Method InitInnerIP

phxcomm/configparser/base_config.cpp:32–92

namespace phxsql {

char *PhxBaseConfig::InitInnerIP() {
    int sock_fd;
    static char addr[32] = { "" };
    char tmp_addr[32] = { "" };

    struct in_addr my_addr[2];
    struct ifreq stIfreq[10];
    const char *pInnerList[] = { "10.0.0.0", "10.255.255.255", "172.16.0.0", "172.31.255.255", "192.168.0.0",
            "192.168.255.255", "169.254.0.0", "169.254.255.255" };

    if (-1 == (sock_fd = socket(PF_INET, SOCK_DGRAM, 0))) {
        return addr;
    }

    struct ifconf ifc;
    memset(&ifc, 0, sizeof(ifc));
    ifc.ifc_len = sizeof(stIfreq);
    ifc.ifc_req = stIfreq;
    ioctl(sock_fd, SIOCGIFCONF, &ifc);

    bool is_eth1 = false;
    bool is_get_innerip = false;

    for (size_t i = 0; i < ifc.ifc_len / sizeof(ifreq); i++) {
        sockaddr_in staddr;
        memcpy(&staddr, &ifc.ifc_req[i].ifr_addr, sizeof(staddr));

        if (0 == strncasecmp(ifc.ifc_req[i].ifr_name, "eth1", strlen("eth1"))) {
            is_eth1 = true;
        }

        if (!is_eth1 && is_get_innerip) {
            continue;
        }

        for (size_t j = 0; j < sizeof(pInnerList) / sizeof(pInnerList[0]) / 2; j++) {
            inet_aton(pInnerList[j * 2], &my_addr[0]);
            my_addr[0].s_addr = htonl(my_addr[0].s_addr);
            inet_aton(pInnerList[j * 2 + 1], &my_addr[1]);
            my_addr[1].s_addr = htonl(my_addr[1].s_addr);

            unsigned long lTmp = htonl(staddr.sin_addr.s_addr);
            if (lTmp >= my_addr[0].s_addr && lTmp <= my_addr[1].s_addr) {
                if (is_eth1) {
                    inet_ntop(AF_INET, &staddr.sin_addr, addr, sizeof(addr));
                    close(sock_fd);
                    return addr;
                }
                is_get_innerip = true;
                memset(tmp_addr, 0x0, sizeof(tmp_addr));
                inet_ntop(AF_INET, &staddr.sin_addr, tmp_addr, sizeof(tmp_addr));
            }
        }
        is_eth1 = false;
    }

    memcpy(addr, tmp_addr, sizeof(tmp_addr));
    close(sock_fd);