JP2006277246A - Http server execution device, control method, and storage medium - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To switchingly start application programs on built-in equipment with minimized resources. <P>SOLUTION: An application program management device comprises a starting application program information storage part 202 storing a list of application programs to be started; an application program starting part 201 performing starting of the application programs; an application program code storage part 203 storing the codes of the application programs; and an application program execution part 204 executing the application programs. Further, this device comprises a device information storage part 205 storing setting information of the device, and the application programs acquire setting information of equipment from the device information storage part 205 to determine an execution mode. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  Execution of an HTTP server using SSL or an HTTPS server on an embedded device such as a digital copier, and transfer for transferring access to a normal HTTP server to an HTTPS server using SSL when executing an HTTPS server using SSL This technology aims to reduce the complexity of startup processing, minimize changes in device settings, and minimize the number of HTTP servers to be started in HTTP server execution.

(1) Application program management device When executing multiple programs on embedded devices with limited resources such as memory and CPU, it is not necessary to simply run individual programs as separate processes. In many cases, an application program is executed on the process of the application program management apparatus (101) using the application program management apparatus (101). An example of such an application program management apparatus is an OSGi server. The OSGi server executes multiple Java (registered trademark) (programming language and program execution environment specified by US Sun Microsystems, registered trademark of US Sun Microsystems) programs on embedded devices such as home gateways. This is an application program execution server that manages the OS, and its specifications are defined by the OSGi Alliance.

  The application program management apparatus (101) stores information on an application program to be started when the device is started, and starts the application program according to the order of the information.

(2) HTTP service
The HTTP service has an API for registering content services such as Servlets and HTML data. When the content service is started, the user uses the content service through the HTTP service by registering with the HTTP service using the API. It is possible. Note that Servlet is an HTTP server extension interface whose specifications are defined by Sun Microsystems, USA, and is written in Java (registered trademark). The HTTP service is described in Patent Document 1.

  Since the HTTP service has an API for registering content services such as Servlet and HTML data, it is possible to dynamically register and delete content services such as Servlet and HTML data for the running HTTP service. ing.

  For the above application program management device (101), the HTTP service (102) for realizing the HTTP server and the content service (106) such as Servlet (105) and HTML data which are extensions of the HTTP server are equally one service program. Is started and stopped in the application program management apparatus (101).

(3) HTTP server extension programs Currently, many of the HTTP servers implemented not only transfer static files such as HTML and image files stored on the server to the client, but also dynamically transfer data. Generate and transfer to client. Typical extended program interfaces include Servlet and CGI. By using functions such as Servlet and CGI, it is possible to perform interactive processing with the user who uses the client.

(4) HTTPS
Since HTTP communication is not encrypted, it can be intercepted and modified in the middle of the communication path. HTTPS uses SSL (Secure Socket Layer), which encrypts the transport layer of the OSI reference model, in order to securely transmit privacy information and credit card numbers.
Japanese Patent Laid-Open No. 2002-196931

  However, in the above-described conventional example, there are some problems that occur when an application program and another application program are switched and started depending on device settings.

  For example, you can prepare both an HTTP server program and an HTTPS server program that uses SSL, and start one of them according to the setting information on whether or not to use SSL when starting the application program. In addition to requiring storage to store the application program code of both the HTTP server and HTTPS server, processing for determining the setting information and determining the program to be started is added to the processing when starting the application program. The startup process becomes complicated. Furthermore, in addition to switching between the HTTP server and the HTTPS server that uses SSL, when performing the same thing in other application programs, multiple setting information determination processes with different determination conditions will be added to the startup process, Application program startup processing cannot be implemented for general use.

  Also, prepare both the HTTP server program and the HTTPS server program that uses SSL, and store the application program to be started so that only one of them will start when setting information for whether or not to use SSL is set. It is also possible to change the list of application programs stored in the startup application program information storage unit, but in general, for embedded devices, in order to achieve device stability, unlike user application programs, It is not desirable to change information about which application programs are started in which order with respect to basic application programs that are started when the device is started. Furthermore, when the same thing is done with other application programs, the process of changing the startup application program information storage unit without affecting other application programs becomes complicated and non-generic.

  In addition, it is very difficult to perform the above-described method in an embedded device in which device resources (CPU power, memory, storage) and the like are limited.

  The present invention has been made under such a background. An object of the present invention is to provide an application program management device that changes an application program to be started efficiently and more efficiently on an embedded device with less resources. is there.

  Furthermore, another problem is that the application program management device, the HTTP server that is activated as an HTTPS server using SSL by the device setting information or a normal HTTP server, and the transfer HTTP server or server by the device setting information Consists of a transfer HTTP server that does not start up, and when SSL usage is set, if a user accesses the normal port, it is automatically transferred to an HTTPS server using SSL to provide the user with more secure access. Another object of the present invention is to provide an HTTP server execution device that saves device resources by not starting unnecessary transfer HTTP servers when SSL non-use is set.

In order to achieve the above object, an application program management device according to claim 1 of the present invention includes a start application program information storage unit that stores a list of application programs to be started, and an application program start unit that starts an application program. An application program management device comprising application program code storage means for storing the code of the application program and application program execution means for executing the application program;
Device information storage means for storing device setting information;
It is characterized by comprising zero or more application programs having device information acquisition means for acquiring device setting information from the device information storage means and device information determination means for determining the acquired device information.

According to a second aspect of the present invention, there is provided a control method for an application program management apparatus comprising: a start application program information storage step for storing a list of application programs to be started; an application program start step for starting an application program; and an application program code An application program management step comprising an application program code storage step for storing the application program execution step for executing the application program,
An apparatus information storage step for storing apparatus setting information;
The apparatus information storing step includes a device information acquiring step for acquiring device setting information and a device information determining step for determining the acquired device information.

A storage medium storing a control program for an application program management apparatus according to claim 3 is a startup application program information storage procedure for storing a list of application programs to be started, an application program startup procedure for starting an application program, and an application program An application program management procedure comprising an application program code storage procedure for storing the code and an application program execution procedure for executing the application program;
A device information storage procedure for storing device setting information;
Stores a program comprising a device information acquisition procedure for acquiring device setting information from the device information storage procedure and zero or more application programs having a device information determination procedure for determining the acquired device information is doing.

In order to achieve the above object, the HTTP server execution device according to claim 4 of the present invention includes a start application program information storage unit that stores a list of application programs to be started, and an application program start unit that starts the application program. An application program management device comprising application program code storage means for storing the code of the application program and application program execution means for executing the application program;
Device information storage means for storing device setting information;
An HTTP server having device information acquisition means for acquiring device setting information from the device information storage means, and device information determination means for determining the acquired device information;
It is characterized by comprising a transfer HTTP server having device information acquisition means for acquiring device setting information from the device information storage means and device information determination means for determining the acquired device information.

According to a fifth aspect of the present invention, there is provided a control method for an HTTP server execution device, a start application program information storage step for storing a list of application programs to be started, an application program start step for starting an application program, and an application program code An application program management step comprising an application program code storage step for storing the application program execution step for holding the activated application program,
An apparatus information storage step for storing apparatus setting information;
An HTTP server having a device information acquisition step of acquiring device setting information from the device information storage step and a device information determination step of determining the acquired device information;
It is characterized by comprising an HTTP server for transfer having a device information acquisition step of acquiring device setting information from the device information storage step and a device information determination step of determining the acquired device information.

A storage medium storing a control program for an HTTP server execution device according to claim 6 is a startup application program information storage procedure for storing a list of application programs to be started, an application program startup procedure for starting an application program, and an application program An application program management procedure comprising an application program code storage procedure for storing the code and an application program execution procedure for executing the application program;
A device information storage procedure for storing device setting information;
An HTTP server having a device information acquisition procedure for acquiring device setting information from the device information storage procedure, and a device information determination procedure for determining the acquired device information;
A program storing a device information acquisition procedure for acquiring device setting information from the device information storage procedure and a transfer HTTP server having a device information determination procedure for determining the acquired device information; Yes.

  The application program management apparatus according to claim 1 of the present invention, the control method of the application program management apparatus according to claim 2, and the program code executed by the application program management apparatus stored in the storage medium according to claim 3 Therefore, the function of the application program to be started is changed without increasing the number of application programs to be installed, without complicating the processing in the application program starting means, without changing the information of the application program to be started. It is possible to execute.

The HTTP server execution device according to claim 4 of the present invention, the control method of the HTTP server execution device according to claim 5, and the program code executed by the HTTP server execution device stored in the storage medium according to claim 6 Therefore, without complicating the processing in the application program starting means, without changing the information of the application program to be started, without increasing the number of application programs to be installed, using SSL set in the device, Just change the non-use information,
It is possible to switch between starting an HTTP server or starting a transfer HTTP server that transfers a request to an HTTPS server using SSL and an HTTPS server using SSL.

  In addition, by starting up two servers, an HTTPS server using SSL and a transfer HTTP server that forwards requests to an HTTPS server using SSL, the normal HTTP server port can be accessed without burdening the user. Users can use an HTTPS server with SSL to achieve higher security access.

  FIG. 1 is a diagram showing the configuration of the HTTP server of the present invention. The HTTP server of the present invention includes an application program management device (101) for managing an HTTP server program and other application programs, an HTTP server (102), an HTTP server for transfer (103), and zero or more servlets operating on the HTTP server (105), zero or more HTML contents (106) registered in the HTTP server, and zero or more other application programs (104) other than the HTTP server.

  Other application programs include application programs having a user interface.

  As shown in the block diagram of FIG. 2, the application program management apparatus of FIG. 1 stores an application program information storage that stores an application program activation unit (201) that activates an application program and a list of application programs to be activated. Unit (202), an application program code storage unit (203) for storing the program code of the application program, an application program execution unit (204) for executing the application program, and device information for storing information such as devices acquired by the application program The storage unit (205) is configured.

  The activated application program information storage unit (202) is a list of names of application programs to be activated as shown in FIG.

  The device information storage unit (205) stores device information as key / value pair data as shown in FIG.

  The application program code storage unit (203) stores the program code of the application program as shown in FIG.

  The application program activation unit (201) activates application programs in the order shown in FIG.

  First, start-up processing is started by powering on the device or user start-up processing start instruction (step 601). Next, a list of names of application programs to be activated stored in the activated application program information storage unit (202) is acquired (step 602).

  The name of the application program to be activated is acquired from the list acquired in step 602 (step 603).

  The program code corresponding to the application program name acquired in step 603 is loaded from the application program code storage unit (203) (step 604) and activated (step 605).

  Next, it is checked whether or not the end of the list acquired in step 602 is reached (step 606). If not, the process proceeds to step 603 to continue the processing. If it is the last, the activation process is terminated (step 607).

  The application program activation unit (201) activates the application programs in the order described in the list of application program names to be activated stored in the activation application program information storage unit (202). In embedded devices, it is often difficult to change the contents of the startup application program information storage unit (202) and the list order.

  The HTTP server (102) has a function of operating as a normal HTTP server or an HTTPS server using an SSL socket, and is started in the order shown in FIG.

  When the HTTP server activation process is started by the application program activation unit (201) of the application program management apparatus (101) (step 701), the value of the key "SSL" is acquired from the device information storage unit (205) ( Step 702).

  Next, it is checked whether the information acquired in step 702 is “on” (step 703). If it is “on”, a server socket is generated using the SSL Socket library to connect with the client (step 704). Then, the server is started with the port number (eg 443) of the HTTPS server (step 706). If it is not `` on '', a server socket is generated using a normal socket library to connect to the client (step 705), and the server is started with a normal HTTP server port number (e.g. 80) (step 706). ). When the server is started, the HTTP server startup processing is terminated (707).

  Since it is the same except for the Socket library to be used, it does not vary greatly in the resources used by the HTTP server program, regardless of whether it is started as an HTTPS or HTTP server.

  The HTTP server for forwarding has a function to forward a request to the HTTPS server when the client accesses the normal port when the HTTP server is operating with the HTTPS server. Perform startup processing in order.

  When the application program startup unit (201) of the application program management device (101) starts the transfer HTTP server startup process (step 801), the key information "SSL" is obtained from the device information storage unit (205). (Step 802).

  Next, it is checked whether the information acquired in step 802 is “on” (step 803). If it is “on”, a server socket is generated to connect to the client and the server is started (step 804). The transfer HTTP server activation process is terminated (step 805). At this time, since an HTTP server having a minimum necessary function for transfer is started, consumption of the resources of the device can be suppressed.

  If it is not “on”, the transfer HTTP server start-up process is terminated without starting the server (step 805). At this time, since the HTTP server for transfer is not started, the device resources are not consumed.

  When the servlet or HTML content is activated by the program launcher, it is registered in the running HTTP server. At this time, the Servlet or HTML content does not need to detect whether the server with which it is registered is a server that uses a normal socket or a server that uses an SSL socket.

  Next, how the request from the client is transferred from the transfer HTTP server to the HTTPS server will be described with reference to FIG.

  When the value of the key “SSL” in the device information storage unit (205) is “on”, the HTTPS server is activated on the port 443 and the transfer HTTP server is activated on the port 80. Ports 443 and 80 are generally used for HTTPS servers and HTTP servers, so they are only used as examples. It doesn't matter if the server is running.

  Furthermore, it is assumed that a servlet named “ServletA” is registered in the HTTPS server.

  When the user instructs the client program to issue a request for "http: // server address / ServletA" (step 901), if the server port number is omitted in HTTP, the server that operates on port 80 Therefore, the client program transmits the following request to the 80th port of the server indicated by the server address (step 902).

GET / ServletA
Host: Server address: 80
When the value of the key “SSL” in the device information storage unit is “on”, the HTTP server for transfer is activated on the port 80, so the request is received by the HTTP server for transfer (step 903). ).

  The transfer HTTP server returns the following response to the client in order to transfer the request to the HTTPS server (step 904).

302 Moved Temporarily
Location: http: // server address: 443 / ServletA
The client program that has received the response (step 905) interprets the URL described in the location header of the response, and sends the following request to the port 443 of the server indicated by the server address (step 906). ).

GET / ServletA
Host: Server address: 443
When the value of the key “SSL” in the device information storage unit is “on”, it is the HTTPS server that is running on the port 443, so the above request is received by the HTTPS server (step 907).

  When the HTTPS server receives the request. It is checked whether there is a servlet named “ServletA” registered in the HTTPS server (step 908).

  If it exists (step 909), the request is passed to ServletA, and ServletA processes the request (step 910), generates response data, and returns the following response to the client through the HTTPS server (step 911).

200 OK
data···
If it does not exist (step 910), the HTTPS server returns an error response to the client (step 912).

  The client receives the response returned from the HTTPS server (step 913), and ends the request processing for the server (step 914).

  As described above, when multiple application programs are started on an embedded device, the application program to be started is not changed without complicating the processing in the application program starting unit, and without changing the information of the application program to be started. The function of the application program to be started can be changed and executed without increasing the number of programs.

It is a figure which shows the structure of the HTTP server execution apparatus of this invention. It is a figure which shows the structure of the application program management apparatus which comprises the HTTP server execution apparatus of this invention. It is a figure which shows the starting application program information storage part which comprises the HTTP server execution apparatus of this invention. It is a figure which shows the apparatus information storage part which comprises the HTTP server execution apparatus of this invention. It is a figure which shows the apparatus information storage part which comprises the HTTP server execution apparatus of this invention. It is a flowchart of the application program starting process of the HTTP server execution apparatus of this invention. It is a flowchart of HTTP server starting processing. It is a flowchart of the HTTP server starting process for transfer. It is a flowchart of the request process from a client.

Explanation of symbols

101 Application program management device
102 HTTP server
103 HTTP server for transfer
104 Other application programs
105 Servlet
106 HTML content

Claims (6)

An application program management device that can execute multiple application programs.
Application program information storage means for storing a list of application programs to be started, application program start means for starting application programs, application program code storage means for storing application program codes, and application programs for executing the started application programs An application program management device comprising execution means;
Device information storage means for storing device setting information;
Consists of zero or more application programs having device information acquisition means for acquiring device setting information from the device information storage means and device information determination means for determining the acquired device information,
The application program is stored in the startup application program information storage means as an application program to be started,
The program code of the application program is stored in the application program code storage means,
When the application program is started by the application program starting means, a code is loaded from the application program code storage means. When the application program is executed by the application program execution means, the application program is stored by the apparatus information acquisition means. An application program management apparatus characterized in that apparatus setting information is acquired from the means, apparatus setting information is determined by the apparatus information determination means, and an execution mode is determined according to the determination by the determination means. In a control method of an application program management apparatus capable of executing a plurality of application programs,
An application program information storing step for storing a list of application programs to be started, an application program starting step for starting the application program, an application program code storing step for storing the code of the application program, and an application program for executing the started application program An application program management process comprising execution processes;
An apparatus information storage step for storing apparatus setting information;
Consists of zero or more application programs having a device information acquisition step of acquiring device setting information from the device information storage step and a device information determination step of determining the acquired device information,
The application program is stored in the startup application program information storage step as an application program to be started,
The program code of the application program is stored in the application program code storage step,
When the application program is started in the application program starting step, a code is loaded from the application program code storing step. When the application program is executed in the application program executing step, the application program is stored in the device information acquiring step in the device information acquiring step. A method for controlling an application program management apparatus, comprising: acquiring apparatus setting information from a process; determining apparatus setting information in the apparatus information determining process; and determining an execution mode according to the determination in the determining process . In a storage medium storing a program code executed by an application program management apparatus capable of executing a plurality of application programs,
An application program information storing procedure for storing a list of application programs to be started, an application program starting procedure for starting an application program, an application program code storing procedure for storing a code of the application program, and an application program for executing the started application program Application program management procedure consisting of execution procedures;
A device information storage procedure for storing device setting information;
Consists of a device information acquisition procedure for acquiring device setting information from the device information storage procedure and zero or more application programs having a device information determination procedure for determining the acquired device information,
The application program is stored in the startup application program information storage procedure as an application program to be started,
The program code of the application program is stored in the application program code storage procedure,
When the application program is started by the application program starting procedure, a code is loaded from the application program code storing procedure, and when the application program is executed by the application program executing procedure, the application program stores the device information by the device information acquiring procedure. Storage of program code characterized in that apparatus setting information is acquired from a procedure, apparatus setting information is determined in the apparatus information determination procedure, and an execution mode is determined according to the determination in the determination procedure Medium. HTTP server execution device
Application program information storage means for storing a list of application programs to be started, application program start means for starting application programs, application program code storage means for storing application program codes, and application programs for executing the started application programs An application program management device comprising execution means;
Device information storage means for storing device setting information;
An HTTP server having device information acquisition means for acquiring device setting information from the device information storage means, and device information determination means for determining the acquired device information;
Consists of a device information acquisition means for acquiring device setting information from the device information storage means and a transfer HTTP server having a device information determination means for determining the acquired device information,
The transfer HTTP server transfers a request to the HTTP server when there is a request from a client,
The HTTP server and the HTTP server for transfer are stored in the startup application program information storage means as an application program to be started,
Program codes of the HTTP server and the transfer HTTP server are stored in the application program code storage means,
The device information storage means stores information on whether to use SSL as device setting information,
When the HTTP server and the transfer HTTP server are activated by the application program activation unit, a code is loaded from the application program code storage unit and executed by the application program execution unit.
The HTTP server acquires information on whether or not to use SSL from the device information storage unit by the device information acquisition unit, determines whether SSL is used or not by the device information determination unit, and determines whether SSL is used by the determination unit. If it is determined to be used, it is executed by the application program execution means as an HTTPS server using SSL, and if it is determined that SSL is not used by the determination means, it is executed by the application program execution means as a normal HTTP server,
The transfer HTTP server acquires information on whether or not to use SSL from the device information storage unit by the device information acquisition unit, determines whether SSL is used or not by the device information determination unit, and determines whether SSL is used by the determination unit An HTTP server execution apparatus, which is executed by the application program execution means as a transfer HTTP server when it is determined to be used, and is suspended when it is determined that SSL is not used by the determination means. In the control method of the HTTP server execution device,
An application program information storing step for storing a list of application programs to be started, an application program starting step for starting the application program, an application program code storing step for storing the code of the application program, and an application program for executing the started application program An application program management process comprising execution processes;
An apparatus information storage step for storing apparatus setting information;
An HTTP server having a device information acquisition step of acquiring device setting information from the device information storage step and a device information determination step of determining the acquired device information;
Consists of a device information acquisition step of acquiring device setting information from the device information storage step and a transfer HTTP server having a device information determination step of determining the acquired device information,
The transfer HTTP server transfers a request to the HTTP server when there is a request from a client,
The HTTP server and the HTTP server for transfer are stored in the startup application program information storage step as an application program to be started,
The program code of the HTTP server and the HTTP server for transfer is stored in the application program code storage step,
The device information storage step stores information on whether to use SSL as device setting information,
When the HTTP server and the transfer HTTP server are started in the application program starting step, a code is loaded from the application program code storing step, and executed in the application program executing step.
The HTTP server acquires whether or not SSL is used from the device information storage step in the device information acquisition step, determines whether SSL is used or not in the device information determination step, and determines whether SSL is used in the determination step. If it is determined to be used, it is executed in the application program execution step as an HTTPS server using SSL, and if it is determined that SSL is not used in the determination step, it is executed in the application program execution step as a normal HTTP server,
The transfer HTTP server acquires SSL use availability information from the device information storage step in the device information acquisition step, determines whether SSL is used or not in the device information determination step, and uses SSL in the determination step. A control method for an HTTP server execution device, wherein if determined, the HTTP server is executed as a transfer HTTP server in the application program execution step, and if it is determined in the determination step that SSL is not used, the execution is interrupted. In a storage medium storing program code executed by the HTTP server execution device,
An application program information storing procedure for storing a list of application programs to be started, an application program starting procedure for starting an application program, an application program code storing procedure for storing a code of the application program, and an application program for executing the started application program An application program management procedure comprising execution procedures;
A device information storage procedure for storing device setting information;
An HTTP server having a device information acquisition procedure for acquiring device setting information from the device information storage procedure, and a device information determination procedure for determining the acquired device information;
Consists of a device information acquisition procedure for acquiring device setting information from the device information storage procedure and a transfer HTTP server having a device information determination procedure for determining the acquired device information,
The transfer HTTP server transfers a request to the HTTP server when there is a request from a client,
The HTTP server and the HTTP server for transfer are stored in the startup application program information storage procedure as an application program to be started,
The program code of the HTTP server and the HTTP server for transfer is stored in the application program code storage procedure to be performed,
The device information storage procedure stores information on whether or not to use SSL as device setting information,
When the HTTP server and the transfer HTTP server are started in the application program start procedure, a code is loaded from the application program code storage procedure, and executed in the application program execution procedure.
The HTTP server acquires information on whether to use SSL from the device information storage procedure in the device information acquisition procedure, determines whether SSL is used or not in the device information determination procedure, and uses SSL in the determination procedure. If it is determined that it is executed in the application program execution procedure as an HTTPS server using SSL, if it is determined that SSL is not used in the determination procedure, it is executed in the application program execution procedure as a normal HTTP server,
The transfer HTTP server acquires SSL use availability information from the device information storage procedure in the device information acquisition procedure, determines whether SSL is used or not in the device information determination procedure, and uses SSL in the determination procedure. A program characterized by executing an HTTP server as a transfer HTTP server when determined, and executing the application program according to the procedure described above, and suspending the execution when it is determined that SSL is not used according to the determination procedure. A storage medium that stores codes.

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