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 1.39 2004/02/14 00:29:29 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>
#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;
        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
        ifaces = 0;
#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):
#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;
                }

        }       
        freeifaddrs(net);
        close(sock);
#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_up"))==NULL){
                                /* Not a network interface, so skip to the next entry */
                                continue;
                        }
                        /* Solaris has 1 for up, and 0 for not. As we do too */
                        network_iface_stat_ptr->up = value.ui32;

                        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;
        }

        /* 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:	1.40
Committed:	Sat Feb 14 00:47:24 2004 UTC (20 years, 3 months ago) by ats
Content type:	text/plain
Branch:	MAIN
Changes since 1.39:	+22 -18 lines
Log Message:	Rearrange the BSD network_iface_stat code in the same way as the Linux code; try SIOCGIFFLAGS first to find out whether the interface is up, then only fill in the other information if it's available.
#	Content
1	/*
2	* i-scream central monitoring system
3	* http://www.i-scream.org
4	* Copyright (C) 2000-2004 i-scream
5	*
6	* This library is free software; you can redistribute it and/or
7	* modify it under the terms of the GNU Lesser General Public
8	* License as published by the Free Software Foundation; either
9	* version 2.1 of the License, or (at your option) any later version.
10	*
11	* This library is distributed in the hope that it will be useful,
12	* but WITHOUT ANY WARRANTY; without even the implied warranty of
13	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14	* Lesser General Public License for more details.
15	*
16	* You should have received a copy of the GNU Lesser General Public
17	* License along with this library; if not, write to the Free Software
18	* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
19	* 02111-1307 USA
20	*
21	* $Id: network_stats.c,v 1.39 2004/02/14 00:29:29 ats Exp $
22	*/
23
24	#ifdef HAVE_CONFIG_H
25	#include "config.h"
26	#endif
27
28	#include <stdlib.h>
29	#include <string.h>
30	#include "statgrab.h"
31	#include <time.h>
32	#ifdef SOLARIS
33	#include <kstat.h>
34	#include <sys/sysinfo.h>
35	#endif
36	#ifdef LINUX
37	#include <stdio.h>
38	#include <sys/types.h>
39	#include <regex.h>
40	#include <sys/ioctl.h>
41	#include <sys/socket.h>
42	#include <net/if.h>
43	#include <ctype.h>
44	#include "tools.h"
45	/* 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	#include <unistd.h>
54	#endif
55	#ifdef ALLBSD
56	#include <sys/types.h>
57	#include <sys/socket.h>
58	#include <ifaddrs.h>
59	#include <net/if.h>
60	#include <net/if_media.h>
61	#include <sys/ioctl.h>
62	#endif
63
64	static network_stat_t *network_stats=NULL;
65	static int interfaces=0;
66
67	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	return NULL;
83	}
84	network_stat_init(0, needed_entries, net_stats);
85	*cur_entries=needed_entries;
86
87	return net_stats;
88	}
89
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	return NULL;
95	}
96	network_stat_init(*cur_entries, needed_entries, net_stats);
97	*cur_entries=needed_entries;
98	}
99
100	return net_stats;
101	}
102
103
104	network_stat_t get_network_stats(int entries){
105
106	static int sizeof_network_stats=0;
107	network_stat_t *network_stat_ptr;
108
109	#ifdef SOLARIS
110	kstat_ctl_t *kc;
111	kstat_t *ksp;
112	kstat_named_t *knp;
113	#endif
114
115	#ifdef LINUX
116	FILE *f;
117	/* Horrible big enough, but it should be easily big enough */
118	char line[8096];
119	regex_t regex;
120	regmatch_t line_match[4];
121	#endif
122	#ifdef ALLBSD
123	struct ifaddrs net, net_ptr;
124	struct if_data *net_data;
125	#endif
126
127	#ifdef ALLBSD
128	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	#endif
153
154	#ifdef SOLARIS
155	if ((kc = kstat_open()) == NULL) {
156	return NULL;
157	}
158
159	interfaces=0;
160
161	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	#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	/* Not a network interface, so skip to the next entry */
177	continue;
178	}
179
180	network_stats=network_stat_malloc((interfaces+1), &sizeof_network_stats, network_stats);
181	if(network_stats==NULL){
182	return NULL;
183	}
184	network_stat_ptr=network_stats+interfaces;
185	network_stat_ptr->rx=knp->VALTYPE;
186
187	if((knp=kstat_data_lookup(ksp, WLOOKUP))==NULL){
188	/* Not a network interface, so skip to the next entry */
189	continue;
190	}
191	network_stat_ptr->tx=knp->VALTYPE;
192	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
197	network_stat_ptr->systime=time(NULL);
198	interfaces++;
199	}
200	}
201
202	kstat_close(kc);
203	#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
220	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	fclose(f);
242	regfree(&regex);
243
244	#endif
245
246	#ifdef CYGWIN
247	return NULL;
248	#endif
249
250	*entries=interfaces;
251
252	return network_stats;
253	}
254
255	long long transfer_diff(long long new, long long old){
256	#if defined(SOL7) \|\| defined(LINUX) \|\| defined(FREEBSD)
257	#define MAXVAL 4294967296LL
258	#else
259	#define MAXVAL 18446744073709551616LL
260	#endif
261	long long result;
262	if(new>=old){
263	result = (new-old);
264	}else{
265	result = (MAXVAL+(new-old));
266	}
267
268	return result;
269
270	}
271
272	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	}
282
283	/* Resize the results array to match the previous stats. */
284	diff = network_stat_malloc(interfaces, &diff_count, diff);
285	if (diff == NULL) {
286	return NULL;
287	}
288
289	/* 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
294	if (dest->interface_name != NULL) {
295	free(dest->interface_name);
296	}
297	dest->interface_name = strdup(src->interface_name);
298	dest->rx = src->rx;
299	dest->tx = src->tx;
300	dest->systime = src->systime;
301	}
302
303	/* Get a new set of stats. */
304	if (get_network_stats(&new_count) == NULL) {
305	return NULL;
306	}
307
308	/* 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	}
325
326	/* ... 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	}
332
333	*entries = diff_count;
334	return diff;
335	}
336	/* 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	net_stats->dup=UNKNOWN_DUPLEX;
344	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	static int ifaces;
379
380	#ifdef SOLARIS
381	kstat_ctl_t *kc;
382	kstat_t *ksp;
383	kstat_named_t *knp;
384	#endif
385	#ifdef ALLBSD
386	struct ifaddrs net, net_ptr;
387	struct ifmediareq ifmed;
388	struct ifreq ifr;
389	int sock;
390	int x;
391	#endif
392	#ifdef LINUX
393	FILE *f;
394	/* Horrible big enough, but it should be easily big enough */
395	char line[8096];
396	int sock;
397	#endif
398	ifaces = 0;
399	#ifdef ALLBSD
400	if(getifaddrs(&net) != 0){
401	return NULL;
402	}
403
404	if ((sock = socket(AF_INET, SOCK_DGRAM, 0)) == 0) return NULL;
405
406	for(net_ptr=net; net_ptr!=NULL; net_ptr=net_ptr->ifa_next){
407	if(net_ptr->ifa_addr->sa_family != AF_LINK) continue;
408	network_iface_stats=network_iface_stat_malloc((ifaces+1), &sizeof_network_iface_stats, network_iface_stats);
409	if(network_iface_stats==NULL){
410	return NULL;
411	}
412	network_iface_stat_ptr = network_iface_stats + ifaces;
413
414	memset(&ifr, 0, sizeof(ifr));
415	strncpy(ifr.ifr_name, net_ptr->ifa_name, sizeof(ifr.ifr_name));
416
417	if (ioctl(sock, SIOCGIFFLAGS, &ifr) < 0){
418	continue;
419	}
420	if((ifr.ifr_flags & IFF_UP) != 0){
421	network_iface_stat_ptr->up = 1;
422	}else{
423	network_iface_stat_ptr->up = 0;
424	}
425
426	if (network_iface_stat_ptr->interface_name != NULL) free(network_iface_stat_ptr->interface_name);
427	network_iface_stat_ptr->interface_name = strdup(net_ptr->ifa_name);
428	if (network_iface_stat_ptr->interface_name == NULL) return NULL;
429
430	network_iface_stat_ptr->speed = 0;
431	network_iface_stat_ptr->dup = UNKNOWN_DUPLEX;
432	ifaces++;
433
434	memset(&ifmed, 0, sizeof(struct ifmediareq));
435	strlcpy(ifmed.ifm_name, net_ptr->ifa_name, sizeof(ifmed.ifm_name));
436	if(ioctl(sock, SIOCGIFMEDIA, (caddr_t)&ifmed) == -1){
437	/* Not all interfaces support the media ioctls. */
438	continue;
439	}
440
441	/* We may need to change this if we start doing wireless devices too */
442	if( (ifmed.ifm_active \| IFM_ETHER) != ifmed.ifm_active ){
443	/* Not a ETHER device */
444	continue;
445	}
446
447	/* Only intrested in the first 4 bits) - Assuming only ETHER devices */
448	x = ifmed.ifm_active & 0x0f;
449	switch(x){
450	/* 10 Mbit connections. Speedy :) */
451	case(IFM_10_T):
452	case(IFM_10_2):
453	case(IFM_10_5):
454	case(IFM_10_STP):
455	case(IFM_10_FL):
456	network_iface_stat_ptr->speed = 10;
457	break;
458	/* 100 Mbit conneections */
459	case(IFM_100_TX):
460	case(IFM_100_FX):
461	case(IFM_100_T4):
462	case(IFM_100_VG):
463	case(IFM_100_T2):
464	network_iface_stat_ptr->speed = 100;
465	break;
466	/* 1000 Mbit connections */
467	case(IFM_1000_SX):
468	case(IFM_1000_LX):
469	case(IFM_1000_CX):
470	#if defined(FREEBSD) && !defined(FREEBSD5)
471	case(IFM_1000_TX):
472	case(IFM_1000_FX):
473	#else
474	case(IFM_1000_T):
475	#endif
476	network_iface_stat_ptr->speed = 1000;
477	break;
478	/* We don't know what it is */
479	default:
480	network_iface_stat_ptr->speed = 0;
481	break;
482	}
483
484	if( (ifmed.ifm_active \| IFM_FDX) == ifmed.ifm_active ){
485	network_iface_stat_ptr->dup = FULL_DUPLEX;
486	}else if( (ifmed.ifm_active \| IFM_HDX) == ifmed.ifm_active ){
487	network_iface_stat_ptr->dup = HALF_DUPLEX;
488	}else{
489	network_iface_stat_ptr->dup = UNKNOWN_DUPLEX;
490	}
491
492	}
493	freeifaddrs(net);
494	close(sock);
495	#endif
496
497	#ifdef SOLARIS
498	if ((kc = kstat_open()) == NULL) {
499	return NULL;
500	}
501
502	for (ksp = kc->kc_chain; ksp; ksp = ksp->ks_next) {
503	if (!strcmp(ksp->ks_class, "net")) {
504	kstat_read(kc, ksp, NULL);
505	if((knp=kstat_data_lookup(ksp, "ifspeed"))==NULL){
506	/* Not a network interface, so skip to the next entry */
507	continue;
508	}
509	network_iface_stats=network_iface_stat_malloc((ifaces+1), &sizeof_network_iface_stats, network_iface_stats);
510	if(network_iface_stats==NULL){
511	return NULL;
512	}
513	network_iface_stat_ptr = network_iface_stats + ifaces;
514	network_iface_stat_ptr->speed = knp->value.ui64 / (1000*1000);
515
516	if((knp=kstat_data_lookup(ksp, "link_up"))==NULL){
517	/* Not a network interface, so skip to the next entry */
518	continue;
519	}
520	/* Solaris has 1 for up, and 0 for not. As we do too */
521	network_iface_stat_ptr->up = value.ui32;
522
523	if((knp=kstat_data_lookup(ksp, "link_duplex"))==NULL){
524	/* Not a network interface, so skip to the next entry */
525	continue;
526	}
527
528	network_iface_stat_ptr->dup = UNKNOWN_DUPLEX;
529	if(knp->value.ui32 == 2){
530	network_iface_stat_ptr->dup = FULL_DUPLEX;
531	}
532	if(knp->value.ui32 == 1){
533	network_iface_stat_ptr->dup = HALF_DUPLEX;
534	}
535
536	if(network_iface_stat_ptr->interface_name != NULL) free(network_iface_stat_ptr->interface_name);
537	network_iface_stat_ptr->interface_name = strdup(ksp->ks_name);
538	if(network_iface_stat_ptr->interface_name == NULL) return NULL;
539	ifaces++;
540	}
541	}
542	kstat_close(kc);
543
544	#endif
545	#ifdef LINUX
546	f = fopen("/proc/net/dev", "r");
547	if(f == NULL){
548	return NULL;
549	}
550
551	/* Setup stuff so we can do the ioctl to get the info */
552	if((sock = socket(AF_INET, SOCK_DGRAM, 0)) < 0){
553	return NULL;
554	}
555
556	/* Ignore first 2 lines.. Just headings */
557	if((fgets(line, sizeof(line), f)) == NULL) return NULL;
558	if((fgets(line, sizeof(line), f)) == NULL) return NULL;
559
560	while((fgets(line, sizeof(line), f)) != NULL){
561	char name, ptr;
562	struct ifreq ifr;
563	struct ethtool_cmd ethcmd;
564	int err;
565
566	/* Get the interface name */
567	ptr = strchr(line, ':');
568	if (ptr == NULL) continue;
569	*ptr='\0';
570	name = line;
571	while(isspace(*(name))){
572	name++;
573	}
574
575	memset(&ifr, 0, sizeof ifr);
576	strncpy(ifr.ifr_name, name, sizeof ifr.ifr_name);
577
578	if (ioctl(sock, SIOCGIFFLAGS, &ifr) < 0) {
579	continue;
580	}
581
582	/* We have a good interface to add */
583	network_iface_stats=network_iface_stat_malloc((ifaces+1), &sizeof_network_iface_stats, network_iface_stats);
584	if(network_iface_stats==NULL){
585	return NULL;
586	}
587	network_iface_stat_ptr = network_iface_stats + ifaces;
588	network_iface_stat_ptr->interface_name = strdup(name);
589	if ((ifr.ifr_flags & IFF_UP) != 0) {
590	network_iface_stat_ptr->up = 1;
591	} else {
592	network_iface_stat_ptr->up = 0;
593	}
594
595	memset(&ethcmd, 0, sizeof ethcmd);
596	ethcmd.cmd = ETHTOOL_GSET;
597	ifr.ifr_data = (caddr_t) &ethcmd;
598
599	err = ioctl(sock, SIOCETHTOOL, &ifr);
600	if (err == 0) {
601	network_iface_stat_ptr->speed = ethcmd.speed;
602
603	switch (ethcmd.duplex) {
604	case 0x00:
605	network_iface_stat_ptr->dup = FULL_DUPLEX;
606	break;
607	case 0x01:
608	network_iface_stat_ptr->dup = HALF_DUPLEX;
609	break;
610	default:
611	network_iface_stat_ptr->dup = UNKNOWN_DUPLEX;
612	}
613	} else {
614	/* Not all interfaces support the ethtool ioctl. */
615	network_iface_stat_ptr->speed = 0;
616	network_iface_stat_ptr->dup = UNKNOWN_DUPLEX;
617	}
618
619	ifaces++;
620	}
621	close(sock);
622	fclose(f);
623	#endif
624	*entries = ifaces;
625	return network_iface_stats;
626	}
627