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git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@159109 13f79535-47bb-0310-9956-ffa450edef68
170 lines
7.4 KiB
Groff
170 lines
7.4 KiB
Groff
.\" XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
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.\" DO NOT EDIT! Generated from XML source.
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.\" XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
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.de Sh \" Subsection
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.br
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.if t .Sp
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.ne 5
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.PP
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\fB\\$1\fR
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.PP
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..
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.de Sp \" Vertical space (when we can't use .PP)
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.if t .sp .5v
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.if n .sp
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..
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.ie \\n(.$>=3 .ne \\$3
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.el .ne 3
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..
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.TH "HTDBM" 1 "2005-03-26" "Apache HTTP Server" "htdbm"
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.SH NAME
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htdbm \- Manipulate DBM password databases
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.SH "SYNOPSIS"
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.PP
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\fBhtdbm\fR [ -\fBT\fR\fIDBTYPE\fR ] [ -\fBc\fR ] [ -\fBm\fR | -\fBd\fR | -\fBp\fR | -\fBs\fR ] [ -\fBt\fR ] [ -\fBv\fR ] [ -\fBx\fR ] \fIfilename\fR \fIusername\fR
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.PP
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\fBhtdbm\fR -\fBb\fR [ -\fBT\fR\fIDBTYPE\fR ] [ -\fBc\fR ] [ -\fBm\fR | -\fBd\fR | -\fBp\fR | -\fBs\fR ] [ -\fBt\fR ] [ -\fBv\fR ] \fIfilename\fR \fIusername\fR \fIpassword\fR
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.PP
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\fBhtdbm\fR -\fBn\fR [ -\fBc\fR ] [ -\fBm\fR | -\fBd\fR | -\fBp\fR | -\fBs\fR ] [ -\fBt\fR ] [ -\fBv\fR ] \fIusername\fR
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.PP
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\fBhtdbm\fR -\fBnb\fR [ -\fBc\fR ] [ -\fBm\fR | -\fBd\fR | -\fBp\fR | -\fBs\fR ] [ -\fBt\fR ] [ -\fBv\fR ] \fIusername\fR \fIpassword\fR
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.PP
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\fBhtdbm\fR -\fBv\fR [ -\fBT\fR\fIDBTYPE\fR ] [ -\fBc\fR ] [ -\fBm\fR | -\fBd\fR | -\fBp\fR | -\fBs\fR ] [ -\fBt\fR ] [ -\fBv\fR ] \fIfilename\fR \fIusername\fR
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.PP
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\fBhtdbm\fR -\fBvb\fR [ -\fBT\fR\fIDBTYPE\fR ] [ -\fBc\fR ] [ -\fBm\fR | -\fBd\fR | -\fBp\fR | -\fBs\fR ] [ -\fBt\fR ] [ -\fBv\fR ] \fIfilename\fR \fIusername\fR \fIpassword\fR
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.PP
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\fBhtdbm\fR -\fBx\fR [ -\fBT\fR\fIDBTYPE\fR ] [ -\fBm\fR | -\fBd\fR | -\fBp\fR | -\fBs\fR ] \fIfilename\fR \fIusername\fR
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.PP
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\fBhtdbm\fR -\fBl\fR [ -\fBT\fR\fIDBTYPE\fR ]
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.SH "SUMMARY"
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.PP
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htdbm is used to manipulate the DBM format files used to store usernames and password for basic authentication of HTTP users via mod_auth_dbm\&. See the dbmmanage documentation for more information about these DBM files\&.
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.SH "OPTIONS"
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.TP
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-b
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Use batch mode; \fIi\&.e\&.\fR, get the password from the command line rather than prompting for it\&. This option should be used with extreme care, since \fBthe password is clearly visible\fR on the command line\&.
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.TP
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-c
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Create the \fIpasswdfile\fR\&. If \fIpasswdfile\fR already exists, it is rewritten and truncated\&. This option cannot be combined with the -n option\&.
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.TP
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-n
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Display the results on standard output rather than updating a database\&. This option changes the syntax of the command line, since the \fIpasswdfile\fR argument (usually the first one) is omitted\&. It cannot be combined with the -c option\&.
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.TP
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-m
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Use MD5 encryption for passwords\&. On Windows, Netware and TPF, this is the default\&.
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.TP
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-d
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Use crypt() encryption for passwords\&. The default on all platforms but Windows, Netware and TPF\&. Though possibly supported by htdbm on all platforms, it is not supported by the httpd server on Windows, Netware and TPF\&.
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.TP
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-s
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Use SHA encryption for passwords\&. Facilitates migration from/to Netscape servers using the LDAP Directory Interchange Format (ldif)\&.
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.TP
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-p
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Use plaintext passwords\&. Though htdbm will support creation on all platforms, the httpd daemon will only accept plain text passwords on Windows, Netware and TPF\&.
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.TP
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-l
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Print each of the usernames and comments from the database on stdout\&.
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.TP
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-t
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Interpret the final parameter as a comment\&. When this option is specified, an additional string can be appended to the command line; this string will be stored in the "Comment" field of the database, associated with the specified username\&.
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.TP
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-v
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Verify the username and password\&. The program will print a message indicating whether the supplied password is valid\&. If the password is invalid, the program exits with error code 3\&.
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.TP
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-x
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Delete user\&. If the username exists in the specified DBM file, it will be deleted\&.
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.TP
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\fIfilename\fR
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The filename of the DBM format file\&. Usually without the extension \&.db, \&.pag, or \&.dir\&. If -c is given, the DBM file is created if it does not already exist, or updated if it does exist\&.
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.TP
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\fIusername\fR
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The username to create or update in \fIpasswdfile\fR\&. If \fIusername\fR does not exist in this file, an entry is added\&. If it does exist, the password is changed\&.
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.TP
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\fIpassword\fR
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The plaintext password to be encrypted and stored in the DBM file\&. Used only with the -b flag\&.
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.TP
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-T\fIDBTYPE\fR
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Type of DBM file (SDBM, GDBM, DB, or "default")\&.
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.SH "BUGS"
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.PP
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One should be aware that there are a number of different DBM file formats in existence, and with all likelihood, libraries for more than one format may exist on your system\&. The three primary examples are SDBM, NDBM, GNU GDBM, and Berkeley/Sleepycat DB 2/3/4\&. Unfortunately, all these libraries use different file formats, and you must make sure that the file format used by \fIfilename\fR is the same format that htdbm expects to see\&. htdbm currently has no way of determining what type of DBM file it is looking at\&. If used against the wrong format, will simply return nothing, or may create a different DBM file with a different name, or at worst, it may corrupt the DBM file if you were attempting to write to it\&.
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.PP
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One can usually use the file program supplied with most Unix systems to see what format a DBM file is in\&.
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.SH "EXIT STATUS"
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.PP
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htdbm returns a zero status ("true") if the username and password have been successfully added or updated in the DBM File\&. htdbm returns 1 if it encounters some problem accessing files, 2 if there was a syntax problem with the command line, 3 if the password was entered interactively and the verification entry didn't match, 4 if its operation was interrupted, 5 if a value is too long (username, filename, password, or final computed record), 6 if the username contains illegal characters (see the Restrictions section), and 7 if the file is not a valid DBM password file\&.
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.SH "EXAMPLES"
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.nf
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htdbm /usr/local/etc/apache/\&.htdbm-users jsmith
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.fi
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.PP
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Adds or modifies the password for user jsmith\&. The user is prompted for the password\&. If executed on a Windows system, the password will be encrypted using the modified Apache MD5 algorithm; otherwise, the system's crypt() routine will be used\&. If the file does not exist, htdbm will do nothing except return an error\&.
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.nf
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htdbm -c /home/doe/public_html/\&.htdbm jane
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.fi
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.PP
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Creates a new file and stores a record in it for user jane\&. The user is prompted for the password\&. If the file exists and cannot be read, or cannot be written, it is not altered and htdbm will display a message and return an error status\&.
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.nf
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htdbm -mb /usr/web/\&.htdbm-all jones Pwd4Steve
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.fi
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.PP
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Encrypts the password from the command line (Pwd4Steve) using the MD5 algorithm, and stores it in the specified file\&.
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.SH "SECURITY CONSIDERATIONS"
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.PP
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Web password files such as those managed by htdbm should \fInot\fR be within the Web server's URI space -- that is, they should not be fetchable with a browser\&.
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.PP
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The use of the -b option is discouraged, since when it is used the unencrypted password appears on the command line\&.
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.SH "RESTRICTIONS"
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.PP
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On the Windows and MPE platforms, passwords encrypted with htdbm are limited to no more than 255 characters in length\&. Longer passwords will be truncated to 255 characters\&.
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.PP
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The MD5 algorithm used by htdbm is specific to the Apache software; passwords encrypted using it will not be usable with other Web servers\&.
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.PP
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Usernames are limited to 255 bytes and may not include the character :\&.
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