff_ptr->interface_name, network_stats_ptr->interface_name))==0){
480	<	network_stats_diff_ptr->tx = network_stats_ptr->tx - network_stats_diff_ptr->tx;
481	<	network_stats_diff_ptr->rx = network_stats_ptr->rx - network_stats_diff_ptr->rx;
482	<	network_stats_diff_ptr->systime = network_stats_ptr->systime - network_stats_diff_ptr->systime;
479	>	/* ... find the corresponding new stat ... */
480	>	for (j = 0; j < new_count; j++) {
481	>	/* Try the new stat in the same position first,
482	>	since that's most likely to be it. */
483	>	src = &network_stats[(i + j) % new_count];
484	>	if (strcmp(src->interface_name, dest->interface_name) == 0) {
485	>	break;
486	>	}
487	>	}
488	>	if (j == new_count) {
489	>	/* No match found. */
490	>	continue;
491	>	}
492	>
493	>	/* ... and subtract the previous stat from it to get the
494	>	difference. */
495	>	dest->rx = transfer_diff(src->rx, dest->rx);
496	>	dest->tx = transfer_diff(src->tx, dest->tx);
497	>	dest->ipackets = transfer_diff(src->ipackets, dest->ipackets);
498	>	dest->opackets = transfer_diff(src->opackets, dest->opackets);
499	>	dest->ierrors = transfer_diff(src->ierrors, dest->ierrors);
500	>	dest->oerrors = transfer_diff(src->oerrors, dest->oerrors);
501	>	dest->collisions = transfer_diff(src->collisions, dest->collisions);
502	>	dest->systime = src->systime - dest->systime;
503	>	}
504	>
505	>	*entries = diff_count;
506	>	return diff;
507	>	}
508	>
509	>	int sg_network_io_compare_name(const void *va, const void *vb) {
510	>	const sg_network_io_stats *a = (const sg_network_io_stats *)va;
511	>	const sg_network_io_stats *b = (const sg_network_io_stats *)vb;
512	>
513	>	return strcmp(a->interface_name, b->interface_name);
514	>	}
515	>
516	>	/* NETWORK INTERFACE STATS */
517	>
518	>	static void network_iface_stat_init(sg_network_iface_stats *s) {
519	>	s->interface_name = NULL;
520	>	s->speed = 0;
521	>	s->duplex = SG_IFACE_DUPLEX_UNKNOWN;
522	>	}
523	>
524	>	static void network_iface_stat_destroy(sg_network_iface_stats *s) {
525	>	free(s->interface_name);
526	>	}
527	>
528	>	sg_network_iface_stats *sg_get_network_iface_stats(int *entries){
529	>	VECTOR_DECLARE_STATIC(network_iface_stats, sg_network_iface_stats, 5,
530	>	network_iface_stat_init, network_iface_stat_destroy);
531	>	sg_network_iface_stats *network_iface_stat_ptr;
532	>	int ifaces = 0;
533	>
534	>	#ifdef SOLARIS
535	>	kstat_ctl_t *kc;
536	>	kstat_t *ksp;
537	>	kstat_named_t *knp;
538	>	int sock;
539	>	#endif
540	>	#ifdef ALLBSD
541	>	struct ifaddrs *net, *net_ptr;
542	>	struct ifmediareq ifmed;
543	>	struct ifreq ifr;
544	>	int sock;
545	>	int x;
546	>	#endif
547	>	#ifdef LINUX
548	>	FILE *f;
549	>	/* Horrible big enough, but it should be easily big enough */
550	>	char line[8096];
551	>	int sock;
552	>	#endif
553	>	#ifdef WIN32
554	>	PMIB_IFTABLE if_table;
555	>	MIB_IFROW if_row;
556	>	int i,j,no;
557	>	char buf[5];
558	>	#endif
559	>
560	>	#ifdef ALLBSD
561	>	if(getifaddrs(&net) != 0){
562	>	sg_set_error_with_errno(SG_ERROR_GETIFADDRS, NULL);
563	>	return NULL;
564	>	}
565	>
566	>	if ((sock = socket(AF_INET, SOCK_DGRAM, 0)) == 0) return NULL;
567	>
568	>	for(net_ptr=net; net_ptr!=NULL; net_ptr=net_ptr->ifa_next){
569	>	if(net_ptr->ifa_addr->sa_family != AF_LINK) continue;
570	>
571	>	if (VECTOR_RESIZE(network_iface_stats, ifaces + 1) < 0) {
572	>	return NULL;
573	>	}
574	>	network_iface_stat_ptr = network_iface_stats + ifaces;
575	>
576	>	memset(&ifr, 0, sizeof(ifr));
577	>	strncpy(ifr.ifr_name, net_ptr->ifa_name, sizeof(ifr.ifr_name));
578	>
579	>	if (ioctl(sock, SIOCGIFFLAGS, &ifr) < 0){
580	>	continue;
581	>	}
582	>	if((ifr.ifr_flags & IFF_UP) != 0){
583	>	network_iface_stat_ptr->up = 1;
584		}else{
585	<
586	<	network_stats_ptr=network_stats;
587	<	for(y=0;y<ifaces;y++){
588	<	if((strcmp(network_stats_diff_ptr->interface_name, network_stats_ptr->interface_name))==0){
589	<	network_stats_diff_ptr->tx = network_stats_ptr->tx - network_stats_diff_ptr->tx;
590	<	network_stats_diff_ptr->rx = network_stats_ptr->rx - network_stats_diff_ptr->rx;
591	<	network_stats_diff_ptr->systime = network_stats_ptr->systime - network_stats_diff_ptr->systime;
585	>	network_iface_stat_ptr->up = 0;
586	>	}
587	>
588	>	if (sg_update_string(&network_iface_stat_ptr->interface_name,
589	>	net_ptr->ifa_name) < 0) {
590	>	return NULL;
591	>	}
592	>
593	>	network_iface_stat_ptr->speed = 0;
594	>	network_iface_stat_ptr->duplex = SG_IFACE_DUPLEX_UNKNOWN;
595	>	ifaces++;
596	>
597	>	memset(&ifmed, 0, sizeof(struct ifmediareq));
598	>	sg_strlcpy(ifmed.ifm_name, net_ptr->ifa_name, sizeof(ifmed.ifm_name));
599	>	if(ioctl(sock, SIOCGIFMEDIA, (caddr_t)&ifmed) == -1){
600	>	/* Not all interfaces support the media ioctls. */
601	>	continue;
602	>	}
603	>
604	>	/* We may need to change this if we start doing wireless devices too */
605	>	if( (ifmed.ifm_active | IFM_ETHER) != ifmed.ifm_active ){
606	>	/* Not a ETHER device */
607	>	continue;
608	>	}
609	>
610	>	/* Only intrested in the first 4 bits)  - Assuming only ETHER devices */
611	>	x = ifmed.ifm_active & 0x0f;
612	>	switch(x){
613	>	/* 10 Mbit connections. Speedy :) */
614	>	case(IFM_10_T):
615	>	case(IFM_10_2):
616	>	case(IFM_10_5):
617	>	case(IFM_10_STP):
618	>	case(IFM_10_FL):
619	>	network_iface_stat_ptr->speed = 10;
620	>	break;
621	>	/* 100 Mbit conneections */
622	>	case(IFM_100_TX):
623	>	case(IFM_100_FX):
624	>	case(IFM_100_T4):
625	>	case(IFM_100_VG):
626	>	case(IFM_100_T2):
627	>	network_iface_stat_ptr->speed = 100;
628	>	break;
629	>	/* 1000 Mbit connections */
630	>	case(IFM_1000_SX):
631	>	case(IFM_1000_LX):
632	>	case(IFM_1000_CX):
633	>	#if defined(IFM_1000_TX) && !defined(OPENBSD)
634	>	case(IFM_1000_TX): /* FreeBSD 4 and others (but NOT OpenBSD)? */
635	>	#endif
636	>	#ifdef IFM_1000_FX
637	>	case(IFM_1000_FX): /* FreeBSD 4 */
638	>	#endif
639	>	#ifdef IFM_1000_T
640	>	case(IFM_1000_T): /* FreeBSD 5 */
641	>	#endif
642	>	network_iface_stat_ptr->speed = 1000;
643	>	break;
644	>	/* We don't know what it is */
645	>	default:
646	>	network_iface_stat_ptr->speed = 0;
647	>	break;
648	>	}
649	>
650	>	if( (ifmed.ifm_active | IFM_FDX) == ifmed.ifm_active ){
651	>	network_iface_stat_ptr->duplex = SG_IFACE_DUPLEX_FULL;
652	>	}else if( (ifmed.ifm_active | IFM_HDX) == ifmed.ifm_active ){
653	>	network_iface_stat_ptr->duplex = SG_IFACE_DUPLEX_HALF;
654	>	}else{
655	>	network_iface_stat_ptr->duplex = SG_IFACE_DUPLEX_UNKNOWN;
656	>	}
657	>
658	>	}
659	>	freeifaddrs(net);
660	>	close(sock);
661	>	#endif
662	>
663	>	#ifdef SOLARIS
664	>	if ((kc = kstat_open()) == NULL) {
665	>	sg_set_error(SG_ERROR_KSTAT_OPEN, NULL);
666	>	return NULL;
667	>	}
668	>
669	>	if ((sock = socket(PF_INET, SOCK_DGRAM, IPPROTO_IP)) < 0) {
670	>	sg_set_error_with_errno(SG_ERROR_SOCKET, NULL);
671	>	kstat_close(kc);
672	>	return NULL;
673	>	}
674	>
675	>	for (ksp = kc->kc_chain; ksp; ksp = ksp->ks_next) {
676	>	if (strcmp(ksp->ks_class, "net") == 0) {
677	>	struct ifreq ifr;
678	>
679	>	kstat_read(kc, ksp, NULL);
680	>
681	>	strncpy(ifr.ifr_name, ksp->ks_name, sizeof ifr.ifr_name);
682	>	if (ioctl(sock, SIOCGIFFLAGS, &ifr) < 0) {
683	>	/* Not a network interface. */
684	>	continue;
685	>	}
686	>
687	>	if (VECTOR_RESIZE(network_iface_stats, ifaces + 1) < 0) {
688	>	kstat_close(kc);
689	>	return NULL;
690	>	}
691	>	network_iface_stat_ptr = network_iface_stats + ifaces;
692	>	ifaces++;
693	>
694	>	if (sg_update_string(&network_iface_stat_ptr->interface_name,
695	>	ksp->ks_name) < 0) {
696	>	kstat_close(kc);
697	>	return NULL;
698	>	}
699	>
700	>	if ((ifr.ifr_flags & IFF_UP) != 0) {
701	>	if ((knp = kstat_data_lookup(ksp, "link_up")) != NULL) {
702	>	/* take in to account if link
703	>	* is up as well as interface */
704	>	if (knp->value.ui32 != 0u) {
705	>	network_iface_stat_ptr->up = 1;
706	>	} else {
707	>	network_iface_stat_ptr->up = 0;
708	>	}
709	>	}
710	>	else {
711	>	/* maintain compatibility */
712	>	network_iface_stat_ptr->up = 1;
713	>	}
714	>	} else {
715	>	network_iface_stat_ptr->up = 0;
716	>	}
717	>
718	>	if ((knp = kstat_data_lookup(ksp, "ifspeed")) != NULL) {
719	>	network_iface_stat_ptr->speed = knp->value.ui64 / (1000 * 1000);
720	>	} else {
721	>	network_iface_stat_ptr->speed = 0;
722	>	}
723	>
724	>	network_iface_stat_ptr->duplex = SG_IFACE_DUPLEX_UNKNOWN;
725	>	if ((knp = kstat_data_lookup(ksp, "link_duplex")) != NULL) {
726	>	switch (knp->value.ui32) {
727	>	case 1:
728	>	network_iface_stat_ptr->duplex = SG_IFACE_DUPLEX_HALF;
729		break;
730	+	case 2:
731	+	network_iface_stat_ptr->duplex = SG_IFACE_DUPLEX_FULL;
732	+	break;
733		}
734	+	}
735	+	}
736	+	}
737
738	<	network_stats_ptr++;
739	<	}
738	>	close(sock);
739	>	kstat_close(kc);
740	>	#endif
741	>	#ifdef LINUX
742	>	f = fopen("/proc/net/dev", "r");
743	>	if(f == NULL){
744	>	sg_set_error_with_errno(SG_ERROR_OPEN, "/proc/net/dev");
745	>	return NULL;
746	>	}
747	>
748	>	/* Setup stuff so we can do the ioctl to get the info */
749	>	if((sock = socket(AF_INET, SOCK_DGRAM, 0)) < 0){
750	>	sg_set_error_with_errno(SG_ERROR_SOCKET, NULL);
751	>	return NULL;
752	>	}
753	>
754	>	/* Ignore first 2 lines.. Just headings */
755	>	if((fgets(line, sizeof(line), f)) == NULL) {
756	>	sg_set_error(SG_ERROR_PARSE, NULL);
757	>	return NULL;
758	>	}
759	>	if((fgets(line, sizeof(line), f)) == NULL) {
760	>	sg_set_error(SG_ERROR_PARSE, NULL);
761	>	return NULL;
762	>	}
763	>
764	>	while((fgets(line, sizeof(line), f)) != NULL){
765	>	char *name, *ptr;
766	>	struct ifreq ifr;
767	>	struct ethtool_cmd ethcmd;
768	>	int err;
769	>
770	>	/* Get the interface name */
771	>	ptr = strchr(line, ':');
772	>	if (ptr == NULL) continue;
773	>	*ptr='\0';
774	>	name = line;
775	>	while(isspace(*(name))){
776	>	name++;
777		}
778
779	<	network_stats_ptr++;
780	<	network_stats_diff_ptr++;
779	>	memset(&ifr, 0, sizeof ifr);
780	>	strncpy(ifr.ifr_name, name, sizeof ifr.ifr_name);
781	>
782	>	if (ioctl(sock, SIOCGIFFLAGS, &ifr) < 0) {
783	>	continue;
784	>	}
785	>
786	>	/* We have a good interface to add */
787	>	if (VECTOR_RESIZE(network_iface_stats, ifaces + 1) < 0) {
788	>	return NULL;
789	>	}
790	>	network_iface_stat_ptr = network_iface_stats + ifaces;
791	>
792	>	if (sg_update_string(&network_iface_stat_ptr->interface_name,
793	>	name) < 0) {
794	>	return NULL;
795	>	}
796	>	if ((ifr.ifr_flags & IFF_UP) != 0) {
797	>	network_iface_stat_ptr->up = 1;
798	>	} else {
799	>	network_iface_stat_ptr->up = 0;
800	>	}
801	>
802	>	memset(&ethcmd, 0, sizeof ethcmd);
803	>	ethcmd.cmd = ETHTOOL_GSET;
804	>	ifr.ifr_data = (caddr_t) &ethcmd;
805	>
806	>	err = ioctl(sock, SIOCETHTOOL, &ifr);
807	>	if (err == 0) {
808	>	network_iface_stat_ptr->speed = ethcmd.speed;
809	>
810	>	switch (ethcmd.duplex) {
811	>	case DUPLEX_FULL:
812	>	network_iface_stat_ptr->duplex = SG_IFACE_DUPLEX_FULL;
813	>	break;
814	>	case DUPLEX_HALF:
815	>	network_iface_stat_ptr->duplex = SG_IFACE_DUPLEX_HALF;
816	>	break;
817	>	default:
818	>	network_iface_stat_ptr->duplex = SG_IFACE_DUPLEX_UNKNOWN;
819	>	}
820	>	} else {
821	>	/* Not all interfaces support the ethtool ioctl. */
822	>	network_iface_stat_ptr->speed = 0;
823	>	network_iface_stat_ptr->duplex = SG_IFACE_DUPLEX_UNKNOWN;
824	>	}
825	>
826	>	ifaces++;
827		}
828	+	close(sock);
829	+	fclose(f);
830	+	#endif
831	+	#ifdef CYGWIN
832	+	sg_set_error(SG_ERROR_UNSUPPORTED, "Cygwin");
833	+	return NULL;
834	+	#endif
835	+	#ifdef HPUX
836	+	sg_set_error(SG_ERROR_UNSUPPORTED, "HP-UX");
837	+	return NULL;
838	+	#endif
839	+	#ifdef WIN32
840	+	ifaces = 0;
841
842	<	return network_stats_diff;
843	<	}
842	>	if((if_table = win32_get_devices()) == NULL) {
843	>	sg_set_error(SG_ERROR_DEVICES, "network interfaces");
844	>	return NULL;
845	>	}
846	>
847	>	if(VECTOR_RESIZE(network_iface_stats, if_table->dwNumEntries) < 0) {
848	>	free(if_table);
849	>	return NULL;
850	>	}
851	>
852	>	for(i=0; i<if_table->dwNumEntries; i++) {
853	>	network_iface_stat_ptr=network_iface_stats+i;
854	>	if_row = if_table->table[i];
855	>
856	>	if(sg_update_string(&network_iface_stat_ptr->interface_name,
857	>	if_row.bDescr) < 0) {
858	>	free(if_table);
859	>	return NULL;
860	>	}
861	>	network_iface_stat_ptr->speed = if_row.dwSpeed /1000000;
862	>
863	>	if((if_row.dwOperStatus == MIB_IF_OPER_STATUS_CONNECTED ||
864	>	if_row.dwOperStatus ==
865	>	MIB_IF_OPER_STATUS_OPERATIONAL) &&
866	>	if_row.dwAdminStatus == 1) {
867	>	network_iface_stat_ptr->up = 1;
868	>	} else {
869	>	network_iface_stat_ptr->up = 0;
870	>	}
871	>
872	>	ifaces++;
873	>	}
874	>	free(if_table);
875	>
876	>	/* again with the renumbering */
877	>	for (i=0; i<ifaces; i++) {
878	>	no = 2;
879	>	for(j=i+1; j<ifaces; j++) {
880	>	network_iface_stat_ptr=network_iface_stats+j;
881	>	if(strcmp(network_iface_stats[i].interface_name,
882	>	network_iface_stat_ptr->interface_name) == 0) {
883	>	if(snprintf(buf, sizeof(buf), " #%d", no) < 0) {
884	>	break;
885	>	}
886	>	if(sg_concat_string(&network_iface_stat_ptr->interface_name, buf) != 0) {
887	>	return NULL;
888	>	}
889	>
890	>	no++;
891	>	}
892	>	}
893	>	}
894	>	#endif
895	>
896	>	#ifdef SG_ENABLE_DEPRECATED
897	>	network_iface_stat_ptr->dup = network_iface_stat_ptr->duplex;
898	>	#endif
899	>
900	>	*entries = ifaces;
901	>	return network_iface_stats;
902	>	}
903	>
904	>	int sg_network_iface_compare_name(const void *va, const void *vb) {
905	>	const sg_network_iface_stats *a = (const sg_network_iface_stats *)va;
906	>	const sg_network_iface_stats *b = (const sg_network_iface_stats *)vb;
907	>
908	>	return strcmp(a->interface_name, b->interface_name);
909	>	}
910

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