SIV opertation

Job Description:

in this project, you will implement a very simple system integrity verifier (SIV) for a Linux

system. The goal of the SIV is to detect file system modifications occurring within a directory

tree. The SIV outputs statistics and warnings about changes to a report file specified by the

user.

The SIV can be run either in initialization mode or in verification mode.

In initialization mode, the SIV program requires the user to enter a path to a monitored

directory, another path to a verification file (outside the monitored directory), a third path

to a report file and a hash function (e.g., the SIV must support at least MD-5 and SHA-1

message digests). The program will do the following:

a) Verify that the specified monitored directory exists

b) Verify that the specified location of the verification file and the report file are outside

the monitored directory

c) Verify that the specified hash function is supported by your SIV

d) If the verification file and/or report file exists already then they will be overwritten.

e) Recursively iterate through the directory contents (of arbitrary depth level) and for

each file/directory found record the following information in the verification file (it is

up to you decide the format used to store records in the verification file):

I. Full path to file/directory, including filename

II. Size of the file

III. Name of user owning the file/directory

IV. Name of group owning the file/directory

V. Access rights to the file/directory (either octal or symbolic)

VI. Last modification date

VII. Computed message digest with specified hash function over file contents

f) Write to the report file (this must be a text file) a summary of your findings:

I. Full pathname to monitored directory

II. Full pathname to verification file

III. Number of directories parsed

IV. Number of files parsed

V. Time to complete the initialization mode

Verification mode In verification mode, the user provides the path of the verification file and a path to a report

file. The program will do the following:

a) Verify that the specified verification file exists and, if true, begin parsing the file

b) Verify that the specified verification file is outside the monitored directory

c) Verify that the specified report file is outside the monitored directory

d) If the report file exists already then it shall be overwritten by the new report.

e) Recursively iterate through the directory contents (of arbitrary depth level) and

verify that it matches exactly the information from the verification file. A warning

must be printed to the report file for each entry that diverges from the records in the

verification file, along with information about what is different:

I. New or removed files/directories

II. Files with a different size than recorded (show old size and new size)

III. Files with a different message digest than computed before (show old digest

and new digest)

IV. Files/directories with a different user/group (show old user/group and new

user/group)

V. Files/directories with modified access rights (show old access rights and new

access rights)

VI. Files/directories with a different modification date (show old modification

date and new modification date)

f) Write to the report file (this must be a text file) a summary of your findings

I. Full pathname to monitored directory

II. Full pathname to verification file

III. Full pathname to report file

IV. Number of directories parsed

V. Number of files parsed

VI. Number of warning issued

VII. Time to complete the verification mode

The program is not allowed to change the verification file when executing in verification

mode.

For more details text me

Taidot: Linux, C-ohjelmointi, C++ -ohjelmointi, Tietojärjestelmäarkkitehtuuri, Python

Projektin tunnus: #36213540