CN106254246A - A kind of method of sniff wireless terminal MAC information and router - Google Patents
A kind of method of sniff wireless terminal MAC information and router Download PDFInfo
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- CN106254246A CN106254246A CN201610835639.0A CN201610835639A CN106254246A CN 106254246 A CN106254246 A CN 106254246A CN 201610835639 A CN201610835639 A CN 201610835639A CN 106254246 A CN106254246 A CN 106254246A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L45/00—Routing or path finding of packets in data switching networks
- H04L45/02—Topology update or discovery
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L45/00—Routing or path finding of packets in data switching networks
- H04L45/74—Address processing for routing
- H04L45/745—Address table lookup; Address filtering
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L61/00—Network arrangements, protocols or services for addressing or naming
- H04L61/09—Mapping addresses
- H04L61/10—Mapping addresses of different types
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L2101/00—Indexing scheme associated with group H04L61/00
- H04L2101/60—Types of network addresses
- H04L2101/618—Details of network addresses
- H04L2101/622—Layer-2 addresses, e.g. medium access control [MAC] addresses
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Abstract
The present invention provides method and the router of a kind of sniff wireless terminal MAC information, and wherein method includes: the wireless data frame entrance at router pre-installs MAC sniff functional module；When router receives wireless data frame, if MAC sniff function is opened, described MAC sniff functional module obtains the MAC information carried in described wireless data frame；If not finding described MAC information in described router, then described MAC information is stored in described router.The present invention can wireless terminal open radio function time, in the case of i.e. turning off screen, router also can sniff to wireless terminal MAC information.
Description
Technical field
Embodiment of the present invention relates to communication technique field, a kind of method particularly relating to sniff wireless terminal MAC information
And router.
Background technology
Along with the Internet and the fast development of wireless network, wireless network access point and panoramic wireless portable equipment
It is flooded with the life of people.Under such circumstances, wireless MAC (Media Access Control, media interviews control) is smelt
Spy can be big data wireless terminal provide provide powerful support for, such as: can be the police handle a case offer strong evidence prove certain
Individual so-and-so time somewhere, or to follow the trail of certain wireless terminal be also good selection；Can divide according to MAC information
Separate out terminal type, can substantially analyze people's living standard situation somewhere, provide strong reference for business investment
Data.Therefore, at big data age, the network insertion data of wireless terminal can be more and more important.
Wireless MAC sniff is sent by WIFI (Wireless Fidelity, the Wireless Fidelity) module in wireless terminal
Radio broadcasting signal carry out the perception of equipment, critical process be find WLAN (Wireless Local Area Network,
I.e. WLAN) and it is connected to it.First, wlan network carries SSID (Service Set by transmission
Identifier, service set) Beacons (beacon) frame notify its existence, then client is in order to connect WLAN,
Send Probe (detection) frame.
At present, radio function WiFi opens when, wireless terminal can send Probe frame, and at the entrance of Probe frame
Place can obtain the MAC information of wireless terminal, but in the case of wireless terminal screen is closed, even if radio function WiFi opens
Open, also will not send Probe frame, the MAC information of wireless terminal in the case of causing this, cannot be obtained.
Summary of the invention
For the problems referred to above, the purpose of embodiment of the present invention is to provide the side of a kind of sniff wireless terminal MAC information
Method and router, it is possible to wireless terminal open radio function time, in the case of i.e. turning off screen, also can sniff to wireless end
End MAC information.
For achieving the above object, embodiment of the present invention provides a kind of method of sniff wireless terminal MAC information, is applied to
Router, including: the wireless data frame entrance at router pre-installs MAC sniff functional module；When receiving wireless data frame,
If MAC sniff function is opened, described MAC sniff functional module obtains the MAC information carried in described wireless data frame；If
In described router, do not find described MAC information, then described MAC information is stored in described router.
Further, the described wireless data frame entrance at router pre-installs MAC sniff functional module, including: in route
The wireless data frame receiver module of device adds the entrance function of MAC sniff functional module, and described wireless data frame is received
The wireless data frame that module receives passes to the entrance function of described MAC sniff.
Further, described when router receives wireless data frame, if MAC sniff function is opened, described MAC smells
Visit power function and obtain the MAC information carried in described wireless data frame, including: when wireless data frame enters described wireless data
During frame receiver module, it is judged that whether described MAC sniff function opens；If described MAC sniff function is opened, the most described wireless
Frame enters the entrance function of described MAC sniff functional module, and the entrance function of described MAC sniff functional module obtains described
The MAC information carried in wireless data frame.
Further, if described not finding described MAC information in described router, then by described MAC information
It is stored in described router, including: using hash algorithm to search the Hash table of router, described Hash table is used for storing wireless
The MAC information of terminal；If not finding the MAC information of acquisition in described Hash table, then described MAC information is stored in
In the Hash table of described router.
Further, described method also includes: arrange the User space process of MAC sniff, described MAC the most in the router
The User space process of sniff includes message sink function and the intervalometer of described message sink function；Described message sink letter
Number monitors the configuration information of MAC sniff at described intervalometer during opening.
Further, described method also includes: if the configuration information listening to MAC sniff there occurs change, then close
The intervalometer of described message sink function, reruns described message sink function；If listening to the configuration information of MAC sniff
Do not change, when described MAC sniff function is opened, obtain the MAC information in the Hash table of described router, and will obtain
The MAC information taken is uploaded to described User space process；When closedown MAC sniff merit is closed or received to described MAC sniff function
Can message time, keep the operation of described User space process, close the intervalometer of described message sink function.
For achieving the above object, embodiment of the present invention also provides for the router of a kind of sniff wireless terminal MAC information, bag
Include: the first processing module, for pre-installing MAC sniff functional module at wireless data frame entrance；Second processing module, for when connecing
When receiving wireless data frame, if MAC sniff function is opened, described MAC sniff functional module obtains in described wireless data frame
The MAC information carried；3rd processing module, if for not finding described MAC information, then by institute in described router
State MAC information to be stored in described router.
Therefore, the method for a kind of sniff wireless terminal MAC information that embodiment of the present invention provides and router are logical
Cross and MAC sniff module is moved on to all wireless data frame porch from existing detection frame entrance, make wireless terminal open WiFi
And in the case of closedown screen also can sniff to wireless terminal MAC information；Router uses hash algorithm to search Hash table, searches
Quick and precisely；Additionally, when MAC sniff function is closed, wireless data frame cannot be introduced into MAC sniff module, farthest subtracts
The consumption of few CPU.
Accompanying drawing explanation
In order to be illustrated more clearly that embodiment of the present invention or technical scheme of the prior art, below will be to embodiment
Or the required accompanying drawing used is introduced the most simply in description of the prior art, it should be apparent that, the accompanying drawing in describing below is
Some embodiments of the present invention, for those of ordinary skill in the art, on the premise of not paying creative work, also
Other accompanying drawing can be obtained according to these accompanying drawings.
The schematic flow sheet of the method for the sniff wireless terminal MAC information that Fig. 1 provides for embodiment of the present invention；
One idiographic flow signal of the method for the sniff wireless terminal MAC information that Fig. 2 provides for embodiment of the present invention
Figure；
Another idiographic flow of the method for the sniff wireless terminal MAC information that Fig. 3 provides for embodiment of the present invention shows
It is intended to；
The schematic diagram of the system of the sniff wireless terminal MAC information that Fig. 4 provides for embodiment of the present invention；
The illustrative view of functional configuration of the router of the sniff wireless terminal MAC information that Fig. 5 provides for embodiment of the present invention.
Detailed description of the invention
For making the purpose of embodiment of the present invention, technical scheme and advantage clearer, implement below in conjunction with the present invention
Accompanying drawing in mode, is clearly and completely described the technical scheme in embodiment of the present invention, it is clear that described reality
The mode of executing is a part of embodiment of the present invention rather than whole embodiments.Based on the embodiment in the present invention, ability
The every other embodiment that territory those of ordinary skill is obtained under not making creative work premise, broadly falls into the present invention
The scope of protection.
Embodiment of the present invention provides a kind of method of sniff wireless terminal MAC information.Referring to Fig. 1, described method should
For router, including:
Step S11, the wireless data frame entrance at router pre-installs MAC sniff functional module；
Step S12, when receiving wireless data frame, if MAC sniff function is opened, described MAC sniff functional module
Obtain the MAC information carried in described wireless data frame；
Step S13, if not finding described MAC information in described router, is then stored in described MAC information
In described router.
One of the method for the sniff wireless terminal MAC information provided for embodiment of the present invention based on Fig. 1, Fig. 2 is concrete
Schematic flow sheet.As in figure 2 it is shown, described method is applied to router, may comprise steps of:
Step S21, the wireless data frame entrance at router pre-installs MAC sniff functional module.
In this step, in the wireless data frame entrance extended wireless data frame receipt module of router, such as wireless
Data frame receipt module loads wireless data frame receiver function IEEE80211_input (), further, at IEEE80211_
Input () adds the entrance function (STA_MAC_sniff ()) of MAC sniff functional module, and IEEE80211_input ()
WBUF and NI in RSSI (Received Signal Strength Indication, reception signal intensity instruction) pass
Give (STA_MAC_sniff ()).
Step S22, when receiving wireless data frame, router judges whether MAC sniff function opens, if it is, enter
Row step S23；If it does not, described wireless data frame is not processed.
In this step, when wireless data frame enters IEEE80211_input (), it may be judged whether unlatching MAC
Sniff function.
If do not opened, then this Frame cannot be introduced into STA_MAC_sniff (), to prevent from consuming cpu resource, to described
Wireless data frame does not processes.
Step S23, described wireless data frame enters MAC sniff functional module, and described MAC sniff functional module obtains described
The MAC information carried in wireless data frame.
In this step, if opening MAC sniff function, described wireless data frame enters in STA_MAC_sniff (),
STA_MAC_sniff () obtains the MAC information carried in described wireless data frame.
Step S24, it is judged that router has stored described MAC information, if it is, to described wireless data frame
MAC information does not processes；If it does not, enter step S25.
In this step, using Hash to search the Hash table of router, described Hash table is for storing the MAC of wireless terminal
Information.
According to the MAC Address in the MAC information obtained, it may be judged whether stored described MAC information.
If found, then Hash table has stored described MAC information, to the MAC information of described wireless data frame not
Process.
Step S25, is stored in described MAC information in the Hash table of described router.
In this step, if Hash table does not store described MAC information, described MAC information is stored in described route
In the Hash table of device.
Described MAC information may include that MAC, RSSI, timeSTAmp (timestamp) etc., wherein timeSTAmp kernel
In function do_gettimeofday () obtain kernel time, tv_sec is passed to timeSTAmp, such User space process get
Access time of terminal just can be calculated after terminal data.
Another idiographic flow of the method for the sniff wireless terminal MAC information that Fig. 3 provides for embodiment of the present invention shows
It is intended to.In embodiments of the present invention, as it is shown on figure 3, in order to prevent memory consumption excessive, it is also possible to comprise the following steps:
Step S31, arranges the User space process of MAC sniff, the User space process of described MAC sniff the most in the router
Include message sink function and the intervalometer of this message sink function.
In this step, the User space process of MAC sniff is set the most in the router, such as: macsniffer, is somebody's turn to do
The User space process of MAC sniff can include message sink function and for the intervalometer for the timing of message sink function,
This message sink function can e.g. getMacSnifferList ().Wherein this message sink function is for opening at intervalometer
Open period and monitor the configuration information of MAC sniff.
Step S32, whether the configuration information of monitoring reception to MAC sniff changes, if it is, carry out step S33；As
The most no, carry out step S34.
In this step, (the Master Data of MDM in router can be monitored by getMacSnifferList ()
Management, master data management) whether module or other modules receive the configuration information of MAC sniff and change.
The configuration information of MAC sniff may include that the cycle of server, FTP are opened, reported to MAC sniff function whether
The information such as the address of (File Transfer Protocol) server.
Step S33, timeing closing device, and rerun message sink function, then carry out S34.
In this step, if the configuration information listening to MAC sniff there occurs change, then timeing closing device, again transport
Row getMacSnifferList ().
Step S34, it is judged that whether MAC sniff opens, if it is, carry out step S35；If it does not, carry out step S37.
In this step, the configuration information of MAC sniff can be received by reading MDM module or other modules, sentence
Whether disconnected MAC sniff opens.
Step S35, obtains the MAC information in the Hash table of described router, the MAC information of acquisition is uploaded to described
The User space process of MAC sniff, and empty described HASH table.
In this step, can use BOARD_IOCTL function obtain Hash table from kernel the sniff that is stored in MAC
Information, is then uploaded to the User space process of MAC sniff by the MAC information of acquisition.
After the User space process of MAC sniff obtains the MAC information that the sniff being stored in kernel Hash table arrives, by this Hash table
Content is removed, and prevents memory consumption excessive.
Step S36, arranges intervalometer, it is judged that whether the duration of intervalometer reaches, if it is, return step S34；If
No, continue executing with step S36.
In this step, intervalometer is set, if time a length of X of intervalometer.
When intervalometer X duration arrives, return step S34 and judge whether MAC sniff opens；
When intervalometer X duration does not arrives, continue executing with step S36 and judge whether the duration of intervalometer reaches.
That is, each X duration repeats action above.
Step S37, keeps the operation of User space process, closes the intervalometer of message sink function in User space process.
In this step, if MAC sniff is closed, or message sink function listens to close disappearing of MAC sniff function
Breath, then close the intervalometer of getMacSnifferList ().Yes needing, User space process is still run, in order to
Time receive MAC sniff open message rerun getMacSnifferList ().
The schematic diagram of the system of the sniff wireless terminal MAC information that Fig. 4 provides for embodiment of the present invention.Refer to Fig. 4,
This system includes:
Client, is used for sending wireless data frame；
Router, in advance by the entrance of MAC sniff functional module to all wireless data frame of reception；When receiving visitor
During the wireless data frame that family end sends, if MAC sniff function is opened, described MAC sniff functional module obtains described wireless number
According to the MAC information carried in frame；If not finding described MAC information in described router, then described MAC information is deposited
Storage is in described router.
Described router adds (STA_MAC_sniff ()) in IEEE80211_input (), and IEEE80211_
(STA_MAC_sniff ()) is passed in the signal intensity instruction received in WBUF and NI of input ().When wireless data frame enters
IEEE80211_input () when arriving STA_MAC_sniff (), it is judged that whether described MAC sniff function opens；If it is described
MAC sniff function is not turned on, and the most described wireless data frame cannot be introduced into STA_MAC_sniff ()；If described MAC sniff merit
Can open, the most described wireless data frame enters STA_MAC_sniff (), and STA_MAC_sniff () obtains described wireless data frame
In the MAC information carried.
Described router uses Hash hash algorithm to search Hash table；If not finding acquisition in described Hash table
MAC information, then described MAC information is stored in the Hash table of described router.
The illustrative view of functional configuration of the router of the sniff wireless terminal MAC information that Fig. 5 provides for embodiment of the present invention.
Referring to Fig. 5, this router includes:
First processing module, for pre-installing MAC sniff functional module at wireless data frame entrance；
Specifically, in IEEE80211_input (), add (STA_MAC_sniff ()), and IEEE80211_input
(STA_MAC_sniff ()) is passed in the signal intensity instruction received in WBUF and NI of ().
Second processing module, for when receiving wireless data frame, if MAC sniff function is opened, described MAC sniff
Functional module obtains the MAC information carried in described wireless data frame；
Specifically, when wireless data frame enters IEEE80211_input () and arrives STA_MAC_sniff (), it is judged that
Whether described MAC sniff function opens；If described MAC sniff function is not turned on, the most described wireless data frame cannot be introduced into
STA_MAC_sniff()；If described MAC sniff function is opened, the most described wireless data frame enters STA_MAC_sniff () letter
Number, STA_MAC_sniff () obtains the MAC information carried in described wireless data frame.
3rd processing module, if for not finding described MAC information, then by described MAC in described router
Information is stored in described router；
Specifically, Hash hash algorithm is used to search the Hash table of router；If do not searched in described Hash table
To the MAC information obtained, then described MAC information is stored in the Hash table of described router.
Described router also includes:
Fourth processing module, for arranging the User space process of MAC sniff, the user of described MAC sniff in the router
State process includes message sink function and the intervalometer of described message sink function；Described message sink function is
GetMacSnifferList (), monitors the configuration information of MAC sniff at intervalometer during opening.
5th processing module, if there occurs change for listening to the configuration information of MAC sniff, then closes described message
The intervalometer of receiver function, reruns described message sink function；If the configuration information listening to MAC sniff does not occur
Change, when described MAC sniff function is opened, obtain the MAC information in the Hash table of described router, and the MAC that will obtain
Information is uploaded to described User space process；When described MAC sniff function is closed or receives the message of closedown MAC sniff function
Time, keep the operation of described User space process, close the intervalometer of described message sink function.
The system of the above-mentioned sniff wireless terminal MAC information related to and the router of sniff wireless terminal MAC information
In concrete ins and outs similar with in the method for sniff wireless terminal MAC information, therefore the most specifically repeat.
Therefore, method, the router of a kind of sniff wireless terminal MAC information that embodiment of the present invention provides and be
System, by MAC sniff function is moved on to all wireless data frame porch from existing detection frame entrance, makes wireless terminal open
WiFi and close in the case of screen also can sniff to wireless terminal MAC information；Router uses Hash hash algorithm to search
Hash table, searches quick and precisely；After User space process process obtains MAC information, the content in Hash table is removed, prevents internal memory
Consume excessive；Additionally, when MAC sniff function is closed, wireless data frame cannot be introduced into MAC sniff function, farthest subtracts
The consumption of few CPU.
Each embodiment in this specification all uses the mode gone forward one by one to describe, identical similar between each embodiment
Part see mutually, what each embodiment stressed is the difference with other embodiments.
Last it is noted that above the describing of various embodiments of the present invention is supplied to ability with the purpose described
Field technique personnel.It is not intended to exhaustive or is not intended to limit the invention to single disclosed embodiment.As above institute
Stating, various replacements and the change of the present invention will be apparent from for above-mentioned technology one of ordinary skill in the art.Therefore,
Although specifically discuss the embodiment of some alternatives, but other embodiment will be apparent from, or ability
Field technique personnel relatively easily draw.It is contemplated that be included in all replacements of this present invention discussed, amendment and
Change, and other embodiment in the spirit and scope of above-mentioned application that falls.
Claims (10)
1. a method for sniff wireless terminal MAC information, is applied to router, it is characterised in that including:
Wireless data frame entrance at router pre-installs MAC sniff functional module；
When router receives wireless data frame, if MAC sniff function is opened, described MAC sniff functional module obtains institute
State the MAC information carried in wireless data frame；
If not finding described MAC information in described router, then described MAC information is stored in described router
In.
The method of sniff wireless terminal MAC information the most according to claim 1, it is characterised in that described at router
Wireless data frame entrance prepackage MAC sniff functional module, including:
The entrance function of MAC sniff functional module is added in the wireless data frame receiver module of router, and described wireless
The wireless data frame that data frame receipt module receives passes to the entrance function of described MAC sniff functional module.
The method of sniff wireless terminal MAC information the most according to claim 2, it is characterised in that described connect when router
When receiving wireless data frame, if MAC sniff function is opened, described MAC sniff functional module obtains in described wireless data frame
The MAC information carried, including:
When wireless data frame enters described wireless data frame receiver module, it is judged that whether described MAC sniff function opens；
If described MAC sniff function is opened, the most described wireless data frame enters the entrance letter of described MAC sniff functional module
Number, the entrance function of described MAC sniff functional module obtains the MAC information carried in described wireless data frame.
The method of sniff wireless terminal MAC information the most according to claim 1, it is characterised in that if described described
Router does not find described MAC information, then described MAC information is stored in described router, including:
Using hash algorithm to search the Hash table of router, described Hash table is for storing the MAC information of wireless terminal；
If not finding the MAC information of acquisition in described Hash table, then described MAC information is stored in described router
Hash table in.
The method of sniff wireless terminal MAC information the most according to claim 1, it is characterised in that described method also includes:
Arranging the User space process of MAC sniff the most in the router, the User space process of described MAC sniff includes that message connects
Receiving function and the intervalometer of described message sink function, wherein said message sink function is for opening the phase at described intervalometer
Between monitor MAC sniff configuration information.
The method of sniff wireless terminal MAC information the most according to claim 5, it is characterised in that described method also includes:
If the configuration information listening to MAC sniff there occurs change, then close the intervalometer of described message sink function, again
Run described message sink function；
If the configuration information of MAC sniff does not change in snoop procedure, when described MAC sniff function is opened, obtain
MAC information in the Hash table of described router, and the MAC information of acquisition is uploaded to described User space process；As described MAC
When sniff function is closed or receives the message closing MAC sniff function, keep the operation of described User space process, close institute
State the intervalometer of message sink function.
7. the router of a sniff wireless terminal MAC information, it is characterised in that including:
First processing module, for pre-installing MAC sniff functional module at wireless data frame entrance；
Second processing module, for when receiving wireless data frame, if MAC sniff function is opened, described MAC sniff function
Module obtains the MAC information carried in described wireless data frame；
3rd processing module, if for not finding described MAC information, then by described MAC information in described router
It is stored in described router.
The router of sniff wireless terminal MAC information the most according to claim 7, it is characterised in that described first processes
Module, specifically for: in wireless data frame receiver module, add the entrance function of MAC sniff functional module, and described nothing
The entrance function of described MAC sniff functional module is passed in the signal intensity instruction that line data frame receipt module receives；
Described second processing module, specifically for: when wireless data frame enters described wireless data frame receiver module, it is judged that institute
State whether MAC sniff function opens；If described MAC sniff function is opened, the most described wireless data frame enters described MAC sniff
The entrance function of functional module, the entrance function of described MAC sniff functional module obtains the MAC carried in described wireless data frame
Information；
Described 3rd processing module, specifically for: using hash algorithm to search the Hash table of router, described Hash table is used for depositing
The MAC information of storage wireless terminal；If not finding the MAC information of acquisition in described Hash table, then by described MAC information
It is stored in the Hash table of described router.
The router of sniff wireless terminal MAC information the most according to claim 7, it is characterised in that described router is also
Including:
Fourth processing module, for arranging the User space process of MAC sniff in the router, the User space of described MAC sniff enters
Journey includes message sink function and the intervalometer of described message sink function；Described message sink function is for described fixed
Time device open during monitor MAC sniff configuration information.
The router of sniff wireless terminal MAC information the most according to claim 9, it is characterised in that described router is also
Including:
5th processing module, if there occurs change for listening to the configuration information of MAC sniff, then closes described message sink
The intervalometer of function, reruns described message sink function；If the configuration information listening to MAC sniff does not change
Become, when described MAC sniff function is opened, obtain the MAC information in the Hash table of described router, and the MAC letter that will obtain
Breath is uploaded to described User space process；When described MAC sniff function is closed or receives the message of closedown MAC sniff function
Time, keep the operation of described User space process, close the intervalometer of described message sink function.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108173668A (en) * | 2018-01-30 | 2018-06-15 | 北京坤腾畅联科技有限公司 | The method and apparatus that WIFI probes based on Openwrt are realized |
| CN109089301A (en) * | 2018-07-19 | 2018-12-25 | 深圳云盈网络科技有限公司 | network data processing system and method |
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