# Structure Mosmlcgi

Identifier index | Structure index
--- | ---

    (* Mosmlcgi -- support for writing CGI scripts in Moscow ML *)

    (* 1. Accessing the fields or parameters of a CGI call *)

    val cgi_fieldnames     : string list
    val cgi_field_strings  : string -> string list;
    val cgi_field_string   : string -> string option;
    val cgi_field_integer  : string * int -> int;

    (* 2. Accessing parts in multipart/form-data; form-based file upload *)

    val cgi_partnames      : string list

    type part
    val cgi_part           : string -> part option
    val cgi_parts          : string -> part list

    val part_fieldnames    : part -> string list
    val part_type          : part -> string option
    val part_data          : part -> string
    val part_field_strings : part -> string -> string list
    val part_field_string  : part -> string -> string option
    val part_field_integer : part -> string * int -> int

    (* 3. Administrative information *)

    val cgi_server_software       : string option
    val cgi_server_name           : string option
    val cgi_gateway_interface     : string option
    val cgi_server_protocol       : string option
    val cgi_server_port           : string option
    val cgi_request_method        : string option
    val cgi_http_accept           : string option
    val cgi_http_user_agent       : string option
    val cgi_http_referer          : string option
    val cgi_path_info             : string option
    val cgi_path_translated       : string option
    val cgi_script_name           : string option
    val cgi_query_string          : string option
    val cgi_remote_host           : string option
    val cgi_remote_addr           : string option
    val cgi_remote_user           : string option
    val cgi_remote_ident          : string option
    val cgi_auth_type             : string option
    val cgi_content_type          : string option
    val cgi_content_length        : string option
    val cgi_annotation_server     : string option

    val cgi_http_cookie           : string option
    val cgi_http_forwarded        : string option
    val cgi_http_host             : string option
    val cgi_http_proxy_connection : string option
    val cgi_script_filename       : string option
    val cgi_document_root         : string option
    val cgi_server_admin          : string option
    val cgi_api_version           : string option
    val cgi_the_request           : string option
    val cgi_request_uri           : string option
    val cgi_request_filename      : string option
    val cgi_is_subreq             : string option

    (*
       The Mosmlcgi library is for writing CGI programs in Moscow ML.  A
       CGI program may be installed on a WWW server and is invoked in
       response to HTTP requests sent to the server from a web browser,
       typically from an HTML FORM element.

       1. Obtaining field values sent from an ordinary HTML form
       ---------------------------------------------------------

       [cgi_fieldnames] is a list of the names of fields present in the
       CGI call message.  If field name fnm is in cgi_fieldnames, then
       cgi_field_string fnm <> NONE.

       [cgi_field_strings fnm] is a (possibly empty) list of the strings
       bound to field fnm.

       [cgi_field_string fnm] returns SOME(s) where s is a string bound to
       field name fnm, if any; otherwise NONE.  Equivalent to
            case cgi_field_strings fnm of
                 []     => NONE
               | s :: _ => SOME s

       [cgi_field_integer (fnm, deflt)] attempts to parse an integer from
       field fnm.  Returns i if cgi_field_string(fnm) = SOME(s) and an
       integer i can be parsed from a prefix of s; otherwise returns deflt.

       2. Obtaining field values sent with ENCTYPE="multipart/form-data"
       -----------------------------------------------------------------

       [cgi_partnames] is a list of the names of the parts of the
       multipart/form-data message.

       The type part is the abstract type of parts of a message.  Each part
       may have several fields.  In this implementation, the field of a
       part cannot be a another part itself.

       [cgi_parts pnm] is a (possibly empty) list of the parts called pnm.

       [cgi_part pnm] is SOME(prt) where prt is a part called pnm, if any;
       otherwise NONE.  Equivalent to
            case cgi_parts pnm of
                 []       => NONE
               | prt :: _ => SOME prt

       [part_fieldnames prt] is the list of field names in part pnm.

       [part_type prt] is SOME(typ) if the part prt contains a specification
       `Context-Type: typ'; otherwise NONE.

       [part_data prt] is the data contain in part prt; for instance, the
       contents of a file uploaded via form-based file upload.

       [part_field_strings prt fnm] is a (possibly empty) list of the
       strings bound to field fnm in part prt.

       [part_field_string prt fnm] returns SOME(s) where s is a string
       bound to field name fnm in part prt, if any; otherwise NONE.
       Equivalent to
            case part_field_strings prt fnm of
                 []     => NONE
               | s :: _ => SOME s

       [part_field_integer prt (fnm, deflt)] attempts to parse an integer
       from field fnm of part prt.  Returns i if part_field_string prt fnm
       = SOME(s) and an integer i can be parsed from a prefix of s;
       otherwise returns deflt.

       3. Administrative and server information
       ----------------------------------------

       Each of the following variables has the value SOME(s) if the
       corresponding CGI environment variable is bound to string s;
       otherwise NONE:

       [cgi_server_software] is the value of SERVER_SOFTWARE

       [cgi_server_name] is the value of SERVER_NAME

       [cgi_gateway_interface] is the value of GATEWAY_INTERFACE

       [cgi_server_protocol] is the value of SERVER_PROTOCOL

       [cgi_server_port] is the value of SERVER_PORT

       [cgi_request_method] is the value of REQUEST_METHOD

       [cgi_http_accept] is the value of HTTP_ACCEPT

       [cgi_http_user_agent] is the value of HTTP_USER_AGENT

       [cgi_http_referer] is the value of HTTP_REFERER

       [cgi_path_info] is the value of PATH_INFO

       [cgi_path_translated] is the value of PATH_TRANSLATED

       [cgi_script_name] is the value of SCRIPT_NAME

       [cgi_query_string] is the value of QUERY_STRING

       [cgi_remote_host] is the value of REMOTE_HOST

       [cgi_remote_addr] is the value of REMOTE_ADDR

       [cgi_remote_user] is the value of REMOTE_USER

       [cgi_remote_ident] is the value of REMOTE_IDENT

       [cgi_auth_type] is the value of AUTH_TYPE

       [cgi_content_type] is the value of CONTENT_TYPE

       [cgi_content_length] is the value of CONTENT_LENGTH, that is, the
       length of the data transmitted in the CGI call.

       [cgi_annotation_server] is the value of ANNOTATION_SERVER

       [cgi_http_cookie] is the value of HTTP_COOKIE

       [cgi_http_forwarded] is the value of HTTP_FORWARDED

       [cgi_http_host] is the value of HTTP_HOST

       [cgi_http_proxy_connection] is the value of HTTP_PROXY_CONNECTION

       [cgi_script_filename] is the value of SCRIPT_FILENAME

       [cgi_document_root] is the value of DOCUMENT_ROOT

       [cgi_server_admin] is the value of SERVER_ADMIN

       [cgi_api_version] is the value of API_VERSION

       [cgi_the_request] is the value of THE_REQUEST

       [cgi_request_uri] is the value of REQUEST_URI

       [cgi_request_filename] is the value of REQUEST_FILENAME

       [cgi_is_subreq] is the value of IS_SUBREQ
    *)

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--- | ---

Moscow ML 2.00