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The Windows version of Xitami provides a simple control panel that lets you start, stop, and monitor the web server. The service version is easily installed as an NT service, or can be run as a command-line program. It then accepts the command-line switches described later.
Under UNIX, Xitami can run as a foreground process or a daemon. You can run it interactively to test your configuration, and then configure your system inittab or start-up scripts to run it automatically.
This is the command-line syntax for Xitami:
Syntax: xitami [options...] Options: -r directory Root directory for web pages (webpages). -c directory Directory for CGI programs (cgi-bin). -b portbase Shift HTTP port 80 by this value. E.g. to run Xitami on port 7080, do 'xitami -b 7000'. -l filename Log file for output (xitami.log). -a filename Authentication file (xitami.aut). -q Quite mode: no messages or log. -s Server mode: run as background job. -t Trace all socket i/o operations to log file. -v Show Xitami version information. -h Show summary of command-line options.
The -s option has no effect on Windows systems; under UNIX it does the following: Xitami recreates itself as a background process, ignoring the SIGHUP signal.
Run Xitami as described in the installation section. Connect with a browser to the URL: http://hostname/ or http://hostname:5080/. If Xitami is correctly installed, you should see a page entitled: "Welcome To Xitami". Please read this page and try the various links and buttons to ensure that Xitami is working correctly. If you install your own web pages, you can still access the Xitami Welcome page by using the URL: http://hostname/default.htm.
These options can be changed. The webpages directory can be any relative (depending on the directory where Xitami is run) or absolute directory (with a full path name).
The cgi-bin directory can be specified in various ways - see the section on CGI programming in Xitami.
Xitami will negotiate with the web browser to find a file when the URL does not specify a filename. It will search for an HTML file called index.htm, index.html, default.htm, or default.html, in that order. If none of these files are found, Xitami returns the directory listing, formatted as an HTML page. Note that Xitami automatically looks for files with an extension .html if a file with the .htm extension could not be found, and vice-versa.
You should install a file called 'index.htm' in the webpages directory, to override the 'default.htm' file used by Xitami.
Xitami supports the HTTP/1.0 Basic Authentication protocol. This is a minimalistic security approach that is quick and supported by all browsers, but which should not be used for very sensitive data, since the user name and password can be extracted from the TCP/IP packets sent by the browser.
The xitami.aut file holds the authentication information. This file is not encoded, but is not accessible by browsers unless you place it in the webpages directory. You can modify this file on the fly; Xitami will reload it after a short delay (the server:refresh option).
Protection is applied to directories or individual URLs. This is what an authentication file looks like:
# Authorization file for XITAMI # Each [Entry] defines a protected URL or directory. # The directory name is followed by user=password pairs # [/Admin] admin=top secret realm=On-Line Administration [stats/index.htm] root=PakYupTon admin=QzeCat96 webmask=local [/private] jacky="funny;password" sarah=arabica jonas=realtime
Each section name specifies an URI or a directory name; the leading slash is optional. When checking a resource called "/pub/mypages/file", Xitami will look for entries in this order:
[/pub/mypages/file] [pub/mypages/file] [/pub/mypages] [pub/mypages] [/pub] [pub] [/]
The directory or URL name is not case-sensitive; Xitami always treats it as lower-case. On systems where filenames are case-sensitive, "PRIVATE" and "private" are treated as equal by Xitami, and are both handled by the authentication data for [Private]. The user name is also case-insensitive. The password is case-insensitive if the option security:password-case is set to 0.
Passwords can contain any printable character except ' and ". If you edit or create the password file by hand or using scripts, use double quotes around passwords to make sure that special characters like ; and # (which indicate comments) are treated as part of the password.
The entry 'webmask=' is treated in a special manner; this defines the set of valid IP addresses for clients trying to access the directory. The section on webmasks provides more details. If you define an entry consisting only of 'webmask=', Xitami will treat this as a resource that is protected (has an entry) but has no valid users.
The entry 'realm=' is also treated in a special manner; this defines the 'Realm' for the authentication. The realm is returned to the browser, and is the basis upon which it will remember user names and passwords. If you use the same realm for several directories or URLs, make sure that the user names and passwords also match. If no realm is defined, Xitami returns the [Entry] name as the realm.
The entry 'http-update=' is used to determine whether the HTTP PUT, COPY, MOVE, and DELETE methods are allowed for the URL. By default these are not permitted. To allow them, add 'http-update=1' to the authorisation file.
A password "-" is treated as meaning 'not allowed' for that user. If there is only one user defined, the resource will be inaccessible. This is used, for example, in the default xitami.aut file to indicate that the administration URL '/admin' is not accessibly until a non-default password has been entered. An empty password is treated as meaning 'non required' for that user.
The entry 'all=*' allows access to all users without a user id/password check. You can combine this with the webmask option to restrict access by webmask without requiring user id/password entry at the same time.
Xitami logs errors and information to the file 'xitami.log'. This file is always opened in append mode. It looks something like this:
96/12/05 20:19:41: I: OPEN port=80 96/12/06 07:22:03: I: OPEN port=80To configure the server log, see the [Serverlog] configuration entry.
By default, Xitami logs all HTTP requests to the file 'access.log', which follows the common CERN/NCSA standard for web server log files. The log file format consists of lines in this format:
host - user [DD/Mon/YYYY:hh:mm:ss] "request" ddd bbbb "referer" "agent"
|This field:||Has this purpose:|
|host||IP number of requesting host|
|user||Userid sent for authentication, or -|
|request||HTTP request sent by client|
|ddd||Status code returned by server|
|bbbb||Size of data sent, excluding HTTP header|
|referer||Referer document, or ""|
|agent||User agent (browser), or ""|
The access log files are automatically cycled: when Xitami starts, it will save any existing file before starting a new access log. The old access log file is given a name based on the date when it was last modified.
Xitami has an extended logging function that is much richer than the standard access logging function. The extended logging function gives you more control over the way that log files are cycled, over the log file names, and over the log file format. The extended logging function also does reverse-DNS translation of IP addresses. The extended logging function works with access logs and error logs, and is controlled by a number of additional configuration options in the [ServerLog], [AccessLog], [ErrorLog], [FTPLog], and [FTPErrLog] sections:
|Symbol:||Expands to give:|
|$(client)||client address, as translated string|
|$(ipcli)||client address, as dotted number|
|$(ipsrv)||server address, as dotted number|
|$(request)||request line (HTTP only)|
|$(query)||query string, if any (HTTP only)|
|$(method)||HTTP method or FTP command|
|$(status)||response code, 3 digits|
|$(recd)||request size, in bytes|
|$(sent)||response size, in bytes|
|$(time_ms)||request duration, in msecs|
|$(time_s)||request duration, in seconds (n.nnn)|
|$(file)||filename to which request was translated|
|$(agent)||HTTP user agent (browser name)|
|$(referer)||HTTP referer field|
|$(user)||user name, if any, else -|
|$(service)||name of service (HTTP, FTP)|
|$(vhost)||virtual host name, if any, else -|
|$(datetime)||date/time in NCSA format|
|$(yy)||year as two digits|
|$(year)||year as four digits|
|$(hh)||hour, using 24-hour clock|
|$(XXX)||environment variable XXX (XXX is in uppercase)|
|CLF||Common-log format, as used by the NCSA httpd server.
$(client) - $(user) [$(datetime)] "$(request)" $(status) $(sent)
|CLFX||Extended CLF, as used by Apache and Xitami.
$(client) - $(user) [$(datetime)] "$(request)" $(status) $(sent) "$(referer)" "$(agent)"
|MS||Microsoft IIS format.
$(client), $(user), $(mon)/$(day)/$(year), $(hh):$(mm):$(ss), $(service), Xitami, $(ipsrv), $(stime), $(recd), $(sent), $(status), 0, $(method), $(file)
|LML||iMatix Logfile Markup Language, an XML format.
<LOG DATE="$(datetime)" CLIENT="$(client)" REQUEST="$(request)" METHOD="$(method)" STATUS="$(status)" SENT="$(sent)" FILENAME="$(file)" USERNAME="$(user)" SERVICE="$(service)" />
|XLML||iMatix Extended LML, a richer XML format.
<LOG DATE="$(datetime)" CLIENT="$(client)" CLIENTIP="$(ipcli)" SERVERIP="$(ipsrv)" REQUEST="$(request)" METHOD="$(method)" STATUS="$(status)" RECEIVED="$(recd)" SENT="$(sent)" DURATION="$(time_ms)" FILENAME="$(file)" USERAGENT="$(agent)" REFERER="$(referer)" USERNAME="$(user)" SERVICE="$(service)" VHOST="$(vhost)" />
Note that the XML-based format are easy to work with using the GSLgen tool from imatix.com. GSLgen lets you create arbitrary reports, statistics, and HTML analyses of access log data.
|Cycle-how:||Uses argument like this:|
|Rename||As time-stamped filename.|
|Delete||Does not use argument.|
|Move||As target directory name.|
|Concat||As time-stamped filename.|
|Process||As time-stamped command to execute.|
|Symbol:||Expands to give this:|
|%y||day of year, 001-366|
|%yy||year 2 digits, 00-99|
|%yyyy||year 4 digits, 0100-9999|
|%ddd||day of week, Sun|
|%dddd||day of week, Sunday|
|%DDD||day of week, SUN|
|%DDDD||day of week, SUNDAY|
|%w||day of week, 1-7 (1=Sunday)|
|%ww||week of year, 01-53|
|%q||year quarter, 1-4|
|%%||literal character %|
Xitami accepts the HTTP Accept-Language field and tries to do something useful with it. Not all browsers let you set this field, but some do. This field lets users specify their preferences for particular versions of documents. For instance, if a user specifies that they prefer documents in French, then English, the Accept-Language field will contain "fr, en". Xitami handles this as follows, for a document URL "file.htm":
The same applies to default pages and to CGI scripts, and filters. Note that Xitami will only do the extra checking for alternative htm/html files for .htm and .html files.
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| Welcome To Xitami | Table Of Contents | Installing Xitami | Administration | Configuration | Using The Common Gateway Interface (CGI) | Using SSI and Filters | Image Maps | Virtual Hosts | The FTP Service | A Beginner's Guide | Writing Web Server Extension (WSX) Agents | Extending Xitami with External Peer Processes | FAQ | Technical Implementation | Getting Support | Release History | License Agreement
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