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Manual Reference Pages  -  SHTTPD (1)


shttpd - lightweight web server


See Also


shttpd [options] [config_file] shttpd -A htpasswd_file domain_name user_name password


shttpd is small, fast and easy to use web server with CGI, SSL, Digest Authorization support. It can be run as stand-alone server, be managed by inetd(8) , or be embedded into existing C/C++ application.

shttpd does not detach from terminal, and makes current working directory be the web root, unless -root option is specified.

Unlike other web servers, shttpd does not expect CGI scirpts to be put in a special directory. They may be anywhere. CGI files are recognized by the file extension.

SSI files are also recognized by extension. Currently, the only SSI directives supported are ‘<!--#include "url-encoded-path" -->’ and ‘<!--#exec "program" -->’. The ‘url-encoded-path’ can be relative to shttpd working directory, or absolute system path. In the embedded mode, more directives are available: #call, #if/#elif/#endif/#else/#endif. Unsupported SSI directives are silently ignored.

It is possible to specify multiple ports to listen on. For example, to make shttpd listen on HTTP port 80 and HTTPS port 443, one should start it as 'shttpd -ssl_cert cert.pem -ports 80,443s'

shttpd can use the configuration file. By default, it is "shttpd.conf", and if it is present in the same directory where shttpd lives, the command line options are read from it. Alternatively, the configuration file may be specified as a last argument. The format of the configuration file is exactly the same as for the command line options, the only difference is that the command line options must be specified on separate lines, and leading dashes for option names must be omitted. Lines beginning with ’#’ are regarded as comments and ignored.


-A htpasswd_file domain_name user_name password
  Add/edit user’s password in the passwords file. Deleting users can be done with any text editor. Functionality similar to Apache’s htdigest utility.
-access_log file
  Access log file. Default: not set, no logging is done.
-acl (+|-)x.x.x.x[/x],...
  Specify access control list (ACL). ACL is a comma separated list of IP subnets, each subnet is prepended by ’-’ or ’+’ sign. Plus means allow, minus means deny. If subnet mask is omitted, like "-", then it means single IP address. Mask may vary from 0 to 32 inclusive. Default: not set, allow all.
-aliases list
  This options gives an ability to serve the directories outside web root by sort of symbolic linking to certain URI. The list must be comma-separated list of URI=PATH pairs, like this: "/etc/=/my_etc,/tmp=/my_tmp". Default: not set.
-auth_PUT file
  PUT and DELETE passwords file. This must be specified if PUT or DELETE methods are used. Default: not set.
-auth_gpass file
  Location of global passwords file. When set, per-directory .htpasswd files are ignored, and all accessed must be authorised against global passwords file. Default: not set.
-auth_realm domain_name
  Authorization realm. Default: "".
-cfg_uri uri
  If set, shttpd creates special administrative URI where options may be changed at runtime. This URI probably wants to be password-protected, look at -protect option, and in the EXAMPLES section on how to do it. Default: not set.
-cgi_env list
  Pass environment variables to the CGI script in addition to standard ones. The list must be comma-separated list of X=Y pairs, like this: "VARIABLE1=VALUE1,VARIABLE2=VALUE2". Default: not set.
-cgi_ext list
  Comma-separated list of CGI extensions. All files having these extensions are treated as CGI scripts. Default: "cgi,pl,php"
-cgi_interp file
  Force file to be a CGI interpreter for all CGI scripts. By default this option is not set, and shttpd decides which interpreter to use by looking at the first line of CGI script.
-dir_list yes|no
  Enable/disable directory listing. Default: "1" (enabled).
-error_log file
  Error log file. Default: not set, no errors are logged.
-inetd yes|no
  Enable/disable inetd mode. Default: "0" (disabled).
-mime_types list
  Additional to builtin mime types, in form "EXTENSION1=TYPE1,EXTENSION2=TYPE2".
-ports port_list
  Comma-separated list of ports to listen on. If the port is SSL, a letter ’s’ must be appeneded, for example, "80,443s" will open port 80 and port 443, and connections on port 443 will be SSL-ed. Default: 80
-protect list
  Comma separated list of URI=PATH pairs, specifying that given URIs must the protected with respected password files. Default: not set.
-root directory
  Location of the WWW root directory. Default: working directory from which shttpd has been started.
-ssi_ext list
  Comma separated list of SSI extensions. Default: "shtml,shtm".
-ssl_cert pem_file
  Location of SSL certificate file. Default: not set.
-systray yes|no
  Hide console and put an icon on system tray (Windows only). Default: no.
-threads num_threads
  Number of worker threads. If 1, no threads are spawned, and shttpd operates as single threaded program. Default: 1.
-uid login
  Switch to given user after startup. Default: not set.


shttpd can be built as a library to embed web server functionality into C/C++ application. The API functions are declared in a header file shttpd.h. Please refer to the source package for a header file and the examples.


-root /var/www-ports 8080,8043s-ssl_cert /etc/cert.pem-aliases /aa=/tmp,/bb=/etc
  Start listening on port 8080 for HTTP, and 8043 for HTTPS connections. Use /etc/cert.pem as SSL certificate file. Web root is /var/www. In addition, map directory /tmp to URI /aa, directory /etc to URI /bb.
-acl -,+,+
  Deny connections from everywhere, allow only IP address and all IP addresses from subnet to connect.
-ports 8080-cfg_uri /ctl-protect /ctl=/tmp/passwords.txt
  Start listening on port 8080, create an administrative URI "/ctl" where options may be changed at runtime, and protect that URI with authorization.
http stream tcp nowait nobody /bin/shttpd shttpd -inetd 1 -root /var/www
  This line in /etc/inetd.conf makes shttpd run by inetd(8) daemon.




shttpd is licensed under the terms of beerware license.


.An Sergey Lyubka Aq .
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