Implement method and device of terminal call firewall
An implement method and device of a terminal call firewall is disclosed. According to the method, a call number is added into a blacklist list when it is determined that the call number is not in the blacklist list stored and an address list and it is determined that a call duration is less than a set call duration threshold. A device is disclosed for automatically blocking incoming calls to the terminal according to the method.
1. An implement method of a terminal call firewall, wherein the terminal call firewall comprises a processor coupled to memory, comprising:
receiving an incoming call at a terminal, wherein the incoming call lasts less than a predefined call duration threshold;
identifying a call number associated with the incoming call;
determining, using the processor, whether the call number is present in either a static blacklist stored in the terminal or an address list stored in the terminal;
when the call number is absent from both the static blacklist and the address list:
checking whether the call number is present in a dynamic blacklist stored in the terminal;
when the call number is present in the dynamic blacklist:
adding the call number and a current timestamp associated with the call number to the static blacklist and removing the call number from the dynamic blacklist; and
when the call number is not present in the dynamic blacklist:
adding the call number to the dynamic blacklist;
selecting an entry from the static blacklist, the entry including a second call number and associated timestamp for the second call number;
determining an existence time of the second call number in the static blacklist by comparing the timestamp associated with the second call number with a current timestamp;
when the existence time of the second call number in the static blacklist is longer than a predefined blacklist aging time threshold, deleting the selected entry from the static blacklist; and
repeating said selecting an entry from the static blacklist, determining an existence time of the second call number in the static blacklist, and deleting the selected entry from the static blacklist operations for each entry in the static blacklist.
2. The method according to claim 1 , further comprising:
after the call number is added to either the dynamic blacklist or the static blacklist, generating an entry in a firewall log for the addition of the call number.
3. A device of a terminal call firewall, wherein the device is for automatically blocking incoming calls to the terminal, the device comprising:
a processor; and
memory for storing one or more program modules to be executed by the processor, wherein the one or more program modules include functions for:
receiving an incoming call at a terminal, wherein the incoming call lasts less than a predefined call duration threshold;
identifying a call number associated with the incoming call;
determining whether the call number is present in either a static blacklist stored in the terminal or an address list stored in the terminal;
when the call number is absent from both the static blacklist and the address list:
checking whether the call number is present in a dynamic blacklist stored in the terminal;
when the call number is present in the dynamic blacklist:
adding the call number and a current timestamp associated with the call number to the static blacklist and removing the call number from the dynamic blacklist; and
when the call number is not present in the dynamic blacklist:
adding the call number to the dynamic blacklist;
selecting an entry from the static blacklist, the entry including a second call number and associated timestamp for the second call number;
determining an existence time of the second call number in the static blacklist by comparing the timestamp associated with the second call number with a current timestamp;
when the existence time of the second call number in the static blacklist is longer than a predefined blacklist aging time threshold, deleting the selected entry from the static blacklist; and
repeating said selecting an entry from the static blacklist, determining an existence time of the second call number in the static blacklist, and deleting the selected entry from the static blacklist operations for each entry in the static blacklist.
4. The device according to claim 3 , wherein the one or more program modules further include functions for: generating an entry in a firewall log for the addition of the call number after the call number is added to either the dynamic blacklist or the static blacklist.