src/libstatgrab/network_stats.c

/*
 * i-scream central monitoring system
 * http://www.i-scream.org
 * Copyright (C) 2000-2004 i-scream
 * 
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 * 
 * This library 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
 * Lesser General Public License for more details.
 * 
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
 * 02111-1307 USA
 *
 * $Id: network_stats.c,v 1.25 2004/01/23 23:23:33 pajs Exp $
 */

#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>
#include <net/if_media.h>
#include <sys/ioctl.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

#ifdef CYGWIN
        return NULL;
#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 *diff = NULL;
        static int diff_count = 0;
        network_stat_t *src, *dest;
        int i, j, new_count;

        if (network_stats == NULL) {
                /* No previous stats, so we can't calculate a difference. */
                return get_network_stats(entries);
        }

        /* Resize the results array to match the previous stats. */
        diff = network_stat_malloc(interfaces, &diff_count, diff);
        if (diff == NULL) {
                return NULL;
        }

        /* Copy the previous stats into the result. */
        for (i = 0; i < diff_count; i++) {
                src = &network_stats[i];
                dest = &diff[i];

                if (dest->interface_name != NULL) {
                        free(dest->interface_name);
                }
                dest->interface_name = strdup(src->interface_name);
                dest->rx = src->rx;
                dest->tx = src->tx;
                dest->systime = src->systime;
        }

        /* Get a new set of stats. */
        if (get_network_stats(&new_count) == NULL) {
                return NULL;
        }

        /* For each previous stat... */
        for (i = 0; i < diff_count; i++) {
                dest = &diff[i];

                /* ... find the corresponding new stat ... */
                for (j = 0; j < new_count; j++) {
                        /* Try the new stat in the same position first,
                           since that's most likely to be it. */
                        src = &network_stats[(i + j) % new_count];
                        if (strcmp(src->interface_name, dest->interface_name) == 0) {
                                break;
                        }
                }
                if (j == new_count) {
                        /* No match found. */
                        continue;
                }

                /* ... and subtract the previous stat from it to get the
                   difference. */
                dest->rx = transfer_diff(src->rx, dest->rx);
                dest->tx = transfer_diff(src->tx, dest->tx);
                dest->systime = src->systime - dest->systime;
        }

        *entries = diff_count;
        return diff;
}
/* NETWORK INTERFACE STATS */

void network_iface_stat_init(int start, int end, network_iface_stat_t *net_stats){

        for(net_stats+=start; start<end; start++){
                net_stats->interface_name=NULL;
                net_stats->speed=0;
                net_stats->dup=NO_DUPLEX;
                net_stats++;
        }
}

network_iface_stat_t *network_iface_stat_malloc(int needed_entries, int *cur_entries, network_iface_stat_t *net_stats){

        if(net_stats==NULL){

                if((net_stats=malloc(needed_entries * sizeof(network_iface_stat_t)))==NULL){
                        return NULL;
                }
                network_iface_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_iface_stat_t)*needed_entries));
                if(net_stats==NULL){
                        return NULL;
                }
                network_iface_stat_init(*cur_entries, needed_entries, net_stats);
                *cur_entries=needed_entries;
        }

        return net_stats;
}

network_iface_stat_t *get_network_iface_stats(int *entries){
        static network_iface_stat_t *network_iface_stats;
        network_iface_stat_t *network_iface_stat_ptr;
        static int sizeof_network_iface_stats=0;        
        static int ifaces;

#ifdef SOLARIS
        kstat_ctl_t *kc;
        kstat_t *ksp;
        kstat_named_t *knp;
#endif
#ifdef ALLBSD
        struct ifaddrs *net, *net_ptr;
        struct ifmediareq ifmed;
        int s;
        int x;
#endif

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

        if ((s = socket(AF_INET, SOCK_DGRAM, 0)) == NULL) return NULL;

        for(net_ptr=net; net_ptr!=NULL; net_ptr=net_ptr->ifa_next){
                if(net_ptr->ifa_addr->sa_family != AF_LINK) continue;
                network_iface_stats=network_iface_stat_malloc((ifaces+1), &sizeof_network_iface_stats, network_iface_stats);
                if(network_iface_stats==NULL){
                        return NULL;
                }
                network_iface_stat_ptr = network_iface_stats + ifaces;

                memset(&ifmed, 0, sizeof(struct ifmediareq));
                strlcpy(ifmed.ifm_name, net_ptr->ifa_name, sizeof(ifmed.ifm_name));
                if(ioctl(s, SIOCGIFMEDIA, (caddr_t)&ifmed) == -1){
                        continue;
                }

                /* We may need to change this if we start doing wireless devices too */
                if( (ifmed.ifm_active | IFM_ETHER) != ifmed.ifm_active ){
                        /* Not a ETHER device */
                        continue;
                }

                if(network_iface_stat_ptr->interface_name != NULL) free(network_iface_stat_ptr->interface_name);
                network_iface_stat_ptr->interface_name = strdup(net_ptr->ifa_name);
                if(network_iface_stat_ptr->interface_name == NULL) return NULL;

                /* Only intrested in the first 4 bits)  - Assuming only ETHER devices */
                x = ifmed.ifm_active & 0x0f;    
                switch(x){
                        /* 10 Mbit connections. Speedy :) */
                        case(IFM_10_T):
                        case(IFM_10_2):
                        case(IFM_10_5):
                        case(IFM_10_STP):
                        case(IFM_10_FL):
                                network_iface_stat_ptr->speed = 10;
                                break;
                        /* 100 Mbit conneections */
                        case(IFM_100_TX):
                        case(IFM_100_FX):
                        case(IFM_100_T4):
                        case(IFM_100_VG):
                        case(IFM_100_T2):
                                network_iface_stat_ptr->speed = 100;
                                break;
                        /* 1000 Mbit connections */
                        case(IFM_1000_SX):
                        case(IFM_1000_LX):
                        case(IFM_1000_CX):
                        case(IFM_1000_TX):
                                network_iface_stat_ptr->speed = 1000;
                                break;
                        /* We don't know what it is */
                        default:
                                network_iface_stat_ptr->speed = 0;
                                break;
                }

                if( (ifmed.ifm_active | IFM_FDX) == ifmed.ifm_active ){
                        network_iface_stat_ptr->dup = FULL_DUPLEX;
                }else if( (ifmed.ifm_active | IFM_HDX) == ifmed.ifm_active ){
                        network_iface_stat_ptr->dup = HALF_DUPLEX;
                }else{
                        network_iface_stat_ptr->dup = NO_DUPLEX;
                }
                ifaces++;
        }       
        freeifaddrs(net);
#endif

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

        for (ksp = kc->kc_chain; ksp; ksp = ksp->ks_next) {
                if (!strcmp(ksp->ks_class, "net")) {
                        kstat_read(kc, ksp, NULL);
                        if((knp=kstat_data_lookup(ksp, "ifspeed"))==NULL){
                                /* Not a network interface, so skip to the next entry */
                                continue;
                        }
                        network_iface_stats=network_iface_stat_malloc((ifaces+1), &sizeof_network_iface_stats, network_iface_stats);
                        if(network_iface_stats==NULL){
                                return NULL;
                        }
                        network_iface_stat_ptr = network_iface_stats + ifaces;
                        network_iface_stat_ptr->speed = knp->value.ui64 / (1000*1000);

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

                        if(knp->value.ui64 == 0){
                                network_iface_stat_ptr->dup = FULL_DUPLEX;
                        }else{
                                network_iface_stat_ptr->dup = HALF_DUPLEX;
                        }

                        if(network_iface_stat_ptr->interface_name != NULL) free(network_iface_stat_ptr->interface_name);
                        network_iface_stat_ptr->interface_name = strdup(ksp->ks_name);
                        if(network_iface_stat_ptr->interface_name == NULL) return NULL;
                        ifaces++;
                }
        }
        kstat_close(kc);
        
#endif  
        *entries = ifaces;
        return network_iface_stats; 
}

Revision:	1.26
Committed:	Sun Jan 25 20:13:57 2004 UTC (20 years, 3 months ago) by pajs
Content type:	text/plain
Branch:	MAIN
Changes since 1.25:	+91 -7 lines
Log Message:	Added code for freebsd to do the network interface speeds. I've put it under the label ALLBSD however, as i suspect it will work on all the BSD's of intrest.
#	User	Rev	Content
1	tdb	1.22	/*
2	pajs	1.1	* i-scream central monitoring system
3	tdb	1.15	* http://www.i-scream.org
4	tdb	1.22	* Copyright (C) 2000-2004 i-scream
5	pajs	1.1	*
6	tdb	1.22	* 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	pajs	1.1	*
11	tdb	1.22	* This library is distributed in the hope that it will be useful,
12	pajs	1.1	* but WITHOUT ANY WARRANTY; without even the implied warranty of
13	tdb	1.22	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14			* Lesser General Public License for more details.
15	pajs	1.1	*
16	tdb	1.22	* 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	tdb	1.23	*
21	pajs	1.26	* $Id: network_stats.c,v 1.25 2004/01/23 23:23:33 pajs Exp $
22	pajs	1.1	*/
23
24			#ifdef HAVE_CONFIG_H
25			#include "config.h"
26			#endif
27
28	tdb	1.4	#include <stdlib.h>
29	pajs	1.6	#include <string.h>
30	pajs	1.1	#include "statgrab.h"
31	tdb	1.11	#include <time.h>
32	pajs	1.1	#ifdef SOLARIS
33			#include <kstat.h>
34			#include <sys/sysinfo.h>
35	pajs	1.6	#endif
36			#ifdef LINUX
37			#include <stdio.h>
38			#include <sys/types.h>
39			#include <regex.h>
40			#include "tools.h"
41	pajs	1.1	#endif
42	ats	1.18	#ifdef ALLBSD
43	pajs	1.14	#include <sys/types.h>
44			#include <sys/socket.h>
45			#include <ifaddrs.h>
46			#include <net/if.h>
47	pajs	1.26	#include <net/if_media.h>
48			#include <sys/ioctl.h>
49	pajs	1.14	#endif
50	pajs	1.1
51	pajs	1.3	static network_stat_t *network_stats=NULL;
52			static int interfaces=0;
53	pajs	1.1
54	pajs	1.3	void network_stat_init(int start, int end, network_stat_t *net_stats){
55
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	pajs	1.1	return NULL;
70			}
71	pajs	1.3	network_stat_init(0, needed_entries, net_stats);
72			*cur_entries=needed_entries;
73
74	pajs	1.1	return net_stats;
75			}
76	pajs	1.3
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	pajs	1.1	return NULL;
82			}
83	pajs	1.3	network_stat_init(*cur_entries, needed_entries, net_stats);
84			*cur_entries=needed_entries;
85	pajs	1.1	}
86
87			return net_stats;
88			}
89
90	pajs	1.3
91	pajs	1.1	network_stat_t get_network_stats(int entries){
92	pajs	1.6
93			static int sizeof_network_stats=0;
94			network_stat_t *network_stat_ptr;
95
96			#ifdef SOLARIS
97	pajs	1.1	kstat_ctl_t *kc;
98			kstat_t *ksp;
99			kstat_named_t *knp;
100	pajs	1.6	#endif
101	pajs	1.3
102	pajs	1.6	#ifdef LINUX
103			FILE *f;
104	pajs	1.12	/* Horrible big enough, but it should be easily big enough */
105	pajs	1.6	char line[8096];
106			regex_t regex;
107			regmatch_t line_match[4];
108	pajs	1.14	#endif
109	ats	1.18	#ifdef ALLBSD
110	pajs	1.14	struct ifaddrs net, net_ptr;
111			struct if_data *net_data;
112			#endif
113
114	ats	1.18	#ifdef ALLBSD
115	pajs	1.14	if(getifaddrs(&net) != 0){
116			return NULL;
117			}
118
119			interfaces=0;
120
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	pajs	1.6	#endif
140	pajs	1.1
141	pajs	1.6	#ifdef SOLARIS
142	pajs	1.1	if ((kc = kstat_open()) == NULL) {
143			return NULL;
144			}
145
146	pajs	1.6	interfaces=0;
147	pajs	1.3
148	pajs	1.1	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	pajs	1.7	#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	pajs	1.1	/* Not a network interface, so skip to the next entry */
164			continue;
165			}
166	pajs	1.3
167			network_stats=network_stat_malloc((interfaces+1), &sizeof_network_stats, network_stats);
168	pajs	1.1	if(network_stats==NULL){
169			return NULL;
170			}
171			network_stat_ptr=network_stats+interfaces;
172	pajs	1.7	network_stat_ptr->rx=knp->VALTYPE;
173	pajs	1.1
174	pajs	1.7	if((knp=kstat_data_lookup(ksp, WLOOKUP))==NULL){
175	pajs	1.1	/* Not a network interface, so skip to the next entry */
176			continue;
177			}
178	pajs	1.7	network_stat_ptr->tx=knp->VALTYPE;
179	pajs	1.1	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	pajs	1.3
184			network_stat_ptr->systime=time(NULL);
185	pajs	1.1	interfaces++;
186			}
187			}
188	pajs	1.2
189			kstat_close(kc);
190	pajs	1.6	#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	pajs	1.1
207	pajs	1.6	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	pajs	1.12	fclose(f);
229	pajs	1.13	regfree(&regex);
230	pajs	1.6
231			#endif
232	ats	1.20
233			#ifdef CYGWIN
234			return NULL;
235			#endif
236
237	pajs	1.1	*entries=interfaces;
238
239			return network_stats;
240	pajs	1.3	}
241
242	pajs	1.8	long long transfer_diff(long long new, long long old){
243	pajs	1.17	#if defined(SOL7) \|\| defined(LINUX) \|\| defined(FREEBSD)
244	ats	1.19	#define MAXVAL 4294967296LL
245	pajs	1.8	#else
246	ats	1.19	#define MAXVAL 18446744073709551616LL
247	pajs	1.8	#endif
248			long long result;
249	pajs	1.10	if(new>=old){
250	pajs	1.8	result = (new-old);
251			}else{
252			result = (MAXVAL+(new-old));
253			}
254
255			return result;
256
257			}
258
259	ats	1.24	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	pajs	1.3	}
269
270	ats	1.24	/* Resize the results array to match the previous stats. */
271			diff = network_stat_malloc(interfaces, &diff_count, diff);
272			if (diff == NULL) {
273	pajs	1.3	return NULL;
274			}
275
276	ats	1.24	/* 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	pajs	1.3
281	ats	1.24	if (dest->interface_name != NULL) {
282			free(dest->interface_name);
283	pajs	1.3	}
284	ats	1.24	dest->interface_name = strdup(src->interface_name);
285			dest->rx = src->rx;
286			dest->tx = src->tx;
287			dest->systime = src->systime;
288			}
289	pajs	1.3
290	ats	1.24	/* Get a new set of stats. */
291			if (get_network_stats(&new_count) == NULL) {
292	ats	1.21	return NULL;
293			}
294	pajs	1.3
295	ats	1.24	/* 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	pajs	1.3	}
312
313	ats	1.24	/* ... 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	pajs	1.3	}
319
320	ats	1.24	*entries = diff_count;
321			return diff;
322			}
323	pajs	1.25	/* 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	pajs	1.26	static int ifaces;
366	pajs	1.25
367			#ifdef SOLARIS
368			kstat_ctl_t *kc;
369			kstat_t *ksp;
370			kstat_named_t *knp;
371			#endif
372	pajs	1.26	#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	pajs	1.25
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	pajs	1.26	network_iface_stat_ptr = network_iface_stats + ifaces;
472	pajs	1.25	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	pajs	1.26	if(network_iface_stat_ptr->interface_name != NULL) free(network_iface_stat_ptr->interface_name);
486	pajs	1.25	network_iface_stat_ptr->interface_name = strdup(ksp->ks_name);
487	pajs	1.26	if(network_iface_stat_ptr->interface_name == NULL) return NULL;
488			ifaces++;
489	pajs	1.25	}
490			}
491			kstat_close(kc);
492
493			#endif
494	pajs	1.26	*entries = ifaces;
495	pajs	1.25	return network_iface_stats;
496			}
497