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/
29 open Http_getter_types;;
32 let string_of_ls_flag = function No -> "NO" | Yes -> "YES" | Ann -> "ANN"
33 let string_of_encoding = function
34 | Enc_normal -> "Normal"
35 | Enc_gzipped -> "GZipped"
37 let is_cic_uri uri = Pcre.pmatch ~pat:"^cic:" uri
38 let is_theory_uri uri = Pcre.pmatch ~pat:"^theory:" uri
39 let is_xml_uri uri = is_cic_uri uri || is_theory_uri uri
40 let is_rdf_uri uri = Pcre.pmatch ~pat:"^helm:rdf(.*):(.*)//(.*)" uri
41 let is_xsl_uri uri = Pcre.pmatch ~pat:"^\\w+\\.xsl" uri
43 let rec http_getter_uri_of_string = function
44 | uri when is_rdf_uri uri ->
45 (match Pcre.split ~pat:"//" uri with
48 match http_getter_uri_of_string uri with
49 | Xml_uri xmluri -> xmluri
50 | _ -> raise (Http_getter_invalid_URI uri)
52 Rdf_uri (prefix, rest)
53 | _ -> raise (Http_getter_invalid_URI uri))
54 | uri when is_cic_uri uri -> Xml_uri (Cic (Pcre.replace ~pat:"^cic:" uri))
55 | uri when is_theory_uri uri ->
56 Xml_uri (Theory (Pcre.replace ~pat:"^theory:" uri))
57 | uri -> raise (Http_getter_invalid_URI uri)
61 ~pat:(sprintf "DOCTYPE (.*) SYSTEM\\s+\"%s/" Http_getter_env.dtd_base_url)
63 sprintf "DOCTYPE $1 SYSTEM \"%s/getdtd?uri=" Http_getter_env.my_own_url)
66 let mk_patch_fun tag line =
68 ~pat:(sprintf "%s\\s+href=\"" tag)
70 sprintf "%s href=\"%s/getxslt?uri=" tag Http_getter_env.my_own_url)
73 let (patch_import, patch_include) =
74 (mk_patch_fun "xsl:import", mk_patch_fun "xsl:include")
76 fun line -> patch_include (patch_import line)
79 ~pat:"ENTITY (.*) SYSTEM\\s+\""
81 sprintf "ENTITY $1 SYSTEM \"%s/getdtd?uri=" Http_getter_env.my_own_url)
85 sprintf "<html><body><h1>Http Getter error: %s</h1></body></html>" s
86 let pp_internal_error s =
87 sprintf "<html><body><h1>Http Getter Internal error: %s</h1></body></html>" s
88 let pp_msg s = sprintf "<html><body><h1>%s</h1></body></html>" s
91 let mk_return_fun pp_fun contype msg outchan =
93 ~body:(pp_fun msg) ~headers:["Content-Type", contype] outchan
95 let return_html_error = mk_return_fun pp_error "text/html"
96 let return_html_internal_error = mk_return_fun pp_internal_error "text/html"
97 let return_html_msg = mk_return_fun pp_msg "text/html"
98 let return_html_raw = mk_return_fun null_pp "text/html"
99 let return_xml_raw = mk_return_fun null_pp "text/xml"
100 let return_file ~fname ?contype ?contenc ?(patch_fun = fun x -> x) outchan =
102 match (contype, contenc) with
103 | (Some t, Some e) -> ["Content-Encoding", e; "Content-Type", t]
104 | (Some t, None) -> ["Content-Type" , t]
105 | (None, Some e) -> ["Content-Encoding", e]
108 Http_daemon.send_basic_headers ~code:200 outchan;
109 Http_daemon.send_headers headers outchan;
110 Http_daemon.send_CRLF outchan;
111 Http_getter_misc.iter_file
112 (fun line -> output_string outchan (patch_fun line ^ "\n"))
114 let return_400 body outchan = Http_daemon.respond_error ~code:400 ~body outchan