JP2011035504A - Mobile communication terminal - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent location information about a device to be a communication connection destination from being maintained while overwritten. <P>SOLUTION: A storage means 13 stores information for correlating an identifier and processing. A storage means 14 stores setting information including: a first identifier indicating first processing that establishes connection with a device connected to a network 40; and location information about the device to be a connection destination in the first processing. An execution means 15 uses information stored by the storage means 13, identifies processing corresponding to a message received by a receiving means 12 from among a plurality of processing, and executes it. An acquisition means 16 acquires a program including a first group of commands for correcting the location information stored by the storage means 14 as information before overwritten. A correction means 17 corrects the location information as information before overwritten by executing the first group of commands of the program acquired by the acquisition means 16. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a technique for controlling setting information in a mobile communication terminal.

  A technique for remotely controlling a mobile communication terminal from a network is known. Patent Document 1 discloses middleware that adds, deletes, and changes services according to metadata in a terminal such as a mobile phone. Patent Document 2 discloses a technique for transmitting a message including a unique identifier on a system when a message is transmitted from a device requesting processing in a distributed system having a device requesting processing and a device executing processing. Disclosure. Patent Document 3 discloses a technique in which a mail requesting activation of an application is sent from one communication terminal to another communication terminal, and the communication terminal that receives the mail activates the application.

Special table 2009-512058 JP-A-8-249261 Japanese Patent Laid-Open No. 2005-166011

  The present invention provides a technique for preventing location information of a device that is a communication connection destination from being rewritten and maintained in a mobile communication terminal that executes processing according to a message received via a network. .

According to the present invention, a communication means for communicating with a device connected to a network, a message including a first part in which an identifier is described and a second part in which data is described are received via the communication means. A first storage means for storing information corresponding to the means, the identifier and the process; a first identifier indicating a first process for establishing a connection with the device connected to the network; and The second storage unit that stores setting information including the location information of the device that is the connection destination in the processing, and the information stored in the first storage unit, the message received by the reception unit An execution unit for specifying and executing a process corresponding to the identifier described in the first part from a plurality of processes including the first process; and the location stored in the second storage unit Information rewritten Acquisition means for acquiring a program including a first instruction group for correcting the information before rewriting when the location information is rewritten, and when the location information is rewritten, the first of the programs acquired by the acquisition means A mobile communication terminal having correction means for correcting the location information to information before rewriting by executing one instruction group is provided.
According to this mobile communication terminal, even if the location information is rewritten, it is corrected autonomously by the program.

In a preferred aspect, the plurality of processes include a second process for rewriting information stored in the second storage unit or the first storage unit, and the first storage unit includes the second storage unit. The first character string is stored as a second identifier corresponding to the process of the above, the second identifier is described in the first part, and the second process is used as the data in the second part. When the reception unit receives the message describing the information indicating the second character string and the second character string, the execution unit stores the content of the second identifier in the first storage unit by the second process. You may rewrite to a 2nd character string.
According to this mobile communication terminal, the message for starting the process of rewriting the information stored in the second storage means or the first storage means can be restricted.

In another preferred aspect, the first storage means stores a third identifier as an identifier corresponding to the first process, and the first process is performed for the device indicated by the location information. Including a process of transmitting a response for establishing a connection via the communication means, and when the receiving means receives the message in which the third identifier is described in the first portion, the executing means includes: The response may be transmitted by the first process.
According to this mobile communication terminal, if a response is not returned even if a connection is requested, it can be determined that the location information has been rewritten.

In still another preferred aspect, after the response is transmitted, the execution unit establishes a connection via the communication unit with the device indicated by the location information in response to the response, and the acquisition The means may obtain the program by downloading from the device indicated by the location information through the connection.
According to this mobile communication terminal, rewriting of location information is monitored by a program acquired from a trusted device.

In still another preferred aspect, the second identifier is described in the first portion, and the information indicating the first processing and the third character string are described as the data in the second portion. When the receiving means receives the information, the execution means may rewrite the contents of the third identifier into the third character string in the first storage means by the second processing.
According to this mobile communication terminal, the message for starting the process of establishing a connection can be restricted.

In still another preferred aspect, the program includes a second instruction group for storing a history of rewriting and correcting the location information, and the receiving means transmits the history via the connection. When the request is received, and the receiving means receives the request, the second instruction group is executed to execute the second instruction group to the device indicated by the location information stored in the second storage means via the connection. And a transmission means for transmitting the history.
According to this mobile communication terminal, it is possible to obtain a history of confirmation of location information.

1 is a diagram illustrating a configuration of a communication system 1 according to an embodiment. 1 is a diagram illustrating a functional configuration of a communication system 1. FIG. 2 is a diagram showing a hardware configuration of a mobile phone 10. FIG. 2 is a diagram illustrating a hardware configuration of a CP server 20. FIG. 2 is a diagram illustrating a hardware configuration of a DM server 30. FIG. 3 is a sequence chart showing the operation of the communication system 1. It is a figure which illustrates the data structure of CP message. It is a figure which shows the information which shows the conditions by which SMS is processed as CP message. It is a figure which illustrates the information which matches a registry key and a process. It is a figure which illustrates the contents of the registry after rewriting. It is a figure which illustrates the setting information of DM session. It is a figure which illustrates a history.

1. Configuration FIG. 1 is a diagram showing a configuration of a communication system 1 according to an embodiment of the present invention. In this example, the communication system 1 is a system that conforms to the specification of remote terminal setting of OMA (Open Mobile Alliance). The communication system 1 includes a mobile phone 10, a CP (Client Provisioning) server 20, and a DM (Device Management) server 30. CP server 20 and DM server 30 are connected to mobile phone 10 via network 40.

  FIG. 2 is a diagram illustrating a functional configuration of the communication system 1. In the mobile phone 10, the communication unit 11 communicates with a device connected to the network 40. The receiving unit 12 receives a message including a first part (header in the following example) in which an identifier is described and a second part (in the following example, a body) in which data is described via the communication unit 11. To do. In this example, the message is transmitted by the transmission means 21 of the CP server 20. The storage unit 13 stores information that associates an identifier with a process. The storage unit 14 includes a first identifier indicating a first process for establishing a connection with a device connected to the network 40, and a location of a device (DM server 30 in this example) that is a connection destination in the first process. And setting information including information. The execution unit 15 uses the information stored in the storage unit 13 to perform a process corresponding to the identifier described in the header of the message received by the reception unit 12 from among a plurality of processes including the first process. Identify and execute. The acquisition unit 16 acquires a program including a first instruction group for correcting the location information stored in the storage unit 14 to the information before rewriting when the location information is rewritten. When the location information is rewritten, the correcting unit 17 executes the first instruction group of the program acquired by the acquiring unit 16 to correct the location information to the information before the rewriting.

  In this example, the plurality of processes described above includes a second process for rewriting the information stored in the storage unit 13 or the storage unit 14. The storage means 13 stores the first character string as a second identifier corresponding to the second process. When the receiving unit 12 receives the message in which the second identifier is described in the header and the information indicating the second process and the second character string are described as data in the body, the execution unit 15 performs the second process. In the storage means 13, the content of the second identifier is rewritten to the second character string.

  In this example, the storage unit 13 stores a third identifier as an identifier corresponding to the first process. The first process includes a process of transmitting a response for establishing a connection to the device indicated by the location information via the communication unit 11. When the receiving unit 12 receives the message in which the third identifier is described in the header, the executing unit 15 transmits a response through the first process. In this example, in the DM server 30, the communication unit 31 performs communication via the network 40.

  In this example, after the response is transmitted, the execution unit 15 establishes a connection via the communication unit 11 with the device indicated by the location information in response to the response. The acquisition unit 16 acquires a program by downloading from a device indicated by the location information through a connection.

  In this example, the program includes a second instruction group for storing a history of rewriting and correcting location information. The receiving unit 12 receives a history transmission request via the connection. When the receiving unit 12 receives the request, the transmitting unit 18 executes the second command group to transmit the history to the device indicated by the location information stored in the storage unit 14 via the connection. .

  FIG. 3 is a diagram illustrating a hardware configuration of the mobile phone 10. The mobile phone 10 is an example of a mobile communication terminal. A CPU (Central Processing Unit) 101 (an example of a reception unit 12, an execution unit 15, an acquisition unit 16, a correction unit 17, and a transmission unit 18) is a control device that controls each component of the mobile phone 10. A ROM (Read Only Memory) 102 is a storage device that stores programs and data necessary for the basic operation of the mobile phone 10. The ROM 102 stores, for example, an OS (Operating System) program. The OS program is a program for realizing input / output of data, access to a storage device, execution of various programs, voice communication, data communication, and other basic functions of the mobile phone 10.

  A RAM (Random Access Memory) 103 is a storage device that functions as a work area when the CPU 101 executes a program. The storage unit 104 stores application programs and data. The storage unit 104 (an example of the storage unit 13 and the storage unit 14) includes a nonvolatile memory such as a flash memory. The operation unit 105 outputs a signal corresponding to a user operation. The operation unit 105 includes an input device such as a keypad including a numeric keypad, a call key, an end key, a clear key, a cursor key, a power key, and other keys for performing input. The user inputs an instruction to the mobile phone 10 by operating the keypad. The display unit 106 displays characters and images. The display unit 106 includes a display device such as a liquid crystal display. The display unit 106 displays information processed by the application program being executed. The display unit 106 includes a display body such as an LCD (liquid crystal display) and a drive circuit that drives the display body. The communication unit 107 (an example of the communication unit 11) performs voice communication or data communication via a radio base station via an antenna. The bus 109 is a transmission path for transmitting signals and data exchanged between components. The above components are connected via a bus 109.

  In this example, the storage unit 104 stores a program for causing the mobile phone 10 to function as a CP client and a program for causing the mobile phone 10 to function as a DM client. When the CPU 101 executes these programs, the functions shown in FIG. In the following description, software such as a CP client and a DM client may be described as a processing target. This is because the CPU 101 executing a program for functioning as a CP client is used for the RAM 103, the storage unit 104, and the like. This means that processing is performed in cooperation with hardware elements.

  FIG. 4 is a diagram illustrating a hardware configuration of the CP server 20. The CP server 20 is a server that transmits a CP message according to the OMA CP specification. The CPU 201 is a control device that controls each component of the CP server 20. The ROM 202 is a storage device that stores programs and data necessary for the basic operation of the CP server 20. The RAM 203 is a storage device that functions as a work area when the CPU 201 executes a program. The storage unit 204 stores an OS program, application programs, and data. In this example, the storage unit 204 stores a program for causing it to function as a CP server. The storage unit 204 includes a storage device such as an HDD (Hard Disk Drive). The operation unit 205 outputs a signal corresponding to a user operation. The operation unit 205 includes input devices such as a keyboard and a mouse. The user inputs an instruction to the CP server 20 by operating the keyboard. The display unit 206 displays characters and images. The display unit 206 includes a display device such as a liquid crystal display. The communication unit 207 performs communication via the network 40. The bus 209 is a transmission path for transmitting signals and data exchanged between components. The above components are connected via a bus 209. When the CPU 201 executes the program stored in the storage unit 204, the CP server 20 functions as a server that transmits a CP message according to the specification of OMA CP.

  FIG. 5 is a diagram illustrating a hardware configuration of the DM server 30. The DM server 30 is a server that performs communication according to the specification of OMA DM. The CPU 301 is a control device that controls each component of the DM server 30. The ROM 302 is a storage device that stores programs and data necessary for basic operations of the DM server 30. A RAM 303 is a storage device that functions as a work area when the CPU 301 executes a program. The storage unit 304 stores OS programs, application programs, and data. In this example, the storage unit 204 stores a program for causing it to function as a DM server. The storage unit 304 includes a storage device such as an HDD. The operation unit 305 outputs a signal corresponding to a user operation. The operation unit 305 has an input device such as a keyboard and a mouse. The user inputs an instruction to the DM server 30 by operating the keyboard. The display unit 306 displays characters and images. The display unit 306 includes a display device such as a liquid crystal display. The communication unit 307 performs communication via the network 40. The bus 309 is a transmission path for transmitting signals and data exchanged between components. The above components are connected via a bus 309. When the CPU 301 executes the program stored in the storage unit 304, the DM server 30 functions as a server that performs communication in accordance with the OMA DM specification.

2. Operation FIG. 6 is a sequence chart showing the operation of the communication system 1. Here, a case where the company distributes the mobile phone 10 to employees and the employees use the distributed mobile phone 10 will be described as an example. This company manages the CP server 20 and the DM server 30. First, before distributing the mobile phone 10 to employees, the CP server 20 transmits a CP message to the mobile phone 10 (step S100). Here, the CP message is a message for executing processing for rewriting the setting in the mobile phone 10. In this example, the CP message is transmitted as a message according to the SMS (Short Message Service) standard (for simplicity, a message transmitted / received according to the SMS standard is simply referred to as “SMS”).

  FIG. 7 is a diagram illustrating a data structure of the CP message. In this example, the CP message includes an SMS header, a WDP (Wireless Datagram Protocol) header, a WSP (Wireless Session Protocol) header, and a body (data). The SMS header, WDP header, and WSP header are areas for describing information according to the SMS, WDP, and WSP protocols, respectively. In this example, a character string “Content Type =“ application / vnd.wap.connectivity-wbxml ”” is described in the WSP header. Here, the content of the parameter “Content Type” (in this example, “application / vnd.wap.connectivity-wbxml”) is an identifier that identifies the process to be executed when the mobile phone 10 receives the CP message (second It is used as an example of an identifier.

  FIG. 8 is a diagram illustrating information indicating a condition under which SMS is processed as a CP message. In this example, this information is stored in the registry. The registry is a database that records OS, device drivers, applications, other software, and hardware setting information of the mobile phone 10. The registry is stored in the storage unit 104. In the registry, identifiers called “registry keys” and “values” have a tree structure. The content of the registry value is called "data". Note that the terms “value” and “data” in the registry are used in a different meaning from the other cases. In the example of FIG. 8, the value “Content Type” is included below the registry key “CP”, and the content of “Content Type” is “application / vnd.wap.connectivity-wbxml”. This is because when the mobile phone 10 receives a CP message, that is, when an SMS including a WSP header in which “application / vnd.wap.connectivity-wbxml” is described as the content of “Content Type” is received, It shows that the process corresponding to “CP” is executed.

  FIG. 9 is a diagram illustrating information associating registry keys with processes. The process corresponding to the registry key “CP” is a process as a CP client, that is, a process of rewriting the contents of the registry based on information described in the body of the CP (an example of a second process). The process corresponding to the registry key “DM” is a process as a DM client, that is, a process for establishing a session with the DM server (an example of a first process). The information of FIG. 9 is also stored in the registry. For example, the registry key and value to be rewritten include information specifying “Content Type” of “CP”, and information indicating the character string “aaaa / bbbb.connectivity-wbxml” as the content of rewriting in the body. When the mobile phone 10 receives the described CP message, the CP client rewrites the content of the value “Content Type” of the registry key “CP” to “aaaa / bbbb.connectivity-wbxml”.

  When such rewriting is performed, when the mobile phone 10 receives the SMS including the WSP header in which “application / vnd.wap.connectivity-wbxml” is previously described as the content of “Content Type”, the CP client However, after rewriting, an SMS including a WSP header in which “application / vnd.wap.connectivity-wbxml” is written as the content of “Content Type” is not processed as a CP message. After rewriting, the SMS including the WSP header in which “aaaa / bbbb.connectivity-wbxml” is described is processed as a CP message.

  As described above, the rewriting of the registry by the CP message enables the rewriting of the setting of the mobile phone 10 by remote operation, but there is a possibility that a disadvantage is caused by the rewriting of the setting. For example, when the specification of the CP message is disclosed, there is a possibility that a malicious person can rewrite the setting of the mobile phone 10 to be inconvenient for the user. It is assumed that the rewriting of the registry is based on a CP message, a malicious (or buggy) application program, or a manual (or wrong) manual operation by the user. In this embodiment, in order to prevent the registry from being rewritten (or maintained in a rewritten state) such as an attack by a malicious message from a CP message, a process as a CP client is executed. The contents of the registry are rewritten in advance to be private.

  Refer to FIG. 6 again. The CP message transmitted in step S100 is a CP message for rewriting the contents of the registry for executing processing as a CP client. That is, the CP message is an SMS including a WSP header in which “application / vnd.wap.connectivity-wbxml” is described as the content of “Content Type” and a body in which the content of rewriting is described. The rewriting content indicates the registry key to be rewritten and the information specifying the “Content Type” of “CP” as the value, and the character string “xxx / yyy.connectivity-wbxml” as the rewriting content Contains information.

  Upon reception of the CP message in step S100, the CP client of the mobile phone 10 rewrites the content of the value “Content Type” of the registry key “CP” to “xxx / yyy.connectivity-wbxml” in the registry (step S101).

  FIG. 10 is a diagram illustrating the contents of the registry after rewriting. If the CP server 20 (the administrator) makes the contents of the rewriting private, a server other than the CP server 20 cannot transmit a CP message to the mobile phone 10. A malicious person operates a server (not shown) to carry an SMS containing a WSP header with “application / vnd.wap.connectivity-wbxml” written as “Content Type” in accordance with the published specifications. Even if it is sent to the telephone 10, the CP client does not process this SMS as a CP message. Therefore, an attack from a malicious person can be prevented. After changing the setting of the CP client in this way, the cellular phone 10 is distributed to the employees.

  Refer to FIG. 6 again. In step S102, the CP server 20 transmits a CP message. This CP message is for rewriting the setting of the DM session (DM connection). In this example, DM session setting information is stored in the registry.

  FIG. 11 is a diagram illustrating DM session setting information. In this example, the value “server URL”, “server name”, “ID”, and “passwd” of the key “setting” of the registry key “DM” (an example of the first identifier) is “www.aaa. co.jp/server "," Company A server "," id99 ", and" pass01 "are shown. “Server URL” is information indicating the location of the DM server in the network 40. In this example, the URL of the DM server 30 is described. “Server name” indicates the name of the DM server. “ID” indicates a login ID to the DM server. “Passwd” indicates a login password to the DM server. In the mobile phone 10, the DM client establishes a DM session with the server according to the setting information stored in the registry.

  Refer to FIG. 6 again. The CP message transmitted in step S102 is a CP message for rewriting the DM session setting information as shown in FIG. That is, the CP message is an SMS including a WSP header in which “xxx / yyy.connectivity-wbxml” is described as the content of “Content Type”. Further, this CP message has a body in which information for rewriting the contents of the registry to those shown in FIG. 11 is described. The CP client rewrites the setting information in the registry according to the received CP message (step S103).

  In step S <b> 104, the DM server 30 transmits a DM notification (DM Notification) to the mobile phone 10. The DM notification is a message for starting establishment of a DM session. In this example, the DM notification is sent as SMS. Like the CP message, the fact that the SMS is a DM notification is specified by the content of “Content Type” described in the WSP header. The correspondence between the DM notification and the content of “Content Type” is stored in the registry as in the case of the CP message.

  When the mobile phone 10 receives the DM notification, the DM client transmits a response for establishing a DM session (step S105). This response is transmitted using HTTPS (Hypertext Transfer Protocol over Secure Socket Layer) as a protocol. The transmission destination of this response is specified with reference to the registry. That is, the DM client reads the URL of the server from the registry illustrated in FIG. 11, and transmits a response to the server (DM server 30 in this example) specified by the read URL. When this response is transmitted and received, the DM client and the DM server 30 establish a DM session according to a predetermined protocol. A DM session refers to a series of processes performed between a DM client and a DM server based on DM specifications.

  In step S107, the DM client downloads the monitoring program in accordance with an instruction from the DM server 30. When the setting information of the registry, particularly the DM session, is rewritten, the monitoring program includes a command group for correcting the rewritten setting to the correct content (that is, the content before rewriting). The monitoring program includes correct setting information as internal data. More specifically, the monitoring program includes an instruction group for performing the following processing. (A-1) Setting information is read from the registry at a certain cycle (for example, 9:00 and 21:00 every day). (A-2) The read setting information is compared with the setting information of the internal data. (A-3) If there is a difference between the two in the comparison, the contents of the registry are corrected to the correct contents.

  The monitoring program further includes a command group for recording a log (history) of setting information. More specifically, the monitoring program includes an instruction group for performing the following processing. (B-1) Information indicating the result of the determination in (A-2) (for example, “OK”, “URL mismatch”, “URL deletion”, “ID mismatch”, “passwd mismatch”, etc.) is determined. Record it as a history with the time. (B-2) When the correction is performed according to (A-3), information indicating the content of the correction (for example, “URL correction”, “ID correction”, “passwd correction”, “unrepairable”, etc.) Record as a log with the time the correction was made. In this example, the log is stored in the registry. A predetermined area (for example, determination results and correction results for the past x times) is allocated to the registry in advance to store logs.

  In step S108, the DM client installs a monitoring program in accordance with an instruction from the DM server 30. The storage unit 104 stores an installation program (installer) for installing an application program, and the monitoring program is installed when the CPU 101 executes the installer. Linkage between the DM client and the installer (linkage between software) is realized by an OS or a program for realizing a software link function.

  When the monitoring program is installed, the DM client starts the monitoring program. When activated, the monitoring program starts registry monitoring and correction and log recording (step S110).

  FIG. 12 is a diagram illustrating a history. In this example, the content of the server URL is deleted when it is checked at 9:00 on June 26, 2009, and it is recorded as a history that it was repaired at 9:01.

  Refer to FIG. 6 again. The DM server 30 transmits a log request to the mobile phone 10 according to the determined schedule or according to the operation of the administrator (step S111). Upon receiving the log request, the DM client transmits the log to the DM server 30 (step S112). When receiving the log, the DM server 30 confirms the contents of the log (step S113). In this example, log confirmation is automatically performed by the DM server program. The DM server program incorporates an algorithm for detecting a log abnormality. When it is found that there is an abnormality in the log (for example, when “unrepairable” is recorded in the log), the DM server 30 transmits a request for remote reset of the mobile phone 10 to the CP server 20 ( Step S114). This request includes information specifying the content of the process (in this example, remote reset) and the target of the process (in this example, the mobile phone 10).

  When receiving the request from the DM server 30, the CP server 20 transmits a CP message to the mobile phone 10 in response to the request (step S115). This CP message is a CP message for executing a process of resetting the setting of the mobile phone 10. Upon receiving this CP message, the CP client resets the setting of the mobile phone 10 (step S116). The reset process includes a process of initializing the contents of the registry and a process of deleting data such as a phone book, mail and images.

  As described above, according to the present embodiment, the setting information including the URL of the DM server is corrected autonomously by the monitoring program. Further, by rewriting the conditions for processing the SMS as a CP message to a private one, it is possible to limit the servers that can transmit the CP message (to those who know the private condition). That is, it is possible to prevent the contents of the registry of the mobile phone 10 from being rewritten by the SMS transmitted from the server that does not know the undisclosed conditions.

3. Other Embodiments The present invention is not limited to the above-described embodiments, and various modifications can be made. Hereinafter, some modifications will be described. Two or more of the following modifications may be used in combination.

3-1. Modification 1
In the above-described embodiment, an example has been described in which the server that can transmit the CP message is limited by changing the condition for processing the SMS as a CP message (content of “Content Type”) to a private one. This technique may be applied to the DM server. That is, the CP server 20 transmits a CP message for rewriting the condition for determining SMS as a DM notification. Upon receiving this CP message, the CP client rewrites the conditions for determining SMS as DM notification (content of “Content Type”, an example of the third identifier). After this rewriting, only a person who knows the conditions rewritten by the CP message (that is, a server sharing information with the CP server 20) can transmit a DM notification. In other words, a person who does not know the conditions rewritten by the CP message cannot transmit an unauthorized DM notification.

3-2. Modification 2
The response in step S105 in FIG. 6 and the log in step S112 are transmitted to the device specified by the URL of the DM server stored in the registry of the mobile phone 10, not the source of the DM notification or request. That is, for example, in a device that transmits a DM notification, if a response is not returned within a certain threshold time after the DM notification is transmitted, the contents of the registry of the mobile phone 10 may be rewritten. There is. Alternatively, if a response is not returned even if a DM notification is transmitted a predetermined number of times, the contents of the registry of the mobile phone 10 may be rewritten. In such a case, the DM server 30 may request the CP server 20 to remotely reset the mobile phone 10.

3-3. Modification 3
The processing in the mobile phone 10 is not necessarily performed according to the flow of FIG. 6 every time. For example, after the condition for processing SMS as a CP message is changed and the setting information of the DM server is correctly set, only the processing after step S104 may be performed. Further, when the monitoring program has already been installed, the processes of steps S107 and S108 may be omitted. Furthermore, the process when there is an abnormality in the log is not limited to the process of resetting the setting of the mobile phone 10. The administrator of the DM server 30 may manually confirm the setting of the mobile phone 10 without sending the request from the DM server 30 to the CP server 20 by omitting the processes of steps S114 to S116. Further, even when a request is sent from the DM server 30 to the CP server 20, the processing content is not limited to resetting the settings of the mobile phone 10. Processing for disabling the voice communication function and data communication function of the mobile phone 10, processing for prohibiting access to data stored in the storage unit 104, processing for locking the mobile phone 10 so as not to accept user operations May be executed instead of the reset process.

3-4. Modification 4
The hardware configurations of the mobile phone 10, the CP server 20, and the DM server 30 are not limited to those described in the embodiment. An apparatus having any hardware configuration may be used as long as the functions described in the embodiments and modifications can be realized. Further, in the embodiment, the example in which the CP server 20 and the DM server 30 are physically separate devices has been described. However, a physically single device has a function as the CP server 20 and a function as the DM server 30. You may have. Furthermore, the sharing of functions between software is not limited to that described in the embodiment. In the embodiment, the example in which the OS, the CP client, and the DM client share the functions and execute the processing has been described. However, a single software may have all the functions described in the embodiment. Alternatively, in the embodiment, a plurality of software may share what has been described as a plurality of functions of a certain software.

  In the embodiment, the registry, which is a single database, has functions as the storage unit 13 and the storage unit 14, but the storage contents of the storage unit 13 and the storage unit 14 are stored in different databases. It may be stored.

3-5. Modification 5
Details of the OS, message, and session protocol used in the mobile phone 10 are not limited to those described in the embodiment. For example, electronic mail may be used instead of SMS. In the embodiment, setting information, logs, and the like are stored in the registry, but may be stored in a database other than the registry. Further, the data structure of the database is not limited to the tree structure described in the embodiment. In the embodiment, the download, installation, and activation of the monitoring program are performed via the DM session (by the functions of the DM server and the DM client), but these processes may be performed manually. Alternatively, the monitoring program may be preinstalled before the mobile phone 10 is shipped.

DESCRIPTION OF SYMBOLS 1 ... Communication system, 10 ... Mobile telephone, 11 ... Communication means, 12 ... Reception means, 13 ... Storage means, 14 ... Storage means, 15 ... Execution means, 16 ... Acquisition means, 17 ... Correction means, 20 ... CP server, DESCRIPTION OF SYMBOLS 21 ... Transmission means, 30 ... DM server, 31 ... Communication means, 40 ... Network, 101 ... CPU, 102 ... ROM, 103 ... RAM, 104 ... Memory | storage part, 105 ... Operation part, 106 ... Display part, 107 ... Communication part , 109 ... bus, 201 ... CPU, 202 ... ROM, 203 ... RAM, 204 ... storage unit, 205 ... operation unit, 206 ... display unit, 207 ... communication unit, 209 ... bus, 301 ... CPU, 302 ... ROM, 303 ... RAM, 304 ... storage section, 305 ... operation section, 306 ... display section, 307 ... communication section, 309 ... bus

Claims (6)

A communication means for communicating with a device connected to the network;
Receiving means for receiving, via the communication means, a message including a first part in which an identifier is written and a second part in which data is written;
First storage means for storing information that associates an identifier with a process;
A second identifier for storing setting information including a first identifier indicating a first process for establishing a connection with a device connected to the network, and location information of a device that is a connection destination in the first process; Storage means;
Using the information stored in the first storage means, a process corresponding to the identifier described in the first part of the message received by the receiving means is a plurality of processes including the first process. Execution means to be identified and executed from
Obtaining means for obtaining a program including a first instruction group for correcting the location information stored in the second storage means to information before rewriting when the location information is rewritten;
A mobile communication unit comprising: correction means for correcting the location information to information before rewriting by executing the first instruction group of the program acquired by the acquisition means when the location information is rewritten. Terminal. The plurality of processes include a second process for rewriting information stored in the second storage unit or the first storage unit,
The first storage means stores a first character string as a second identifier corresponding to the second process;
When the receiving unit receives the message in which the second identifier is described in the first part and the information indicating the second processing and the second character string are described as the data in the second part 2. The mobile communication according to claim 1, wherein the execution unit rewrites the content of the second identifier into the second character string in the first storage unit by the second process. 3. Terminal. The first storage means stores a third identifier as an identifier corresponding to the first process;
The first process includes a process of transmitting a response for establishing a connection to the device indicated by the location information via the communication unit,
The said execution means transmits the said response by the said 1st process, when the said receiving means receives the message by which the said 3rd identifier was described in the said 1st part. Mobile communication terminals. After the response is transmitted, the execution means establishes a connection via the communication means with the device indicated by the location information in response to the response;
The mobile communication terminal according to claim 3, wherein the acquisition unit acquires the program by downloading from the device indicated by the location information through the connection. When the receiving means receives the message in which the second identifier is described in the first portion and the information indicating the first processing and the third character string are described as the data in the second portion. The mobile communication according to claim 3, wherein the execution means rewrites the content of the third identifier into the third character string in the first storage means by the second processing. Terminal. The program includes a second instruction group for storing a history of rewriting and correcting the location information,
The receiving means receives the request for transmission of the history via the connection;
When the receiving means receives the request, the history is transmitted to the device indicated by the location information stored in the second storage means by executing the second instruction group via the connection. The mobile communication terminal according to claim 4, further comprising transmission means for transmitting.

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