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 |
|
22 |
#ifdef HAVE_CONFIG_H |
23 |
#include "config.h" |
24 |
#endif |
25 |
|
26 |
#include <stdlib.h> |
27 |
#include <string.h> |
28 |
#include "statgrab.h" |
29 |
#include <time.h> |
30 |
#ifdef SOLARIS |
31 |
#include <kstat.h> |
32 |
#include <sys/sysinfo.h> |
33 |
#endif |
34 |
#ifdef LINUX |
35 |
#include <stdio.h> |
36 |
#include <sys/types.h> |
37 |
#include <regex.h> |
38 |
#include "tools.h" |
39 |
#endif |
40 |
#ifdef ALLBSD |
41 |
#include <sys/types.h> |
42 |
#include <sys/socket.h> |
43 |
#include <ifaddrs.h> |
44 |
#include <net/if.h> |
45 |
#endif |
46 |
|
47 |
static network_stat_t *network_stats=NULL; |
48 |
static int interfaces=0; |
49 |
|
50 |
void network_stat_init(int start, int end, network_stat_t *net_stats){ |
51 |
|
52 |
for(net_stats+=start; start<end; start++){ |
53 |
net_stats->interface_name=NULL; |
54 |
net_stats->tx=0; |
55 |
net_stats->rx=0; |
56 |
net_stats++; |
57 |
} |
58 |
} |
59 |
|
60 |
network_stat_t *network_stat_malloc(int needed_entries, int *cur_entries, network_stat_t *net_stats){ |
61 |
|
62 |
if(net_stats==NULL){ |
63 |
|
64 |
if((net_stats=malloc(needed_entries * sizeof(network_stat_t)))==NULL){ |
65 |
return NULL; |
66 |
} |
67 |
network_stat_init(0, needed_entries, net_stats); |
68 |
*cur_entries=needed_entries; |
69 |
|
70 |
return net_stats; |
71 |
} |
72 |
|
73 |
|
74 |
if(*cur_entries<needed_entries){ |
75 |
net_stats=realloc(net_stats, (sizeof(network_stat_t)*needed_entries)); |
76 |
if(net_stats==NULL){ |
77 |
return NULL; |
78 |
} |
79 |
network_stat_init(*cur_entries, needed_entries, net_stats); |
80 |
*cur_entries=needed_entries; |
81 |
} |
82 |
|
83 |
return net_stats; |
84 |
} |
85 |
|
86 |
|
87 |
network_stat_t *get_network_stats(int *entries){ |
88 |
|
89 |
static int sizeof_network_stats=0; |
90 |
network_stat_t *network_stat_ptr; |
91 |
|
92 |
#ifdef SOLARIS |
93 |
kstat_ctl_t *kc; |
94 |
kstat_t *ksp; |
95 |
kstat_named_t *knp; |
96 |
#endif |
97 |
|
98 |
#ifdef LINUX |
99 |
FILE *f; |
100 |
/* Horrible big enough, but it should be easily big enough */ |
101 |
char line[8096]; |
102 |
regex_t regex; |
103 |
regmatch_t line_match[4]; |
104 |
#endif |
105 |
#ifdef ALLBSD |
106 |
struct ifaddrs *net, *net_ptr; |
107 |
struct if_data *net_data; |
108 |
#endif |
109 |
|
110 |
#ifdef ALLBSD |
111 |
if(getifaddrs(&net) != 0){ |
112 |
return NULL; |
113 |
} |
114 |
|
115 |
interfaces=0; |
116 |
|
117 |
for(net_ptr=net;net_ptr!=NULL;net_ptr=net_ptr->ifa_next){ |
118 |
if(net_ptr->ifa_addr->sa_family != AF_LINK) continue; |
119 |
network_stats=network_stat_malloc((interfaces+1), &sizeof_network_stats, network_stats); |
120 |
if(network_stats==NULL){ |
121 |
return NULL; |
122 |
} |
123 |
network_stat_ptr=network_stats+interfaces; |
124 |
|
125 |
if(network_stat_ptr->interface_name!=NULL) free(network_stat_ptr->interface_name); |
126 |
network_stat_ptr->interface_name=strdup(net_ptr->ifa_name); |
127 |
if(network_stat_ptr->interface_name==NULL) return NULL; |
128 |
net_data=(struct if_data *)net_ptr->ifa_data; |
129 |
network_stat_ptr->rx=net_data->ifi_ibytes; |
130 |
network_stat_ptr->tx=net_data->ifi_obytes; |
131 |
network_stat_ptr->systime=time(NULL); |
132 |
interfaces++; |
133 |
} |
134 |
freeifaddrs(net); |
135 |
#endif |
136 |
|
137 |
#ifdef SOLARIS |
138 |
if ((kc = kstat_open()) == NULL) { |
139 |
return NULL; |
140 |
} |
141 |
|
142 |
interfaces=0; |
143 |
|
144 |
for (ksp = kc->kc_chain; ksp; ksp = ksp->ks_next) { |
145 |
if (!strcmp(ksp->ks_class, "net")) { |
146 |
kstat_read(kc, ksp, NULL); |
147 |
|
148 |
#ifdef SOL7 |
149 |
#define RLOOKUP "rbytes" |
150 |
#define WLOOKUP "obytes" |
151 |
#define VALTYPE value.ui32 |
152 |
#else |
153 |
#define RLOOKUP "rbytes64" |
154 |
#define WLOOKUP "obytes64" |
155 |
#define VALTYPE value.ui64 |
156 |
#endif |
157 |
|
158 |
if((knp=kstat_data_lookup(ksp, RLOOKUP))==NULL){ |
159 |
/* Not a network interface, so skip to the next entry */ |
160 |
continue; |
161 |
} |
162 |
|
163 |
network_stats=network_stat_malloc((interfaces+1), &sizeof_network_stats, network_stats); |
164 |
if(network_stats==NULL){ |
165 |
return NULL; |
166 |
} |
167 |
network_stat_ptr=network_stats+interfaces; |
168 |
network_stat_ptr->rx=knp->VALTYPE; |
169 |
|
170 |
if((knp=kstat_data_lookup(ksp, WLOOKUP))==NULL){ |
171 |
/* Not a network interface, so skip to the next entry */ |
172 |
continue; |
173 |
} |
174 |
network_stat_ptr->tx=knp->VALTYPE; |
175 |
if(network_stat_ptr->interface_name!=NULL){ |
176 |
free(network_stat_ptr->interface_name); |
177 |
} |
178 |
network_stat_ptr->interface_name=strdup(ksp->ks_name); |
179 |
|
180 |
network_stat_ptr->systime=time(NULL); |
181 |
interfaces++; |
182 |
} |
183 |
} |
184 |
|
185 |
kstat_close(kc); |
186 |
#endif |
187 |
#ifdef LINUX |
188 |
f=fopen("/proc/net/dev", "r"); |
189 |
if(f==NULL){ |
190 |
return NULL; |
191 |
} |
192 |
/* read the 2 lines.. Its the title, so we dont care :) */ |
193 |
fgets(line, sizeof(line), f); |
194 |
fgets(line, sizeof(line), f); |
195 |
|
196 |
|
197 |
if((regcomp(®ex, "^[[:space:]]*([^:]+):[[:space:]]*([[:digit:]]+)[[:space:]]+[[:digit:]]+[[:space:]]+[[:digit:]]+[[:space:]]+[[:digit:]]+[[:space:]]+[[:digit:]]+[[:space:]]+[[:digit:]]+[[:space:]]+[[:digit:]]+[[:space:]]+[[:digit:]]+[[:space:]]+([[:digit:]]+)", REG_EXTENDED))!=0){ |
198 |
return NULL; |
199 |
} |
200 |
|
201 |
interfaces=0; |
202 |
|
203 |
while((fgets(line, sizeof(line), f)) != NULL){ |
204 |
if((regexec(®ex, line, 4, line_match, 0))!=0){ |
205 |
continue; |
206 |
} |
207 |
network_stats=network_stat_malloc((interfaces+1), &sizeof_network_stats, network_stats); |
208 |
if(network_stats==NULL){ |
209 |
return NULL; |
210 |
} |
211 |
network_stat_ptr=network_stats+interfaces; |
212 |
|
213 |
if(network_stat_ptr->interface_name!=NULL){ |
214 |
free(network_stat_ptr->interface_name); |
215 |
} |
216 |
|
217 |
network_stat_ptr->interface_name=get_string_match(line, &line_match[1]); |
218 |
network_stat_ptr->rx=get_ll_match(line, &line_match[2]); |
219 |
network_stat_ptr->tx=get_ll_match(line, &line_match[3]); |
220 |
network_stat_ptr->systime=time(NULL); |
221 |
|
222 |
interfaces++; |
223 |
} |
224 |
fclose(f); |
225 |
regfree(®ex); |
226 |
|
227 |
#endif |
228 |
|
229 |
#ifdef CYGWIN |
230 |
return NULL; |
231 |
#endif |
232 |
|
233 |
*entries=interfaces; |
234 |
|
235 |
return network_stats; |
236 |
} |
237 |
|
238 |
long long transfer_diff(long long new, long long old){ |
239 |
#if defined(SOL7) || defined(LINUX) || defined(FREEBSD) |
240 |
#define MAXVAL 4294967296LL |
241 |
#else |
242 |
#define MAXVAL 18446744073709551616LL |
243 |
#endif |
244 |
long long result; |
245 |
if(new>=old){ |
246 |
result = (new-old); |
247 |
}else{ |
248 |
result = (MAXVAL+(new-old)); |
249 |
} |
250 |
|
251 |
return result; |
252 |
|
253 |
} |
254 |
|
255 |
network_stat_t *get_network_stats_diff(int *entries){ |
256 |
static network_stat_t *network_stats_diff=NULL; |
257 |
static int sizeof_net_stats_diff=0; |
258 |
network_stat_t *network_stats_ptr, *network_stats_diff_ptr; |
259 |
int ifaces, x, y; |
260 |
|
261 |
if(network_stats==NULL){ |
262 |
network_stats_ptr=get_network_stats(&ifaces); |
263 |
*entries=ifaces; |
264 |
return network_stats_ptr; |
265 |
} |
266 |
|
267 |
network_stats_diff=network_stat_malloc(interfaces, &sizeof_net_stats_diff, network_stats_diff); |
268 |
if(network_stats_diff==NULL){ |
269 |
return NULL; |
270 |
} |
271 |
|
272 |
network_stats_ptr=network_stats; |
273 |
network_stats_diff_ptr=network_stats_diff; |
274 |
|
275 |
for(ifaces=0;ifaces<interfaces;ifaces++){ |
276 |
if(network_stats_diff_ptr->interface_name!=NULL){ |
277 |
free(network_stats_diff_ptr->interface_name); |
278 |
} |
279 |
network_stats_diff_ptr->interface_name=strdup(network_stats_ptr->interface_name); |
280 |
network_stats_diff_ptr->tx=network_stats_ptr->tx; |
281 |
network_stats_diff_ptr->rx=network_stats_ptr->rx; |
282 |
network_stats_diff_ptr->systime=network_stats->systime; |
283 |
|
284 |
network_stats_ptr++; |
285 |
network_stats_diff_ptr++; |
286 |
} |
287 |
network_stats_ptr=get_network_stats(&ifaces); |
288 |
if (network_stats_ptr == NULL) { |
289 |
return NULL; |
290 |
} |
291 |
network_stats_diff_ptr=network_stats_diff; |
292 |
|
293 |
for(x=0;x<sizeof_net_stats_diff;x++){ |
294 |
|
295 |
if((strcmp(network_stats_diff_ptr->interface_name, network_stats_ptr->interface_name))==0){ |
296 |
network_stats_diff_ptr->tx = transfer_diff(network_stats_ptr->tx, network_stats_diff_ptr->tx); |
297 |
network_stats_diff_ptr->rx = transfer_diff(network_stats_ptr->rx, network_stats_diff_ptr->rx); |
298 |
network_stats_diff_ptr->systime = network_stats_ptr->systime - network_stats_diff_ptr->systime; |
299 |
}else{ |
300 |
|
301 |
network_stats_ptr=network_stats; |
302 |
for(y=0;y<ifaces;y++){ |
303 |
if((strcmp(network_stats_diff_ptr->interface_name, network_stats_ptr->interface_name))==0){ |
304 |
network_stats_diff_ptr->tx = transfer_diff(network_stats_ptr->tx, network_stats_diff_ptr->tx); |
305 |
network_stats_diff_ptr->rx = transfer_diff(network_stats_ptr->rx, network_stats_diff_ptr->rx); |
306 |
network_stats_diff_ptr->systime = network_stats_ptr->systime - network_stats_diff_ptr->systime; |
307 |
break; |
308 |
} |
309 |
|
310 |
network_stats_ptr++; |
311 |
} |
312 |
} |
313 |
|
314 |
network_stats_ptr++; |
315 |
network_stats_diff_ptr++; |
316 |
} |
317 |
|
318 |
*entries=sizeof_net_stats_diff; |
319 |
return network_stats_diff; |
320 |
} |
321 |
|