JP2024018408A - Computer program for terminal device and terminal device - Google Patents

Abstract

To provide a technique that allows a terminal device to communicate with a communication device using an appropriate protocol.SOLUTION: A terminal device receives, from a first communication device, first protocol information indicating that the first communication device supports a first protocol and does not support a second protocol, and receives, from a second communication device, second protocol information indicating that the second communication device supports the first protocol and supports the second protocol. When receiving the first protocol information from the first communication device and acquiring a first setting instruction, the terminal device transmits a first setting command that is according to the first protocol to the first communication device. When receiving the second protocol information from the second communication device and acquiring a second setting instruction, the terminal device transmits a second setting command that is according to the second protocol to the second communication device.SELECTED DRAWING: Figure 3

Description

This specification discloses a technology related to a terminal device that performs communication with a communication device that stores management information in which an OID (abbreviation for Object ID) and a setting value are associated.

Patent Document 1 discloses a management device that manages devices according to SNMP (abbreviation for Simple Network Management Protocol).

Japanese Patent Application Publication No. 2009-211175

This specification provides a technology that allows a terminal device to communicate with a communication device using an appropriate protocol.

This specification discloses a computer program for a terminal device. The computer program causes the computer of the terminal device to operate as follows: a first protocol information receiving unit that receives first protocol information from a first communication device; , the first protocol information receiving unit is different from the first communication device, indicating that the first communication device supports a first protocol and does not support a second protocol. a second protocol information receiving unit that receives second protocol information from a second communication device, the second protocol information indicating that the second communication device supports the first protocol; and the second protocol information receiving unit, which indicates that the second protocol is supported, and the first protocol information is received from the first communication device, and the setting command is transmitted to the first communication device. a first setting command transmitter that transmits a first setting command according to the first protocol to the first communication device when a first setting instruction to be sent to the first communication device is acquired; The first setting command includes a first OID (abbreviation of Object ID) of MIB (abbreviation of Management Information Base) and a first setting value, and the first setting command includes: , the first setting command transmitter, which is a command requesting to write the first setting value in the first management information of the first communication device in association with the first OID; when the second protocol information is received from the second communication device and a second configuration instruction for transmitting a configuration command to the second communication device is obtained, a second setting command transmitter configured to send a second setting command to the second communication device, the second setting command including a second OID of the MIB, a second setting value, and a second setting value; , the second setting command is a command requesting to write the second setting value in the second management information of the second communication device in association with the second OID. It may function as a second setting command transmitter.

According to the above configuration, the terminal device sends the first setting command according to the first protocol to the first communication device that supports the first protocol and does not support the second protocol. and transmits a second configuration command according to the second protocol to a second communication device that supports the first protocol and also supports the second protocol. Therefore, the terminal device can send the configuration command to the communication device using an appropriate protocol.

This specification also discloses a computer program for a terminal device. The computer program causes the computer of the terminal device to operate as follows: a first protocol information receiving unit that receives first protocol information from a first communication device; , the first protocol information receiving unit is different from the first communication device, indicating that the first communication device supports a first protocol and does not support a second protocol. a second protocol information receiving unit that receives second protocol information from a second communication device, the second protocol information indicating that the second communication device supports the first protocol; and the second protocol information receiving unit, which indicates that the second protocol is supported, and the first protocol information is received from the first communication device, and the acquisition command is transmitted to the first communication device. a first acquisition command transmitter that transmits a first acquisition command according to the first protocol to the first communication device when a first acquisition instruction to be transmitted to the first communication device is acquired; The first acquisition command includes a third OID of the MIB, and the first acquisition command is associated with the third OID in first management information of the first communication device. the first acquisition command transmitting unit, which is a command requesting transmission of the third setting value that has been set; and when the first acquisition command is transmitted to the first communication device, the first a first response command receiving unit that receives a first response command including the third setting value from the communication device; and a first response command receiving unit that receives and acquires the second protocol information from the second communication device. a second acquisition command for transmitting a second acquisition command according to the second protocol to the second communication device when a second acquisition instruction for transmitting a command to the second communication device is acquired; , wherein the second acquisition command includes a fourth OID of the MIB, and the second acquisition command is associated with the fourth OID in second management information. the second acquisition command transmitter, which is a command requesting transmission of a fourth setting value, and the second communication It may function as a second response command receiving section that receives a second response command including the fourth setting value from the device.

According to the above configuration, the terminal device sends the first acquisition command according to the first protocol to the first communication device that supports the first protocol and does not support the second protocol. and transmits a second acquisition command according to the second protocol to a second communication device that supports the first protocol and also supports the second protocol. Therefore, the terminal device can send the acquisition command to the communication device using an appropriate protocol.

The computer readable storage medium that stores the above computer program and the terminal device itself are also new and useful. Also, the method performed by the terminal device is novel and useful. Further, a communication system including the above-mentioned terminal device, first communication device, and second communication device is also new and useful.

FIG. 1 is a diagram showing the configuration of a communication system. It is a figure showing an example of each table. FIG. 3 is a diagram showing a sequence of cases A1 and A2 in which a search process is executed. FIG. 3 is a diagram showing a flowchart of command processing. It is a figure which shows the flowchart of HTTPS processing. FIG. 6 is a diagram showing sequences of case B and case C when HTTPS is used. It is a figure which shows the sequence of case D and case E when SNMP is used. FIG. 7 is a diagram illustrating a sequence in a case where writing of a setting value fails in a comparative example. It is a figure which shows an example of the 2nd management table and an authentication table in a 5th modification.

(Configuration of communication system 2; Figure 1)
As shown in FIG. 1, the communication system 2 includes printers 10A and 10B and a terminal device 100. The devices 10A, 10B, and 100 are connected to a LAN (abbreviation for Local Area Network) 6 and can communicate with each other via the LAN 6. The LAN 6 may be a wired LAN or a wireless LAN. In this embodiment, the printers 10A and 10B write or transmit setting values in response to a request command (that is, a SET command, a POST command, or a GET command, which will be described later) from the terminal device 100. .

(Configuration of printers 10A and 10B)
Each printer 10A, 10B is a peripheral device (for example, a peripheral device of the terminal device 100) that can execute a printing function. In a modified example, each of the printers 10A and 10B may be a multi-function device that can perform a scanning function, a FAX function, etc. in addition to a printing function.

The printer 10A supports SNMP (abbreviation for Simple Network Management Protocol) and does not support HTTPS (abbreviation for Hyper Text Transfer Protocol Secure). SNMP and HTTPS will be explained in detail later. The printer 10A has a printer name "PRA".

The printer 10A includes a nonvolatile memory 34A and a volatile memory 36A. The nonvolatile memory 34A is a memory whose stored information is not erased even if the printer 10A is powered off. The nonvolatile memory 34A stores a first management table 38A. The volatile memory 36A is a memory whose stored information is erased when the printer 10A is powered off. The volatile memory 36A temporarily stores information necessary for the printer 10A to perform processing.

The printer 10B supports SNMP as well as HTTPS. Printer 10B has a printer name "PRB". The printer 10B includes a nonvolatile memory 34B in which a second management table 38B is stored, and a volatile memory 36B. Below, printers 10A and 10B may be collectively referred to as "printer 10."

(Configuration of terminal device 100)
The terminal device 100 is a user terminal such as a desktop PC, a notebook PC, a tablet PC, or a mobile phone (for example, a smartphone). The terminal device 100 includes an operation section 112, a display section 114, a communication interface 116, and a control section 130. Hereinafter, the interface will be referred to as "I/F".

The operation unit 112 is an I/F for inputting various instructions to the terminal device 100. The display unit 114 is a display for displaying various information. The display section 114 is a so-called touch panel, and also functions as an operation section. Communication I/F 116 is connected to LAN 6. Communication I/F 116 may be a wireless I/F or a wired I/F.

The control unit 130 includes a CPU 132 and a memory 134. CPU 132 executes various processes according to programs 136 and 138 stored in memory 134. The memory 134 is composed of volatile memory, nonvolatile memory, and the like. The memory 134 stores an OS (abbreviation for operating system) program 136 and a setting application 138. In the following, the settings application 138 will be referred to as "application 138." The OS program 136 is a program for controlling the basic operations of the terminal device 100. The application 138 is an application for managing the printer 10 using the terminal device 100. Memory 134 may also store a privilege table 140.

(Description of each table 38A, 38B, 40, 140; Figure 2)
Referring to FIG. 2, first management table 38A stored in nonvolatile memory 34A of printer 10A, second management table 38B stored in nonvolatile memory 34B of printer 10B, and nonvolatile memory of printer 10B. The authentication table 40 stored in 34B and the authority table 140 that can be stored in the memory 134 of the terminal device 100 will be explained.

The first management table 38A of the printer 10A is a table for storing various information about the printer 10A. The information includes, for example, the administrator address of the printer 10A, the remaining amount of consumables, the MAC address, and the like.

The information stored in the first management table 38A further includes communication settings for the printer 10A to perform communication. The communication settings include the IP address of the printer 10A, Proxy settings, etc. Information not illustrated in FIG. 2 includes APIPA (abbreviation for Automatic Private IP Addressing) settings, Network Reset, Reboot (i.e. restart), installation location of printer 10A, access destination, error history, status (printing in progress, standby, etc.). ), print settings (for example, default print resolution), etc. The first management table 38A stores the above-described various information using a tree structure (that is, a hierarchical structure). A collection of various information having this tree structure is called "MIB" (abbreviation for Management Information Base).

Specifically, the first management table 38A stores contents, OID (abbreviation for Object ID), and MIB values in association with each other. The content is a character string that indicates the meaning of the information. OID is an identifier that identifies information. The MIB value indicates a specific value of information (ie, a set value).

The second management table 38B of the printer 10B is a table for storing various information about the printer 10B. In this embodiment, the information stored in the second management table 38B is the same as the information stored in the first management table 38A. Note that in a modification, the information stored in the second management table 38B and the information stored in the first management table 38A may be different.

The second management table 38B stores contents, OIDs, MIB values, and administrator authority in association with each other. The administrator authority indicates either "ON" indicating that administrator authentication is required, or "OFF" indicating that administrator authentication is not required.

The authentication table 40 of the printer 10B is a table for storing authentication information. The authentication table 40 stores user IDs and passwords in association with each other. The authentication table 40 includes administrator authentication information AI1 in which the user ID "U1" and password "PW1" are associated, and general authentication information AI2 in which the user ID "public" and password "public" are associated. , is memorized. The administrator authentication information AI1 is authentication information used for administrator authentication, and is information registered by the administrator. General authentication information AI2 is authentication information used for general authentication to authenticate general users different from administrators. General authentication information AI2 may be a default value. The password "PW1" of the administrator authentication information AI1 is encrypted, and the password "public" of the general authentication information AI2 is not encrypted. By encrypting the password of the administrator authentication information AI1, the security level can be increased.

The authority table 140 of the terminal device 100 is a table for storing administrator authority. The authority table 140 stores contents, OIDs, and administrator authority in association with each other. The authority table 140 is the same as the second management table 38B of the printer 10B, except that it does not include MIB values.

(Communication protocol between each printer 10A, 10B and terminal device 100)
The communication protocol for communicating MIB values between the printer 10A, etc. and the terminal device 100 is a protocol that follows UDP (abbreviation for User Datagram Protocol) of the transport layer of the OSI (abbreviation for Open Systems Interconnection) reference model. is widely known. Specifically, SNMP (abbreviation for Simple Network Management Protocol) is known. In this embodiment, the terminal device 100 uses, in addition to SNMP, a communication protocol that follows TCP (abbreviation for Transmission Control Protocol) of the transport layer of the OSI reference model as a communication protocol for communicating MIB values. . Specifically, HTTPS (abbreviation for Hyper Text Transfer Protocol Secure) is used. HTTPS has a higher level of security than SNMP because it employs user authentication and data encryption.

(search process)
Referring to FIG. 3, a search process performed to store authority table 140 in memory 134 of terminal device 100 will be described.

(Case A1; Figure 3)
A case A1 in which SNMP of the printer 10A is enabled and SNMP and HTTPS of the printer 10B are enabled will be described.

When the terminal device 100 receives an operation for searching for a printer connected to the LAN 6 (hereinafter referred to as a "search operation") at T10, it broadcasts a capability information request. The capability information request is a command for requesting transmission of capability information including a printer name, information indicating protocols supported by the printer, and information indicating enabled protocols. The ability information request is also a command that requests transmission of information other than the MIB value in the management table, if the printer that has received the ability information stores a management table that has administrator authority.

At T20, the terminal device 100 receives the first capability information including the printer name "PRA", support information "SNMP", and ON information "SNMP" from the printer 10A, and at T22, the first capability information is received from the printer 10A. is stored in the memory 134.

At T30, the terminal device 100 receives the printer name "PRB", support information "SNMP, HTTPS", ON information "SNMP, HTTPS", and information other than the MIB value in the second management table 38B from the printer 10B. and stores the second capability information in the memory 134 at T32. The terminal device 100 stores information other than the received MIB values in the memory 134 as the authority table 140.

The terminal device 100 determines that the support information (i.e., SNMP and HTTPS) and the ON information (i.e., SNMP and HTTPS) match in the second capability information. In this case, the terminal device 100 displays a printer selection screen including the received printer names "PRA" and "PRB" at T40. This completes the search process.

Note that the transmission of the capability information request and the reception of the capability information are performed using SNMP. Common printers support SNMP. Therefore, the terminal device 100 can reliably receive capability information from the printer.

(Case A2; Figure 3)
Case A2 will be described in which SNMP of the printer 10A is enabled, SNMP of the printer 10B is enabled, and HTTPS of the printer 10B is disabled.

The terminal device 100 accepts a search operation at T110. In this case, the same processing as T12 to T22 of case A1 is executed between the terminal device 100, the printer 10A, and the printer 10B.

At T130, the terminal device 100 receives the printer name "PRB", support information "SNMP, HTTPS", ON information "SNMP", and management information other than the MIB value in the second management table 38B from the printer 10B. receiving second capability information including; In this case, since HTTPS of the printer 10B is disabled, the ON information in the second capability information does not include "HTTPS". Further, the second capability information does not include information other than the MIB value in the management table. T132 is similar to T32 in case A1.

The terminal device 100 determines that the support information (i.e., SNMP and HTTPS) and the ON information (i.e., SNMP) do not match in the second capability information. Specifically, the terminal device 100 determines that HTTPS, which has a high security level, is disabled. In this case, at T140, the terminal device 100 displays a printer selection screen including the received printer names "PRA" and "PRB" and a message prompting the user to enable HTTPS for the printer 10B. In this case, the printer name "PRB" is further emphasized. Specifically, the printer name "PRB" is shown in bold, and the printer name "PRB" is also underlined. This completes the search process. According to the above configuration, the user can know that HTTPS of the printer 10B is disabled. Then, the user can increase the security level by enabling HTTPS of the printer 10B.

(Command processing of terminal device 100: FIG. 4)
With reference to FIG. 4, command processing executed by the CPU 132 of the terminal device 100 according to the application 138 will be described. When the printer selection screen is displayed, the process shown in FIG. 4 is executed. Note that since all communications in the embodiment are performed via the communication interface 116, a description of "via the communication interface 116" will be omitted below.

In S10, the CPU 132 accepts an operation (hereinafter referred to as a "printer selection operation") for selecting a printer name to communicate with from among one or more printer names displayed on the printer selection screen. monitor. In the following, a printer having a communication target printer name will be referred to as a "target printer."

In S12, the CPU 132 executes protocol determination processing. The protocol determination process is a process for determining a communication protocol (hereinafter referred to as "utilization protocol") to be used for communication with the target printer, using the capability information in the memory 134. Specifically, the CPU 132 identifies capability information corresponding to the target printer, and identifies ON information included in the capability information. If the specified ON information includes one communication protocol, the CPU 132 determines the one communication protocol as the protocol to be used. On the other hand, if the specified ON information includes two or more communication protocols, the CPU 132 determines the communication protocol with the highest security level as the protocol to be used.

For example, when the printer 10A is the target printer and the ON information in the first capability information includes one communication protocol "SNMP", the CPU 132 determines SNMP as the protocol to be used. If the printer 10B is the target printer and the ON information in the second capability information includes one communication protocol "SNMP", the CPU 132 determines SNMP as the protocol to be used. Further, if the printer 10B is the target printer and the ON information in the second capability information includes two communication protocols "SNMP" and "HTTPS", the CPU 132 selects HTTPS, which has the highest security level, as the protocol to be used. decide. In this way, the CPU 132 can appropriately determine the protocol to be used according to the capability information received from the printer 10.

In S14, the CPU 132 determines whether the protocol to be used determined in S12 is SNMP. If the usage protocol is SNMP (YES in S14), the CPU 132 proceeds to S20. If YES is determined in S14, the subsequent processing is executed according to HTTPS. On the other hand, if the usage protocol is not SNMP, that is, if the usage protocol is HTTPS (NO in S14), the CPU 132 proceeds to S40.

In S20, the CPU 132 determines whether a setting operation has been accepted. The setting operation when the protocol used is SNMP includes an operation of specifying information to be set (for example, an IP address), and an operation of specifying a changed character string for the specified information. When accepting a setting operation (YES in S20), the CPU 132 determines that a setting instruction has been acquired, and proceeds to S22. On the other hand, when accepting the acquisition operation (NO in S20), the CPU 132 determines that the acquisition instruction has been acquired, and proceeds to S30. The acquisition operation when the usage protocol is SNMP includes an operation of specifying information to be acquired (for example, an IP address).

In S22, the CPU 132 sends a SET command including the OID of the information specified in the setting operation and the character string specified in the setting operation to the target printer. When receiving a SET command from the terminal device 100, the target printer identifies the OID and character string in the SET command. Then, the target printer writes the identified character string as an MIB value in a management table (hereinafter referred to as "target management table") of the target printer in association with the identified OID. The target printer then transmits to the terminal device 100 a response command that includes the OID of the information specified in the setting operation and status information indicating that writing of the MIB value has been completed.

In S24, the CPU 132 receives a response command from the target printer. Upon completion of S24, the CPU 132 ends the process of FIG.

Further, in S30, the CPU 132 transmits a GET command including the OID of the information specified in the acquisition operation to the target printer. When receiving a GET command from the terminal device 100, the target printer acquires the MIB value associated with the OID included in the GET command from the target management table. Then, the CPU 132 transmits a response command including the acquired MIB value to the terminal device 100.

In S32, the CPU 132 receives a response command from the target printer. Further, the CPU 132 causes the display unit 114 to display information in the response command. This allows the user to know the settings within the target printer. Upon completion of S32, the CPU 132 ends the process of FIG.

Further, when determining NO in S14, the CPU 132 executes HTTPS processing in S40. The HTTPS process is a process in which communication is performed between the terminal device 100 and the target printer according to HTTPS. Upon completion of S40, the CPU 132 ends the process of FIG.

(HTTPS processing; Figure 5)
The HTTPS process executed in S40 of FIG. 4 will be described with reference to FIG. 5. In S60, the CPU 132 determines whether a setting operation has been accepted. When the usage protocol is HTTPS, the setting operations include specifying the information to be set (for example, IP address), specifying the changed character string for the specified information, and entering authentication information. including operations. When accepting a setting operation (YES in S60), the CPU 132 determines that a setting instruction has been obtained, and proceeds to S70. On the other hand, when accepting the acquisition operation (NO in S60), the CPU 132 determines that the acquisition instruction has been acquired, and proceeds to S100. The acquisition operation when the usage protocol is HTTPS includes an operation of specifying information to be acquired (for example, an IP address) and an operation of inputting authentication information.

In S70, the CPU 132 determines whether the administrator authority associated with the OID (hereinafter referred to as "target OID") corresponding to the information specified in S60 is "ON" in the authority table 140. to judge. If the administrator authority is "ON" (YES in S70), the CPU 132 proceeds to S72, and if the administrator authority is "OFF" (NO in S70), the process proceeds to S80.

In S72, the CPU 132 displays a first input field for inputting authentication information for the administrator of the printer 10B. As shown in FIG. 6, the first input field includes a message prompting the administrator of the printer 10B to input authentication information, a field for inputting a user ID, and a field for inputting a password.

In S74 of FIG. 5, the CPU 132 monitors whether authentication information is input into the first input field. If the authentication information is input in the first input field, the CPU 132 determines YES in S74 and proceeds to S90.

Further, in S80, the CPU 132 displays a second input field for inputting the authentication information of the administrator of the printer 10B or the authentication information of the general user of the printer 10B. As shown in FIG. 6, the second input field includes a message prompting the user to input the authentication information of the administrator of the printer 10B or the authentication information of the general user of the printer 10B, a field for entering the user ID, and a field for entering the password. and, including.

In S82 of FIG. 5, the CPU 132 monitors whether authentication information is input into the second input field. If the authentication information is input in the second input field, the CPU 132 determines YES in S82 and proceeds to S90.

In S90, the CPU 132 sends an HTTPS command including authentication information to the target printer. When the target printer receives an HTTPS command from the terminal device 100, it identifies the end of the OID in the command, and identifies the administrator authority associated with the end of the identified OID in the second management table 38. The target printer performs authentication using administrator authentication information AI1 when the specified administrator authority is "ON," and uses general authentication information when the specified administrator authority is "OFF." Execute authentication using AI2. If the authentication using administrator authentication information AI1 or general authentication information AI2 is successful, the target printer sends a response command containing information "OK" indicating successful authentication to the terminal device 100, and if the authentication fails. Then, a response command including information "NG" indicating authentication failure is transmitted to the terminal device 100. Note that authentication in the HTTPS process is authentication according to the HTTPS digest authentication method or basic authentication method. According to such a configuration, the mechanism used for authentication can be simplified.

In S92, the CPU 132 determines whether a response command including the information "OK" has been received from the target printer. If the CPU 132 receives a response command that includes the information "OK" from the target printer (YES in S92), the process proceeds to S94, and if it receives a response command that does not include the information "OK" from the target printer (NO in S92). Then, the process of FIG. 5 ends. Note that when determining NO in S94, the CPU 132 causes the display unit 114 to display information indicating that the authentication has failed.

In S94, the CPU 132 executes a key exchange with the target printer. As a result, information in the POST command and response command is encrypted in subsequent communications (for example, S96 and S98) between the terminal device 100 and the target printer. In this way, since the information in the command is encrypted, the security level can be increased.

In S96, the CPU 132 sends a POST command including the OID of the information specified in the setting operation and the character string specified in the setting operation to the target printer. When receiving a POST command from the terminal device 100, the target printer identifies the OID and character string in the POST command. Then, the target printer writes the specified character string as an MIB value in association with the specified OID in the target management table. The target printer then transmits to the terminal device 100 a response command that includes the OID of the information specified in the setting operation and status information indicating that writing of the MIB value has been completed.

In S98, the CPU 132 receives a response command from the target printer. Upon completion of S98, the CPU 132 ends the process of FIG.

Furthermore, when the determination in S60 is NO, the CPU 132 executes S100. The process executed in S100 is similar to the process executed in S70 to S90. S110 and S112 are similar to S92 and S94, respectively. As a result, the information in the GET command and response command is encrypted in subsequent communications (for example, S114 and S116) between the terminal device 100 and the target printer.

In S114, the CPU 132 sends a GET command including the OID of the information specified in the acquisition operation to the target printer. When receiving a GET command from the terminal device 100, the target printer acquires the MIB value associated with the OID included in the GET command from the target management table. Then, the CPU 132 transmits a response command including the acquired MIB value to the terminal device 100.

In S116, the CPU 132 receives a response command from the target printer. Further, the CPU 132 causes the display unit 114 to display information in the response command. This allows the user to know the settings within the target printer. Upon completion of S116, the CPU 132 ends the process of FIG.

(Specific case)
Next, with reference to FIGS. 6 and 7, specific cases B to E realized by the processes shown in FIGS. 4 and 5 will be described.

(Case B; Figure 6)
With reference to FIG. 6, case B in which write processing according to HTTPS is executed will be described. The initial state of case B is the state after case A1 in FIG. That is, the memory 134 of the terminal device 100 stores first ability information, second ability information, and an authority table 140. Further, SNMP of the printer 10A is enabled, and SNMP and HTTPS of the printer 10B are enabled.

When the terminal device 100 receives a printer selection operation to select the printer 10B from the user at T210 (YES at S10 in FIG. 4), the terminal device 100 selects HTTPS, which has the highest security level among the SNMP and HTTPS supported by the printer 10B. is determined as the protocol to be used (S12), and it is determined that the protocol to be used is HTTPS (NO in S14).

The terminal device 100 receives a setting operation from the user at T212 (YES at S60 in FIG. 5). The setting operation in this case includes the operation of specifying the information to be written "IP address" and the operation of specifying the changed character string "192.168.2.2" for "IP address". . In this case, the terminal device 100 determines that the administrator authority associated with the OID corresponding to the information "IP address" to be written is "ON" in the authority table 140 (YES in S70), and T214 In this step, the first input field is displayed (S72). When the terminal device 100 receives the input of the administrator authentication information AI1 into the first input field at T216, the terminal device 100 transmits an HTTPS command to the printer 10B at T220 (S90). The terminal device 100 writes the administrator authentication information AI1 and the OID corresponding to the information "IP address" to be written into the HTTPS command.

When the printer 10B receives the HTTPS command from the terminal device 100 at T220, it determines that the command includes an OID ending in "4", and the administrator authority associated with the OID ending in "4" is set to "ON". It is determined that Next, the terminal device 100 determines that the administrator authentication has been successful because the administrator authentication information AI1 in the authentication table 40 and the administrator authentication information AI1 in the HTTPS command match. Next, the terminal device 100 transmits a response command including the information “OK” to the terminal device 100 at T222.

When the terminal device 100 receives the response command including the information "OK" from the printer 10B at T222 (YES at S92), it exchanges the encryption key with the printer 10B at T230 (S94), and at T232, the terminal device 100 exchanges the encryption key with the printer 10B at T212. A POST command 200 corresponding to the setting operation is transmitted to the printer 10B (S96). The terminal device 100 writes the OID corresponding to the information "IP address" into the POST command 200. Further, the terminal device 100 writes the character string “192.168.2.2” specified in the setting operation of T212 to the POST command 200 as an MIB value.

When the printer 10B receives the POST command 200 from the terminal device 100 at T232, the printer 10B determines that the command includes an OID ending in "4", and in T240, the command is associated with the OID ending in "4" and The MIB value "192.168.2.2" is written to the second management table 38B. Next, at T242, the printer 10B transmits a response command 210 to the terminal device 100, which includes the same OID as the OID ending in "4" of the POST command 200, and status information "success".

The terminal device 100 receives the response command 210 from the printer 10B at T242 (S98). This completes the write process.

(Case C; Figure 6)
Next, with reference to FIG. 6, case C in which writing processing according to HTTPS is executed will be described. The initial state of case C is similar to the initial state of case B.

T310 is similar to T210 in case B. The terminal device 100 receives a setting operation from the user at T312 (YES at S60 in FIG. 5). The setting operation in this case includes an operation of specifying the information "Proxy" to be written, and an operation of specifying the changed character string "OFF" for the "Proxy setting". In this case, the terminal device 100 determines that the administrator authority associated with the OID corresponding to the write target information "Proxy settings" is "OFF" in the authority table 140 (NO in S70), and T314 In this step, a second input field is displayed (S80). When the terminal device 100 accepts the input of the general authentication information AI2 into the second input field at T316 (YES at S82), the terminal device 100 transmits an HTTPS command to the printer 10B at T320 (S90). The terminal device 100 writes the general authentication information AI2 and the OID corresponding to the information "Proxy settings" to be written into the HTTPS command.

At T320, upon receiving the HTTPS command from the terminal device 100, the printer 10B determines that the command includes an OID ending in "5", and sets the administrator authority associated with the OID ending in "5" to "OFF". It is determined that Next, the terminal device 100 determines that the general authentication has been successful because the general authentication information AI2 in the authentication table 40 and the general authentication information AI2 in the HTTPS command match. T322 and T330 are similar to T222 and T230 in case B, respectively.

At T332, the terminal device 100 transmits the POST command 220 according to the setting operation at T312 to the printer 10B (S96). The terminal device 100 writes the OID corresponding to the information “Proxy settings” into the POST command 220. Furthermore, the terminal device 100 writes the character string "OFF" specified in the setting operation of T312 to the POST command 220 as an MIB value.

When the printer 10B receives the POST command 220 from the terminal device 100 in T332, it determines that the command includes an OID ending in "5", and in T340, it associates the OID with the ending "5" in the command. Write the MIB value "OFF" to the second management table 38B. Next, in T342, the printer 10B transmits a response command 230 to the terminal device 100, which includes the same OID as the OID ending in "5" of the POST command 220, and status information "success".

The terminal device 100 receives the response command 230 from the printer 10B at T342 (S98). This completes the write process.

(Effects of case B and case C)
As shown in case B, the terminal device 100 has a first input field for inputting the authentication information of the administrator of the printer 10B when an OID associated with the administrator authority "ON" is specified. Display. On the other hand, as shown in case C, when the OID associated with the administrator authority "OFF" is specified, the terminal device 100 uses the authentication information of the administrator of the printer 10B or the authentication information of the general user of the printer 10B. A second input field is displayed for entering information. According to such a configuration, it is possible to input authentication information according to the security level of information stored in the printer 10B. Therefore, the security level can be increased, and user convenience can be improved.

(Case D; Figure 7)
With reference to FIG. 7, case D in which write processing according to SNMP is executed will be described. The initial state of case D is similar to the initial state of case B in FIG.

When the terminal device 100 receives a printer selection operation to select the printer 10A from the user at T410 (YES at S10 in FIG. 4), the terminal device 100 determines SNMP supported by the printer 10A as the protocol to be used (S12), and uses the printer 10A. It is determined that the protocol is SNMP (YES in S14). The terminal device 100 receives a setting operation from the user at T412 (YES at S20). The setting operation in this case includes the operation of specifying the information to be written, "IP address", and the operation of specifying the changed character string "192.168.2.1" for "IP address". . In this case, at T420, the terminal device 100 transmits the SET command 300 corresponding to the setting operation at T412 to the printer 10A (S22). The terminal device 100 identifies the OID ending in "4" from the information "IP address" specified in the setting operation of T412, and writes the information to the SET command 300. Further, the terminal device 100 writes the character string “192.168.2.1” specified in the setting operation of T412 to the SET command 300 as the MIB value.

When the printer 10A receives the SET command 300 from the terminal device 100 at T420, the printer 10A determines that the command includes an OID ending with "4", and at T430, the printer 10A stores the OID ending in "4" in the first management table 38A. In association with this, the MIB value "192.168.2.1" in the command is written. Next, at T432, the printer 10A transmits a response command 310 to the terminal device 100, which includes the same OID as the OID ending in "4" of the SET command 300, and status information "success".

The terminal device 100 receives the response command 310 from the printer 10A at T432 (S24). This completes the write process.

(Case E; Figure 7)
Next, with reference to FIG. 7, case E in which acquisition processing according to SNMP is executed will be described. The initial state of case E is similar to the initial state of case B in FIG.

T510 is similar to T410 in case D. The terminal device 100 receives an acquisition operation from the user at T512 (NO at S20 in FIG. 4). The acquisition operation in this case includes an operation for specifying the information "remaining amount of consumables" to be acquired. At T514, the terminal device 100 transmits a GET command 320 corresponding to the acquisition operation at T512 to the printer 10A (S30). The terminal device 100 specifies the OID ending in “2” from the information “remaining amount of consumables” specified in the acquisition operation of T512, and writes the information to the GET command 320.

When the printer 10A receives the GET command 320 from the terminal device 100 at T514, the printer 10A determines that the GET command 320 includes an OID ending in "2", and determines that it is associated with the OID ending in "2" in the first management table 38A. The MIB value "80" that has been specified is specified, and a response command 330 including the specified MIB value "80" is transmitted to the terminal device 100 at T516.

Upon receiving the response command 330 from the printer 10A at T516, the terminal device 100 displays the MIB value "80" in the response command 330 at T518 (S32). This completes the acquisition process.

(Effects of cases B to E)
Before explaining the effects of cases B to E, the processing executed by the terminal device 150 of the comparative example will be explained with reference to FIG. The terminal device 150 of the comparative example receives only the printer name of the printer in the search process. Furthermore, the terminal device 150 does not execute the protocol determination process of S12 in FIG. Therefore, even if the printer 10B that supports SNMP and HTTPS is selected as the target printer, the terminal device 150 can send a request command according to SNMP to the printer 10B.

The terminal device 150 accepts a printer selection operation to select the printer 10B at T610, and accepts a setting operation from the user at T620. The setting operation in this case includes the operation of specifying the information to be written "IP address" and the operation of specifying the changed character string "192.168.2.2" for "IP address". . In this case, the terminal device 150 transmits the SET command 400 according to SNMP to the printer 10B at T622.

When the printer 10B receives the SET command 400 from the terminal device 150 at T622, it determines that the command includes an OID ending in "4", and in the second management table 38B, it determines that the command is associated with the OID ending in "4". It is determined that the administrator's authority is "ON". The printer 10B determines that the administrator authentication using the administrator authentication information AI1 is not successful, and does not write the MIB value "192.168.2.2" in the command to the second management table 38B. Next, the printer 10B transmits an ERROR command including the status information "error" to the terminal device 150 at T624. Further, when the printer 10B receives a SNMP-compliant GET command including an OID ending in "4" from the terminal device 150, it transmits an ERROR command including the status information "error" to the terminal device 150.

As described above, when the printer 10B receives a SET command according to SNMP from the terminal device 150 (T622 in FIG. 8), the printer 10B may not write the MIB value to the second management table 38B. On the other hand, the terminal device 100 of this embodiment transmits a POST command according to HTTPS to the printer 10B (T232 in FIG. 6). In this case, the printer 10B writes the MIB value included in the POST command to the second management table 38B (T240). Therefore, it is possible to reduce the possibility that the MIB value will not be written to the second management table 38B. Therefore, user convenience can be improved.

Furthermore, when a GET command according to SNMP is received from the terminal device 150, the printer 10B may not transmit the MIB value to the terminal device 150. On the other hand, the terminal device 100 of this embodiment transmits a GET command according to HTTPS to the printer 10B (S114 in FIG. 5). In this case, the printer 10B transmits the MIB value corresponding to the OID included in the GET command to the terminal device 100 (S116). Therefore, the possibility that the MIB value will not be transmitted to the terminal device 100 can be reduced. Therefore, user convenience can be improved.

(Effects of this example)
According to the above configuration, the terminal device 100 sends a SET command according to SNMP to the printer 10A that supports SNMP but does not support HTTPS, and A POST command according to HTTPS is sent to the printer 10B. Therefore, the terminal device 100 can send a configuration command (ie, a SET command or a POST command) to the printer 10 using an appropriate protocol.

Further, the terminal device 100 sends a GET command according to SNMP to the printer 10A that supports SNMP but does not support HTTPS, and sends a GET command according to SNMP to the printer 10B that supports SNMP and supports HTTPS. , a GET command according to HTTPS is sent. Therefore, the terminal device 100 can send an acquisition command (ie, a GET command) to the printer 10 using an appropriate protocol.

(correspondence)
The printer 10A and the printer 10B are examples of a "first communication device" and a "second communication device", respectively. The first capability information and the second capability information are examples of "first protocol information" and "first protocol information", respectively. SNMP and HTTPS are examples of the "first protocol" and "second protocol", respectively. The setting instructions obtained when the determination is YES in S20 of FIG. 4 and the setting instructions obtained when the determination is YES in S60 of FIG. This is an example of "setting instructions". The SET command and the POST command are examples of a "first setting command" and a "second setting command", respectively. The first management table 38A and the second management table 38B are examples of "first management information" and "second management information", respectively. The OID included in the SET command in S22 of FIG. 4 is an example of the "first OID." The MIB value included in the SET command in S22 of FIG. 4 is an example of a "first setting value." The OID included in the POST command in S96 of FIG. 5 is an example of a "second OID." The MIB value included in the POST command in S96 of FIG. 5 is an example of the "second setting value." A capability information request is an example of an "information request." Administrator authority is an example of "authority information." An HTTPS command that includes authentication information is an example of a "first authentication command" and a "second authentication command." OK information is an example of "success information". ON information is an example of "functional information". The message displayed on the printer selection screen at T140 in FIG. 3 is an example of "notification information."

T20 in FIG. 3 is an example of a process executed by the "first protocol information receiving section." T30 in FIG. 3 is an example of a process executed by the "second protocol information receiving section." S22 in FIG. 4 is an example of a process executed by the "first setting command transmitter". S96 in FIG. 5 is an example of a process executed by the "second setting command transmitter".

The acquisition instruction acquired when the determination is NO in S20 of FIG. 4 and the acquisition instruction acquired when the determination is NO in S60 of FIG. 5 are respectively "first acquisition instruction" and "second acquisition instruction". This is an example of "Acquisition instruction". A GET command according to SNMP and a GET command according to HTTPS are examples of a "first acquisition command" and a "second acquisition command," respectively. The response command at S32 in FIG. 4 and the response command at S116 in FIG. 5 are examples of a "first response command" and a "second response command," respectively. The OID included in the GET command in S30 of FIG. 4 is an example of the "third OID." The MIB value included in the response command in S20 in FIG. 4 is an example of the "third setting value." The OID included in the GET command in S114 of FIG. 5 is an example of the "fourth OID." The MIB value included in the response command in S116 in FIG. 5 is an example of the "fourth setting value."

T20 in FIG. 3 is an example of a process executed by the "first protocol information receiving section." T30 in FIG. 3 is an example of a process executed by the "second protocol information receiving section." S30 in FIG. 4 is an example of a process executed by the "first acquisition command transmitter". 32 in FIG. 4 is an example of a process executed by the "first response command receiving section." S114 in FIG. 5 is an example of a process executed by the "second acquisition command transmitter". S116 in FIG. 5 is an example of a process executed by the "second response command receiving section."

Although specific examples of the present invention have been described in detail above, these are merely illustrative and do not limit the scope of the claims. The techniques described in the claims include various modifications and changes to the specific examples illustrated above. Modifications of the above embodiment are listed below.

(First Modification) The "first protocol" and the "second protocol" may be PJL (abbreviation for Printer Job Language) that does not use an encryption method and PJL that uses an encryption method, respectively.

(Second Modification) The printer 10 may be configured to transmit capability information periodically, or may be configured to transmit capability information when the power of the printer 10 is turned on. good. In this modification, the "information request transmitter" can be omitted.

(Third Modification) In S12 of FIG. 3, the terminal device 100 transmits a signal requesting transmission of information indicating whether or not the target printer supports SNMP, and then the terminal device 100 transmits a signal requesting transmission of information indicating whether or not the target printer supports SNMP. A signal may be transmitted requesting transmission of information indicating whether or not the

(Fourth Modification) The second management table 38B of the printer 10B may not include administrator authority. In this case, the printer 10B only needs to store one of the administrator authentication information AI1 and the general authentication information AI2. In this modification, S70 in FIG. 5 can be omitted.

(Fifth modification) As shown in FIG. 9, first administrator authentication information AI1 (user ID "U1", password "P1") and general authentication information AI2 (user ID "public", password "public") and second administrator authentication information AI3 (user ID "U2", password "P2") may be stored in the authentication table 40. Furthermore, the content, OID, MIB value, first administrator authority, and second administrator authority may be stored in association with each other in the second management table 38B of the printer 10B. In this modification, the first administrator authority is "ON" indicating that administrator authentication using the first administrator authentication information AI1 is required, and "OFF" indicating that the administrator authentication is not required. Indicates one of the following. In addition, the second administrator authority has two settings: "ON" indicating that administrator authentication using the second administrator authentication information AI3 is required, and "OFF" indicating that the administrator authentication is not required. Indicates one of them. In this modification, the authority table 140 of the terminal device 100 stores contents, OIDs, first administrator authority, and second administrator authority in association with each other. In this modification, the CPU 132 determines in S70 of FIG. 5 whether the first administrator authority associated with the target OID is "ON" in the authority table 140. The CPU 132 causes the display unit 114 to display an input field for inputting the first administrator authentication information AI1 when the first administrator authority is "ON", and when the first administrator authority is "OFF". In this case, it is determined whether the second administrator authority associated with the target OID is "ON" in the authority table 140. The CPU 132 causes the display unit 114 to display an input field for inputting the second administrator authentication information AI3 when the second administrator authority is "ON," and when the second administrator authority is "OFF." In this case, the display unit 114 displays an input field for inputting the first administrator authentication information AI1, the second administrator authentication information AI3, or the general authentication information AI2.

(Sixth Modification) The authentication method for performing administrator authentication or general authentication is not limited to the HTTPS digest authentication method or basic authentication method. For example, an authentication method using SNMP (specifically, an SNMP SET command) may be used.

(Seventh Modification) At T140 in case A2 in FIG. You don't have to. In another modification, the terminal device 100 may display a message on the printer selection screen at T140 to confirm whether or not to enable HTTPS for the printer 10B. In this modification, when accepting an operation to enable HTTPS, the terminal device 100 transmits a signal requesting to enable HTTPS to the printer 10B. In another modification, the terminal device 100 transmits a signal requesting to enable HTTPS to the printer 10B before T140, and sends a signal to the printer 10B to inform the user that HTTPS of the printer 10B has been enabled. The message may be displayed on the printer selection screen.

(Eighth Modification) mDNS (abbreviation for multicast Domain Name System) or the like may be used for capability information requests and communication of capability information in the search process.

(Ninth Modification) The "first communication device" and the "second communication device" are not limited to printers, but may be other devices such as a scanner, facsimile, PC, or server.

(Tenth Modification) In the above embodiment, the CPU 132 executes the programs 136 and 138, thereby realizing the processes shown in FIGS. 3 to 8. Alternatively, any of the processes may be realized by hardware such as a logic circuit.

Further, the technical elements described in this specification or the drawings exhibit technical usefulness singly or in various combinations, and are not limited to the combinations described in the claims as filed. Furthermore, the techniques illustrated in this specification or the drawings simultaneously achieve multiple objectives, and achieving one of the objectives has technical utility in itself.

Even if each claim is dependent on only some of the claims in the scope of claims as of the filing of this patent application, each claim can be dependent on only some of the claims. Not limited. To the extent not technically inconsistent, each claim may be dependent on other claims to which it was not dependent as filed. That is, the techniques of each claim can be combined in various ways as follows.
(Item 1)
A computer program for a terminal device,
The computer program causes the computer of the terminal device to run the following parts, namely:
a first protocol information receiving unit that receives first protocol information from a first communication device, the first protocol information being configured such that the first communication device supports a first protocol; the first protocol information receiving unit indicating that the second protocol is not supported;
a second protocol information receiving unit that receives second protocol information from a second communication device different from the first communication device, the second protocol information being transmitted by the second communication device to the second communication device; the second protocol information receiving unit indicating that it supports the first protocol and also supports the second protocol;
When the first protocol information is received from the first communication device and a first configuration instruction for transmitting a configuration command to the first communication device is obtained, the first protocol a first setting command transmitter configured to transmit a first setting command to the first communication device according to the first OID of MIB (Management Information Base); (abbreviation for Object ID) and a first setting value, and the first setting command sets the first setting value to the first setting value of the first communication device in association with the first OID. the first setting command transmitter, which is a command requesting writing to the management information of;
When the second protocol information is received from the second communication device and a second configuration instruction for transmitting a configuration command to the second communication device is obtained, the second protocol a second setting command transmitter configured to send a second setting command to the second communication device according to the second setting command, wherein the second setting command includes a second OID of the MIB and a second setting command; and the second setting command is a command requesting to write the second setting value in the second management information of the second communication device in association with the second OID. , the second setting command transmitter;
A computer program that functions as
(Item 2)
The computer program further causes the computer to
functioning as an information request transmitting unit that transmits an information request requesting transmission of protocol information to the first communication device and the second communication device;
The first protocol information receiving unit receives the first protocol information from the first communication device in response to the information request being sent to the first communication device,
Item 1, wherein the second protocol information receiving unit receives the second protocol information from the second communication device in response to the information request being sent to the second communication device. computer program.
(Item 3)
The terminal device is
A display section;
A memory that stores, in association with each of the plurality of OIDs of the MIB, the OID and authority information indicating whether administrator authentication is required;
The computer program further causes the computer to
the second protocol information is received from the second communication device, the second configuration instruction is obtained, and the authority information is associated with the second OID in the memory; a first display control unit that causes the display unit to display a first input field for inputting authentication information of an administrator of the second communication device when indicating that the administrator authentication is required; ,
a first authentication command transmitter that transmits a first authentication command including the first authentication information to the second communication device when the first authentication information is input into the first input field; ,
the second protocol information is received from the second communication device, the second configuration instruction is obtained, and the authority information is associated with the second OID in the memory; A second input field for displaying on the display section a second input field for inputting authentication information of the administrator or authentication information of a general user of the second communication device when indicating that the administrator authentication is not required; 2 display control unit;
a second authentication command transmitter that transmits a second authentication command including the second authentication information to the second communication device when the second authentication information is input in the second input field; ,
function as
The second setting command transmitter is configured to send the second setting command when success information indicating that the first authentication information or the second authentication information has been successfully authenticated is received from the second communication device. 3. The computer program according to item 1 or 2, wherein the computer program transmits a setting command of No. 2 to the second communication device.
(Item 4)
The second protocol is HTTPS (abbreviation for Hyper Text Transfer Protocol Secure),
Item 3, wherein the second communication device performs authentication according to the HTTPS digest authentication method or basic authentication method when receiving the first authentication command or the second authentication command. computer program.
(Item 5)
The terminal device includes a display unit,
The second protocol information includes functional information indicating whether the second protocol is enabled or disabled,
The computer program further causes the computer to
when the second protocol information is received from the second communication device and the function information included in the second protocol information indicates that the second protocol is disabled; 5. The computer program according to any one of items 1 to 4, which functions as a third display control section that causes the display section to display notification information urging activation of the second protocol.
(Item 6)
The first protocol information receiving unit receives the first protocol information from the first communication device using the first protocol,
The computer according to any one of items 1 to 5, wherein the second protocol information receiving unit receives the second protocol information from the second communication device using the first protocol. program.
(Item 7)
The computer program further causes the computer to
When the first protocol information is received from the first communication device and a first acquisition instruction for transmitting an acquisition command to the first communication device is acquired, the first protocol a first acquisition command transmitter configured to transmit a first acquisition command according to the first communication device to the first communication device, the first acquisition command including a third OID of the MIB; The acquisition command is a command requesting transmission of a third setting value associated with the third OID in the first management information of the first communication device. Department and
a first response command reception that receives a first response command including the third set value from the first communication device when the first acquisition command is sent to the first communication device; Department and
When the second protocol information is received from the second communication device and a second acquisition instruction for transmitting an acquisition command to the second communication device is acquired, the second protocol a second acquisition command transmitter configured to transmit a second acquisition command to the second communication device according to the second acquisition command, the second acquisition command including a fourth OID of the MIB; the acquisition command is a command requesting transmission of a fourth setting value associated with the fourth OID in the second management information;
a second response command reception that receives a second response command including the fourth set value from the second communication device when the second acquisition command is sent to the second communication device; Department and
7. The computer program according to any one of items 1 to 6, which functions as a computer program as described in any one of items 1 to 6.
(Item 8)
A computer program for a terminal device,
The computer program causes the computer of the terminal device to run the following parts, namely:
a first protocol information receiving unit that receives first protocol information from a first communication device, the first protocol information being configured such that the first communication device supports a first protocol; the first protocol information receiving unit indicating that the second protocol is not supported;
a second protocol information receiving unit that receives second protocol information from a second communication device different from the first communication device, the second protocol information being transmitted by the second communication device to the second communication device; the second protocol information receiving unit indicating that it supports the first protocol and also supports the second protocol;
When the first protocol information is received from the first communication device and a first acquisition instruction for transmitting an acquisition command to the first communication device is acquired, the first protocol a first acquisition command transmitter configured to transmit a first acquisition command according to the first communication device to the first communication device, the first acquisition command including a third OID of the MIB; The acquisition command is a command requesting transmission of a third setting value associated with the third OID in the first management information of the first communication device, the first acquisition command transmitting unit and,
a first response command reception that receives a first response command including the third set value from the first communication device when the first acquisition command is sent to the first communication device; Department and
When the second protocol information is received from the second communication device and a second acquisition instruction for transmitting an acquisition command to the second communication device is acquired, the second protocol a second acquisition command transmitter configured to transmit a second acquisition command to the second communication device according to the second acquisition command, the second acquisition command including a fourth OID of the MIB; the acquisition command is a command requesting transmission of a fourth setting value associated with the fourth OID in the second management information;
a second response command reception that receives a second response command including the fourth set value from the second communication device when the second acquisition command is sent to the second communication device; Department and
A computer program that functions as
(Item 9)
The computer program further causes the computer to
functioning as an information request transmitting unit that transmits an information request requesting transmission of protocol information to the first communication device and the second communication device;
The first protocol information receiving unit receives the first protocol information from the first communication device in response to the information request being sent to the first communication device,
Item 8, wherein the second protocol information receiving unit receives the second protocol information from the second communication device in response to the information request being sent to the second communication device. computer program.
(Item 10)
The terminal device is
A display section;
A memory that stores, in association with each of the plurality of OIDs of the MIB, the OID and authority information indicating whether administrator authentication is required;
The computer program further causes the computer to
the second protocol information is received from the second communication device, the second acquisition instruction is acquired, and the authority information is associated with the fourth OID in the memory; a first display control unit that causes the display unit to display a first input field for inputting authentication information of an administrator of the second communication device when indicating that the administrator authentication is required; ,
a first authentication command transmitter that transmits a first authentication command including the first authentication information to the second communication device when the first authentication information is input into the first input field; ,
the second protocol information is received from the second communication device, the second acquisition instruction is acquired, and the authority information is associated with the fourth OID in the memory; A second input field for displaying on the display section a second input field for inputting authentication information of the administrator or authentication information of a general user of the second communication device when indicating that the administrator authentication is not required; 2 display control unit;
a second authentication command transmitter that transmits a second authentication command including the second authentication information to the second communication device when the second authentication information is input in the second input field; ,
function as
The second acquisition command transmitter is configured to transmit the second acquisition command when success information indicating that the first authentication information or the second authentication information has been successfully authenticated is received from the second communication device. 10. The computer program according to item 8 or 9, wherein the computer program transmits a second acquisition command to the second communication device.
(Item 11)
The second protocol is HTTPS (abbreviation for Hyper Text Transfer Protocol Secure),
Item 10, wherein the second communication device performs authentication according to the HTTPS digest authentication method or basic authentication method when receiving the first authentication command or the second authentication command. computer program.
(Item 12)
The terminal device includes a display unit,
The second protocol information includes functional information indicating whether the second protocol is enabled or disabled,
The computer program further causes the computer to
when the second protocol information is received from the second communication device and the function information included in the second protocol information indicates that the second protocol is disabled; The computer program according to any one of items 8 to 11, which causes the computer program to function as a third display control unit that causes the display unit to display notification information urging activation of the second protocol.
(Item 13)
The first protocol information receiving unit receives the first protocol information from the first communication device using the first protocol,
The computer according to any one of items 8 to 12, wherein the second protocol information receiving unit receives the second protocol information from the second communication device using the first protocol. program.
(Item 14)
The first protocol is SNMP (Simple Network Management Protocol),
14. The computer program according to any one of items 1 to 13, wherein the second protocol is HTTPS (abbreviation for Hyper Text Transfer Protocol Secure).

2: Communication system, 6: LAN, 10A: Printer, 10B: Printer, 34A: Nonvolatile memory, 34B: Nonvolatile memory, 36A: Volatile memory, 36B: Volatile memory, 38A: First management table, 38B: 2nd management table, 40: authentication table, 100: terminal device, 112: operation unit, 114: display unit, 116: communication I/F, 130: control unit, 132: CPU, 134: memory, 136: OS program, 138: Setting application, 140: Authority table, 150: Terminal device

Claims (16)

A computer program for a terminal device,
The computer program causes the computer of the terminal device to run the following parts, namely:
a first protocol information receiving unit that receives first protocol information from a first communication device, the first protocol information being configured such that the first communication device supports a first protocol; the first protocol information receiving unit indicating that the second protocol is not supported;
a second protocol information receiving unit that receives second protocol information from a second communication device different from the first communication device, the second protocol information being transmitted by the second communication device to the second communication device; the second protocol information receiving unit indicating that it supports the first protocol and also supports the second protocol;
When the first protocol information is received from the first communication device and a first configuration instruction for transmitting a configuration command to the first communication device is obtained, the first protocol a first setting command transmitter configured to transmit a first setting command to the first communication device according to the first OID of MIB (Management Information Base); (abbreviation for Object ID) and a first setting value, and the first setting command sets the first setting value to the first setting value of the first communication device in association with the first OID. the first setting command transmitter, which is a command requesting writing to the management information of;
When the second protocol information is received from the second communication device and a second configuration instruction for transmitting a configuration command to the second communication device is obtained, the second protocol a second setting command transmitter configured to send a second setting command to the second communication device according to the second setting command, wherein the second setting command includes a second OID of the MIB and a second setting command; and the second setting command is a command requesting to write the second setting value in the second management information of the second communication device in association with the second OID. , the second setting command transmitter;
A computer program that functions as The computer program further causes the computer to
functioning as an information request transmitting unit that transmits an information request requesting transmission of protocol information to the first communication device and the second communication device;
The first protocol information receiving unit receives the first protocol information from the first communication device in response to the information request being sent to the first communication device,
The second protocol information receiving unit receives the second protocol information from the second communication device in response to the information request being transmitted to the second communication device. The computer program described. The terminal device is
A display section;
A memory that stores, in association with each of the plurality of OIDs of the MIB, the OID and authority information indicating whether administrator authentication is required;
The computer program further causes the computer to
the second protocol information is received from the second communication device, the second configuration instruction is obtained, and the authority information is associated with the second OID in the memory; a first display control unit that causes the display unit to display a first input field for inputting authentication information of an administrator of the second communication device when indicating that the administrator authentication is required; ,
a first authentication command transmitter that transmits a first authentication command including the first authentication information to the second communication device when the first authentication information is input into the first input field; ,
the second protocol information is received from the second communication device, the second configuration instruction is obtained, and the authority information is associated with the second OID in the memory; A second input field for displaying on the display section a second input field for inputting authentication information of the administrator or authentication information of a general user of the second communication device when indicating that the administrator authentication is not required; 2 display control unit;
a second authentication command transmitter that transmits a second authentication command including the second authentication information to the second communication device when the second authentication information is input in the second input field; ,
function as
The second setting command transmitter is configured to send the second setting command when success information indicating that the first authentication information or the second authentication information has been successfully authenticated is received from the second communication device. 2. The computer program product according to claim 1, wherein the computer program product transmits a setting command of No. 2 to the second communication device. The second protocol is HTTPS (abbreviation for Hyper Text Transfer Protocol Secure),
4. The second communication device performs authentication according to the HTTPS digest authentication method or basic authentication method when receiving the first authentication command or the second authentication command. computer program. The terminal device includes a display unit,
The second protocol information includes functional information indicating whether the second protocol is enabled or disabled,
The computer program further causes the computer to
when the second protocol information is received from the second communication device and the function information included in the second protocol information indicates that the second protocol is disabled; The computer program according to claim 1, which functions as a third display control unit that causes the display unit to display notification information urging activation of the second protocol. The first protocol information receiving unit receives the first protocol information from the first communication device using the first protocol,
The computer program product according to claim 1, wherein the second protocol information receiving unit receives the second protocol information from the second communication device using the first protocol. The computer program further causes the computer to
When the first protocol information is received from the first communication device and a first acquisition instruction for transmitting an acquisition command to the first communication device is acquired, the first protocol a first acquisition command transmitter configured to transmit a first acquisition command according to the first communication device to the first communication device, the first acquisition command including a third OID of the MIB; The acquisition command is a command requesting transmission of a third setting value associated with the third OID in the first management information of the first communication device. Department and
a first response command reception that receives a first response command including the third set value from the first communication device when the first acquisition command is sent to the first communication device; Department and
When the second protocol information is received from the second communication device and a second acquisition instruction for transmitting an acquisition command to the second communication device is acquired, the second protocol a second acquisition command transmitter configured to transmit a second acquisition command to the second communication device according to the second acquisition command, the second acquisition command including a fourth OID of the MIB; the acquisition command is a command requesting transmission of a fourth setting value associated with the fourth OID in the second management information;
a second response command reception that receives a second response command including the fourth set value from the second communication device when the second acquisition command is sent to the second communication device; Department and
The computer program according to claim 1, which functions as a computer program. A computer program for a terminal device,
The computer program causes the computer of the terminal device to run the following parts, namely:
a first protocol information receiving unit that receives first protocol information from a first communication device, the first protocol information being configured such that the first communication device supports a first protocol; the first protocol information receiving unit indicating that the second protocol is not supported;
a second protocol information receiving unit that receives second protocol information from a second communication device different from the first communication device, the second protocol information being transmitted by the second communication device to the second communication device; the second protocol information receiving unit indicating that it supports the first protocol and also supports the second protocol;
When the first protocol information is received from the first communication device and a first acquisition instruction for transmitting an acquisition command to the first communication device is acquired, the first protocol a first acquisition command transmitter configured to transmit a first acquisition command according to the first communication device to the first communication device, the first acquisition command including a third OID of the MIB; The acquisition command is a command requesting transmission of a third setting value associated with the third OID in the first management information of the first communication device, the first acquisition command transmitting unit and,
a first response command reception that receives a first response command including the third set value from the first communication device when the first acquisition command is sent to the first communication device; Department and
When the second protocol information is received from the second communication device and a second acquisition instruction for transmitting an acquisition command to the second communication device is acquired, the second protocol a second acquisition command transmitter configured to transmit a second acquisition command to the second communication device according to the second acquisition command, the second acquisition command including a fourth OID of the MIB; the acquisition command is a command requesting transmission of a fourth setting value associated with the fourth OID in the second management information;
a second response command reception that receives a second response command including the fourth set value from the second communication device when the second acquisition command is sent to the second communication device; Department and
A computer program that functions as The computer program further causes the computer to
functioning as an information request transmitting unit that transmits an information request requesting transmission of protocol information to the first communication device and the second communication device;
The first protocol information receiving unit receives the first protocol information from the first communication device in response to the information request being sent to the first communication device,
9. The second protocol information receiving unit receives the second protocol information from the second communication device in response to the information request being sent to the second communication device. The computer program described. The terminal device is
A display section;
A memory that stores, in association with each of the plurality of OIDs of the MIB, the OID and authority information indicating whether administrator authentication is required;
The computer program further causes the computer to
the second protocol information is received from the second communication device, the second acquisition instruction is acquired, and the authority information is associated with the fourth OID in the memory; a first display control unit that causes the display unit to display a first input field for inputting authentication information of an administrator of the second communication device when indicating that the administrator authentication is required; ,
a first authentication command transmitter that transmits a first authentication command including the first authentication information to the second communication device when the first authentication information is input into the first input field; ,
the second protocol information is received from the second communication device, the second acquisition instruction is acquired, and the authority information is associated with the fourth OID in the memory; A second input field for displaying on the display section a second input field for inputting authentication information of the administrator or authentication information of a general user of the second communication device when indicating that the administrator authentication is not required; 2 display control unit;
a second authentication command transmitter that transmits a second authentication command including the second authentication information to the second communication device when the second authentication information is input in the second input field; ,
function as
The second acquisition command transmitter is configured to transmit the second acquisition command when success information indicating that the first authentication information or the second authentication information has been successfully authenticated is received from the second communication device. 9. The computer program product according to claim 8, wherein the computer program product transmits a second acquisition command to the second communication device. The second protocol is HTTPS (abbreviation for Hyper Text Transfer Protocol Secure),
11. The second communication device performs authentication according to the HTTPS digest authentication method or basic authentication method when receiving the first authentication command or the second authentication command. computer program. The terminal device includes a display unit,
The second protocol information includes functional information indicating whether the second protocol is enabled or disabled,
The computer program further causes the computer to
when the second protocol information is received from the second communication device and the function information included in the second protocol information indicates that the second protocol is disabled; 9. The computer program product according to claim 8, which functions as a third display control section that causes the display section to display notification information urging activation of the second protocol. The first protocol information receiving unit receives the first protocol information from the first communication device using the first protocol,
9. The computer program product according to claim 8, wherein the second protocol information receiving unit receives the second protocol information from the second communication device using the first protocol. The first protocol is SNMP (Simple Network Management Protocol),
The computer program according to any one of claims 1 to 13, wherein the second protocol is HTTPS (abbreviation for Hyper Text Transfer Protocol Secure). A terminal device,
a first protocol information receiving unit that receives first protocol information from a first communication device, the first protocol information being configured such that the first communication device supports a first protocol; the first protocol information receiving unit indicating that the second protocol is not supported;
a second protocol information receiving unit that receives second protocol information from a second communication device different from the first communication device, the second protocol information being transmitted by the second communication device to the second communication device; the second protocol information receiving unit indicating that it supports the first protocol and also supports the second protocol;
When the first protocol information is received from the first communication device and a first configuration instruction for transmitting a configuration command to the first communication device is obtained, the first protocol a first setting command transmitter configured to transmit a first setting command to the first communication device according to the first OID of MIB (Management Information Base); (abbreviation for Object ID) and a first setting value, and the first setting command sets the first setting value to the first setting value of the first communication device in association with the first OID. the first setting command transmitter, which is a command requesting writing to the management information of;
When the second protocol information is received from the second communication device and a second configuration instruction for transmitting a configuration command to the second communication device is obtained, the second protocol a second setting command transmitter configured to send a second setting command to the second communication device according to the second setting command, wherein the second setting command includes a second OID of the MIB and a second setting command; and the second setting command is a command requesting to write the second setting value in the second management information of the second communication device in association with the second OID. , the second setting command transmitter;
A terminal device comprising: A terminal device,
a first protocol information receiving unit that receives first protocol information from a first communication device, the first protocol information being configured such that the first communication device supports a first protocol; the first protocol information receiving unit indicating that the second protocol is not supported;
a second protocol information receiving unit that receives second protocol information from a second communication device different from the first communication device, the second protocol information being transmitted by the second communication device to the second communication device; the second protocol information receiving unit indicating that it supports the first protocol and also supports the second protocol;
When the first protocol information is received from the first communication device and a first acquisition instruction for transmitting an acquisition command to the first communication device is acquired, the first protocol a first acquisition command transmitter configured to transmit a first acquisition command according to the first communication device to the first communication device, the first acquisition command including a third OID of the MIB; The acquisition command is a command requesting transmission of a third setting value associated with the third OID in the first management information of the first communication device, the first acquisition command transmitting unit and,
a first response command reception that receives a first response command including the third set value from the first communication device when the first acquisition command is sent to the first communication device; Department and
When the second protocol information is received from the second communication device and a second acquisition instruction for transmitting an acquisition command to the second communication device is acquired, the second protocol a second acquisition command transmitter configured to transmit a second acquisition command to the second communication device according to the second acquisition command, the second acquisition command including a fourth OID of the MIB; the acquisition command is a command requesting transmission of a fourth setting value associated with the fourth OID in the second management information;
a second response command reception that receives a second response command including the fourth set value from the second communication device when the second acquisition command is sent to the second communication device; Department and
A terminal device comprising:

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