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 1.42 2004/02/14 12:22:45 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;
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){
                                /* 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;        
        int ifaces = 0;

#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

#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 = knp->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:	1.43
Committed:	Sat Feb 14 15:48:42 2004 UTC (20 years, 3 months ago) by ats
Content type:	text/plain
Branch:	MAIN
Changes since 1.42:	+3 -3 lines
Log Message:	ifaces doesn't need to be static.
#	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 1.42 2004/02/14 12:22:45 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	typedef __uint64_t u64;
52	#include <linux/ethtool.h>
53	#include <linux/sockios.h>
54	#include <unistd.h>
55	#endif
56	#ifdef ALLBSD
57	#include <sys/types.h>
58	#include <sys/socket.h>
59	#include <ifaddrs.h>
60	#include <net/if.h>
61	#include <net/if_media.h>
62	#include <sys/ioctl.h>
63	#endif
64
65	static network_stat_t *network_stats=NULL;
66	static int interfaces=0;
67
68	void network_stat_init(int start, int end, network_stat_t *net_stats){
69
70	for(net_stats+=start; start<end; start++){
71	net_stats->interface_name=NULL;
72	net_stats->tx=0;
73	net_stats->rx=0;
74	net_stats++;
75	}
76	}
77
78	network_stat_t network_stat_malloc(int needed_entries, int cur_entries, network_stat_t *net_stats){
79
80	if(net_stats==NULL){
81
82	if((net_stats=malloc(needed_entries * sizeof(network_stat_t)))==NULL){
83	return NULL;
84	}
85	network_stat_init(0, needed_entries, net_stats);
86	*cur_entries=needed_entries;
87
88	return net_stats;
89	}
90
91
92	if(*cur_entries<needed_entries){
93	net_stats=realloc(net_stats, (sizeof(network_stat_t)*needed_entries));
94	if(net_stats==NULL){
95	return NULL;
96	}
97	network_stat_init(*cur_entries, needed_entries, net_stats);
98	*cur_entries=needed_entries;
99	}
100
101	return net_stats;
102	}
103
104
105	network_stat_t get_network_stats(int entries){
106
107	static int sizeof_network_stats=0;
108	network_stat_t *network_stat_ptr;
109
110	#ifdef SOLARIS
111	kstat_ctl_t *kc;
112	kstat_t *ksp;
113	kstat_named_t *knp;
114	#endif
115
116	#ifdef LINUX
117	FILE *f;
118	/* Horrible big enough, but it should be easily big enough */
119	char line[8096];
120	regex_t regex;
121	regmatch_t line_match[4];
122	#endif
123	#ifdef ALLBSD
124	struct ifaddrs net, net_ptr;
125	struct if_data *net_data;
126	#endif
127
128	#ifdef ALLBSD
129	if(getifaddrs(&net) != 0){
130	return NULL;
131	}
132
133	interfaces=0;
134
135	for(net_ptr=net;net_ptr!=NULL;net_ptr=net_ptr->ifa_next){
136	if(net_ptr->ifa_addr->sa_family != AF_LINK) continue;
137	network_stats=network_stat_malloc((interfaces+1), &sizeof_network_stats, network_stats);
138	if(network_stats==NULL){
139	return NULL;
140	}
141	network_stat_ptr=network_stats+interfaces;
142
143	if(network_stat_ptr->interface_name!=NULL) free(network_stat_ptr->interface_name);
144	network_stat_ptr->interface_name=strdup(net_ptr->ifa_name);
145	if(network_stat_ptr->interface_name==NULL) return NULL;
146	net_data=(struct if_data *)net_ptr->ifa_data;
147	network_stat_ptr->rx=net_data->ifi_ibytes;
148	network_stat_ptr->tx=net_data->ifi_obytes;
149	network_stat_ptr->systime=time(NULL);
150	interfaces++;
151	}
152	freeifaddrs(net);
153	#endif
154
155	#ifdef SOLARIS
156	if ((kc = kstat_open()) == NULL) {
157	return NULL;
158	}
159
160	interfaces=0;
161
162	for (ksp = kc->kc_chain; ksp; ksp = ksp->ks_next) {
163	if (!strcmp(ksp->ks_class, "net")) {
164	kstat_read(kc, ksp, NULL);
165
166	#ifdef SOL7
167	#define RLOOKUP "rbytes"
168	#define WLOOKUP "obytes"
169	#define VALTYPE value.ui32
170	#else
171	#define RLOOKUP "rbytes64"
172	#define WLOOKUP "obytes64"
173	#define VALTYPE value.ui64
174	#endif
175
176	if((knp=kstat_data_lookup(ksp, RLOOKUP))==NULL){
177	/* Not a network interface, so skip to the next entry */
178	continue;
179	}
180
181	network_stats=network_stat_malloc((interfaces+1), &sizeof_network_stats, network_stats);
182	if(network_stats==NULL){
183	return NULL;
184	}
185	network_stat_ptr=network_stats+interfaces;
186	network_stat_ptr->rx=knp->VALTYPE;
187
188	if((knp=kstat_data_lookup(ksp, WLOOKUP))==NULL){
189	/* Not a network interface, so skip to the next entry */
190	continue;
191	}
192	network_stat_ptr->tx=knp->VALTYPE;
193	if(network_stat_ptr->interface_name!=NULL){
194	free(network_stat_ptr->interface_name);
195	}
196	network_stat_ptr->interface_name=strdup(ksp->ks_name);
197
198	network_stat_ptr->systime=time(NULL);
199	interfaces++;
200	}
201	}
202
203	kstat_close(kc);
204	#endif
205	#ifdef LINUX
206	f=fopen("/proc/net/dev", "r");
207	if(f==NULL){
208	return NULL;
209	}
210	/* read the 2 lines.. Its the title, so we dont care :) */
211	fgets(line, sizeof(line), f);
212	fgets(line, sizeof(line), f);
213
214
215	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){
216	return NULL;
217	}
218
219	interfaces=0;
220
221	while((fgets(line, sizeof(line), f)) != NULL){
222	if((regexec(&regex, line, 4, line_match, 0))!=0){
223	continue;
224	}
225	network_stats=network_stat_malloc((interfaces+1), &sizeof_network_stats, network_stats);
226	if(network_stats==NULL){
227	return NULL;
228	}
229	network_stat_ptr=network_stats+interfaces;
230
231	if(network_stat_ptr->interface_name!=NULL){
232	free(network_stat_ptr->interface_name);
233	}
234
235	network_stat_ptr->interface_name=get_string_match(line, &line_match[1]);
236	network_stat_ptr->rx=get_ll_match(line, &line_match[2]);
237	network_stat_ptr->tx=get_ll_match(line, &line_match[3]);
238	network_stat_ptr->systime=time(NULL);
239
240	interfaces++;
241	}
242	fclose(f);
243	regfree(&regex);
244
245	#endif
246
247	#ifdef CYGWIN
248	return NULL;
249	#endif
250
251	*entries=interfaces;
252
253	return network_stats;
254	}
255
256	long long transfer_diff(long long new, long long old){
257	#if defined(SOL7) \|\| defined(LINUX) \|\| defined(FREEBSD)
258	#define MAXVAL 4294967296LL
259	#else
260	#define MAXVAL 18446744073709551616LL
261	#endif
262	long long result;
263	if(new>=old){
264	result = (new-old);
265	}else{
266	result = (MAXVAL+(new-old));
267	}
268
269	return result;
270
271	}
272
273	network_stat_t get_network_stats_diff(int entries) {
274	static network_stat_t *diff = NULL;
275	static int diff_count = 0;
276	network_stat_t src, dest;
277	int i, j, new_count;
278
279	if (network_stats == NULL) {
280	/* No previous stats, so we can't calculate a difference. */
281	return get_network_stats(entries);
282	}
283
284	/* Resize the results array to match the previous stats. */
285	diff = network_stat_malloc(interfaces, &diff_count, diff);
286	if (diff == NULL) {
287	return NULL;
288	}
289
290	/* Copy the previous stats into the result. */
291	for (i = 0; i < diff_count; i++) {
292	src = &network_stats[i];
293	dest = &diff[i];
294
295	if (dest->interface_name != NULL) {
296	free(dest->interface_name);
297	}
298	dest->interface_name = strdup(src->interface_name);
299	dest->rx = src->rx;
300	dest->tx = src->tx;
301	dest->systime = src->systime;
302	}
303
304	/* Get a new set of stats. */
305	if (get_network_stats(&new_count) == NULL) {
306	return NULL;
307	}
308
309	/* For each previous stat... */
310	for (i = 0; i < diff_count; i++) {
311	dest = &diff[i];
312
313	/* ... find the corresponding new stat ... */
314	for (j = 0; j < new_count; j++) {
315	/* Try the new stat in the same position first,
316	since that's most likely to be it. */
317	src = &network_stats[(i + j) % new_count];
318	if (strcmp(src->interface_name, dest->interface_name) == 0) {
319	break;
320	}
321	}
322	if (j == new_count) {
323	/* No match found. */
324	continue;
325	}
326
327	/* ... and subtract the previous stat from it to get the
328	difference. */
329	dest->rx = transfer_diff(src->rx, dest->rx);
330	dest->tx = transfer_diff(src->tx, dest->tx);
331	dest->systime = src->systime - dest->systime;
332	}
333
334	*entries = diff_count;
335	return diff;
336	}
337	/* NETWORK INTERFACE STATS */
338
339	void network_iface_stat_init(int start, int end, network_iface_stat_t *net_stats){
340
341	for(net_stats+=start; start<end; start++){
342	net_stats->interface_name=NULL;
343	net_stats->speed=0;
344	net_stats->dup=UNKNOWN_DUPLEX;
345	net_stats++;
346	}
347	}
348
349	network_iface_stat_t network_iface_stat_malloc(int needed_entries, int cur_entries, network_iface_stat_t *net_stats){
350
351	if(net_stats==NULL){
352
353	if((net_stats=malloc(needed_entries * sizeof(network_iface_stat_t)))==NULL){
354	return NULL;
355	}
356	network_iface_stat_init(0, needed_entries, net_stats);
357	*cur_entries=needed_entries;
358
359	return net_stats;
360	}
361
362
363	if(*cur_entries<needed_entries){
364	net_stats=realloc(net_stats, (sizeof(network_iface_stat_t)*needed_entries));
365	if(net_stats==NULL){
366	return NULL;
367	}
368	network_iface_stat_init(*cur_entries, needed_entries, net_stats);
369	*cur_entries=needed_entries;
370	}
371
372	return net_stats;
373	}
374
375	network_iface_stat_t get_network_iface_stats(int entries){
376	static network_iface_stat_t *network_iface_stats;
377	network_iface_stat_t *network_iface_stat_ptr;
378	static int sizeof_network_iface_stats=0;
379	int ifaces = 0;
380
381	#ifdef SOLARIS
382	kstat_ctl_t *kc;
383	kstat_t *ksp;
384	kstat_named_t *knp;
385	#endif
386	#ifdef ALLBSD
387	struct ifaddrs net, net_ptr;
388	struct ifmediareq ifmed;
389	struct ifreq ifr;
390	int sock;
391	int x;
392	#endif
393	#ifdef LINUX
394	FILE *f;
395	/* Horrible big enough, but it should be easily big enough */
396	char line[8096];
397	int sock;
398	#endif
399
400	#ifdef ALLBSD
401	if(getifaddrs(&net) != 0){
402	return NULL;
403	}
404
405	if ((sock = socket(AF_INET, SOCK_DGRAM, 0)) == 0) 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(&ifr, 0, sizeof(ifr));
416	strncpy(ifr.ifr_name, net_ptr->ifa_name, sizeof(ifr.ifr_name));
417
418	if (ioctl(sock, SIOCGIFFLAGS, &ifr) < 0){
419	continue;
420	}
421	if((ifr.ifr_flags & IFF_UP) != 0){
422	network_iface_stat_ptr->up = 1;
423	}else{
424	network_iface_stat_ptr->up = 0;
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	network_iface_stat_ptr->speed = 0;
432	network_iface_stat_ptr->dup = UNKNOWN_DUPLEX;
433	ifaces++;
434
435	memset(&ifmed, 0, sizeof(struct ifmediareq));
436	strlcpy(ifmed.ifm_name, net_ptr->ifa_name, sizeof(ifmed.ifm_name));
437	if(ioctl(sock, SIOCGIFMEDIA, (caddr_t)&ifmed) == -1){
438	/* Not all interfaces support the media ioctls. */
439	continue;
440	}
441
442	/* We may need to change this if we start doing wireless devices too */
443	if( (ifmed.ifm_active \| IFM_ETHER) != ifmed.ifm_active ){
444	/* Not a ETHER device */
445	continue;
446	}
447
448	/* Only intrested in the first 4 bits) - Assuming only ETHER devices */
449	x = ifmed.ifm_active & 0x0f;
450	switch(x){
451	/* 10 Mbit connections. Speedy :) */
452	case(IFM_10_T):
453	case(IFM_10_2):
454	case(IFM_10_5):
455	case(IFM_10_STP):
456	case(IFM_10_FL):
457	network_iface_stat_ptr->speed = 10;
458	break;
459	/* 100 Mbit conneections */
460	case(IFM_100_TX):
461	case(IFM_100_FX):
462	case(IFM_100_T4):
463	case(IFM_100_VG):
464	case(IFM_100_T2):
465	network_iface_stat_ptr->speed = 100;
466	break;
467	/* 1000 Mbit connections */
468	case(IFM_1000_SX):
469	case(IFM_1000_LX):
470	case(IFM_1000_CX):
471	#if defined(FREEBSD) && !defined(FREEBSD5)
472	case(IFM_1000_TX):
473	case(IFM_1000_FX):
474	#else
475	case(IFM_1000_T):
476	#endif
477	network_iface_stat_ptr->speed = 1000;
478	break;
479	/* We don't know what it is */
480	default:
481	network_iface_stat_ptr->speed = 0;
482	break;
483	}
484
485	if( (ifmed.ifm_active \| IFM_FDX) == ifmed.ifm_active ){
486	network_iface_stat_ptr->dup = FULL_DUPLEX;
487	}else if( (ifmed.ifm_active \| IFM_HDX) == ifmed.ifm_active ){
488	network_iface_stat_ptr->dup = HALF_DUPLEX;
489	}else{
490	network_iface_stat_ptr->dup = UNKNOWN_DUPLEX;
491	}
492
493	}
494	freeifaddrs(net);
495	close(sock);
496	#endif
497
498	#ifdef SOLARIS
499	if ((kc = kstat_open()) == NULL) {
500	return NULL;
501	}
502
503	for (ksp = kc->kc_chain; ksp; ksp = ksp->ks_next) {
504	if (!strcmp(ksp->ks_class, "net")) {
505	kstat_read(kc, ksp, NULL);
506	if((knp=kstat_data_lookup(ksp, "ifspeed"))==NULL){
507	/* Not a network interface, so skip to the next entry */
508	continue;
509	}
510	network_iface_stats=network_iface_stat_malloc((ifaces+1), &sizeof_network_iface_stats, network_iface_stats);
511	if(network_iface_stats==NULL){
512	return NULL;
513	}
514	network_iface_stat_ptr = network_iface_stats + ifaces;
515	network_iface_stat_ptr->speed = knp->value.ui64 / (1000*1000);
516
517	if((knp=kstat_data_lookup(ksp, "link_up"))==NULL){
518	/* Not a network interface, so skip to the next entry */
519	continue;
520	}
521	/* Solaris has 1 for up, and 0 for not. As we do too */
522	network_iface_stat_ptr->up = knp->value.ui32;
523
524	if((knp=kstat_data_lookup(ksp, "link_duplex"))==NULL){
525	/* Not a network interface, so skip to the next entry */
526	continue;
527	}
528
529	network_iface_stat_ptr->dup = UNKNOWN_DUPLEX;
530	if(knp->value.ui32 == 2){
531	network_iface_stat_ptr->dup = FULL_DUPLEX;
532	}
533	if(knp->value.ui32 == 1){
534	network_iface_stat_ptr->dup = HALF_DUPLEX;
535	}
536
537	if(network_iface_stat_ptr->interface_name != NULL) free(network_iface_stat_ptr->interface_name);
538	network_iface_stat_ptr->interface_name = strdup(ksp->ks_name);
539	if(network_iface_stat_ptr->interface_name == NULL) return NULL;
540	ifaces++;
541	}
542	}
543	kstat_close(kc);
544
545	#endif
546	#ifdef LINUX
547	f = fopen("/proc/net/dev", "r");
548	if(f == NULL){
549	return NULL;
550	}
551
552	/* Setup stuff so we can do the ioctl to get the info */
553	if((sock = socket(AF_INET, SOCK_DGRAM, 0)) < 0){
554	return NULL;
555	}
556
557	/* Ignore first 2 lines.. Just headings */
558	if((fgets(line, sizeof(line), f)) == NULL) return NULL;
559	if((fgets(line, sizeof(line), f)) == NULL) return NULL;
560
561	while((fgets(line, sizeof(line), f)) != NULL){
562	char name, ptr;
563	struct ifreq ifr;
564	struct ethtool_cmd ethcmd;
565	int err;
566
567	/* Get the interface name */
568	ptr = strchr(line, ':');
569	if (ptr == NULL) continue;
570	*ptr='\0';
571	name = line;
572	while(isspace(*(name))){
573	name++;
574	}
575
576	memset(&ifr, 0, sizeof ifr);
577	strncpy(ifr.ifr_name, name, sizeof ifr.ifr_name);
578
579	if (ioctl(sock, SIOCGIFFLAGS, &ifr) < 0) {
580	continue;
581	}
582
583	/* We have a good interface to add */
584	network_iface_stats=network_iface_stat_malloc((ifaces+1), &sizeof_network_iface_stats, network_iface_stats);
585	if(network_iface_stats==NULL){
586	return NULL;
587	}
588	network_iface_stat_ptr = network_iface_stats + ifaces;
589	network_iface_stat_ptr->interface_name = strdup(name);
590	if ((ifr.ifr_flags & IFF_UP) != 0) {
591	network_iface_stat_ptr->up = 1;
592	} else {
593	network_iface_stat_ptr->up = 0;
594	}
595
596	memset(&ethcmd, 0, sizeof ethcmd);
597	ethcmd.cmd = ETHTOOL_GSET;
598	ifr.ifr_data = (caddr_t) &ethcmd;
599
600	err = ioctl(sock, SIOCETHTOOL, &ifr);
601	if (err == 0) {
602	network_iface_stat_ptr->speed = ethcmd.speed;
603
604	switch (ethcmd.duplex) {
605	case 0x00:
606	network_iface_stat_ptr->dup = FULL_DUPLEX;
607	break;
608	case 0x01:
609	network_iface_stat_ptr->dup = HALF_DUPLEX;
610	break;
611	default:
612	network_iface_stat_ptr->dup = UNKNOWN_DUPLEX;
613	}
614	} else {
615	/* Not all interfaces support the ethtool ioctl. */
616	network_iface_stat_ptr->speed = 0;
617	network_iface_stat_ptr->dup = UNKNOWN_DUPLEX;
618	}
619
620	ifaces++;
621	}
622	close(sock);
623	fclose(f);
624	#endif
625	*entries = ifaces;
626	return network_iface_stats;
627	}
628