JP2003330803A - Information access device, information access method, program for realizing the method by computer, and record medium recording the program - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a user with information according to the user's request while access to the information on Web is limited. <P>SOLUTION: An information access server 200 includes a file obtaining part 224 for obtaining a file requested by a user, a HTML file group storage part 214 for storing the obtained information, an address generating part 228 for generating an address for storing the obtained information on deciding to obtain a file by an address deciding part 222, and a link detecting, changing and recursion performing part 230 for extracting link information from the obtained information, and converting the extracted link information in association with the generated address. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a WWW (World wi
de Web, hereinafter referred to as Web), and more particularly to a technology for storing information requested by a user.

[0002]

2. Description of the Related Art With the development of networks such as the Internet and intranet, there are many technologies for managing information provided in a Web environment. Japanese Patent Laid-Open No. 2001-35
The 6983 publication discloses one of such management techniques.

The information disclosure restriction system disclosed in this publication changes a URL (Uniform Resource Locators) generating circuit for generating a fixed-length character string from a given input value and a URL of information to be disclosed at regular intervals. An information disclosure restriction server device including a URL changing circuit and a web server circuit, and a URL imitating the URL changing process of the server device
It includes a generation / change circuit and a dedicated client device including a Web browser function.

According to the system described in this publication,
The information disclosure restriction server device constantly changes the URL of the disclosure restriction information distributed from the information disclosure restriction server device at regular intervals. Only the user having the dedicated client device can change the URL constantly by the operation of the URL generation / change circuit.
L can be correctly generated and stably accessed. As a result, since a general client device that is not permitted to access does not have the URL generation / change circuit, it is not possible to obtain a URL for accessing a file whose disclosure is restricted. As a result, there is no need to construct an authentication server device or a database for storing user information. Therefore, it is possible to extremely easily realize an information disclosure site for limited users that does not require management and operation costs.

[0005]

However, in the system described in the above publication, even if complicated processing such as user authentication can be avoided, access is performed using a dedicated client device having a URL generation / change circuit. There is a need.

The present invention has been made to solve the above-mentioned problems, and provides a user with information in a simple manner while restricting access to information on the Web and in response to the user's request. An object of the present invention is to provide an information access device, an information access method, a program that causes a computer to implement the method, and a recording medium that records the program.

[0007]

An information access device according to a first aspect of the present invention comprises an acquisition means for acquiring information requested by a user, and a storage means for storing the information acquired by the acquisition means. , Generating means for generating an address for storing the acquired information based on a preset condition, and an address generated by the generating means,
Control means for controlling the storage means to store the information.

According to the first aspect of the invention, when the user requests acquisition of information on the Web, the information is acquired by the acquisition means. The URL of the information is a predetermined U
When it is RL or the information satisfies a predetermined condition such as having a specific file identifier, an address for storing the acquired information is generated. This address may be an address different from the above-mentioned URL or may be an address created using a random number. The control means stores the acquired information in the created address. As a result, the information is stored in an address different from the original URL, which reduces the possibility that the original URL will be known. Therefore, direct access to the original URL can be restricted, and the address generated by the generation means can be restricted. Information can be provided in response to the user's request. As a result, it is possible to provide an information access device that can provide information to a user in response to a user's request while restricting access to information on the Web.

The information access device according to the second invention further comprises random number generating means for generating a random number in addition to the configuration of the first invention. The generating means includes means for generating an address by using the random number generated by the random number generating means.

According to the second invention, since an address using a random number is generated, it is not possible to easily know the generated address, so access to this address can be restricted and the original URL can be known. Since it is less accessible, it is possible to restrict direct access to the original URL.

An information access device according to a third aspect of the present invention further includes detection means for detecting the date and time in addition to the configuration of the first aspect of the invention. The generating means includes means for generating an address using the date and time detected by the detecting means.

According to the third aspect of the invention, since the address is generated by using the date and time, the generated address cannot be easily known (for example, it is easy to generate the address by expressing the date and time information in hexadecimal number). I can't know)
So you can restrict access to this address, the original UR
Since L is less likely to be known, direct access to the original URL can also be restricted.

In the information access device according to the fourth aspect of the present invention, in addition to the configuration of any one of the first to third aspects of the invention, the generation means satisfies that the information storage destination is a preset storage destination. Then, it includes means for generating an address for storing the obtained information.

According to the fourth aspect, when the information storage destination is a predetermined URL, the file specified by the URL can be stored at the address generated by the generating means.

In the information access device according to the fifth invention, in addition to the configuration of any one of the first to fourth inventions, the information acquired by the acquisition means includes link information to other information. The information access device, for extracting the link information from the information obtained by the obtaining means, and converting the link information extracted by the extracting means in association with the address generated by the generating means. And conversion means.

According to the fifth aspect, when the acquired information includes the link information, the link information is extracted. The extracted link information is converted corresponding to the generated address. For example, when information having a URL specified as link information is acquired, an address at which the information specified by the URL is stored is generated based on a predetermined condition, and the address is associated with the generated address. Link information is converted. As a result, even when the information requested by the user to be acquired includes link information, while maintaining the link relationship and restricting access to information on the Web, the information can be provided in response to the user's request. An information access device that can be provided to

An information access apparatus according to a sixth aspect of the present invention further comprises, in addition to the configuration of any one of the first to fifth aspects, a set time detecting means for detecting that a preset time has come. Including. The generating unit includes a unit for generating an address for storing the acquired information when the set time detecting unit detects that the preset time has come.

According to the sixth aspect, an address for storing the acquired information is generated at a preset time, and the information is stored at the generated address. For example, if 5 minutes is set as the predetermined time, an address is generated every 5 minutes, and the address where the information is stored is changed one after another. Since the address is generated over time, it is not possible to know the generated address easily, so access to this address can be restricted and the original U
Direct access to the original URL can also be restricted as the RL is less likely to be known.

An information access method according to a seventh aspect of the present invention comprises an acquisition step of acquiring information requested by a user,
The storage step of storing the information acquired in the acquisition step, the generation step of generating an address for storing the acquired information based on a preset condition, and the information generated in the address generated in the generation step And a control step of controlling the storing step to store

According to the seventh aspect, when the user requests acquisition of information on the Web, the information is acquired in the acquisition step. When the URL of the information is a predetermined URL or the information satisfies a predetermined condition such as having a specific file identifier, an address for storing the acquired information is generated. This address may be an address different from the above-mentioned URL or may be an address created using a random number. In the control step, the acquired information is stored in the created address. As a result, the information is stored in an address different from the original URL, which reduces the possibility that the original URL will be known. Therefore, direct access to the original URL can be restricted, and the original URL is generated. Information can be provided according to the request of the user who knows the address. As a result, the Web
It is possible to provide an information access method capable of providing information to a user in response to a user's request while limiting access to the above information.

In the information access method according to the eighth invention, in addition to the configuration of the seventh invention, the information acquired in the acquisition step includes link information to other information. The information access method includes an extraction step for extracting link information from the information acquired in the acquisition step, and a conversion for converting the link information extracted in the extraction step in association with the address generated in the generation step. And a step.

According to the eighth aspect, when the acquired information includes the link information, the link information is extracted. The extracted link information is converted corresponding to the generated address. For example, when information having a URL specified as link information is acquired, an address at which the information specified by the URL is stored is generated based on a predetermined condition, and the address is associated with the generated address. Link information is converted. As a result, even when the information requested by the user to be acquired includes link information, while maintaining the link relationship and restricting access to information on the Web, the information can be provided in response to the user's request. It is possible to provide an information access method that can be provided to.

The program according to the ninth invention is a program for realizing the information access method according to the seventh or eighth invention by using a computer.

According to the ninth invention, it is possible to provide a program for causing a computer to realize an information access method capable of providing information to a user in response to a user's request while restricting access to information on the Web. it can.

A recording medium according to the tenth invention is a recording medium recording the program according to the ninth invention.

According to the tenth aspect of the present invention, a recording medium recording a program for causing a computer to realize an information access method capable of providing information to a user in response to a user's request while restricting access to information on the Web. Can be provided.

[0027]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. In the following description, the same parts are designated by the same reference numerals. Their names and functions are also the same. Therefore, detailed description thereof will not be repeated.

<First Embodiment> An information access system according to the present embodiment will be described. As shown in FIG. 1, this information access system includes a client computer 100 having a WWW browser function, an information access server 200, and a client computer 10.
0 and a network 120 for connecting the information access server 200.

The information access server 200 includes a WWW server section 210, an information access conversion section 220, a setting file storage section 250, and a timer 260. The WWW server unit 210 includes an HTML (HyperText Markup Language) file group storage unit 212 that stores files before file processing, which will be described later, and an HTML file group storage unit 214 that stores files after file processing. The information access conversion unit 222 includes an address determination unit 222, a file acquisition unit 224, a random number generation unit 226, an address generation unit 228, a link detection / change / recursive execution unit 230.
A file storage unit 232 and a confirmed file name storage unit 234.

The client computer 100 is a WW
It has a W-browser function, and the user inputs an instruction of information requested to be browsed, and the network 12 such as the Internet.
The file is requested to the information access server 200 via 0. The client computer 100 displays the file transmitted from the information access server 200.

The information access server 200 is accessed by the WWW browser of the client computer 100 via the network 120 such as the Internet. The HTML file group storage unit 214 includes an HTML file group storage unit 21 by the information access conversion unit 220.
The information generated based on the information stored in 2 is stored. The HTML file group storage unit 212 contains HTML files.
In addition to files, files such as images and sounds, and CGI
A dynamic file output by a script, a Java (R) servlet, or the like is stored.

The WWW server unit 210 is the network 1
Based on the file request received from the client computer 100 via 20, the files stored in the HTML file group storage unit 212 and the HTML file group storage unit 214 are transmitted. Information access converter 220
Is activated by the timer 260. The information access conversion unit 220 transmits a file request to the WWW server unit 210, and stores the file output from the WWW server unit 210 in the HTML file group storage unit 214 of the WWW server unit 210. At the time of this storage, the file is stored at the position corresponding to the address generated by the address generation unit 228.

The address determination unit 222 of the information access conversion unit 220 acquires the file corresponding to the address by the file acquisition unit 224 based on the condition specified in the setting file stored in the setting file storage unit 230. Determine whether to do. The file acquisition unit 224
The file corresponding to the address determined to be acquired by the address determination unit 222 is the WWW server unit 21.
The content of the acquired file is transmitted to the link detection / change / recursive execution unit 230. Random number generator 23
2 generates a random number, and the generated random number is transmitted to the address generator 228.

The address generator 228 is connected to the random number generator 22.
6 and the setting file storage unit 250
The storage location of the file acquired by the file acquisition unit 224 is generated based on the stored setting file of. The link detection / modification / recursive execution unit 234 is a file acquisition unit 2.
If the file acquired at 24 is a file having a hyperlink to another file such as an HTML file, the hyperlink is detected. In addition, for each hyperlink destination address, if the address determining unit 230 determines that the file should be stored based on the setting file stored in the setting file storage unit 250, the hyperlink link destination is determined. While changing to the character string generated by the address generation unit 228, acquisition and storage of the file existing at the link destination of the hyperlink are recursively executed.

The file storage section 232 stores the file whose hyperlink destination has been changed by the file link detection / change / recursive execution section 234 at a position corresponding to the address generated by the address generation section 228. Also,
Information indicating the correspondence between the address of the file acquired by the file acquisition unit 224 and the address generated by the address generation unit 228 is stored in the confirmed file name storage unit 236.

The confirmed file name storage unit 236 stores a list of files acquired by the file processing routine and prevents the same file from being acquired multiple times. The timer 260 activates the information access conversion unit 220 at a certain timing. In the present embodiment, the timing at which the information access conversion unit 220 is activated is defined inside the timer 260, but the timing is not limited to this. The activation timing may be described in a setting file described later, or may be provided outside the timer 260.

The setting file stored in the setting file storage unit 250 is read by the information access conversion unit 220. The setting file includes a criterion for determining whether or not the address determination unit 222 needs to acquire a file, a generation rule for generating an address from the random number generated by the random number generation unit 226, a position (UR) of the WWW server unit 212.
L, address), information specifying the position (URL, address) of the HTML file group storage unit 214 that is the storage destination, and the like are stored.

In the present embodiment, the setting file is described as a file existing outside the information access conversion unit 220, but the present invention is not limited to this. It can also be set inside the information access converter 220. Further, setting information such as a setting file may be stored both inside and outside the system and one of them may be used at the time of execution.

FIG. 2 shows an appearance of a computer system which is an example of the information access server 200. With reference to FIG. 2, the computer system 300 includes an FD (Flexib
le Disk) drive unit 306 and CD-ROM (Compact
Disc-Read Only Memory) Computer 302 having a drive unit 308, monitor 304, and keyboard 310
And a mouse 312.

FIG. 3 shows the computer system 300.
The configuration is shown in block diagram form. As shown in FIG. 3, in addition to the FD drive device 306 and the CD-ROM drive device 308 described above, the computer 302 includes a CPU (Central Processing Unit) 320 interconnected by a bus.
A memory 322, a fixed disk 324, and a communication interface 326. An FD 316 is attached to the FD drive device 306. CD-ROM drive device 308
A CD-ROM 318 is attached to the.

As described above, the information access server 200 includes the computer hardware and the CPU 320.
It is realized by software executed by. Generally, such software is FD316, CD-R.
It is stored in a recording medium such as the OM 318 and distributed, is read from the recording medium by the FD driving device 306 or the CD-ROM driving device 308, and is temporarily stored in the fixed disk 324. Furthermore, from the fixed disk 324 to the memory 3
It is read out to 22 and executed by the CPU 320. The computer hardware itself shown in FIGS. 2 and 3 is general. Therefore, the most essential part of the present invention is the software recorded on the recording medium such as the FD 316, the CD-ROM 318, and the fixed disk 324.

Since the operation of the computer itself shown in FIGS. 2 and 3 is well known, its detailed description will not be repeated here.

FIG. 4 shows information stored in the confirmed file name storage unit 234. As shown in FIG. 4, the confirmed file name storage unit 234 stores the file name before conversion,
The converted file name corresponding to the file name before conversion is stored. For example, "image.htm before conversion"
It is remembered that the file name "l" corresponds to the file name "38xjlk4QO / image.html". The “38xjlk4QO” portion corresponds to the random number generated by the random number generation unit 226.

FIG. 5 shows an example of the setting file 400 stored in the setting file storage unit 250. The setting file 400 includes, for the WWW server unit 210, a storage area 410 for storing the URL of the file to be acquired first,
A storage area 420 for storing the storage destination of the file acquired from the WWW server unit 210, and a storage area 430 for storing the determination standard of the file acquisition in the address determination unit 222 and the address generation rule to be the storage destination when the file is acquired. including. In this example, storage area 410
Based on the information stored in the storage area 420 and the storage area 420, the URL first acquired by the information access conversion unit 220 is “ht
It is "tp: //wwwserver/top.html", and it can be seen that each acquired file is stored under "/ usr / local / apache / htdocs /". Further, based on the information stored in the storage area 430, the file acquisition standard and the generation rule of the storage destination address for the acquired file can be known.

As shown in FIG. 5, 1 in the storage area 410
The line is set to determine that a file is acquired for a URL including the character string "top.html". For the file, it is set that the generated address is "index.html". Two
The regular expression is used in the line "image23.html" and "imag
It is set that a file is acquired for a URL including a character string starting with "image" and ending with ".html" such as "e_test.html".

In the address generation rule, "RAND
The portion indicated by "OM" is a random character string generated by the address generation unit 228 based on the random number generated by the random number generation unit 226, and is, for example, "38xjIk4Q0".
Contains a proper combination of numbers and alphabets such as. Also, in the part indicated by `` $ 1 '', the character string in parentheses in the regular expression showing the acquisition criteria is entered, and `` image23.
"html" and "image_test.html". It is possible to use a plurality of parentheses, in which case the character strings within each parenthesis correspond in the order of "$ 1" and "$ 2".

The address of the storage destination using such a generation rule is the name of the original file ("image23.htm" after the random character string generated by the address generation unit 228.
"" and "image_test.html"). For a URL that does not match the file acquisition criteria in the storage area 430, the file is not acquired or the storage destination address is not generated. In addition, this setting file 400
In, lines beginning with “#” are comment lines.

Referring to FIG. 6, the program executed by CPU 320 of information access server 200 according to the present embodiment has the following control structure.

Step (hereinafter, step is abbreviated as S)
At 100, the CPU 320 causes the setting file storage unit 25 to
The setting file 400 is read from 0. In S200, C
The PU 320 sets the URL of the file to be acquired first. At this time, the storage area 41 of the setting file 400
Based on the contents stored in 0, the URL of the file to be acquired first is set.

At S300, CPU 320 executes file processing (file acquisition, analysis, and storage processing).
Details of this file processing will be described with reference to FIG.

Referring to FIG. 7, in S302, CPU3
20 determines whether or not the link destination is the URL of the processing target. This determination is made based on the information stored in the storage area 430 of the setting file 400 stored in the setting file storage unit 250. If the link destination is the URL to be processed (YES in S302), the process is S
Moved to 304. If not (N in S302
O), this process ends.

At S304, CPU 320 obtains the file. In S306, CPU 320 determines whether or not the file has been acquired. If the file can be acquired (YES in S306), the process proceeds to S308. If not (NO in S306), this process ends.

At S308, CPU 320 creates a storage destination address. At this time, the storage destination address is set based on the contents stored in the storage area 430 of the setting file 400. In S310, CPU 320 stores the file in the storage destination address. At this time, the file is stored in a predetermined area of the fixed disk 324.

At S312, CPU 320 stores the correspondence relationship between the URL and the storage destination address in confirmed file name storage section 234. In S314, the CPU 320
It is determined whether or not the file is to be analyzed in HTML format. If the file is to be analyzed in HTML format (YES in S314), the process proceeds to S316. If not (NO in S314), this process ends. In S316, the CPU 320 sets the HTML
The description language is analyzed to extract N link destinations.

At S318, CPU 320 initializes variable I (I = 1). In S320, the CPU320
Determines whether the I-th link destination is the already processed URL. This determination is made based on the contents stored in the confirmed file name storage unit 234. If the I-th link destination is a URL that has already been processed (S3
If YES at 20), the process proceeds to S326. If not (NO in S320), the process proceeds to S322.

At S322, CPU 320 executes file processing (file acquisition, analysis, and storage processing) for the I-th link destination. In S324, the CPU 32
0 sets the link destination to the storage destination address of the file acquired in S322.

At S326, CPU 320 adds 1 to variable I. In S328, CPU 320 causes variable I
Is greater than the extracted link number N. If the variable I is larger than the number of extracted links N (S
(YES at 328), the process ends. If not (NO in S328), the process returns to S320.

The operation of the information access system according to the present embodiment based on the above structure and flowchart will be described. In the following description of the operation, not the operation of the CPU 320 described in the flowchart but the operation of each functional block shown in FIG. 1 will be described. As described above, the information access server 200 is
Since it is realized by the CPU 320 and software,
It can be considered that the operation of the CPU 320 and the operation of each functional block are synonymous.

FIG. 8 shows the HTML of the WWW server section 210.
The structure of the Web page stored in the file group storage unit 212 is shown. HTML file 500 which is the top page
HTML file 51 that displays images from (top.html)
0 (image.html) and HTML file 5 that displays the description
A link is set to 30 (desc.html). A link is set from the HTML file 510 displaying the image to the file 520 (image.jpg) and the HTML file 500. In this WWW server section 210, the file location inside the information access server 200 corresponding to the URL "http: //wwwserver/top.html" for external reference is "/ usr / local / apache / htdocs / top.html ”.

A case where the information access conversion unit 220 is activated by using the setting file 400 shown in FIG. 5 for the Web page structure in FIG. 8 will be described. "Http: //wwwserver/top.htm", which is the URL to be acquired first, stored in the storage area 410 in the setting file 400
"l" is read (S100, S200), and this URL
File processing is executed on the file corresponding to (S300).

The address judging unit 222 judges whether the file is to be acquired (S302). "Top.htm
Since it is determined that “l” should be acquired from the first line of the storage area 430 of the setting file 400, the file (top.html) is acquired (S304) and the storage destination address is generated (S308). .

According to the first line of storage area 430,
For a file named "top.html", use "inde
Since it is shown that an address "x.html" is generated, by specifying the save destination stored in the storage area 420 of the setting file 400, "/ usr / l" corresponding to that position is specified.
The file is saved in "ocal / apache / htdocs / index.html" (S310). URL of this retrieved file
(http: //wwwserver/top.html) and the generated address
Correspondence with (index.html) is confirmed file name storage unit 23
4 is stored (S312).

It is determined whether or not this file is a file having a hyperlink (S314), and since this file is an HTML file, it is determined that analysis is necessary (YES in S314). This file is analyzed (S316), and assuming that this HTML file is the one shown in FIG. 9, by analyzing the tag structure in this HTML file, the HTML file 510 (image.html) and the HTML file 530 ( desc.ht
(ml) and the link to (S316, N =
2).

Whether or not the HTML file 510 (image.html), which is the first link destination, is the already confirmed URL is determined based on the information stored in the confirmed file storing unit 234 (S320). ). If this file is a file that has not been acquired yet (N in S320,
O), file processing is executed for “image.html” (S322). Also for this file, "top.htm
Similar to the case of "l", it is determined whether or not the file is to be acquired (S302), and since it is necessary to acquire from the second line of the storage area 430 (YES in S302), after the file is acquired. (S304), a storage destination address is generated (S308).

According to the second line of the storage area 430, the generation rule of the storage destination address generated for "image.html" is "$ RANDOM / $ 1".
“M” is a random character string generated based on the random number generated by the random number generation unit 226. The random character string here is assumed to be “38xjIk4Q0”. Also, "$ 1"
Represents a character string that conforms to the regular expression in the file acquisition determination standard, and is "image.html" in this example. Therefore, the generated address is `` 38xjlk4QO / image.
html ”.

Therefore, the URL obtained in S312
The pair of (http: //wwwserver/image.html) and the generated address (38xjlk4QO / image.html) is stored in the confirmed file name storage unit 234. "Image.html" is also HTML
It is determined that the file needs to be analyzed (YES in S314), and the HTML file 500 (to
p.html) and the file 520 (image.jpg) are extracted as link destinations and processed in the same manner.

Since the HTML file 500 (top.html), which is one of the link destinations from the HTML file 510, is the URL already confirmed by the confirmed file name storage unit 234 (YES in S320), the file is acquired. -Analysis and storage processing is not executed. Confirmed file name storage part 2
According to the correspondence between the URL in 34 and the generated address, the link destination is from the HTML file 500 (top.html) to the HTM.
It is changed to the L file 600 (index.html) (S32
4).

Since the file 520 (image.jpg), which is another link destination from the HTML file 510, is a file that has not been acquired yet, acquisition, analysis, and storage of the file for "image.jpg" are performed. It Since the file 520 (image.jpg) is a file to be stored based on the acquisition determination criteria in the third line of the storage area 430 (YES in S302), the file is acquired (S30
4), an address is generated (S308). The address generated at this time contains a random character string as in the case of "image.html". In this example, "d8GA
0aCJX "is generated.

Therefore, the acquired URL (http: // ww
wserver / image.jpg) and the generated address (d8GA0aCJX / i
mage.jpg) is stored in the confirmed file name storage unit 234. Since this file is not an HTML file (NO in S314), it is determined that analysis is unnecessary, the file is stored, and the file processing routine ends.

After the call of the file processing routine to the file 520 is completed, the HTML file 510
From the confirmed file name storage unit 234, it can be determined that the link destination from the file to the file 520 has been changed to “d8GA0acJX / image.jpg” as described above. Therefore, the link destination is changed to this generated address (S324).

Since the processing for all the links from the HTML file 510 is completed, the file is stored in the storage destination address (38xjlk4QO / image.html) and the routine ends. HTML file 50 which is the top page
The link destination from 0 to the HTML file 510 has a generated address of "38xjlk4QO / image.ht
Since it has been changed to "ml", the link destination is changed to this address (S324).

The HTML file 530 (desc.html) which is another link destination from the file 500 exists, but it is not included in the already confirmed URL, so the file processing routine is called. Since this file does not match any of the storage areas 430 in the setting file 400, it is determined that this file is not a file to be acquired / saved. Therefore, the file processing routine for this file ends. In other words, it is not necessary to change the link destination for this file (desc.html).

Finally, the file is stored in the position indicated by the generated address, and the processing routine ends.
The HTML description shown in FIG. 9 is changed as shown in FIG. Further, the link relationship shown in FIG. 8 is as shown in FIG. Regarding the HTML file 600 (index.html) stored at this point, the HTML file 60
Although the link from 0 to the HTML file 630 is not changed, the link destination to the HTML file 610 is rewritten by the file processing routine.

In this way, the information access conversion unit 22
After performing the process of 0, the configuration of the HTML file group storage unit 214 of the WWW server unit 210 is as shown in FIG. The link structure of the three files in the HTML file group storage unit 214 saved by the information access conversion unit 220 is the same as the link structure in the HTML file group storage unit 212 from which the file was acquired, but an HTML file that displays an image. 5
Random character strings are included in the URLs of 10 and the image file 520. Therefore, the HT that displays the image
It becomes difficult to directly specify the URL for the ML file 510 and the image file 520.

Furthermore, by activating the information access converter 220 at regular time intervals using the timer 260, the HTML file 510 for displaying an image and the URL of the image file 520 can be constantly changed. It becomes more difficult to know the exact URL for the file.

However, the HTML file 500, the HTML file 510, and the file 52 from which the files are acquired
If the URL of 0 is known, the URL can be specified directly in the HTML file and the file. Therefore, in order to ensure security, add the following processing as necessary. Good.

These files (HTML file 50
0, HTML file 510, file 520). That is, these files (HTML file 500, HTML file 510,
The access to the file 520) is restricted to only the access from the information access system, and the information access server 2
It is desirable to deny access from 00 outside.

In the present embodiment, the WWW server is taken as an example, but the information access conversion system is similarly used not only for WWW but also for file servers (for example, FTP) in other services. It is possible to prevent direct access to files. Also,
In the present embodiment, the file in which the link to another file can be extracted is in the HTML format, but the file is not limited to the HTML format as long as the file has a hyperlink to the other file. Furthermore, in the present embodiment, the timer 260 activates the information access conversion unit 220, but the user may activate the information access conversion unit 220.

<Second Embodiment> The second embodiment of the present invention will be described below.
An information access system according to the embodiment will be described. In the following description, the same parts as those in the above-described first embodiment will not be repeated.

FIG. 12 shows the overall configuration of the information access system according to this embodiment. Different from the first embodiment, the information access conversion unit 221 of the information access server 203 does not include a random number generation unit. Further, the address generation unit 228 of the information access conversion unit 203 generates a character string whose storage destination address uniquely corresponds to a time such as a date in the present embodiment.

For example, the address generator 228
As a value that represents time such as date, refer to 2001.11.20.22.39.3
By generating a value of the form "1", it becomes easy to know the generation time from the file name. Furthermore, by generating a hexadecimal value in the format of "3BFA5D13", for example, it is possible to prevent the generation time from being easily guessed.

The setting file stored in the setting file storage unit 250 is described to execute the file acquisition for the information access server 201 different from the information access server 203, and at the time of address generation. The difference is that the address generation rule of is described so as to include a character string that uniquely corresponds to a time such as a date. The information access server 201 is another server different from the information access server 203, and includes a WWW server unit 211.
The WWW server unit 211 uses the HTML file group storage unit 2
Including 12. The information access server 203 includes a WWW server unit 213. The WWW server unit 213 is an HTM
The L file group storage unit 214 is included.

The flow of file saving in this embodiment is the same as the file saving according to the first embodiment. However, since the WWW server 201 that is the file acquisition destination and the WWW server 203 that is the file storage destination are different, the file acquisition unit 224 sends a file acquisition request to the WWW server unit 212 in the information access server 201.

In this way, the information access server that is the file acquisition source and the information access server that is the storage destination can be different devices.

The embodiments disclosed this time are to be considered as illustrative in all points and not restrictive. The scope of the present invention is shown not by the above description but by the claims, and is intended to include meanings equivalent to the claims and all modifications within the scope.

[Brief description of drawings]

FIG. 1 is an overall configuration diagram of an information access system according to a first embodiment of the present invention.

FIG. 2 is an external view of a computer that realizes an information access system.

FIG. 3 is a control block diagram of the computer system shown in FIG.

FIG. 4 is a diagram showing information stored in a confirmed file name storage unit.

FIG. 5 is a diagram showing the contents of a setting file.

FIG. 6 is a flowchart showing a control structure of main processing executed by the information access server according to the first embodiment of the present invention.

7 is a flowchart showing a control structure of the file processing shown in FIG.

FIG. 8 is a diagram showing a link relationship before file processing.

FIG. 9 is a diagram showing the contents of an HTML file before file processing.

FIG. 10 is a diagram showing the contents of an HTML file after file processing.

FIG. 11 is a diagram showing a link relationship after file processing.

FIG. 12 is an overall configuration diagram of an information access system according to a second embodiment of the present invention.

[Explanation of symbols]

100 client computers, 120, 121,
123 network, 200, 201, 203 information access server, 210, 211, 213 WWW server section, 212, 214 HTML file group storage section, 2
20, 221 information access conversion unit, 222 address determination unit, 224 file acquisition unit, 226 random number generation unit,
228 Address generator, 230 Link detection / change /
Recursive execution unit, 232 file storage unit, 234 confirmed file name storage unit, 250 setting file storage unit, 26
0 timer, 300 computer system, 302 computer, 304 monitor, 306 FD drive device,
308 CD-ROM drive, 310 keyboard,
312 mice, 500, 510, 530, 600, 6
10,630 HTML files, 520,620 files.

Claims (10)

[Claims] 1. An acquisition unit for acquiring information requested by a user, a storage unit for storing the information acquired by the acquisition unit, and information acquired on the basis of a preset condition. An information access device comprising: a generation unit configured to generate an address for storing the information; and a control unit configured to control the storage unit to store the information at the address generated by the generation unit. 2. The information access device further includes a random number generating means for generating a random number, and the generating means uses the random number generated by the random number generating means to generate the address. The information access device according to claim 1, comprising: 3. The information access device further includes detection means for detecting date and time, and the generation means includes means for generating the address using the date and time detected by the detection means. The information access device according to claim 1. 4. The generating unit includes a unit for generating an address for storing the acquired information when the storage destination of the information satisfies a preset storage destination. 3. The information access device according to any one of 3 above. 5. The information acquired by the acquisition means is:
Including link information to other information, the information access device, from the information acquired by the acquisition unit, an extraction unit for extracting the link information, the link information extracted by the extraction unit, The information access device according to any one of claims 1 to 4, further comprising conversion means for converting the address in correspondence with the address generated by the generation means. 6. The information access device further includes a set time detecting means for detecting that a preset time has come, and the generating means includes a set time detected by the set time detecting means. The information access device according to any one of claims 1 to 5, further comprising means for generating an address for storing the acquired information when it is detected. 7. An acquisition step of acquiring the information requested by the user, a storage step of storing the information acquired in the acquisition step, and storing the acquired information based on a preset condition. An information access method comprising: a generation step of generating an address; and a control step of controlling the storage step so as to store the information in the address generated in the generation step. 8. The information acquired in the acquisition step includes link information to other information, and the information access method extracts the link information from the information acquired in the acquisition step. The information access method according to claim 7, further comprising a step and a conversion step of converting the link information extracted in the extraction step in association with the address generated in the generation step. 9. A program for realizing the information access method according to claim 7 or 8 by using a computer. 10. A recording medium on which the program according to claim 9 is recorded.