CN111399787B - Distributed printing auditing system and auditing method - Google Patents
Distributed printing auditing system and auditing method Download PDFInfo
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- CN111399787B CN111399787B CN202010220463.4A CN202010220463A CN111399787B CN 111399787 B CN111399787 B CN 111399787B CN 202010220463 A CN202010220463 A CN 202010220463A CN 111399787 B CN111399787 B CN 111399787B
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/12—Digital output to print unit, e.g. line printer, chain printer
- G06F3/1201—Dedicated interfaces to print systems
- G06F3/1202—Dedicated interfaces to print systems specifically adapted to achieve a particular effect
- G06F3/1222—Increasing security of the print job
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/12—Digital output to print unit, e.g. line printer, chain printer
- G06F3/1201—Dedicated interfaces to print systems
- G06F3/1223—Dedicated interfaces to print systems specifically adapted to use a particular technique
- G06F3/1237—Print job management
- G06F3/1238—Secure printing, e.g. user identification, user rights for device usage, unallowed content, blanking portions or fields of a page, releasing held jobs
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/12—Digital output to print unit, e.g. line printer, chain printer
- G06F3/1201—Dedicated interfaces to print systems
- G06F3/1223—Dedicated interfaces to print systems specifically adapted to use a particular technique
- G06F3/1237—Print job management
- G06F3/1273—Print job history, e.g. logging, accounting, tracking
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/12—Digital output to print unit, e.g. line printer, chain printer
- G06F3/1201—Dedicated interfaces to print systems
- G06F3/1278—Dedicated interfaces to print systems specifically adapted to adopt a particular infrastructure
- G06F3/1281—Multi engine printer devices, e.g. one entity having multiple output engines
Abstract
The invention provides a distributed printing auditing system and an auditing method, when a terminal cannot be in communication connection with a server, the terminal searches a terminal ip address and account information of an account with approval authority from a routing table; and sending the printing request to a terminal with approval authority account login for auditing, and executing printing through a printer and recording a log after the auditing is passed. Under the condition of network disconnection, all clients automatically networking by using the smallest network bandwidth as possible, mutually connecting, and recovering most of printing audit functions by using various printing audit strategies acquired from a server before the network disconnection. After the server is offline, the print program may still log. When the server resumes the communication connection, the print initiator terminal transmits the generated print log and snapshot to the server. It is possible to realize the inspection of past print records. The risk that the global printing process is controlled by one server alone and printing cannot be performed if the network is disconnected is avoided.
Description
Technical Field
The invention relates to the technical field of printing, in particular to a distributed printing auditing system and auditing method.
Background
In the printing process, visible data such as characters and pictures in a computer or other electronic equipment are output on a record such as paper through a printer and the like.
It is generally necessary to configure a print host and a printer, and a local area network may be formed to perform a print job. At present, the printing behaviors of units such as military industry, government, scientific research, army and the like need to be stably and effectively managed and traced. Most of the existing domestic printing audit products only have one server. If the server fails/is powered off, the server is invaded/destroyed by enemies, the backbone network is destroyed, and the main network is attacked by electromagnetic pulse bombs, so that the server cannot be connected, the request and the data cannot be transferred through the server, and approval and log checking cannot be executed. So that printing cannot be performed, the printing process cannot be audited, the working efficiency is seriously affected, and secret leakage is easily caused.
Disclosure of Invention
In order to overcome the above-mentioned shortcomings in the prior art, the present invention provides a distributed print auditing system, comprising: a server, a plurality of terminals, and a printer;
each terminal is connected with a server through a network respectively;
the server and the terminal are connected with the printer through a network or a USB data line;
the server is used for checking the printing request provided by each terminal; after the approval passes the request, the printing request and the information to be printed are sent to the terminal of the printer, and the printer executes printing and records a printing log;
distributing the same multicast address to computers in the same multicast domain according to the configuration condition of the switch or the router;
the terminal is configured with a file storage processing module for storing a routing table and data transmitted and received; the routing table stores the ip address and account information of each terminal currently in each multicast group;
the terminal downloads the routing table from the server at regular intervals and updates the own routing table to obtain the latest information of each terminal;
after a terminal is started and an account number is logged in, firstly adding the terminal into a multicast group with a preset ip address, and checking whether the terminal can be connected to a server or not;
if yes, updating a routing table on the server;
if not, periodically sending the ip address and account information to the multicast address, and updating the routing table after each terminal receives the ip address and the account information;
when the terminal cannot be in communication connection with the server, the terminal searches the ip addresses of the terminals of all login approval authority accounts from the routing table; and sending the printing request to the printer for auditing, and executing printing by the printer and recording a log after the auditing is passed.
The method further comprises the following steps: the server is also configured to configure the multicast address of each terminal.
The method further comprises the following steps: the server is also used for configuring terminals with approval authorities in the system and sending the ip address and account information of the terminals logged in with the accounts with the approval authorities to other terminals.
The method further comprises the following steps: when the server resumes the communication connection, the print initiator terminal transmits the generated print log and snapshot to the server.
The invention also provides a distributed printing auditing method, which comprises the following steps:
the terminal establishes communication connection with the server;
the terminal sends the printing request and the data to be printed to the server;
the server examines the printing request sent by the terminal;
after the approval passes the request, the printing request and the information to be printed are sent to a printer, and the printer executes printing and records a printing log;
and uploading the print log to a server.
The method further comprises the following steps: the method further comprises the steps of:
when the terminal cannot be in communication connection with the server, the terminal searches a terminal ip address and account information of a login account with approval authority from a routing table;
the printing request is sent to a terminal which logs in an account with approval authority to carry out auditing, and after the auditing is passed, printing is carried out through a printer, and a log is recorded;
if the terminal with the approval authority account is not registered in the routing table, the printing operation is suspended until the server is online again or the account with the approval authority is registered in a certain terminal.
The method further comprises the following steps: the method further comprises the steps of:
checking by the terminal with the approval authority, and after the checking is passed, searching whether the terminal where the printer is located is on line or not in the routing table by the terminal;
if the terminal where the printer is located is online, directly sending the printing request and the information to be printed to the terminal;
and the terminal where the printer is located executes printing, after the printing is successful, the printing result is returned to the initiating terminal, and a printing log is generated at the printing initiating terminal for viewing.
The method further comprises the following steps: the method further comprises the steps of:
the server configures the multicast address and account information of each terminal;
the server distributes the printer to the appointed account;
any terminal is logged in by account number, and corresponding virtual printer is dynamically generated at the terminal
And printing is performed by the virtual printer, and the terminal sends the printing application information and the data to be printed to the server. If the server is not on line, searching which terminal in the routing table is logged in the account with the approval authority, and if the terminal is logged in the account with the approval authority, sending the terminal to the past for verification.
After the server or the terminal logged in with the approval authority account is approved, the data to be printed is sent to an entity physical printer corresponding to the virtual printer, printing is executed, and a printing log is stored; the print initiating terminal searches the terminal through the ip address appointed by the printer;
and establishing communication with a terminal connected with the printer to perform a print job.
The method further comprises the following steps: the method further comprises the steps of:
the server configures approval authority for the terminal in the system.
The method further comprises the following steps: the method further comprises the steps of:
the server and the terminal logging in the account with approval authority respectively check the printing authority, the printing content and the printing period of the printing initiator.
From the above technical scheme, the invention has the following advantages:
in the invention, when the terminal cannot be in communication connection with the server, the terminal searches a terminal ip address and account information of a login account with approval authority from a routing table; and sending the printing request to a terminal which logs in an account with approval authority for auditing, and executing printing through a printer and recording a log after the auditing is passed. Under the condition of network disconnection, all clients automatically networking by using the smallest network bandwidth as possible, mutually connecting, and recovering most of printing audit functions by using various printing audit strategies acquired from a server before the network disconnection.
After the server is disconnected, the print audit program can record logs. When the server resumes the communication connection, the print initiator terminal transmits the generated print log and snapshot to the server. It is possible to realize the inspection of past print records. The risk that the global printing process is controlled by one server alone and printing and auditing cannot be performed if the network is broken is avoided.
Drawings
In order to more clearly illustrate the technical solutions of the present invention, the drawings that are needed in the description will be briefly introduced below, it being obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a distributed print auditing system;
FIG. 2 is a flow chart of a distributed print auditing method.
Detailed Description
Those of ordinary skill in the art will appreciate that the elements and algorithm steps described in connection with the embodiments disclosed herein may be embodied in electronic hardware, in computer software, or in a combination of the two, and that the elements and steps of the examples have been generally described in terms of function in the foregoing description to clearly illustrate the interchangeability of hardware and software. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.
The block diagrams depicted in the figures are merely functional entities and do not necessarily correspond to physically separate entities. That is, the functional entities may be implemented in software, or in one or more hardware modules or integrated circuits, or in different networks and/or processor devices and/or microcontroller devices.
In the several embodiments provided in this application, it should be understood that the disclosed systems, devices, and methods may be implemented in other manners. For example, the apparatus embodiments described above are merely illustrative, e.g., the division of the units is merely a logical function division, and there may be additional divisions when actually implemented, e.g., multiple units or components may be combined or integrated into another system, or some features may be omitted or not performed. In addition, the coupling or direct coupling or communication connection shown or discussed with each other may be an indirect coupling or communication connection via some interfaces, devices, or elements, or may be an electrical, mechanical, or other form of connection.
The present invention provides a distributed print auditing system, as shown in FIG. 1, comprising: a server 1, a plurality of terminals 2, and a printer 3;
each terminal 2 is connected with the server 1 through a network respectively; the server 1 and the terminal 2 are connected with the printer 3 through a network or a USB data line; the server 1 is used for auditing the print request made by each terminal 2; after approval passing the request, the print request and the information to be printed are sent to the terminal 2 of the printer 3, and the printer 3 executes printing and records a print log.
And distributing the computers in the same multicast domain with the same multicast address according to the configuration condition of the switch or the router. The terminal 2 is configured with a file storage processing module for storing a routing table and data for transceiving. The routing table stores the address and account information of each terminal 2ip currently in each multicast group; the terminal 2 periodically downloads the routing table from the server 1 and updates the own routing table to obtain the latest information of each terminal 2;
after the terminal 2 is started and logs in an account, firstly adding the terminal into a multicast group with a preset multicast address, and checking whether the terminal can be connected to the server 1; if yes, updating a routing table on the server 1; if not, sending the ip address and account information of the terminal to the multicast address periodically, and updating the routing table of the terminal after each terminal 2 receives the ip address and the account information;
when the terminal 2 cannot be in communication connection with the server 1, the terminal 2 searches the ip addresses of the terminal 2 of all login approval authority accounts from the routing table; the print request is sent to the terminal 2, they are audited, and after the audit is passed, printing is performed by the printer 3, and a log is recorded.
That is, the terminal 2 configures the received multicast address and account information of the terminal 2 into a routing table, and stores the routing table into a file storage processing module; the file storage processing module is used for storing and transmitting data to be printed and the snapshot; when the terminal 2 cannot be in communication connection with the server 1, that is, the server 1 is offline, or the network connection of the server 1 in the system is disconnected, or some other reasons cause that the server 1 cannot be connected to the system, so that the terminal 2 cannot be in communication connection with the server 1, and the terminal 2 searches the ip address and account information of the terminal 2 logging in the account with approval authority from the routing table; and sending the printing request to the terminal 2 which logs in the account with approval authority for auditing, and executing printing through the printer 3 and recording a log after the auditing is passed. When the server 1 resumes the communication connection, the print initiator terminal 2 transmits the generated print log and snapshot to the server 1.
All terminals 2 of the invention uniformly join the multicast group of the preset ip no matter whether the terminals can access the server 1 or not. And the datagram is sent to the multicast ip at a frequency of 1 time per minute, and the datagram contains the current login account id of the terminal 2. Multicast occupies less bandwidth and avoids the formation of broadcast storms.
It will be appreciated that in the present invention, a printer may be connected to one or more terminals 2 of the system. The server 1 is connected with a printer, the terminals 2 connected with the printer receive printing instructions sent by other terminals 2 to be printed, acquire various parameters of the printer of each terminal 2, and transmit the parameters to the server 1 after printing is completed. The printer of the server 1 itself is scanned and a printing program is executed.
The approval authority of the server 1 can use a kernel-level hook to audit the printing task. The server 1 and the terminal 2 logging in the account with approval authority respectively check the printing authority, the printing content and the printing period of the printing initiator.
The approval function of the server 1 and the terminal 2 logging in the account with approval authority can also adopt a single-stage approval and a multi-stage approval, wherein the single-stage approval refers to that one task can be printed by one person in a specified crowd, and the multi-stage approval refers to that a plurality of single-stage approval are overlapped and the sequential approval can be printed.
After printing, a print log is formed, and print records of different terminals 2 are recorded, including print account id, print time, file name, printer name, security class, snapshot, etc.
The printing is performed by opening text/image editing software (such as word) by the user to perform printing, selecting the assigned virtual printer, and performing printing. The print request and the data to be printed are sent to the server 1 and enter an approval process. After receiving the approval passing request, the server 1 sends the printing request and the request to be printed to the terminal 2 where the real printer is located, and the printing audit client on the terminal 2 directly sends the data to be printed to the real printer to finish printing and record a log.
The terminal 2 implements the method and apparatus of the present invention in a number of ways. For example, the methods and apparatus of the present invention may be implemented by software, hardware, firmware, or any combination of software, hardware, firmware. The above-described sequence of steps for the method is for illustration only, and the steps of the method of the present invention are not limited to the sequence specifically described above unless specifically stated otherwise. Furthermore, in some embodiments, the present invention may also be embodied as programs recorded in a recording medium, the programs including machine-readable instructions for implementing the methods according to the present invention. Thus, the present invention also covers a recording medium storing a program for executing the method according to the present invention.
The server 1 within the present invention is also used to configure the multicast address and account information for each terminal 2. The terminal 2 with approval authority in the system is configured, and the multicast address and account information of the terminal 2 with approval authority are sent to other terminals 2. These are rights contents that the server 1 has.
The invention also provides a distributed printing auditing method, as shown in fig. 2, comprising the following steps:
s1, when a terminal is online, the terminal is in communication connection with a server;
s2, the terminal sends the printing request and the data to be printed to the server;
s3, the server examines the printing request sent by the terminal;
s4, after the approval passing request, the printing request and the information to be printed are sent to a printer, and the printer executes printing and records a printing log;
s5, uploading the printing log to a server.
In the method, each terminal, the server and the printer of the system can be kept normally connected. That is, the server is offline, or the network connection of the server in the system is disconnected, or the server cannot be connected to the system due to some other reasons, so that the terminal cannot be in communication connection with the server, and the terminal searches the routing table for the ip address and account information of the terminal logging in the account with approval authority;
the printing request is sent to a terminal which logs in an account with approval authority to carry out auditing, and after the auditing is passed, printing is carried out through a printer, and a log is recorded;
if the terminal with the approval authority account is not registered in the routing table, stopping printing, and printing when the server is on line again or the terminal with the approval authority account is registered in the system.
If the terminal with the approval authority account is registered in the network, the terminal with the approval authority account is registered for auditing, and after the auditing is passed, the terminal searches whether the terminal where the printer is located is on line or not in the routing table;
if the terminal where the printer is located is online, directly sending the printing request and the information to be printed to the terminal;
and the terminal where the printer is located executes printing, after the printing is successful, the printing result is returned to the initiating terminal, and a printing log is generated at the printing initiating terminal for viewing.
In the method, the system needs to configure the multicast address of each terminal by a server; the server distributes the printer to the appointed account; the print initiating terminal searches the terminal through the ip address appointed by the printer; and establishing communication with a terminal connected with the printer to perform a print job.
In order to prevent that the server is not online or the server is disconnected to cause that printing cannot be performed, the server configures approval authority for an account in the system, and the account can log in at any terminal to perform approval.
Based on the method and the system, when the terminal is online, the terminal keeps data synchronization with the server, and information such as an account number, a security level, an allocation printer (including a printer name, a security level, a terminal ip where the terminal is located and the like), an approval process (single-stage approval/multi-stage approval) and the like is stored in the terminal in an encrypted mode.
All terminals are provided with a file storage processing module which is used for storing and transmitting data to be printed and snapshots.
If the terminal cannot be connected with the server, detecting whether a printer allocated to the current terminal login account exists in the routing table, and if so, enabling the printer.
After the printing is submitted, the task is placed in a local area to wait for approval, if a terminal which logs in the approval account terminal authority exists in the routing table, an approval request is sent to the terminals, whether the file can be printed or not is approved by the terminal, and a snapshot in a local file server can be pulled to check specific printing content. Once the request of approval passing is received from any terminal with approval account login, the routing table is checked again, and whether the terminal where the real printer is located is on line is confirmed for the second time. If yes, directly sending a printing request to the terminal, pulling the data to be printed from a file server of a printing initiator by the terminal, executing printing, returning a printing result to the initiating terminal after the printing is successful, and generating a printing log at the printing initiating terminal for viewing. The log and snapshot are automatically uploaded after the server is online.
Of course, in the application, the multi-level approval can be processed, and when the approval process is half, the approval process can be correctly processed no matter the approval process is changed from the networking state to the offline state or the networking state is restored from the offline state.
The technical scheme has the advantages that: the printer can be switched randomly under a severe network, and can print as long as the assigned printer can be accessed to the computer to which the printer belongs no matter whether the server can be accessed or not. The switching is flexible, and if the network frequently fluctuates, for example, the network is dropped once in 10 seconds, the printing can be correctly executed. After the server is connected, the printing log and the snapshot are tried to be uploaded, and after the uploading is finished, the login management end can check normally without affecting the use.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (9)
1. A distributed print auditing system, comprising: a server, a plurality of terminals, and a printer;
each terminal is connected with a server through a network respectively;
the server and the terminal are connected with the printer through a network or a USB data line;
the server is used for checking the printing request provided by each terminal; after the approval passes the request, the printing request and the information to be printed are sent to the terminal of the printer, and the printer executes printing and records a printing log;
distributing the same multicast address to computers in the same multicast domain according to the configuration condition of the switch or the router;
the terminal is configured with a file storage processing module for storing a routing table and data transmitted and received; the routing table stores the ip address and account information of each terminal currently in each multicast group;
the terminal downloads the routing table from the server at regular intervals and updates the own routing table to obtain the latest information of each terminal;
after a terminal is started and an account number is logged in, firstly adding the terminal into a multicast group with a preset ip address, and checking whether the terminal can be connected to a server or not;
if yes, updating a routing table on the server;
if not, periodically sending the ip address and account information to the multicast address, and updating the routing table after each terminal receives the ip address and the account information;
when the terminal cannot be in communication connection with the server, the terminal searches the ip addresses of the terminals of all login approval authority accounts from the routing table; and sending the printing request to the printer for auditing, and executing printing by the printer and recording a log after the auditing is passed.
2. The distributed print auditing system of claim 1, wherein,
the server is also configured to configure the multicast address of each terminal.
3. The distributed print auditing system of claim 1, wherein,
the server is also used for configuring terminals with approval authorities in the system and sending the ip address and account information of the terminals logged in with the accounts with the approval authorities to other terminals.
4. The distributed print auditing system of claim 1, wherein,
when the server resumes the communication connection, the print initiator terminal transmits the generated print log and snapshot to the server.
5. A distributed print auditing method, characterized in that the method employs the distributed print auditing system according to any one of claims 1 to 4;
the method comprises the following steps:
the terminal establishes communication connection with the server;
the terminal sends the printing request and the data to be printed to the server;
the server examines the printing request sent by the terminal;
after the approval passes the request, the printing request and the information to be printed are sent to a printer, and the printer executes printing and records a printing log;
uploading the print log to a server;
when the terminal cannot be in communication connection with the server, the terminal searches a terminal ip address and account information of a login account with approval authority from a routing table;
the printing request is sent to a terminal which logs in an account with approval authority to carry out auditing, and after the auditing is passed, printing is carried out through a printer, and a log is recorded;
if the terminal with the approval authority account is not registered in the routing table, the printing operation is suspended until the server is online again or the account with the approval authority is registered in a certain terminal.
6. A distributed print auditing method according to claim 5, characterised in that the method further comprises:
checking by the terminal with the approval authority, and after the checking is passed, searching whether the terminal where the printer is located is on line or not in the routing table by the terminal;
if the terminal where the printer is located is online, directly sending the printing request and the information to be printed to the terminal;
and the terminal where the printer is located executes printing, after the printing is successful, the printing result is returned to the initiating terminal, and a printing log is generated at the printing initiating terminal for viewing.
7. A distributed print auditing method according to claim 5, characterised in that the method further comprises:
the server configures the multicast address and account information of each terminal;
the server distributes the printer to the appointed account;
the account logs in any terminal, and a corresponding virtual printer is dynamically generated at the terminal;
printing is executed through the virtual printer, and the terminal sends printing application information and data to be printed to the server; if the server is not on line, searching which terminal in the routing table logs in the account with the approval authority, and if so, sending the terminal to be audited in the past;
after the server or the terminal logged in with the approval authority account is approved, the data to be printed is sent to an entity physical printer corresponding to the virtual printer, printing is executed, and a printing log is stored; the print initiating terminal searches the terminal through the ip address appointed by the printer;
and establishing communication with a terminal connected with the printer to perform a print job.
8. A distributed print auditing method according to claim 5, characterised in that the method further comprises:
the server configures approval authority for the terminal in the system.
9. A distributed print auditing method according to claim 5, characterised in that the method further comprises:
the server and the terminal logging in the account with approval authority respectively check the printing authority, the printing content and the printing period of the printing initiator.
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| CN111949228A (en) * | 2020-07-28 | 2020-11-17 | 苏州博瑞凯德信息技术有限公司 | Emergency printing method and device and storage medium |
| CN115629725B (en) * | 2022-10-27 | 2023-10-10 | 北京鑫创数字科技股份有限公司 | Off-line printing method and device of ink jet printer, electronic equipment and storage medium |
| CN116039095A (en) * | 2023-01-11 | 2023-05-02 | 中国科学技术大学 | 3D printing method and device in distributed manufacturing mode and electronic equipment |
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