/**
* 向局域网某些计算机单独发送上线信息.
* @param sock udp socket
*/
void Command::DialUp(int sock)
{
struct sockaddr_in addr;
in_addr_t startip, endip, ipv4;
NetSegment *pns;
GSList *list, *tlist;
CreateCommand(IPMSG_DIALUPOPT | IPMSG_ABSENCEOPT | IPMSG_BR_ENTRY,
progdt.nickname);
ConvertEncode(progdt.encode);
CreateIptuxExtra(progdt.encode);
bzero(&addr, sizeof(addr));
addr.sin_family = AF_INET;
addr.sin_port = htons(IPTUX_DEFAULT_PORT);
//与某些代码片段的获取网段描述相冲突，必须复制出来使用
pthread_mutex_lock(&progdt.mutex);
list = progdt.CopyNetSegment();
pthread_mutex_unlock(&progdt.mutex);
tlist = list;
while (tlist) {
pns = (NetSegment *)tlist->data;
inet_pton(AF_INET, pns->startip, &startip);
startip = ntohl(startip);
inet_pton(AF_INET, pns->endip, &endip);
endip = ntohl(endip);
ipv4_order(&startip, &endip);
ipv4 = startip;
while (ipv4 <= endip) {
addr.sin_addr.s_addr = htonl(ipv4);
sendto(sock, buf, size, 0, (struct sockaddr *)&addr,
sizeof(addr));
g_usleep(999);
ipv4++;
}
tlist = g_slist_next(tlist);
}
for (tlist = list; tlist; tlist = g_slist_next(tlist))
delete (NetSegment *)tlist->data;
g_slist_free(list);
}
/**
* 获取局域网网段名称.
* @param ipv4 ipv4
* @return name
*/
char *ipv4_get_lan_name(in_addr_t ipv4)
{
/**
* @note 局域网网段划分，每两个为一组，以NULL标识结束.
*/
const char *localgroup[] = {
"10.0.0.0",
"10.255.255.255",
"172.16.0.0",
"172.31.255.255",
"192.168.0.0",
"192.168.255.255",
NULL
};
in_addr_t startip, endip;
uint8_t count;
char *ipstr;
ipv4 = ntohl(ipv4);
ipstr = NULL;
count = 0;
while (localgroup[count << 1]) {
inet_pton(AF_INET, localgroup[count << 1], &startip);
startip = ntohl(startip);
inet_pton(AF_INET, localgroup[(count << 1) + 1], &endip);
endip = ntohl(endip);
ipv4_order(&startip, &endip);
if (startip <= ipv4 && endip >= ipv4) {
ipstr = g_strdup_printf("%s~%s", localgroup[count << 1],
localgroup[(count << 1) + 1]);
break;
}
count++;
}
return ipstr;
}
