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 1.44 2004/02/14 16:58:19 ats 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>
#include <sys/types.h>
#include <sys/socket.h>
#include <sys/ioctl.h>
#include <net/if.h>
#include <netinet/in.h>
#include <sys/sockio.h>
#endif
#ifdef LINUX
#include <stdio.h>
#include <sys/types.h>
#include <regex.h>
#include <sys/ioctl.h>
#include <sys/socket.h>
#include <net/if.h>
#include <ctype.h>
#include "tools.h"
/* Stuff which could be defined by defining KERNEL, but 
 * that would be a bad idea, so we'll just declare it here
 */
typedef __uint8_t u8;
typedef __uint16_t u16;
typedef __uint32_t u32;
typedef __uint64_t u64;
#include <linux/ethtool.h>
#include <linux/sockios.h>
#include <unistd.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){
                                /* This is a network interface, but it doesn't
                                 * have the rbytes/obytes values; for instance,
                                 * the loopback devices have this behaviour
                                 * (although they do track packets in/out). */
                                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){
                                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) || defined(DFBSD)
#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=UNKNOWN_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;        
        int ifaces = 0;

#ifdef SOLARIS
        kstat_ctl_t *kc;
        kstat_t *ksp;
        kstat_named_t *knp;
        int sock;
#endif
#ifdef ALLBSD
        struct ifaddrs *net, *net_ptr;
        struct ifmediareq ifmed;
        struct ifreq ifr;
        int sock;
        int x;
#endif
#ifdef LINUX
        FILE *f;
        /* Horrible big enough, but it should be easily big enough */
        char line[8096];
        int sock;
#endif

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

        if ((sock = socket(AF_INET, SOCK_DGRAM, 0)) == 0) 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(&ifr, 0, sizeof(ifr));
                strncpy(ifr.ifr_name, net_ptr->ifa_name, sizeof(ifr.ifr_name));

                if (ioctl(sock, SIOCGIFFLAGS, &ifr) < 0){
                        continue;
                }       
                if((ifr.ifr_flags & IFF_UP) != 0){
                        network_iface_stat_ptr->up = 1;
                }else{
                        network_iface_stat_ptr->up = 0;
                }

                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;

                network_iface_stat_ptr->speed = 0;
                network_iface_stat_ptr->dup = UNKNOWN_DUPLEX;
                ifaces++;

                memset(&ifmed, 0, sizeof(struct ifmediareq));
                strlcpy(ifmed.ifm_name, net_ptr->ifa_name, sizeof(ifmed.ifm_name));
                if(ioctl(sock, SIOCGIFMEDIA, (caddr_t)&ifmed) == -1){
                        /* Not all interfaces support the media ioctls. */
                        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;
                }

                /* 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):
#ifdef IFM_1000_TX
                        case(IFM_1000_TX): /* FreeBSD 4 and others? */
#endif
#ifdef IFM_1000_FX
                        case(IFM_1000_FX): /* FreeBSD 4 */
#endif
#ifdef IFM_1000_T
                        case(IFM_1000_T): /* FreeBSD 5 */
#endif
                                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 = UNKNOWN_DUPLEX;
                }

        }       
        freeifaddrs(net);
        close(sock);
#endif

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

        if ((sock = socket(PF_INET, SOCK_DGRAM, IPPROTO_IP)) < 0) {
                return NULL;
        }

        for (ksp = kc->kc_chain; ksp; ksp = ksp->ks_next) {
                if (!strcmp(ksp->ks_class, "net")) {
                        struct ifreq ifr;

                        kstat_read(kc, ksp, NULL);

                        strncpy(ifr.ifr_name, ksp->ks_name, sizeof ifr.ifr_name);
                        if (ioctl(sock, SIOCGIFFLAGS, &ifr) < 0) {
                                /* Not a network interface. */
                                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;
                        ifaces++;

                        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;

                        if ((ifr.ifr_flags & IFF_UP) != 0) {
                                network_iface_stat_ptr->up = 1;
                        } else {
                                network_iface_stat_ptr->up = 1;
                        }

                        if ((knp = kstat_data_lookup(ksp, "ifspeed")) != NULL) {
                                network_iface_stat_ptr->speed = knp->value.ui64 / (1000 * 1000);
                        } else {
                                network_iface_stat_ptr->speed = 0;
                        }

                        network_iface_stat_ptr->dup = UNKNOWN_DUPLEX;
                        if ((knp = kstat_data_lookup(ksp, "link_duplex")) != NULL) {
                                switch (knp->value.ui32) {
                                case 1:
                                        network_iface_stat_ptr->dup = HALF_DUPLEX;
                                        break;
                                case 2:
                                        network_iface_stat_ptr->dup = FULL_DUPLEX;
                                        break;
                                }
                        }
                }
        }

        close(sock);
        kstat_close(kc);
#endif  
#ifdef LINUX
        f = fopen("/proc/net/dev", "r");
        if(f == NULL){
                return NULL;
        }

        /* Setup stuff so we can do the ioctl to get the info */
        if((sock = socket(AF_INET, SOCK_DGRAM, 0)) < 0){
                return NULL;
        }

        /* Ignore first 2 lines.. Just headings */
        if((fgets(line, sizeof(line), f)) == NULL) return NULL;
        if((fgets(line, sizeof(line), f)) == NULL) return NULL;

        while((fgets(line, sizeof(line), f)) != NULL){
                char *name, *ptr;
                struct ifreq ifr;
                struct ethtool_cmd ethcmd;
                int err;

                /* Get the interface name */
                ptr = strchr(line, ':');
                if (ptr == NULL) continue;
                *ptr='\0';
                name = line;
                while(isspace(*(name))){
                        name++;
                }

                memset(&ifr, 0, sizeof ifr);
                strncpy(ifr.ifr_name, name, sizeof ifr.ifr_name);

                if (ioctl(sock, SIOCGIFFLAGS, &ifr) < 0) {
                        continue;
                }

                /* We have a good interface to add */
                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->interface_name = strdup(name);
                if ((ifr.ifr_flags & IFF_UP) != 0) {
                        network_iface_stat_ptr->up = 1;
                } else {
                        network_iface_stat_ptr->up = 0;
                }

                memset(&ethcmd, 0, sizeof ethcmd);
                ethcmd.cmd = ETHTOOL_GSET;
                ifr.ifr_data = (caddr_t) &ethcmd;

                err = ioctl(sock, SIOCETHTOOL, &ifr);
                if (err == 0) {
                        network_iface_stat_ptr->speed = ethcmd.speed;

                        switch (ethcmd.duplex) {
                        case 0x00:
                                network_iface_stat_ptr->dup = FULL_DUPLEX;
                                break;
                        case 0x01:
                                network_iface_stat_ptr->dup = HALF_DUPLEX;
                                break;
                        default:
                                network_iface_stat_ptr->dup = UNKNOWN_DUPLEX;
                        }
                } else {
                        /* Not all interfaces support the ethtool ioctl. */
                        network_iface_stat_ptr->speed = 0;
                        network_iface_stat_ptr->dup = UNKNOWN_DUPLEX;
                }

                ifaces++;
        }
        close(sock);
        fclose(f);
#endif
        *entries = ifaces;
        return network_iface_stats; 
}

Revision:	1.45
Committed:	Mon Feb 16 14:55:32 2004 UTC (20 years, 3 months ago) by tdb
Content type:	text/plain
Branch:	MAIN
Changes since 1.44:	+10 -7 lines
Log Message:	Add support for DragonFly BSD 1.0. Also a minor tweak to the network interface code to make it more portable.
#	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	tdb	1.45	* $Id: network_stats.c,v 1.44 2004/02/14 16:58:19 ats 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	ats	1.44	#include <sys/types.h>
36			#include <sys/socket.h>
37			#include <sys/ioctl.h>
38			#include <net/if.h>
39			#include <netinet/in.h>
40			#include <sys/sockio.h>
41	pajs	1.6	#endif
42			#ifdef LINUX
43			#include <stdio.h>
44			#include <sys/types.h>
45			#include <regex.h>
46	pajs	1.27	#include <sys/ioctl.h>
47			#include <sys/socket.h>
48			#include <net/if.h>
49			#include <ctype.h>
50	pajs	1.6	#include "tools.h"
51	pajs	1.27	/* Stuff which could be defined by defining KERNEL, but
52			* that would be a bad idea, so we'll just declare it here
53			*/
54			typedef __uint8_t u8;
55			typedef __uint16_t u16;
56			typedef __uint32_t u32;
57	ats	1.42	typedef __uint64_t u64;
58	pajs	1.27	#include <linux/ethtool.h>
59			#include <linux/sockios.h>
60	ats	1.32	#include <unistd.h>
61	pajs	1.1	#endif
62	ats	1.18	#ifdef ALLBSD
63	pajs	1.14	#include <sys/types.h>
64			#include <sys/socket.h>
65			#include <ifaddrs.h>
66			#include <net/if.h>
67	pajs	1.26	#include <net/if_media.h>
68			#include <sys/ioctl.h>
69	pajs	1.14	#endif
70	pajs	1.1
71	pajs	1.3	static network_stat_t *network_stats=NULL;
72			static int interfaces=0;
73	pajs	1.1
74	pajs	1.3	void network_stat_init(int start, int end, network_stat_t *net_stats){
75
76			for(net_stats+=start; start<end; start++){
77			net_stats->interface_name=NULL;
78			net_stats->tx=0;
79			net_stats->rx=0;
80			net_stats++;
81			}
82			}
83
84			network_stat_t network_stat_malloc(int needed_entries, int cur_entries, network_stat_t *net_stats){
85
86			if(net_stats==NULL){
87
88			if((net_stats=malloc(needed_entries * sizeof(network_stat_t)))==NULL){
89	pajs	1.1	return NULL;
90			}
91	pajs	1.3	network_stat_init(0, needed_entries, net_stats);
92			*cur_entries=needed_entries;
93
94	pajs	1.1	return net_stats;
95			}
96	pajs	1.3
97
98			if(*cur_entries<needed_entries){
99			net_stats=realloc(net_stats, (sizeof(network_stat_t)*needed_entries));
100			if(net_stats==NULL){
101	pajs	1.1	return NULL;
102			}
103	pajs	1.3	network_stat_init(*cur_entries, needed_entries, net_stats);
104			*cur_entries=needed_entries;
105	pajs	1.1	}
106
107			return net_stats;
108			}
109
110	pajs	1.3
111	pajs	1.1	network_stat_t get_network_stats(int entries){
112	pajs	1.6
113			static int sizeof_network_stats=0;
114			network_stat_t *network_stat_ptr;
115
116			#ifdef SOLARIS
117	pajs	1.1	kstat_ctl_t *kc;
118			kstat_t *ksp;
119			kstat_named_t *knp;
120	pajs	1.6	#endif
121	pajs	1.3
122	pajs	1.6	#ifdef LINUX
123			FILE *f;
124	pajs	1.12	/* Horrible big enough, but it should be easily big enough */
125	pajs	1.6	char line[8096];
126			regex_t regex;
127			regmatch_t line_match[4];
128	pajs	1.14	#endif
129	ats	1.18	#ifdef ALLBSD
130	pajs	1.14	struct ifaddrs net, net_ptr;
131			struct if_data *net_data;
132			#endif
133
134	ats	1.18	#ifdef ALLBSD
135	pajs	1.14	if(getifaddrs(&net) != 0){
136			return NULL;
137			}
138
139			interfaces=0;
140
141			for(net_ptr=net;net_ptr!=NULL;net_ptr=net_ptr->ifa_next){
142			if(net_ptr->ifa_addr->sa_family != AF_LINK) continue;
143			network_stats=network_stat_malloc((interfaces+1), &sizeof_network_stats, network_stats);
144			if(network_stats==NULL){
145			return NULL;
146			}
147			network_stat_ptr=network_stats+interfaces;
148
149			if(network_stat_ptr->interface_name!=NULL) free(network_stat_ptr->interface_name);
150			network_stat_ptr->interface_name=strdup(net_ptr->ifa_name);
151			if(network_stat_ptr->interface_name==NULL) return NULL;
152			net_data=(struct if_data *)net_ptr->ifa_data;
153			network_stat_ptr->rx=net_data->ifi_ibytes;
154			network_stat_ptr->tx=net_data->ifi_obytes;
155			network_stat_ptr->systime=time(NULL);
156			interfaces++;
157			}
158			freeifaddrs(net);
159	pajs	1.6	#endif
160	pajs	1.1
161	pajs	1.6	#ifdef SOLARIS
162	pajs	1.1	if ((kc = kstat_open()) == NULL) {
163			return NULL;
164			}
165
166	pajs	1.6	interfaces=0;
167	pajs	1.3
168	pajs	1.1	for (ksp = kc->kc_chain; ksp; ksp = ksp->ks_next) {
169			if (!strcmp(ksp->ks_class, "net")) {
170			kstat_read(kc, ksp, NULL);
171
172	pajs	1.7	#ifdef SOL7
173			#define RLOOKUP "rbytes"
174			#define WLOOKUP "obytes"
175			#define VALTYPE value.ui32
176			#else
177			#define RLOOKUP "rbytes64"
178			#define WLOOKUP "obytes64"
179			#define VALTYPE value.ui64
180			#endif
181
182			if((knp=kstat_data_lookup(ksp, RLOOKUP))==NULL){
183	ats	1.44	/* This is a network interface, but it doesn't
184			* have the rbytes/obytes values; for instance,
185			* the loopback devices have this behaviour
186			* (although they do track packets in/out). */
187	pajs	1.1	continue;
188			}
189	pajs	1.3
190			network_stats=network_stat_malloc((interfaces+1), &sizeof_network_stats, network_stats);
191	pajs	1.1	if(network_stats==NULL){
192			return NULL;
193			}
194			network_stat_ptr=network_stats+interfaces;
195	pajs	1.7	network_stat_ptr->rx=knp->VALTYPE;
196	pajs	1.1
197	pajs	1.7	if((knp=kstat_data_lookup(ksp, WLOOKUP))==NULL){
198	pajs	1.1	continue;
199			}
200	pajs	1.7	network_stat_ptr->tx=knp->VALTYPE;
201	pajs	1.1	if(network_stat_ptr->interface_name!=NULL){
202			free(network_stat_ptr->interface_name);
203			}
204			network_stat_ptr->interface_name=strdup(ksp->ks_name);
205	pajs	1.3
206			network_stat_ptr->systime=time(NULL);
207	pajs	1.1	interfaces++;
208			}
209			}
210	pajs	1.2
211			kstat_close(kc);
212	pajs	1.6	#endif
213			#ifdef LINUX
214			f=fopen("/proc/net/dev", "r");
215			if(f==NULL){
216			return NULL;
217			}
218			/* read the 2 lines.. Its the title, so we dont care :) */
219			fgets(line, sizeof(line), f);
220			fgets(line, sizeof(line), f);
221
222
223			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){
224			return NULL;
225			}
226
227			interfaces=0;
228	pajs	1.1
229	pajs	1.6	while((fgets(line, sizeof(line), f)) != NULL){
230			if((regexec(&regex, line, 4, line_match, 0))!=0){
231			continue;
232			}
233			network_stats=network_stat_malloc((interfaces+1), &sizeof_network_stats, network_stats);
234			if(network_stats==NULL){
235			return NULL;
236			}
237			network_stat_ptr=network_stats+interfaces;
238
239			if(network_stat_ptr->interface_name!=NULL){
240			free(network_stat_ptr->interface_name);
241			}
242
243			network_stat_ptr->interface_name=get_string_match(line, &line_match[1]);
244			network_stat_ptr->rx=get_ll_match(line, &line_match[2]);
245			network_stat_ptr->tx=get_ll_match(line, &line_match[3]);
246			network_stat_ptr->systime=time(NULL);
247
248			interfaces++;
249			}
250	pajs	1.12	fclose(f);
251	pajs	1.13	regfree(&regex);
252	pajs	1.6
253			#endif
254	ats	1.20
255			#ifdef CYGWIN
256			return NULL;
257			#endif
258
259	pajs	1.1	*entries=interfaces;
260
261			return network_stats;
262	pajs	1.3	}
263
264	pajs	1.8	long long transfer_diff(long long new, long long old){
265	tdb	1.45	#if defined(SOL7) \|\| defined(LINUX) \|\| defined(FREEBSD) \|\| defined(DFBSD)
266	ats	1.19	#define MAXVAL 4294967296LL
267	pajs	1.8	#else
268	ats	1.19	#define MAXVAL 18446744073709551616LL
269	pajs	1.8	#endif
270			long long result;
271	pajs	1.10	if(new>=old){
272	pajs	1.8	result = (new-old);
273			}else{
274			result = (MAXVAL+(new-old));
275			}
276
277			return result;
278
279			}
280
281	ats	1.24	network_stat_t get_network_stats_diff(int entries) {
282			static network_stat_t *diff = NULL;
283			static int diff_count = 0;
284			network_stat_t src, dest;
285			int i, j, new_count;
286
287			if (network_stats == NULL) {
288			/* No previous stats, so we can't calculate a difference. */
289			return get_network_stats(entries);
290	pajs	1.3	}
291
292	ats	1.24	/* Resize the results array to match the previous stats. */
293			diff = network_stat_malloc(interfaces, &diff_count, diff);
294			if (diff == NULL) {
295	pajs	1.3	return NULL;
296			}
297
298	ats	1.24	/* Copy the previous stats into the result. */
299			for (i = 0; i < diff_count; i++) {
300			src = &network_stats[i];
301			dest = &diff[i];
302	pajs	1.3
303	ats	1.24	if (dest->interface_name != NULL) {
304			free(dest->interface_name);
305	pajs	1.3	}
306	ats	1.24	dest->interface_name = strdup(src->interface_name);
307			dest->rx = src->rx;
308			dest->tx = src->tx;
309			dest->systime = src->systime;
310			}
311	pajs	1.3
312	ats	1.24	/* Get a new set of stats. */
313			if (get_network_stats(&new_count) == NULL) {
314	ats	1.21	return NULL;
315			}
316	pajs	1.3
317	ats	1.24	/* For each previous stat... */
318			for (i = 0; i < diff_count; i++) {
319			dest = &diff[i];
320
321			/* ... find the corresponding new stat ... */
322			for (j = 0; j < new_count; j++) {
323			/* Try the new stat in the same position first,
324			since that's most likely to be it. */
325			src = &network_stats[(i + j) % new_count];
326			if (strcmp(src->interface_name, dest->interface_name) == 0) {
327			break;
328			}
329			}
330			if (j == new_count) {
331			/* No match found. */
332			continue;
333	pajs	1.3	}
334
335	ats	1.24	/* ... and subtract the previous stat from it to get the
336			difference. */
337			dest->rx = transfer_diff(src->rx, dest->rx);
338			dest->tx = transfer_diff(src->tx, dest->tx);
339			dest->systime = src->systime - dest->systime;
340	pajs	1.3	}
341
342	ats	1.24	*entries = diff_count;
343			return diff;
344			}
345	pajs	1.25	/* NETWORK INTERFACE STATS */
346
347			void network_iface_stat_init(int start, int end, network_iface_stat_t *net_stats){
348
349			for(net_stats+=start; start<end; start++){
350			net_stats->interface_name=NULL;
351			net_stats->speed=0;
352	ats	1.31	net_stats->dup=UNKNOWN_DUPLEX;
353	pajs	1.25	net_stats++;
354			}
355			}
356
357			network_iface_stat_t network_iface_stat_malloc(int needed_entries, int cur_entries, network_iface_stat_t *net_stats){
358
359			if(net_stats==NULL){
360
361			if((net_stats=malloc(needed_entries * sizeof(network_iface_stat_t)))==NULL){
362			return NULL;
363			}
364			network_iface_stat_init(0, needed_entries, net_stats);
365			*cur_entries=needed_entries;
366
367			return net_stats;
368			}
369
370
371			if(*cur_entries<needed_entries){
372			net_stats=realloc(net_stats, (sizeof(network_iface_stat_t)*needed_entries));
373			if(net_stats==NULL){
374			return NULL;
375			}
376			network_iface_stat_init(*cur_entries, needed_entries, net_stats);
377			*cur_entries=needed_entries;
378			}
379
380			return net_stats;
381			}
382
383			network_iface_stat_t get_network_iface_stats(int entries){
384			static network_iface_stat_t *network_iface_stats;
385			network_iface_stat_t *network_iface_stat_ptr;
386			static int sizeof_network_iface_stats=0;
387	ats	1.43	int ifaces = 0;
388	pajs	1.25
389			#ifdef SOLARIS
390			kstat_ctl_t *kc;
391			kstat_t *ksp;
392			kstat_named_t *knp;
393	ats	1.44	int sock;
394	pajs	1.25	#endif
395	pajs	1.26	#ifdef ALLBSD
396			struct ifaddrs net, net_ptr;
397			struct ifmediareq ifmed;
398	pajs	1.36	struct ifreq ifr;
399	ats	1.37	int sock;
400	pajs	1.26	int x;
401			#endif
402	pajs	1.27	#ifdef LINUX
403			FILE *f;
404			/* Horrible big enough, but it should be easily big enough */
405			char line[8096];
406			int sock;
407			#endif
408	ats	1.43
409	pajs	1.26	#ifdef ALLBSD
410			if(getifaddrs(&net) != 0){
411			return NULL;
412			}
413
414	ats	1.37	if ((sock = socket(AF_INET, SOCK_DGRAM, 0)) == 0) return NULL;
415	pajs	1.26
416			for(net_ptr=net; net_ptr!=NULL; net_ptr=net_ptr->ifa_next){
417			if(net_ptr->ifa_addr->sa_family != AF_LINK) continue;
418			network_iface_stats=network_iface_stat_malloc((ifaces+1), &sizeof_network_iface_stats, network_iface_stats);
419			if(network_iface_stats==NULL){
420			return NULL;
421			}
422			network_iface_stat_ptr = network_iface_stats + ifaces;
423
424	ats	1.40	memset(&ifr, 0, sizeof(ifr));
425			strncpy(ifr.ifr_name, net_ptr->ifa_name, sizeof(ifr.ifr_name));
426
427			if (ioctl(sock, SIOCGIFFLAGS, &ifr) < 0){
428			continue;
429			}
430			if((ifr.ifr_flags & IFF_UP) != 0){
431			network_iface_stat_ptr->up = 1;
432			}else{
433			network_iface_stat_ptr->up = 0;
434			}
435
436			if (network_iface_stat_ptr->interface_name != NULL) free(network_iface_stat_ptr->interface_name);
437			network_iface_stat_ptr->interface_name = strdup(net_ptr->ifa_name);
438			if (network_iface_stat_ptr->interface_name == NULL) return NULL;
439
440			network_iface_stat_ptr->speed = 0;
441			network_iface_stat_ptr->dup = UNKNOWN_DUPLEX;
442			ifaces++;
443
444	pajs	1.26	memset(&ifmed, 0, sizeof(struct ifmediareq));
445			strlcpy(ifmed.ifm_name, net_ptr->ifa_name, sizeof(ifmed.ifm_name));
446	ats	1.37	if(ioctl(sock, SIOCGIFMEDIA, (caddr_t)&ifmed) == -1){
447	ats	1.40	/* Not all interfaces support the media ioctls. */
448	pajs	1.26	continue;
449			}
450
451			/* We may need to change this if we start doing wireless devices too */
452			if( (ifmed.ifm_active \| IFM_ETHER) != ifmed.ifm_active ){
453			/* Not a ETHER device */
454			continue;
455			}
456
457			/* Only intrested in the first 4 bits) - Assuming only ETHER devices */
458			x = ifmed.ifm_active & 0x0f;
459			switch(x){
460			/* 10 Mbit connections. Speedy :) */
461			case(IFM_10_T):
462			case(IFM_10_2):
463			case(IFM_10_5):
464			case(IFM_10_STP):
465			case(IFM_10_FL):
466			network_iface_stat_ptr->speed = 10;
467			break;
468			/* 100 Mbit conneections */
469			case(IFM_100_TX):
470			case(IFM_100_FX):
471			case(IFM_100_T4):
472			case(IFM_100_VG):
473			case(IFM_100_T2):
474			network_iface_stat_ptr->speed = 100;
475			break;
476			/* 1000 Mbit connections */
477			case(IFM_1000_SX):
478			case(IFM_1000_LX):
479			case(IFM_1000_CX):
480	tdb	1.45	#ifdef IFM_1000_TX
481			case(IFM_1000_TX): /* FreeBSD 4 and others? */
482			#endif
483			#ifdef IFM_1000_FX
484			case(IFM_1000_FX): /* FreeBSD 4 */
485			#endif
486			#ifdef IFM_1000_T
487			case(IFM_1000_T): /* FreeBSD 5 */
488	tdb	1.28	#endif
489	pajs	1.26	network_iface_stat_ptr->speed = 1000;
490			break;
491			/* We don't know what it is */
492			default:
493			network_iface_stat_ptr->speed = 0;
494			break;
495			}
496
497			if( (ifmed.ifm_active \| IFM_FDX) == ifmed.ifm_active ){
498			network_iface_stat_ptr->dup = FULL_DUPLEX;
499			}else if( (ifmed.ifm_active \| IFM_HDX) == ifmed.ifm_active ){
500			network_iface_stat_ptr->dup = HALF_DUPLEX;
501			}else{
502	ats	1.31	network_iface_stat_ptr->dup = UNKNOWN_DUPLEX;
503	pajs	1.26	}
504	pajs	1.36
505	pajs	1.26	}
506			freeifaddrs(net);
507	ats	1.37	close(sock);
508	pajs	1.26	#endif
509	pajs	1.25
510			#ifdef SOLARIS
511	ats	1.44	if ((kc = kstat_open()) == NULL) {
512			return NULL;
513			}
514
515			if ((sock = socket(PF_INET, SOCK_DGRAM, IPPROTO_IP)) < 0) {
516			return NULL;
517			}
518	pajs	1.25
519	ats	1.44	for (ksp = kc->kc_chain; ksp; ksp = ksp->ks_next) {
520			if (!strcmp(ksp->ks_class, "net")) {
521			struct ifreq ifr;
522
523			kstat_read(kc, ksp, NULL);
524
525			strncpy(ifr.ifr_name, ksp->ks_name, sizeof ifr.ifr_name);
526			if (ioctl(sock, SIOCGIFFLAGS, &ifr) < 0) {
527			/* Not a network interface. */
528	pajs	1.25	continue;
529			}
530	ats	1.44
531			network_iface_stats = network_iface_stat_malloc(ifaces + 1, &sizeof_network_iface_stats, network_iface_stats);
532			if (network_iface_stats == NULL) {
533	pajs	1.25	return NULL;
534			}
535	pajs	1.26	network_iface_stat_ptr = network_iface_stats + ifaces;
536	ats	1.44	ifaces++;
537
538			if (network_iface_stat_ptr->interface_name != NULL) free(network_iface_stat_ptr->interface_name);
539			network_iface_stat_ptr->interface_name = strdup(ksp->ks_name);
540			if (network_iface_stat_ptr->interface_name == NULL) return NULL;
541	pajs	1.25
542	ats	1.44	if ((ifr.ifr_flags & IFF_UP) != 0) {
543			network_iface_stat_ptr->up = 1;
544			} else {
545			network_iface_stat_ptr->up = 1;
546			}
547	pajs	1.35
548	ats	1.44	if ((knp = kstat_data_lookup(ksp, "ifspeed")) != NULL) {
549			network_iface_stat_ptr->speed = knp->value.ui64 / (1000 * 1000);
550			} else {
551			network_iface_stat_ptr->speed = 0;
552	pajs	1.25	}
553
554	pajs	1.33	network_iface_stat_ptr->dup = UNKNOWN_DUPLEX;
555	ats	1.44	if ((knp = kstat_data_lookup(ksp, "link_duplex")) != NULL) {
556			switch (knp->value.ui32) {
557			case 1:
558			network_iface_stat_ptr->dup = HALF_DUPLEX;
559			break;
560			case 2:
561			network_iface_stat_ptr->dup = FULL_DUPLEX;
562			break;
563			}
564	pajs	1.33	}
565	pajs	1.25	}
566			}
567	ats	1.44
568			close(sock);
569	pajs	1.25	kstat_close(kc);
570			#endif
571	pajs	1.27	#ifdef LINUX
572			f = fopen("/proc/net/dev", "r");
573			if(f == NULL){
574			return NULL;
575			}
576
577			/* Setup stuff so we can do the ioctl to get the info */
578			if((sock = socket(AF_INET, SOCK_DGRAM, 0)) < 0){
579			return NULL;
580			}
581
582			/* Ignore first 2 lines.. Just headings */
583	pajs	1.29	if((fgets(line, sizeof(line), f)) == NULL) return NULL;
584			if((fgets(line, sizeof(line), f)) == NULL) return NULL;
585	pajs	1.27
586			while((fgets(line, sizeof(line), f)) != NULL){
587			char name, ptr;
588			struct ifreq ifr;
589	ats	1.38	struct ethtool_cmd ethcmd;
590	pajs	1.27	int err;
591
592			/* Get the interface name */
593			ptr = strchr(line, ':');
594			if (ptr == NULL) continue;
595			*ptr='\0';
596			name = line;
597			while(isspace(*(name))){
598			name++;
599			}
600
601	ats	1.38	memset(&ifr, 0, sizeof ifr);
602			strncpy(ifr.ifr_name, name, sizeof ifr.ifr_name);
603	pajs	1.27
604	ats	1.38	if (ioctl(sock, SIOCGIFFLAGS, &ifr) < 0) {
605			continue;
606			}
607	pajs	1.27
608			/* We have a good interface to add */
609			network_iface_stats=network_iface_stat_malloc((ifaces+1), &sizeof_network_iface_stats, network_iface_stats);
610			if(network_iface_stats==NULL){
611			return NULL;
612			}
613			network_iface_stat_ptr = network_iface_stats + ifaces;
614			network_iface_stat_ptr->interface_name = strdup(name);
615	ats	1.38	if ((ifr.ifr_flags & IFF_UP) != 0) {
616	pajs	1.35	network_iface_stat_ptr->up = 1;
617	ats	1.38	} else {
618	pajs	1.35	network_iface_stat_ptr->up = 0;
619			}
620
621	ats	1.38	memset(&ethcmd, 0, sizeof ethcmd);
622			ethcmd.cmd = ETHTOOL_GSET;
623			ifr.ifr_data = (caddr_t) &ethcmd;
624
625			err = ioctl(sock, SIOCETHTOOL, &ifr);
626			if (err == 0) {
627			network_iface_stat_ptr->speed = ethcmd.speed;
628
629			switch (ethcmd.duplex) {
630			case 0x00:
631			network_iface_stat_ptr->dup = FULL_DUPLEX;
632			break;
633			case 0x01:
634			network_iface_stat_ptr->dup = HALF_DUPLEX;
635			break;
636			default:
637			network_iface_stat_ptr->dup = UNKNOWN_DUPLEX;
638			}
639			} else {
640			/* Not all interfaces support the ethtool ioctl. */
641	ats	1.39	network_iface_stat_ptr->speed = 0;
642	ats	1.38	network_iface_stat_ptr->dup = UNKNOWN_DUPLEX;
643	pajs	1.27	}
644	ats	1.38
645	pajs	1.27	ifaces++;
646			}
647	pajs	1.30	close(sock);
648	ats	1.38	fclose(f);
649	pajs	1.27	#endif
650	pajs	1.26	*entries = ifaces;
651	pajs	1.25	return network_iface_stats;
652			}
653