3 * Stefano Zacchiroli <zack@cs.unibo.it>
4 * for the HELM Team http://helm.cs.unibo.it/
6 * This file is part of HELM, an Hypertextual, Electronic
7 * Library of Mathematics, developed at the Computer Science
8 * Department, University of Bologna, Italy.
10 * HELM is free software; you can redistribute it and/or
11 * modify it under the terms of the GNU General Public License
12 * as published by the Free Software Foundation; either version 2
13 * of the License, or (at your option) any later version.
15 * HELM is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 * GNU General Public License for more details.
20 * You should have received a copy of the GNU General Public License
21 * along with HELM; if not, write to the Free Software
22 * Foundation, Inc., 59 Temple Place - Suite 330, Boston,
25 * For details, see the HELM World-Wide-Web page,
26 * http://helm.cs.unibo.it/
31 let body_sep_RE = Pcre.regexp "\r\n\r\n";;
32 let url_scheme_RE = Pcre.regexp ~flags:[`CASELESS] "http://";;
33 let url_RE = Pcre.regexp "^([\\w.]+)(:(\\d+))?(/.*)?$";;
36 let subs = Pcre.extract ~rex:url_RE (Pcre.replace ~rex:url_scheme_RE url) in
38 (if subs.(2) = "" then 80 else int_of_string subs.(3)),
39 (if subs.(4) = "" then "/" else subs.(4)))
42 (sprintf "Can't parse url: %s (exception: %s)"
43 url (Printexc.to_string exc))
46 match Pcre.split ~rex:body_sep_RE answer with
48 | _ -> failwith "Invalid response received: can't parse response's body"
51 let init_socket addr port =
52 let inet_addr = (Unix.gethostbyname addr).Unix.h_addr_list.(0) in
53 let sockaddr = Unix.ADDR_INET (inet_addr, port) in
54 let suck = Unix.socket Unix.PF_INET Unix.SOCK_STREAM 0 in
55 Unix.connect suck sockaddr;
56 let outchan = Unix.out_channel_of_descr suck in
57 let inchan = Unix.in_channel_of_descr suck in
60 let rec retrieve inchan buf =
61 Buffer.add_string buf (input_line inchan ^ "\n");
66 let (address, port, path) = parse_url url in
67 let (inchan, outchan) = init_socket address port in
68 output_string outchan (sprintf "GET %s HTTP/1.0\r\n\r\n" path);
70 let buf = Buffer.create 1023 in
73 with End_of_file -> get_body (Buffer.contents buf)
76 let http_post ?(body = "") url =
77 let (address, port, path) = parse_url url in
78 let (inchan, outchan) = init_socket address port in
79 output_string outchan (sprintf "POST %s HTTP/1.0\r\n" path);
80 output_string outchan (sprintf "Content-Length: %d\r\n" (String.length body));
81 output_string outchan "\r\n";
82 output_string outchan body;
84 let buf = Buffer.create 1023 in
87 with End_of_file -> get_body (Buffer.contents buf)
90 let rec hashtbl_remove_all tbl key =
91 if Hashtbl.mem tbl key then begin
92 Hashtbl.remove tbl key;
93 hashtbl_remove_all tbl key