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 1.29 2004/02/13 14:39:34 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>
#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_DUPEX;
                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):
#ifdef FREEBSD5
                        case(IFM_1000_T):
#else
                        case(IFM_1000_TX):
                        case(IFM_1000_FX):
#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_DUPEX;
                }
                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;
                        }

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

                        if(network_iface_stat_ptr->interface_name != NULL) free(network_iface_stat_ptr->interface_name);
                        network_iface_stat_ptr->interface_name = strdup(ksp->ks_name);
                        if(network_iface_stat_ptr->interface_name == NULL) return NULL;
                        ifaces++;
                }
        }
        kstat_close(kc);
        
#endif  
#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_DUPEX;
                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:	1.30
Committed:	Fri Feb 13 14:41:05 2004 UTC (20 years, 3 months ago) by pajs
Content type:	text/plain
Branch:	MAIN
Changes since 1.29:	+3 -2 lines
Log Message:	Added a couple of forgotten close's.
#	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 1.29 2004/02/13 14:39:34 pajs 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	#endif
54	#ifdef ALLBSD
55	#include <sys/types.h>
56	#include <sys/socket.h>
57	#include <ifaddrs.h>
58	#include <net/if.h>
59	#include <net/if_media.h>
60	#include <sys/ioctl.h>
61	#endif
62
63	static network_stat_t *network_stats=NULL;
64	static int interfaces=0;
65
66	void network_stat_init(int start, int end, network_stat_t *net_stats){
67
68	for(net_stats+=start; start<end; start++){
69	net_stats->interface_name=NULL;
70	net_stats->tx=0;
71	net_stats->rx=0;
72	net_stats++;
73	}
74	}
75
76	network_stat_t network_stat_malloc(int needed_entries, int cur_entries, network_stat_t *net_stats){
77
78	if(net_stats==NULL){
79
80	if((net_stats=malloc(needed_entries * sizeof(network_stat_t)))==NULL){
81	return NULL;
82	}
83	network_stat_init(0, needed_entries, net_stats);
84	*cur_entries=needed_entries;
85
86	return net_stats;
87	}
88
89
90	if(*cur_entries<needed_entries){
91	net_stats=realloc(net_stats, (sizeof(network_stat_t)*needed_entries));
92	if(net_stats==NULL){
93	return NULL;
94	}
95	network_stat_init(*cur_entries, needed_entries, net_stats);
96	*cur_entries=needed_entries;
97	}
98
99	return net_stats;
100	}
101
102
103	network_stat_t get_network_stats(int entries){
104
105	static int sizeof_network_stats=0;
106	network_stat_t *network_stat_ptr;
107
108	#ifdef SOLARIS
109	kstat_ctl_t *kc;
110	kstat_t *ksp;
111	kstat_named_t *knp;
112	#endif
113
114	#ifdef LINUX
115	FILE *f;
116	/* Horrible big enough, but it should be easily big enough */
117	char line[8096];
118	regex_t regex;
119	regmatch_t line_match[4];
120	#endif
121	#ifdef ALLBSD
122	struct ifaddrs net, net_ptr;
123	struct if_data *net_data;
124	#endif
125
126	#ifdef ALLBSD
127	if(getifaddrs(&net) != 0){
128	return NULL;
129	}
130
131	interfaces=0;
132
133	for(net_ptr=net;net_ptr!=NULL;net_ptr=net_ptr->ifa_next){
134	if(net_ptr->ifa_addr->sa_family != AF_LINK) continue;
135	network_stats=network_stat_malloc((interfaces+1), &sizeof_network_stats, network_stats);
136	if(network_stats==NULL){
137	return NULL;
138	}
139	network_stat_ptr=network_stats+interfaces;
140
141	if(network_stat_ptr->interface_name!=NULL) free(network_stat_ptr->interface_name);
142	network_stat_ptr->interface_name=strdup(net_ptr->ifa_name);
143	if(network_stat_ptr->interface_name==NULL) return NULL;
144	net_data=(struct if_data *)net_ptr->ifa_data;
145	network_stat_ptr->rx=net_data->ifi_ibytes;
146	network_stat_ptr->tx=net_data->ifi_obytes;
147	network_stat_ptr->systime=time(NULL);
148	interfaces++;
149	}
150	freeifaddrs(net);
151	#endif
152
153	#ifdef SOLARIS
154	if ((kc = kstat_open()) == NULL) {
155	return NULL;
156	}
157
158	interfaces=0;
159
160	for (ksp = kc->kc_chain; ksp; ksp = ksp->ks_next) {
161	if (!strcmp(ksp->ks_class, "net")) {
162	kstat_read(kc, ksp, NULL);
163
164	#ifdef SOL7
165	#define RLOOKUP "rbytes"
166	#define WLOOKUP "obytes"
167	#define VALTYPE value.ui32
168	#else
169	#define RLOOKUP "rbytes64"
170	#define WLOOKUP "obytes64"
171	#define VALTYPE value.ui64
172	#endif
173
174	if((knp=kstat_data_lookup(ksp, RLOOKUP))==NULL){
175	/* Not a network interface, so skip to the next entry */
176	continue;
177	}
178
179	network_stats=network_stat_malloc((interfaces+1), &sizeof_network_stats, network_stats);
180	if(network_stats==NULL){
181	return NULL;
182	}
183	network_stat_ptr=network_stats+interfaces;
184	network_stat_ptr->rx=knp->VALTYPE;
185
186	if((knp=kstat_data_lookup(ksp, WLOOKUP))==NULL){
187	/* Not a network interface, so skip to the next entry */
188	continue;
189	}
190	network_stat_ptr->tx=knp->VALTYPE;
191	if(network_stat_ptr->interface_name!=NULL){
192	free(network_stat_ptr->interface_name);
193	}
194	network_stat_ptr->interface_name=strdup(ksp->ks_name);
195
196	network_stat_ptr->systime=time(NULL);
197	interfaces++;
198	}
199	}
200
201	kstat_close(kc);
202	#endif
203	#ifdef LINUX
204	f=fopen("/proc/net/dev", "r");
205	if(f==NULL){
206	return NULL;
207	}
208	/* read the 2 lines.. Its the title, so we dont care :) */
209	fgets(line, sizeof(line), f);
210	fgets(line, sizeof(line), f);
211
212
213	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){
214	return NULL;
215	}
216
217	interfaces=0;
218
219	while((fgets(line, sizeof(line), f)) != NULL){
220	if((regexec(&regex, line, 4, line_match, 0))!=0){
221	continue;
222	}
223	network_stats=network_stat_malloc((interfaces+1), &sizeof_network_stats, network_stats);
224	if(network_stats==NULL){
225	return NULL;
226	}
227	network_stat_ptr=network_stats+interfaces;
228
229	if(network_stat_ptr->interface_name!=NULL){
230	free(network_stat_ptr->interface_name);
231	}
232
233	network_stat_ptr->interface_name=get_string_match(line, &line_match[1]);
234	network_stat_ptr->rx=get_ll_match(line, &line_match[2]);
235	network_stat_ptr->tx=get_ll_match(line, &line_match[3]);
236	network_stat_ptr->systime=time(NULL);
237
238	interfaces++;
239	}
240	fclose(f);
241	regfree(&regex);
242
243	#endif
244
245	#ifdef CYGWIN
246	return NULL;
247	#endif
248
249	*entries=interfaces;
250
251	return network_stats;
252	}
253
254	long long transfer_diff(long long new, long long old){
255	#if defined(SOL7) \|\| defined(LINUX) \|\| defined(FREEBSD)
256	#define MAXVAL 4294967296LL
257	#else
258	#define MAXVAL 18446744073709551616LL
259	#endif
260	long long result;
261	if(new>=old){
262	result = (new-old);
263	}else{
264	result = (MAXVAL+(new-old));
265	}
266
267	return result;
268
269	}
270
271	network_stat_t get_network_stats_diff(int entries) {
272	static network_stat_t *diff = NULL;
273	static int diff_count = 0;
274	network_stat_t src, dest;
275	int i, j, new_count;
276
277	if (network_stats == NULL) {
278	/* No previous stats, so we can't calculate a difference. */
279	return get_network_stats(entries);
280	}
281
282	/* Resize the results array to match the previous stats. */
283	diff = network_stat_malloc(interfaces, &diff_count, diff);
284	if (diff == NULL) {
285	return NULL;
286	}
287
288	/* Copy the previous stats into the result. */
289	for (i = 0; i < diff_count; i++) {
290	src = &network_stats[i];
291	dest = &diff[i];
292
293	if (dest->interface_name != NULL) {
294	free(dest->interface_name);
295	}
296	dest->interface_name = strdup(src->interface_name);
297	dest->rx = src->rx;
298	dest->tx = src->tx;
299	dest->systime = src->systime;
300	}
301
302	/* Get a new set of stats. */
303	if (get_network_stats(&new_count) == NULL) {
304	return NULL;
305	}
306
307	/* For each previous stat... */
308	for (i = 0; i < diff_count; i++) {
309	dest = &diff[i];
310
311	/* ... find the corresponding new stat ... */
312	for (j = 0; j < new_count; j++) {
313	/* Try the new stat in the same position first,
314	since that's most likely to be it. */
315	src = &network_stats[(i + j) % new_count];
316	if (strcmp(src->interface_name, dest->interface_name) == 0) {
317	break;
318	}
319	}
320	if (j == new_count) {
321	/* No match found. */
322	continue;
323	}
324
325	/* ... and subtract the previous stat from it to get the
326	difference. */
327	dest->rx = transfer_diff(src->rx, dest->rx);
328	dest->tx = transfer_diff(src->tx, dest->tx);
329	dest->systime = src->systime - dest->systime;
330	}
331
332	*entries = diff_count;
333	return diff;
334	}
335	/* NETWORK INTERFACE STATS */
336
337	void network_iface_stat_init(int start, int end, network_iface_stat_t *net_stats){
338
339	for(net_stats+=start; start<end; start++){
340	net_stats->interface_name=NULL;
341	net_stats->speed=0;
342	net_stats->dup=UNKNOWN_DUPEX;
343	net_stats++;
344	}
345	}
346
347	network_iface_stat_t network_iface_stat_malloc(int needed_entries, int cur_entries, network_iface_stat_t *net_stats){
348
349	if(net_stats==NULL){
350
351	if((net_stats=malloc(needed_entries * sizeof(network_iface_stat_t)))==NULL){
352	return NULL;
353	}
354	network_iface_stat_init(0, needed_entries, net_stats);
355	*cur_entries=needed_entries;
356
357	return net_stats;
358	}
359
360
361	if(*cur_entries<needed_entries){
362	net_stats=realloc(net_stats, (sizeof(network_iface_stat_t)*needed_entries));
363	if(net_stats==NULL){
364	return NULL;
365	}
366	network_iface_stat_init(*cur_entries, needed_entries, net_stats);
367	*cur_entries=needed_entries;
368	}
369
370	return net_stats;
371	}
372
373	network_iface_stat_t get_network_iface_stats(int entries){
374	static network_iface_stat_t *network_iface_stats;
375	network_iface_stat_t *network_iface_stat_ptr;
376	static int sizeof_network_iface_stats=0;
377	static int ifaces;
378
379	#ifdef SOLARIS
380	kstat_ctl_t *kc;
381	kstat_t *ksp;
382	kstat_named_t *knp;
383	#endif
384	#ifdef ALLBSD
385	struct ifaddrs net, net_ptr;
386	struct ifmediareq ifmed;
387	int s;
388	int x;
389	#endif
390	#ifdef LINUX
391	FILE *f;
392	/* Horrible big enough, but it should be easily big enough */
393	char line[8096];
394	void *eth_tool_cmd_buf;
395	int buf_size;
396	int sock;
397	#endif
398	ifaces = 0;
399	#ifdef ALLBSD
400	if(getifaddrs(&net) != 0){
401	return NULL;
402	}
403
404	if ((s = socket(AF_INET, SOCK_DGRAM, 0)) == NULL) 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(&ifmed, 0, sizeof(struct ifmediareq));
415	strlcpy(ifmed.ifm_name, net_ptr->ifa_name, sizeof(ifmed.ifm_name));
416	if(ioctl(s, SIOCGIFMEDIA, (caddr_t)&ifmed) == -1){
417	continue;
418	}
419
420	/* We may need to change this if we start doing wireless devices too */
421	if( (ifmed.ifm_active \| IFM_ETHER) != ifmed.ifm_active ){
422	/* Not a ETHER device */
423	continue;
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	/* Only intrested in the first 4 bits) - Assuming only ETHER devices */
431	x = ifmed.ifm_active & 0x0f;
432	switch(x){
433	/* 10 Mbit connections. Speedy :) */
434	case(IFM_10_T):
435	case(IFM_10_2):
436	case(IFM_10_5):
437	case(IFM_10_STP):
438	case(IFM_10_FL):
439	network_iface_stat_ptr->speed = 10;
440	break;
441	/* 100 Mbit conneections */
442	case(IFM_100_TX):
443	case(IFM_100_FX):
444	case(IFM_100_T4):
445	case(IFM_100_VG):
446	case(IFM_100_T2):
447	network_iface_stat_ptr->speed = 100;
448	break;
449	/* 1000 Mbit connections */
450	case(IFM_1000_SX):
451	case(IFM_1000_LX):
452	case(IFM_1000_CX):
453	#ifdef FREEBSD5
454	case(IFM_1000_T):
455	#else
456	case(IFM_1000_TX):
457	case(IFM_1000_FX):
458	#endif
459	network_iface_stat_ptr->speed = 1000;
460	break;
461	/* We don't know what it is */
462	default:
463	network_iface_stat_ptr->speed = 0;
464	break;
465	}
466
467	if( (ifmed.ifm_active \| IFM_FDX) == ifmed.ifm_active ){
468	network_iface_stat_ptr->dup = FULL_DUPLEX;
469	}else if( (ifmed.ifm_active \| IFM_HDX) == ifmed.ifm_active ){
470	network_iface_stat_ptr->dup = HALF_DUPLEX;
471	}else{
472	network_iface_stat_ptr->dup = UNKNOWN_DUPEX;
473	}
474	ifaces++;
475	}
476	freeifaddrs(net);
477	close(s);
478	#endif
479
480	#ifdef SOLARIS
481	if ((kc = kstat_open()) == NULL) {
482	return NULL;
483	}
484
485	for (ksp = kc->kc_chain; ksp; ksp = ksp->ks_next) {
486	if (!strcmp(ksp->ks_class, "net")) {
487	kstat_read(kc, ksp, NULL);
488	if((knp=kstat_data_lookup(ksp, "ifspeed"))==NULL){
489	/* Not a network interface, so skip to the next entry */
490	continue;
491	}
492	network_iface_stats=network_iface_stat_malloc((ifaces+1), &sizeof_network_iface_stats, network_iface_stats);
493	if(network_iface_stats==NULL){
494	return NULL;
495	}
496	network_iface_stat_ptr = network_iface_stats + ifaces;
497	network_iface_stat_ptr->speed = knp->value.ui64 / (1000*1000);
498
499	if((knp=kstat_data_lookup(ksp, "link_duplex"))==NULL){
500	/* Not a network interface, so skip to the next entry */
501	continue;
502	}
503
504	if(knp->value.ui64 == 0){
505	network_iface_stat_ptr->dup = FULL_DUPLEX;
506	}else{
507	network_iface_stat_ptr->dup = HALF_DUPLEX;
508	}
509
510	if(network_iface_stat_ptr->interface_name != NULL) free(network_iface_stat_ptr->interface_name);
511	network_iface_stat_ptr->interface_name = strdup(ksp->ks_name);
512	if(network_iface_stat_ptr->interface_name == NULL) return NULL;
513	ifaces++;
514	}
515	}
516	kstat_close(kc);
517
518	#endif
519	#ifdef LINUX
520
521	f = fopen("/proc/net/dev", "r");
522	if(f == NULL){
523	return NULL;
524	}
525
526	/* Setup stuff so we can do the ioctl to get the info */
527	if((sock = socket(AF_INET, SOCK_DGRAM, 0)) < 0){
528	return NULL;
529	}
530
531	buf_size = sizeof(struct ethtool_cmd);
532	eth_tool_cmd_buf = malloc(buf_size);
533	if(eth_tool_cmd_buf == NULL) return NULL;
534
535	/* Ignore first 2 lines.. Just headings */
536	if((fgets(line, sizeof(line), f)) == NULL) return NULL;
537	if((fgets(line, sizeof(line), f)) == NULL) return NULL;
538
539	while((fgets(line, sizeof(line), f)) != NULL){
540	char name, ptr;
541	struct ifreq ifr;
542	struct ethtool_cmd *ethcmd;
543	int err;
544
545	/* Get the interface name */
546	ptr = strchr(line, ':');
547	if (ptr == NULL) continue;
548	*ptr='\0';
549	name = line;
550	while(isspace(*(name))){
551	name++;
552	}
553
554	memset(&ifr, 0, sizeof(ifr));
555	memset(eth_tool_cmd_buf, 0, buf_size);
556	ifr.ifr_data = (caddr_t) eth_tool_cmd_buf;
557	strncpy(ifr.ifr_name, name, sizeof(ifr.ifr_name));
558
559	ethcmd = (struct ethtool_cmd *) ifr.ifr_data;
560	ethcmd->cmd = ETHTOOL_GSET;
561
562	err = ioctl(sock, SIOCETHTOOL, &ifr);
563	if(err < 0){
564	/* This could fail if the interface doesn't support the command. Carry
565	* on to the next :)
566	*/
567	continue;
568	}
569
570	/* We have a good interface to add */
571	network_iface_stats=network_iface_stat_malloc((ifaces+1), &sizeof_network_iface_stats, network_iface_stats);
572	if(network_iface_stats==NULL){
573	return NULL;
574	}
575	network_iface_stat_ptr = network_iface_stats + ifaces;
576	network_iface_stat_ptr->interface_name = strdup(name);
577	network_iface_stat_ptr->speed = ethcmd->speed;
578	network_iface_stat_ptr->dup = UNKNOWN_DUPEX;
579	if(ethcmd->duplex == 0x00){
580	network_iface_stat_ptr->dup = FULL_DUPLEX;
581	}
582	if(ethcmd->duplex == 0x01){
583	network_iface_stat_ptr->dup = HALF_DUPLEX;
584	}
585	ifaces++;
586	}
587	close(sock);
588	free(eth_tool_cmd_buf);
589	#endif
590	*entries = ifaces;
591	return network_iface_stats;
592	}
593