3 OCaml HTTP - do it yourself (fully OCaml) HTTP daemon
5 Copyright (C) <2002> Stefano Zacchiroli <zack@cs.unibo.it>
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 2 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program; if not, write to the Free Software
19 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
25 exception Invalid_status_line of string
26 exception Header_not_found of string
28 (* TODO sanity checks on set* methods' arguments (e.g. dates 822 compliant,
29 code values < 600, ...) *)
31 let default_code = 200 in
32 (* remove all bindings of 'name' from hashtbl 'tbl' *)
33 let rec hashtbl_remove_all tbl name =
34 if not (Hashtbl.mem tbl name) then
35 raise (Header_not_found name);
36 Hashtbl.remove tbl name;
37 if Hashtbl.mem tbl name then hashtbl_remove_all tbl name
39 (* "version code reason_phrase" *)
40 let status_line_re = Pcre.regexp "^(HTTP/\d\.\d) (\d{3}) (.*)$" in
42 val mutable version = Http_common.http_version
43 val mutable code = default_code val mutable reason: string option = None
44 val contentsBuf = Buffer.create 1024
45 val headers = Hashtbl.create 11
47 method version = version
48 method setVersion v = version <- v
51 method setCode c = code <- c
52 method status = status_of_code code
53 method setStatus (s: Http_types.status) = code <- code_of_status s
56 | None -> reason_phrase_of_code code
58 method setReason r = reason <- Some r
62 [string_of_version self#version; string_of_int self#code; self#reason]
63 method setStatusLine s =
65 let subs = Pcre.extract ~rex:status_line_re s in
66 self#setVersion (Http_common.version_of_string subs.(1));
67 self#setCode (int_of_string subs.(2));
68 self#setReason subs.(3)
70 raise (Invalid_status_line s)
72 method isInformational = is_informational code
73 method isSuccess = is_success code
74 method isRedirection = is_redirection code
75 method isClientError = is_client_error code
76 method isServerError = is_server_error code
77 method isError = is_error code
79 method contents = Buffer.contents contentsBuf
80 method setContents c =
81 Buffer.clear contentsBuf;
82 Buffer.add_string contentsBuf c
83 method contentsBuf = contentsBuf
84 method setContentsBuf b =
85 Buffer.clear contentsBuf;
86 Buffer.add_buffer contentsBuf b
87 method addContents s = Buffer.add_string contentsBuf s
88 method addContentsBuf b = Buffer.add_buffer contentsBuf b
90 (** adds an header named 'name' with value 'value', if an header with the
91 same name exists, the new value is considered an addition to the header as
92 specified in RFC 2616, thus getting value for this header will return a
93 comma separated list of values provided via 'addHeader' *)
94 method addHeader ~name ~value = Hashtbl.add headers name value
95 (** set the value of header 'name' to 'value', removing all previous
97 method replaceHeader ~name ~value = Hashtbl.replace headers name value
98 (** remove the header named 'name', please note that this remove all
99 values provided for this header *)
100 method removeHeader ~name = hashtbl_remove_all headers name
101 method hasHeader ~name = Hashtbl.mem headers name
102 (** @return value of header 'name', if multiple values were provided for
103 header 'name', the return value will be a comma separated list of
104 provided values as stated in RFC 2616 *)
105 method header ~name =
106 if not (self#hasHeader name) then
107 raise (Header_not_found name);
108 String.concat ", " (List.rev (Hashtbl.find_all headers name))
109 (** @return all headers as a list of pairs <name, value> *)
113 (fun name _ headers -> (name, self#header ~name)::headers)
117 method contentType = self#header "Content-Type"
118 method setContentType t = self#replaceHeader "Content-Type" t
119 method contentEncoding = self#header "Content-Encoding"
120 method setContentEncoding e = self#replaceHeader "Content-Encoding" e
121 method date = self#header "Date"
122 method setDate d = self#replaceHeader "Date" d
123 method expires = self#header "Expires"
124 method setExpires t = self#replaceHeader "Expires" t
125 method server = self#header "Server"
126 method setServer s = self#replaceHeader "Server" s
128 method serialize outchan =
129 output_string outchan self#statusLine;
131 send_headers self#headers outchan;
133 Buffer.output_buffer outchan contentsBuf;