Changes between Version 1 and Version 2 of Trac Cgi


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Timestamp:
02/06/14 20:46:04 (4 years ago)
Author:
trac
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  • Trac Cgi

    v1 v2  
    11= Installing Trac as CGI = 
    22 
    3 To install Trac as a CGI script, you need to make the `trac.cgi` executable as a CGI by your web server. 
     3{{{ 
     4#!div class=important 
     5  ''Please note that using Trac via CGI is the slowest deployment method available. It is slower than [TracModPython mod_python], [TracFastCgi FastCGI] and even [trac:TracOnWindowsIisAjp IIS/AJP] on Windows.'' 
     6}}} 
    47 
    5   ''Please note that using Trac via CGI is significantly slower than any other deployment method, such as [TracModPython mod_python] or [TracFastCgi FastCGI].'' 
     8CGI script is the entrypoint that web-server calls when a web-request to an application is made. To generate the `trac.cgi` script run: 
     9{{{ 
     10trac-admin /path/to/env deploy /path/to/www/trac 
     11}}} 
     12`trac.cgi` will be in the `cgi-bin` folder inside the given path. ''Make sure it is executable by your web server''. This command also copies `static resource` files to a `htdocs` directory of a given destination. 
    613 
    7 If you're using [http://httpd.apache.org/ Apache HTTPD], there are a couple ways to do that: 
     14== Apache web-server configuration == 
    815 
    9  1. Use a `ScriptAlias` to map a URL to the `trac.cgi` script 
     16In [http://httpd.apache.org/ Apache] there are two ways to run Trac as CGI: 
     17 
     18 1. Use a `ScriptAlias` directive that maps an URL to the `trac.cgi` script (recommended) 
    1019 2. Copy the `trac.cgi` file into the directory for CGI executables used by your web server (commonly named `cgi-bin`). You can also create a symbolic link, but in that case make sure that the `FollowSymLinks` option is enabled for the `cgi-bin` directory. 
    1120 
    12 The first option is recommended as it also allows you to map the CGI to a friendly URL. 
    13  
    14 Now, edit the Apache configuration file and add this snippet, file names and locations changed to match your installation: 
     21To make Trac available at `http://yourhost.example.org/trac` add `ScriptAlias` directive to Apache configuration file, changing `trac.cgi` path to match your installation: 
    1522{{{ 
    16 ScriptAlias /trac /usr/share/trac/cgi-bin/trac.cgi 
     23ScriptAlias /trac /path/to/www/trac/cgi-bin/trac.cgi 
    1724}}} 
    1825 
    19  ''Note that this directive requires the `mod_alias` module to be installed and enabled.'' 
     26 ''Note that this directive requires enabled `mod_alias` module.'' 
    2027 
    2128If you're using Trac with a single project you need to set its location using the `TRAC_ENV` environment variable: 
     
    3340}}} 
    3441 
    35  ''Note that the `SetEnv` directive requires the `mod_env` module to be installed and enable.'' 
     42 ''Note that the `SetEnv` directive requires enabled `mod_env` module. It is also possible to set TRAC_ENV in trac.cgi. Just add the following code between "try:" and "from trac.web ...":'' 
    3643 
    37 This will make Trac available at `http://yourhost.example.org/trac`. 
     44{{{ 
     45    import os 
     46    os.environ['TRAC_ENV'] = "/path/to/projectenv" 
     47}}} 
     48 
     49 '' Or for TRAC_ENV_PARENT_DIR: '' 
     50 
     51{{{ 
     52    import os 
     53    os.environ['TRAC_ENV_PARENT_DIR'] = "/path/to/project/parent/dir" 
     54}}} 
    3855 
    3956If you are using the [http://httpd.apache.org/docs/suexec.html Apache suEXEC] feature please see [http://trac.edgewall.org/wiki/ApacheSuexec]. 
     
    4158On some systems, you ''may'' need to edit the shebang line in the `trac.cgi` file to point to your real Python installation path. On a Windows system you may need to configure Windows to know how to execute a .cgi file (Explorer -> Tools -> Folder Options -> File Types -> CGI). 
    4259 
     60=== Using WSGI === 
     61 
     62You can run a [http://henry.precheur.org/python/how_to_serve_cgi WSGI handler] [http://pythonweb.org/projects/webmodules/doc/0.5.3/html_multipage/lib/example-webserver-web-wsgi-simple-cgi.html under CGI].  You can [wiki:TracModWSGI#Thetrac.wsgiscript write your own application function], or use the deployed trac.wsgi's application. 
     63 
    4364== Mapping Static Resources == 
    4465 
    45 Out of the box, Trac will serve static resources such as style sheets or images itself. For a CGI setup, though, this is highly undesirable, because it results in the CGI script being invoked for documents that could be much more efficiently served by the web server directly. 
    46  
    47 Web servers such as [http://httpd.apache.org/ Apache HTTPD] allow you to create “Aliases” to resources, thereby giving them a virtual URL that doesn't necessarily bear any resemblance to the layout of the servers file system. We already used this capability above when defining a `ScriptAlias` for the CGI script, and we'll use it now to map requests to the static resources to the directory on the file system that contains them, thereby bypassing the processing of such requests by the CGI script. 
    48  
    49 Edit the Apache configuration file again and add the following snippet '''before''' the `ScriptAlias` for the CGI script , file names and locations changed to match your installation: 
    50 {{{ 
    51 Alias /trac/chrome/common /usr/share/trac/htdocs 
    52 <Directory "/usr/share/trac/htdocs"> 
    53   Order allow,deny 
    54   Allow from all 
    55 </Directory> 
    56 }}} 
    57  
    58 Note that whatever URL path you mapped the `trac.cgi` script to, the path `/chrome/common` is the path you have to append to that location to intercept requests to the static resources.  
    59  
    60 For example, if Trac is mapped to `/cgi-bin/trac.cgi` on your server, the URL of the Alias should be `/cgi-bin/trac.cgi/chrome/common`. 
    61  
    62 Alternatively, you can set the `htdocs_location` configuration option in [wiki:TracIni trac.ini]: 
    63 {{{ 
    64 [trac] 
    65 htdocs_location = /trac-htdocs 
    66 }}} 
    67  
    68 Trac will then use this URL when embedding static resources into HTML pages. Of course, you still need to make the Trac `htdocs` directory available through the web server at the specified URL, for example by copying (or linking) the directory into the document root of the web server: 
    69 {{{ 
    70 $ ln -s /usr/share/trac/htdocs /var/www/your_site.com/htdocs/trac-htdocs 
    71 }}} 
     66See TracInstall#MappingStaticResources. 
    7267 
    7368== Adding Authentication == 
    7469 
    75 The simplest way to enable authentication with Apache is to create a password file. Use the `htpasswd` program to create the password file: 
    76 {{{ 
    77 $ htpasswd -c /somewhere/trac.htpasswd admin 
    78 New password: <type password> 
    79 Re-type new password: <type password again> 
    80 Adding password for user admin 
    81 }}} 
    82  
    83 After the first user, you dont need the "-c" option anymore: 
    84 {{{ 
    85 $ htpasswd /somewhere/trac.htpasswd john 
    86 New password: <type password> 
    87 Re-type new password: <type password again> 
    88 Adding password for user john 
    89 }}} 
    90  
    91   ''See the man page for `htpasswd` for full documentation.'' 
    92  
    93 After you've created the users, you can set their permissions using TracPermissions. 
    94  
    95 Now, you'll need to enable authentication against the password file in the Apache configuration: 
    96 {{{ 
    97 <Location "/trac/login"> 
    98   AuthType Basic 
    99   AuthName "Trac" 
    100   AuthUserFile /somewhere/trac.htpasswd 
    101   Require valid-user 
    102 </Location> 
    103 }}} 
    104  
    105 If you're hosting multiple projects you can use the same password file for all of them: 
    106 {{{ 
    107 <LocationMatch "/trac/[^/]+/login"> 
    108   AuthType Basic 
    109   AuthName "Trac" 
    110   AuthUserFile /somewhere/trac.htpasswd 
    111   Require valid-user 
    112 </LocationMatch> 
    113 }}} 
    114  
    115 For better security, it is recommended that you either enable SSL or at least use the “Digest” authentication scheme instead of “Basic”. Please read the [http://httpd.apache.org/docs/2.0/ Apache HTTPD documentation] to find out more. 
     70See TracInstall#ConfiguringAuthentication. 
    11671 
    11772---- 
    118 See also:  TracGuide, TracInstall, TracFastCgi, TracModPython 
     73See also:  TracGuide, TracInstall, [wiki:TracModWSGI], TracFastCgi, TracModPython