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ported r838 from volker_dev

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git-svn-id: https://ssl.bulix.org/svn/lcd4linux/trunk@926 3ae390bd-cb1e-0410-b409-cd5a39f66f1f
This commit is contained in:
michael
2008-12-31 06:28:56 +00:00
parent 509ea3a22f
commit 9798fe8cbe
1 changed files with 36 additions and 20 deletions
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plugin_netinfo.c
+36 -20
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@@ -66,10 +66,10 @@ static int open_net(void)
if (socknr == -3)
return -1;
if (socknr == -2) {
socknr = socket(PF_INET, SOCK_STREAM, 0);
socknr = socket(PF_INET, SOCK_DGRAM, 0);
}
if (socknr == -1) {
error("%s: socket(PF_INET, SOCK_STREAM, 0) failed: %s", "plugin_netinfo", strerror(errno));
error("%s: socket(PF_INET, SOCK_DGRAM, 0) failed: %s", "plugin_netinfo", strerror(errno));
error(" deactivate plugin netinfo");
socknr = -3;
return -1;
@@ -81,33 +81,49 @@ static int open_net(void)
static void my_exists(RESULT * result, RESULT * arg1)
{
static int errcount = 0;
struct ifreq ifreq;
double value = 1.0; // netdev exists
char buf[10240];
struct ifconf ifcnf;
struct ifreq *ifreq;
int len;
double value = 0.0; // netdev doesn't exists
char devname[80];
if (socknr < 0) {
/* no open socket */
value = 0.0;
SetResult(&result, R_NUMBER, &value);
return;
}
strncpy(ifreq.ifr_name, R2S(arg1), sizeof(ifreq.ifr_name));
if (ioctl(socknr, SIOCGIFFLAGS, &ifreq) < 0) {
if (errno == ENODEV) {
/* device does not exists */
value = 0.0;
} else {
errcount++;
if (1 == errcount % 1000) {
error("%s: ioctl(FLAGS %s) failed: %s", "plugin_netinfo", ifreq.ifr_name, strerror(errno));
error(" (skip next 1000 errors)");
}
return;
}
ifcnf.ifc_len = sizeof(buf);
ifcnf.ifc_buf = buf;
if (ioctl(socknr, SIOCGIFCONF, &ifcnf) < 0) {
/* error getting list of devices */
error("%s: ioctl(IFCONF) for %s failed: %s", "plugin_netinfo", R2S(arg1), strerror(errno));
SetResult(&result, R_NUMBER, &value);
return;
}
if (0 == ifcnf.ifc_len) {
/* no interfaces found */
SetResult(&result, R_NUMBER, &value);
return;
}
/* device exists */
ifreq = (struct ifreq *) buf;
len = sizeof(struct ifreq);
strncpy(devname, R2S(arg1), sizeof(devname));
while (ifreq && *((char *) ifreq) && ((char *) ifreq) < buf + ifcnf.ifc_len) {
if (*((char *) ifreq) && strncmp(ifreq->ifr_name, devname, sizeof(devname)) == 0) {
/* found */
value = 1.0;
SetResult(&result, R_NUMBER, &value);
return;
}
(*(char **) &ifreq) += len;
}
/* device doesn't exists */
SetResult(&result, R_NUMBER, &value);
}