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 1.33 2004/02/13 15:29:16 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 <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;
#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){
                                /* 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=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;        
        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
#ifdef LINUX
        FILE *f;
        /* Horrible big enough, but it should be easily big enough */
        char line[8096];
        void *eth_tool_cmd_buf;
        int buf_size;
        int sock;
#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):
#if defined(FREEBSD) && !defined(FREEBSD5)
                        case(IFM_1000_TX):
                        case(IFM_1000_FX):
#else
                        case(IFM_1000_T):
#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;
                }
                ifaces++;
        }       
        freeifaddrs(net);
        close(s);
#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;
                        }

                        network_iface_stat_ptr->dup = UNKNOWN_DUPLEX;
                        if(knp->value.ui32 == 2){
                                network_iface_stat_ptr->dup = FULL_DUPLEX;
                        }
                        if(knp->value.ui32 == 1){
                                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  
#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;
        }

        buf_size = sizeof(struct ethtool_cmd);
        eth_tool_cmd_buf = malloc(buf_size);
        if(eth_tool_cmd_buf == NULL) 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));
                memset(eth_tool_cmd_buf, 0, buf_size);
                ifr.ifr_data = (caddr_t) eth_tool_cmd_buf;
                strncpy(ifr.ifr_name, name, sizeof(ifr.ifr_name));

                ethcmd = (struct ethtool_cmd *) ifr.ifr_data;
                ethcmd->cmd = ETHTOOL_GSET;

                err = ioctl(sock, SIOCETHTOOL, &ifr);
                if(err < 0){
                        /* This could fail if the interface doesn't support the command. Carry
                         * on to the next :)
                         */
                        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);
                network_iface_stat_ptr->speed = ethcmd->speed;
                network_iface_stat_ptr->dup = UNKNOWN_DUPLEX;
                if(ethcmd->duplex == 0x00){
                        network_iface_stat_ptr->dup = FULL_DUPLEX;
                }
                if(ethcmd->duplex == 0x01){
                        network_iface_stat_ptr->dup = HALF_DUPLEX;
                }
                ifaces++;
        }
        close(sock);
        free(eth_tool_cmd_buf);
#endif
        *entries = ifaces;
        return network_iface_stats; 
}

Revision:	1.34
Committed:	Fri Feb 13 15:40:13 2004 UTC (20 years, 3 months ago) by tdb
Content type:	text/plain
Branch:	MAIN
Changes since 1.33:	+3 -3 lines
Log Message:	Add example for network_iface_stats. Fix duplex on Solaris.
#	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	1.34	* $Id: network_stats.c,v 1.33 2004/02/13 15:29:16 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	pajs	1.27	#include <sys/ioctl.h>
41			#include <sys/socket.h>
42			#include <net/if.h>
43			#include <ctype.h>
44	pajs	1.6	#include "tools.h"
45	pajs	1.27	/* Stuff which could be defined by defining KERNEL, but
46			* that would be a bad idea, so we'll just declare it here
47			*/
48			typedef __uint8_t u8;
49			typedef __uint16_t u16;
50			typedef __uint32_t u32;
51			#include <linux/ethtool.h>
52			#include <linux/sockios.h>
53	ats	1.32	#include <unistd.h>
54	pajs	1.1	#endif
55	ats	1.18	#ifdef ALLBSD
56	pajs	1.14	#include <sys/types.h>
57			#include <sys/socket.h>
58			#include <ifaddrs.h>
59			#include <net/if.h>
60	pajs	1.26	#include <net/if_media.h>
61			#include <sys/ioctl.h>
62	pajs	1.14	#endif
63	pajs	1.1
64	pajs	1.3	static network_stat_t *network_stats=NULL;
65			static int interfaces=0;
66	pajs	1.1
67	pajs	1.3	void network_stat_init(int start, int end, network_stat_t *net_stats){
68
69			for(net_stats+=start; start<end; start++){
70			net_stats->interface_name=NULL;
71			net_stats->tx=0;
72			net_stats->rx=0;
73			net_stats++;
74			}
75			}
76
77			network_stat_t network_stat_malloc(int needed_entries, int cur_entries, network_stat_t *net_stats){
78
79			if(net_stats==NULL){
80
81			if((net_stats=malloc(needed_entries * sizeof(network_stat_t)))==NULL){
82	pajs	1.1	return NULL;
83			}
84	pajs	1.3	network_stat_init(0, needed_entries, net_stats);
85			*cur_entries=needed_entries;
86
87	pajs	1.1	return net_stats;
88			}
89	pajs	1.3
90
91			if(*cur_entries<needed_entries){
92			net_stats=realloc(net_stats, (sizeof(network_stat_t)*needed_entries));
93			if(net_stats==NULL){
94	pajs	1.1	return NULL;
95			}
96	pajs	1.3	network_stat_init(*cur_entries, needed_entries, net_stats);
97			*cur_entries=needed_entries;
98	pajs	1.1	}
99
100			return net_stats;
101			}
102
103	pajs	1.3
104	pajs	1.1	network_stat_t get_network_stats(int entries){
105	pajs	1.6
106			static int sizeof_network_stats=0;
107			network_stat_t *network_stat_ptr;
108
109			#ifdef SOLARIS
110	pajs	1.1	kstat_ctl_t *kc;
111			kstat_t *ksp;
112			kstat_named_t *knp;
113	pajs	1.6	#endif
114	pajs	1.3
115	pajs	1.6	#ifdef LINUX
116			FILE *f;
117	pajs	1.12	/* Horrible big enough, but it should be easily big enough */
118	pajs	1.6	char line[8096];
119			regex_t regex;
120			regmatch_t line_match[4];
121	pajs	1.14	#endif
122	ats	1.18	#ifdef ALLBSD
123	pajs	1.14	struct ifaddrs net, net_ptr;
124			struct if_data *net_data;
125			#endif
126
127	ats	1.18	#ifdef ALLBSD
128	pajs	1.14	if(getifaddrs(&net) != 0){
129			return NULL;
130			}
131
132			interfaces=0;
133
134			for(net_ptr=net;net_ptr!=NULL;net_ptr=net_ptr->ifa_next){
135			if(net_ptr->ifa_addr->sa_family != AF_LINK) continue;
136			network_stats=network_stat_malloc((interfaces+1), &sizeof_network_stats, network_stats);
137			if(network_stats==NULL){
138			return NULL;
139			}
140			network_stat_ptr=network_stats+interfaces;
141
142			if(network_stat_ptr->interface_name!=NULL) free(network_stat_ptr->interface_name);
143			network_stat_ptr->interface_name=strdup(net_ptr->ifa_name);
144			if(network_stat_ptr->interface_name==NULL) return NULL;
145			net_data=(struct if_data *)net_ptr->ifa_data;
146			network_stat_ptr->rx=net_data->ifi_ibytes;
147			network_stat_ptr->tx=net_data->ifi_obytes;
148			network_stat_ptr->systime=time(NULL);
149			interfaces++;
150			}
151			freeifaddrs(net);
152	pajs	1.6	#endif
153	pajs	1.1
154	pajs	1.6	#ifdef SOLARIS
155	pajs	1.1	if ((kc = kstat_open()) == NULL) {
156			return NULL;
157			}
158
159	pajs	1.6	interfaces=0;
160	pajs	1.3
161	pajs	1.1	for (ksp = kc->kc_chain; ksp; ksp = ksp->ks_next) {
162			if (!strcmp(ksp->ks_class, "net")) {
163			kstat_read(kc, ksp, NULL);
164
165	pajs	1.7	#ifdef SOL7
166			#define RLOOKUP "rbytes"
167			#define WLOOKUP "obytes"
168			#define VALTYPE value.ui32
169			#else
170			#define RLOOKUP "rbytes64"
171			#define WLOOKUP "obytes64"
172			#define VALTYPE value.ui64
173			#endif
174
175			if((knp=kstat_data_lookup(ksp, RLOOKUP))==NULL){
176	pajs	1.1	/* Not a network interface, so skip to the next entry */
177			continue;
178			}
179	pajs	1.3
180			network_stats=network_stat_malloc((interfaces+1), &sizeof_network_stats, network_stats);
181	pajs	1.1	if(network_stats==NULL){
182			return NULL;
183			}
184			network_stat_ptr=network_stats+interfaces;
185	pajs	1.7	network_stat_ptr->rx=knp->VALTYPE;
186	pajs	1.1
187	pajs	1.7	if((knp=kstat_data_lookup(ksp, WLOOKUP))==NULL){
188	pajs	1.1	/* Not a network interface, so skip to the next entry */
189			continue;
190			}
191	pajs	1.7	network_stat_ptr->tx=knp->VALTYPE;
192	pajs	1.1	if(network_stat_ptr->interface_name!=NULL){
193			free(network_stat_ptr->interface_name);
194			}
195			network_stat_ptr->interface_name=strdup(ksp->ks_name);
196	pajs	1.3
197			network_stat_ptr->systime=time(NULL);
198	pajs	1.1	interfaces++;
199			}
200			}
201	pajs	1.2
202			kstat_close(kc);
203	pajs	1.6	#endif
204			#ifdef LINUX
205			f=fopen("/proc/net/dev", "r");
206			if(f==NULL){
207			return NULL;
208			}
209			/* read the 2 lines.. Its the title, so we dont care :) */
210			fgets(line, sizeof(line), f);
211			fgets(line, sizeof(line), f);
212
213
214			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){
215			return NULL;
216			}
217
218			interfaces=0;
219	pajs	1.1
220	pajs	1.6	while((fgets(line, sizeof(line), f)) != NULL){
221			if((regexec(&regex, line, 4, line_match, 0))!=0){
222			continue;
223			}
224			network_stats=network_stat_malloc((interfaces+1), &sizeof_network_stats, network_stats);
225			if(network_stats==NULL){
226			return NULL;
227			}
228			network_stat_ptr=network_stats+interfaces;
229
230			if(network_stat_ptr->interface_name!=NULL){
231			free(network_stat_ptr->interface_name);
232			}
233
234			network_stat_ptr->interface_name=get_string_match(line, &line_match[1]);
235			network_stat_ptr->rx=get_ll_match(line, &line_match[2]);
236			network_stat_ptr->tx=get_ll_match(line, &line_match[3]);
237			network_stat_ptr->systime=time(NULL);
238
239			interfaces++;
240			}
241	pajs	1.12	fclose(f);
242	pajs	1.13	regfree(&regex);
243	pajs	1.6
244			#endif
245	ats	1.20
246			#ifdef CYGWIN
247			return NULL;
248			#endif
249
250	pajs	1.1	*entries=interfaces;
251
252			return network_stats;
253	pajs	1.3	}
254
255	pajs	1.8	long long transfer_diff(long long new, long long old){
256	pajs	1.17	#if defined(SOL7) \|\| defined(LINUX) \|\| defined(FREEBSD)
257	ats	1.19	#define MAXVAL 4294967296LL
258	pajs	1.8	#else
259	ats	1.19	#define MAXVAL 18446744073709551616LL
260	pajs	1.8	#endif
261			long long result;
262	pajs	1.10	if(new>=old){
263	pajs	1.8	result = (new-old);
264			}else{
265			result = (MAXVAL+(new-old));
266			}
267
268			return result;
269
270			}
271
272	ats	1.24	network_stat_t get_network_stats_diff(int entries) {
273			static network_stat_t *diff = NULL;
274			static int diff_count = 0;
275			network_stat_t src, dest;
276			int i, j, new_count;
277
278			if (network_stats == NULL) {
279			/* No previous stats, so we can't calculate a difference. */
280			return get_network_stats(entries);
281	pajs	1.3	}
282
283	ats	1.24	/* Resize the results array to match the previous stats. */
284			diff = network_stat_malloc(interfaces, &diff_count, diff);
285			if (diff == NULL) {
286	pajs	1.3	return NULL;
287			}
288
289	ats	1.24	/* Copy the previous stats into the result. */
290			for (i = 0; i < diff_count; i++) {
291			src = &network_stats[i];
292			dest = &diff[i];
293	pajs	1.3
294	ats	1.24	if (dest->interface_name != NULL) {
295			free(dest->interface_name);
296	pajs	1.3	}
297	ats	1.24	dest->interface_name = strdup(src->interface_name);
298			dest->rx = src->rx;
299			dest->tx = src->tx;
300			dest->systime = src->systime;
301			}
302	pajs	1.3
303	ats	1.24	/* Get a new set of stats. */
304			if (get_network_stats(&new_count) == NULL) {
305	ats	1.21	return NULL;
306			}
307	pajs	1.3
308	ats	1.24	/* For each previous stat... */
309			for (i = 0; i < diff_count; i++) {
310			dest = &diff[i];
311
312			/* ... find the corresponding new stat ... */
313			for (j = 0; j < new_count; j++) {
314			/* Try the new stat in the same position first,
315			since that's most likely to be it. */
316			src = &network_stats[(i + j) % new_count];
317			if (strcmp(src->interface_name, dest->interface_name) == 0) {
318			break;
319			}
320			}
321			if (j == new_count) {
322			/* No match found. */
323			continue;
324	pajs	1.3	}
325
326	ats	1.24	/* ... and subtract the previous stat from it to get the
327			difference. */
328			dest->rx = transfer_diff(src->rx, dest->rx);
329			dest->tx = transfer_diff(src->tx, dest->tx);
330			dest->systime = src->systime - dest->systime;
331	pajs	1.3	}
332
333	ats	1.24	*entries = diff_count;
334			return diff;
335			}
336	pajs	1.25	/* NETWORK INTERFACE STATS */
337
338			void network_iface_stat_init(int start, int end, network_iface_stat_t *net_stats){
339
340			for(net_stats+=start; start<end; start++){
341			net_stats->interface_name=NULL;
342			net_stats->speed=0;
343	ats	1.31	net_stats->dup=UNKNOWN_DUPLEX;
344	pajs	1.25	net_stats++;
345			}
346			}
347
348			network_iface_stat_t network_iface_stat_malloc(int needed_entries, int cur_entries, network_iface_stat_t *net_stats){
349
350			if(net_stats==NULL){
351
352			if((net_stats=malloc(needed_entries * sizeof(network_iface_stat_t)))==NULL){
353			return NULL;
354			}
355			network_iface_stat_init(0, needed_entries, net_stats);
356			*cur_entries=needed_entries;
357
358			return net_stats;
359			}
360
361
362			if(*cur_entries<needed_entries){
363			net_stats=realloc(net_stats, (sizeof(network_iface_stat_t)*needed_entries));
364			if(net_stats==NULL){
365			return NULL;
366			}
367			network_iface_stat_init(*cur_entries, needed_entries, net_stats);
368			*cur_entries=needed_entries;
369			}
370
371			return net_stats;
372			}
373
374			network_iface_stat_t get_network_iface_stats(int entries){
375			static network_iface_stat_t *network_iface_stats;
376			network_iface_stat_t *network_iface_stat_ptr;
377			static int sizeof_network_iface_stats=0;
378	pajs	1.26	static int ifaces;
379	pajs	1.25
380			#ifdef SOLARIS
381			kstat_ctl_t *kc;
382			kstat_t *ksp;
383			kstat_named_t *knp;
384			#endif
385	pajs	1.26	#ifdef ALLBSD
386			struct ifaddrs net, net_ptr;
387			struct ifmediareq ifmed;
388			int s;
389			int x;
390			#endif
391	pajs	1.27	#ifdef LINUX
392			FILE *f;
393			/* Horrible big enough, but it should be easily big enough */
394			char line[8096];
395			void *eth_tool_cmd_buf;
396			int buf_size;
397			int sock;
398			#endif
399	pajs	1.26	ifaces = 0;
400			#ifdef ALLBSD
401			if(getifaddrs(&net) != 0){
402			return NULL;
403			}
404
405			if ((s = socket(AF_INET, SOCK_DGRAM, 0)) == NULL) return NULL;
406
407			for(net_ptr=net; net_ptr!=NULL; net_ptr=net_ptr->ifa_next){
408			if(net_ptr->ifa_addr->sa_family != AF_LINK) continue;
409			network_iface_stats=network_iface_stat_malloc((ifaces+1), &sizeof_network_iface_stats, network_iface_stats);
410			if(network_iface_stats==NULL){
411			return NULL;
412			}
413			network_iface_stat_ptr = network_iface_stats + ifaces;
414
415			memset(&ifmed, 0, sizeof(struct ifmediareq));
416			strlcpy(ifmed.ifm_name, net_ptr->ifa_name, sizeof(ifmed.ifm_name));
417			if(ioctl(s, SIOCGIFMEDIA, (caddr_t)&ifmed) == -1){
418			continue;
419			}
420
421			/* We may need to change this if we start doing wireless devices too */
422			if( (ifmed.ifm_active \| IFM_ETHER) != ifmed.ifm_active ){
423			/* Not a ETHER device */
424			continue;
425			}
426
427			if(network_iface_stat_ptr->interface_name != NULL) free(network_iface_stat_ptr->interface_name);
428			network_iface_stat_ptr->interface_name = strdup(net_ptr->ifa_name);
429			if(network_iface_stat_ptr->interface_name == NULL) return NULL;
430
431			/* Only intrested in the first 4 bits) - Assuming only ETHER devices */
432			x = ifmed.ifm_active & 0x0f;
433			switch(x){
434			/* 10 Mbit connections. Speedy :) */
435			case(IFM_10_T):
436			case(IFM_10_2):
437			case(IFM_10_5):
438			case(IFM_10_STP):
439			case(IFM_10_FL):
440			network_iface_stat_ptr->speed = 10;
441			break;
442			/* 100 Mbit conneections */
443			case(IFM_100_TX):
444			case(IFM_100_FX):
445			case(IFM_100_T4):
446			case(IFM_100_VG):
447			case(IFM_100_T2):
448			network_iface_stat_ptr->speed = 100;
449			break;
450			/* 1000 Mbit connections */
451			case(IFM_1000_SX):
452			case(IFM_1000_LX):
453			case(IFM_1000_CX):
454	ats	1.31	#if defined(FREEBSD) && !defined(FREEBSD5)
455	pajs	1.26	case(IFM_1000_TX):
456	tdb	1.28	case(IFM_1000_FX):
457	ats	1.31	#else
458			case(IFM_1000_T):
459	tdb	1.28	#endif
460	pajs	1.26	network_iface_stat_ptr->speed = 1000;
461			break;
462			/* We don't know what it is */
463			default:
464			network_iface_stat_ptr->speed = 0;
465			break;
466			}
467
468			if( (ifmed.ifm_active \| IFM_FDX) == ifmed.ifm_active ){
469			network_iface_stat_ptr->dup = FULL_DUPLEX;
470			}else if( (ifmed.ifm_active \| IFM_HDX) == ifmed.ifm_active ){
471			network_iface_stat_ptr->dup = HALF_DUPLEX;
472			}else{
473	ats	1.31	network_iface_stat_ptr->dup = UNKNOWN_DUPLEX;
474	pajs	1.26	}
475			ifaces++;
476			}
477			freeifaddrs(net);
478	pajs	1.30	close(s);
479	pajs	1.26	#endif
480	pajs	1.25
481			#ifdef SOLARIS
482			if ((kc = kstat_open()) == NULL) {
483			return NULL;
484			}
485
486			for (ksp = kc->kc_chain; ksp; ksp = ksp->ks_next) {
487			if (!strcmp(ksp->ks_class, "net")) {
488			kstat_read(kc, ksp, NULL);
489			if((knp=kstat_data_lookup(ksp, "ifspeed"))==NULL){
490			/* Not a network interface, so skip to the next entry */
491			continue;
492			}
493			network_iface_stats=network_iface_stat_malloc((ifaces+1), &sizeof_network_iface_stats, network_iface_stats);
494			if(network_iface_stats==NULL){
495			return NULL;
496			}
497	pajs	1.26	network_iface_stat_ptr = network_iface_stats + ifaces;
498	pajs	1.25	network_iface_stat_ptr->speed = knp->value.ui64 / (1000*1000);
499
500			if((knp=kstat_data_lookup(ksp, "link_duplex"))==NULL){
501			/* Not a network interface, so skip to the next entry */
502			continue;
503			}
504
505	pajs	1.33	network_iface_stat_ptr->dup = UNKNOWN_DUPLEX;
506	tdb	1.34	if(knp->value.ui32 == 2){
507	pajs	1.25	network_iface_stat_ptr->dup = FULL_DUPLEX;
508	pajs	1.33	}
509	tdb	1.34	if(knp->value.ui32 == 1){
510	pajs	1.25	network_iface_stat_ptr->dup = HALF_DUPLEX;
511			}
512
513	pajs	1.26	if(network_iface_stat_ptr->interface_name != NULL) free(network_iface_stat_ptr->interface_name);
514	pajs	1.25	network_iface_stat_ptr->interface_name = strdup(ksp->ks_name);
515	pajs	1.26	if(network_iface_stat_ptr->interface_name == NULL) return NULL;
516			ifaces++;
517	pajs	1.25	}
518			}
519			kstat_close(kc);
520
521			#endif
522	pajs	1.27	#ifdef LINUX
523
524			f = fopen("/proc/net/dev", "r");
525			if(f == NULL){
526			return NULL;
527			}
528
529			/* Setup stuff so we can do the ioctl to get the info */
530			if((sock = socket(AF_INET, SOCK_DGRAM, 0)) < 0){
531			return NULL;
532			}
533
534			buf_size = sizeof(struct ethtool_cmd);
535			eth_tool_cmd_buf = malloc(buf_size);
536			if(eth_tool_cmd_buf == NULL) return NULL;
537
538			/* Ignore first 2 lines.. Just headings */
539	pajs	1.29	if((fgets(line, sizeof(line), f)) == NULL) return NULL;
540			if((fgets(line, sizeof(line), f)) == NULL) return NULL;
541	pajs	1.27
542			while((fgets(line, sizeof(line), f)) != NULL){
543			char name, ptr;
544			struct ifreq ifr;
545			struct ethtool_cmd *ethcmd;
546			int err;
547
548			/* Get the interface name */
549			ptr = strchr(line, ':');
550			if (ptr == NULL) continue;
551			*ptr='\0';
552			name = line;
553			while(isspace(*(name))){
554			name++;
555			}
556
557			memset(&ifr, 0, sizeof(ifr));
558			memset(eth_tool_cmd_buf, 0, buf_size);
559			ifr.ifr_data = (caddr_t) eth_tool_cmd_buf;
560			strncpy(ifr.ifr_name, name, sizeof(ifr.ifr_name));
561
562	pajs	1.29	ethcmd = (struct ethtool_cmd *) ifr.ifr_data;
563	pajs	1.27	ethcmd->cmd = ETHTOOL_GSET;
564
565			err = ioctl(sock, SIOCETHTOOL, &ifr);
566			if(err < 0){
567			/* This could fail if the interface doesn't support the command. Carry
568			* on to the next :)
569			*/
570			continue;
571			}
572
573			/* We have a good interface to add */
574			network_iface_stats=network_iface_stat_malloc((ifaces+1), &sizeof_network_iface_stats, network_iface_stats);
575			if(network_iface_stats==NULL){
576			return NULL;
577			}
578			network_iface_stat_ptr = network_iface_stats + ifaces;
579			network_iface_stat_ptr->interface_name = strdup(name);
580			network_iface_stat_ptr->speed = ethcmd->speed;
581	ats	1.32	network_iface_stat_ptr->dup = UNKNOWN_DUPLEX;
582	pajs	1.27	if(ethcmd->duplex == 0x00){
583			network_iface_stat_ptr->dup = FULL_DUPLEX;
584			}
585			if(ethcmd->duplex == 0x01){
586			network_iface_stat_ptr->dup = HALF_DUPLEX;
587			}
588			ifaces++;
589			}
590	pajs	1.30	close(sock);
591	pajs	1.27	free(eth_tool_cmd_buf);
592			#endif
593	pajs	1.26	*entries = ifaces;
594	pajs	1.25	return network_iface_stats;
595			}
596