CN106776657B - Domain name retrieval method and device - Google Patents
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- CN106776657B CN106776657B CN201510830515.9A CN201510830515A CN106776657B CN 106776657 B CN106776657 B CN 106776657B CN 201510830515 A CN201510830515 A CN 201510830515A CN 106776657 B CN106776657 B CN 106776657B
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Abstract
The application discloses a domain name retrieval method. The domain name library is preset, after receiving a domain name retrieval request carrying a domain name to be retrieved, the domain name to be retrieved added with the specified prefix is converted into a reversed character string to be retrieved through character reversal processing, whether a corresponding relation matched with the reversed character string to be retrieved exists or not is inquired in the domain name library, and the domain name corresponding to the reversed character string to be retrieved is obtained according to the corresponding relation under the condition that the corresponding relation exists.
Description
Technical Field
The present application relates to the field of communications technologies, and in particular, to a domain name retrieval method. The application also relates to a domain name retrieval device.
Background
A Domain Name (Domain Name) is the Name of a computer or group of computers on the Internet that is composed of a string of names separated by dots, and is used to identify the electronic location of the computer (sometimes also referred to as geographical location, geographical Domain Name, referring to a local area with administrative autonomy) during data transmission. The purpose of a domain name is to facilitate the address of a set of servers (web site, email, FTP, etc.) that are remembered and communicated. When the IP address changes, the domain name can still be kept unchanged by changing the resolution correspondence. Therefore, the name registered by the enterprise, government, non-government organization or other organizations or individuals on the domain name registration inquirer is the network address of the interconnection between the enterprises or organizations on the internet.
The Domain Name System (DNS) is a core service of the internet, and it is a distributed database that maps Domain names and IP addresses to each other, enabling people to access the internet more conveniently without remembering IP strings that can be read directly by machines. The labels in the domain names are composed of English letters and numbers, each label does not exceed 63 characters, and capital letters and lowercase letters are not distinguished. The punctuation marks other than the hyphen (-) cannot be used in the labels. The domain name with the lowest rank is written to the far left, and the domain name with the highest rank is written to the far right. A Sub-domain name (Sub-domain) is the next level of a top level domain name (first level domain name), and the domain name as a whole includes two.
Take a common sub-domain name "img.cms.topdomaincast.com" as an example, the website is composed of two parts, the label "img.cms.topdomaincast" is the subject of the domain name, and the last label "com" is the suffix of the domain name, which represents a com international domain name and is the top-level domain name.
The inventor finds in the process of implementing the present application that the retrieval of domain names becomes very slow and inefficient after a large number of domain names actually used by users are stored in the existing network device. This is because, in the prior art, when retrieving a domain name, it is necessary to add ". to" at the beginning of the domain name currently available for retrieval as a prefix, and then retrieve the domain name ending with the domain name to be retrieved from all the domain names to which ". has been added, because only such retrieval can ensure the accuracy and precision of the retrieval result.
Taking the above-mentioned "img.cms.topdomaincast.com" domain name as an example, when a technician needs to search the "topdomaincast.com" domain name or a sub-domain name related to the domain name in a network device, it is necessary to add a ". multidot." before all the domain names currently available for searching as a prefix, and then query and search for the domain name ending with ". topdomaincast.com", which results in that each domain name query needs to involve processing all the domain names, and a large amount of processing and computing resources are consumed.
Therefore, how to quickly search for a specific domain name in a large number of domain names becomes a technical problem to be solved urgently by technical personnel in the field.
Disclosure of Invention
The application provides a domain name retrieval method which is used for rapidly retrieving matched domain names or sub-domain names from massive domain names and improving retrieval efficiency on the basis of saving resource consumption. The method presets a domain name library, wherein the domain name library comprises a currently existing domain name, a reverse character string generated by the domain name after adding an appointed prefix and through character reverse processing, and a corresponding relation between the domain name and the reverse character string, and the method further comprises the following steps:
receiving a domain name retrieval request carrying a domain name to be retrieved;
the domain name to be retrieved added with the specified prefix is processed into a reversed character string to be retrieved through character reversal;
inquiring whether a corresponding relation matched with the reverse character string to be retrieved exists in the domain name library;
and if so, acquiring the domain name corresponding to the reverse character string to be retrieved according to the corresponding relation.
Preferably, the domain name to be retrieved to which the specified prefix is added is processed into an inverted character string to be retrieved through character inversion, specifically:
adding the specified prefix at the head of the domain name to be retrieved, and taking the domain name to be retrieved added with the specified prefix as a character string to be reversed;
and generating the reverse character string to be retrieved through reverse arrangement according to each character in the character string to be reversed.
Preferably, the method further comprises the following steps:
and if the domain name library does not have the corresponding relation matched with the reverse character string to be retrieved, returning a retrieval failure response to a sender of the domain name retrieval request.
Preferably, before receiving the domain name retrieval request carrying the domain name to be retrieved, the method further includes:
receiving a domain name adding request carrying the domain name;
adding the specified prefix at the head of the domain name, and carrying out character reversal processing on the domain name added with the specified prefix to obtain a reversed character string;
generating a corresponding relation between the domain name and the reverse character string;
and adding the domain name, the reverse character string and the corresponding relation to the domain name library.
Preferably, the specified prefix is a connector between characters in the domain name.
Correspondingly, the present application further provides a domain name retrieval device, which presets a domain name library, where the domain name library includes a currently existing domain name, a reverse character string generated by the domain name after adding a specified prefix and performing character reverse processing, and a corresponding relationship between the domain name and the reverse character string, and further includes:
the receiving module is used for receiving a domain name retrieval request carrying a domain name to be retrieved;
the reverse module is used for converting the domain name to be retrieved added with the specified prefix into a reverse character string to be retrieved through character reverse processing;
the query module is used for querying whether a corresponding relation matched with the reverse character string to be retrieved exists in the domain name library;
and the acquisition module acquires the domain name corresponding to the reverse character string to be retrieved according to the corresponding relation when the corresponding relation matched with the reverse character string to be retrieved exists in the domain name library.
Preferably, the inversion module is specifically configured to:
adding the specified prefix at the head of the domain name to be retrieved, and taking the domain name to be retrieved added with the specified prefix as a character string to be reversed;
and generating the reverse character string to be retrieved through reverse arrangement according to each character in the character string to be reversed.
Preferably, the method further comprises the following steps:
and the return module is used for returning a retrieval failure response to a sender of the domain name retrieval request when the domain name library does not have a corresponding relation matched with the reverse character string to be retrieved.
Preferably, the method further comprises the following steps:
the adding module is used for receiving a domain name adding request carrying the domain name, adding the specified prefix at the head of the domain name, carrying out character reversal processing on the domain name added with the specified prefix to obtain a reversal character string, generating a corresponding relation between the domain name and the reversal character string, and adding the domain name, the reversal character string and the corresponding relation to the domain name library.
Preferably, the specified prefix is a connector between characters in the domain name.
By applying the technical scheme of the invention, a domain name library is preset, after a domain name retrieval request carrying a domain name to be retrieved is received, the domain name to be retrieved added with the specified prefix is converted into a reversed character string to be retrieved through character reversing, whether a corresponding relation matched with the reversed character string to be retrieved exists or not is inquired in the domain name library, and the domain name corresponding to the reversed character string to be retrieved is obtained according to the corresponding relation under the condition that the corresponding relation exists.
Drawings
Fig. 1 is a schematic flow chart of a domain name retrieval method proposed in the present application;
FIG. 2 is a schematic diagram of a data preprocessing flow according to an embodiment of the present application;
FIG. 3 is a diagram illustrating a data retrieval process according to an embodiment of the present application;
fig. 4 is a schematic structural diagram of a domain name retrieval device according to the present application.
Detailed Description
In order to solve the problems involved in the background art, the present application provides a domain name retrieval method, which adds a specified prefix (e.g., ") to a domain name, and then performs character reversal processing on a character string of the domain name to which the specified prefix is added, so as to perform retrieval in a preset domain name library as an index for retrieval. The domain name library not only contains the currently existing domain name, but also contains a reverse character string generated by character reverse processing after the specified prefix is added to the domain name and the corresponding relation between the domain name and the reverse character string, so that the corresponding domain name can be quickly inquired through the corresponding relation. Therefore, the domain name is quickly retrieved, and the domain name query efficiency can be obviously improved when a large number of domain names are faced.
In order to realize the fast retrieval of the domain name, the domain name to be retrieved is combined with the specified prefix to be processed on one hand, and the domain name to be retrieved is combined with the specified prefix to be specially reversed and then stored on the other hand. Therefore, before each step of the technical scheme of the application is implemented, a domain name library is preset, and the domain name library includes not only the currently existing domain names, but also the reverse character strings generated by the domain names after the specified prefixes are added and through character reverse processing, and the corresponding relations between the domain names and the reverse character strings.
As shown in fig. 1, a schematic flow chart of a domain name retrieval method proposed by the present application includes the following steps:
s101, receiving a domain name retrieval request carrying a domain name to be retrieved.
And S102, the domain name to be retrieved added with the specified prefix is converted into a reversed character string to be retrieved through character reversal processing.
As described above, the present application provides a special domain name library for facilitating domain name retrieval, which includes domain names, reverse character strings, and the correspondence relationship between the domain names and the reverse character strings. When facing a newly added domain name, the preferred embodiment of the present application also provides a corresponding processing flow to ensure that the domain name library can cover all current domain names. The method comprises the following specific steps:
step a) receiving a domain name adding request carrying the domain name;
step b) adding the specified prefix at the head of the domain name, and carrying out character reversal processing on the domain name added with the specified prefix to obtain a reversed character string;
step c) generating a corresponding relation between the domain name and the reverse character string;
step d) adding the domain name, the reverse character string and the corresponding relation to the domain name library.
In both the above-described process and S102, the generation process of the reverse character string is involved, and since the domain name is composed of each character, the reverse character string is generated by arranging each character of the domain name after adding the specified prefix in the reverse order. In the preferred embodiment of the present application, a corresponding scheme is proposed for the generation of the reverse character string to be retrieved:
step a) adding the specified prefix at the head of the domain name to be retrieved, and taking the domain name to be retrieved added with the specified prefix as a character string to be reversed;
and b) generating the reverse character string to be retrieved through reverse arrangement according to each character in the character string to be reversed.
It should be noted that the above-mentioned solution is only a preferred embodiment proposed by the present application for generating the reversed character string, and on this basis, the skilled person can make improvements or optimizations, and apply the same to the process of "processing the domain name with the specified prefix added into the reversed character string through character reversal", which all belong to the protection scope of the present application.
In the data preprocessing flow diagram in the embodiment of the present application shown in fig. 2, based on the preset domain name library, when a new domain name needs to be added, first add a "-" to all domain names that need to be added as prefixes, for example, when two new domain names of "img.cms.topdomainside.com" and "img.cms.2topdomainside.com" need to be added, the embodiment adds specified prefixes "to the new domain names, respectively, then performs character reversal processing on the img.cms.topdomainside.com" and the ". img.2topdomainside.com", and finally obtains results of "moc.elpsm.gmi.cmmi", "moc.elpsm.2. pdominiumsample.cmmi", and "moc.elpmassiumspd.pdommi".
It should be noted that the final purpose of the inversion processing in the present application is to obtain a field in which each character is opposite to the original input content, and therefore, the above processing method is only a preferred processing method, and on the basis of this, those skilled in the art can propose other processing methods, which all belong to the protection scope of the present invention.
S103, inquiring whether a corresponding relation matched with the reverse character string to be retrieved exists in the domain name library.
The domain name library comprises all current domain names, reverse character strings obtained after the current domain names are subjected to character reverse processing in combination with the specified prefixes, and also stores the corresponding relation between the original domain names and the reverse character strings corresponding to the original domain names, so that the method and the device can search based on the character strings which are added with the prefixes and subjected to character reverse, and further obtain the normal and correct domain names.
And S104, if the domain name exists, acquiring the domain name corresponding to the reverse character string to be retrieved according to the corresponding relation.
After the domain name corresponding to the reverse character string is inquired, the corresponding domain name can be obtained according to the inquired corresponding relation, and the domain name is provided for a sender of the domain name retrieval request. Correspondingly, if the corresponding relation matched with the reverse character string to be retrieved does not exist, a retrieval failure response is returned to the sender of the domain name retrieval request.
Taking the domain name appearing in the above specific embodiment as an example, in the data retrieval flow diagram shown in fig. 3, when a sub domain name of the domain name "topographiessample.com" needs to be queried (query expression domain ═ topographiessample.com "), the domain name retrieval is completed through the following flow:
step a) adding a prefix before the domain name to obtain a new domainTmp, namely, (' topdomainample. ' com ';
step b) performing character reversal processing on the ' top plan example.com ' in the previous step to obtain query domain name prefix (domain PreQuery) ' moc.
Step c) inquiring a corresponding relation containing 'moc.elpmasonimodpost.' in a domain name library, and obtaining a domain name to be retrieved based on the domain name corresponding to the corresponding relation.
In order to achieve the above object, the present application further provides a domain name retrieval device, where the domain name retrieval device presets a domain name library, where the domain name library includes a currently existing domain name, a reverse character string generated by adding a specified prefix to the domain name and performing character reverse processing, and a corresponding relationship between the domain name and the reverse character string, as shown in fig. 4, the device further includes:
the receiving module 410 receives a domain name retrieval request carrying a domain name to be retrieved;
the reverse module 420 is used for reversing the domain name to be retrieved, to which the specified prefix is added, into a reverse character string to be retrieved through character reversing processing;
the query module 430 is configured to query whether a corresponding relationship matching the reverse character string to be retrieved exists in the domain name library;
the obtaining module 440 obtains the domain name corresponding to the reverse character string to be retrieved according to the corresponding relationship when the corresponding relationship matching the reverse character string to be retrieved exists in the domain name library.
In a specific application scenario, the inversion module is specifically configured to:
adding the specified prefix at the head of the domain name to be retrieved, and taking the domain name to be retrieved added with the specified prefix as a character string to be reversed;
and generating the reverse character string to be retrieved through reverse arrangement according to each character in the character string to be reversed.
In a specific application scenario, the method further includes:
and the return module is used for returning a retrieval failure response to a sender of the domain name retrieval request when the domain name library does not have a corresponding relation matched with the reverse character string to be retrieved.
In a specific application scenario, the method further includes:
the adding module is used for receiving a domain name adding request carrying the domain name, adding the specified prefix at the head of the domain name, carrying out character reversal processing on the domain name added with the specified prefix to obtain a reversal character string, generating a corresponding relation between the domain name and the reversal character string, and adding the domain name, the reversal character string and the corresponding relation to the domain name library.
In a specific application scenario, the specified prefix is a connector between characters in the domain name.
Therefore, by applying the technical scheme of the application, the domain name library is preset, after a domain name retrieval request carrying a domain name to be retrieved is received, the domain name to be retrieved with the specified prefix is converted into a reversed character string to be retrieved through character reversing, whether a corresponding relation matched with the reversed character string to be retrieved exists or not is inquired in the domain name library, and the domain name corresponding to the reversed character string to be retrieved is obtained according to the corresponding relation under the condition that the corresponding relation exists.
Through the above description of the embodiments, those skilled in the art will clearly understand that the present application can be implemented by hardware, and also by software plus a necessary general hardware platform. Based on such understanding, the technical solution of the present application may be embodied in the form of a software product, which may be stored in a non-volatile storage medium (which may be a CD-ROM, a usb disk, a removable hard disk, etc.), and includes several instructions for enabling a computer device (which may be a personal computer, a server, or a network device, etc.) to execute the method according to the implementation scenarios of the present application.
Those skilled in the art will appreciate that the figures are merely schematic representations of one preferred implementation scenario and that the blocks or flow diagrams in the figures are not necessarily required to practice the present application.
Those skilled in the art will appreciate that the modules in the devices in the implementation scenario may be distributed in the devices in the implementation scenario according to the description of the implementation scenario, or may be located in one or more devices different from the present implementation scenario with corresponding changes. The modules of the implementation scenario may be combined into one module, or may be further split into a plurality of sub-modules.
The above application serial numbers are for description purposes only and do not represent the superiority or inferiority of the implementation scenarios.
The above disclosure is only a few specific implementation scenarios of the present application, but the present application is not limited thereto, and any variations that can be made by those skilled in the art are intended to fall within the scope of the present application.
Claims (6)
1. A domain name retrieval method is characterized in that a domain name library is preset, and the domain name library comprises a domain name which exists at present, a reverse character string which is generated by adding a specified prefix to the domain name and then performing character reverse processing, and a corresponding relation between the domain name and the reverse character string, and the method comprises the following steps:
receiving a domain name retrieval request carrying a domain name to be retrieved;
the domain name to be retrieved added with the specified prefix is processed into a reversed character string to be retrieved through character reversal;
inquiring whether a corresponding relation matched with the reverse character string to be retrieved exists in the domain name library;
if yes, acquiring a domain name corresponding to the reverse character string to be retrieved according to the corresponding relation;
the preset domain name library specifically comprises the following steps: after receiving a domain name adding request carrying the domain name, adding the specified prefix at the head of the domain name, performing character inversion processing on the domain name added with the specified prefix to obtain an inverted character string, generating a corresponding relation between the domain name and the inverted character string, and adding the domain name, the inverted character string and the corresponding relation to the domain name library;
the specified prefix is a connector between characters in the domain name.
2. The method according to claim 1, wherein the domain name to be retrieved to which the specified prefix is added is processed into an inverted character string to be retrieved by character inversion, specifically:
adding the specified prefix at the head of the domain name to be retrieved, and taking the domain name to be retrieved added with the specified prefix as a character string to be reversed;
and generating the reverse character string to be retrieved through reverse arrangement according to each character in the character string to be reversed.
3. The method of claim 1, further comprising:
and if the domain name library does not have the corresponding relation matched with the reverse character string to be retrieved, returning a retrieval failure response to a sender of the domain name retrieval request.
4. A domain name retrieval device, characterized in that the device presets a domain name library, which includes a domain name currently existing, a reverse character string generated by the domain name after adding a specified prefix and performing character reverse processing, and a correspondence between the domain name and the reverse character string, the device further comprising:
the receiving module is used for receiving a domain name retrieval request carrying a domain name to be retrieved;
the reverse module is used for converting the domain name to be retrieved added with the specified prefix into a reverse character string to be retrieved through character reverse processing;
the query module is used for querying whether a corresponding relation matched with the reverse character string to be retrieved exists in the domain name library;
the acquisition module is used for acquiring a domain name corresponding to the reverse character string to be retrieved according to a corresponding relation when the corresponding relation matched with the reverse character string to be retrieved exists in the domain name library;
the preset domain name library specifically comprises the following steps: after receiving a domain name adding request carrying the domain name, adding the specified prefix at the head of the domain name, performing character inversion processing on the domain name added with the specified prefix to obtain an inverted character string, generating a corresponding relation between the domain name and the inverted character string, and adding the domain name, the inverted character string and the corresponding relation to the domain name library;
the specified prefix is a connector between characters in the domain name.
5. The device of claim 4, wherein the inversion module is specifically configured to:
adding the specified prefix at the head of the domain name to be retrieved, and taking the domain name to be retrieved added with the specified prefix as a character string to be reversed;
and generating the reverse character string to be retrieved through reverse arrangement according to each character in the character string to be reversed.
6. The apparatus of claim 4, further comprising:
and the return module is used for returning a retrieval failure response to a sender of the domain name retrieval request when the domain name library does not have a corresponding relation matched with the reverse character string to be retrieved.
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| CN201510830515.9A CN106776657B (en) | 2015-11-25 | 2015-11-25 | Domain name retrieval method and device |
| PCT/CN2016/106018 WO2017088690A1 (en) | 2015-11-25 | 2016-11-16 | Method and device for retrieving domain name |
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| CN201510830515.9A CN106776657B (en) | 2015-11-25 | 2015-11-25 | Domain name retrieval method and device |
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| CN105426759A (en) * | 2015-10-30 | 2016-03-23 | 百度在线网络技术（北京）有限公司 | URL legality determining method and apparatus |
| CN113312549B (en) * | 2021-05-25 | 2024-01-26 | 北京天空卫士网络安全技术有限公司 | Domain name processing method and device |
| CN116980234B (en) * | 2023-09-25 | 2024-01-05 | 北京源堡科技有限公司 | Domain name imitation detection method and system |
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| CN101055574A (en) * | 2006-04-13 | 2007-10-17 | 华为技术有限公司 | Domain name information storage and inquiring method and system |
| CN101110871A (en) * | 2007-08-20 | 2008-01-23 | 中兴通讯股份有限公司 | E.164 domain name analyzing method and DNS server |
| CN102882987A (en) * | 2011-07-12 | 2013-01-16 | 阿里巴巴集团控股有限公司 | Domain filter list storing and matching method and device |
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| US7114177B2 (en) * | 2001-03-28 | 2006-09-26 | Geotrust, Inc. | Web site identity assurance |
| US8411670B2 (en) * | 2007-07-03 | 2013-04-02 | Motorola Mobility Llc | Reverse ENUM based routing for communication networks |
| CN102129437A (en) * | 2010-01-12 | 2011-07-20 | 腾讯科技（北京）有限公司 | Domain name matching method and browser |
| KR102017526B1 (en) * | 2012-09-25 | 2019-09-03 | 삼성전자주식회사 | Method and apparatus for searching url address in url list in a communication system |
| CN103605704B (en) * | 2013-11-08 | 2017-02-01 | 深圳大学 | Mass url (uniform resource locator) data any field indexing and retrieving method |
| CN104537107A (en) * | 2015-01-15 | 2015-04-22 | 中国联合网络通信集团有限公司 | URL storage matching method and device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101055574A (en) * | 2006-04-13 | 2007-10-17 | 华为技术有限公司 | Domain name information storage and inquiring method and system |
| CN101110871A (en) * | 2007-08-20 | 2008-01-23 | 中兴通讯股份有限公司 | E.164 domain name analyzing method and DNS server |
| CN102882987A (en) * | 2011-07-12 | 2013-01-16 | 阿里巴巴集团控股有限公司 | Domain filter list storing and matching method and device |
| CN103002061A (en) * | 2011-09-16 | 2013-03-27 | 阿里巴巴集团控股有限公司 | Method and device for mutual conversion of long domain names and short domain names |
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