CN108108260B - Resource file verification method and device - Google Patents
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- G06F11/07—Responding to the occurrence of a fault, e.g. fault tolerance
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Abstract
The invention discloses a method and a device for checking resource files, wherein a total resource file is generated by extracting information data of each resource file; calculating according to the total resource file to obtain an original check code, and writing the original check code into the total resource file to generate a check file; when each resource file is verified, reading the corresponding verification file, calculating to obtain a confirmation verification code according to the total resource files in the verification file, and judging whether the confirmation verification code is consistent with the original verification code. According to the invention, the data structure of different types of resource files is adjusted to generate an integral verification file, so that the procedures of reading, analyzing and calculating each resource file in the verification process are reduced, the time consumed by verifying the resource files is reduced, and the verification efficiency is improved.
Description
Technical Field
The invention relates to a method and a device for verifying a resource file.
Background
Since resource data or files are easy to lose and damage in the processes of analysis, movement, uploading and the like, in order to ensure the reliability of the resource data or files, the resource data or files are generally checked, the checking method in the prior art checks a single file or data and does not support batch checking, but in practical application, the resource data or files often comprise a plurality of different data types and have a large data amount, when the resource data or files are checked, steps of analysis, calculation, checking and the like need to be respectively carried out on each resource data or file, the resource data or files are repeatedly analyzed, the complexity of the checking process is increased, and the time consumption is long, so that it is necessary to develop an efficient method and a device capable of carrying out batch checking.
Disclosure of Invention
In view of the technical defects and technical drawbacks in the prior art, embodiments of the present invention provide a method and an apparatus for checking a resource file, which overcome the above problems or at least partially solve the above problems.
As an aspect of the embodiments of the present invention, the present invention provides a method for verifying a resource file, where the method includes:
determining information data of at least one resource file, and synthesizing a total resource file comprising index data blocks;
calculating and storing an original check code of the total resource file;
receiving a checking instruction, and calculating a confirmation checking code of the total resource file;
and judging whether the confirmation check code is consistent with the original check code or not.
In one embodiment, calculating and storing the raw check code of the total resource file comprises:
setting a configuration file comprising the corresponding relation between the original check code and the check data block;
calculating an original check code corresponding to at least one check data block;
and storing the original check code in a fixed position of the total resource file.
In one embodiment, calculating an original check code corresponding to at least one check data block includes:
calculating a first original check code through an index data block in the total resource file; and/or
Calculating a second original check code through an information data block in the total resource file; and/or
And calculating a third original check code through the index data block and the information data block in the total resource file.
In one embodiment, determining information data of at least one resource file, synthesizing a total resource file including index data blocks, comprises:
extracting common information of at least two resource files to generate an index data block;
respectively acquiring key data of the at least two resource files to generate corresponding information data blocks;
and storing the corresponding index value and offset of the corresponding information data block into an index data block.
In one embodiment, the information data blocks include non-picture data blocks and picture data blocks, the picture data blocks being stored at the end of the aggregate resource file.
As another aspect of the embodiments of the present invention, there is provided an apparatus for verifying a resource file, where the apparatus includes:
a synthesis module: information data for determining at least one resource file, synthesizing a total resource file including the index data block;
a calculation module: the original check code is used for calculating the total resource file;
a storage module: the system comprises a data storage module, a verification code generation module and a verification code generation module, wherein the data storage module is used for storing a total resource file comprising an original verification code;
a checking module: the system comprises a verification instruction receiving module, a verification code determining module and a verification code determining module, wherein the verification instruction is used for receiving a verification instruction and calculating a verification code of the total resource file;
a judging module: and the check code is used for judging whether the check code is consistent with the original check code or not.
In one embodiment, the calculation module further comprises:
a configuration module: the configuration file is used for setting the corresponding relation between the original check code and the check data block;
a calculation submodule: the method comprises the steps of calculating an original check code corresponding to at least one check data block;
a storage submodule: and the system is used for storing the original check code in a fixed position of the total resource file.
In one embodiment, the computation submodule includes:
the first calculation unit: the first original check code corresponding to the index data block in the total resource file is calculated;
a second calculation unit: the second original check code corresponding to the information data block in the total resource file is calculated;
a third calculation unit: and the third original check code is used for calculating the index data block and the third original check code corresponding to the information data block in the total resource file.
In one embodiment, the synthesis module comprises:
a first extraction unit: the index data block is used for extracting common information of at least two resource files to generate an index data block;
a second extraction unit: the system comprises a data acquisition module, a data storage module, a data transmission module and a data transmission module, wherein the data acquisition module is used for acquiring key data of at least two resource files respectively to generate corresponding information data blocks;
a positioning module: for determining the position of the information data block.
As a further aspect of the embodiments of the present invention, there is provided a navigation device, which is characterized in that the navigation device includes a verification device for a resource file as described in any of the above embodiments.
The embodiment of the invention at least realizes the following technical effects:
by compiling each independent resource file to generate a total resource file comprising the index data block and the information data block, the original check mode that a plurality of resource files must be traversed and analyzed is converted into a mode that only one resource file needs to be analyzed and calculated, the times of analysis and calculation are reduced, the check steps are simplified, and the check time is saved.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
The technical solution of the present invention is further described in detail by the accompanying drawings and embodiments.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:
FIG. 1 is a flow chart of a verification method of the present invention;
FIG. 2 is a block diagram of a total resource file of the present invention;
FIG. 3 is a schematic diagram of the structure of the apparatus of the present invention;
FIG. 4 is a flowchart illustrating verification of the navigation device according to the present invention.
Detailed Description
Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.
The resource files described in the present invention include many kinds, for example: pictures, character strings, fonts, layout files and the like, wherein each file is stored independently and has own identification and storage rule, according to the existing verification mode, if the resource files need to be verified, each type of resource files need to be read and analyzed respectively, and the verification code is calculated according to the content in each resource file respectively, the process is complex and the time is long, the invention recompiles each resource file, introduces the concepts of an index data block and an information data block, so that each type of resource file corresponds to an information data block structure, different types of resource files correspond to different types of information data blocks, the stored information and the rules are different, common information common to all the information data blocks is extracted, and the common information comprises a resource type field, a data type field, an information data size field and the like, so as to generate the index data block, when the total resource file is created, all the common information is written into the index data block, the key data of the corresponding resource file is written into the corresponding information data block, and when the total resource file data is read, the information of the index value and the deviation amount generated by the index data block is positioned to each information data block.
As an aspect of the embodiments of the present invention, the present invention provides a method for checking resource files, including determining information data of at least one resource file, and synthesizing a total resource file including index data blocks; calculating and storing an original check code of the total resource file; receiving a checking instruction, and calculating a confirmation checking code of the total resource file; and judging whether the confirmation check code is consistent with the original check code or not.
Specifically, as shown in fig. 1, the method comprises the following steps:
s101: extracting information data of each resource file, and generating a total resource file comprising index data blocks and information data blocks;
s102: calculating according to the total resource file to obtain an original check code, and writing the original check code into the total resource file to generate a check file;
s103: when each resource file is verified, reading the corresponding verification file, and calculating to obtain a confirmation verification code according to the total resource files in the verification files;
s104: judging whether the verification code is consistent with the original verification code or not, if so, turning to S105; if not, go to S106;
s105: the application is started after the verification is passed;
s106: and prompting that the verification fails.
Through the steps, the resource files are integrated into the total resource file with a certain rule, then the total resource file is subjected to verification calculation, the calculated verification value is written into the set position of the total resource file to generate the verification file, when the resource file needs to be verified, the verification file is only subjected to reading and analysis calculation once to obtain a confirmed verification value, the obtained confirmed verification value is compared with the generated original verification value, and verification is completed.
In one embodiment, the method of the present invention is preferably that common information of at least two resource files is extracted to generate an index data block; respectively acquiring key data of the at least two resource files to generate corresponding information data blocks; and storing the corresponding index value and the offset of the corresponding information data block into an index data block. Or all resource files are integrated into one total resource file, but the integration is not limited to only one total resource file, and sub-files of the total resource file can be set according to the verification requirements of users, so that the sub-files are verified one by one.
Further, in step S101, first, all available resource files are obtained, where the resource files mainly include two types, one type is a non-picture related file, and the other type is a picture file; the non-picture related files further include files such as character strings, fonts and colors, a total resource file is generated for all the files, a specific format is shown in fig. 2, existing common information 201 is firstly extracted and written into index data 200, index information 202 corresponding to various information blocks is written into index data blocks and comprises index values and offset values, resource file information is respectively written into data information blocks 300 according to the sequence defined in the index data blocks, and therefore each data information block can be positioned according to the index data blocks, wherein the common information of each resource file comprises a resource type field, a data information block size field and the like, each information data block can have different data structures, and the common information can be stored according to different storage rules according to different types of stored resource files
In one embodiment, preferably, when all resource files are combined into one total resource file, all non-picture resource files 301 are stored in information data blocks in different types in the form of binary data, and an index value and an offset value of a corresponding resource file are generated in a corresponding index data block; for the picture resource file 302, since each picture file format includes a file header, and the file header contains basic information of the picture, such as the size, the number of bits, and the like of the picture, in addition to the magic number indicating the format of the picture, the basic information of the picture file is extracted, stored in the index data block, and a corresponding index value and an offset value are generated, and then the corresponding other data portions are stored in the information data block, and through the above manner, a total resource file with a certain rule is generated.
In one embodiment, each block may be divided into several small blocks or composed of several fields. The information data block comprises a non-picture data block and a picture data block, and in order to reduce the times of analyzing the total resource file as much as possible, the writing position of the stored information is also required.
In one embodiment, the Check of the present invention is a CRC Check, i.e., a Cyclic Redundancy Check (Cyclic Redundancy Check), which is generally summarized as a hash function for generating a short fixed bit Check code according to data such as network data packets or computer files, and is mainly used to detect or Check errors that may occur after data transmission or storage.
And obtaining a four-byte hash value through CRC (cyclic redundancy check) calculation, taking the hash value as a check code of the total resource file and writing the check code into the check file, when the file needs to be checked, only performing CRC calculation on the total resource file again, and comparing whether the obtained hash value is consistent with the last four bits of the originally stored hash value, namely judging whether the skin file is damaged or not and falsified.
In one embodiment, preferably, in step S102,
and performing original check code generation operation on the whole total resource file, calculating a hash value of binary data in the total resource file through a CRC polynomial, and judging whether the check resource file is damaged or not according to the hash value obtained through calculation.
Further, setting a configuration file comprising the corresponding relation between the original check code and the check data block; calculating an original check code corresponding to at least one check data block; and storing the original check code in a fixed position of the total resource file. The method and the device for verifying the resource file are used for configuring the verification mode of the resource file. Different original check code types are generated through different data blocks in the total resource file, and check mode configuration is carried out according to the different original check code types.
The capacity of the total resource file is generally larger, if the full file is verified each time, the problem that the starting of the application program is slow can be caused, and verification options in different modes are added in the method. The data to be verified can be extracted according to the configuration of the user application, verification is carried out, and the verification mode and the included files can be set according to the convention of the client.
Further, calculating an original check code corresponding to at least one check data block, including:
calculating a first original check code through an index data block in the total resource file; and/or
Calculating a second original check code through an information data block in the total resource file; and/or
And calculating a third original check code through the index data block and the information data block in the total resource file.
And positioning the information data block through the index information in the index data block.
That is to say, the invention can carry out CRC check technology according to the index data block, the information data block and the sum of the index data block and the information data block of the total resource file respectively, and a hash value is generated by the binary value in the index data block, thereby not only ensuring the correctness of the data, but also improving the check speed; in addition, various types of verification modes can better meet the requirements of users, and the user experience is improved.
Based on the same inventive concept, embodiments of the present invention further provide a device for checking a resource file, and because the principle of the problem solved by the device is similar to the method for checking a resource file in the foregoing embodiments, the implementation of the device may refer to the implementation of the method in the foregoing embodiments, and repeated details are omitted.
This embodiment provides a verification apparatus for a resource file, as shown in fig. 3, the apparatus includes:
a synthesis module 401: information data for determining at least one resource file, synthesizing a total resource file including the index data block;
the calculation module 402: the original check code is used for calculating the total resource file;
the storage module 403: the system comprises a data storage module, a verification code generation module and a verification code generation module, wherein the data storage module is used for storing a total resource file comprising an original verification code;
the verification module 404: the system comprises a verification instruction receiving module, a verification code determining module and a verification code determining module, wherein the verification instruction is used for receiving a verification instruction and calculating a verification code of the total resource file;
the judging module 405: and the check code is used for judging whether the check code is consistent with the original check code or not.
The device can be divided into two parts, one part is a verification file generation part and comprises a synthesis module 401, a calculation module 402 and a storage module 403, the other part is a verification file verification part, and when the verification file needs to be verified, a verification module 404 and a judgment module 405 are started.
In one embodiment, the calculation module 402 further comprises:
a configuration module: the configuration file is used for setting the corresponding relation between the original check code and the check data block;
a calculation submodule: the method comprises the steps of calculating an original check code corresponding to at least one check data block;
a storage submodule: and the system is used for storing the original check code in a fixed position of the total resource file.
In one embodiment, the computation submodule includes:
the first calculation unit: the first original check code corresponding to the index data block in the total resource file is calculated;
a second calculation unit: the second original check code corresponding to the information data block in the total resource file is calculated;
a third calculation unit: and the third original check code is used for calculating the third original check code corresponding to the index data block and the information data block in the total resource file.
In one embodiment, the synthesis module 401 comprises:
a first extraction unit: the index data block is used for extracting common information of at least two resource files to generate an index data block;
a second extraction unit: the system comprises a data acquisition module, a data storage module, a data transmission module and a data transmission module, wherein the data acquisition module is used for acquiring key data of at least two resource files respectively to generate corresponding information data blocks;
a positioning module: for determining the position of the information data block.
Based on the same inventive concept, the embodiment of the present invention further provides a navigation device, and as the principle of the problem solved by the navigation device is similar to the method for checking the resource file in the foregoing embodiment, the implementation of the navigation device may refer to the implementation of the method in the foregoing embodiment, and repeated details are omitted.
A navigation device comprising verification means of a resource file as described above.
The resource file in the navigation device mainly refers to a skin resource file for generating a graphical user interface, and after the graphical user is developed, all resource files are integrated into a total skin resource file according to the above manner, and the verification process of this embodiment refers to fig. 4, and specifically includes:
s501, starting navigation;
s502, reading the configuration file of the total skin resource file, and acquiring a verification mode and a corresponding original verification value;
s503, acquiring check data according to a check mode, and performing CRC check calculation to obtain a determined check value;
s504 judges whether the check values are consistent, if yes, the step goes to S505, and if not, the step goes to S506;
s505, a navigation program is started normally;
s506 performs a check failure process.
When the navigation is started and the resource file needs to be verified, only the total skin resource file needs to be read and analyzed, the verification mode can be seen according to the read configuration file, if the configuration file is provided with the index data block verification performed when the navigation is started, the verification value is determined by reading the index data block, the determined verification value is compared with the original verification value corresponding to the index data block stored in the total skin file, if the verification codes are the same, the skin is proved not to be damaged, the verification is successful, and the navigation can be started normally. And if the check codes are different, the check fails, and the skin file is processed after being damaged.
Generally, the skin resources used for navigation are large, if the full file is checked each time, the problem that the navigation program is started slowly can be caused, and only the index data block or the file header of the total skin resources can be checked in the invention. In other words, in the present invention, an original hash value can be generated according to the binary value of the index data block or the file header in the skin resource file and stored in the verification file, and the verification is completed by calculating the confirmation hash value of the index data block or the file header and comparing the two hash values in the verification process.
In the practical application of the navigation software after the verification process is added, the navigation software can judge whether the navigation skin file is damaged so as to perform failure processing operation, and can also be used for encryption and cracking prevention of resource files. For example, after the navigation resource file is maliciously replaced by other people, the navigation can know that the resource file is damaged through verification, and the navigation cannot be started normally.
As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, optical storage, and the like) having computer-usable program code embodied therein.
The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (6)
1. A method for checking a resource file, the method comprising:
extracting common information of at least two resource files to generate an index data block, wherein the common information comprises a resource type field, a data type field and an information data size field;
respectively writing the key data of the at least two resource files into various information data blocks corresponding to the resource files of the corresponding types;
writing index information of various types of information data blocks into the index data blocks, wherein the index information comprises index values and offset values;
combining the index data blocks written with the index information and various information data blocks into a total resource file;
respectively calculating original check codes of the index data block, the various information data blocks, the index data block and the various information data blocks, writing the original check codes into a set position of the total resource file, and generating a check file;
receiving a verification instruction, and calculating a confirmation verification code of a corresponding data block in the verification file according to the verification instruction;
and judging whether the confirmation check code is consistent with the corresponding original check code.
2. The method for checking a resource file according to claim 1, wherein after the calculating the original check codes of the index data block, the information data blocks of each type, the index data block, and the information data blocks of each type, respectively, and writing them into the set positions of the total resource file to generate the check file, the method further comprises:
setting configuration files comprising the integral corresponding relations between original check codes and the index data blocks, among the various information data blocks, among the index data blocks and among the various information data blocks; the configuration file is used for providing a verification mode and a corresponding original verification code during verification.
3. The method for checking a resource file according to claim 1, wherein the information data block includes a non-picture information data block and a picture information data block;
and when the total resource file is synthesized, storing the picture information data block at the tail of the total resource file.
4. An apparatus for verifying a resource file, the apparatus comprising:
a synthesis module: the index data block is used for extracting common information of at least two resource files to generate an index data block, the common information comprises a resource type field, a data type field and an information data size field, key data of the at least two resource files are respectively written into various information data blocks corresponding to the resource files of corresponding types, index information of the various information data blocks is written into the index data block, the index information comprises an index value and an offset value, and then the index data block written with the index information and the various information data blocks are combined into a total resource file;
a calculation module: the system comprises a general resource file, an index data block, various information data blocks, an index data block and various information data blocks, wherein the general resource file is used for storing the general resource file, the index data block and the various information data blocks;
a checking module: the verification device is used for receiving a verification instruction and calculating a confirmation verification code of a corresponding data block in the verification file according to the verification instruction;
a judging module: and the check code is used for judging whether the confirmation check code is consistent with the corresponding original check code.
5. The apparatus for verifying a resource file according to claim 4, wherein the computing module specifically includes:
a configuration module: the configuration file is used for setting the overall corresponding relation between the original check code and the index data block, among the information data blocks, among the index data block and among the information data blocks, and the configuration file is used for providing a check mode and the corresponding original check code;
a calculation submodule: the original check codes are used for respectively calculating the whole index data block, the whole information data blocks, the whole index data block and the whole information data blocks;
a storage submodule: and the system is used for storing the original check code in the set position of the total resource file.
6. Navigation device, characterized in that it comprises verification means of a resource file according to claim 4 or 5.
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| CN112445761B (en) * | 2019-08-30 | 2023-04-07 | 中移(苏州)软件技术有限公司 | File checking method and device and storage medium |
| CN111459496B (en) * | 2020-04-07 | 2021-06-08 | 珠海格力电器股份有限公司 | Method for generating tamper-proof program file and method for upgrading equipment |
| CN113064692B (en) * | 2021-04-06 | 2022-11-29 | 深圳市研强物联技术有限公司 | Method and system for generating firmware picture resource data |
| CN114528529A (en) * | 2022-02-15 | 2022-05-24 | 广州经传多赢投资咨询有限公司 | Memory xml file encryption method |
| CN115146121A (en) * | 2022-09-05 | 2022-10-04 | 舟谱数据技术南京有限公司 | Multi-data account checking method and device |
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| CN101980533A (en) * | 2010-11-12 | 2011-02-23 | 中国华录集团有限公司 | Method for implementing stunt mode function of transport stream file based on indexed file |
| CN103279474A (en) * | 2013-04-10 | 2013-09-04 | 深圳康佳通信科技有限公司 | Video file index method and system |
| CN106095462A (en) * | 2016-06-22 | 2016-11-09 | 南京南瑞继保电气有限公司 | A kind of embedded distribution system program configuration version management method |
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