CN105306448A - Method for accessing extranet data, car-mounted multimedia terminal and kernel Netfilter module of car-mounted multimedia terminal - Google Patents
Method for accessing extranet data, car-mounted multimedia terminal and kernel Netfilter module of car-mounted multimedia terminal Download PDFInfo
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- CN105306448A CN105306448A CN201510607263.3A CN201510607263A CN105306448A CN 105306448 A CN105306448 A CN 105306448A CN 201510607263 A CN201510607263 A CN 201510607263A CN 105306448 A CN105306448 A CN 105306448A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L63/00—Network architectures or network communication protocols for network security
- H04L63/08—Network architectures or network communication protocols for network security for authentication of entities
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
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Abstract
The invention discloses a method for accessing extranet data, a car-mounted multimedia terminal and a kernel Netfilter module of the car-mounted multimedia terminal. When a user accesses extranet data through the WIFI of the car-mounted multimedia terminal, the kernel Netfilter module carries out the following steps: receiving a request of the user for accessing the extranet data and intercepting the extranet data; judging whether identifying information of the user is contained in a released data link list, wherein the released data link list is used for caching identifying information of users to whom the extranet data are released; if the judgment result shows that the identifying information of the user is contained in the released data link list, releasing the extranet data to the user; if the judgment result shows that the identifying information of the user is not contained in the released data link list, intercepting the URL of the extranet data and carrying out 302 redirecting to the local portal. Through implementing the technical scheme of the invention, the problem of page caching can be solved perfectly and switchover between portal data and extranet data can be transited gradually.
Description
Technical field
The present invention relates to field of information communication, particularly relate to a kind of method, vehicle-mounted multimedia terminal and kernel Netfilter module thereof of accessing outer network data.
Background technology
Along with the development of Internet technology, Internet communication has been widely used in the every aspect of living, and causes powerful impact to the survival and development of traditional tv media.At present, no matter domestic be bus or long-distance bus, and all some are out-of-date repeatedly playing, and the program that cannot select, on some long-distance bus, even some months does not change video frequency program, plays the film that some are very old.What passenger was left with no alternative at all passively watches, having no enjoyment can say.
Along with development scientific and technological now, the Internet spreads to the every nook and cranny of society.Passenger wishes not only to need the vehicles easily, more wishes to dismiss the time boring by bus easily on journey.Vehicle-mounted multimedia terminal is meeting wireless business demand while, provides customizable brand advertising certification page and effective 3G/4G network, can also utilize WIFI local area network (LAN), makes a WIFI entertainment advertisement platform.Operator can store the content uploadings such as film, TV, music, amusement, consulting this locality to multimedia terminal.User is without the need to installing any software, by simple authentication mode, just can allow smart mobile phone, panel computer and other WIFI access terminals easily logging onto the Internet in mobile occasions such as public transport, long-distance big bus, trains by multimedia terminal, select to play the media content liked.
At present, when user is by multimedia terminal access outer net, after the WIFI connecting multimedia terminal, also need to carry out phone number certification, at present, on market, major part is door (portal) interception based on the exploitation of iptables application layer, such as, when user accesses outer network data, first clearance is determined whether by Iptables, when not letting pass, interception http data redirection is to local, eject portal homepage, after user clicks " on a key outer net " in portal homepage, the authentication state of this user of server lookup, if certification, then let pass, if unverified, then eject the portal website's page comprising " phone number certification ", when after user's input handset number and identifying code, judge that whether certification is effective by certificate server, when effective, write iptables rule, lets pass.But such mode is for the user of certification, and when it clicks the outer web page before certification, door homepage of being still held as a hostage, therefore with page cache problem, needs user manually to remove browser rs cache, extreme influence Consumer's Experience.
Summary of the invention
The technical problem to be solved in the present invention is, for the above-mentioned defect that there is page cache problem of prior art, provides a kind of method, vehicle-mounted multimedia terminal and kernel Netfilter module thereof of accessing outer network data, perfectly can solve page cache problem.
The technical solution adopted for the present invention to solve the technical problems is: construct a kind of method of accessing outer network data, and when user accesses outer network data by the WIFI of vehicle-mounted multimedia terminal, kernel Netfilter module carries out following steps:
Receive the request that user accesses outer network data, and tackle described outer network data;
Judge the identification information whether comprising described user in clearance data link table, wherein, described clearance data link table is used for buffer memory and has let pass the identification information of user;
When judging to comprise the identification information of described user, to let pass described outer network data to described user;
When judging not comprise the identification information of described user, intercept the URL of described outer network data, and 302 are redirected to local door.
Preferably, when judging not comprise the identification information of described user, kernel Netfilter module also carries out following steps:
Judge whether described user carries out certification according to verify data chained list, and when judging certification, intercept the URL of described outer network data, and 302 are redirected to the local door comprising the first control; When judging unverified, intercept the URL of described outer network data, and 302 are redirected to the local door comprising the second control, wherein, described verify data chained list is for the identification information of buffer memory authenticated user;
After user triggers the first control, by the identification information of described user stored in described clearance data link table;
When user triggers the second control, and after input authentication information, request authentication server judges that described authentication information is whether effective, and when effective, by described in the identification information of described user stored in verify data chained list.
Preferably, when user connects the WIFI of vehicle-mounted multimedia terminal, according to the identification information of detected user, request authentication server judges whether described user carries out certification, and when certification, kernel Netfilter module by the described identification information of described user stored in verify data chained list.
Preferably, when judging not comprise the identification information of described user, kernel Netfilter module request certificate server judges whether described user carries out certification, and when certification, by the identification information of described user stored in verify data chained list.
Preferably, described first control is the button clicking online for user; Described second control comprises phone number input frame and identifying code input frame.
The present invention also constructs a kind of kernel Netfilter module of vehicle-mounted multimedia terminal, comprising:
Request receiving module, accesses the request of outer network data for receiving user, and tackles described outer network data;
Clearance judge module, the outer network data of the identification information for judging whether to comprise in clearance data link table described user, wherein, described clearance data link table is used for buffer memory and has let pass the identification information of user;
Clearance module, for when judging to comprise the identification information of described user, to let pass described outer network data to described user;
Blocking module, for when judging not comprise the identification information of described user, intercept the URL of described outer network data, and 302 is redirected to local door.
Preferably, also comprise authentication determination module, first stored in module, second stored in module and authentication request module, described blocking module comprises the first interception unit and the second interception unit, and,
According to verify data chained list, described authentication determination module, for when judging not comprise the identification information of described user, judges whether described user carries out certification, wherein, described verify data chained list is for the identification information of buffer memory authenticated user;
Described first interception unit, for when judging to have carried out certification, intercept the URL of described outer network data, and 302 is redirected to the local door comprising the first control;
Described second interception unit, for when judging not carry out certification, intercept the URL of described outer network data, and 302 is redirected to the local door comprising the second control;
Described first stored in module, after triggering the first control as user, by the identification information of described user stored in described clearance data link table;
Authentication request module, for triggering the second control as user, and after input authentication information, request authentication server judges that whether described authentication information is effective;
Described second stored in module, for when certificate server judges effective, by the identification information of described user stored in described verify data chained list.
The present invention also constructs a kind of vehicle-mounted multimedia terminal, comprises above-described kernel Netfilter module.
Preferably, also comprise ARP detector and authentication module, and,
Described ARP detector, during for connecting the WIFI of vehicle-mounted multimedia terminal user, the identification information of detecting user;
Described authentication module, for according to described identification information, request authentication server judges whether described user carries out certification, and when certification, by described identification-information reporting to kernel Netfilter module;
Described second stored in module, also for by received described identification information stored in verify data chained list.
Preferably, described first control is the button clicking online for user; Described second control comprises phone number input frame and identifying code input frame.
Implement technical scheme of the present invention, the redirected mode that kernel Netfilter module adopts 302 to be redirected, and 302 to be redirected be provisional, therefore perfect can solve page cache problem, mild transition door user data and the switching of outer network data.
Further, the first authentication state of active inquiring user, different portal page is ejected again according to the difference of its authentication state, like this, for unverified user, its can directly in ejected portal page input authentication information carry out certification, compared to existing technology, shorten the user authentication time, adding users is experienced.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the invention will be further described, in accompanying drawing:
Fig. 1 is the flow chart that user of the present invention accesses the embodiment of the method one of outer network data;
Fig. 2 is the flow chart of step S4 embodiment one in Fig. 1;
Fig. 3 is the logic diagram of the kernel Netfilter module embodiments one of vehicle-mounted multimedia terminal of the present invention;
Fig. 4 is the logic diagram of the kernel Netfilter module embodiments two of vehicle-mounted multimedia terminal of the present invention;
Fig. 5 is the logic diagram of vehicle-mounted multimedia terminal embodiment one of the present invention.
Embodiment
Fig. 1 is the flow chart that user of the present invention accesses the embodiment of the method one of outer network data, and in this embodiment, when user accesses outer network data by the WIFI of vehicle-mounted multimedia terminal, kernel Netfilter module carries out following steps:
S1. receive the request that user accesses outer network data, and tackle described outer network data;
S2. judge whether to comprise in clearance data link table the outer network data of identification information of described user, if so, then perform step S3; If not, then perform step S4, wherein, described clearance data link table is used for buffer memory and has let pass the identification information of user;
S3. to let pass described outer network data to described user;
S4. intercept the URL of described outer network data, and 302 are redirected to local door, it should be noted that, this step needs simulation TCP three-way handshake data to return.
Implement the technical scheme of this embodiment, the redirected mode that kernel Netfilter module adopts 302 to be redirected, and 302 to be redirected be interim, therefore perfect can solve page cache problem, mild transition door user data and the switching of outer network data.
Fig. 2 is the flow chart of step S4 embodiment one in Fig. 1, and in this embodiment, step S4 specifically comprises:
S41. judge whether described user carries out certification according to verify data chained list, if so, then perform step S42; If not, then perform step S44, wherein, described verify data chained list is for the identification information of buffer memory authenticated user;
S42. intercept the URL of described outer network data, and 302 are redirected to the local door comprising the first control, wherein, this first control is such as clicking the button of online for user;
S43. after user triggers the first control, such as, after user clicks the button of " a key online ", the identification information (being such as MAC Address) of described user stored in described clearance data link table, then terminates by kernel Netfilter module;
S44. intercept the URL of described outer network data, and 302 are redirected to the local door comprising the second control, wherein, this second control such as comprises phone number input frame and identifying code input frame;
S45. when user triggers the second control, and after input authentication information, that is, user's input handset number in phone number input frame, after the identifying code that input authentication server returns in identifying code input frame, request authentication server judges that whether described authentication information is effective;
S46., when certificate server judges effective, by the identification information of described user stored in described verify data chained list, then terminate.
Implement the technical scheme of this embodiment, for the user do not let pass, the first authentication state of active inquiring user, different portal page is ejected again, like this, for unverified user according to the difference of its authentication state, its can directly in ejected portal page input authentication information carry out certification, compared to existing technology, shorten the user authentication time, adding users is experienced.
On the basis of above-described embodiment, further, when user connects the WIFI of vehicle-mounted multimedia terminal, following steps are carried out:
S01. detect the identification information of user, whether in this step, using ARP detector to detect has new user to connect WIFI, when having detected new user and having connected, according to IP address acquisition MAC Address;
S02. according to described identification information, request authentication server judges whether described user carries out certification, and when certification, by described identification-information reporting to kernel Netfilter module;
S03. kernel Netfilter module by received described identification information stored in verify data chained list.
In this embodiment, carry out certification when user connects WIFI with regard to active request certificate server, and by the identification information of authenticated user stored in verify data chained list.When user accesses outer network data, do not let pass if judge, then kernel Netfilter module judges the authentication state of this user again according to verify data chained list, can shorten the authenticated time of user further.
Certainly, in another example, kernel Netfilter module is when judging not comprise the identification information of described user (when not letting pass), request authentication server judges whether described user carries out certification, and when certification, the identification information of described user stored in verify data chained list, is then performed step S41 by kernel Netfilter module.That is, access outer network data user, and when judging not let pass, now just request authentication server judges the authentication state of this user.
Fig. 3 is the logic diagram of the kernel Netfilter module embodiments one of vehicle-mounted multimedia terminal of the present invention, and the kernel Netfilter module of this embodiment comprises: request receiving module 11, clearance judge module 12, clearance module 13 and blocking module 14.Wherein, request receiving module 11 accesses the request of outer network data for receiving user, and tackles described outer network data; The identification information outer network data of clearance judge module 12 for judging whether to comprise in clearance data link table described user, wherein, described clearance data link table is used for buffer memory and has let pass the identification information of user; Clearance module 13, for when judging to comprise the identification information of described user, to be let pass described outer network data to described user; Blocking module 14, for when judging to comprise the identification information of described user, intercept the URL of described outer network data, and 302 is redirected to local door.
Fig. 4 is the logic diagram of the kernel Netfilter module embodiments two of vehicle-mounted multimedia terminal of the present invention, the kernel Netfilter module of this embodiment compares the embodiment shown in Fig. 3, also comprise authentication determination module 15, first stored in module 16, authentication request module 17 and second stored in module 18, and blocking module 14 comprises the first interception unit 141 and the second interception unit 142.Wherein, according to verify data chained list, authentication determination module 15, for when judging not comprise the identification information of described user, judges whether described user carries out certification, and wherein, described verify data chained list is for the identification information of buffer memory authenticated user; First interception unit 141, for when judging to have carried out certification, intercept the URL of described outer network data, and 302 is redirected to the local door comprising the first control; Second interception unit 142, for when judging not carry out certification, intercept the URL of described outer network data, and 302 is redirected to the local door comprising the second control; First stored in module 16 for after triggering the first control as user, by the identification information of described user stored in clearance data link table; Authentication request module 17 is for triggering the second control as user, and after input authentication information, request authentication server judges that whether described authentication information is effective; Second stored in module 18 for when certificate server judges effective, by the identification information of described user stored in described verify data chained list.
Fig. 5 is the logic diagram of vehicle-mounted multimedia terminal embodiment one of the present invention, the vehicle-mounted multimedia terminal of this embodiment comprises authentication module 30 and the ARP detector 20 be connected with authentication module 30 respectively and kernel Netfilter module 10, in addition, certificate server 200 and authentication module 30 communicate to connect.Wherein, ARP detector 20 is for connecting the WIFI of vehicle-mounted multimedia terminal during user, the identification information of detecting user.Authentication module 30 is for according to described identification information, and request authentication server 200 judges whether described user carries out certification, and when certification, by described identification-information reporting to kernel Netfilter module 10.
And, in one example in which, authentication module 20 is when user connects WIFI, judge whether described user carries out certification with regard to request authentication server 200, and when certification, by described identification-information reporting to kernel Netfilter module 10, then, second in kernel Netfilter module 10 stored in module 18 also for by received described identification information stored in verify data chained list.In another example, when not letting pass, authentication module 20 just request authentication server 200 judges whether described user carries out certification, and when certification, by described identification-information reporting to kernel Netfilter module 10, then, second in kernel Netfilter module 10 stored in module 18 also for by received described identification information stored in verify data chained list.
About ARP detector 20, also it should be noted that, it is an ICP/IP protocol according to IP address acquisition MAC Address.Arp cache is a buffering area being used for storing IP address and MAC Address, and its essence is exactly an IP address--the correspondence table of >MAC address, in table, each entry have recorded the IP address of other main frames on network and corresponding MAC Address respectively.Arp cache can comprise dynamic and static state project.Dynamic item is passed in time and is automatically added and delete.The potential life cycle of each Dynamic ARP cache entry is 10 minutes.The project in buffer memory of being newly added to, with timestamp, does not re-use if certain project is added in latter 2 minutes, then this item expiration deleting from arp cache; If certain project in use, then receives again the life cycle of 2 minutes; If certain project in use, then can receive the life cycle of 2 minutes all the time in addition, until the longest life cycle of 10 minutes.Static state items retains in the buffer always, until restart computer.ARP detector can pass through reading/proc/net/arp data, obtains user and to reach the standard grade and roll off the production line message, and by user's going on line or off line message informing authentication module 30.
About authentication module 30, also it should be noted that, it is responsible for carrying out bridge communications, the functions such as main completing user certification, user's registration, user offline with modules.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within right of the present invention.
Claims (10)
1. access a method for outer network data, it is characterized in that, when user accesses outer network data by the WIFI of vehicle-mounted multimedia terminal, kernel Netfilter module carries out following steps:
Receive the request that user accesses outer network data, and tackle described outer network data;
Judge the identification information whether comprising described user in clearance data link table, wherein, described clearance data link table is used for buffer memory and has let pass the identification information of user;
When judging to comprise the identification information of described user, to let pass described outer network data to described user;
When judging not comprise the identification information of described user, intercept the URL of described outer network data, and 302 are redirected to local door.
2. the method for the outer network data of access according to claim 1, is characterized in that, when judging not comprise the identification information of described user, kernel Netfilter module also carries out following steps:
Judge whether described user carries out certification according to verify data chained list, and when judging certification, intercept the URL of described outer network data, and 302 are redirected to the local door comprising the first control; When judging unverified, intercept the URL of described outer network data, and 302 are redirected to the local door comprising the second control, wherein, described verify data chained list is for the identification information of buffer memory authenticated user;
After user triggers the first control, by the identification information of described user stored in described clearance data link table;
When user triggers the second control, and after input authentication information, request authentication server judges that described authentication information is whether effective, and when effective, by described in the identification information of described user stored in verify data chained list.
3. the method for the outer network data of access according to claim 2, is characterized in that,
When user connects the WIFI of vehicle-mounted multimedia terminal, according to the identification information of detected user, request authentication server judges whether described user carries out certification, and when certification, kernel Netfilter module by the described identification information of described user stored in verify data chained list.
4. the method for the outer network data of access according to claim 2, it is characterized in that, when judging not comprise the identification information of described user, kernel Netfilter module request certificate server judges whether described user carries out certification, and when certification, by the identification information of described user stored in verify data chained list.
5. the method for the outer network data of access according to claim 2, is characterized in that,
Described first control is the button clicking online for user;
Described second control comprises phone number input frame and identifying code input frame.
6. a kernel Netfilter module for vehicle-mounted multimedia terminal, is characterized in that, comprising:
Request receiving module, accesses the request of outer network data for receiving user, and tackles described outer network data;
Clearance judge module, the outer network data of the identification information for judging whether to comprise in clearance data link table described user, wherein, described clearance data link table is used for buffer memory and has let pass the identification information of user;
Clearance module, for when judging to comprise the identification information of described user, to let pass described outer network data to described user;
Blocking module, for when judging not comprise the identification information of described user, intercept the URL of described outer network data, and 302 is redirected to local door.
7. kernel Netfilter module according to claim 6, is characterized in that, also comprise authentication determination module, first stored in module, second stored in module and authentication request module, described blocking module comprises the first interception unit and the second interception unit, and,
According to verify data chained list, described authentication determination module, for when judging not comprise the identification information of described user, judges whether described user carries out certification, wherein, described verify data chained list is for the identification information of buffer memory authenticated user;
Described first interception unit, for when judging to have carried out certification, intercept the URL of described outer network data, and 302 is redirected to the local door comprising the first control;
Described second interception unit, for when judging not carry out certification, intercept the URL of described outer network data, and 302 is redirected to the local door comprising the second control;
Described first stored in module, after triggering the first control as user, by the identification information of described user stored in described clearance data link table;
Authentication request module, for triggering the second control as user, and after input authentication information, request authentication server judges that whether described authentication information is effective;
Described second stored in module, for when certificate server judges effective, by the identification information of described user stored in described verify data chained list.
8. a vehicle-mounted multimedia terminal, is characterized in that, comprises the kernel Netfilter module described in claim 6 or 7.
9. vehicle-mounted multimedia terminal according to claim 8, is characterized in that, also comprises ARP detector and authentication module, and,
Described ARP detector, during for connecting the WIFI of vehicle-mounted multimedia terminal user, the identification information of detecting user;
Described authentication module, for according to described identification information, request authentication server judges whether described user carries out certification, and when certification, by described identification-information reporting to kernel Netfilter module;
Described second stored in module, also for by received described identification information stored in verify data chained list.
10. vehicle-mounted multimedia terminal according to claim 8, is characterized in that,
Described first control is the button clicking online for user;
Described second control comprises phone number input frame and identifying code input frame.
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| CN106790262A (en) * | 2017-02-07 | 2017-05-31 | 腾讯科技（深圳）有限公司 | A kind of method for authenticating and device |
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Application publication date: 20160203 |