CN111176944A - Block chain intelligent contract calling record analysis method, device, terminal and storage medium - Google Patents
Block chain intelligent contract calling record analysis method, device, terminal and storage medium Download PDFInfo
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- CN111176944A CN111176944A CN201911375481.3A CN201911375481A CN111176944A CN 111176944 A CN111176944 A CN 111176944A CN 201911375481 A CN201911375481 A CN 201911375481A CN 111176944 A CN111176944 A CN 111176944A
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- G—PHYSICS
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- G06F—ELECTRIC DIGITAL DATA PROCESSING
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- G06F11/30—Monitoring
- G06F11/3003—Monitoring arrangements specially adapted to the computing system or computing system component being monitored
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F11/00—Error detection; Error correction; Monitoring
- G06F11/30—Monitoring
- G06F11/3065—Monitoring arrangements determined by the means or processing involved in reporting the monitored data
Abstract
The invention discloses a method, a device, a terminal and a storage medium for analyzing a block chain intelligent contract calling record, wherein the method comprises the following steps: acquiring an intelligent contract code, analyzing the code structure to obtain a state variable and a calling method of the intelligent contract; analyzing all calling methods to obtain the corresponding relation between the calling methods and the state variables; when the intelligent contract is called, monitoring the called intelligent contract and analyzing to obtain the calling method and the incoming parameters; calculating the change condition of the specific state variable influenced by the calling according to the calling method and the incoming parameters and by combining the corresponding relation between the calling method and the state variable; and storing the change condition of the state variable and the related information of the calling into a calling record together. The invention effectively solves the problems of visual display of specific information called by the intelligent contract and source tracing of the calling process, and can visually display the change process of the state variable.
Description
Technical Field
The invention relates to a block chain technology, an intelligent contract and data visualization, in particular to a method, a device, a terminal and a storage medium for calling, recording and analyzing a block chain intelligent contract.
Background
The blockchain technology is characterized in that information stored on the blockchain cannot be forged and tampered, a blockchain consensus algorithm drives each node on the blockchain to participate in a transaction verification process, the transactions on the blockchain are guaranteed to be credible after confirmation, each node on the blockchain maintains a public ledger for storing balance and intelligent contract data of all users on a blockchain network, and any node does not allow the account maintained by the node to be modified by other nodes, so that the public ledger cannot be forged and tampered.
The intelligent contracts on the blockchain refer to a string of binary codes running on the blockchain, the intelligent contracts are called to generate a call record on the blockchain and are permanently stored in the blockchain in a transaction form, data storage, reading and writing and some logic operations on the blockchain can be realized through the intelligent contracts, and therefore some applications based on the blockchain are completed by using the intelligent contracts. After the existing intelligent contract of the block chain is called, the result called by the intelligent contract is stored in the block chain, and the calling record is not analyzed and stored, so that the real-time change of the state variable and the calling related information in the calling process cannot be intuitively displayed, and the change of the state variable in the intelligent contract is difficult to track and trace.
Disclosure of Invention
In view of this, embodiments of the present invention provide a method, an apparatus, a terminal, and a storage medium for analyzing a block chain intelligent contract invocation record.
The purpose of the invention is realized by the following technical scheme:
in a first aspect, an embodiment of the present invention provides a method for analyzing a block chain intelligent contract invocation record, including:
acquiring an intelligent contract code, analyzing the code structure to obtain a state variable and a calling method of the intelligent contract;
analyzing all calling methods to obtain the corresponding relation between the calling methods and the state variables;
when the intelligent contract is called, monitoring the called intelligent contract and analyzing to obtain the calling method and the incoming parameters;
calculating the change condition of the specific state variable influenced by the calling according to the calling method and the incoming parameters and by combining the corresponding relation between the calling method and the state variable;
and storing the change condition of the state variable and the related information of the calling into a calling record together.
Further, the state variables refer to variables used for recording various states in the intelligent contract, and a caller changes the state variables through a calling method of the intelligent contract.
Further, when the intelligent contract is called, the specific information called at one time is payload data, a specific calling method and incoming parameters in the payload are analyzed, and a called return value is obtained by combining the specific definition of the calling method.
Further, the payload data is a binary code.
Further, the change condition of the state variable refers to recording values of the state variable before and after the call respectively.
Further, the related information of the call comprises a caller and a call time.
In a second aspect, an embodiment of the present invention further provides a device for analyzing a block chain intelligent contract invocation record, including:
the acquisition module is used for acquiring an intelligent contract code and analyzing the code structure to obtain a state variable and a calling method of the intelligent contract;
the analysis module is used for analyzing all the calling methods to obtain the corresponding relation between the calling methods and the state variables;
the monitoring module is used for monitoring the called intelligent contract and analyzing the called intelligent contract to obtain the calling method and the incoming parameters when the intelligent contract is called;
the calculation module is used for calculating the change condition of the specific state variable influenced by the calling according to the calling method and the incoming parameters and by combining the corresponding relation between the calling method and the state variable;
and the storage module is used for storing the change condition of the state variable and the related information of the calling into a calling record together.
In a third aspect, an embodiment of the present invention further provides a terminal, including:
one or more processors;
a memory for storing one or more programs;
when executed by the one or more processors, cause the one or more processors to implement a method as described in the first aspect.
In a fourth aspect, the present invention further provides a computer storage medium storing computer program instructions, which when executed, implement the method according to the first aspect.
By adopting any one of the technical schemes, the embodiment of the invention has the beneficial effects that: the invention obtains the state variable and the calling method by analyzing the intelligent contract, monitors the intelligent contract calling, analyzes the payload for each calling, records the calling information and the change of the related state variable, and stores the complete calling record. Compared with the traditional intelligent contract state variable data display which is not intuitive and the query result which is single, the method effectively solves the problems of intuitive display of specific information called by the intelligent contract and source tracing of the calling process, and can intuitively display the change process of the state variable.
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 invention and not to limit the invention. In the drawings:
fig. 1 is a flowchart of a method for analyzing a block chain intelligent contract invocation record according to an embodiment of the present invention;
FIG. 2 is a flowchart of a method for parsing a block chain intelligent contract invocation record according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of an apparatus according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the technical solutions of the present application will be described in detail and completely with reference to the following specific embodiments of the present application and the accompanying drawings. It should be apparent that the described embodiments are only some of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
Fig. 1 is a flowchart of a method for parsing a block chain intelligent contract invocation record according to an embodiment of the present invention, where the method includes:
s100, acquiring an intelligent contract code, analyzing the code structure, and obtaining a state variable and a calling method of the intelligent contract;
specifically, the intelligent contract code is written in advance, contains no syntax error, can be successfully compiled by the compiler, and a copy of the intelligent contract should be successfully deployed on the block chain.
And obtaining the description of the calling method through the intelligent contract code, wherein the description comprises the method name, the parameter number and the data type of each parameter, the calling method return value number and the data type of each return value of the calling method defined in the intelligent contract.
The state variables refer to variables used for recording various states in the intelligent contract, and all the state variables are analyzed through contract codes. And obtaining the description of the calling method through the intelligent contract code, wherein the description comprises the method name, the parameter number and the data type of each parameter, the calling method return value number and the data type of each return value of the calling method defined in the intelligent contract.
Such as a transfer intelligent contract between a and B accounts. After the intelligent contract code is obtained, the intelligent contract is analyzed, and state variables, namely an account A and an account B, and a provided calling method, namely a transfer operation F, maintained in the intelligent contract are obtained.
S200, analyzing all calling methods to obtain the corresponding relation between the calling methods and the state variables;
specifically, the specific state variable changed by the calling method is analyzed according to the parameter and the return value of the calling method, all analyzed state variables are sequentially substituted into the calling method for matching, and the state variable corresponding to the calling method is obtained, and if the recursive calling method exists, the corresponding state variable needs to be recursively inquired.
Analyzing the definition of the calling method to obtain the incoming parameters and the state variables correspondingly influenced, such as the current balance of the account A and the account B, storing the corresponding relation F- > [ A, B ] of the calling method and the state variables, reducing the range of the state variables influenced by the calling method, and achieving more pertinence and more visual influence of the calling method.
S300, when the intelligent contract is called, monitoring the called intelligent contract and analyzing to obtain the calling method and the incoming parameters;
specifically, when the intelligent contract is called, the specific information called at one time is payload data, the payload data is binary code, and specific incoming parameters and return values in the payload are analyzed.
When the intelligent contract transfer operation is called, the call record analysis operation is triggered to obtain called payload data, the called payload data is analyzed to obtain a call method F, the incoming parameters are a transfer-out account A, a transfer-in account B and a transfer amount X.
S400, calculating the change condition of the specific state variable influenced by the calling according to the calling method and the incoming parameters and by combining the corresponding relation between the calling method and the state variable;
specifically, whether state variable change is involved is judged according to the corresponding relation F- > [ A, B ] of the calling method and the state variable, if the state variable is changed, values before and after the variable calling influenced by the calling method are recorded, A is changed into A-X, and B is changed into B + X.
And obtaining values before and after the corresponding state variable is called according to the corresponding relation between the calling method and the state variable.
And S500, storing the change condition of the state variable and the related information of the calling into a calling record together.
Specifically, the values before and after the state variable is called and the related information called at this time include a caller, calling time, a calling method, payload analysis data and the snapshots before and after the whole state variable, and are stored in a call record together.
And storing specific information such as a user U of a caller account A, the time of calling, the change condition [ A, B ] - > [ A-X, B + X ] of the whole state variable before and after calling, a calling method F and the like into a primary calling record by combining with calling related information.
Fig. 2 is a schematic structural diagram of an apparatus for analyzing a block chain intelligent contract call record according to an embodiment of the present invention, where a bottom layer of the apparatus is based on a block chain network, and the apparatus can execute any method for analyzing a block chain intelligent contract call record according to any embodiment of the present invention, and has a functional module and a beneficial effect corresponding to the execution of the method. As shown in fig. 2, the apparatus includes:
an obtaining module 100, configured to obtain an intelligent contract code, and analyze the code structure to obtain a state variable and a calling method of the intelligent contract;
the analysis module 200 is used for analyzing all the calling methods to obtain the corresponding relation between the calling methods and the state variables;
the monitoring module 300 is configured to monitor and analyze the called intelligent contract when the intelligent contract is called, so as to obtain the calling method and the incoming parameters;
a calculating module 400, configured to calculate, according to the calling method and the incoming parameter, a change condition of a specific state variable affected by the calling in combination with a corresponding relationship between the calling method and the state variable;
the storage module 500 is configured to store the change condition of the state variable and the related information of the call into a call record.
Fig. 3 is a schematic structural diagram of an apparatus according to an embodiment of the present invention. Fig. 3 shows a block diagram of an exemplary device 1 suitable for implementing an embodiment of the invention. The device shown in fig. 3 is only an example and should not bring any limitation to the function and scope of use of the embodiments of the present invention. Device 1 may typically be a device implementing a blockchain intelligent contract invocation record parsing method.
As shown in fig. 3, the device 1 is in the form of a general purpose computing device. The components of the device 1 may include, but are not limited to: one or more processors or processing units 2, a memory 3, and a bus 4 that connects the various system components (including the memory 3 and the processing unit 2).
The device 1 typically includes a variety of computer system readable media. Such media may be any available media that is accessible by device 1 and includes both volatile and nonvolatile media, removable and non-removable media.
The memory 3 may include computer system readable media in the form of volatile memory, such as Random Access Memory (RAM)5 and/or cache memory 6. The device 1 may further include other removable/non-removable, volatile/nonvolatile computer system storage media. By way of example only, the storage system 8 may be used to read from and write to non-removable, nonvolatile magnetic media (not shown in FIG. 3, commonly referred to as a "hard drive"). Although not shown in FIG. 3, a magnetic disk drive for reading from and writing to a removable, nonvolatile magnetic disk (e.g., a "floppy disk") and an optical disk drive for reading from or writing to a removable, nonvolatile optical disk (e.g., a CDROM, DVD-ROM, or other optical media) may be provided. In these cases, each drive may be connected to the bus 4 by one or more data media interfaces. The memory 3 may include at least one program product having a set (e.g., at least one) of program modules that are configured to carry out the functions of embodiments of the invention.
Having a set (at least one) of program modules 8 that may be stored, for example, in memory 3, such program modules 8 including, but not limited to, an operating system, one or more application programs, other program modules, and program data, each of which examples and some combination may comprise an implementation of a network environment. Program modules 8 generally perform the functions and/or methodologies of the described embodiments of the invention.
The processing unit 2 executes various functional applications and data processing by running the program stored in the memory 3, for example, implementing a block chain intelligent contract call record parsing method provided by the embodiment of the present invention.
An embodiment of the present invention further provides a computer-readable storage medium, on which a computer program (or referred to as computer-executable instructions) is stored, where the computer program is used for executing a method for parsing a block chain intelligent contract call record when the program is executed by a processor.
Computer storage media for embodiments of the invention may employ any combination of one or more computer-readable media. The computer readable medium may be a computer readable signal medium or a computer readable storage medium. A computer readable storage medium may be, for example, but not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination of the foregoing. More specific examples (a non-exhaustive list) of the computer readable storage medium would include the following: an electrical connection having one or more wires, a portable computer diskette, a hard disk, a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disc read-only memory (CDROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing. In the context of this document, a computer readable storage medium may be any tangible medium that can contain, or store a program for use by or in connection with an instruction execution system, apparatus, or device.
A computer readable signal medium may include a propagated data signal with computer readable program code embodied therein, for example, in baseband or as part of a carrier wave. Such a propagated data signal may take many forms, including, but not limited to, electro-magnetic, optical, or any suitable combination thereof. A computer readable signal medium may also be any computer readable medium that is not a computer readable storage medium and that can communicate, propagate, or transport a program for use by or in connection with an instruction execution system, apparatus, or device.
Program code embodied on a computer readable medium may be transmitted using any appropriate medium, including but not limited to wireless, wireline, optical fiber cable, RF, etc., or any suitable combination of the foregoing.
Computer program code for carrying out operations for aspects of the present invention may be written in any combination of one or more programming languages, including an object oriented programming language such as Java, Smalltalk, C + + or the like and conventional procedural programming languages, such as the "C" programming language or similar programming languages. The program code may execute entirely on the user's computer, partly on the user's computer, as a stand-alone software package, partly on the user's computer and partly on a remote computer or entirely on the remote computer or server. In the case of a remote computer, the remote computer may be connected to the user's computer through any type of network, including a Local Area Network (LAN) or a Wide Area Network (WAN), or the connection may be made to an external computer (for example, through the Internet using an Internet service provider).
It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious modifications, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in more detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.
Claims (9)
1. A block chain intelligent contract calling record analysis method is characterized by comprising the following steps:
acquiring an intelligent contract code, analyzing the code structure to obtain a state variable and a calling method of the intelligent contract;
analyzing all calling methods to obtain the corresponding relation between the calling methods and the state variables;
when the intelligent contract is called, monitoring the called intelligent contract and analyzing to obtain the calling method and the incoming parameters;
calculating the change condition of the specific state variable influenced by the calling according to the calling method and the incoming parameters and by combining the corresponding relation between the calling method and the state variable;
and storing the change condition of the state variable and the related information of the calling into a calling record together.
2. The method as claimed in claim 1, wherein the state variables refer to variables used for recording various states in the intelligent contract, and the caller changes the state variables through the calling method of the intelligent contract.
3. The method as claimed in claim 1, wherein when the intelligent contract is called, the specific information of one call is payload data, the specific calling method and incoming parameters in the payload are analyzed, and the return value of the call is obtained by combining the specific definition of the calling method.
4. A method as claimed in claim 3, wherein the payload data is binary code.
5. The method as claimed in claim 1, wherein the change of the state variable means to record the values of the state variable before and after the call.
6. The method as claimed in claim 1, wherein the information related to the call includes caller and call time.
7. A block chain intelligent contract calling record analysis device is characterized by comprising:
the acquisition module is used for acquiring an intelligent contract code and analyzing the code structure to obtain a state variable and a calling method of the intelligent contract;
the analysis module is used for analyzing all the calling methods to obtain the corresponding relation between the calling methods and the state variables;
the monitoring module is used for monitoring the called intelligent contract and analyzing the called intelligent contract to obtain the calling method and the incoming parameters when the intelligent contract is called;
the calculation module is used for calculating the change condition of the specific state variable influenced by the calling according to the calling method and the incoming parameters and by combining the corresponding relation between the calling method and the state variable;
and the storage module is used for storing the change condition of the state variable and the related information of the calling into a calling record together.
8. A terminal, characterized in that it further comprises:
one or more processors;
a memory for storing one or more programs;
when executed by the one or more processors, cause the one or more processors to implement the method of any one of claims 1-6.
9. A computer storage medium, characterized in that the computer storage medium stores computer program instructions which, when executed, implement the method of any one of claims 1-6.
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| CN112015826A (en) * | 2020-10-27 | 2020-12-01 | 腾讯科技（深圳）有限公司 | Intelligent contract security detection method based on block chain and related equipment |
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