CN112615772B - Method and device for disassembling and reassembling mail based on scanning system - Google Patents
Method and device for disassembling and reassembling mail based on scanning system Download PDFInfo
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- CN112615772B CN112615772B CN202011276960.2A CN202011276960A CN112615772B CN 112615772 B CN112615772 B CN 112615772B CN 202011276960 A CN202011276960 A CN 202011276960A CN 112615772 B CN112615772 B CN 112615772B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L51/00—User-to-user messaging in packet-switching networks, transmitted according to store-and-forward or real-time protocols, e.g. e-mail
- H04L51/42—Mailbox-related aspects, e.g. synchronisation of mailboxes
Abstract
The invention provides a method and a device for disassembling and reassembling mails of a base scanning system, wherein the method comprises the following steps: triggering the disassembly and reassembly operation of the mail by the original mail arriving at the mail server; performing package unloading operation on the mail eml file, and reading Part type data by calling a self-defined reMultipart method; acquiring attachments and texts of the mails from the Part type data, and storing the read attachments and the read texts into a hard disk in an IO stream mode; and adding the key information of the original mail into the mail body to form a combined mail. According to the scheme of the invention, the function of ensuring that all information of the original mail is not changed and is not received by the receiver/sender of the original mail while the mail is forwarded is provided, the mail is intercepted, and the mail information is independently delivered to a department supervisor for checking, so that the problem of mail delivery accuracy can be effectively solved. The integrity of all information of the original mail is ensured, and meanwhile, the original mail is not received by the original mail receiver.
Description
Technical Field
The invention relates to the field of mail processing, in particular to a method and a device for disassembling and reassembling mails based on a scanning system.
Background
In a data leakage-proof product, when a sensitive mail sent by a department employee is intercepted, the mail needs to be sent to a department supervisor, the mail is sent to the department supervisor, and a certain employee is fed back to send a mail with certain sensitive information. However, because the mails of the department supervisor and the employees are usually configured on the same mail server, the employees and the department supervisor who deliver the mails can receive the mails, and finally the interception of sensitive mails fails. Similarly, when a mail from an external network containing sensitive information is to be sent to an internal network, the mail needs to be sent to a department supervisor, and since the mails of the department supervisor and employees are usually configured on the same mail server, both the employees and the department supervisor who deliver the mail can receive the mail.
Disclosure of Invention
In order to solve the technical problem, the invention provides a method and a device for disassembling and reassembling mails based on a scanning system, which are used for solving the problem that sensitive mail information cannot be only sent to a specified mailbox based on the scanning system mail system in the prior art. And the requirement problem that the integrity of all the information of the original mail is ensured and the information is not received by the receiver of the original mail is solved.
According to a first aspect of the present invention, there is provided a method of destacking and reassembling mail based on a scanning system, the method comprising the steps of:
step S101: triggering the disassembly and reassembly operation of the mail by the original mail arriving at the mail server;
step S102: performing an unload package operation on the mail eml file; the package unloading operation is to read a mail eml file as Message type data, take the mail eml file as a parameter of a customized reMultipart method, and read the Part type data by calling the customized reMultipart method;
step S103: acquiring attachments and texts of the mails from the Part type data, and storing the read attachments and the read texts into a hard disk in an IO stream mode;
step S104: reading the attachment and the text of the mail from the hard disk; adding key information of an original mail into a mail body, creating a java's Mimemessage object, setting a receiver, a sender and a body for the Mimemessage object, setting a reference to an attachment in the body, adding the attachment into the Mimemessage object, and setting an identifier corresponding to the reference to the attachment in the body to form a combined mail; the key information comprises information of a receiver, a sender and a carbon copy.
Further, the customized reMultipart method obtains the Content attribute of the parameter, and if the Content attribute of the parameter is the Multipart type, the reMultipart method is recursively called by taking the Content data of the Multipart type as the parameter until the Part type data is read.
Further, after the step S104, the method further includes:
step S105: and (3) delivering the combined mail by connecting the mail server through java to acquire return information, and if delivery fails, storing the mail information with delivery failure in a database, and waiting for a timing task so as to deliver again.
Further, the condition that the original mail arriving at the mail server triggers the operation of disassembling and reassembling the mail is that if the scanning system scans that the original mail comprises the preset keywords or hits the sensitive strategy, the operation of disassembling and reassembling the mail is triggered.
According to a second aspect of the present invention, there is provided an apparatus for disassembly and reassembly of mail based on a scanning system, the apparatus comprising:
a starting module: triggering the disassembly and reassembly operation of the mail by the original mail configured to reach the mail server;
disassembling the module: configured to perform an unload package operation on mail eml file; the package unloading operation is to read a mail eml file as Message type data, take the mail eml file as a parameter of a customized reMultipart method, and read the Part type data by calling the customized reMultipart method;
an information acquisition module: acquiring attachments and texts of the mails from the Part type data, and storing the read attachments and the read texts into a hard disk in an IO stream mode;
assembling a module: the method comprises the steps of reading attachments and texts of mails from a hard disk; adding key information of an original mail into a mail body, creating a java's Mimemessage object, setting a receiver, a sender and a body for the Mimemessage object, setting a reference to an attachment in the body, adding the attachment into the Mimemessage object, and setting an identifier corresponding to the reference to the attachment in the body to form a combined mail; the key information comprises information of a receiver, a sender and a carbon copy.
Further, the customized reMultipart method obtains the Content attribute of the parameter, and if the Content attribute of the parameter is the Multipart type, the reMultipart method is recursively called by taking the Content data of the Multipart type as the parameter until the Part type data is read.
And further, the delivery module is configured to connect the mail server through java to deliver the combined mail, acquire return information, store the mail information with delivery failure in a database if delivery fails, and wait for a timing task to deliver again.
Further, the condition that the original mail arriving at the mail server triggers the operation of disassembling and reassembling the mail is that if the scanning system scans that the original mail comprises the preset keywords or hits the sensitive strategy, the operation of disassembling and reassembling the mail is triggered.
According to a third aspect of the present invention, there is provided a system for disassembly and reassembly of mail based on a scanning system, comprising:
a processor for executing a plurality of instructions;
a memory for storing a plurality of instructions;
wherein the instructions are used for being stored by the memory and loaded by the processor to execute the method for disassembling and reassembling the mail based on the scanning system.
According to a fourth aspect of the present invention, there is provided a computer readable storage medium having a plurality of instructions stored therein; the instructions are used for loading and executing the method for disassembling and reassembling the mail based on the scanning system by the processor.
According to the scheme of the invention, the original mail is disassembled and reassembled to be assembled into a new mail for sending, so that the function of forwarding the mail while ensuring that all information of the original mail is not changed and is not received by a receiver/sender of the original mail is provided, the mail is intercepted while mail information is independently delivered to a department supervisor for checking, and the problem of mail delivery accuracy can be effectively solved. The integrity of all information of the original mail is ensured, and meanwhile, the original mail is not received by the original mail receiver.
The foregoing description is only an overview of the technical solutions of the present invention, and in order to make the technical solutions of the present invention more clearly understood and to implement them in accordance with the contents of the description, the following detailed description is given with reference to the preferred embodiments of the present invention and the accompanying drawings.
Drawings
The accompanying drawings, which 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. In the drawings:
FIG. 1 is a flowchart of a method for disassembly and reassembly of mail based on a scanning system, in accordance with an embodiment of the present invention;
FIG. 2 is a schematic diagram of a method for disassembling and reassembling mail based on a scanning system according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of a method for disassembly and reassembly of mail based on a scanning system according to yet another embodiment of the present invention;
fig. 4 is a block diagram of a device for disassembling and reassembling mail based on a scanning system according to an embodiment of the present invention.
Detailed Description
Defining:
a scanning system: the method is a system for purposefully scanning file contents, matching information such as sensitive keywords, regularization and document fingerprints, and sorting and packaging matching results.
Sensitive mails: the method refers to the mail which is scanned by a scanning system and the content of the mail is found to hit the strategy of the scanning system.
Original mail: in the process of disassembling and reassembling the mail, the former mail is disassembled
Mysql: the system is a lightweight relational database management system, is developed by MySQL AB company in Sweden, and belongs to Oracle company at present. MySQL is widely used in small and medium-sized websites on the Internet. The data is stored in different tables instead of being stored in a large warehouse, so that the speed is increased, the flexibility is improved, and the method has the advantages of small size, high speed, low cost, open source codes, free charge and the like.
First, a flowchart of a method for disassembling and reassembling mail based on a scanning system according to an embodiment of the present invention is described with reference to fig. 1. As shown in fig. 1, the method comprises the steps of:
step S101: triggering the disassembly and reassembly operation of the mail by the original mail arriving at the mail server;
step S102: performing an unload package operation on the mail eml file; the package unloading operation is to read a mail eml file as Message type data, take the mail eml file as a parameter of a customized reMultipart method, and read the Part type data by calling the customized reMultipart method;
step S103: acquiring attachments and texts of the mails from the Part type data, and storing the read attachments and the read texts into a hard disk in an IO stream mode;
step S104: reading the attachment and the text of the mail from the hard disk; adding key information of an original mail into a mail body, creating a java's Mimemessage object, setting a receiver, a sender and a body for the Mimemessage object, setting a reference to an attachment in the body, adding the attachment into the Mimemessage object, and setting an identifier corresponding to the reference to the attachment in the body to form a combined mail; the key information comprises information of a receiver, a sender and a carbon copy.
The step S101: the original mail arriving at the mail server triggers the mail disassembly and reassembly operation, wherein:
the original mail that arrives at the mail server may be a mail sent from the internal network to the external network, or a mail sent from the external network to the internal network.
The condition that the original mail arriving at the mail server triggers the operation of disassembling and reassembling the mail is that when the scanning system scans that the original mail comprises preset keywords or hits a sensitive strategy, the operation of disassembling and reassembling the mail is triggered.
For example, the external network sends the original mail to the mail server, and after the original mail enters the scanning system for scanning, the sensitive strategy is hit, the scanned result is stored in the database for recording, and meanwhile, the mail is triggered to be disassembled and reassembled.
The step S102: performing an unload package operation on the mail eml file; the package unloading operation is to read a mail eml file as Message type data, take the mail eml file as a parameter of a customized reMultipart method, and read the Part type data by calling the customized reMultipart method;
the user-defined reMultipart method obtains the Content attribute of the parameter, and if the Content attribute of the parameter is the Multipart type, the reMultipart method is called recursively by taking the Content data of the Multipart type as the parameter until the Part type data is read.
In this embodiment, mail parsing is to recursively unload the eml file into packages. In the unloading package, the eml file is read as a Message type, the Content attribute is obtained from the Message, the Content is judged, if the Content type is Multipar, the package is considered to be a small package, and the method is continuously called recursively until the Content type is a Part type. Wherein, the Content attribute has only two types, namely Multipart type and Part type, and the two types are defined by java. For the Part type, information of each Part of the mail can be acquired from the Part type.
At this time, each Part of the mail, such as an attachment and a body, is obtained from the Part type, and then the mail attachment and the content of the body of the mail are stored in the hard disk in an IO stream mode.
The step S104: reading the attachment and the text of the mail from the hard disk; adding key information of an original mail into a mail body, creating a java's Mimemessage object, setting a receiver, a sender and a body for the Mimemessage object, setting a reference to an attachment in the body, adding the attachment into the Mimemessage object, and setting an identifier corresponding to the reference to the attachment in the body to form a combined mail; the key information comprises recipient information, sender information and copying and sending person information, wherein:
the attachment is added to the MiMessage object, and an identifier corresponding to the reference of the attachment in the text is set, so that the text can reference the attachment, the combined mail is realized through a program, and the combined mail is the same as or similar to the mail received by the mail server.
The attachment of the original mail is added to the combined mail in a node mode so as to ensure that all information in the original mail cannot be lost.
After the step S104, the method further includes:
step S105: and delivering the combined mail by connecting a mail server through java to acquire return information, and if delivery fails, storing the mail information with delivery failure into a database, and waiting for a timing task so as to deliver the mail again.
The method and the system solve the problem of the requirement that when the mail is forwarded based on the scanning system, the integrity of all information of the original mail is guaranteed and the mail is not received by an original mail receiver, and the forwarded mail can automatically assemble information such as the receiver, the sender, the transcription and delivery person, the subject and the like of the original mail in the mail text.
Fig. 2 and 3 show a method for disassembling and reassembling mail based on a scanning system according to another embodiment of the present invention.
In another embodiment, the function of preventing sensitive data leakage of the mail is realized based on a plurality of mail proxy servers and a plurality of scanning systems, and the specific process is as follows:
step S301: the customer sends an email;
step S302: the mail proxy server receives the mail, the scanning system scans the mail content and hits the sensitive strategy;
step S303: storing the scanning result into a memory and a database;
step S304: disassembling the original mail;
step S305: assembling a new mail according to the disassembly result;
step S305: and delivering the new mail to a mail agent server, storing a delivery result of the mail agent server to a database, and waiting for a timing task to pull up the mail which fails to be delivered to be sent again if the mail fails to be delivered.
The embodiment of the present invention further provides a device for disassembling and reassembling mails based on a scanning system, as shown in fig. 4, the device includes:
a starting module: triggering the disassembly and reassembly operation of the mail by the original mail configured to reach the mail server;
disassembling the module: configured to perform an unload package operation on mail eml files; the package unloading operation is to read a mail eml file as Message type data, take the mail eml file as a parameter of a customized reMultipart method, and read the Part type data by calling the customized reMultipart method;
an information acquisition module: acquiring attachments and texts of the mails from the Part type data, and storing the read attachments and the read texts into a hard disk in an IO stream mode;
assembling the module: the method comprises the steps of reading attachments and texts of mails from a hard disk; adding key information of an original mail into a mail body, creating a java's Mimemessage object, setting a receiver, a sender and a body for the Mimemessage object, setting a reference to an attachment in the body, adding the attachment into the Mimemessage object, and setting an identifier corresponding to the reference to the attachment in the body to form a combined mail; the key information comprises information of a receiver, a sender and a carbon copy.
The embodiment of the invention further provides a system for disassembling and reassembling the mails based on the scanning system, which comprises the following steps:
a processor for executing a plurality of instructions;
a memory to store a plurality of instructions;
wherein the instructions are stored in the memory and loaded by the processor to perform a method of disassembling and reassembling mail based on a scanning system as described above.
The embodiment of the invention further provides a computer readable storage medium, wherein a plurality of instructions are stored in the storage medium; the instructions are used for loading and executing the method for disassembling and reassembling the mail based on the scanning system.
It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.
In the embodiments provided in the present invention, it should be understood that the disclosed system, apparatus and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and there may be other divisions in actual implementation, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, or in a form of hardware plus a software functional unit.
The integrated unit implemented in the form of a software functional unit may be stored in a computer-readable storage medium. The software functional unit is stored in a storage medium and includes several instructions to enable a computer device (which may be a personal computer, a physical machine Server, or a network cloud Server, etc., and needs to install a Windows or Windows Server operating system) to perform some steps of the method according to various embodiments of the present invention. And the aforementioned storage medium includes: various media capable of storing program codes, such as a usb disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and any simple modification, equivalent change and modification made to the above embodiment according to the technical spirit of the present invention are still within the scope of the technical solution of the present invention.
Claims (6)
1. A method for disassembly and reassembly of mail based on a scanning system, comprising the steps of:
step S101: triggering the disassembly and reassembly operation of the mail by the original mail arriving at the mail server;
step S102: performing an unload package operation on the mail eml file; the package unloading operation is to read a mail eml file as Message type data, take the mail eml file as a parameter of a customized reMultipart method, and read the Part type data by calling the customized reMultipart method;
step S103: acquiring attachments and texts of the mails from the Part type data, and storing the read attachments and the read texts into a hard disk in an IO stream mode;
step S104: reading the attachment and the text of the mail from the hard disk; adding key information of an original mail into a mail body, creating a java's Mimemessage object, setting a receiver, a sender and a body for the Mimemessage object, setting a reference to an attachment in the body, adding the attachment into the Mimemessage object, and setting an identifier corresponding to the reference to the attachment in the body to form a combined mail; the key information comprises recipient, sender and copying information;
after the step S104, the method further includes:
step S105: delivering the combined mail through a java connection mail server to obtain return information, if delivery fails, storing the mail information with delivery failure in a database, and waiting for a timing task to deliver again;
the user-defined reMultipart method obtains the Content attribute of the parameter, if the Content attribute of the parameter is the Multipart type, the reMultipart method is called recursively by taking the Content data of the Multipart type as the parameter until the Part type data is read.
2. The method for disassembly and reassembly of mail as recited in claim 1, wherein the condition for triggering the disassembly and reassembly operation of the original mail arriving at the mail server is that if the original mail scanned by the scanning system includes a predetermined keyword or hit a sensitive policy, the disassembly and reassembly operation of the mail is triggered.
3. An apparatus for disassembly and reassembly of mail based on a scanning system, the apparatus comprising:
a starting module: triggering the disassembly and reassembly operation of the mail by the original mail configured to reach the mail server;
disassembling the module: configured to perform an unload package operation on mail eml file; the package unloading operation is to read a mail eml file as Message type data, take the mail eml file as a parameter of a self-defined reMultipart method, and read the Part type data by calling the self-defined reMultipart method;
an information acquisition module: acquiring attachments and texts of the mails from the Part type data, and storing the read attachments and the read texts into a hard disk in an IO stream mode;
assembling the module: the method comprises the steps of reading attachments and texts of mails from a hard disk; adding key information of an original mail into a mail body, creating a java's Mimemessage object, setting a receiver, a sender and a body for the Mimemessage object, setting a reference to an attachment in the body, adding the attachment into the Mimemessage object, and setting an identifier corresponding to the reference to the attachment in the body to form a combined mail; the key information comprises recipient, sender and copying information;
the delivery module is configured to be connected with a mail server through java to deliver the combined mail, obtain return information, store the mail information with delivery failure in a database if the delivery fails, and wait for a timing task to deliver again;
the user-defined reMultipart method obtains the Content attribute of the parameter, if the Content attribute of the parameter is the Multipart type, the reMultipart method is called recursively by taking the Content data of the Multipart type as the parameter until the Part type data is read.
4. The apparatus for disassembly and reassembly of mail as recited in claim 3, wherein the condition for triggering the mail disassembly and reassembly operation of the original mail arriving at the mail server is that the original mail scanned by the scanning system includes a predetermined keyword or hit sensitivity policy, the mail disassembly and reassembly operation is triggered.
5. A system for destacking and reassembling mail based on a scanning system, comprising:
a processor for executing a plurality of instructions;
a memory to store a plurality of instructions;
wherein the instructions are stored by the memory and loaded by the processor to perform the method of disassembly and reassembly of mail based on a scanning system as claimed in any one of claims 1-2.
6. A computer-readable storage medium having a plurality of instructions stored therein; the instructions for loading and executing by a processor the method of disassembly and reassembly of scan system based mail according to any of claims 1-2.
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