[补] winpcap编程
static void pcap_handle(u_char *user, const struct pcap_pkthdr *h, const u_char *buf) {static unsigned failCount = 0;
#ifndef NO_ARP
if (buf==0x88 && buf==0x8e) {
#endif
if (memcmp(destMAC, buf+6, 6)!=0 && startMode>2) /* 服务器MAC地址不符 */
return;
capBuf = buf;
if (buf==0x00 && buf==0x01 && buf==0x01) { /* 验证用户名 */
if (startMode < 3) {
memcpy(destMAC, buf+6, 6);
printf(_("** 认证MAC:\t%s\n"), formatHex(destMAC, 6));
startMode += 3; /* 标记为已获取 */
}
switchState(ID_IDENTITY);
}
else if (buf==0x00 && buf==0x01 && buf==0x04) /* 验证密码 */
switchState(ID_CHALLENGE);
else if (buf==0x00 && buf==0x03) {/* 认证成功 */
printf(_(">> 认证成功!\n"));
failCount = 0;
if (!(startMode%3 == 2)) {
getEchoKey(buf);
showRuijieMsg(buf, h->caplen);
}
if (dhcpMode==1 || dhcpMode==2) /* 二次认证第一次或者认证后 */
switchState(ID_DHCP);
else if (startMode%3 == 2)
switchState(ID_WAITECHO);
else
switchState(ID_ECHO);
}
else if (buf==0x00 && buf==0x04) {/* 认证失败或被踢下线 */
if (state==ID_WAITECHO || state==ID_ECHO) {
printf(_(">> 认证掉线，开始重连!\n"));
switchState(ID_START);
}
else if (buf!=0 || startMode%3==2) {
printf(_(">> 认证失败!\n"));
if (startMode%3 != 2)
showRuijieMsg(buf, h->caplen);
if (maxFail && ++failCount>=maxFail) {
printf(_(">> 连续认证失败%u次，退出认证。\n"), maxFail);
exit(EXIT_SUCCESS);
}
restart();
}
else
switchState(ID_START);
}
}
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